Charging device and charging system

Abstract

Provided in the present disclosure are a charging device and a charging system. The charging device comprises: a body provided with an accommodating part; an energy storage apparatus detachably accommodated in the accommodating part; a power input part provided on the surface of the body and configured to connect to an external power supply, the power input part being electrically connected to the energy storage apparatus, and the power input part comprising a direct current input end and an alternating current input end; a power output part provided on the surface of the body and configured to connect to an external load, the power output part being electrically connected to both the power input part and the energy storage apparatus, the power output part comprising a first direct current output end and a first alternating current output end, the first direct current output end at least comprising a vehicle charging output end, and the vehicle charging output end being configured to connect to a multifunctional vehicle; and a main control unit configured to connect to the energy storage apparatus, the power input part and the power output part, and to control the external power supply to supply power to the energy storage apparatus and control the energy storage apparatus or the external power supply to change to supplying power to the power output part.

Description

Charging device and charging system TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of energy, and particularly relates to a charging device and a charging system. BACKGROUND

[0002] At present, new energy type multi-functional vehicles have gradually replaced traditional fuel type multi-functional vehicles. The multi-functional vehicles use power batteries such as lithium batteries as power sources to work.

[0003] Therefore, the multi-functional vehicles such as riding type lawn mowers need to be equipped with on-board chargers for charging, and the electric tools using battery packs need to have special battery pack chargers, the indoor power supply of the user needs to be equipped with a power adapter, and the outdoor power supply needs to be equipped with an outdoor energy storage mobile power supply device, that is, each of the above needs needs to be equipped with a separate supporting device, which leads to complicated operation and poor experience when the user performs the above multiple behaviors. And in order to meet the above various needs, various supporting devices need to be purchased, which increases the cost. For example, the user who has a riding type lawn mower and a charger needs to purchase a portable energy storage power supply additionally to solve the demand for outdoor power supply. SUMMARY

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present disclosure is to provide a charging device and a charging system to solve the problems in the related art.

[0005] In a first aspect, the present application provides a charging device, comprising:

[0006] a body forming a containing portion;

[0007] an energy storage device detachably accommodated in the containing portion;

[0008] a power input portion provided on the surface of the body and configured to access an external power supply, the power input portion being electrically connected to the energy storage device, the power input portion comprising a direct current input end and an alternating current input end;

[0009] a power output portion provided on the surface of the body and configured to connect an external load, the power output portion being electrically connected to the power input portion and the energy storage device, the power output portion comprising a first direct current output end and a first alternating current output end, the first direct current output end comprising at least a vehicle charger output end, the vehicle charger output end being configured to connect a multi-functional vehicle;

[0010] a main control unit configured to connect the energy storage device, the power input portion and the power output portion, configured to control the external power supply to supply power to the energy storage device, and configured to control the energy storage device or the external power supply to convert power to supply to the power output portion.

[0011] In some embodiments, the charging device comprises a power unit communicatively connected to the master control unit, configured to control the external power supply to charge the energy storage device and / or supply power to the external load connected to the first DC output based on the signal sent by the master control unit.

[0012] One end of the power unit is connected to the power input, and the other end is connected to the energy storage device and the first DC output.

[0013] In some embodiments, the power unit comprises a plurality of switch circuits, the control ends of the plurality of switch circuits being connected to the master control unit, configured to control the external power supply to supply power to the energy storage device and control the energy storage device or the external power supply to supply power to the power output by switching on and off the plurality of switch circuits under the control of the master control unit.

[0014] In some embodiments, the plurality of switch circuits are connected between the power input and the positive electrode of the energy storage device, and between the power input and the positive electrode of the first DC output.

[0015] In some embodiments, the plurality of switch circuits comprise a plurality of field effect transistors arranged in parallel, the gates of the field effect transistors being connected to the master control unit.

[0016] In some embodiments, the charging device comprises a vehicle charging communication unit, one end of the vehicle charging communication unit being communicatively connected to the master control unit, and the other end being communicatively connected to the vehicle charging output.

[0017] The vehicle charging communication unit is configured to detect the connection of the multi-functional vehicle, and send connection information to the master control unit when detecting the connection of the multi-functional vehicle.

[0018] The master control unit is configured to control the energy storage device to stop charging and discharging based on the connection information.

[0019] In some embodiments, the charging device comprises a current sampling circuit.

[0020] The current sampling circuit is connected between the negative electrode of the energy storage device and the negative electrode of the vehicle charging output, and is configured to collect the current value flowing through the energy storage device and / or the vehicle charging output.

[0021] The master control module further comprises a current sampling unit connected between the current sampling circuit and the master control unit, configured to send the collected current value to the master control unit.

[0022] In some embodiments, the charging device comprises a battery pack communication unit and a voltage sampling unit.

[0023] The battery pack communication unit and the voltage sampling unit are connected between the master control unit and the energy storage device, respectively. The battery pack communication unit is configured to establish a communication connection between the master control unit and the energy storage device. The voltage sampling unit is configured to send the collected voltage value to the master control unit.

[0024] In some embodiments, the charging device is provided with a hardware switch and a first switch unit. The hardware switch and the first switch unit are in communication connection. When the hardware switch is triggered in a first preset manner, the first switch unit is turned on.

[0025] The hardware switch and the master control unit are in communication connection. When the hardware switch is triggered in a second preset manner, the master control unit controls the first switch unit to be turned off.

[0026] In some embodiments, the power input part includes an auxiliary power supply.

[0027] One end of the first switch unit is connected to the energy storage device and the auxiliary power supply, and the other end is connected to the master control unit. When the first switch unit is turned on, the master control unit is powered, and when the master control unit is powered on, the master control unit sends a self-locking signal to the first switch unit.

[0028] In some embodiments, the charging device includes an anti-backflow unit, which includes a diode. The anode of the diode is connected to the negative electrode of the energy storage device, the negative electrode of the vehicle charging output end, and the auxiliary power supply. The cathode of the diode is connected to the first switch unit.

[0029] In some embodiments, the charging device includes a pre-charging unit. The input end of the pre-charging unit is connected to the energy storage device and the auxiliary power supply. The output end of the pre-charging unit is connected to the vehicle charging output end.

[0030] The pre-charging unit includes a pre-charging resistor and a pre-charging switch arranged in series. The control end of the pre-charging switch is connected to the master control unit.

[0031] In some embodiments, the charging device includes an isolation unit, a driving unit, and a power unit.

[0032] The power unit is configured to control the external power supply to charge the energy storage device based on the signal sent by the master control unit, and / or to supply power to the external load connected to the first DC output end. One end of the power unit is connected to the power input part, and the other end is connected to the energy storage device and the first DC output end, respectively.

[0033] The driving unit is configured to drive the power unit.

[0034] The isolation unit is configured as an optoelectronic isolation, an input end of the isolation unit is connected to the energy storage device and the auxiliary power supply, an output end of the isolation unit is provided with a light emitting device, a control end of the isolation unit is connected to the main control unit, an input end of the driving unit is provided with an optoelectronic conversion device corresponding to the light emitting device, and an output end of the driving unit is communicatively connected to the power unit.

[0035] In some embodiments, a first voltage reduction unit and a second voltage reduction unit are provided in series between the first switch unit and the main control unit.

[0036] The charging device further comprises:

[0037] A panel is integrated with the first DC output end and the first AC output end, and a panel control unit is provided in the panel, and the panel control unit is communicatively connected to the first DC output end and the first AC output end.

[0038] A second voltage reduction unit is configured to supply power to the panel control unit, a control end of the second voltage reduction unit is connected to the main control unit, an input end of the second voltage reduction unit is connected to the first voltage reduction unit, and an output end of the second voltage reduction unit is connected to the panel control unit.

[0039] In some embodiments, the charging device further comprises:

[0040] A fan unit is configured to control the operation of a fan to cool the energy storage device, the first voltage reduction unit is electrically connected to the fan unit, and the main control unit is communicatively connected to the fan unit.

[0041] In some embodiments, the charging device comprises:

[0042] A cover body is matched with the main body.

[0043] The charging device comprises an open cover monitoring unit communicatively connected to the main control unit, the open cover monitoring unit is configured to send a signal to the main control unit indicating whether the cover body is closed, and in the case that the cover body is detected to be opened, the main control unit reduces the charge and discharge current of the energy storage device.

[0044] In some embodiments, the charging device comprises:

[0045] A panel is provided with a display screen, the display screen is configured to display parameters related to any one of the power input unit, the power output unit or the energy storage device, a panel control unit is provided in the panel, and the panel control unit is communicatively connected to a display screen control unit of the display screen and the main control unit.

[0046] The display screen is configured to display an estimated discharging time of the energy storage device, and the display screen control unit is configured to acquire a remaining capacity of the energy storage device and a discharging current, calculate the estimated discharging time based on the remaining capacity and the discharging current, and control the display screen to display the estimated discharging time.

[0047] In some embodiments, the charging device comprises:

[0048] A panel is provided with a lamp strip configured to illuminate, and a panel control unit is arranged in the panel and in communication connection with a lamp strip control unit of the lamp strip.

[0049] In some embodiments, the charging device comprises an inverter communication unit in communication connection with the master control unit, the power input part comprises an electric energy conversion module electrically connected with the energy storage device and the power output part, the inverter communication unit is in communication connection with an electric energy conversion control unit of the electric energy conversion module, and the electric energy conversion module is configured to, under the control of the electric energy conversion control unit, convert a power supply voltage of an external power supply received by the direct current input end or the alternating current input end into a power supply voltage output by the energy storage device and the power output part.

[0050] In some embodiments, the electric energy conversion module comprises the direct current input end, a second direct current output interface, the alternating current input end, and a second alternating current output interface, the second direct current output interface is connected with the first direct current output end and the energy storage device, and the second alternating current output interface is connected with the first alternating current output end.

[0051] In some embodiments, the electric energy conversion module further comprises an alternating current-direct current conversion unit, a direct current-direct current conversion unit, and a bus, the alternating current input end is connected to the bus via the alternating current-direct current conversion unit, the direct current input end is connected to the bus via the direct current-direct current conversion unit, and the bus is connected with the second direct current output interface and the second alternating current output interface respectively.

[0052] In some embodiments, the alternating current input end is configured to input alternating current of 120V-240V, and the first alternating current output end is configured to output alternating current of 120V.

[0053] In some embodiments, the electric energy conversion module comprises a power failure monitoring unit configured to monitor whether a power failure occurs at the alternating current input end.

[0054] In a preset time period, when the power failure monitoring unit finds a power failure, the power failure monitoring unit sends power failure information to the master control unit, the master control unit controls the energy storage device to supply power to the power output part based on the power failure information, and the preset time period is not greater than 20ms.

[0055] In some embodiments, the charging device comprises a log unit communicatively connected to the master unit, configured to record a usage log of the charging device;

[0056] And / or, the charging device comprises a clock unit communicatively connected to the master unit, configured to obtain a current time;

[0057] And / or, the charging device comprises a remote control unit communicatively connected to the master unit, configured to be communicatively connected to an external electronic device.

[0058] The present application also provides a charging system, comprising a multifunctional vehicle, a connecting cable and a charging device;

[0059] The charging device comprises

[0060] A main body forming a receiving portion;

[0061] An energy storage device detachably received in the receiving portion;

[0062] A power input portion provided on a surface of the main body, configured to be connected to an external power source, the power input portion being electrically connected to the energy storage device, the power input portion comprising a direct current input end and an alternating current input end;

[0063] A power output portion provided on the surface of the main body, configured to be connected to an external load, the power output portion being electrically connected to the power input portion and the energy storage device, the power output portion comprising a first direct current output end and a first alternating current output end, the first direct current output end comprising at least a vehicle charging output end;

[0064] A master unit configured to be connected to the energy storage device, the power input portion and the power output portion, configured to control the external power source to supply power to the energy storage device, and to control the energy storage device or the external power source to supply power to the power output portion;

[0065] One end of the connecting cable is connected to the vehicle charging output end, and the other end is connected to a charging seat of the multifunctional vehicle.

[0066] As described above, the present disclosure provides a charging device and a charging system, which have the beneficial effects that the charging device can flexibly perform modes such as connecting an energy storage device for charging, using an external power source for power supply output of a required power, and using the energy storage device for discharging for power supply output, so as to be applicable to various forms such as an energy storage device charger, an electric multifunctional vehicle charger, a mobile device charger, a mobile power source, etc., thereby improving user experience and reducing cost.

[0067] At present, new energy type electric multi-functional vehicles have gradually replaced traditional fuel type electric multi-functional vehicles. The electric multi-functional vehicles use power batteries such as lithium batteries as power sources to work.

[0068] Therefore, the electric multi-functional vehicles such as riding type lawn mowers need to be equipped with on-vehicle chargers for charging, and the electric tools using the battery packs need to be equipped with special battery pack chargers, the indoor power supply of the users needs to be equipped with power adapters, and the outdoor power supply needs to be equipped with outdoor energy storage mobile power supply equipment. That is, each of the above needs needs to be equipped with a separate supporting device, which leads to complicated operation and poor experience of the users when performing the above multiple behaviors. In order to meet the above various needs, various supporting devices need to be purchased, which increases the cost. For example, the user who has a riding type lawn mower and a charger needs to purchase a portable energy storage power supply additionally in order to solve the demand for outdoor power supply. At the same time, when using the portable energy storage power supply, safety needs to be paid attention to, otherwise serious personal accidents will be caused.

[0069] In a second aspect, the present application provides a charging device, comprising:

[0070] a body forming a containing part having an opening;

[0071] a cover covering the opening of the containing part;

[0072] an energy storage device being detachably accommodated into the containing part from the opening;

[0073] a power input part being arranged on the surface of the body and configured to access an external power supply, the power input part being electrically connected with the energy storage device, the power input part comprising a direct current input end and an alternating current input end;

[0074] a power output part being arranged on the surface of the body and configured to connect an external load, the power output part being electrically connected with the power input part and the energy storage device, the power output part comprising a first direct current output end and a first alternating current output end, the first direct current output end comprising at least a vehicle charging output end configured to connect a multi-functional vehicle;

[0075] a main control unit configured to connect the energy storage device, the power input part and the power output part, configured to control the external power supply to supply power to the energy storage device, and configured to control the energy storage device or the external power supply to convert power supply to the power output part;

[0076] an opening cover monitoring unit being communicatively connected with the main control unit and configured to send a signal to the main control unit about whether the cover is opened or not, and in the case that the cover is opened, the main control unit reduces the charge and discharge current of the energy storage device;

[0077] A cover opening detection assembly is connected with the cover opening monitoring unit and is arranged on the surface of the accommodating portion provided with the opening and / or the cover body, and is configured to detect whether the cover body is opened.

[0078] In some embodiments, the cover body has a first side, the surface of the accommodating portion provided with the opening has a first edge, the first side is hinged to the first edge, and the cover opening detection assembly is arranged on the first edge and / or the first side.

[0079] In some embodiments, the cover opening detection assembly comprises a Hall sensor and a magnet, one of the Hall sensor and the magnet is arranged on the surface of the accommodating portion provided with the opening, and the other is arranged on the cover body.

[0080] The Hall sensor is connected with the cover opening monitoring unit, and in the case that the cover body is opened, the Hall sensor sends a first level to the master control unit via the cover opening monitoring unit, and in the case that the cover body is closed, the Hall sensor sends a second level to the master control unit via the cover opening monitoring unit.

[0081] In some embodiments, the cover opening monitoring unit comprises a filter circuit connected between the Hall sensor and the master control unit, and is configured to separate a signal related to the opening of the cover body.

[0082] In some embodiments, the Hall sensor is arranged on the surface of the accommodating portion provided with the opening, and the Hall sensor has a recessed hole.

[0083] The magnet is arranged on the cover body and protrudes from the cover body, and in the case that the cover body is closed, the magnet is matched with the recessed hole.

[0084] In some embodiments, the charging device comprises a power unit connected in communication with the master control unit.

[0085] The power unit is configured to control the external power supply to charge the energy storage device and / or supply power to an external load connected to the first DC output terminal based on the signal sent by the master control unit.

[0086] One end of the power unit is connected to the power input portion, and the other end is respectively connected to the energy storage device and the first DC output terminal.

[0087] In some embodiments, the power unit comprises a plurality of switch circuits, and control ends of the plurality of switch circuits are connected to the master control unit.

[0088] The master control unit controls the plurality of switch circuits to be turned on or off, so as to control the external power supply to supply power to the energy storage device, and control the energy storage device or the external power supply to convert to supply power to the power output portion.

[0089] In some embodiments, the plurality of switch circuits are connected between the power input and the positive pole of the energy storage device, and between the power input and the positive pole of the first DC output.

[0090] In some embodiments, the plurality of switch circuits comprise a plurality of field effect tubes arranged in parallel, the gates of the field effect tubes being connected to the master control unit.

[0091] In some embodiments, the charging device comprises a vehicle charging communication unit, one end of the vehicle charging communication unit being communicatively connected to the master control unit, and the other end being communicatively connected to the vehicle charging output;

[0092] The vehicle charging communication unit is configured to detect the connection of the multi-functional vehicle, and when detecting the connection of the multi-functional vehicle, the vehicle charging communication unit sends connection information to the master control unit, and the master control unit controls the energy storage device to stop charging and discharging based on the connection information.

[0093] In some embodiments, the charging device comprises a current sampling circuit connected between the negative pole of the energy storage device and the negative pole of the vehicle charging output.

[0094] The current sampling circuit is configured to collect the current value flowing through the energy storage device and / or the vehicle charging output.

[0095] The master control module further comprises a current sampling unit connected between the current sampling circuit and the master control unit.

[0096] The current sampling unit is configured to send the collected current value to the master control unit.

[0097] In some embodiments, the charging device comprises a battery pack communication unit and a voltage sampling unit.

[0098] The battery pack communication unit and the voltage sampling unit are respectively connected between the master control unit and the energy storage device, the battery pack communication unit is configured to establish a communication connection between the master control unit and the energy storage device, and the voltage sampling unit is configured to send the collected voltage value to the master control unit.

[0099] In some embodiments, the charging device is provided with a hardware switch and a first switch unit.

[0100] The hardware switch and the first switch unit are communicatively connected, and when the hardware switch is triggered in a first preset manner, the first switch unit is turned on.

[0101] The hardware switch is in communication connection with the master control unit, and when the hardware switch is triggered in a second preset mode, the master control unit controls the first switch unit to be turned off.

[0102] In some embodiments, the power input part comprises an auxiliary power supply;

[0103] One end of the first switch unit is connected to the energy storage device and the auxiliary power supply, and the other end is connected to the master control unit;

[0104] The auxiliary power supply is configured to supply power to the master control unit when the first switch unit is turned on, and the master control unit sends a self-locking signal to the first switch unit when the master control unit is powered on.

[0105] In some embodiments, the charging device comprises an anti-backflow unit;

[0106] The anti-backflow unit comprises a diode, an anode of the diode is connected to a negative electrode of the energy storage device, a negative electrode of the vehicle charging output end and the auxiliary power supply, and a cathode of the diode is connected to the first switch unit.

[0107] In some embodiments, the charging device comprises a pre-charging unit;

[0108] The input end of the pre-charging unit is connected to the energy storage device and the auxiliary power supply, and the output end of the pre-charging unit is connected to the vehicle charging output end;

[0109] The pre-charging unit comprises a pre-charging resistor and a pre-charging switch arranged in series, and a control end of the pre-charging switch is connected to the master control unit.

[0110] In some embodiments, the charging device comprises an isolation unit, a driving unit and a power unit;

[0111] The power unit is configured to control the external power supply to charge the energy storage device based on the signal sent by the master control unit, and / or supply power to the external load connected to the first DC output end;

[0112] One end of the power unit is connected to the power input part, and the other end is connected to the energy storage device and the first DC output end, respectively;

[0113] The driving unit is configured to drive the power unit;

[0114] The isolation unit is configured to be optoelectronic isolation;

[0115] The input end of the isolation unit is connected to the energy storage device and the auxiliary power supply, the output end of the isolation unit is provided with a light emitting device, the control end of the isolation unit is connected to the main control unit, the input end of the driving unit is provided with a photoelectric conversion device corresponding to the light emitting device, and the output end of the driving unit is communicatively connected to the power unit.

[0116] In some embodiments, a first voltage reduction unit and a second voltage reduction unit are connected in series between the first switch unit and the main control unit.

[0117] The charging device further comprises:

[0118] A panel is integrated with the first DC output end and the first AC output end.

[0119] A panel control unit is arranged in the panel, and the panel control unit is communicatively connected to the first DC output end and the first AC output end.

[0120] A second voltage reduction unit is configured to supply power to the panel control unit.

[0121] The control end of the second voltage reduction unit is connected to the main control unit, the input end of the second voltage reduction unit is connected to the first voltage reduction unit, and the output end of the second voltage reduction unit is connected to the panel control unit.

[0122] In some embodiments, the charging device further comprises:

[0123] A fan unit is configured to control the operation of a fan to cool the energy storage device.

[0124] The first voltage reduction unit is electrically connected to the fan unit, and the main control unit is communicatively connected to the fan unit.

[0125] In some embodiments, the charging device comprises:

[0126] A panel is provided with a display screen, and the display screen is configured to display parameters related to any one of the power input unit, the power output unit, or the energy storage device.

[0127] A panel control unit is arranged in the panel, and the panel control unit is communicatively connected to a display screen control unit of the display screen and the main control unit.

[0128] The display screen is configured to display at least an estimated discharge duration of the energy storage device, the display screen control unit is configured to obtain a remaining capacity and a discharge current of the energy storage device, calculate the estimated discharge duration based on the remaining capacity and the discharge current, and control the display screen to display the estimated discharge duration.

[0129] In some embodiments, the charging device comprises:

[0130] a panel, wherein a light strip is arranged on the panel, and the light strip is configured to illuminate;

[0131] a panel control unit arranged in the panel, and the panel control unit is communicatively connected with a light strip control unit of the light strip.

[0132] In some embodiments, the charging device comprises an inverter communication unit communicatively connected with the master control unit.

[0133] The power input part comprises an electric energy conversion module, which is electrically connected with the energy storage device and the power output part, and the inverter communication unit is communicatively connected with an electric energy conversion control unit of the electric energy conversion module.

[0134] The electric energy conversion module is configured to, under the control of the electric energy conversion control unit, convert the power supply voltage of the external power supply received by the DC input end or the AC input end into the power supply voltage output by the energy storage device and the power output part.

[0135] In some embodiments, the electric energy conversion module comprises the DC input end, a second DC output interface, the AC input end, and a second AC output interface, the second DC output interface is connected with the first DC output end and the energy storage device, and the second AC output interface is connected with the first AC output end.

[0136] In some embodiments, the electric energy conversion module further comprises an AC-DC conversion unit, a DC-DC conversion unit, and a bus, the AC input end is connected to the bus via the AC-DC conversion unit, the DC input end is connected to the bus via the DC-DC conversion unit, and the bus is connected with the second DC output interface and the second AC output interface respectively.

[0137] In some embodiments, the AC input end is configured to input 120V-240V AC power, and the first AC output end is configured to output 120V AC power.

[0138] In some embodiments, the electric energy conversion module comprises a power failure monitoring unit configured to monitor whether a power failure occurs in the AC input end.

[0139] When the power failure monitoring unit detects a power failure, the power failure monitoring unit sends a power failure information to the master control unit, and the master control unit is configured to, within a preset time period, respond to the power failure information to control the energy storage device to supply power to the power output part, and the preset time period is not greater than 20ms.

[0140] In some embodiments, the charging device comprises a log unit communicatively connected to the master control unit, configured to record a usage log of the charging device.

[0141] And / or, the charging device comprises a clock unit communicatively connected to the master control unit, configured to obtain a current time.

[0142] And / or, the charging device comprises a remote control unit communicatively connected to the master control unit, configured to be communicatively connected to an external electronic device.

[0143] The present application also provides a charging system, comprising a multifunctional vehicle, a connecting cable and a charging device.

[0144] The charging device comprises

[0145] A main body forming a receiving portion;

[0146] An energy storage device detachably received in the receiving portion;

[0147] A power input portion provided on a surface of the main body and configured to be connected to an external power source, the power input portion being electrically connected to the energy storage device, the power input portion comprising a direct current input end and an alternating current input end;

[0148] A power output portion provided on the surface of the main body and configured to be connected to an external load, the power output portion being electrically connected to the power input portion and the energy storage device, the power output portion comprising a first direct current output end and a first alternating current output end, the first direct current output end comprising at least a vehicle charging output end;

[0149] A master control unit configured to be connected to the energy storage device, the power input portion and the power output portion, configured to control the external power source to supply power to the energy storage device, and configured to control the energy storage device or the external power source to supply power to the power output portion;

[0150] An open cover monitoring unit communicatively connected to the master control unit, configured to send a signal to the master control unit indicating whether the cover is open, and in the case that the cover is open, the master control unit reduces the charge and discharge current of the energy storage device;

[0151] An open cover detection assembly connected to the open cover monitoring unit, the open cover detection assembly being located on a surface of the receiving portion provided with an opening and / or the cover, configured to detect whether the cover is open;

[0152] One end of the connecting cable is connected to the vehicle charging output end, and the other end is connected to a charging seat of the multifunctional vehicle.

[0153] As described above, the present disclosure provides a charging device and a charging system, which have the beneficial effects that the charging device can flexibly perform the mode of connecting the energy storage device for charging, the mode of supplying the required power output by using the external power supply, and the mode of supplying the output by using the energy storage device for discharging, etc., so as to be applicable to various forms such as the energy storage device charger, the electric multi-functional vehicle charger, the mobile device charger, the mobile power supply, etc., thereby improving the user experience and reducing the cost. At the same time, the charging device can also reduce the charging and discharging current of the energy storage device when the cover is opened, thereby reducing the possibility of accidents of the charging device.

[0154] At present, new energy type electric multi-functional vehicles have gradually replaced traditional fuel type electric multi-functional vehicles. The electric multi-functional vehicles use power batteries such as lithium batteries as power sources for work.

[0155] Therefore, the electric multi-functional vehicles, such as riding-type lawn mowers, need to be equipped with on-board chargers for charging, and the electric tools using battery packs need to have special battery pack chargers, and the user needs to be equipped with a power adapter for indoor power supply, and needs to be equipped with an outdoor energy storage mobile power supply device for outdoor power supply, that is, each of the above needs requires a separate matching device, resulting in cumbersome operation and poor experience for the user when performing the above multiple behaviors. And, in order to meet the above various needs, various matching devices need to be purchased, increasing the cost. For example, a user who owns a riding-type lawn mower and a charger needs to purchase a portable energy storage power supply separately to solve the problem of outdoor power supply.

[0156] Moreover, when the portable energy storage power supply supplies power to multiple loads, the charging safety problem needs to be considered to reduce the possibility of accidents.

[0157] In a third aspect, a charging device is provided, comprising:

[0158] a body forming a containing portion;

[0159] an energy storage device detachably accommodated in the containing portion;

[0160] a power input portion provided on the surface of the body and configured to access an external power supply, the power input portion being electrically connected to the energy storage device, the power input portion comprising a direct current input end and an alternating current input end;

[0161] a power output portion provided on the surface of the body and configured to connect an external load, the power output portion being electrically connected to the power input portion and the energy storage device, the power output portion comprising a first direct current output end and a first alternating current output end, the first direct current output end comprising at least a vehicle charging output end, the vehicle charging output end being configured to connect a multi-functional vehicle;

[0162] The master control unit is configured to connect the energy storage device, the power input unit and the power output unit, control the external power supply to supply power to the energy storage device, and control the energy storage device or the external power supply to supply power to the power output unit.

[0163] The car charger communication unit is connected between the car charger output end and the master control unit, configured to send connection information to the master control unit when the car charger output end is connected to the multi-functional vehicle, and the master control unit controls the energy storage device to stop charging and discharging based on the connection information.

[0164] In one embodiment, the car charger communication unit includes a first detection circuit configured to detect whether the car charger output end is connected to the multi-functional vehicle.

[0165] The first detection circuit includes a car charger access point and a car charger detection point, the car charger access point is a probe related to the multi-functional vehicle and having a preset voltage, and the car charger detection point is connected to the master control unit, and the master control unit determines whether the car charger output end is connected to the multi-functional vehicle according to the voltage of the car charger detection point.

[0166] In one embodiment, the first detection circuit includes a first charging detection power supply and three first, second and third car charger resistors connected in series, the first charging detection power supply is connected to the first car charger resistor, and the third car charger resistor is grounded.

[0167] The car charger access point is located between the first car charger resistor and the second car charger resistor, and the car charger detection point is located between the second car charger resistor and the third car charger resistor.

[0168] In one embodiment, the first detection circuit includes a first car charger diode, the anode of the first car charger diode is connected to the first charging detection power supply, and the cathode of the first car charger diode is connected to the first car charger resistor.

[0169] In one embodiment, the car charger communication unit includes a follower circuit connected between the car charger detection point and the control unit, and the follower circuit is configured to increase the load capacity of the first detection circuit.

[0170] The follower circuit includes an operational amplifier, the positive input end of the operational amplifier is connected to the output end of the operational amplifier, the negative output end of the operational amplifier is connected to the car charger detection point, and the output end of the operational amplifier is connected to the control unit.

[0171] In one embodiment, the follower circuit further includes a first communication protection circuit, and the output end of the operational amplifier is connected to the control unit through the first communication protection circuit.

[0172] The first communication protection circuit comprises a communication protection power supply, a communication protection capacitor, a first communication protection diode and a second communication protection diode arranged in series, the cathode of the first communication protection diode is connected to the communication protection capacitor, the anode of the first communication protection diode is connected to the cathode of the second communication protection diode, and the anode of the second communication protection diode is grounded.

[0173] The output end of the operational amplifier is connected to the control unit via the first communication protection diode and the second communication protection diode.

[0174] In an embodiment, the charging device comprises a power unit in communication connection with the master control unit.

[0175] The power unit is configured to control the external power supply to charge the energy storage device and / or supply power to an external load connected to the first DC output end based on the signal sent by the master control unit.

[0176] One end of the power unit is connected to the power input part, and the other end is connected to the energy storage device and the first DC output end, respectively.

[0177] In an embodiment, the power unit comprises a plurality of switch circuits, and the control ends of the plurality of switch circuits are connected to the master control unit.

[0178] The master control unit controls the plurality of switch circuits to control the external power supply to supply power to the energy storage device, and controls the energy storage device or the external power supply to supply power to the power output part.

[0179] In an embodiment, the plurality of switch circuits are connected between the power input part and the positive electrode of the energy storage device, and connected between the power input part and the positive electrode of the first DC output end.

[0180] In an embodiment, the plurality of switch circuits comprise a plurality of field effect tubes arranged in parallel, and the gates of the field effect tubes are connected to the master control unit.

[0181] In an embodiment, the charging device comprises a current sampling circuit connected between the negative electrode of the energy storage device and the negative electrode of the vehicle charging output end.

[0182] The current sampling circuit is configured to collect the current value flowing through the energy storage device and / or the vehicle charging output end.

[0183] The master control module further comprises a current sampling unit connected between the current sampling circuit and the master control unit.

[0184] The current sampling unit is configured to send the collected current value to the master control unit.

[0185] In one embodiment, the charging device comprises a battery pack communication unit and a voltage sampling unit, the battery pack communication unit and the voltage sampling unit are connected between the master control unit and the energy storage device, respectively.

[0186] The battery pack communication unit is configured to establish a communication connection between the master control unit and the energy storage device, and the voltage sampling unit is configured to send the collected voltage value to the master control unit.

[0187] In one embodiment, the charging device is provided with a hardware switch and a first switch unit, the hardware switch and the first switch unit are in communication connection, when the hardware switch is triggered in a first preset manner, the first switch unit is turned on.

[0188] The hardware switch and the master control unit are in communication connection, when the hardware switch is triggered in a second preset manner, the master control unit controls the first switch unit to be turned off.

[0189] In one embodiment, the power input part comprises an auxiliary power supply;

[0190] One end of the first switch unit is connected to the energy storage device and the auxiliary power supply, and the other end is connected to the master control unit.

[0191] The auxiliary power supply is configured to supply power to the master control unit when the first switch unit is turned on, and the master control unit sends a self-locking signal to the first switch unit when the master control unit is powered on.

[0192] In one embodiment, the charging device comprises an anti-backflow unit;

[0193] The anti-backflow unit comprises a diode, the anode of the diode is connected to the negative electrode of the energy storage device, the negative electrode of the vehicle charging output end and the auxiliary power supply, and the cathode of the diode is connected to the first switch unit.

[0194] In one embodiment, the charging device comprises a pre-charging unit, the input end of the pre-charging unit is connected to the energy storage device and the auxiliary power supply, and the output end of the pre-charging unit is connected to the vehicle charging output end.

[0195] The pre-charging unit comprises a pre-charging resistor and a pre-charging switch arranged in series, and the control end of the pre-charging switch is connected to the master control unit.

[0196] In one embodiment, the charging device comprises an isolation unit, a driving unit and a power unit;

[0197] The power unit is configured to control the external power supply to charge the energy storage device and / or supply power to the external load connected to the first DC output based on the signal sent by the master control unit;

[0198] One end of the power unit is connected to the power input, and the other end is connected to the energy storage device and the first DC output, respectively;

[0199] The driving unit is configured to drive the power unit;

[0200] The isolation unit is configured to be optoelectronic isolation;

[0201] The input end of the isolation unit is connected to the energy storage device and the auxiliary power supply, the output end of the isolation unit is provided with a light-emitting device, the control end of the isolation unit is connected to the master control unit, the input end of the driving unit is provided with a photoelectric conversion device corresponding to the light-emitting device, and the output end of the driving unit is communicatively connected to the power unit.

[0202] In one embodiment, a first voltage reduction unit and a second voltage reduction unit are connected in series between the first switch unit and the master control unit;

[0203] The charging device further comprises:

[0204] A panel integrated with the first DC output and the first AC output;

[0205] A panel control unit is provided in the panel, and the panel control unit is communicatively connected to the first DC output and the first AC output;

[0206] A second voltage reduction unit configured to supply power to the panel control unit;

[0207] The control end of the second voltage reduction unit is connected to the master control unit, the input end of the second voltage reduction unit is connected to the first voltage reduction unit, and the output end of the second voltage reduction unit is connected to the panel control unit.

[0208] In one embodiment, the charging device further comprises:

[0209] A fan unit configured to control the operation of a fan to cool the energy storage device;

[0210] The first voltage reduction unit and the fan unit are electrically connected, and the master control unit and the fan unit are communicatively connected.

[0211] In one embodiment, the charging device comprises:

[0212] A cover body matched with the body;

[0213] The charging device comprises an opening cover monitoring unit in communication connection with the master control unit, the opening cover monitoring unit is configured to send a signal to the master control unit whether the cover is closed, and in the case of detecting that the cover is opened, the master control unit reduces the charge-discharge current of the energy storage device.

[0214] In one embodiment, the charging device comprises:

[0215] A panel is provided with a display screen, and the display screen is configured to display parameters related to any one of the power input unit, the power output unit or the energy storage device.

[0216] A panel control unit is arranged in the panel, and the panel control unit is in communication connection with a display screen control unit of the display screen and the master control unit.

[0217] The display screen is configured to display at least an estimated discharge duration of the energy storage device, and the display screen control unit is configured to obtain a remaining capacity and a discharge current of the energy storage device, calculate the estimated discharge duration based on the remaining capacity and the discharge current, and control the display screen to display the estimated discharge duration.

[0218] In one embodiment, the charging device comprises:

[0219] A panel is provided with a light strip, and the light strip is configured to illuminate, and a panel control unit is arranged in the panel, and the panel control unit is in communication connection with a light strip control unit of the light strip.

[0220] In one embodiment, the charging device comprises an inverter communication unit in communication connection with the master control unit, and the power input unit comprises an electric energy conversion module in electrical connection with the energy storage device and the power output unit, and the inverter communication unit is in communication connection with an electric energy conversion control unit of the electric energy conversion module.

[0221] The electric energy conversion module is configured to convert, under the control of the electric energy conversion control unit, the power supply voltage of the external power supply received by the direct current input end or the alternating current input end into the power supply voltage output by the energy storage device and the power output unit.

[0222] In one embodiment, the electric energy conversion module comprises the direct current input end, a second direct current output interface, the alternating current input end and a second alternating current output interface, the second direct current output interface connects the first direct current output end and the energy storage device, and the second alternating current output interface connects the first alternating current output end.

[0223] In an embodiment, the power conversion module further comprises an AC-DC conversion unit, a DC-DC conversion unit, and a bus, the AC input is connected to the bus via the AC-DC conversion unit, the DC input is connected to the bus via the DC-DC conversion unit, and the bus is connected to the second DC output interface and the second AC output interface respectively.

[0224] In an embodiment, the AC input is configured to input AC power of 120V-240V, and the first AC output is configured to output AC power of 120V.

[0225] In an embodiment, the power conversion module comprises a power-off monitoring unit configured to monitor whether a power-off situation occurs at the AC input;

[0226] When the power-off monitoring unit finds a power-off situation, the power-off information is sent to the master control unit, and the master control unit is configured to control the energy storage device to supply power to the power output part within a preset time period in response to the power-off information, and the preset time period is not greater than 20ms.

[0227] In an embodiment, the charging device comprises a log unit in communication connection with the master control unit and configured to record the use log of the charging device;

[0228] And / or, the charging device comprises a clock unit in communication connection with the master control unit and configured to obtain the current time;

[0229] And / or, the charging device comprises a remote control unit in communication connection with the master control unit and configured to be in communication connection with an external electronic device.

[0230] The application also provides a charging system, which comprises a multifunctional vehicle, a connecting cable, and a charging device;

[0231] The charging device comprises:

[0232] a body forming a containing part;

[0233] an energy storage device detachably accommodated in the containing part;

[0234] a power input part arranged on the surface of the body and configured to access an external power supply, the power input part being electrically connected to the energy storage device, and the power input part comprising a DC input and an AC input;

[0235] The power output part is arranged on the surface of the body and configured to be connected with an external load. The power output part is electrically connected with the power input part and the energy storage device. The power output part includes a first DC output end and a first AC output end. The first DC output end includes at least a vehicle charger output end configured to be connected with a multi-functional vehicle.

[0236] The master control unit is configured to be connected with the energy storage device, the power input part and the power output part. The master control unit is configured to control the external power supply to supply power to the energy storage device and control the energy storage device or the external power supply to supply power to the power output part.

[0237] The vehicle charger communication unit is connected between the vehicle charger output end and the master control unit. When the vehicle charger output end is connected with the multi-functional vehicle, the vehicle charger communication unit sends connection information to the master control unit. Based on the connection information, the master control unit controls the energy storage device to stop charging and discharging.

[0238] One end of the connection cable is connected with the vehicle charger output end, and the other end is connected with a charging seat of the multi-functional vehicle.

[0239] As described above, the charging device and the charging system have the advantages that the charging device can flexibly perform charging connection with the energy storage device, supply power output with the required power by using the external power supply, and supply power output by discharging the energy storage device, etc. Therefore, the charging device can be used in various forms such as an energy storage device charger, an electric multi-functional vehicle charger, a mobile device charger, a mobile power supply, etc., to improve user experience and reduce cost. At the same time, the charging priority of the multi-functional vehicle is set to be high, so as to ensure the charging safety of the multi-functional vehicle.

[0240] At present, new energy type electric multi-functional vehicles have gradually replaced traditional fuel type electric multi-functional vehicles. The electric multi-functional vehicles use power batteries such as lithium batteries as power sources to work.

[0241] Therefore, the electric multi-functional vehicles, such as riding type lawn mowers, need to be equipped with vehicle chargers for charging, and the electric tools using battery packs need to have special battery pack chargers. The user needs to be equipped with a power adapter for indoor power supply, and needs to be equipped with an outdoor energy storage mobile power supply device for outdoor power supply. That is, each of the above needs requires a separate matching device, which leads to complicated operation and poor experience when the user performs the above multiple behaviors. In order to meet the above various needs, various matching devices need to be purchased, which increases the cost. For example, a user who has a riding type lawn mower and a charger needs to purchase a portable energy storage power supply additionally to solve the demand for outdoor power supply.

[0242] Meanwhile, the portable energy storage power supply also needs to cope with various emergency situations. At present, the existing portable energy storage power supply is difficult to solve these problems.

[0243] In a fourth aspect, a charging device is provided, comprising:

[0244] a body forming a receiving portion;

[0245] an energy storage device removably accommodated in the receiving portion;

[0246] a power input portion provided on the surface of the body and configured to access an external power supply, the power input portion being electrically connected to the energy storage device, the power input portion including a direct current input end and an alternating current input end, the alternating current input end being provided with a power failure monitoring unit configured to monitor whether a power failure occurs at the alternating current input end;

[0247] a power output portion provided on the surface of the body and configured to connect an external load, the power output portion being electrically connected to the power input portion and the energy storage device, the power output portion including a first direct current output end and a first alternating current output end, the first direct current output end including at least a vehicle charging output end configured to connect a multi-functional vehicle;

[0248] a main control unit configured to connect the energy storage device, the power input portion and the power output portion, and configured to control the external power supply to supply power to the energy storage device, and to control the energy storage device or the external power supply to convert power to supply to the power output portion;

[0249] When the power failure monitoring unit detects a power failure, it sends a power failure message to the main control unit, and the main control unit is configured to control the energy storage device to supply power to the power output portion within a preset time period in response to the power failure message, the preset time period being not greater than 20 ms.

[0250] In one embodiment, the preset time period is the time period of one cycle of alternating current input from the alternating current input end.

[0251] In one embodiment, the preset time period is the time period of half a cycle of alternating current input from the alternating current input end.

[0252] In one embodiment, the power failure monitoring unit includes a rectifier circuit and a monitoring circuit, the rectifier circuit being configured to convert the alternating current into direct current, and the monitoring circuit being configured to monitor the voltage value of the direct current.

[0253] In the case where the monitoring circuit detects that the voltage value of the direct current is zero, it is determined that a power failure has occurred.

[0254] In one embodiment, the charging device includes a power unit in communication connection with the main control unit;

[0255] The power unit is configured to control the external power supply to charge the energy storage device and / or supply power to the external load connected to the first DC output based on the signal sent by the master control unit, one end of the power unit is connected to the power input, and the other end is connected to the energy storage device and the first DC output, respectively.

[0256] In one embodiment, the power unit includes a plurality of switch circuits, and control ends of the plurality of switch circuits are connected to the master control unit.

[0257] The master control unit controls the external power supply to supply power to the energy storage device and controls the energy storage device or the external power supply to convert power to the power output by switching the plurality of switch circuits.

[0258] In one embodiment, the plurality of switch circuits are connected between the power input and the positive electrode of the energy storage device, and between the power input and the positive electrode of the first DC output.

[0259] In one embodiment, the plurality of switch circuits include a plurality of field effect tubes arranged in parallel, and the gates of the field effect tubes are connected to the master control unit.

[0260] In one embodiment, the charging device includes a vehicle charging communication unit, one end of the vehicle charging communication unit is in communication connection with the master control unit, and the other end is in communication connection with the vehicle charging output.

[0261] The vehicle charging communication unit is configured to detect the connection of the multi-functional vehicle, and when detecting the connection of the multi-functional vehicle, the vehicle charging communication unit sends connection information to the master control unit, and the master control unit controls the energy storage device to stop charging and discharging based on the connection information.

[0262] In one embodiment, the charging device includes a current sampling circuit connected between the negative electrode of the energy storage device and the negative electrode of the vehicle charging output.

[0263] The current sampling circuit is configured to collect the current value flowing through the energy storage device and / or the vehicle charging output.

[0264] The master control module further includes a current sampling unit connected between the current sampling circuit and the master control unit.

[0265] The current sampling unit is configured to send the collected current value to the master control unit.

[0266] In one embodiment, the charging device comprises a battery pack communication unit and a voltage sampling unit, the battery pack communication unit and the voltage sampling unit are connected between the master control unit and the energy storage device, respectively;

[0267] The battery pack communication unit is configured to establish a communication connection between the master control unit and the energy storage device, and the voltage sampling unit is configured to send the collected voltage value to the master control unit.

[0268] In one embodiment, the charging device is provided with a hardware switch and a first switch unit, the hardware switch and the first switch unit are in communication connection, when the hardware switch is triggered in a first preset manner, the first switch unit is turned on;

[0269] The hardware switch and the master control unit are in communication connection, when the hardware switch is triggered in a second preset manner, the master control unit controls the first switch unit to be turned off.

[0270] In one embodiment, the power input part comprises an auxiliary power supply;

[0271] One end of the first switch unit is connected to the energy storage device and the auxiliary power supply, and the other end is connected to the master control unit;

[0272] The auxiliary power supply is configured to supply power to the master control unit when the first switch unit is turned on, and the master control unit sends a self-locking signal to the first switch unit when the master control unit is powered on.

[0273] In one embodiment, the charging device comprises an anti-backflow unit;

[0274] The anti-backflow unit comprises a diode, the anode of the diode is connected to the negative electrode of the energy storage device, the negative electrode of the vehicle charging output end and the auxiliary power supply, and the cathode of the diode is connected to the first switch unit.

[0275] In one embodiment, the charging device comprises a pre-charging unit, the input end of the pre-charging unit is connected to the energy storage device and the auxiliary power supply, and the output end of the pre-charging unit is connected to the vehicle charging output end;

[0276] The pre-charging unit comprises a pre-charging resistor and a pre-charging switch arranged in series, and the control end of the pre-charging switch is connected to the master control unit.

[0277] In one embodiment, the charging device comprises an isolation unit, a driving unit and a power unit;

[0278] The power unit is configured to control the external power supply to charge the energy storage device and / or supply power to an external load connected to the first DC output based on the signal sent by the master control unit.

[0279] One end of the power unit is connected to the power input, and the other end is connected to the energy storage device and the first DC output, respectively.

[0280] The drive unit is configured to drive the power unit.

[0281] The isolation unit is configured to be optoelectronic isolation.

[0282] The input end of the isolation unit is connected to the energy storage device and the auxiliary power supply, the output end of the isolation unit is provided with a light-emitting device, the control end of the isolation unit is connected to the master control unit, the input end of the drive unit is provided with an optoelectronic conversion device corresponding to the light-emitting device, and the output end of the drive unit is communicatively connected to the power unit.

[0283] In one embodiment, a first voltage reduction unit and a second voltage reduction unit are connected in series between the first switch unit and the master control unit.

[0284] The charging device further comprises:

[0285] A panel integrated with the first DC output and the first AC output.

[0286] A panel control unit is provided in the panel, and the panel control unit is communicatively connected to the first DC output and the first AC output.

[0287] A second voltage reduction unit configured to supply power to the panel control unit.

[0288] The control end of the second voltage reduction unit is connected to the master control unit, the input end of the second voltage reduction unit is connected to the first voltage reduction unit, and the output end of the second voltage reduction unit is connected to the panel control unit.

[0289] In one embodiment, the charging device further comprises:

[0290] A fan unit configured to control the operation of a fan to cool the energy storage device, the first voltage reduction unit is electrically connected to the fan unit, and the master control unit is communicatively connected to the fan unit.

[0291] In one embodiment, the charging device comprises:

[0292] A cover body matched with the body.

[0293] The charging device comprises an opening cover monitoring unit in communication connection with the master control unit, the opening cover monitoring unit is configured to send a signal to the master control unit whether the cover is closed, and in the case of detecting that the cover is opened, the master control unit reduces the charge-discharge current of the energy storage device.

[0294] In one embodiment, the charging device comprises:

[0295] A panel is provided with a display screen, and the display screen is configured to display parameters related to any one of the power input unit, the power output unit or the energy storage device.

[0296] A panel control unit is arranged in the panel, and the panel control unit is in communication connection with a display screen control unit of the display screen and the master control unit.

[0297] The display screen is configured to display at least an estimated discharge duration of the energy storage device, the display screen control unit is configured to obtain a remaining capacity and a discharge current of the energy storage device, calculate the estimated discharge duration based on the remaining capacity and the discharge current, and control the display screen to display the estimated discharge duration.

[0298] In one embodiment, the charging device comprises:

[0299] A panel is provided with a light strip, and the light strip is configured to illuminate, and a panel control unit is arranged in the panel, and the panel control unit is in communication connection with a light strip control unit of the light strip.

[0300] In one embodiment, the charging device comprises an inverter communication unit in communication connection with the master control unit, the power input unit comprises an electric energy conversion module in electrical connection with the energy storage device and the power output unit, and the inverter communication unit is in communication connection with an electric energy conversion control unit of the electric energy conversion module.

[0301] The electric energy conversion module is configured to convert, under the control of the electric energy conversion control unit, the power supply voltage of the external power supply received by the direct current input end or the alternating current input end into the power supply voltage output by the energy storage device and the power output unit.

[0302] In one embodiment, the electric energy conversion module comprises the direct current input end, a second direct current output interface, the alternating current input end and a second alternating current output interface, the second direct current output interface connects the first direct current output end and the energy storage device, and the second alternating current output interface connects the first alternating current output end.

[0303] In one embodiment, the power conversion module further comprises an AC-DC conversion unit, a DC-DC conversion unit, and a bus, the AC input is connected to the bus via the AC-DC conversion unit, the DC input is connected to the bus via the DC-DC conversion unit, and the bus is connected to the second DC output interface and the second AC output interface respectively.

[0304] In one embodiment, the AC input is configured to input 120V-240V AC power, and the first AC output is configured to output 120V AC power.

[0305] In one embodiment, the charging device comprises a log unit in communication with the master control unit and configured to record a use log of the charging device.

[0306] In one embodiment, the charging device comprises a clock unit in communication with the master control unit and configured to obtain a current time.

[0307] In one embodiment, the charging device comprises a remote control unit in communication with the master control unit and configured to be in communication with an external electronic device.

[0308] The present application also provides a charging system, which comprises a multi-functional vehicle, a connecting cable, and a charging device.

[0309] The charging device comprises

[0310] a body forming a receiving portion;

[0311] a power storage device detachably received in the receiving portion;

[0312] a power input portion provided on a surface of the body and configured to be connected to an external power source, the power input portion being electrically connected to the power storage device, the power input portion comprising a DC input and an AC input, the AC input being provided with a power failure monitoring unit configured to monitor whether a power failure occurs in the AC input;

[0313] a power output portion provided on the surface of the body and configured to be connected to an external load, the power output portion being electrically connected to the power input portion and the power storage device, the power output portion comprising a first DC output and a first AC output, the first DC output comprising at least a vehicle charging output configured to be connected to the multi-functional vehicle;

[0314] a master control unit configured to be connected to the power storage device, the power input portion, and the power output portion, and configured to control the external power source to supply power to the power storage device, and to control the power storage device or the external power source to supply power to the power output portion;

[0315] The power-off monitoring unit sends power-off information to the master control unit when a power-off condition is found, and the master control unit is configured to control the energy storage device to supply power to the power output part in response to the power-off information within a preset time period, and the preset time period is not greater than 20 ms.

[0316] One end of the connecting cable is matched with the vehicle charging output end, and the other end is matched with the charging seat of the multifunctional vehicle.

[0317] As described above, the present disclosure provides a charging device and a charging system, which have the beneficial effects that the charging device can flexibly perform connection of the energy storage device for charging, can use an external power supply to output the required power, and can also use the energy storage device to discharge for power supply output and the like, so as to be applicable to various forms such as an energy storage device charger, an electric multifunctional vehicle charger, a mobile device charger, a mobile power supply and the like, thereby improving user experience and reducing cost. At the same time, the charging device can quickly use the energy storage device to output when the mains power is off, thereby reducing the loss caused by the mains power outage to life.

[0318] At present, new energy type electric multifunctional vehicles have gradually replaced traditional fuel type electric multifunctional vehicles. The electric multifunctional vehicle uses a power battery such as a lithium battery as a power supply to work.

[0319] Therefore, the electric multifunctional vehicle, such as a riding type mower, needs to be equipped with a vehicle-mounted charger for charging, and the electric tool using the battery pack needs to have a special battery pack charger, and the user needs to be equipped with a power adapter for indoor power supply, and needs to be equipped with an outdoor energy storage mobile power supply device for outdoor power supply, that is, each of the above needs needs a separate matching device, resulting in cumbersome operation and poor experience when the user performs the above multiple behaviors. And, in order to meet the above various needs, various matching devices need to be purchased, increasing the cost. For example, a user who owns a riding type mower and a charger needs to purchase a portable energy storage power supply separately to solve the outdoor power supply requirement.

[0320] At the same time, when charging the multifunctional vehicle, it is also necessary to detect whether the multifunctional vehicle, the connecting cable and the charging device are completed, otherwise it will cause charging failure.

[0321] In a fifth aspect, a charging system is provided, characterized in that it comprises a multifunctional vehicle, a connecting cable and a charging device, wherein the connecting cable is configured to connect the multifunctional vehicle and the charging device;

[0322] The connecting cable is provided with a detection line, a first end of the detection line is connected to the multifunctional vehicle, and a second end of the detection line is connected to a first detection circuit of the charging device.

[0323] The first detection circuit of the charging device is configured to detect whether the multifunctional vehicle, the connecting cable and the charging device are connected completely, and the first detection circuit comprises a vehicle charging access point and a vehicle charging detection point, the vehicle charging access point is configured to access the second end of the detection line;

[0324] The charging device is provided with a master control unit connected to the vehicle charging detection point, configured to obtain the voltage of the vehicle charging detection point, and determine that the multifunctional vehicle, the connecting cable and the charging device are connected completely when the voltage of the vehicle charging detection point is a target voltage value.

[0325] In one embodiment, the first detection circuit of the charging device comprises a first charging detection power supply and three first, second and third vehicle charging resistors connected in series, the first charging detection power supply is connected to the first vehicle charging resistor, and the third vehicle charging resistor is grounded.

[0326] The vehicle charging access point is located between the first and second vehicle charging resistors, and the vehicle charging detection point is located between the second and third vehicle charging resistors.

[0327] In one embodiment, the first detection circuit comprises a first vehicle charging diode, the anode of the first vehicle charging diode is connected to the first charging detection power supply, and the cathode of the first vehicle charging diode is connected to the first vehicle charging resistor.

[0328] In one embodiment, the multifunctional vehicle comprises a second detection circuit comprising a second charging detection power supply, which provides a voltage to the vehicle charging access point via the first end of the detection line and the second end of the detection line when the multifunctional vehicle, the detection line and the charging device are connected completely.

[0329] The master control unit is configured to determine whether the multifunctional vehicle, the connecting cable and the charging device are connected completely and whether the multifunctional vehicle is powered on based on the voltage obtained by the vehicle charging detection point.

[0330] In one embodiment, the master control unit is configured to:

[0331] obtain a first voltage value at the vehicle charging detection point to determine that the multifunctional vehicle, the connecting cable and the charging device are connected completely and the multifunctional vehicle is powered on;

[0332] obtain a second voltage value at the vehicle charging detection point to determine that the multifunctional vehicle, the connecting cable and the charging device are connected completely and the multifunctional vehicle is powered off, and the target voltage value comprises the first voltage value and the second voltage value.

[0333] A third voltage value is obtained at the vehicle charging detection point to determine that the multifunctional vehicle, the connecting cable and the charging device are not connected completely.

[0334] In one embodiment, the master control unit is configured to charge the multifunctional vehicle when the first voltage is obtained at the vehicle charging detection point.

[0335] In one embodiment, the voltage of the first charging detection power supply is greater than the voltage of the second charging detection power supply.

[0336] In one embodiment, the multifunctional vehicle comprises a second detection circuit, the second detection circuit comprising a second charging detection power supply, a second vehicle charging diode, a fourth vehicle charging resistor, a first cable access point and a second cable access point, the second charging detection power supply being grounded via the second vehicle charging diode and the fourth vehicle charging resistor, the first cable access point being connected between the second vehicle charging diode and the fourth vehicle charging resistor, the first cable access point and the second cable access point being open circuit;

[0337] The first end of the detection line comprises a first connection end and a second connection end which are short-circuited, when the detection line is connected to the multifunctional vehicle, the first connection end is connected to the first cable access point and the second connection end is connected to the second cable access point;

[0338] The second cable access point is connected to a battery management system of the multifunctional vehicle, and when the battery management system detects that the level of the second cable access point changes from low to high, it is determined that the detection line is connected to the multifunctional vehicle completely.

[0339] In one embodiment, the second detection circuit comprises a voltage dividing circuit connected between the second cable access point and the second connection end, configured to protect the battery management system.

[0340] In one embodiment, the detection line comprises a switch connected between the first connection end and the second connection end, when the switch is turned on, the first connection end and the second connection end are short-circuited.

[0341] In one embodiment, the detection circuit of the charging device comprises a third charging detection power supply, a third cable access point and a fourth cable access point, the third cable access point is connected to the third charging detection power supply and the master control unit respectively, the fourth cable access point is grounded, and the third cable access point and the fourth cable access point are open circuit.

[0342] The second end of the detection line comprises a third connection end and a fourth connection end which are short-circuited, the third connection end is matched with the third cable access point, and the fourth connection end is matched with the fourth cable access point.

[0343] The master control unit is configured to acquire the voltage of the third cable access point, and determine that the charging device is connected with the connection cable completely in case that the voltage of the third cable access point is zero.

[0344] In one embodiment, the detection circuit of the charging device comprises a fifth charging resistor connected between the third charging detection power supply and the third cable access point.

[0345] In one embodiment, the detection line comprises a communication line configured to transmit RS485 protocol information.

[0346] The detection line comprises a charging line, and the charging device charges the multifunctional vehicle via the charging line.

[0347] In one embodiment, the charging device comprises:

[0348] a body forming a containing part;

[0349] a storage device detachably accommodated in the containing part;

[0350] a power input part arranged on the surface of the body and configured to access an external power supply, the power input part being electrically connected with the storage device, and the power input part comprising a direct current input end and an alternating current input end;

[0351] a power output part arranged on the surface of the body and configured to connect an external load, the power output part being electrically connected with the power input part and the storage device, and the power output part comprising a first direct current output end and a first alternating current output end, the first direct current output end comprising at least a vehicle charging output end, and the vehicle charging output end having the first detection circuit;

[0352] a master control unit configured to connect the storage device, the power input part and the power output part, control the external power supply to supply power to the storage device, and control the storage device or the external power supply to supply power to the power output part.

[0353] Another aspect of the present application provides a charging system, comprising a garden work vehicle, a connection cable and a charging device, the connection cable being configured to connect the garden work vehicle and the charging device.

[0354] The connection cable is provided with a detection line, a first end of the detection line being connected with the garden work vehicle, and a second end of the detection line being connected with a first detection circuit of the charging device.

[0355] The first detection circuit of the charging device is configured to detect whether the garden working vehicle, the connecting cable and the charging device are connected.

[0356] The charging device is provided with a master control unit connected to the vehicle-charging detection point, configured to acquire the voltage of the vehicle-charging detection point, and determine that the garden working vehicle, the connecting cable and the charging device are connected when the voltage of the vehicle-charging detection point is a target voltage value.

[0357] Another aspect of the present application provides a charging system, comprising: a riding mower, a connecting cable and a charging device, the connecting cable being configured to connect the riding mower and the charging device;

[0358] The connecting cable is provided with a detection line, a first end of the detection line being connected to the riding mower, and a second end of the detection line being connected to a first detection circuit of the charging device.

[0359] The first detection circuit of the charging device is configured to detect whether the riding mower, the connecting cable and the charging device are connected.

[0360] The charging device is provided with a master control unit connected to the vehicle-charging detection point, configured to acquire the voltage of the vehicle-charging detection point, and determine that the garden working vehicle, the connecting cable and the charging device are connected when the voltage of the vehicle-charging detection point is a target voltage value.

[0361] As described above, the present application provides a charging system, which has the beneficial effect that the charging device can know whether the multifunctional vehicle is connected by detecting the voltage value of the vehicle-charging detection point, so as to quickly charge the multifunctional vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0362] FIG. 1 shows an electrical connection structure schematic diagram of a charging device in an embodiment of the present application.

[0363] FIG. 2 shows a three-dimensional structure schematic diagram of a charging device in an embodiment of the present application.

[0364] FIG. 3 shows a structure schematic diagram of a charging device provided with two first power battery packs in an embodiment of the present application.

[0365] FIG. 4 shows a structure schematic diagram of a charging device provided with one second power battery pack 200b in an embodiment of the present application.

[0366] Figure 5 shows a schematic diagram of the circuit structure of the energy storage device according to an embodiment of the present disclosure.

[0367] Figure 6 shows a schematic diagram of the front view of the first side of the charging device according to an embodiment of the present disclosure.

[0368] Figure 7A shows a schematic diagram of the front view of the first side of the charging device according to an embodiment of the present disclosure, in which each control switch controls the power on / off of one output interface region.

[0369] Figure 7B shows a schematic diagram of the front view of the first side of the charging device according to an embodiment of the present disclosure, in which each control switch controls the power on / off of one output interface region.

[0370] Figure 8 shows a schematic diagram of the structure of the second side of the charging device according to an embodiment of the present disclosure.

[0371] Figure 9 shows a schematic diagram of the structure of the charging device according to an embodiment of the present disclosure, in which the protective cover of the vehicle charging output is opened.

[0372] Figure 10 shows a schematic diagram of the application of the charging device as a vehicle charger of a multi-functional vehicle according to an embodiment of the present disclosure.

[0373] Figure 11 shows a schematic diagram of the application of the charging device to charge the multi-functional vehicle and the energy storage device according to an embodiment of the present disclosure.

[0374] Figure 12 shows a schematic diagram of the connection cable according to an embodiment of the present disclosure.

[0375] Figure 13A shows a schematic diagram of the plug according to an embodiment of the present disclosure.

[0376] Figure 13B shows a schematic diagram of the charging gun head according to an embodiment of the present disclosure.

[0377] Figure 14 shows a schematic diagram of the application of the charging device to communicate with the mobile terminal according to an embodiment of the present disclosure.

[0378] Figure 15 shows a schematic diagram of the cross-sectional structure of the charging device according to an embodiment of the present disclosure.

[0379] Figure 16 shows a schematic diagram of the structure of the charging device pulled by the pull rod mechanism according to an embodiment of the present disclosure.

[0380] Figure 17 shows a schematic diagram of the application of the charging device as a mobile power supply for indoor / outdoor use according to an embodiment of the present disclosure.

[0381] Figure 18 shows a schematic diagram of the application of the charging device to access the power grid through the mains socket according to an embodiment of the present disclosure.

[0382] Figure 19 shows a schematic diagram of the application of the charging device to directly output power through the bypass line according to an embodiment of the present disclosure.

[0383] Figure 20 shows a schematic diagram of the application of the charging device directly outputting power supply through a bypass line and charging the energy storage device in an embodiment of the present disclosure.

[0384] Figure 21 shows a schematic diagram of the application of the charging device continuing to output power supply through the energy storage device after the power supply is disconnected to realize the UPS function in an embodiment of the present disclosure.

[0385] Figure 22 shows a schematic diagram of the system of the charging device in an embodiment of the present disclosure.

[0386] Figure 23 shows a schematic diagram of the inverter circuit board in an embodiment of the present disclosure.

[0387] Figure 24A shows a schematic diagram of the power-on of the master control unit in an embodiment of the present disclosure.

[0388] Figure 24B shows a schematic diagram of the charging of the energy storage device in an embodiment of the present disclosure.

[0389] Figure 24C shows a schematic diagram of the charging of the multifunctional vehicle in an embodiment of the present disclosure.

[0390] Figure 24D shows a schematic diagram of the power supply to the external alternating current load in an embodiment of the present disclosure.

[0391] Figure 24E shows a schematic diagram of the direct current and alternating current output of the charging device in an embodiment of the present disclosure.

[0392] Figure 25 shows a schematic diagram of the direct current and alternating current input of the charging device in an embodiment of the present disclosure.

[0393] Figure 26 shows a schematic diagram of the connection circuit of the charging system in an embodiment of the present disclosure.

[0394] Figure 27 shows a schematic diagram of the multifunctional vehicle in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0395] The embodiments of the present disclosure are described below with reference to specific examples. Those skilled in the art can easily understand other advantages and effects of the present disclosure from the messages disclosed in the present disclosure. The present disclosure can also be implemented or applied in different specific embodiments or modules, and the details in the present disclosure can be modified or changed according to different views and modules without departing from the spirit of the present disclosure. It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0396] The embodiments of the present disclosure are described below with reference to specific examples. Those skilled in the art can easily understand other advantages and effects of the present disclosure from the messages disclosed in the present disclosure. The present disclosure can also be implemented or applied in different specific embodiments or modules, and the details in the present disclosure can be modified or changed according to different views and modules without departing from the spirit of the present disclosure. It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0397] In the description of the present disclosure, the expressions "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like mean that the specific feature, structure, material or characteristic accompanying the embodiments or examples is included in at least one embodiment or example of the present disclosure. Also, the specific feature, structure, material or characteristic accompanying an embodiment or example can be combined with one or more other embodiments or examples in a suitable manner. Furthermore, the different embodiments or examples accompanying the present disclosure and the features of the different embodiments or examples can be combined and combined with each other by those skilled in the art without contradiction, if not mutually exclusive.

[0398] In addition, the terms "first", "second", etc. are used only for the purpose of description and should not be construed as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "a group" is two or more, unless specifically limited.

[0399] In order to clearly illustrate the present disclosure, devices irrelevant to the description are omitted, and the same reference numerals are given to the same or similar constituent elements throughout the description.

[0400] Throughout the description, when it is said that a device is "connected" to another device, it includes not only the case of "direct connection", but also the case of "indirect connection" in which other elements are placed therebetween. In addition, when it is said that a device "includes" a certain constituent element, unless specifically stated to the contrary, it does not exclude other constituent elements, but means that other constituent elements can also be included.

[0401] Although the terms first, second, etc. are used herein to refer to various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, first and second parts, etc. are indicated. Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to include plural forms, unless the context clearly indicates otherwise. It should be further understood that the terms "comprise", "comprising", "include", "including", "contain", "containing", "have" and "having" indicate the presence of the stated feature, step, operation, element, module, item, kind, and / or group, but do not exclude the presence or addition of one or a group of other features, steps, operations, elements, modules, items, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". This definition is only an exception when the combination of elements, functions, steps or operations is inherently mutually exclusive in some way.

[0402] The professional terms used herein are used only to refer to specific embodiments and are not intended to limit the present disclosure. The singular form used herein, unless the context clearly indicates otherwise, also includes the plural form. In the specification, the meaning of "include" is to embody the specific features, regions, integers, steps, operations, elements, and / or components, and does not exclude the presence or addition of other features, regions, integers, steps, operations, elements, and / or components.

[0403] Although not differently defined, the technical terms and scientific terms used herein include the meanings commonly understood by those skilled in the art to which the present disclosure belongs. The terms defined in a commonly used dictionary are additionally explained to have meanings consistent with the related technical literature and the currently prompted messages, unless defined, and should not be over-interpreted as ideal or very formal meanings.

[0404] At present, in the daily needs of users, such as charging of multi-functional vehicles, charging of battery packs, indoor power consumption, outdoor power consumption, etc., each needs to be equipped with a matching device, resulting in cumbersome operation and poor experience in the use process of users. Moreover, various matching devices also increase the cost.

[0405] In view of this, the present embodiment provides a charging device that can flexibly realize the functions of each of the above matching devices to solve the problems in the related art.

[0406] As shown in FIG. 1, a schematic diagram of an electrical connection structure of a charging device 100 in an embodiment of the present disclosure is shown.

[0407] The charging device 100 includes a body 110, which is provided with an energy storage connection part 120, a power input part 130, and a power output part 140.

[0408] The energy storage connection part 120 is electrically connected to an energy storage device 200. In some embodiments, the energy storage device 200 includes a power battery pack. The battery type of the power battery pack includes one of a ternary power battery, a lithium iron phosphate battery, a lithium titanate battery, and a lead-acid storage battery. The packaging type of the power battery pack includes soft package (Pouch) and hard package, and the hard package packaging includes cylindrical (Cylindrical) and square (Prismatic).

[0409] The power input portion 130 is configured to connect to an external power source 300 to obtain power input. In some embodiments, the power input portion 130 can include an alternating current (AC) input 131 and a direct current (DC) input 132, i.e., the external power source 300 can include at least one of an external AC power source and an external DC power source. In some embodiments, the external AC power source 300 can include at least one of a utility power, an AC charging post, etc. The external DC power source can include, for example, a solar panel, a DC charging post, a vehicle cigarette lighter interface, or other electronic device interfaces such as a USB-A, a USB-C, a Lightening, etc. As an example, the rated input voltage of the charging device 100 can be 120 / 240 Vac, 60HZ / 50HZ.

[0410] As an example, the number of the AC input 131 and the DC input 132 can be one or more. In one example, the AC input 131 can support a wide range of input voltage of 100V / 110V / 120V~240V. The AC input 131 and the DC input 132 can be inputted separately or in combination. For example, the charging device 100 can support utility power input and solar panel input at the same time. Of course, the number of each type of input can be set according to the needs.

[0411] In some embodiments, the charging device 100 has an input rated power (e.g., the input rated power is not less than 3000W) when the external power source 300 charges the energy storage device 200. The charging device 100 has an output rated power (e.g., the output rated power is not less than 3200W) when the energy storage device 200 supplies power to an external load. The input rated power can be less than or equal to the output rated power. Specifically, the charging device 100 can be connected to a current of 15A and an AC voltage of 240V, thereby obtaining an input rated power of 3600W. In addition, a plurality of charging devices 100 can be connected in parallel to obtain an input rated power of 7200W.

[0412] Specifically, the volume of the charging device 100 can be about 51000cm3, and at this time, the ratio of the output power of the charging device 100 can be about 0.0705W / cm3. 3 Alternatively, the weight of the charging device 100 is about 23kg, and the power density of the charging device 100 is about 71 watts per pound.

[0413] In some embodiments, the charging device 100 determines the type of external power source 300 based on the detected input electrical parameters of the power input 130. For example, the charging device 100 includes a voltage and current detection circuit that can be used to detect the voltage, current, and the like of the external power source 300 connected to the power input 130, and determine the type of external power source 300 according to the specifications of the voltage and current. For example, the external power source 300 is a power grid or a charging pile, etc. In some embodiments, the charging device 100 can also detect the input electrical parameters of the power output 140 to determine the output power. For example, the charging device 100 includes a voltage and current detection circuit that can be used to detect the voltage and current of the external load connected to the power output 140, and thereby calculate the output power of the power output 140.

[0414] The power output 140 is used for power output, for connecting external loads. The power output 140 includes a first DC output end 141 and a first AC output end 142. The first DC output end 141 can include a vehicle charging output end 143 configured to connect to a multi-functional vehicle.

[0415] In some embodiments, the multi-functional vehicle can include a garden operation vehicle capable of performing garden operations such as garden pruning, mowing, spraying, etc. In some embodiments, the multi-functional vehicle can be a cleaning vehicle such as a snow blower, etc. In some embodiments, the multi-functional vehicle can include an agricultural operation vehicle such as a seeder, a tractor, etc. In some embodiments, the electric multi-functional vehicle can include a carrying vehicle such as a forklift, etc. In some embodiments, the electric multi-functional vehicle can include an off-road vehicle such as a utility task vehicle (UTV), etc. In some embodiments, the multi-functional vehicle can be user-controlled. Alternatively, it can also be self-walking / smart, i.e., it can plan a navigation route by itself, walk automatically, avoid obstacles, etc.

[0416] The first DC output end 141 can also include at least one of USB-A, USB-C, Lightening, cigarette lighter, etc. The first AC output end 142 can output at least one of 110V, 120V, 220V, 240V AC power. The number of each output end can be set according to the requirements. The output parameters of the cigarette lighter can be 12V / 10A.

[0417] Further, the other electronic device interface can include a USB-A3 / 4 output, which can have a parameter of 5V (4.8V-5.2V) / 2.1A. The other electronic device interface can include a USB-A1 / 2 output, which can satisfy QC2.0, QC3.0, and the like, and which can have a parameter of 5V (4.8V-5.2V) / 3A, 9V (8.8V-9.2V) / 3A, 12V (11.8V-12.2V) / 2.5A. The maximum output current / overload protection current can be 3A / 5.4A. The other electronic device interface can include a USB-C1 / 2 output, which can satisfy PD2.0, PD3.0, and the like, and which can have a parameter of 5V (5V-5.2V) / 3A, 9V (8.8V-9.2V) / 3A, 12V (11.8V-12.2V) / 3A, 15V (14.8V-15.2V) / 3A, 20V (19.8V-20.2V) / 5A. The overcurrent protection current value can be 5.4A.

[0418] The charging device 100 can be provided with a master control unit configured to be connected to the energy storage device 200, the power input portion 130, and the power output portion 140, and configured to control the external power supply 300 to supply power to the energy storage device 200, and to control the energy storage device 200 or the external power supply 300 to convert power to supply to the power output portion 140.

[0419] Specifically, the master control unit can include a single-chip microcomputer. Further, the charging device 100 can be provided with a control circuit board, and the master control unit can be located on the control circuit board.

[0420] The master control unit can be communicatively and / or electrically connected to the energy storage device 200, the power input portion 130, and the power output portion 140, so as to control the external power supply 300 to supply power to the energy storage device 200, and to control the energy storage device 200 or the external power supply 300 to convert power to supply to the power output portion 140. As an example, after the external power supply 300 supplies power to the energy storage device 200, the charging device 100 can be used as a portable power supply outdoors. At this time, the master control unit can use the energy storage device 200 to supply power to the power output portion 140. In another example, the external power supply 300 can supply power to the power output portion 140, so as to use the charging device 100 as a power strip.

[0421] At this time, the charging device 100 can further include an electric energy conversion module 150. The electric energy conversion module 150 is arranged in the body 110 and is electrically connected to the energy storage connection portion 120, the power input portion 130, and the power output portion 140.

[0422] The power conversion module 150 is configured to convert the power input from the external power source 300 connected to the power input 130 to charge the energy storage device 200 (as indicated by arrow A), and / or convert the power output from the external power source 300 or the energy storage device 200 to the power output 140 (as indicated by arrows B and C).

[0423] Accordingly, in scenarios where the energy storage device 200 is charged by the external power source 300 or the power output from the external power source 300 is provided to the power output 140, the power conversion module 150 can convert the input power type of the power input 130 to the output power type of the energy storage connection 120 and the power output 140. Alternatively, in scenarios where the energy storage device 200 is discharged to provide the power output to the power output 140, the power conversion module 150 can convert the output power type of the energy storage device 200 to the output power type of the power output 140. Specifically, the power conversion module 150 can have one or more of AC-DC, DC-AC (also known as inverter), DC-DC, and AC-AC conversion capabilities. In other embodiments, the AC-DC converter and the DC-AC converter can be replaced by a bidirectional inverter.

[0424] As shown in FIG. 2, a perspective view of the charging device 100 is shown in an embodiment of the present disclosure.

[0425] In the present embodiment, the body 110 forms a receiving portion 111. Exemplarily, the receiving portion 111 is formed by a receiving slot open at an upper end of the body 110. The receiving portion 111 is sized to receive one or more energy storage devices 200 of different sizes (specifications). The energy storage device 200 can be detachably inserted into and removed from the receiving portion 111 from the upper end opening.

[0426] The energy storage connection 120 can form an electrical connection with the energy storage device 200 inserted into the receiving portion 111. In further examples, the energy storage connection 120 can include a plurality of first connection ports (not shown in FIG. 2, refer to FIG. 5) provided at the receiving portion 111 for mating connection with at least one second connection port (not shown in FIG. 2, refer to FIG. 5) provided on the energy storage device 200. In some embodiments, the connection between the first connection port and the second connection port can be a direct plug-in manner. For example, one of the first connection port and the second connection port is a pin (PIN) and the other is a socket for mating with the pin. Alternatively, the direct plug-in manner can enable the plug-and-play of the energy storage device 200, improving user experience. Alternatively, the connection between the second connection port of the energy storage device 200 and the first connection port can be a hot-plug manner, so as to facilitate the user to charge and access at any time, thereby improving user experience.

[0427] In some embodiments, the position of the first connection port in the accommodation portion 111 is matched with the position of the second connection port on the energy storage device 200, such as the first connection port is arranged on the bottom surface of the accommodation portion 111, and the second connection port is arranged on the bottom surface of the energy storage device 200, so that the contact between the first connection port and the second connection port can be conveniently formed when the energy storage device 200 is in place in the accommodation portion 111. For example, the first connection port is arranged on the side wall surface of the accommodation portion 111, and the second connection port is arranged on the side surface of the energy storage device 200. Then, after the energy storage device 200 is in place in the accommodation portion 111, it is moved laterally to form the contact between the first connection port and the second connection port. Alternatively, in other embodiments, instead of the direct insertion structure, an electric wire can be led out from the charging device 100 to connect to the energy storage device 200 for charging or discharging.

[0428] Specifically, the accommodation portion 111 can accommodate energy storage devices 200 of different sizes. Different sizes of energy storage devices 200 correspond to different specifications of power battery packs.

[0429] In some examples, the energy storage device 200 can include a small-volume first power battery pack 200a (which can be referred to as a "small pack"), which can have one second connection port. The first power battery pack 200a can be used to power handheld electric / electronic tools, such as lawn mowers, blowers, hedge trimmers, etc., or can be used to power multi-functional vehicles in groups.

[0430] In FIG. 2, a scenario is shown in which the accommodation portion 111 of the charging device 100 accommodates a first power battery pack 200a implemented as a small pack. Exemplarily, the first connection port can be located at both ends of the length direction of the accommodation portion 111. Thus, the first power battery pack 200a in FIG. 2 is located at one end of the accommodation portion 111.

[0431] In some optional scenario examples, a user can use an electric / electronic tool that can be powered by a single first power battery pack 200a. When charging is needed, the user can remove the first power battery pack 200a in the electric / electronic tool and connect it to the charging device 100 for charging.

[0432] Exemplarily, the charging device 100 is provided with a cover 160 which is openable and closable at the opening. The cover 160 can keep the accommodation portion 111 closed in the closed state. Thus, the energy storage device 200 can be protected in the closed accommodation portion 111. Optionally, the cover 160 can form a sealed accommodation portion 111 in the closed state to achieve waterproofing of the accommodation portion 111. For example, a seal such as a seal strip or the like can be arranged between the periphery of the cover 160 and the contact portion of the body 110. When the charging device 100 is applied in an outdoor environment, the energy storage device 200 can be effectively protected from the invasion of sundries and water in the outdoor environment, thereby improving the reliability and service life of the product and the user experience. Exemplarily, the cover 160 and the body 110 can form a positioning relationship. In some embodiments, the cover 160 and the body 110 can form a snap-fit based on a snap structure (not shown), for example, the cover 160 and the body 110 are respectively provided with a snap elastic hook and a snap buckle or the like. In yet some embodiments, the snap structure can be provided with an operation portion (such as a key knob or the like) for accepting user operation to lock or unlock the snap relationship, so that the positioning relationship between the cover 160 and the body 110 is more firm.

[0433] As shown in FIG. 3, a structure schematic diagram of the charging device 100 provided with two first power battery packs 200a in an embodiment of the present disclosure is shown.

[0434] In FIG. 3, two first power battery packs 200a are placed in the accommodation portion 111 and can be respectively connected and fitted with the first connection ports at both ends of the accommodation portion 111. The two first power battery packs 200a can each be a soft pack battery, each be a hard pack battery, or one be a soft pack battery and the other be a hard pack battery.

[0435] It should be particularly noted that although only 1 and 2 small first power battery packs 200a are shown in FIGS. 2 and 3, it can be understood that by setting the shape / size of the accommodation portion 111 to cooperate with a preset number of first power battery packs 200a and setting a corresponding number of first connection ports, the number of first power battery packs 200a that can be received by the accommodation portion 111 can be changed and is not limited to FIGS. 2 and 3.

[0436] The energy storage device 200 can further include a second power battery pack 200b (which can be referred to as a “large pack”) which is relatively large in volume. The size of the accommodation portion 111 can cooperate with the size of the second power battery pack 200b. The second power battery pack 200b can have a plurality of second connection ports for respectively forming electrical connections with one first connection port to improve charging or discharging efficiency and also reduce temperature rise due to multi-port shunting to improve service life. The second power battery pack 200b can be used for power supply of a multi-functional vehicle or the like. The second power battery pack 200b can be a soft pack battery or a hard pack battery.

[0437] As shown in FIG. 4, a structural schematic diagram of the charging device 100 setting a second power battery pack 200b in an embodiment of the present disclosure is shown.

[0438] In FIG. 4, the second power battery pack 200b implemented as a larger volume is placed in the accommodating portion 111, and the two ends thereof can have a plurality of second connection ports to form electrical connections with the first connection ports at the two ends of the accommodating portion 111, respectively, so as to improve the power supply efficiency of the power battery.

[0439] In the embodiments of FIGS. 2-4, it is shown that the charging device 100 can charge energy storage devices 200 of different specifications. The following illustrates the charging scenarios of energy storage devices 200 of different specifications.

[0440] In one scenario example, the charging device 100 simultaneously charges two soft pack batteries of small package specifications. Exemplarily, the maximum output power of the charging device 100 is, for example, between 3000W-3400W. Assuming that the specification of the soft pack battery is 8 ampere-hours (Ah), which means that if a 1 ampere current is discharged, the battery can continuously discharge for 8 hours. Therefore, Ah corresponds to the rated capacity. If converted to amperes, 8 ampere-hours corresponds to 8000 milliampere capacity. If the charging device 100 simultaneously charges two soft pack batteries in the manner of FIG. 3, at the maximum output power of 3000W-3400W, a charging output of 75A-85A current at a charging voltage of 40V can be achieved. If the maximum charging current of a single soft pack battery is 30A, the charging device 100 can satisfy the fast charging of the maximum charging current of two soft pack batteries simultaneously.

[0441] It can be understood that, under the condition that the demand for simultaneous charging of two soft pack batteries can be well met, the scenario of charging a single soft pack battery can also be met.

[0442] In another scenario example, the charging device 100 simultaneously charges two hard pack batteries of small package specifications. The specifications of the hard pack batteries are, for example, 2Ah / 5Ah / 7.5Ah. The charging current limit of the 2Ah hard pack battery is 6A-8A, the charging current limit of the 5Ah hard pack battery is 12A, and the charging current limit of the 7.5Ah hard pack battery is 18A. If the maximum output power of the charging device 100 is 3000W-3400W, it can be calculated that the fast charging of two 7.5Ah hard pack batteries with a maximum charging current of 18A can be well met, and the fast charging demand of two 2Ah / 5Ah hard pack batteries can also be met.

[0443] In another scenario example, the charging device 100 simultaneously charges one hard-pack battery and one soft-pack battery of a small package specification. In combination with the above examples, if the charging current limit of the hard-pack battery is 8A and the charging current limit of the soft-pack battery is 30A, the charging device 100 can meet the fast charging requirements of the hard-pack battery and the soft-pack battery as long as it can output a charging current of 38A or more. According to the above two scenario examples, the fast charging requirements in this scenario can be well met.

[0444] In another scenario example, the charging device 100 charges a battery pack of a large package specification. The charging current limit of the battery pack is, for example, 40A. As an example, the charging device 100 can provide 1C 40A charging to the battery pack. Here, C represents the charging rate, and the charging rate C = charging current (A) / battery rated capacity (Ah). The greater the charging rate, the faster the speed of charging and discharging of the battery.

[0445] Referring to FIG. 2, as an example, the top of the body 110 is provided with a handle 112 on each side, which facilitates the user to hold the two handles 112 with both hands to lift the charging device 100. By providing handles on the opposite sides of the body 110, the user can evenly apply force to the charging device 100, which can save more effort when lifting the charging device 100. In other embodiments, if the weight of the charging device 100 is relatively small, the handle 112 can be provided on only one side, which can be held by the user with one hand. In yet other embodiments, the handle 112 can also be provided on the surface of the cover 160, and the number can be one. After the cover 160 is closed, the entire charging device 100 is similar to the form of a suitcase, which is convenient for the user to hold with one hand.

[0446] In order to facilitate the user to evenly apply force to lift the charging device 100, the charging device 100 can be arranged by layout and counterweight of components so that its center of gravity is located as close to the middle as possible, preferably at the central position. For example, the power conversion module 150 and the circuit board can be arranged in the middle of the charging device 100, and a counterweight block can also be fixedly arranged in the middle.

[0447] The energy storage device 200 further includes a battery pack 220, a switch unit 230, a power supply circuit 240, and an energy storage management control system 250. As shown in FIG. 5, a connection diagram of the energy storage device 200 and the charging device 100 in an embodiment of the present disclosure is shown.

[0448] In FIG. 5, the energy storage device 200 can be implemented as a large pack, which includes two second connection ports 210. The energy storage connection 120 includes two first connection ports 121. The first connection ports 121 are electrically connected to the second connection ports 210 one by one. As an example, each first connection port 121 can include a first charging positive electrode (C+), a first communication pin (COM), a charging negative electrode (P-), and the second connection port 210 includes: a second charging positive electrode (C+) connected to the first charging positive electrode, a battery positive electrode (P+) connected to the second charging positive electrode, a second communication pin (COM) connected to the first communication pin, and a battery pack negative electrode (P-) connected to the charging negative electrode. It can be understood that in other embodiments, the energy storage device 200 can also be implemented as a small pack, and one second connection port 210 is provided.

[0449] By charging the battery pack 220 through the double interface, the charging or discharging efficiency can be improved, and the port temperature rise can be reduced by the shunt of the two second connection ports 210. As an example, the current passing through the two second connection ports 210 can be substantially consistent, or can be adjusted and distributed according to the needs.

[0450] The energy storage management control system 250 can include an energy storage management control unit 251 and a front-end unit 252. As an example, the energy storage device 200 can also include a sensor group for detecting the state of the energy storage device 200, which can be used to detect the voltage, current, temperature, impedance, etc. of the battery pack 220 or other devices.

[0451] As an example, the second connection port 210 is connected to one end of the switch unit 230. The other end of the switch unit 230 is connected to the positive electrode of the battery pack 220 and is connected to the energy storage management control unit 251 through the power supply circuit 240 to supply power to the energy storage management control unit 251. As an example, the switch unit 230 can include two groups of transistors, one of which is labeled as a DSG transistor, and DSG represents discharge control. The other group of parallel transistors is labeled as a CHG transistor, and CHG represents charging control. The DSG transistor and the CHG transistor can be NMOS, and the common drain of each two is connected. The DSG transistor and the CHG transistor are turned on to turn on the loop for charging or discharging the battery pack 220.

[0452] As an example, the power supply circuit 240 can include a voltage conversion circuit and a connected voltage stabilizing circuit, which is used to convert the output voltage based on the power supply of the battery pack 220 to form an output voltage suitable for the energy storage management control unit 251. The voltage stabilizing circuit can output the output voltage after voltage stabilization to the energy storage management control unit 251. As an example, the output voltage of the battery pack 220 is direct current, and the power supply voltage of the energy storage management control unit 251 is direct current. The voltage conversion circuit can be implemented as a DC-DC circuit. The voltage stabilizing circuit can be implemented as a low dropout linear regulator (LDO)

[0453] Exemplarily, the energy storage management control unit 251 can include a power supply end 2511, a first communication end 2512, a second communication end 2513, a third communication end 2514, a voltage detection end 2515, a battery pack temperature detection end 2516, a transistor temperature detection end 2517, a real-time clock end 2518, a wireless communication end 2519, and the like. Each "end" can include one or more pins, and the number and type of "ends" can be varied as needed, without being limited thereto. In some embodiments, the energy storage management control unit 251 can include an MCU, a SoC, an FPGA, or other processing chips.

[0454] The power supply end 2511 is connected to the power supply circuit 240 to obtain a supply voltage.

[0455] The first communication end 2512 is connected to the communication pin of the front-end unit 252. In some embodiments, the first communication end 2512 can be implemented to comply with a communication protocol such as SPI, I2C, or the like.

[0456] The second communication end 2513 and the third communication end 2514 can form communication with the second communication pin (COM) in the two second connection ports 210 to transmit energy storage state information to the side of the charging device 100, including but not limited to charging or discharging voltage (such as the output voltage of a single battery in the battery pack 220, the total output voltage of the battery pack 220), charging or discharging current, temperature (such as the temperature of the battery pack 220, the temperature of the transistor), battery state information (such as the power level, charging and discharging state, health status, and the like), and the like. Moreover, through the communication connection of the second communication end 2513 and the third communication end 2514 with the second communication pin respectively, multi-channel communication between the charging device 100 and the energy storage device 200 can be formed, whereby the charging device 100 or the energy storage device 200 can determine whether the communication state of each channel is normal according to the multi-channel communication, and the multi-channel communication can be mutually backed up, thereby ensuring the reliability of the communication connection.

[0457] The voltage detection end 2515 can include one or more voltage detection pins, which can be used to connect a voltage detection circuit to obtain, for example, the total voltage of the battery pack 220, the voltage of the positive electrode of the battery, and the like.

[0458] The battery pack temperature detection end 2516 is used to obtain a battery pack 220 temperature signal representing the temperature of the battery pack 220. The battery pack temperature detection end 2516 can be connected to a temperature sensor that collects the temperature of the battery pack 220 to receive the battery pack 220 temperature signal transmitted by the temperature sensor.

[0459] The transistor temperature detection terminal 2517 is configured to obtain a transistor temperature signal representing the temperature of a transistor in the switching unit 230, such as the DSG transistor and the CHG transistor. The transistor temperature detection terminal 2517 can be connected to a temperature sensor configured to collect the temperature of the transistor, to receive the transistor temperature signal output by the temperature sensor.

[0460] The real-time clock terminal 2518 (RTC) can be connected to an external clock to obtain a real-time clock by frequency division, and the real-time clock can be used to accurately schedule tasks and manage time.

[0461] The wireless communication terminal 2519 can be connected to a wireless communication circuit to establish a wireless communication connection with the outside through the wireless communication circuit. As an example, the wireless communication circuit can include one or more of Bluetooth, WiFi, mobile communication circuit (3G / 4G / 5G module), Internet of Things communication circuit (NB-IOT, Zigbee, or Lora, etc.). The energy storage management control unit 251 can also send the energy storage state information to the charging device 100 through the wireless communication connection.

[0462] The front-end unit 252 includes a discharge control terminal 2521, a charging control terminal 2522, a second voltage detection terminal 2523, and a current collection terminal 2524, etc. In some embodiments, the front-end unit 252 can include an analog front-end circuit (AFE).

[0463] The discharge control terminal 2521 is connected to each DSG transistor to control the on-off of the DSG transistor. Specifically, the discharge control terminal 2521 can be connected to the gate of each DSG transistor implemented by MOS. The charging control terminal 2522 is connected to each CHG transistor to control the on-off of the CHG transistor. Specifically, the discharge control terminal 2521 can be connected to the gate of each CHG transistor implemented by MOS.

[0464] The second voltage detection terminal 2523 can include a plurality of voltage detection pins 25231, which can be connected to and detect the voltage of each single battery included in the battery pack 220, respectively.

[0465] The current collection terminal 2524 is connected to the negative electrode of the battery pack to collect the current of the battery pack 220. In some embodiments, the current collection terminal 2524 can be connected to the negative electrode of the battery pack through a current sampling circuit to collect the current. In a further example, the current sampling circuit can include a current sampling resistor.

[0466] In some embodiments, the front-end unit 252 can send the collected sensing data to the energy storage management control unit 251 through the communication connection. The energy storage management control unit 251 can collect various received sensing data to form energy storage state information, and send it to the charging device 100 connected by communication.

[0467] In some embodiments, the front-end unit 252 can determine whether overcharging or over-discharging occurs according to the voltage of the single battery detected by the second voltage detection terminal 2523, and then control the corresponding overcharge protection or over-discharge protection through the discharge control terminal 2521 or the charge control terminal 2522. For example, when the voltage of the single battery is detected to be lower than an over-discharge threshold, the front-end unit 252 can turn off the DSG transistors through the discharge control terminal 2521 to stop discharging. Alternatively, when the voltage of the single battery is detected to be higher than an overcharge threshold, the front-end unit 252 can turn off the CHG transistors through the charge control terminal 2522 to stop charging.

[0468] In some embodiments, the energy storage management control unit 251 can have a switchable working state and a sleep state, and can enter the sleep state in the idle state of the energy storage device 200 and be awakened by an external signal. For example, the energy storage management control unit 251 in the sleep state can be awakened by an external signal generated when the operating part (such as an operating key, etc.) on the energy storage device 200 receives a user operation. Alternatively, the energy storage management control unit 251 can be awakened by an external signal sent by the charging device 100, such as a received signal when performing handshaking. Alternatively, the energy storage management control unit 251 can also be awakened by a wake-up signal of the front-end unit 252. Alternatively, when the energy storage device 200 is initially powered on, the energy storage management control unit 251 can send a wake-up signal to the front-end unit 252 to activate the front-end unit 252, and then the front-end unit 252 can remain in the working state.

[0469] In some embodiments, the charging device 100 can also have a master control unit 1601, which can be used to control the charging or discharging of the energy storage device 200 by the charging device 100. Referring to FIG. 5, the master control unit 1601 can form a communication connection with the energy storage management control system 250 through a communication line, can obtain the energy storage state information (i.e., voltage, current, power, temperature, etc.) of the energy storage device 200, and can determine whether to perform charging or discharging with the energy storage management control system 250. For example, when charging is needed, if the charging voltage / current converted from the external power source does not match the energy storage device 200, charging is stopped in the case of overcharging, discharging of the energy storage device 200 is stopped in the case of over-discharging, and measures can also be taken in the case of overload and high temperature, and the energy storage device 200 is disconnected when necessary, etc., which can effectively protect the energy storage device 200 and the circuit of the charging device 100, and enhance the safety. In some embodiments, the master control unit 1601 can be implemented as a control circuit board provided with an MCU, a SoC, an FPGA or other processor chips, and other circuit modules.

[0470] In FIG. 2-4, a first side 113 (e.g., a front side) of the main body 110 is also shown. Referring to FIG. 6, the various output terminals of the power output portion 140 can be arranged in different regions on the first side 113.

[0471] In FIG. 6, the first side 113 is shown to have three regions arranged from left to right, defined as a first output interface region 1131, a second output interface region 1132, and a third output interface region 1133. In the first output interface region 1131, cigar lighter output terminals can be provided, which output direct current voltage. Three cigar lighter output terminals are shown in FIG. 6, including a 12V / 10A cigar lighter output terminal 141a, and two 12V / 3A cigar lighter output terminals 141b. In some embodiments, the 12V / 10A cigar lighter output terminal 141a can be used to connect to vehicle-mounted devices, such as a vehicle-mounted refrigerator, an air pump (for inflatable beds, inflatable tent pads, inflatable surfboards, etc.), and the like. Optionally, the 12V / 10A cigar lighter output terminal 141a can be provided with a dust cover 1411, which can be made of rubber, for example. The 12V / 3A cigar lighter output terminals 141b can also be referred to as DC5521 interfaces, which can be used to supply power to electrical devices such as routers, light bars, display power supplies, and the like. The output parameters of the DC5521 interfaces can be 12V / 3A.

[0472] In the second output interface area 1132, one or more first AC output terminals 142 can be arranged. Optionally, four first AC output terminals 142 are shown in the figure. Each first AC output terminal 142 can have the same output voltage, or different output voltages, or part of the first AC output terminals 142 have one output voltage and the other part of the first AC output terminals 142 have another output voltage. For example, the output voltage of each first AC output terminal 142 includes one of AC 110V, 120V, 220V, 240V, 380V, etc., which can be set according to the power demand in the application scenario. In some examples, each first AC output terminal 142 has the same output voltage, such as 220V, to meet the power specification requirements of the 220V domestic power supply commonly used in China. In other examples, based on the power supply requirements of the American power supply 120V or 240V, all first AC output terminals 142 can be 120V, or part of the first AC output terminals 142 can be 120V output voltage and the other part of the first AC output terminals 142 can be 240V output voltage. Considering that the power demand of 240V is lower than that of 120V, the number of first AC output terminals 142 with 120V output voltage can be greater than the number of first AC output terminals 142 with 240V output voltage. For example, among the four first AC output terminals 142, the number of first AC output terminals 142 with 120V output voltage is three, and the number of first AC output terminals 142 with 240V output voltage is one, etc. The first AC output terminal 142 can be used for refrigerators, microwave ovens, desktop computers, commonly used power tools, hair dryers, and other general appliances.

[0473] Taking the 120V first AC output terminal 142 as an example, if the output current is 15A, the output power of the 120V first AC output terminal 142 can be 1800W. If the output current is limited to be greater than 15A, the output power of the 120V first AC output terminal 142 can reach more than 1800W, which can well meet the requirements of low-voltage fast charging.

[0474] In the third output interface area 1133, one or more low-voltage first DC output terminals can be arranged. For example, the multiple USB terminals shown in FIG. 6, such as multiple USB-A and USB-C terminals. Optionally, some USB-A terminals can be ordinary USB-A terminals, with an output specification of 5V / 2A-3A, which can be used to power small electrical equipment such as table lamps, small fans, etc., and the number of examples is 2. Another USB-A terminal can be a fast charging interface, such as an 18W / 30W specification USB fast charging interface, with “QC” indicating support for QC fast charging protocol, which can be used to power mobile terminals such as mobile phones, tablets, notebooks, etc., and the number of examples is 2. In addition, the number of USB-C interfaces is two, one of which can support 100W fast charging output, and the other can be an example of supporting 18W fast charging output, which can be used to power mobile terminals such as mobile phones, tablets, notebooks, etc.

[0475] It can be understood that the above arrangement of various output terminal types, specifications, numbers, and positions of the output terminals of the power output part 140 is only an example, and can be changed according to actual needs. For example, the cigarette lighter output terminal is arranged in the third output interface area 1133, and the low-voltage DC terminal is arranged in the first output interface area 1131, which are interchanged. For example, the number of AC output terminals is reduced to 3. For example, the third output interface area 1133 is increased with a lightening interface, etc.

[0476] Referring to FIG. 6, an output control switch 1134 can be arranged in the first side 113, which can be used to accept user operation to control the on / off of power supply of all output interfaces in the first side 113.

[0477] In another optional example, each type of output interface can be controlled by a control switch to control the on / off of power supply. In FIG. 7A, each output terminal 141a, 141b in the first output interface area 1131 is controlled by at least one first control switch 1135 to control the on / off of power supply. Each output interface 142 in the second output interface area 1132 is controlled by at least one second control switch 1136 to control the on / off of power supply. Each output interface in the third output interface area 1133 is controlled by at least one third control switch 1137 to control the on / off of power supply.

[0478] For another example, in FIG. 7B, each first AC output terminal 142 can be configured with a second control switch 1136'. Specifically, the second output interface area 1132 includes four first AC output terminals 142, which are one-to-one correspondingly configured with four second control switches 1136', and each second control switch 1136' is used to control the on / off of one first AC output terminal 142.

[0479] In an optional embodiment, as shown in FIG. 6, a light strip 191, such as a LED or other type of light bar or bead, can be arranged in the first side 113. Exemplarily, the light strip 191 is arranged above each output interface. In a dark environment, the light strip 191 can be turned on to facilitate a user to plug in the output interface below. Further optionally, a brightness operation part 1911 can be provided on the first side 113 to adjust the brightness of the light strip 191, for accepting user operation to adjust the brightness of the light strip 191 to adapt to the lighting needs in different brightness scenarios. The power of the light strip 191 can be 3W.

[0480] In an optional embodiment, the first side 113 can further be arranged with a display screen 192. The display screen 192 can include a LED or a LCD, etc. The display screen 192 can provide a graphical user interface (GUI) to display the operating conditions of the charging device 100. As an example, the display screen 192 can be used to display at least one of the following information of the charging device 100: input and / or output object information, input and / or output power information, power information, fault and / or prompt information, communication status information, heat dissipation module information, time information, etc.

[0481] The input and / or output object information can be, for example, the input object of the power input part 130 (at least one of a vehicle cigarette lighter interface power supply, a solar cell, a mains input), the output object of the power output part 140 (a cigarette lighter, a multi-functional vehicle, an energy storage device 200), the interface status of the power output part 140 (such as the status of the USB-A, USB-C, AC, DC, etc. output interface), etc.

[0482] The input and / or output power information can further include one or more of, for example, current input power, input power upper limit, current output power, output power upper limit, etc. As an example, the power information can include the remaining power of the energy storage device 200 to which the charging device 100 is connected. As an example, the fault and / or prompt information can include one or more of, for example, input fault, output fault, high temperature environment prompt, low temperature environment prompt, output power overload warning, short circuit, overheating, other faults, etc. In some embodiments, the charging device 100 can trigger a prompt on the display component to light up the overload prompt in response to an output power overload, to prompt the user to take action, such as turning off a load power supply, etc. If the overload still exists, the charging device 100 can cut off the power supply of the newly added load when a preset overload bearing limit duration is reached. For example, if the last load connected to the four AC output terminals is a hair dryer, and the hair dryer causes an overload when it is running, then the hair dryer output terminal can be turned off. Alternatively, if turning off one load still causes an overload, then the last load connected can also be turned off according to the connection time, and so on until the overload is eliminated.

[0483] The charging device 100 can be provided with a fan to dissipate heat from the energy storage device 200. The heat dissipation module information can include the working state information of one or more heat dissipation fans.

[0484] The time information can include one or more of, for example, usage time, charging time, clock information, etc. For example, the time information can include the estimated discharge duration of the energy storage device 200. Specifically, the main control unit 1601 of the charging device 100 can obtain the remaining capacity (Ah) of the energy storage device 200, and then obtain the current current value (I), and then the estimated discharge duration can be obtained by dividing the remaining capacity by the current current value.

[0485] Further, the charging device 100 can further include an interactive component. The interactive component is arranged on the body 110 and is used to accept operations to adjust / distribute the input / output power of the charging device 100. In one example, the interactive component can be implemented as a physical operation key / button, etc. In another example, the interactive component can be implemented on the same touch screen as the display component, and the interactive component can be implemented as a virtual operation key / button displayed on the touch screen.

[0486] Specifically, the user can adjust or distribute the power of different output interfaces of the power supply output part 140 of the charging device 100 by operating the interactive component, such as adjusting the power distribution between multiple DC output terminals, or increasing or decreasing the output power of the power supply output part 140, etc.

[0487] As shown in FIG. 8, a structural schematic diagram of the second side 114 of the charging device 100 is shown. The second side 114 is arranged opposite to the first side 113.

[0488] As an example, in the second side 114, there is an input interface region 1141 in which the power input part 130 is arranged. As an example, the power input part 130 includes an AC input end 131.

[0489] As an example, in the second side 114, there is also a vehicle charging interface region 1142 in which the vehicle charging output end 143 for charging the multi-functional vehicle is arranged. Optionally, the input interface region 1141 and the vehicle charging interface region 1142 can be arranged along the length direction of the body 110.

[0490] Optionally, the vehicle charging output end 143 can be arranged in the accommodating groove formed by the vehicle charging interface region 1142 and can be protected by a closable protective cover 1431. As shown in FIG. 9, the protective cover 1431 can be rotatably opened and closed and is hingedly connected between one end and the body 110. In FIG. 8, the protective cover 1431 is shown in a closed state, and the vehicle charging output end 143 cannot be connected to the multi-functional vehicle for charging. In FIG. 9, the protective cover 1431 is shown in an open state, and the vehicle charging output end 143 can be connected to the multi-functional vehicle for charging. The protective cover 1431 can be opened to one side as shown in the figure, or can be opened to the other side, or can be opened upward or downward, or can also be rotated to open parallel to the side 114.

[0491] As shown in FIGS. 10 and 11, the AC input end 131 of the charging device 100 can be connected to an external AC power source (such as a charging pile, a mains power supply, etc.), and as an example, a mains socket 400 is shown, and the vehicle charging output end 143 is connected to the charging interface 510 on the multi-functional vehicle 500 through a connecting cable 600 to charge the multi-functional vehicle 500.

[0492] As an example, the position of the charging interface 510 on the multi-functional vehicle 500 can be related to the arrangement position of the power battery pack on the vehicle 500, such as the power battery is arranged at the rear end of the vehicle 500, and the charging interface 510 can be located at the rear end. For example, the charging interface 510 of the multi-functional vehicle 500 in the figure is located at the rear end. Alternatively, in other embodiments, if the power battery pack is arranged at the front end of the vehicle, the charging interface can also be located at the front end of the vehicle. In other embodiments, the charging interface can also be located at the side of the vehicle, which is not limited by the figures.

[0493] In some embodiments, the power battery pack used by the multi-functional vehicle 500 can include a plurality of large packs, a large pack combined with a plurality of small packs, a plurality of large packs combined with a plurality of small packs, etc. Referring to the examples of the scenarios described above, the charging device 100 can charge the large and small packs packaged in different specifications of soft packs or hard packs.

[0494] Referring to FIG. 12, a connection cable 600 is shown. One end of the connection cable 600 can be a plug 610 configured to be connected to the vehicle charging output 143 of the charging device 100. The other end of the connection cable 600 can be a charging gun head 620 configured to be connected to the charging interface 620 of the multi-functional vehicle 500.

[0495] Referring to FIG. 13A, the plug 610 is shown. The plug 610 includes a first charging probe 611 and a first communication probe 612. Referring to FIG. 13B, the charging gun head 620 includes a second charging probe 621 and a second communication probe 622. It can be understood that the plug 610 and the charging gun head 620 are not limited to those shown in the drawings. The specific connection mode between the charging device 100, the connection cable 600, and the multi-functional vehicle 500 is described in detail later in this specification.

[0496] As shown in FIG. 14, the charging device 100 can form a communication relationship with an external device. For example, the charging device 100 and a mobile terminal 700 (such as a smart phone, a tablet computer, a notebook computer, etc.) can form a communication relationship. The mobile terminal 700 can run an application program (APP). The mobile terminal 700 can collect the charging and discharging status information and the energy storage status information of the charging device 100 from the charging device 100 through the communication connection between the charging device 100 and the mobile terminal 700, and present them to the user, or control the charging or discharging function of the charging device 100.

[0497] For example, in some optional scenario examples, the charging device 100 sends the charging and discharging status information of the charging device 100 to the external device to form a display on the external device. For example, the charging and discharging status information can include the power information of each input and / or output interface of the charging device 100, and / or the total power information of the input / output, which is sent to the mobile terminal 700. A graphical user interface can be formed on the mobile terminal 700, in which the power information and / or the total power information are displayed to enable the user to understand the current operating status of the charging device 100, so as to determine the control of the charging or discharging mode / power of the charging device 100.

[0498] In some optional scenario examples, the charging device 100 can also send the connected energy storage device 200 transmitted energy storage state information to the mobile terminal 700 and display, and the user can view the energy storage state information in the graphical user interface of the APP of the mobile terminal 700. By viewing the energy storage state information, the user can understand the running state of the energy storage device 200, and can decide to control the charging or discharging of the energy storage device 200.

[0499] In still some scenario examples, the charging device 100 can be controlled by the external device 700 to select to perform the charging or discharging mode and / or select the priority order of the charging or discharging object. For example, the user can control the charging and discharging actions of the charging device 100 according to one or more combined factors of the working condition of the charging device 100 represented by the charging and discharging state information, the working condition of the energy storage device 200 represented by the energy storage state information, and the user's own needs, or select the priority of the charging or power supply object. For example, the user finds that the tablet computer is out of power in the morning, needs to be used in the evening, but the user is about to leave. If the tablet computer is left at home for charging, since there is no one at home at present, the user will worry that there may be a certain risk in charging. Therefore, the user sets the charging start time after the scheduled time period when the family members return home or at a preset time. In this way, the user's demand that the tablet computer is charged when returning home can be met, the safety of charging when there is someone at home can be taken into account, and the family members do not have to be bothered to help the user to charge, achieving multiple purposes at once and having good user experience. For another example, the user uses the charging device 100 to charge the multifunctional vehicle and the energy storage device 200 at the same time, and the energy storage device 200 may be used for electric tools after being charged. The user needs to use the electric tools for work. The multifunctional vehicle is full of power, and the user does not intend to use it temporarily. Therefore, for the user, the priority of charging the energy storage device 200 is higher than that of charging the multifunctional vehicle, so the user can set the charging device 100 to charge the energy storage device 200 first, and then charge the multifunctional vehicle after the energy storage device 200 is full or reaches a certain preset threshold.

[0500] For another example, the user sends an instruction to select the charging or discharging of the energy storage device 200 to the charging device 100 by operating the APP of the mobile terminal 700, so as to control the charging device 100 to perform the charging or discharging of the charging device 100 according to the instruction. For another example, the user selects to stop the power supply of the corresponding output interface to the mobile power supply that is currently being charged or to the electric appliance or socket that does not need to be powered by operating the APP of the mobile terminal 700.

[0501] In some other scenario examples, the charging device 100 is adjusted or distributed input / output power by external devices. For example, the user selects to adjust the power distribution between two energy storage devices 200, such as to lower the charging power of one and to raise the charging power of the other energy storage device 200 to be charged first, by operating the APP of the mobile terminal 700. In one scenario, the two energy storage devices 200 are needed for different power tools, and the energy storage device 200 of the power tool with higher priority, such as the power tool to be used first, can be distributed with higher charging power within its specification limit, and the energy storage device 200 of the other power tool with lower priority can be lowered in charging power.

[0502] For another example, the user selects to distribute / adjust the output power of two electrical appliances by operating the APP of the mobile terminal 700. In one scenario, the user uses two alternating current (AC) electrical appliances, such as a refrigerator and a washing machine, and the user selects to adjust the power distribution between the two electrical appliances, such as to lower the power of the refrigerator and to raise the power of the washing machine, by operating the APP of the mobile terminal 700.

[0503] In the above scenario examples, optionally, to prevent the user from operating improperly to cause overcharging, over-discharging, overloading, high temperature, or other adverse consequences, the charging device 100 can be designed with a parameter threshold design judgment condition corresponding to overcharging, over-discharging, overloading, high temperature, or other abnormalities / faults in advance, and the judgment condition is used to judge whether the user operation instruction is allowed to be executed, and if not, the user's adjustment can be rejected.

[0504] In the above scenario examples, the user needs to have control authority over the charging device 100, and if the user's identity is not trusted, it can cause security problems. Therefore, in some embodiments, the charging device 100 can communicate with the mobile terminal 700 to authenticate the user's identity, and only after the authentication is passed, the control authority corresponding to the user's identity is opened. In some embodiments, different types of users can have different control authorities. As an example, different types of users can be different types of adults and minors, different types of hosts and guests, different types of self, spouse, parent, child, close relatives, and distant relatives. The control authority of an adult can be higher than that of a minor, the control authority of a host can be higher than that of a guest, and the control authorities of self, spouse, parent, child, close relatives, and distant relatives can be sequentially reduced, and can be partially the same, such as the control authorities of self and spouse.

[0505] As shown in FIG. 15, a cross-sectional structural schematic diagram of the charging device 100 in an embodiment of the present disclosure is shown.

[0506] The accommodating portion 111 can be formed in the main body 110 for accommodating the energy storage device, and the accommodating space 117 can be formed in the main body 110 for accommodating the power conversion module 150. As an example, the accommodating portion 111 is open at the top and the bottom is above the accommodating space 117. Alternatively, the bottom of the accommodating portion 111 can be separated from the accommodating space 117 by a partition, so that the energy storage device placed in the accommodating portion 111 downwardly will not enter the accommodating space 117. The accommodating space 117 can also be used to set control components, such as setting control circuit boards, etc.

[0507] Alternatively, as shown in FIG. 15, the accommodating portion 111 is provided with a first heat dissipation module 800 communicating with the outside, which can include a plurality of fans 801. As can be seen in FIG. 2, the main body 110 is provided with a ventilation portion 118 at each end of the length direction, and the accommodating portion 111 can communicate with the outside through the ventilation portion 118. Each fan 801 can be positioned corresponding to one of the ventilation portions 118, and can be used to exhaust air outwardly through the ventilation portion 118 to dissipate heat from the energy storage device. In another embodiment, the fan 801 can also be provided with a pair of fans, respectively corresponding to two ventilation portions 118 on both sides.

[0508] As shown in FIG. 8, the ventilation portion 118 can include a plurality of air holes 1181 spaced apart, which can reduce the entry of dust compared to the structure of being completely hollowed out. Since the charging device 100 can be used outdoors, the main body 110 can further form a grid structure 119 outside the ventilation portion 118 to prevent foreign matter from entering.

[0509] Alternatively, the accommodating space 117 is provided with a second heat dissipation module 900 communicating with the outside. Further alternatively, the second heat dissipation module 900 can include a pair of fans 901, 902. The height of the ventilation portion 118 can at least partially cover the communication range of the ports of the accommodating portion 111 and the accommodating space 117. The fans 901, 902 can be respectively provided on both sides of the main body 110 corresponding to the positions of the ventilation portions 118.

[0510] In some embodiments, the power required for the first heat dissipation module 800 and the second heat dissipation module 900 to work can be provided by the energy storage device 200, or by the power input portion 130 to access external power supply.

[0511] As also shown in FIG. 8, the bottom of the main body 110 can be provided with a rolling mechanism 115 for facilitating movement of the charging device 100, including one or more rollers 1151. As shown in FIG. 8, a pair of rollers 1151 are provided near the second side 114. The main body 110 is also provided with a pull rod mechanism 116, the upper end of which can be telescopic and held by the user to pull the charging device 100. In cooperation with the rolling of the rolling mechanism 115, the charging device 100 can be easily pulled by the user to the destination location.

[0512] Referring to FIG. 16, a schematic diagram of the structure of the pulling rod mechanism 116 pulling the charging device 100 is shown.

[0513] The pulling rod mechanism 116 and the rolling mechanism 115 can be arranged on the same side, i.e., the pulling rod mechanism 116 and the rolling mechanism 115 are arranged close to the second side 114. When the pulling rod is pulled, the charging device 100 is tilted towards the side where the pulling rod is located, so that the bottom of the charging device 100 far from the side end of the rolling mechanism 115 is lifted up and contacts the ground, and the friction is small. The user can pull the pulling rod mechanism 116 to easily drive the charging device 100 to move.

[0514] Optionally, the bottom of the body 110 can also be provided with a foot pad structure 1100 for supporting the body at a certain height. The foot pad structure 1100 can include a plurality of foot pad portions 1101 uniformly distributed on the bottom. The plurality of foot pad portions 1101 can have the same height. For example, the extension height of the foot pad structure 1100 outside the bottom of the body 110 is greater than the extension height of the rolling mechanism 115, i.e., the extension height of the foot pad portion 1101 is greater than the extension height of the rolling wheel 1151. It can be understood that when the charging device 100 is restored from the tilted state in FIG. 16 to the vertical state, the foot pad structure 1101 contacts the ground. Since the extension height of the foot pad structure 1101 is greater than the extension height of the rolling mechanism 115, the rolling mechanism 115 can be suspended, contact the ground without force, or contact the ground with small force, i.e., the rolling mechanism 115 does not have to be the fulcrum for supporting the ground as the main support, thereby effectively protecting the rolling mechanism 115 from damage and prolonging the service life of the rolling mechanism 115.

[0515] As shown in FIG. 8, for example, the pulling rod mechanism 116 can be arranged between the input interface region 1141 and the vehicle charging interface region 1142 in the side, filling the space between the two regions, so that the overall structure is more compact.

[0516] For example, the pulling rod mechanism 116 can be a frame structure, which forms a hollow portion. That is, the hollow portion between the pair of parallel rods in the pulling rod mechanism 116. In order to utilize the space of the hollow portion, the side where the pulling rod mechanism 116 is arranged can be provided with an openable and closable storage structure 1000 corresponding to the position of the hollow portion. For example, the storage structure 1000 can include a storage box body 1001 and a storage cover 1002.

[0517] The storage box body 1001 has a storage space and is open on the outside. In some embodiments, the storage box body 1001 can be formed as part of the body 110, or the storage box body 1001 is mounted and fixed on the body 110.

[0518] The storage cover 1002 covers the outer opening of the storage box body 1001 and is arranged in an openable and closable manner. The storage cover 1002 is opened to expose the internal storage space. The storage space can be used to place the power cord of the charging device 100, such as a 120V or 240V AC power cord, or other items, without limitation. Exemplarily, the storage cover 1002 can be hinged at one end (e.g., the lower end) to the storage box body 1001 and can be opened at the other end (e.g., the upper end). Exemplarily, a snap-fit structure can be formed between the openable end of the storage cover 1002 and the storage box body 1001. In some embodiments, a press-type opening and closing lock mechanism can be arranged between the openable end of the storage cover 1002 and the storage box body 1001, that is, the user presses the openable end of the storage cover 1002, and the storage cover 1002 is opened. Pressing it once more, the openable end of the storage cover 1002 is locked with the storage box body 1001. Since the structure of the press-type opening and closing lock mechanism is relatively common, it is not described here.

[0519] It should be particularly noted that the implementation of the rolling mechanism 115 and the pull rod mechanism 116 in the above diagram is only an example, and can be changed in other embodiments. For example, the rolling mechanism 115 can include multiple rollers 1151 located at the four corners of the bottom of the charging device 100, and the pull rod mechanism 116 can be movably arranged on the body 110, such as being hinged at the bottom end and being movable at the upper end. Thus, when the user pulls the upper end of the pull rod mechanism 116, the upper end will rotate outward away from the charging device 100, and the charging device 100 will not be tilted and moved, and the multiple rollers 1151 at the four corners can also be easily pulled and moved by the user.

[0520] In some embodiments, the charging device 100 can be arranged in a desktop, wall-mounted, or embedded manner in a use scenario. Corresponding to the wall-mounted arrangement, the charging device 100 can be provided with a hanging assembly for wall mounting on the body 110. In some examples, the hanging assembly can include a hook mechanism. In some examples, the hanging assembly can include a hanging bracket, such as a bracket that can be telescopically extended to abut against two opposite vertical surfaces to be suspended, or a bracket that is arranged or combined with a specific structure of a wall, without limitation.

[0521] In the examples of FIGS. 2, 3, 4, 10, 11, and the like, some application scenarios of using the charging device 100 to charge energy storage devices 200 and vehicles of different specifications are shown. Some other application scenarios are exemplarily described below.

[0522] Further, in outdoor scenarios, such as camping, the user can need to play music at a high volume, eat hot pot, etc., and the mobile power supply commonly used for mobile phones and tablets cannot meet this demand, and a specific outdoor energy storage mobile power supply is needed. In one scenario example, as shown in FIG. 17, the charging device 100 can access the first power battery pack 200a for use as an indoor / outdoor mobile power supply to power the sound equipment 1200 and the electric hot pot 1300. As an example, the main body 110 can be configured in a portable structure, and the first power battery pack 200a can be inverted into alternating current by the power conversion module 150 and then supplied power through the power output part 140.

[0523] It can be understood that in indoor scenarios, such as gatherings in the yard or barbecues, the mobile power supply formed by the charging device 100 can also be used to supply power to electrical appliances.

[0524] In one scenario example, the power input part 130 of the charging device 100 is connected to the power grid for use as an uninterruptible power supply, and / or uses the power grid to charge the connected energy storage device 200 during the price trough period of the power grid, and stops charging the energy storage device 200 during the price peak period of the power grid. Specifically, as shown in FIG. 18, the power input part 130 of the charging device 100 includes at least one alternating current input end 131 connected to the power grid through a wall plug or a power socket 400. When an abnormality in the output of the power grid is detected, the charging device converts the power of the energy storage battery pack into alternating current and connects it to the power grid as a home backup power supply. When the energy storage device is low in power, the user can set the charging device to automatically charge the energy storage device from the power grid during the peak / valley period of electricity consumption according to their own needs. Specifically, according to the user's settings, the energy storage device can be charged during the price trough period and stopped during the price peak period, and the power output part can be used to supply power to the electrical equipment using the energy storage device.

[0525] For example, in the peak-valley time-of-use electricity price, 24 hours a day is divided into peak, flat, valley, and other periods, and each period has different electricity price levels. For example, from 8 a.m. to 12 p.m. is the peak price, from 12 p.m. to 5 p.m. is the flat price, from 5 p.m. to 9 p.m. is the peak price, from 9 p.m. to midnight is the flat price, and from midnight to 8 a.m. the next day is the valley price.

[0526] Therefore, the user can set the charging time of the energy storage device 200 from midnight to 8 a.m. the next day, and use the power of the energy storage device 200 during the peak price period from 8 a.m. to 12 p.m. and from 5 p.m. to 9 p.m., or not use the power of the energy storage device 200, and during other flat periods, the user can choose whether to charge, discharge, or not charge / discharge the energy storage device 200 according to the power of the energy storage device 200 and other factors.

[0527] In one scenario, the energy storage connection 120 of the charging device 100 is connected to the energy storage device 200, the power input 130 is connected to the power outlet 400, and the power output 140 is connected to the external load. In this scenario, the charging device 100 can implement various power supply modes, such as supplying power to the external load using the power outlet, i.e., equivalent to using a power strip. Alternatively, the charging device 100 can supply power to the external load using the power outlet while charging the connected energy storage device 200. Alternatively, the charging device 100 supplies power to the external load using the power outlet, and when the power supply is disconnected (e.g., power failure, socket failure, or other conditions), the energy storage device 200 is used to supply power to the power output 140, ensuring continuous power supply. Therefore, in this scenario, the charging device 100 can be used as a "charging and using UPS" in an indoor scenario. The principle is further described below.

[0528] For example, referring to FIGS. 19-21, in an indoor scenario, the charging device 100 is connected to the energy storage device, the power input 130 is connected to the power outlet 400, and the power output 140 is connected to the personal computer 1400.

[0529] For example, a switch A is formed between the AC input 131 and the first AC output 142, and the control end of the switch A is connected to the main control unit 1601. As shown in FIG. 19, when the AC input 131 is connected to the power outlet 400, the switch A can be preferentially turned on to transmit the external AC power to the first AC output 142 to supply power to the load 1400. In this case, the charging device 100 is equivalent to a power strip.

[0530] As shown in FIG. 20, when the AC input 131 is connected to the power outlet 400 and the energy storage device 200 is not fully charged, the switch A can be turned off to charge the energy storage device 200 while supplying power to the load 1400, thereby realizing the "charging and using" function.

[0531] Optionally, the charging device 100 can limit the charging power of the charging power supply by detecting the input power of the external AC power supply of the power input 130, so that the power conversion module 150 limits the charging power of the charging power supply based on the input power of the external AC power supply. For example, the charging power can be limited to the result of the safe output power of the external AC power supply minus the output power of the AC output and the safe margin power. For example, the safe output power of the external AC power supply provided by the socket is 1440W, and the output power of the power output 140 is used by the electrical device 900W, leaving a safe margin of 100W, and the remaining 440W can be used to charge the energy storage device 200. In optional embodiments, if the electrical device has a large power change, for example, because of the on-off of the switch, the output power changes more than 200W, according to the calculation method of the above charging power limitation, the charging power can be adjusted in real time, for example, if the power of the electrical device decreases by 200W, the output charging power of the power conversion module 150 increases by 200W. If the power of the electrical device increases by 200W, the output charging power of the power conversion module 150 decreases by 200W. In some embodiments, small power fluctuations during normal operation can not affect the charging power.

[0532] As shown in FIG. 21, when the AC input 131 is not connected to the external AC power supply, or the AC input 131 is connected to the socket 400 but the power is off, the power conversion module 150 uses the electrical energy stored in the energy storage device 200 to supply power to the electrical device 1400. For example, the DC voltage output by the energy storage device 200 is inverted to form an AC voltage and output at the first AC output 142. At this time, even in the scenario of power failure, the power supply using the energy storage device 200 can still maintain the power supply to the original electrical device. In addition, the DC voltage output by the energy storage device 200 can also be converted by DC-DC to form a DC voltage (such as 12V, 5V, etc.) and output at the DC interface (such as cigarette lighter, USB-A, USB-C, etc.).

[0533] Referring to FIG. 22, the specific components of the charging device 100 are described as follows. The electrical control function of the charging device 100 can be realized by multiple circuit boards and multiple electronic components. The charging device 100 can include an inverter circuit board 1500, a control circuit board 1600, and a display circuit board 1700. The inverter circuit board 1500 integrates the power conversion module 150. The control circuit board 1600 integrates a single-chip microcomputer and multiple communication circuits. The display circuit board 1700 can integrate the power output 140, the display screen 192, etc. The inverter circuit board 1500 can be located in the accommodation space 117. The control circuit board 1600 can be located in the second side surface 114, and the display circuit board 1700 can be located in the first side surface 113. At the same time, the power input 130 and the car charging output 143 can be integrated in the second side surface 114.

[0534] Referring to FIG. 22 and FIG. 23, FIG. 23 is a schematic diagram of the inverter circuit board 1500. The inverter circuit board 1500 can include a plurality of ports, which can include a second DC output interface 1510 outputting DC power, an AC input interface 1520 connected with the AC input end 131 (mains), an auxiliary power terminal 1530 outputting DC power as an auxiliary power supply, a second AC output interface 1540 outputting AC power, a photovoltaic interface 1550 electrically connected with the DC input end 132 (solar cell), an RS485 communication terminal 1560 (a plurality of RS485 communication terminals are EN, RS485A, RS485B, BAT-, +24V, PV+, BAT+ in sequence) supporting RS485 communication, a multifunctional communication terminal 1570 supporting other communication protocols (CAN-H, CAN-L, 0V, S1, P1, C1, O1, 5V), a fan terminal 1580 connected with a fan, and a communication terminal 1590 for multi-machine parallel connection. In addition, the inverter circuit board 1500 can further include a power conversion control unit 1591.

[0535] Specifically, the second AC output interface 1540 can be integrated into the first side surface 113. The AC input interface 1520 and the photovoltaic interface 1550 can be integrated into the second side surface 114. The second DC output interface 1510 is configured to supply power to the first DC output end 141 (the vehicle charging output end 143, USB-A, USB-C, Lightening, and cigar lighter, etc.) and the energy storage device 200.

[0536] It can be understood that a plurality of elements can be integrated on the inverter circuit board 1500, so as to realize DC-DC, DC-AC, AC-DC, and AC-AC functions. Further, the inverter circuit board 1500 can also realize bidirectional inversion. That is, the inverter circuit board 1500 can not only convert the AC power input by the AC input interface 1520 into DC power and output from the second DC output interface 1510, but also convert the DC power input from the second DC output interface 1510 into AC power and output from the second AC output interface 1540.

[0537] Further, regarding the AC output of the inverter circuit board 1500, the rated output voltage can be 120V (110V-130V). The output voltage frequency can be 60HZ (59.5HZ-60.5HZ). The output waveform can be a sine wave. The output current harmonic can be ≤3%. The output voltage regulation can be ±5%. The efficiency can be 90%. The inverter circuit board 1500 can have short circuit protection and overload protection. The short circuit protection is not self-recoverable and requires a power on and off. The overload protection is set to 105%-130% of the rated load for 10s protection, 131%-150% of the rated load for 1.5s protection, and greater than 150% of the rated load for 500ms protection. The current load is 7200W for 500ms protection.

[0538] Regarding the DC input of the inverter circuit board 1500, the rated input voltage can be 51.2V (40V-58.8V). The under-voltage protection can be at 40.0V (39.5V-40.5V). The over-voltage protection can be at 58.5V (58V-59.0V). The float voltage can be at 58.2V (58.0V-58.4V).

[0539] Regarding the utility charging (e.g., to the energy storage device 200) of the inverter circuit board 1500, the input voltage range can be between 100V-240V. The input frequency can be between 45HZ-65HZ. The input current can be 14.5A±0.5A. The charging output can be 35V-58.2V DC. The charging conversion efficiency can be 89%.

[0540] The PF value (Power Factor) of the inverter circuit board 1500 can be greater than 0.9 at the rated full load. The static power consumption of the inverter circuit board 1500 can be less than 200uA. The THD (Total Harmonic distortion) of the inverter circuit board 1500 can be less than 3% at the rated full load. The operating efficiency of the inverter circuit board 1500 can be greater than 0.91 at 57V rated full load.

[0541] Referring to FIG. 22, the control circuit board 1600 can include a master unit 1601, a battery pack communication unit 1602, a voltage sampling unit 1603, a current sampling unit 1604, a current sampling circuit 1605, a power unit 1606, a driving unit 1607, an isolation unit 1608, a vehicle charging communication unit 1609, a pre-charging unit 1610, an anti-backflow unit 1611, a first switch unit 1612, a first step-down unit 1613, a second step-down unit 1614, a second switch unit 1615, a fan unit 1616, a panel communication unit 1617, an inverter communication unit 1618, a clock unit 1619, a remote control unit 1620, a cover monitoring unit 1621, and a log unit 1622.

[0542] The power conversion control unit 1591 is in communication connection with the inverter communication unit 1618, and the auxiliary power terminal 1530 is connected to the anti-backflow unit 1611, configured to supply power to the master unit 1601.

[0543] The display circuit board 1700 can include a panel control unit 1710, a panel switch unit 1720, a display screen control unit 1730, and a light strip control unit 1740. The display screen control unit 1730 is connected to the display screen 192. The light strip control unit 1740 is connected to the light strip 191.

[0544] It can be understood that through the above-mentioned inverter circuit board 1500, control circuit board 1600 and display circuit board 1700, various functions of the charging device 100 are realized. The above-mentioned circuit boards can have multiple power lines and communication lines. The following exemplary describes several power lines and communication lines. It can be understood that the power lines and communication lines in the present specification are not limited to the following description, and the lines of functions that can be realized through the inverter circuit board 1500, the control circuit board 1600 and the display circuit board 1700 are within the protection scope of the present specification.

[0545] Firstly, the above-mentioned circuit boards can have multiple power lines.

[0546] In one embodiment, the main control unit 1601 needs to be powered. Referring to FIG. 24A, the main control unit 1601 can be powered by the energy storage device 200 or the auxiliary power terminal 1530. Specifically, the energy storage device 200 and the auxiliary power terminal 1530 can be connected to the input terminal of the anti-backflow unit 1611, the output terminal of the anti-backflow unit 1611 is connected to the first switch unit 1612, the first voltage reduction unit 1613, the second voltage reduction unit 1614 in sequence, and then connected to the main control unit 1601. The energy storage device 200 and the auxiliary power terminal 1530 can output electric energy with a voltage of 58V, the first voltage reduction unit 1613 is configured to reduce the voltage from 58V to 12V, and the second voltage reduction unit 1614 is configured to reduce the voltage from 12V to 3.3V. The 3.3V can be the power supply voltage of the main control unit 1601.

[0547] In one embodiment, the charging device 100 needs to be started. A hardware switch (not shown in the figure) can be provided on the charging device 100. For example, the hardware switch can be located on the first side surface 113. The hardware switch is connected to the panel switch unit 1720. When the hardware switch is triggered in a first preset manner (for example, the hardware switch is pressed and lasts for one second), the panel switch unit 1720 receives a corresponding signal change and takes the signal change as a start signal. Then, the panel switch unit 1720 sends the start signal to the first switch unit 1612, and the first switch unit 1612 is turned on based on the start signal. After the first switch unit 1612 is turned on, the electric energy of the energy storage device 200 and the auxiliary power terminal 1530 can be supplied to the main control unit 1601 via the anti-backflow unit 1611, the first switch unit 1612, the first voltage reduction unit 1613, and the second voltage reduction unit 1614.

[0548] After the main control unit 1601 is powered on, the self-locking signal can be sent to the first switch unit 1612 to make the first switch unit 1612 work continuously.

[0549] Then, when the hardware switch is triggered in a second preset manner (for example, the hardware switch is pressed and lasts for three seconds), the panel switch unit 1720 receives a corresponding signal change and takes the signal change as a shutdown signal. The panel switch unit 1720 sends the shutdown signal to the main control unit 1601, and the main control unit 1601 is powered off, and the first switch unit 1612 is turned off.

[0550] In one embodiment, referring to FIG. 24B, the energy storage device 200 needs to be powered by the mains. At this time, the mains is connected to the AC input interface 1520, and the AC input interface 1520 is converted into DC by the power conversion module 150 and output from the second DC output interface 1510. The second DC output interface 1510 is electrically connected to the power unit 1606, and the electric energy flows to the energy storage device 200 via the power unit 1606.

[0551] In one embodiment, referring to FIG. 24C, power supply to the multi-functional vehicle via the utility power is required. The multi-functional vehicle is connected to the vehicle charging output 143. At this time, the utility power is connected to the AC input interface 1520, and converted into DC power by the power conversion module 150, and output from the second DC output interface 1510. The second DC output interface 1510 is electrically connected to the power unit 1606, and flows to the vehicle charging output 143 via the power unit 1606.

[0552] In one embodiment, referring to FIG. 24D, power supply to the external AC load via the utility power is required. The external AC load is connected to the first AC output 142. At this time, the utility power is connected to the AC input interface 1520, and converted into AC power with a voltage consistent with that of the external AC load by the power conversion module 150. Then, the external AC load is supplied with power via the first AC output 142.

[0553] In one embodiment, the display screen 192 needs to be lighted, and at this time, the display screen 192 can be supplied with power by the energy storage device 200 or the auxiliary power supply 1530. Specifically, the energy storage device 200 and the auxiliary power supply 1530 can be connected to the input of the anti-backflow unit 1611, and the output of the anti-backflow unit 1611 is connected to the first switch unit 1612, the first voltage reduction unit 1613, the second switch unit 1615, and the panel control unit 1710 in sequence, so that the display screen 192 is lighted by supplying power to the panel control unit 1710.

[0554] Secondly, the above-mentioned circuit board can have multiple communication lines. Specifically, the main control unit 1601 is in communication connection with the battery pack communication unit 1602, the voltage sampling unit 1603, the current sampling unit 1604, the isolation unit 1608, the vehicle charging communication unit 1609, the pre-charging unit 1610, the first switch unit 1612, the second switch unit 1615, the fan unit 1616, the panel communication unit 1617, the inverter communication unit 1618, the clock unit 1619, the remote control unit 1620, the cover opening monitoring unit 1621, and the log unit 1622.

[0555] The power conversion control unit 1591 is in communication connection with the inverter communication unit 1618. The panel control unit 1710 is in communication connection with the display screen control unit 1730, the light strip control unit 1740, the first DC output 141, and the first AC output 142.

[0556] In one embodiment, the charging device 100 needs to stop the charging and discharging of the energy storage device 200 when accessing the multi-functional vehicle 500. The master control unit 1601 sends a polling message to the vehicle charging communication unit 1609 to detect whether the vehicle charging communication unit 1609 is connected to the multi-functional vehicle 500. When the master control unit 1601 receives the handshake information from the multi-functional vehicle 500, the master control unit 1601 disconnects the drive unit 1607 from the corresponding circuit of the energy storage device 200 by disconnecting the isolation unit 1608 from the corresponding circuit of the energy storage device 200, so that the energy storage device 200 stops charging and discharging, and avoids abnormal conditions of the energy storage device 200.

[0557] In one embodiment, the charging device 100 needs to display the estimated discharge duration of the energy storage device 200 on the display screen 192. At this time, the master control unit 1601 can obtain the current remaining capacity (Ah) of the energy storage device 200 from the battery pack communication unit 1602, and then obtain the current current value (I) from the current sampling unit 1604. The master control unit 1601 can obtain the estimated discharge duration by dividing the remaining capacity by the current current value. Then, the master control unit 1601 sends the estimated discharge duration to the display screen control unit 1730 via the panel communication unit 1617, and the display screen control unit 1730 controls the display screen 192 to display the estimated discharge duration.

[0558] Again, the power line and the communication line can be combined to realize other functions of the charging device 100.

[0559] In one embodiment, as shown in FIG. 24C, it is needed to supply power to the multi-functional vehicle 500 through the mains, and the multi-functional vehicle 500 is connected to the vehicle charging output end 143, and the vehicle charging output end 143 is connected to the power unit 1606. At this time, the mains is connected to the AC input interface 1520, and the AC input interface 1520 is converted into DC power by the power conversion module 150, and the DC power is output from the second DC output interface 1510, and the second DC output interface 1510 is electrically connected to the power unit 1606. At the same time, after the master control unit 1601 receives the handshake information from the multi-functional vehicle 500, the master control unit 1601 applies a voltage to the corresponding circuit of the isolation unit 1608 and the multi-functional vehicle 500 to make the corresponding circuit of the isolation unit 1608 and the multi-functional vehicle 500 conductive. The isolation unit 1608 is in communication connection with the drive unit 1607, and then the drive unit 1607 is in communication connection with the corresponding circuit of the multi-functional vehicle 500, and then the power unit 1606 is in communication connection with the corresponding circuit of the multi-functional vehicle 500, so that the DC power at the second DC output interface 1510 flows to the multi-functional vehicle 500 through the power unit 1606 and the vehicle charging output end 143.

[0560] Similarly, in one embodiment, referring to FIG. 24B, the power supply 200 needs to be supplied by the mains, and the power supply 200 is connected to the power unit 1606. At this time, the mains is connected to the AC input interface 1520, and the AC power is converted into DC power by the power conversion module 150, and output from the second DC output interface 1510, which is electrically connected to the power unit 1606. At the same time, after the main control unit 1601 receives the information from the battery pack communication unit 1602, it applies a voltage to the corresponding circuit of the isolation unit 1608 corresponding to the power supply 200, so that the corresponding circuit of the isolation unit 1608 corresponding to the power supply 200 is turned on. The isolation unit 1608 is in communication with the driving unit 1607, which in turn makes the driving unit 1607 corresponding to the power supply 200 conductive, so that the power unit 1606 and the power supply 200 are conductive, so that the DC power at the second DC output interface 1510 flows to the power supply 200 through the power unit 1606.

[0561] In one embodiment, as shown in FIG. 19, a switch A is formed between the AC input end 131 and the first AC output end 142, and the control end of the switch A can be connected to the main control unit 1601 through the power conversion control unit 1591 and the inverter communication unit 1618. When the AC input end 131 is connected to the mains socket 400, the power conversion control unit 1591 sends this information to the main control unit 1601 through the inverter communication unit 1618. When an external AC load (e.g., an electric fan) is connected to the first AC output end 142, the panel control unit 1710 can send this information to the main control unit 1601. At this time, the main control unit 1601 can turn on the switch A to transmit the mains from the second AC output interface 1540 to the first AC output end 142 to supply power to the external AC load.

[0562] Further, referring to FIG. 24E, when an external DC load (e.g., a smartphone) is connected to the USB port in the first DC output end 141, and an external AC load (e.g., an electric fan) is connected to the first AC output end 142, the panel control unit 1710 can send this information to the main control unit 1601. At this time, the main control unit 1601 can turn off the switch A, on the one hand, so that the mains is converted into DC power by the power conversion module 150, and output from the second DC output interface 1510, and then output from the USB port. On the other hand, the mains is transmitted from the second AC output interface 1540 to the first AC output end 142 after being converted by the power conversion module 150, to supply power to the external AC load. In this way, DC and AC can be output at the same time.

[0563] Similarly, when the energy storage device 200 is insufficient, the mains can also be converted into DC power by the power conversion module 150, output from the second DC output interface 1510, and flow to the energy storage device 200 from the power unit 1606. In this way, "edge charging" can be achieved.

[0564] Specifically, in one embodiment, the main control unit 1601 can be a single-chip microcomputer U19. The main control unit 1601 can have multiple pins that can be connected to other units on the control circuit board 1600, which will not be described one by one. In addition, the main control unit 1601 can be matched with a crystal oscillator and a burning unit.

[0565] In one embodiment, the voltage sampling unit 1603 sends the collected voltage value to the main control unit 1601. It can be understood that when the energy storage device 200 is multiple small packages, the charging device can have multiple voltage sampling units 1603.

[0566] In one embodiment, the current sampling unit 1604 is correspondingly arranged with the current sampling circuit 1605. The current sampling unit 1604 is connected between the current sampling circuit 1605 and the main control unit 1601, and is configured to send the collected current value to the main control unit 1601. The current sampling unit 1604 can include a current sampling chip (when the energy storage device 200 is two small packages, the current sampling chip can include two respectively). As an example, the current sampling circuit 1605 can include a sampling resistor. One end of the sampling resistor can be connected to the negative electrode of the energy storage device 200, and the other end can be connected to the current sampling chip of the current sampling unit 1604. That is, the current sampling unit 1604 and the current sampling circuit 1605 are both arranged on the negative electrode side of the energy storage device 200, to avoid damage caused by large current.

[0567] Further, the current sampling circuit 1605 in the present embodiment can also distinguish the charging and discharging state. As an example, under normal circumstances, the charging current and the discharging current flowing through the sampling resistor are different, which causes the voltage of the sampling resistor to be different. Therefore, the charging and discharging state of the energy storage device 200 can be determined according to the voltage value of the sampling resistor.

[0568] It can be understood that when the voltage value collected by the voltage sampling unit 1603 or the current value collected by the current sampling unit 1604 is abnormal (for example, the energy storage device 200 is short-circuited or short-circuited), the main control unit 1601 can issue an alarm. As an example, the alarm includes but is not limited to sound, light and electricity. Specifically, the main control unit 1601 can be in communication connection with the display screen 192, so as to display relevant content on the display screen 192. Alternatively, the main control unit 1601 can be connected with the application program (APP) of the mobile terminal 700 through the remote control unit 1620, so as to display relevant content on the mobile terminal 700.

[0569] In one embodiment, the power unit 1606, the driving unit 1607, the isolation unit 1608 and the master control unit 1601 are connected in sequence. The power unit 1606 is configured to control the external power supply 300 to charge the energy storage device 200 and / or supply power to the external load connected to the first DC output end 141 based on the signal sent by the master control unit 1601.

[0570] The driving unit 1607 is configured to drive the power unit 1606. The isolation unit 1608 is configured to be optoelectronic isolation. The input end of the isolation unit 1608 is connected to the energy storage device 200 (or the first voltage reduction unit 1613) and the auxiliary power supply end 1530. The output end of the isolation unit 1608 is provided with a light emitting device (for example, an LED), and the control end of the isolation unit 1608 is connected to the master control unit 1601. The input end of the driving unit 1607 is provided with an optoelectronic conversion device (for example, a photosensitive device) corresponding to the light emitting device, and the output end of the driving unit 1607 is communicatively connected to the power unit 1606.

[0571] Specifically, one end of the power unit 1606 is connected to the power input part 130 (the second DC output interface 1510), and the other end is respectively connected to the energy storage device 200 and the first DC output end 141 (including the car charging output end 143, the USB end and the cigar lighter). When power needs to be supplied to the energy storage device 200 and the first DC output end 141, the master control unit 1601 can turn on the isolation unit 1608, start the driving unit 1607, and then turn on the power unit 1606. When power does not need to be supplied to the energy storage device 200 and the first DC output end 141, the master control unit 1601 can disconnect the isolation unit 1608, disconnect the driving unit 1607, and then disconnect the power unit 1606.

[0572] Specifically, when the energy storage device 200 is two small packs, the power unit 1606, the driving unit 1607 and the isolation unit 1608 can respectively include four circuits. The first circuit is configured to control one small pack in the energy storage device 200. The second circuit is configured to control the USB and the cigar lighter in the first DC output end 141. The third circuit is configured to control the other small pack in the energy storage device 200. The fourth circuit is configured to control the car charging output interface 143. The following is described by taking charging the energy storage device 200 as an example. It can be understood that the devices and connection modes in the four circuits can be consistent.

[0573] Further, the power unit 1606 can include a first switch circuit, a second switch circuit, a third switch circuit and a fourth switch circuit. The first switch circuit is configured as a switch of one small pack in the energy storage device 200. The second switch circuit is configured as a switch of the USB and the cigar lighter in the first DC output end 141. The third switch circuit is configured as a switch of the other small pack in the energy storage device 200. The fourth switch circuit is configured as a switch of the car charging output interface 143.

[0574] The four switch circuit control principles are similar. The following takes the first switch circuit as an example to illustrate its working principle. The control end of the first switch circuit can be G1. When it is needed to supply power to the energy storage device 200, the main control unit 1601 can turn on the first switch circuit. Similarly, when it is not needed to supply power to the energy storage device 200, the main control unit 1601 can turn off the first switch circuit. Thus, the opening and closing control of the energy storage device 200 is realized.

[0575] In a possible case, the first switch circuit is connected to the positive electrode of the energy storage device 200. The first switch circuit is arranged at the positive electrode, so as to quickly disconnect the circuit and improve the response efficiency of the power unit 1606. Specifically, the first switch circuit includes a plurality of first field effect tubes arranged in parallel, which share the current, so as to avoid damage to the field effect tube by large current. For example, the first switch circuit includes three first field effect tubes arranged in parallel.

[0576] Of course, the first switch circuit can be connected to the negative electrode of the energy storage device 200.

[0577] In an embodiment, the vehicle charging communication unit 1609 is configured to detect the connection of the multi-functional vehicle 500. One end of the vehicle charging communication unit 1609 is in communication connection with the main control unit 1601, and the other end is in communication connection with the vehicle charging output end 143.

[0578] Further, when the connection of the multi-functional vehicle 500 is detected, the vehicle charging communication unit 1609 sends the connection information to the main control unit 1601, and the main control unit 1601 turns off the first switch circuit based on the connection information to control the energy storage device 200 to stop charging and discharging, so as to protect the energy storage device 200.

[0579] Specifically, the vehicle charging communication unit 1609 includes a first detection circuit configured to detect whether the vehicle charging output end 143 is connected to the multi-functional vehicle 500. The first detection circuit includes a vehicle charging access point and a vehicle charging detection point. The vehicle charging access point is a probe related to the multi-functional vehicle 500 and having a preset voltage. The vehicle charging detection point is connected to the main control unit 1601, and the main control unit 1601 determines whether the vehicle charging output end 143 is connected to the multi-functional vehicle 500 according to the voltage of the vehicle charging detection point.

[0580] The first detection circuit can include a first charging detection power supply (for example, +12V) and three first, second and third vehicle charging resistors connected in series, the first vehicle charging resistor being connected to the first charging detection power supply, and the third vehicle charging resistor being grounded. As an example, the first vehicle charging resistor can have a resistance of 100KΩ, the second vehicle charging resistor can have a resistance of 100KΩ, and the third vehicle charging resistor can have a resistance of 27KΩ. The above data is only illustrative. The vehicle charging access point is located between the first and second vehicle charging resistors, and the vehicle charging detection point is located between the second and third vehicle charging resistors.

[0581] In addition, the first detection circuit includes a first vehicle charging diode, the anode of the first vehicle charging diode being connected to the first charging detection power supply, and the cathode of the first vehicle charging diode being connected to the first vehicle charging resistor. This can prevent reverse current flow.

[0582] Since the multifunctional vehicle 500 is provided with a probe having a preset voltage, when the vehicle charging output end 143 is connected to the multifunctional vehicle 500, the vehicle charging access point obtains the preset voltage, thereby causing the voltage of the vehicle charging detection point to change. The control unit 1601 can determine whether the vehicle charging output end 143 is connected to the multifunctional vehicle 500 based on the voltage change of the vehicle charging detection point.

[0583] Further, the vehicle charging communication unit 1609 includes a follower circuit. The follower circuit is connected between the vehicle charging detection point and the control unit 1601. The follower circuit is configured to increase the load capacity of the first detection circuit. Specifically, the follower circuit includes an operational amplifier, the positive input terminal of the operational amplifier being connected to the output terminal of the operational amplifier, the negative output terminal of the operational amplifier being connected to the vehicle charging detection point, and the output terminal of the operational amplifier being connected to the control unit. This can provide extremely high input impedance and extremely low output impedance.

[0584] Moreover, the follower circuit can further include a first communication protection circuit, the output terminal of the operational amplifier being connected to the control unit 1601 via the first communication protection circuit. The first communication protection circuit can include a communication protection power supply, a communication protection capacitor, a first communication protection diode and a second communication protection diode connected in series, the cathode of the first communication protection diode being connected to the communication protection capacitor, the anode of the first communication protection diode being connected to the cathode of the second communication protection diode, and the anode of the second communication protection diode being grounded. The communication protection power supply is configured to supply power to the operational amplifier, and the communication protection capacitor is configured to filter. The output terminal of the operational amplifier is connected to the control unit via the first and second communication protection diodes. The first and second communication protection diodes can constitute a bidirectional level clamping protection circuit to prevent overvoltage impact.

[0585] In one embodiment, the charging device 100 comprises a pre-charge unit 1610 configured to prevent transient current from damaging the vehicle charging output 143. The pre-charge unit 1610 can be connected between the anti-backflow unit 1611 and the vehicle charging output 143. As an example, the pre-charge unit 1610 can comprise a pre-charge resistor. The pre-charge resistor can be connected between the anti-backflow unit 1611 and the vehicle charging output 143, so that when the charging device 100 is powered on, the line between the anti-backflow unit 1611 and the vehicle charging output 143 has a small current, thereby avoiding damage to the vehicle charging output 143 by transient large current.

[0586] Further, the pre-charge unit 1610 can also comprise a pre-charge switch, and a control end of the pre-charge switch can be connected to the main control unit 1601. When the charging device 100 is powered on, the pre-charge switch is turned on, so that the line between the anti-backflow unit 1611 and the vehicle charging output 143 has a small current. It can be understood that when the multifunctional vehicle 500 needs to be charged, the power unit 1606 is turned on, and the current in the pre-charge unit 1610 can be ignored.

[0587] In one embodiment, a fan unit 1616 is provided in communication connection with the main control unit 1601. The fan unit 1616 is configured to control the fan 801 to work to cool the energy storage device 200. The first voltage reduction unit 1613 can be connected to the fan unit 1616, thereby providing a 12V working voltage for the fan. The main control unit 1601 is in communication connection with the fan unit 1616, thereby providing start and stop signals for the working of the fan unit 1616.

[0588] In one embodiment, a panel communication unit 1617 is provided in communication connection with the main control unit 1601, and is configured to be in communication connection with the panel control unit 1710. As an example, the panel communication unit 1617 can be in RS485 communication with the panel control unit 1710.

[0589] In one embodiment, an inverter communication unit 1618 is provided in communication connection with the main control unit 1601. The inverter communication unit 1618 is configured to be in communication connection with the power conversion control unit of the power conversion module 150. The power conversion module 150 is configured to convert the power supply voltage of the external power supply 300 received by the direct current input end 132 or the alternating current input end 131 into a power supply voltage output by the power supply output portion 140 and the energy storage device 200, under the control of the power conversion control unit. That is, AC-DC, DC-AC, DC-DC or AC-AC is performed inside the power conversion module 150, depending on the communication information between the main control unit 1601 and the power conversion control unit via the inverter communication unit 1618.

[0590] In an embodiment, the charging device 100 can further comprise a clock unit 1619 communicatively connected to the master control unit 1601. The clock unit 1619 is configured to provide continuous and accurate time (e.g., year, month, day, hour, minute, second) and date information.

[0591] As an example, the clock unit 1619 can comprise a clock chip. The master control unit 1601 can provide a 3.3V starting voltage to the clock chip. At the same time, a diode can be provided between the master control unit 1601 and the clock chip U23 to prevent current from flowing back to the master control unit 1601.

[0592] In an embodiment, the charging device 100 can further comprise a remote control unit 1620 communicatively connected to the master control unit 1601. The remote control unit 1620 can enable the charging device 100 to have remote communication control functions such as Bluetooth / Wifi, and realize remote control with the external device 700.

[0593] In an embodiment, the charging device 100 can further comprise an open cover monitoring unit 1621 communicatively connected to the master control unit 1601. The open cover monitoring unit 1621 is configured to send a signal to the master control unit 1601 indicating whether the cover 160 is closed. When it is detected that the cover 160 is opened, the master control unit 1601 reduces the charge and discharge current of the energy storage device 200.

[0594] Correspondingly, the charging device 100 can further comprise an open cover detection assembly corresponding to the open cover monitoring unit 1621. The open cover detection assembly can be located on the surface of the accommodating portion 111 provided with the opening and / or the cover 160, and is configured to detect whether the cover 160 is opened and connected to the open cover monitoring unit 1621.

[0595] As an example, the open cover detection assembly can be located only on the surface of the accommodating portion 111 provided with the opening. For example, the open cover detection assembly can be a pressure detector. When the cover 160 is opened, the gravity detector detects a decrease in pressure, indicating that the cover 160 is opened. In another example, the open cover detection assembly can also be provided in the accommodating portion 111. For example, the open cover detection assembly can monitor the center of gravity of the charging device 100. When the cover 160 is opened, the center of gravity of the charging device 100 will change accordingly, and the open cover detection assembly detects that the center of gravity has changed accordingly, indicating that the cover 160 is opened. The present specification does not limit the specific arrangement position and specific device of the open cover detection assembly.

[0596] Further, the cover 160 has a first side, the surface of the accommodating portion 111 provided with the opening has a first edge, the first side is hinged to the first edge, and the cover opening detection assembly is arranged on the first edge and / or the first side. At this time, the cover opening detection assembly is arranged on the first edge and / or the first side, thereby reducing the possibility that the cover 160 is loosened due to vibration and thus the charging and discharging current of the energy storage device 200 is reduced.

[0597] The following exemplary describes the working mode of the cover opening monitoring unit 1621 when the cover opening detection assembly is a Hall sensor and a magnet.

[0598] One of the Hall sensor and the magnet is arranged on the surface of the accommodating portion provided with the opening, and the other is arranged on the cover. For example, the Hall sensor can be located on the surface of the accommodating portion 111 provided with the opening, and the magnet can be arranged on the cover 160, thereby facilitating the communication connection of the Hall sensor and the control circuit board 1600. Specifically, the Hall sensor is arranged on the surface of the accommodating portion 111 provided with the opening, and the Hall sensor has a recessed hole. The magnet is arranged on the cover 160 and protrudes from the cover 160. In the case that the cover 160 is closed, the magnet is matched with the recessed hole, thereby accurately monitoring whether the cover 160 is opened.

[0599] The Hall sensor is connected with the cover opening detection unit 1621. In the case that the cover 160 is opened, the Hall sensor sends a first level (for example, a high level) to the main control unit 1601 through the cover opening detection unit 1621, and in the case that the cover 160 is closed, the Hall sensor sends a second level (for example, a low level) to the main control unit 1601 through the cover opening detection unit 1621.

[0600] Specifically, the cover opening detection unit 1621 includes a filter circuit. The filter circuit is connected between the Hall sensor and the main control unit 1601 and is configured to separate the signal related to the opening of the cover 160.

[0601] For example, the filter circuit includes a first cover opening resistor, a second cover opening resistor, a first cover opening capacitor, and a second cover opening capacitor. The first cover opening resistor and the second cover opening resistor are connected in parallel between the Hall sensor and the main control unit, the first cover opening capacitor is connected between the first cover opening resistor and the ground terminal, and the second cover opening capacitor is connected between the second cover opening resistor and the ground terminal. The first cover opening resistor and the first cover opening capacitor form an RC filter circuit. The second cover opening resistor and the second cover opening capacitor also form an RC filter circuit. By arranging the filter circuit, the possibility that the main control unit 1601 mistakenly reduces the charging and discharging current of the energy storage device 200 is reduced.

[0602] In one embodiment, the charging device 100 can further include a log unit 1622 in communication connection with the main control unit 1601. The log unit 1622 can include a log unit core, thereby recording the use log of the charging device 100.

[0603] In this embodiment, the log unit 1622 is provided to facilitate recording the usage status of the charging device 100, which is conducive to troubleshooting, etc.

[0604] In one embodiment, the charging device 100 can further include a fault warning unit connected to the master control unit 1601. The fault warning unit can include a comparator. Normally, the positive input terminal of the comparator is connected to the 12V power supply, the negative input terminal of the comparator is connected to the 5V power supply, the output terminal of the comparator is connected to a pin of the control unit 1601, and is at high level. When a fault occurs, when the power supply connected to the positive input terminal of the comparator is lower than 5V (or lower than 6.25V), the output terminal of the comparator U24 outputs low level, and the control unit 1601 starts the fault warning. For example, the fault warning can include audible, visual and electrical signals, etc.

[0605] In one embodiment, a light strip 191 can be provided on the panel (e.g., the first side 113) of the charging device 100, and the light strip 191 is configured to illuminate. The panel control unit 1710 is in communication connection with the light strip control unit 1740 of the light strip 191.

[0606] In one embodiment, referring to FIG. 25, the charging device 100 can realize simultaneous input of alternating current and direct current (solar cell). At this time, the power conversion module 150 can include an alternating current-direct current conversion unit (AC-DC), a direct current-direct current conversion unit (DC-DC), and a bus.

[0607] The alternating current input end 131 is connected to the bus via the alternating current-direct current conversion unit, the direct current input end 132 is connected to the bus via the direct current-direct current conversion unit, and the bus is connected to the second direct current output interface 1510 and the second alternating current output interface 1540, respectively. Specifically, the alternating current input end 131 inputs 110V alternating current, which is converted to 400V direct current via the alternating current-direct current conversion unit, and the direct current input end 132 inputs 12V direct current, which is converted to 400V direct current via the direct current-direct current conversion unit, thereby realizing simultaneous input of alternating current and direct current.

[0608] After that, DC-DC conversion or DC-AC conversion can be performed according to the needs of the external load.

[0609] The above-mentioned function of accessing solar cells can be realized by a photovoltaic inverter. Alternatively, the photovoltaic inverter can be integrated in the power conversion module 150, or can also be a separate component for non-fixed installation, which can be selected to access the charging device 100 in an optional accessory manner. Alternatively, the charging device 100 reserves an expansion interface for fixedly accessing the photovoltaic inverter. The input voltage of the photovoltaic inverter can be between 12V and 60V. The charging power of the photovoltaic inverter can reach 1500W. The maximum input current of the photovoltaic inverter is 25A. The photovoltaic inverter of the charging device 100 can intelligently identify DC charging such as vehicle charging, adapter or PV input, and control the corresponding charging mode

[0610] In one embodiment, the AC input end 131 is configured to input 120V-240V AC power, and the first AC output end 142 is configured to output 120V AC power.

[0611] In the power conversion module 150, the electronic devices can withstand 240V AC power, so they can be suitable for a voltage range of 120V-240V.

[0612] At the same time, the first AC output end 142 is configured to output 120V AC power, thereby meeting the requirements of safety specifications. Further, when the power conversion module 150 monitors the input of 240V AC power, it can reduce the 240V AC power to 120V AC power through AC-AC conversion.

[0613] In one embodiment, the switching time between the disconnection of the external AC power supply to the power supply of the energy storage device 200 needs to be limited to below a preset time length, so as to ensure that the switching process does not affect the power supply output of the power output part 140. In some embodiments, the switching time can be set to be below one of 25ms, 24ms, 23ms, 23ms, 22ms, 21ms, 20ms, 19ms, 18ms, 17ms, 16ms, 15ms, 14ms, 13ms, 12ms, 11ms, 10ms, 9ms, 8ms, 7ms, 6ms, 5ms, 4ms, 3ms, 2ms, 1ms.

[0614] For example, the charging device 100 can realize uninterrupted power supply within 20ms. Specifically, the AC input end 131 is provided with a power failure monitoring unit configured to monitor whether the AC input end 131 has a power failure. When the power failure monitoring unit finds a power failure within a preset time length, the power failure monitoring unit sends power failure information to the main control unit 1601, and the main control unit 1601 controls the energy storage device 200 to supply power to the power output part 140 based on the power failure information, and the preset time length is not greater than 20ms.

[0615] Specifically, the power-off monitoring unit includes a rectifier circuit and a monitoring circuit. The rectifier circuit is configured to convert alternating current into direct current, and the monitoring circuit is configured to monitor the voltage value of the direct current. For example, the monitoring circuit can include an electro-optical-electro conversion circuit.

[0616] The electro-optical-electro conversion circuit can include a light-emitting device and a photosensitive element arranged in pairs. When the alternating current input terminal 131 continuously inputs alternating current, the alternating current is continuously converted into direct current, and the light-emitting device in the electro-optical-electro conversion circuit continuously emits light. This allows the photosensitive element to be continuously turned on. When the alternating current input terminal 131 is powered off, the light-emitting device stops emitting light, and the photosensitive element has no current passing through. Therefore, in the case where the monitoring circuit detects that the voltage value of the direct current is zero (i.e., the photosensitive element has no current passing through), it is determined that a power-off situation occurs.

[0617] Further, it can also be provided that the power-off situation is only confirmed when the photosensitive element has no current for a preset time length, so as to avoid misjudgment. Specifically, the preset time length is the time length of one period of the alternating current input by the alternating current input terminal 131. For example, when the frequency of the alternating current is 50 Hz, the preset time length can be 20 ms. Alternatively, the preset time length is the time length of half a period of the alternating current input by the alternating current input terminal 131. For example, when the frequency of the alternating current is 50 Hz, the preset time length can be 10 ms.

[0618] The charging device 100 can have functions such as battery undervoltage protection, battery overvoltage protection, and the like. Specifically, the default protection value of the battery undervoltage protection is 40.0±0.5V. The default protection value of the battery overvoltage protection is 59.5±0.5V. The default protection value of the mains overvoltage protection is 264±3VAC. The default protection value of the mains undervoltage protection is 85±3VAC. The default protection value of the photovoltaic overvoltage protection is 150.0±1V. The photovoltaic reverse connection protection can prevent the charging device 100 from being damaged. The default protection value of the inverter output overvoltage protection is 138±3Vac, and the deadlock is not restored. The default protection value of the inverter output undervoltage protection is 96±3Vac, and the deadlock is not restored. The inverter overload protection is set to be greater than 105% overload protection, and the deadlock is not restored. The inverter short-circuit protection is set to be output short-circuit protection, and the deadlock is not restored. The no-load loss of the charging device 100 can be less than 40W. The operating temperature of the charging device 100 can be -20℃-40℃. The storage environment temperature can be -40℃-60℃.

[0619] In one embodiment, referring to FIG. 26, a charging system is provided. The charging system is adapted to the charging device 100 provided in the present specification. The following exemplary describes the connection line when the charging device 100 and the multi-functional vehicle 500 are connected. The charging device 100 and the multi-functional vehicle 500 are connected through a connection cable.

[0620] The connection cable is provided with a detection line. A first end of the detection line is connected to the multifunctional vehicle 500, and a second end of the detection line is connected to a first detection circuit of the charging device 100.

[0621] The first detection circuit of the charging device 100 is configured to detect whether the multifunctional vehicle 500, the connection cable, and the charging device 100 are connected. The first detection circuit includes a vehicle-charging access point (indicated by M in FIG. 26) and a vehicle-charging detection point (for example, indicated by N or DET2 in FIG. 26), and the vehicle-charging access point is configured to access the second end of the detection line.

[0622] The main control unit 1601 of the charging device 100 is connected to the vehicle-charging detection point and is configured to obtain the voltage of the vehicle-charging detection point. When the voltage of the vehicle-charging detection point is a target voltage value, it is determined that the multifunctional vehicle 500, the connection cable, and the charging device 100 are connected.

[0623] Specifically, the first detection circuit of the charging device 100 includes a first charging detection power supply (for example, +12V) and three first vehicle-charging resistors (for example, resistors R5, R6, and R7) connected in series. The first vehicle-charging resistor is connected to the first charging detection power supply, and the third vehicle-charging resistor is grounded. The vehicle-charging access point is located between the first vehicle-charging resistor and the second vehicle-charging resistor, and the vehicle-charging detection point is located between the second vehicle-charging resistor and the third vehicle-charging resistor. As an example, the first vehicle-charging resistor and the second vehicle-charging resistor can have the same resistance value of 100kΩ, and the third vehicle-charging resistor can have a smaller resistance value of 27kΩ.

[0624] In addition, the first detection circuit includes a first vehicle-charging diode (for example, D2). The anode of the first vehicle-charging diode is connected to the first charging detection power supply, and the cathode of the first vehicle-charging diode is connected to the first vehicle-charging resistor. The first vehicle-charging diode can control the flow direction of the current and prevent the current from flowing in the opposite direction.

[0625] Correspondingly, the multifunctional vehicle 500 includes a second detection circuit. The second detection circuit includes a second charging detection power supply (for example, +15V), and when the multifunctional vehicle 500, the detection line, and the charging device 100 are connected, the second charging detection power supply provides a voltage to the vehicle-charging access point via the first end of the detection line and the second end of the detection line. It can be understood that the voltage of the second charging detection power supply can be higher than the voltage of the first charging detection power supply, or the voltage of the second charging detection power supply can be lower than the voltage of the first charging detection power supply. That is, the voltage of the second charging detection power supply does not need to be consistent with the voltage of the first charging detection power supply.

[0626] Specifically, since the charging system is provided with the first charging detection power supply and the second charging detection power supply, the master control unit 1601 is configured to determine whether the multifunctional vehicle 500, the connecting cable and the charging device 100 are connected and whether the multifunctional vehicle 500 is powered on based on the voltage value obtained at the vehicle charging detection point.

[0627] The first voltage value obtained at the vehicle charging detection point indicates that the multifunctional vehicle 500, the connecting cable and the charging device 100 are connected and the multifunctional vehicle 500 is powered on. The second voltage value obtained at the vehicle charging detection point indicates that the multifunctional vehicle 500, the connecting cable and the charging device 100 are connected and the multifunctional vehicle 500 is powered off. The target voltage value includes the first voltage value and the second voltage value. The third voltage value obtained at the vehicle charging detection point indicates that the multifunctional vehicle 500, the connecting cable and the charging device 100 are not connected. For example, the first charging detection power supply provides a voltage of 12V, the second charging detection power supply provides a voltage of 15V, the first vehicle charging resistor (e.g., resistor R5) is 100kΩ, the second vehicle charging resistor (e.g., resistor R6) is 100kΩ, and the third vehicle charging resistor (e.g., resistor R7) is 27kΩ. When the vehicle charging detection point obtains 3.08V, it is confirmed that the multifunctional vehicle 500 is connected and the multifunctional vehicle 500 is powered on. When the vehicle charging detection point obtains 0.65V, it is confirmed that the multifunctional vehicle 500 is connected and the multifunctional vehicle 500 is not powered on. When the vehicle charging detection point obtains 1.36V, it is confirmed that the multifunctional vehicle 500 is not connected. The above data is only illustrative.

[0628] Further, the master control unit 1601 is configured to charge the multifunctional vehicle 500 when the first voltage is obtained at the vehicle charging detection point. The charging of the multifunctional vehicle 500 can use the aforementioned power line, which will not be described here.

[0629] In addition, the second detection circuit of the multifunctional vehicle 500 can include a second charging detection power supply (e.g., +15V), a second vehicle charging diode (e.g., D1), a fourth vehicle charging resistor (e.g., resistor R1), a first cable access point and a second cable access point (e.g., DET1). The second charging detection power supply is grounded via the second vehicle charging diode and the fourth vehicle charging resistor, the first cable access point is connected between the second vehicle charging diode and the fourth vehicle charging resistor, and the first cable access point and the second cable access point are disconnected. At this time, the second cable access point is at a low level.

[0630] Correspondingly, the first end of the detection line includes a short-circuited first connection end and a second connection end. When the detection line is connected to the multifunctional vehicle 500, the first connection end is connected to the first cable access point and the second connection end is connected to the second cable access point, thereby realizing the electrical connection between the first cable access point and the second cable access point. At this time, the second cable access point is at a high level.

[0631] The second cable access point is connected to the battery management system of the multifunctional vehicle 500, and when the battery management system detects that the level of the second cable access point changes from low to high, it is determined that the detection line is connected to the multifunctional vehicle 500.

[0632] Moreover, the second detection circuit includes a voltage dividing circuit connected between the second cable access point and the second connection end, configured to protect the battery management system. Specifically, the voltage dividing circuit can include resistors R2, R3, and R4, the resistors R3 and R4 are connected in series and grounded, one end of the resistor R2 is connected between the resistors R3 and R4, and the other end is connected to the second cable access point.

[0633] In one possible example, the detection line includes a switch connected between the first connection end and the second connection end, and when the switch is turned on, the first connection end and the second connection end are shorted. The switch can prevent the first connection end and the second connection end from being shorted.

[0634] The switch can be provided with a corresponding hardware switch on the charging gun head. When it is necessary to connect the charging gun head to the multifunctional vehicle 500, the user needs to press the hardware switch to realize the connection. At the same time, when the user presses the hardware switch, the switch connected between the first connection end and the second connection end is turned on.

[0635] In another possible example, the detection circuit of the charging device 100 includes a third charging detection power supply (for example, +3.3V), a third cable access point (for example, DET3) and a fourth cable access point, the third cable access point is connected to the main control unit 1601 and the third charging detection power supply respectively, the fourth cable access point is grounded, and the third cable access point and the fourth cable access point are disconnected.

[0636] The second end of the detection line includes a shorted third connection end and a fourth connection end, the third connection end is matched with the third cable access point, and the fourth connection end is matched with the fourth cable access point. When the connection cable is connected to the charging device 100, the third connection end and the fourth connection end are shorted to ground the third charging detection power supply.

[0637] The main control unit 1601 is configured to obtain the voltage of the third cable access point, and in the case that the voltage of the third cable access point is zero (i.e., the third connection end and the fourth connection end are shorted to ground the third charging detection power supply), it is determined that the charging device 100 is connected to the connection cable. In addition, the detection circuit of the charging device 100 includes a fifth vehicle charging resistor (for example, resistor R8) connected between the third charging detection power supply and the third cable access point. The fifth vehicle charging resistor is configured to prevent the third cable access point from having a momentary excessive current.

[0638] In one embodiment, the detection lines include communication lines configured to transmit RS485 protocol information. It can be understood that the communication lines can also support CAN-H, CAN-L, 0V, S1, P1, C1, O1, 5V, and the like protocols. The communication lines can include two lines, which are divided into A_IN and B_IN.

[0639] The detection lines include charging lines via which the charging device 100 charges the multifunctional vehicle 500. The charging lines can include two lines, which are divided into B+ and B-.

[0640] It can be understood that, referring to FIG. 27, the multifunctional vehicle 500 in the present specification can include a garden working vehicle, a riding mower, and the like.

[0641] As an example, the multifunctional vehicle 500 includes a vehicle frame 13, a working system 15 connected to the vehicle frame 13, a power supply system 18 for supplying power to the working system 15, a charging interface 20, and a battery management system (BMS).

[0642] The vehicle frame 13 extends at least partially in a front-rear direction, and a carrying assembly 14 can be arranged on the vehicle frame 13. The carrying assembly 14 can include at least one of a seat or a standing platform, and the carrying assembly 14 is only exemplarily shown as including the seat. The seat or the standing platform is used for a worker to sit or stand. That is, the multifunctional vehicle can provide a riding working mode or a standing working mode. Further, the structures of the seat and the standing platform can be flexibly switched, that is, the working mode of the multifunctional vehicle can be flexibly switched between the riding working mode and the standing working mode according to the actual needs of a working user. A handheld operation assembly can also be arranged on the vehicle frame 13, and based on the handheld operation assembly, the multifunctional vehicle can also provide a hand-push working mode.

[0643] The working system 15 includes a power output assembly 16 and a walking driving assembly 17. The power output assembly 16 includes an output element for outputting power to realize a specific function. In some optional embodiments, the power output assembly 16 is a mowing element for realizing a mowing function. The power output assembly 16 is also connected to the vehicle frame 13. The power output assembly 16 further includes a first driving motor for driving the mowing element to rotate at a high speed, and a control circuit corresponding to the first driving motor.

[0644] The power output assembly 16 can include one or more mowing elements, and the number of the first driving motors can correspond to the number of the mowing elements. For example, in some embodiments, the mowing elements are blades, and the number of the first driving motors is also one. In some specific embodiments, the control circuit of the first driving motor includes a control chip, such as an MCU or an ARM. In some alternative embodiments, the power output assembly 16 is a cleaning element for realizing cleaning energy supply. The power output assembly 16 further includes a first driving motor for driving the cleaning element, and a control circuit corresponding to the first driving motor. It can be understood that, in some alternative embodiments, the power output assembly 16 can also be replaced by other functional components, such as snow sweeping, snow blowing, snow shoveling, and flushing components. Those skilled in the art can adapt various functional components without creative labor, and all of the above should be included in the protection scope of the embodiments.

[0645] The walking driving assembly 17 is used for enabling the multifunctional vehicle to travel in a garden scene, such as a lawn, a garden, or a fence. The walking driving assembly 17 at least includes a walking wheel element and a second driving motor for driving the walking wheel element. The walking wheel element can be provided in a plurality, and the number of the second driving motors corresponds to the number of the walking wheel elements. In some alternative embodiments, the walking driving assembly 17 includes a first walking wheel and a second walking wheel, and two second driving motors corresponding to the first walking wheel and the second walking wheel. When the two second driving motors drive the corresponding walking wheels to rotate at different powers, a speed difference is generated between the first walking wheel and the second walking wheel, so that the multifunctional vehicle can be turned. In some embodiments, the walking driving assembly 17 further includes a travel controller for controlling the second driving motor.

[0646] The working system 15 is a load in the multifunctional vehicle, and the power supply system 18 is used for supplying power to the load. Specifically, the power supply system 18 is used for at least supplying power to the first driving motor in the power output assembly 16 and the second driving motor in the walking driving assembly 17. The power supply system 18 can also supply power to other electronic components in the multifunctional vehicle, such as the control circuit corresponding to the first driving motor in the power output assembly 16 and the travel controller corresponding to the second driving motor in the walking driving assembly 17.

[0647] Referring to FIG. 27, the power supply system 18 is arranged on the vehicle frame 13 and detachably connected to the vehicle frame 13. The power supply system 18 is provided with a charging interface 20. As an example, the charging interface 20 is located on the side of the power supply system 18 away from the bearing assembly 14.

[0648] The power supply system 18 includes a plurality of detachable battery units 19, which can be conveniently detached and installed without the aid of tools. Those skilled in the art can understand that the plurality of battery units 19 can also be arranged in the power supply system 18 in a fixed package manner.

[0649] The plurality of battery units 19 can be selected from at least one of a first specification battery pack and a second specification battery pack. The first specification battery pack and the second specification battery pack can differ in specification, including but not limited to battery pack capacity, voltage, internal resistance, weight, size, energy density, type of battery cell, state of charge information, state of health information, and the like.

[0650] In some optional embodiments, the first specification battery pack and the second specification battery pack differ in battery pack capacity. The first specification battery pack has a larger capacity than the second specification battery pack. The first specification battery pack can be used to power large power tools, such as large electric chain saws, large electric angle grinders, hand-push lawn mowers, intelligent lawn mowers, hand-push snow blowers, self-propelled snow blowers, high-power electric hammers, high-power electric picks, high-power electric circular saws, high-power concrete cutters, electric bicycles, electric motorcycles, high-power air compressors, high-power washing machines, and the like. The first specification battery pack can also be used as an energy storage device to power other electrical equipment or to charge other battery packs. The second specification battery pack is configured to power handheld garden tools. For example, the second specification battery pack can be used to power garden tools such as grass trimmers, branch trimmers, blowers, chain saws, and the like. In addition, the second specification battery pack can also be used to power torque output tools such as electric drills, electric hammers, and the like; sawing tools such as electric circular saws, jigsaws, and the like; or grinding tools such as angle grinders, sanders, and the like.

[0651] In some optional embodiments, the first specification battery pack and the second specification battery pack differ in the type of battery cell selected. For example, the first specification battery pack and the second specification battery pack can be selected from lithium iron phosphate battery cells and ternary lithium battery cells, respectively. The plurality of battery units 19 of the power supply assembly can also be selected from nickel-chromium battery cells, lead-acid battery cells, graphene battery cells, and the like.

[0652] The plurality of battery units 19 of the power supply assembly are selected from at least one of a first specification battery pack and a second specification battery pack. This allows the multifunctional vehicle to be compatible with different specifications of battery packs, meeting the demand for high-power work while also being able to adapt to handheld electric garden tools, making the work of garden workers more flexible.

[0653] The structure of the garden work vehicle and the riding lawn mower can refer to the description of the multifunctional vehicle above, and will not be described in detail here.

[0654] The above embodiments are only illustrative of the principles of the present disclosure and its effects, and are not intended to limit the present disclosure. Any modification or change made by any person skilled in the art without departing from the spirit and scope of the present disclosure shall be covered by the protection scope of the present disclosure.

Claims

1. [Amended according to Rule 91 on 30.10.2025] A charging device, characterized in that, The charging device comprises a power unit in communication connection with the main control unit, configured to control the external power supply to charge the energy storage device based on the signal sent by the main control unit, and / or supply power to the external load connected to the first DC output end; One end of the power unit is connected to the power input part, and the other end is connected to the energy storage device and the first DC output end. The power unit comprises a plurality of switch circuits, control ends of the plurality of switch circuits being connected to the main control unit, configured to control the external power supply to supply power to the energy storage device and control the energy storage device or the external power supply to convert power to the power output part by switching of the plurality of switch circuits under the control of the main control unit. The plurality of switch circuits are connected between the power input part and the positive electrode of the energy storage device, and between the power input part and the positive electrode of the first DC output end. The plurality of switch circuits comprise a plurality of field effect tubes arranged in parallel, gate electrodes of the field effect tubes being connected to the main control unit. The charging device comprises a vehicle charging communication unit, one end of the vehicle charging communication unit being in communication connection with the main control unit, and the other end being in communication connection with the vehicle charging output end; 2. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 1, characterized in that, The vehicle charging communication unit is configured to detect the connection condition of the multi-functional vehicle, and send connection information to the main control unit when the multi-functional vehicle is detected to be connected; The main control unit is configured to control the energy storage device to stop charging and discharging based on the connection information.

3. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 2, characterized in that, The charging device comprises a current sampling circuit; 4. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 3, characterized in that, The current sampling circuit is connected between the negative electrode of the energy storage device and the negative electrode of the vehicle charging output end, and is configured to collect the current value flowing through the energy storage device and / or the vehicle charging output end; 5. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 3, characterized in that, The main control module further comprises a current sampling unit connected between the current sampling circuit and the main control unit, configured to send the collected current value to the main control unit.

6. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 3, characterized in that, The charging device comprises a battery pack communication unit and a voltage sampling unit; ​ ​ 7. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 1, characterized in that, ​ ​ ​ 8. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 1, characterized in that, ​ The battery pack communication unit and the voltage sampling unit are connected between the master control unit and the energy storage device, the battery pack communication unit is configured to establish a communication connection between the master control unit and the energy storage device, and the voltage sampling unit is configured to send the collected voltage value to the master control unit.

9. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 1, characterized in that, The charging device is provided with a hardware switch and a first switch unit, the hardware switch and the first switch unit are in communication connection, when the hardware switch is triggered in a first preset manner, the first switch unit is turned on; The hardware switch is in communication connection with the master control unit, when the hardware switch is triggered in a second preset manner, the master control unit controls the first switch unit to be turned off.

10. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 9, characterized in that, The power input part includes an auxiliary power supply; One end of the first switch unit is connected to the energy storage device and the auxiliary power supply, and the other end is connected to the master control unit, which is configured to supply power to the master control unit when the first switch unit is turned on, and send a self-locking signal to the first switch unit when the master control unit is powered on.

11. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 10, characterized in that, The charging device includes an anti-backflow unit, the anti-backflow unit includes a diode, the anode of the diode is connected to the negative electrode of the energy storage device, the negative electrode of the vehicle charging output end and the auxiliary power supply, and the cathode of the diode is connected to the first switch unit.

12. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 10, characterized in that, The charging device includes a pre-charging unit, the input end of the pre-charging unit is connected to the energy storage device and the auxiliary power supply, and the output end of the pre-charging unit is connected to the vehicle charging output end; The pre-charging unit includes a pre-charging resistor and a pre-charging switch connected in series, and the control end of the pre-charging switch is connected to the master control unit.

13. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 10, characterized in that, The charging device includes an isolation unit, a driving unit and a power unit; The power unit is configured to control the external power supply to charge the energy storage device based on the signal sent by the master control unit, and / or supply power to the external load connected to the first DC output end, one end of the power unit is connected to the power input part, and the other end is connected to the energy storage device and the first DC output end respectively; The driving unit is configured to drive the power unit; The isolation unit is configured to be optoelectronic isolation, the input end of the isolation unit is connected to the energy storage device and the auxiliary power supply, the output end of the isolation unit is provided with a light-emitting device, the control end of the isolation unit is connected to the master control unit, the input end of the driving unit is provided with a photoelectric conversion device corresponding to the light-emitting device, and the output end of the driving unit is in communication connection with the power unit.

14. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 9, characterized in that, A first voltage reduction unit and a second voltage reduction unit are connected in series between the first switch unit and the master control unit; The charging device further includes: A panel integrated with the first DC output end and the first AC output end, a panel control unit is arranged in the panel, and the panel control unit is in communication connection with the first DC output end and the first AC output end; A second voltage reduction unit is configured to supply power to the panel control unit, a control end of the second voltage reduction unit is connected to the main control unit, an input end of the second voltage reduction unit is connected to the first voltage reduction unit, and an output end of the second voltage reduction unit is connected to the panel control unit.

15. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 14, characterized in that, The charging device further comprises: A fan unit is configured to control the operation of a fan to cool the energy storage device, the first voltage reduction unit is electrically connected to the fan unit, and the main control unit is communicatively connected to the fan unit.

16. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 1, characterized in that, The charging device comprises: A cover body is matched with the main body; The charging device comprises an open cover monitoring unit communicatively connected to the main control unit, the open cover monitoring unit is configured to send a signal to the main control unit indicating whether the cover body is closed, and in the case of detecting that the cover body is opened, the main control unit reduces the charge and discharge current of the energy storage device.

17. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 1, characterized in that, The charging device comprises: A panel is provided with a display screen, the display screen is configured to display parameters related to any one of the power input unit, the power output unit or the energy storage device, and the panel is provided with a panel control unit, the panel control unit is communicatively connected to a display screen control unit of the display screen and the main control unit. The display screen is configured to display at least an estimated discharge duration of the energy storage device, the display screen control unit is configured to obtain a remaining capacity and a discharge current of the energy storage device, calculate the estimated discharge duration based on the remaining capacity and the discharge current, and control the display screen to display the estimated discharge duration.

18. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 1, characterized in that, The charging device comprises: A panel is provided with a light strip, the light strip is configured to illuminate, and the panel is provided with a panel control unit, the panel control unit is communicatively connected to a light strip control unit of the light strip.

19. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 1, characterized in that, The charging device comprises an inverter communication unit communicatively connected to the main control unit, the power input unit comprises an electric energy conversion module, which is electrically connected to the energy storage device and the power output unit, the inverter communication unit is communicatively connected to an electric energy conversion control unit of the electric energy conversion module, and the electric energy conversion module is configured to, under the control of the electric energy conversion control unit, convert the power supply voltage of the external power supply received by the direct current input end or the alternating current input end into the power supply voltage output by the energy storage device and the power output unit.

20. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 19, characterized in that, The electric energy conversion module comprises the direct current input end, a second direct current output interface, the alternating current input end and a second alternating current output interface, the second direct current output interface is connected to the first direct current output end and the energy storage device, and the second alternating current output interface is connected to the first alternating current output end.

21. The charging device according to claim 19, characterized in that The electric energy conversion module further comprises an alternating current-direct current conversion unit, a direct current-direct current conversion unit and a bus, the alternating current input end is connected to the bus via the alternating current-direct current conversion unit, the direct current input end is connected to the bus via the direct current-direct current conversion unit, and the bus is connected to the second direct current output interface and the second alternating current output interface respectively.

22. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 19, characterized in that, The alternating current input end is configured to input 120V-240V alternating current, and the first alternating current output end is configured to output 120V alternating current.

23. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 19, characterized in that, The power conversion module comprises a power-off monitoring unit configured to monitor whether a power-off situation occurs at the AC input end; In a preset time length, when the power-off monitoring unit finds a power-off situation, the power-off monitoring unit sends power-off information to the main control unit, and the main control unit controls the energy storage device to supply power to the power output part based on the power-off information, and the preset time length is not greater than 20 ms.

24. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 1, characterized in that, The charging device comprises a log unit in communication connection with the main control unit and configured to record the use log of the charging device; And / or, the charging device comprises a clock unit in communication connection with the main control unit and configured to obtain the current time; And / or, the charging device comprises a remote control unit in communication connection with the main control unit and configured to be in communication connection with an external electronic device.

25. [Amended according to Rule 91 on 30.10.2025] A charging system, characterized in that, The charging system comprises a multifunctional vehicle, a connecting cable and a charging device; The charging device comprises a body forming a containing part; an energy storage device detachably accommodated into the containing part; a power input part provided on the surface of the body and configured to access an external power supply, the power input part being in electrical connection with the energy storage device, the power input part comprising a DC input end and an AC input end; a power output part provided on the surface of the body and configured to be connected to an external load, the power output part being in electrical connection with the power input part and the energy storage device, the power output part comprising a first DC output end and a first AC output end, the first DC output end comprising at least a vehicle charging output end; a main control unit configured to be connected to the energy storage device, the power input part and the power output part, configured to control the external power supply to supply power to the energy storage device, and configured to control the energy storage device or the external power supply to convert power supply to the power output part; one end of the connecting cable is matched with the vehicle charging output end, and the other end is matched with a charging seat of the multifunctional vehicle.

26. [Amended according to Rule 91 on 30.10.2025] A charging device, characterized in that, comprises a body forming a containing part, the containing part having an opening; a cover covering the opening of the containing part; an energy storage device detachably accommodated into the containing part from the opening; a power input part provided on the surface of the body and configured to access an external power supply, the power input part being in electrical connection with the energy storage device, the power input part comprising a DC input end and an AC input end; a power output part provided on the surface of the body and configured to be connected to an external load, the power output part being in electrical connection with the power input part and the energy storage device, the power output part comprising a first DC output end and a first AC output end, the first DC output end comprising at least a vehicle charging output end, the vehicle charging output end being configured to be connected to a multifunctional vehicle; a main control unit configured to be connected to the energy storage device, the power input part and the power output part, configured to control the external power supply to supply power to the energy storage device, and configured to control the energy storage device or the external power supply to convert power supply to the power output part; a cover opening monitoring unit in communication connection with the main control unit and configured to send a signal to the main control unit about whether the cover is opened, and in the case that the cover is opened, the main control unit reduces the charge and discharge current of the energy storage device; The opening detection assembly is connected with the opening monitoring unit and is arranged on the surface of the accommodating portion provided with the opening and / or the cover, and is configured to detect whether the cover is opened.

27. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 26, characterized in that, The cover has a first side, the surface of the accommodating portion provided with the opening has a first edge, the first side is hinged to the first edge, and the opening detection assembly is arranged on the first edge and / or the first side.

28. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 26, characterized in that, The opening detection assembly comprises a Hall sensor and a magnet, one of the Hall sensor and the magnet is arranged on the surface of the accommodating portion provided with the opening, and the other is arranged on the cover. The Hall sensor is connected with the opening monitoring unit, and the Hall sensor sends a first level to the main control unit via the opening monitoring unit when the cover is opened, and sends a second level to the main control unit via the opening monitoring unit when the cover is closed.

29. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 28, characterized in that, The opening monitoring unit comprises a filter circuit connected between the Hall sensor and the main control unit, and configured to separate a signal related to the opening of the cover.

30. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 28, characterized in that, The Hall sensor is arranged on the surface of the accommodating portion provided with the opening, and the Hall sensor has a recessed hole; The magnet is arranged on the cover and protrudes from the cover, and the magnet is matched with the recessed hole when the cover is closed.

31. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 26, characterized in that, The charging device comprises a power unit in communication connection with the main control unit; The power unit is configured to control the external power supply to charge the energy storage device and / or supply power to the external load connected to the first DC output end based on the signal sent by the main control unit; One end of the power unit is connected to the power input portion, and the other end is respectively connected to the energy storage device and the first DC output end.

32. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 31, characterized in that, The power unit comprises a plurality of switch circuits, and control ends of the plurality of switch circuits are connected to the main control unit; The main control unit controls the plurality of switch circuits to control the external power supply to supply power to the energy storage device, and controls the energy storage device or the external power supply to supply power to the power output portion.

33. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 31, characterized in that, The plurality of switch circuits are connected between the power input portion and the positive electrode of the energy storage device, and are connected between the power input portion and the positive electrode of the first DC output end.

34. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 31, characterized in that, The plurality of switch circuits comprise a plurality of field effect tubes arranged in parallel, and gates of the field effect tubes are connected to the main control unit.

35. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 31, characterized in that, The charging device comprises a vehicle charging communication unit, one end of the vehicle charging communication unit is in communication connection with the main control unit, and the other end is in communication connection with the vehicle charging output end; The vehicle charging communication unit is configured to detect the connection of the multi-functional vehicle, and sends connection information to the main control unit when detecting the connection of the multi-functional vehicle, and the main control unit controls the energy storage device to stop charging and discharging based on the connection information.

36. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 26, characterized in that, The charging device comprises a current sampling circuit connected between the negative electrode of the energy storage device and the negative electrode of the vehicle charging output end; The current sampling circuit is configured to collect the current value flowing through the energy storage device and / or the vehicle charging output end; The master module further comprises a current sampling unit connected between the current sampling circuit and the master unit; The current sampling unit is configured to send the collected current value to the master unit.

37. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 26, characterized in that, The charging device comprises a battery pack communication unit and a voltage sampling unit; The battery pack communication unit and the voltage sampling unit are respectively connected between the master unit and the energy storage device, the battery pack communication unit is configured to establish a communication connection between the master unit and the energy storage device, and the voltage sampling unit is configured to send the collected voltage value to the master unit.

38. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 26, characterized in that, The charging device is provided with a hardware switch and a first switch unit; The hardware switch and the first switch unit are in communication connection, and when the hardware switch is triggered in a first preset manner, the first switch unit is turned on; The hardware switch and the master unit are in communication connection, and when the hardware switch is triggered in a second preset manner, the master unit controls the first switch unit to be turned off.

39. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 38, characterized in that, The power input part comprises an auxiliary power supply; One end of the first switch unit is connected to the energy storage device and the auxiliary power supply, and the other end is connected to the master unit. The auxiliary power supply is configured to supply power to the master unit when the first switch unit is turned on, and when the master unit is powered on, the master unit sends a self-locking signal to the first switch unit.

40. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 39, characterized in that, The charging device comprises an anti-backflow unit; The anti-backflow unit comprises a diode, the anode of the diode is connected to the negative electrode of the energy storage device, the negative electrode of the vehicle charging output end and the auxiliary power supply, and the cathode of the diode is connected to the first switch unit.

41. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 39, characterized in that, The charging device comprises a pre-charging unit; The input end of the pre-charging unit is connected to the energy storage device and the auxiliary power supply, and the output end of the pre-charging unit is connected to the vehicle charging output end; The pre-charging unit comprises a pre-charging resistor and a pre-charging switch connected in series, and the control end of the pre-charging switch is connected to the master unit.

42. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 39, characterized in that, The charging device comprises an isolation unit, a driving unit and a power unit; The power unit is configured to control the external power supply to charge the energy storage device based on the signal sent by the master unit, and / or supply power to the external load connected to the first DC output end; One end of the power unit is connected to the power input part, and the other end is respectively connected to the energy storage device and the first DC output end; The driving unit is configured to drive the power unit; The isolation unit is configured to be optoelectronic isolation; The input end of the isolation unit is connected to the energy storage device and the auxiliary power supply, the output end of the isolation unit is provided with a light emitting device, the control end of the isolation unit is connected to the master unit, the input end of the driving unit is provided with a photoelectric conversion device corresponding to the light emitting device, and the output end of the driving unit is in communication connection with the power unit.

43. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 38, characterized in that, A first voltage reduction unit and a second voltage reduction unit are connected in series between the first switch unit and the master unit; The charging device further comprises: A panel integrated with the first DC output end and the first AC output end; The panel control unit is arranged in the panel and is in communication connection with the first DC output end and the first AC output end; The second voltage reduction unit is configured to supply power to the panel control unit; The control end of the second voltage reduction unit is connected to the main control unit, the input end of the second voltage reduction unit is connected to the first voltage reduction unit, and the output end of the second voltage reduction unit is connected to the panel control unit.

44. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 43, characterized in that, The charging device further comprises: The fan unit is configured to control the fan to work to cool the energy storage device; The first voltage reduction unit is electrically connected to the fan unit, and the main control unit is in communication connection with the fan unit.

45. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 26, characterized in that, The charging device comprises: The panel is provided with a display screen configured to display parameters related to any one of the power input unit, the power output unit or the energy storage device; The panel control unit is arranged in the panel and is in communication connection with the display screen control unit of the display screen and the main control unit; The display screen is configured to display at least an estimated discharge duration of the energy storage device, the display screen control unit is configured to obtain a remaining capacity and a discharge current of the energy storage device, calculate the estimated discharge duration based on the remaining capacity and the discharge current, and control the display screen to display the estimated discharge duration.

46. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 26, characterized in that, The charging device comprises: The panel is provided with a lamp strip configured to illuminate; The panel control unit is arranged in the panel and is in communication connection with the lamp strip control unit of the lamp strip.

47. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 26, characterized in that, The charging device comprises an inverter communication unit in communication connection with the main control unit; The power input unit comprises a power conversion module electrically connected to the energy storage device and the power output unit, and the inverter communication unit is in communication connection with a power conversion control unit of the power conversion module; The power conversion module is configured to, under the control of the power conversion control unit, convert a power supply voltage of an external power supply received by the DC input end or the AC input end into a supply voltage output by the energy storage device and the power output unit.

48. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 47, characterized in that, The power conversion module comprises the DC input end, a second DC output interface, the AC input end and a second AC output interface, the second DC output interface is connected to the first DC output end and the energy storage device, and the second AC output interface is connected to the first AC output end.

49. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 47, characterized in that, The power conversion module further comprises an AC-DC conversion unit, a DC-DC conversion unit and a bus, the AC input end is connected to the bus via the AC-DC conversion unit, the DC input end is connected to the bus via the DC-DC conversion unit, and the bus is connected to the second DC output interface and the second AC output interface respectively.

50. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 47, characterized in that, The AC input end is configured to input 120V-240V AC power, and the first AC output end is configured to output 120V AC power.

51. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 27, characterized in that, The power conversion module comprises a power failure monitoring unit configured to monitor whether a power failure occurs at the AC input end; The power-off monitoring unit sends power-off information to the master control unit when a power-off condition is found, and the master control unit is configured to respond to the power-off information within a preset time period, control the energy storage device to supply power to the power output part, and the preset time period is not greater than 20 ms.

52. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 26, characterized in that, The charging device comprises a log unit in communication with the master control unit, configured to record the use log of the charging device; And / or, the charging device comprises a clock unit in communication with the master control unit, configured to obtain the current time; And / or, the charging device comprises a remote control unit in communication with the master control unit, configured to be in communication with an external electronic device.

53. [Amended according to Rule 91 on 30.10.2025] A charging system, characterized in that, The charging system comprises a multifunctional vehicle, a connecting cable and a charging device; The charging device comprises a body forming a containing part; an energy storage device detachably accommodated in the containing part; a power input part provided on the surface of the body and configured to access an external power supply, the power input part being electrically connected to the energy storage device, the power input part comprising a direct current input end and an alternating current input end; a power output part provided on the surface of the body and configured to be connected to an external load, the power output part being electrically connected to the power input part and the energy storage device, the power output part comprising a first direct current output end and a first alternating current output end, the first direct current output end comprising at least a vehicle charging output end; a master control unit configured to be connected to the energy storage device, the power input part and the power output part, configured to control the external power supply to supply power to the energy storage device, and to control the energy storage device or the external power supply to supply power to the power output part; an open cover monitoring unit in communication with the master control unit, configured to send a signal to the master control unit indicating whether the cover is open, and in the case that the cover is open, the master control unit reduces the charge and discharge current of the energy storage device; an open cover detection assembly connected to the open cover monitoring unit, the open cover detection assembly being located on the surface of the containing part provided with an opening and / or the cover, configured to detect whether the cover is open; One end of the connecting cable is matched with the vehicle charging output end, and the other end is matched with the charging seat of the multifunctional vehicle.

54. [Amended according to Rule 91 on 30.10.2025] A charging device, characterized in that, Comprising: a body forming a containing part; an energy storage device detachably accommodated in the containing part; a power input part provided on the surface of the body and configured to access an external power supply, the power input part being electrically connected to the energy storage device, the power input part comprising a direct current input end and an alternating current input end; a power output part provided on the surface of the body and configured to be connected to an external load, the power output part being electrically connected to the power input part and the energy storage device, the power output part comprising a first direct current output end and a first alternating current output end, the first direct current output end comprising at least a vehicle charging output end, the vehicle charging output end being configured to be connected to a multifunctional vehicle; a master control unit configured to be connected to the energy storage device, the power input part and the power output part, configured to control the external power supply to supply power to the energy storage device, and to control the energy storage device or the external power supply to supply power to the power output part; The vehicle charging communication unit is connected between the vehicle charging output end and the master control unit, and is configured to send connection information to the master control unit when the vehicle charging output end is connected to the multifunctional vehicle, and the master control unit controls the energy storage device to stop charging and discharging based on the connection information.

55. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 54, characterized in that, The vehicle charging communication unit includes a first detection circuit configured to detect whether the vehicle charging output end is connected to the multifunctional vehicle. The first detection circuit includes a vehicle charging access point and a vehicle charging detection point, the vehicle charging access point is a probe related to the multifunctional vehicle and having a preset voltage, and the vehicle charging detection point is connected to the master control unit, and the master control unit determines whether the vehicle charging output end is connected to the multifunctional vehicle according to the voltage of the vehicle charging detection point.

56. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 55, characterized in that, The first detection circuit includes a first charging detection power supply and three first, second and third vehicle charging resistors connected in series, the first charging detection power supply is connected to the first vehicle charging resistor, and the third vehicle charging resistor is grounded. The vehicle charging access point is located between the first and second vehicle charging resistors, and the vehicle charging detection point is located between the second and third vehicle charging resistors.

57. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 56, characterized in that, The first detection circuit includes a first vehicle charging diode, the anode of the first vehicle charging diode is connected to the first charging detection power supply, and the cathode of the first vehicle charging diode is connected to the first vehicle charging resistor.

58. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 55, characterized in that, The vehicle charging communication unit includes a follow-up circuit connected between the vehicle charging detection point and the control unit, and the follow-up circuit is configured to increase the load capacity of the first detection circuit. The follow-up circuit includes an operational amplifier, the positive input end of the operational amplifier is connected to the output end of the operational amplifier, the negative output end of the operational amplifier is connected to the vehicle charging detection point, and the output end of the operational amplifier is connected to the control unit.

59. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 58, characterized in that, The follow-up circuit further includes a first communication protection circuit, and the output end of the operational amplifier is connected to the control unit via the first communication protection circuit. The first communication protection circuit includes a communication protection power supply, a communication protection capacitor, a first communication protection diode and a second communication protection diode connected in series, the cathode of the first communication protection diode is connected to the communication protection capacitor, the anode of the first communication protection diode is connected to the cathode of the second communication protection diode, and the anode of the second communication protection diode is grounded. The output end of the operational amplifier is connected to the control unit via the first and second communication protection diodes.

60. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 54, characterized in that, The charging device includes a power unit in communication with the master control unit; The power unit is configured to control the external power supply to charge the energy storage device based on the signal sent by the master control unit, and / or supply power to the external load connected to the first DC output end; One end of the power unit is connected to the power input part, and the other end is respectively connected to the energy storage device and the first DC output end.

61. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 60, characterized in that, The power unit includes a plurality of switch circuits, and the control ends of the plurality of switch circuits are connected to the master control unit. The master control unit controls the on-off of the plurality of switching circuits to control the external power supply to supply power to the energy storage device, and to control the energy storage device or the external power supply to convert power to the power output part.

62. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 61, characterized in that, The plurality of switching circuits are connected between the power input part and the positive electrode of the energy storage device, and between the power input part and the positive electrode of the first DC output end.

63. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 60, characterized in that, The plurality of switching circuits include a plurality of field effect tubes connected in parallel, and the gates of the field effect tubes are connected to the master control unit.

64. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 1, characterized in that, The charging device includes a current sampling circuit connected between the negative electrode of the energy storage device and the negative electrode of the vehicle charging output end. The current sampling circuit is configured to collect the current value flowing through the energy storage device and / or the vehicle charging output end. The master control module further includes a current sampling unit connected between the current sampling circuit and the master control unit. The current sampling unit is configured to send the collected current value to the master control unit.

65. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 54, characterized in that, The charging device includes a battery pack communication unit and a voltage sampling unit, and the battery pack communication unit and the voltage sampling unit are respectively connected between the master control unit and the energy storage device. The battery pack communication unit is configured to establish a communication connection between the master control unit and the energy storage device, and the voltage sampling unit is configured to send the collected voltage value to the master control unit.

66. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 54, characterized in that, The charging device is provided with a hardware switch and a first switch unit, and the hardware switch and the first switch unit are in communication connection. When the hardware switch is triggered in a first preset manner, the first switch unit is turned on. The hardware switch is in communication connection with the master control unit, and when the hardware switch is triggered in a second preset manner, the master control unit controls the first switch unit to be turned off.

67. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 66, characterized in that, The power input part includes an auxiliary power supply. One end of the first switch unit is connected to the energy storage device and the auxiliary power supply, and the other end is connected to the master control unit. The auxiliary power supply is configured to supply power to the master control unit when the first switch unit is turned on, and the master control unit sends a self-locking signal to the first switch unit when the master control unit is powered on.

68. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 67, characterized in that, The charging device includes an anti-backflow unit. The anti-backflow unit includes a diode, and the anode of the diode is connected to the negative electrode of the energy storage device, the negative electrode of the vehicle charging output end, and the auxiliary power supply. The cathode of the diode is connected to the first switch unit.

69. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 67, characterized in that, The charging device includes a pre-charging unit, and the input end of the pre-charging unit is connected to the energy storage device and the auxiliary power supply. The output end of the pre-charging unit is connected to the vehicle charging output end. The pre-charging unit includes a pre-charging resistor and a pre-charging switch connected in series, and the control end of the pre-charging switch is connected to the master control unit.

70. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 67, characterized in that, The charging device includes an isolation unit, a driving unit, and a power unit. The power unit is configured to control the external power supply to charge the energy storage device based on the signal sent by the master control unit, and / or to supply power to the external load connected to the first DC output end. The power unit has one end connected to the power input unit and the other end connected to the energy storage device and the first DC output unit respectively; The driving unit is configured to drive the power unit; The isolation unit is configured to photoelectric isolation; The input end of the isolation unit is connected to the energy storage device and the auxiliary power supply, the output end of the isolation unit is provided with a light emitting device, the control end of the isolation unit is connected to the main control unit, the input end of the driving unit is provided with a photoelectric conversion device corresponding to the light emitting device, and the output end of the driving unit is communicatively connected to the power unit.

71. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 66, characterized in that, The first switch unit and the main control unit are connected in series with the first voltage reduction unit and the second voltage reduction unit; The charging device further comprises: A panel integrated with the first DC output unit and the first AC output unit; A panel control unit is arranged in the panel, and the panel control unit is communicatively connected to the first DC output unit and the first AC output unit; The second voltage reduction unit is configured to supply power to the panel control unit; The control end of the second voltage reduction unit is connected to the main control unit, the input end of the second voltage reduction unit is connected to the first voltage reduction unit, and the output end of the second voltage reduction unit is connected to the panel control unit.

72. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 71, characterized in that, The charging device further comprises: A fan unit configured to control the fan to work to cool the energy storage device; The first voltage reduction unit is electrically connected to the fan unit, and the main control unit is communicatively connected to the fan unit.

73. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 54, characterized in that, The charging device comprises: A cover body matched with the main body; The charging device comprises an open cover monitoring unit communicatively connected to the main control unit, the open cover monitoring unit is configured to send a signal to the main control unit indicating whether the cover body is closed, and in the case of detecting that the cover body is opened, the main control unit reduces the charge and discharge current of the energy storage device.

74. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 1, characterized in that, The charging device comprises: A panel provided with a display screen, the display screen is configured to display parameters related to any one of the power input unit, the power output unit or the energy storage device; A panel control unit is arranged in the panel, and the panel control unit is communicatively connected to the display screen control unit of the display screen and the main control unit; The display screen is configured to display at least the estimated discharge duration of the energy storage device, the display screen control unit is configured to obtain the remaining capacity and discharge current of the energy storage device, calculate the estimated discharge duration based on the remaining capacity and the discharge current, and control the display screen to display the estimated discharge duration.

75. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 1, characterized in that, The charging device comprises: A panel provided with a light strip, the light strip is configured to illuminate, and a panel control unit is arranged in the panel, and the panel control unit is communicatively connected to a light strip control unit of the light strip.

76. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 1, characterized in that, The charging device comprises an inverter communication unit communicatively connected to the main control unit, the power input unit comprises an electric energy conversion module electrically connected to the energy storage device and the power output unit, and the inverter communication unit is communicatively connected to an electric energy conversion control unit of the electric energy conversion module; The power conversion module is configured to convert the power supply voltage of the external power supply received by the DC input end or the AC input end into the power supply voltage output by the power supply output part under the control of the power conversion control unit.

77. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 76, characterized in that, The power conversion module comprises the DC input end, a second DC output interface, the AC input end and a second AC output interface, the second DC output interface is connected to the first DC output end and the energy storage device, and the second AC output interface is connected to the first AC output end.

78. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 76, characterized in that, The power conversion module further comprises an AC-DC conversion unit, a DC-DC conversion unit and a bus, the AC input end is connected to the bus via the AC-DC conversion unit, the DC input end is connected to the bus via the DC-DC conversion unit, and the bus is connected to the second DC output interface and the second AC output interface respectively.

79. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 76, characterized in that, The AC input end is configured to input 120V-240V AC power, and the first AC output end is configured to output 120V AC power.

80. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 76, characterized in that, The power conversion module comprises a power failure monitoring unit configured to monitor whether a power failure occurs at the AC input end; When the power failure monitoring unit detects a power failure, the power failure information is sent to the main control unit, and the main control unit is configured to control the energy storage device to supply power to the power supply output part within a preset time period in response to the power failure information, and the preset time period is not greater than 20ms.

81. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 54, characterized in that, The charging device comprises a log unit in communication connection with the main control unit and configured to record the use log of the charging device. And / or, the charging device comprises a clock unit in communication connection with the main control unit and configured to obtain the current time. And / or, the charging device comprises a remote control unit in communication connection with the main control unit and configured to be in communication connection with an external electronic device.

82. [Amended according to Rule 91 on 30.10.2025] A charging system, characterized in that, The charging system comprises a multi-functional vehicle, a connecting cable and a charging device. The charging device comprises: a body forming a containing part; an energy storage device detachably accommodated in the containing part; a power input part provided on the surface of the body and configured to access an external power supply, the power input part being electrically connected to the energy storage device, the power input part comprising a DC input end and an AC input end; a power output part provided on the surface of the body and configured to be connected to an external load, the power output part being electrically connected to the power input part and the energy storage device, the power output part comprising a first DC output end and a first AC output end, the first DC output end comprising at least a vehicle charging output end configured to be connected to a multi-functional vehicle; a main control unit configured to be connected to the energy storage device, the power input part and the power output part, configured to control the external power supply to supply power to the energy storage device, and configured to control the energy storage device or the external power supply to supply power to the power output part; The vehicle charging communication unit is connected between the vehicle charging output end and the master control unit, and is configured to send connection information to the master control unit when the vehicle charging output end is connected to the multifunctional vehicle, and the master control unit controls the energy storage device to stop charging and discharging based on the connection information. One end of the connecting cable is matched with the vehicle charging output end, and the other end is matched with the charging seat of the multifunctional vehicle.

83. [Amended according to Rule 91 on 30.10.2025] A charging device, characterized in that, The body forms a containing part; The energy storage device is detachably accommodated in the containing part; The power input part is arranged on the surface of the body and is configured to access an external power supply, the power input part is electrically connected with the energy storage device, the power input part includes a direct current input end and an alternating current input end, the alternating current input end is provided with a power failure monitoring unit, and the power failure monitoring unit is configured to monitor whether the alternating current input end has a power failure; The power output part is arranged on the surface of the body and is configured to connect an external load, the power output part is electrically connected with the power input part and the energy storage device, the power output part includes a first direct current output end and a first alternating current output end, the first direct current output end at least includes a vehicle charging output end, and the vehicle charging output end is configured to be connected to a multifunctional vehicle; The master control unit is configured to be connected with the energy storage device, the power input part and the power output part, and is configured to control the external power supply to supply power to the energy storage device, and control the energy storage device or the external power supply to convert to supply power to the power output part; When the power failure monitoring unit finds a power failure, the power failure information is sent to the master control unit, and the master control unit is configured to control the energy storage device to supply power to the power output part within a preset time period in response to the power failure information, and the preset time period is not greater than 20 ms. The preset time period is the time period of one cycle of the alternating current input from the alternating current input end.

84. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 83, characterized in that, The preset time period is the time period of half a cycle of the alternating current input from the alternating current input end.

85. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 83, characterized in that, The power failure monitoring unit includes a rectifier circuit and a monitoring circuit, the rectifier circuit is configured to convert the alternating current into direct current, and the monitoring circuit is configured to monitor the voltage value of the direct current; 86. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 83, characterized in that, In the case that the monitoring circuit detects that the voltage value of the direct current is zero, it is determined that a power failure occurs. The charging device includes a power unit in communication connection with the master control unit; 87. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 83, characterized in that, The power unit is configured to control the external power supply to charge the energy storage device and / or supply power to the external load connected to the first direct current output end based on the signal sent by the master control unit, one end of the power unit is connected to the power input part, and the other end is connected to the energy storage device and the first direct current output end respectively. The power unit includes a plurality of switch circuits, and control ends of the plurality of switch circuits are connected to the master control unit.

88. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 87, characterized in that, The master control unit controls the external power supply to supply power to the energy storage device and controls the energy storage device or the external power supply to convert to supply power to the power output part by switching of the plurality of switch circuits. The plurality of switch circuits are connected between the power input part and the positive electrode of the energy storage device, and are connected between the power input part and the positive electrode of the first direct current output end.

89. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 88, characterized in that, ​ 90. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 88, characterized in that, The plurality of switch circuits comprise a plurality of field effect tubes arranged in parallel, and the gates of the field effect tubes are connected to the master control unit.

91. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 88, characterized in that, The charging device comprises a vehicle charging communication unit, one end of the vehicle charging communication unit being in communication connection with the master control unit, and the other end being in communication connection with the vehicle charging output end; The vehicle charging communication unit is configured to detect the connection of the multi-functional vehicle, and when detecting the connection of the multi-functional vehicle, the vehicle charging communication unit sends connection information to the master control unit, and the master control unit controls the energy storage device to stop charging and discharging based on the connection information.

92. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 83, characterized in that, The charging device comprises a current sampling circuit connected between the negative electrode of the energy storage device and the negative electrode of the vehicle charging output end. The current sampling circuit is configured to collect the current value flowing through the energy storage device and / or the vehicle charging output end. The master control module further comprises a current sampling unit connected between the current sampling circuit and the master control unit. The current sampling unit is configured to send the collected current value to the master control unit.

93. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 83, characterized in that, The charging device comprises a battery pack communication unit and a voltage sampling unit, and the battery pack communication unit and the voltage sampling unit are respectively connected between the master control unit and the energy storage device. The battery pack communication unit is configured to establish a communication connection between the master control unit and the energy storage device, and the voltage sampling unit is configured to send the collected voltage value to the master control unit.

94. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 83, characterized in that, The charging device is provided with a hardware switch and a first switch unit, and the hardware switch and the first switch unit are in communication connection, and when the hardware switch is triggered in a first preset manner, the first switch unit is turned on. The hardware switch is in communication connection with the master control unit, and when the hardware switch is triggered in a second preset manner, the master control unit controls the first switch unit to be turned off.

95. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 94, characterized in that, The power input part comprises an auxiliary power supply. One end of the first switch unit is connected to the energy storage device and the auxiliary power supply, and the other end is connected to the master control unit. The auxiliary power supply is configured to supply power to the master control unit when the first switch unit is turned on, and the master control unit sends a self-locking signal to the first switch unit when the master control unit is powered on.

96. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 95, characterized in that, The charging device comprises an anti-backflow unit. The anti-backflow unit comprises a diode, the anode of the diode being connected to the negative electrode of the energy storage device, the negative electrode of the vehicle charging output end and the auxiliary power supply, and the cathode of the diode being connected to the first switch unit.

97. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 95, characterized in that, The charging device comprises a pre-charging unit, the input end of the pre-charging unit being connected to the energy storage device and the auxiliary power supply, and the output end of the pre-charging unit being connected to the vehicle charging output end. The pre-charging unit comprises a pre-charging resistor and a pre-charging switch arranged in series, and the control end of the pre-charging switch is connected to the master control unit.

98. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 95, characterized in that, The charging device comprises an isolation unit, a driving unit and a power unit. The power unit is configured to control the external power supply to charge the energy storage device and / or supply power to the external load connected to the first direct current output end based on the signal sent by the master control unit. The power unit has one end connected to the power input unit and the other end connected to the energy storage device and the first DC output unit respectively; The driving unit is configured to drive the power unit; The isolation unit is configured to be optoelectronic isolation; The input end of the isolation unit is connected to the energy storage device and the auxiliary power supply, the output end of the isolation unit is provided with a light emitting device, the control end of the isolation unit is connected to the main control unit, the input end of the driving unit is provided with an optoelectronic conversion device corresponding to the light emitting device, and the output end of the driving unit is communicatively connected to the power unit.

99. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 94, characterized in that, The first switch unit and the main control unit are connected in series with the first voltage reduction unit and the second voltage reduction unit; The charging device further comprises: A panel integrated with the first DC output unit and the first AC output unit; A panel control unit is arranged in the panel, and the panel control unit is communicatively connected to the first DC output unit and the first AC output unit; The second voltage reduction unit is configured to supply power to the panel control unit; The control end of the second voltage reduction unit is connected to the main control unit, the input end of the second voltage reduction unit is connected to the first voltage reduction unit, and the output end of the second voltage reduction unit is connected to the panel control unit.

100. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 99, characterized in that, The charging device further comprises: A fan unit configured to control the fan to work to cool the energy storage device, the first voltage reduction unit is electrically connected to the fan unit, and the main control unit is communicatively connected to the fan unit.

101. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 83, characterized in that, The charging device comprises: A cover body matched with the main body; The charging device comprises an open cover monitoring unit communicatively connected to the main control unit, the open cover monitoring unit is configured to send a signal to the main control unit indicating whether the cover body is closed, and in the case that the cover body is detected to be opened, the main control unit reduces the charge and discharge current of the energy storage device.

102. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 83, characterized in that, The charging device comprises: A panel provided with a display screen, the display screen is configured to display parameters related to any one of the power input unit, the power output unit or the energy storage device; A panel control unit is arranged in the panel, and the panel control unit is communicatively connected to the display screen control unit of the display screen and the main control unit; The display screen is configured to display at least an estimated discharge duration of the energy storage device, the display screen control unit is configured to obtain the remaining capacity and the discharge current of the energy storage device, calculate the estimated discharge duration based on the remaining capacity and the discharge current, and control the display screen to display the estimated discharge duration.

103. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 83, characterized in that, The charging device comprises: A panel provided with a light strip, the light strip is configured to illuminate, and a panel control unit is arranged in the panel, the panel control unit is communicatively connected to a light strip control unit of the light strip.

104. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 83, characterized in that, The charging device comprises an inverter communication unit communicatively connected to the main control unit, the power input unit comprises an electric energy conversion module electrically connected to the energy storage device and the power output unit, and the inverter communication unit is communicatively connected to an electric energy conversion control unit of the electric energy conversion module; The power conversion module is configured to convert the power supply voltage of the external power supply received by the DC input end or the AC input end into the power supply voltage output by the power storage device and the power output part under the control of the power conversion control unit.

105. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 104, characterized in that, The power conversion module comprises the DC input end, a second DC output interface, the AC input end and a second AC output interface, the second DC output interface is connected to the first DC output end and the power storage device, and the second AC output interface is connected to the first AC output end.

106. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 104, characterized in that, The power conversion module further comprises an AC-DC conversion unit, a DC-DC conversion unit and a bus, the AC input end is connected to the bus via the AC-DC conversion unit, the DC input end is connected to the bus via the DC-DC conversion unit, and the bus is connected to the second DC output interface and the second AC output interface respectively.

107. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 104, characterized in that, The AC input end is configured to input 120V-240V AC power, and the first AC output end is configured to output 120V AC power.

108. [Amended according to Rule 91 on 30.10.2025] The charging device according to claim 83, characterized in that, The charging device comprises a log unit in communication connection with the master control unit and configured to record the use log of the charging device. And / or, the charging device comprises a clock unit in communication connection with the master control unit and configured to obtain the current time. And / or, the charging device comprises a remote control unit in communication connection with the master control unit and configured to be in communication connection with an external electronic device.

109. [Amended according to Rule 91 on 30.10.2025] A charging system, characterized in that, The charging system comprises a multi-functional vehicle, a connecting cable and a charging device. The charging device comprises a body forming a containing part; a power storage device detachably accommodated in the containing part; a power input part provided on the surface of the body and configured to access an external power supply, the power input part being electrically connected to the power storage device, the power input part comprising a DC input end and an AC input end, the AC input end being provided with a power failure monitoring unit configured to monitor whether a power failure occurs in the AC input end; a power output part provided on the surface of the body and configured to be connected to an external load, the power output part being electrically connected to the power input part and the power storage device, the power output part comprising a first DC output end and a first AC output end, the first DC output end comprising at least a vehicle charging output end configured to be connected to a multi-functional vehicle; a master control unit configured to be connected to the power storage device, the power input part and the power output part, and configured to control the external power supply to supply power to the power storage device, and to control the power storage device or the external power supply to supply power to the power output part; when the power failure monitoring unit detects a power failure, the power failure information is sent to the master control unit, the master control unit is configured to control the power storage device to supply power to the power output part within a preset time period in response to the power failure information, and the preset time period is not greater than 20ms; one end of the connecting cable is matched with the vehicle charging output end, and the other end is matched with a charging seat of the multi-functional vehicle.

110. [Amended according to Rule 91 on 30.10.2025] A charging system, characterized in that, comprises: A multifunctional vehicle, a connecting cable and a charging device, the connecting cable is configured to connect the multifunctional vehicle and the charging device; The connecting cable is provided with a detection line, a first end of the detection line is connected to the multifunctional vehicle, and a second end of the detection line is connected to a first detection circuit of the charging device; The first detection circuit of the charging device is configured to detect whether the multifunctional vehicle, the connecting cable and the charging device are connected, and the first detection circuit includes a vehicle-charging access point and a vehicle-charging detection point, the vehicle-charging access point is configured to access the second end of the detection line; The charging device is provided with a master control unit connected to the vehicle-charging detection point, configured to obtain the voltage of the vehicle-charging detection point, and in the case that the voltage of the vehicle-charging detection point is a target voltage value, it is determined that the multifunctional vehicle, the connecting cable and the charging device are connected.

111. [Amended according to Rule 91 on 30.10.2025] The charging system according to claim 110, characterized in that, The first detection circuit of the charging device includes a first charging detection power supply and three first, second and third vehicle-charging resistors connected in series, the first charging detection power supply is connected to the first vehicle-charging resistor, and the third vehicle-charging resistor is grounded. The vehicle-charging access point is located between the first and second vehicle-charging resistors, and the vehicle-charging detection point is located between the second and third vehicle-charging resistors.

112. [Amended according to Rule 91 on 30.10.2025] The charging system according to claim 111, characterized in that, The first detection circuit includes a first vehicle-charging diode, the anode of the first vehicle-charging diode is connected to the first charging detection power supply, and the cathode of the first vehicle-charging diode is connected to the first vehicle-charging resistor.

113. [Amended according to Rule 91 on 30.10.2025] The charging system according to claim 111, characterized in that, The multifunctional vehicle includes a second detection circuit including a second charging detection power supply, in the case that the multifunctional vehicle, the detection line and the charging device are connected, the second charging detection power supply provides voltage to the vehicle-charging access point through the first end and the second end of the detection line. The master control unit is configured to determine whether the multifunctional vehicle, the connecting cable and the charging device are connected based on the voltage obtained by the vehicle-charging detection point, and whether the multifunctional vehicle is powered on.

114. [Amended according to Rule 91 on 30.10.2025] The charging system according to claim 113, characterized in that, The master control unit is configured to: In the case that the vehicle-charging detection point obtains a first voltage value, it is determined that the multifunctional vehicle, the connecting cable and the charging device are connected and the multifunctional vehicle is powered on; In the case that the vehicle-charging detection point obtains a second voltage value, it is determined that the multifunctional vehicle, the connecting cable and the charging device are connected and the multifunctional vehicle is powered off, and the target voltage value includes the first voltage value and the second voltage value; In the case that the vehicle-charging detection point obtains a third voltage value, it is determined that the multifunctional vehicle, the connecting cable and the charging device are not connected.

115. [Amended according to Rule 91 on 30.10.2025] The charging system according to claim 114, characterized in that, The master control unit is configured to charge the multifunctional vehicle when the first voltage is obtained by the vehicle-charging detection point.

116. [Amended according to Rule 91 on 30.10.2025] The charging system according to claim 113, characterized in that, The voltage of the first charging detection power supply is greater than the voltage of the second charging detection power supply.

117. [Amended according to Rule 91 on 30.10.2025] The charging system according to claim 110, characterized in that, The multifunctional vehicle comprises a second detection circuit, the second detection circuit comprises a second charging detection power supply, a second vehicle charging diode, a fourth vehicle charging resistor, a first cable access point and a second cable access point, the second charging detection power supply is grounded via the second vehicle charging diode and the fourth vehicle charging resistor, the first cable access point is connected between the second vehicle charging diode and the fourth vehicle charging resistor, and the first cable access point and the second cable access point are open circuits; A first end of the detection line comprises a first connection end and a second connection end which are short-circuited, when the detection line is connected to the multifunctional vehicle, the first connection end is connected to the first cable access point, and the second connection end is connected to the second cable access point; The second cable access point is connected to a battery management system of the multifunctional vehicle, and when the battery management system detects that the level of the second cable access point changes from a low level to a high level, it is determined that the connection of the detection line to the multifunctional vehicle is completed.

118. [Amended according to Rule 91 on 30.10.2025] The charging system according to claim 117, characterized in that, The second detection circuit comprises a voltage dividing circuit connected between the second cable access point and the second connection end, configured to protect the battery management system.

119. [Amended according to Rule 91 on 30.10.2025] The charging system according to claim 117, characterized in that, The detection line comprises a switch connected between the first connection end and the second connection end, when the switch is turned on, the first connection end and the second connection end are short-circuited.

120. [Amended according to Rule 91 on 30.10.2025] The charging system according to claim 110, characterized in that, The detection circuit of the charging device comprises a third charging detection power supply, a third cable access point and a fourth cable access point, the third cable access point is connected to the third charging detection power supply and the master control unit respectively, the fourth cable access point is grounded, and the third cable access point and the fourth cable access point are open circuits; A second end of the detection line comprises a third connection end and a fourth connection end which are short-circuited, the third connection end is matched with the third cable access point, and the fourth connection end is matched with the fourth cable access point; The master control unit is configured to obtain the voltage of the third cable access point, and in the case that the voltage of the third cable access point is zero, it is determined that the connection of the charging device to the connection cable is completed.

121. [Amended according to Rule 91 on 30.10.2025] The charging system according to claim 120, characterized in that, The detection circuit of the charging device comprises a fifth vehicle charging resistor connected between the third charging detection power supply and the third cable access point. 122.[Amended according to Rule 91 on 30.10.2025] The charging system according to claim 110, characterized in that, The detection line comprises a communication line configured to transmit RS485 protocol information. The detection line comprises a charging line, and the charging device charges the multifunctional vehicle via the charging line. 123.[Amended according to Rule 91 on 30.10.2025] The charging system according to claim 110, characterized in that, The charging device comprises: a body forming a containing portion; a storage device detachably accommodated in the containing portion; a power input portion provided on the surface of the body and configured to access an external power supply, the power input portion being electrically connected to the storage device, the power input portion comprising a direct current input end and an alternating current input end; a power output portion provided on the surface of the body and configured to connect to an external load, the power output portion being electrically connected to the power input portion and the storage device, the power output portion comprising a first direct current output end and a first alternating current output end, the first direct current output end comprising at least a vehicle charging output end, and the vehicle charging output end having the first detection circuit; The master control unit is configured to connect the energy storage device, the power input unit and the power output unit, control the external power supply to supply power to the energy storage device, and control the energy storage device or the external power supply to supply power to the power output unit. 124.[Amended according to Rule 91 on 30.10.2025] A charging system, characterized in that, The application relates to a garden working vehicle, a connecting cable and a charging device. The connecting cable is provided with a detection line, a first end of the detection line is connected to the garden working vehicle, and a second end of the detection line is connected to a first detection circuit of the charging device. The first detection circuit of the charging device is configured to detect whether the garden working vehicle, the connecting cable and the charging device are connected, and the first detection circuit comprises a vehicle-charging access point and a vehicle-charging detection point. The charging device is provided with a master control unit connected to the vehicle-charging detection point, configured to acquire the voltage of the vehicle-charging detection point, and determine that the garden working vehicle, the connecting cable and the charging device are connected when the voltage of the vehicle-charging detection point is a target voltage value. The application relates to a riding mower, a connecting cable and a charging device. 125.[Amended according to Rule 91 on 30.10.2025] A charging system, characterized in that, The connecting cable is provided with a detection line, a first end of the detection line is connected to the riding mower, and a second end of the detection line is connected to a first detection circuit of the charging device. The first detection circuit of the charging device is configured to detect whether the riding mower, the connecting cable and the charging device are connected, and the first detection circuit comprises a vehicle-charging access point and a vehicle-charging detection point. The charging device is provided with a master control unit connected to the vehicle-charging detection point, configured to acquire the voltage of the vehicle-charging detection point, and determine that the riding mower, the connecting cable and the charging device are connected when the voltage of the vehicle-charging detection point is a target voltage value. ​ ​

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