Electric device, charging device, charging system, and charging method

Abstract

Disclosed in the present application are an electric device, a charging device, a charging system, and a charging method The electric device comprises a charged contact, a first switch circuit, a second switch circuit, a voltage measurement circuit, a battery, and a first control apparatus. After receiving a measurement voltage signal that is output by the voltage measurement circuit, the first control apparatus controls the first switch circuit to be switched off and controls the second switch circuit to be switched on, so that the safety of the electric device and the charging device during a charging idle period is improved, and a charging control process is simplified.

Description

Electric equipment, charging equipment, charging system and charging method

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application 202311732909.1, filed on December 15, 2023, entitled “Electric Equipment, Charging Equipment, Charging System and Charging Method,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of charging technology, and in particular relates to an electrical device, a charging device, a charging system and a charging method. Background Art

[0004] In recent years, mobile electrical devices such as sweepers, robots, and electric vehicles have become increasingly powered by power batteries and equipped with autonomous charging capabilities. Existing autonomous charging control methods primarily involve first navigating the device to the vicinity of a charging station. Communication between the device and the charging station is then achieved through infrared communication, carrier communication, or by adding additional contacts outside the charging electrodes, enabling automatic charging and docking.

[0005] For outdoor mobile power devices, the reliability of the charging system must be considered alongside safety and convenience. Adding additional communication circuits between the mobile power device and the charger increases the difficulty of connecting the device to the charging station, complicating the automatic charging process and reducing charging efficiency. Furthermore, when the power device and charger electrodes are charged in standby mode, this can easily pose a safety hazard. Summary of the Invention

[0006] The embodiments of the present application provide an electric device, a charging device, a charging system, and a charging method, so as to make the charging control of the electric device more concise and efficient and improve the safety of the electric device and the charging device.

[0007] According to a first aspect of the present application, an embodiment of the present application provides an electrical device capable of being charged by a charging device, the charging device comprising charging contacts. The electrical device comprises a charged contact, a first switch circuit, a second switch circuit, a voltage detection circuit, a battery, and a first control device, wherein the charged contact, the first switch circuit, the voltage detection circuit, and an input end of the first control device are electrically connected, and a first output end of the first control device is electrically connected to a control end of the first switch circuit; the charged contact, the second switch circuit, and the battery are electrically connected, and a second output end of the first control device is electrically connected to a control end of the second switch circuit; the charged contact is configured to receive a detection voltage output by a charging contact of a charging device connected to the electrical device; the first control device is configured to control the first switch circuit to conduct upon receiving a charging instruction, and to control the first switch circuit to disconnect and control the second switch circuit to conduct upon receiving a detection voltage signal output by the voltage detection circuit, wherein the detection voltage signal is generated after the voltage detection circuit is supplied with the detection voltage.

[0008] According to any embodiment of the first aspect described above in the present application, the first switching circuit includes a first relay and a first control module, the output end of the first control module is connected to the coil of the first relay, and the input end of the first control module is connected to the first output end of the first control device.

[0009] According to any implementation of the first aspect of the present application, the voltage detection circuit includes a first voltage divider resistor, a second voltage divider resistor and a voltage follower, the first voltage divider resistor and the second voltage divider resistor are connected in series with the contacts of the first relay, the input end of the voltage follower is connected between the first voltage divider resistor and the second voltage divider resistor, and the output end of the voltage follower is connected to the input end of the first control device.

[0010] According to any embodiment of the first aspect of the present application, the second switching circuit includes a second relay and a second control module, the output end of the second control module is connected to the coil of the second relay, and the input end of the second control module is connected to the second output end of the first control device.

[0011] According to a second aspect of the present application, an embodiment of the present application further provides a charging device for charging an electrical device according to any of the above embodiments. The charging device includes a charging contact, a third switch circuit, a fourth switch circuit, a detection voltage output module, a charging voltage output module, and a second control device. The charging contact, the third switch circuit, and an output end of the detection voltage output module are electrically connected, and the third output end of the second control device is electrically connected to the control end of the third switch circuit. The charging contact, the fourth switch circuit, and an output end of the charging voltage output module are electrically connected, and the fourth output end of the second control device is electrically connected to the control end of the fourth switch circuit. The detection voltage output module is configured to provide a detection voltage. The second control device is configured to control the third switch circuit to conduct upon receiving a power-on signal to output the detection voltage through the charging contact, and to control the third switch circuit to disconnect and control the fourth switch circuit to conduct after the third switch circuit is controlled to conduct for a first preset duration. The power-on signal is generated when the charging contact contacts a charged contact of the electrical device.

[0012] According to any implementation of the second aspect of the present application, the third switching circuit includes a third relay and a third control module, the output end of the third control module is connected to the coil of the third relay, and the input end of the third control module is connected to the third output end of the second control device.

[0013] According to any implementation of the second aspect of the present application, the fourth switching circuit includes a fourth relay and a fourth control module, the output end of the fourth control module is connected to the coil of the fourth relay, and the input end of the fourth control module is connected to the fourth output end of the second control device.

[0014] According to any implementation of the aforementioned second aspect of the present application, the charging device also includes: a fifth switching circuit, connected in series between the input end of the charging voltage output module and the AC power output end, and the fifth output end of the second control device is connected to the control end of the fifth switching circuit; and the second control device is also configured to control the fifth switching circuit to be turned on after controlling the third switching circuit to be turned on for a first preset period of time.

[0015] According to any implementation of the second aspect of the present application, the charging device also includes: a power conversion module and a micro switch, which are connected in series between the AC power output terminal and the power input terminal of the second control device in sequence, and the micro switch is configured to close after the charging contacts contact the charged contacts of the electrical device to generate a power-on signal at the power input terminal of the second control device.

[0016] According to the third aspect of the present application, an embodiment of the present application further provides a charging system, which includes the power-consuming device of any of the above embodiments and the charging device of any of the above embodiments.

[0017] According to the fourth aspect of the present application, an embodiment of the present application also provides a charging method for an electrical device according to any of the above embodiments, the charging method comprising: in response to a received charging instruction, controlling the first switch circuit of the electrical device to be turned on to connect the charged contacts of the electrical device to the voltage detection circuit of the electrical device; after receiving the detection voltage signal output by the voltage detection circuit, controlling the first switch circuit to be disconnected and controlling the second switch circuit of the electrical device to be turned on to connect the charged contacts to the battery of the electrical device, the detection voltage signal is generated after the detection voltage is passed into the voltage detection circuit, and the detection voltage is output by the charging contacts of the charging device connected to the electrical device.

[0018] According to an implementation scheme of any of the aforementioned fourth aspects of the present application, the first switching circuit includes a first relay and a first control module, the output end of the first control module is connected to the coil of the first relay, and the input end of the first control module is connected to the first output end of the first control device; controlling the first switching circuit of the electrical equipment to be turned on includes: outputting a first control signal to the first control module so that the first control module passes current to the coil of the first relay, thereby prompting the contacts of the first relay to close.

[0019] According to an implementation scheme of any of the aforementioned fourth aspects of the present application, the second switching circuit includes a second relay and a second control module, the output end of the second control module is connected to the coil of the second relay, and the input end of the second control module is connected to the second output end of the first control device; controlling the second switching circuit of the electrical equipment to be turned on includes: outputting a second control signal to the second control module so that the second control module passes current to the coil of the second relay, thereby prompting the contacts of the second relay to close.

[0020] According to any implementation of the aforementioned fourth aspect of the present application, after controlling the second switch circuit of the electrical device to be turned on to connect the charged contacts to the battery of the electrical device, the charging method also includes: continuously reading the status of the battery through the communication interface of the battery; and determining whether the battery is read to be in a charging state within a second preset time period; if so, controlling the second switch circuit to remain in a conductive state; if not, controlling the second switch circuit to be disconnected.

[0021] According to the fifth aspect of the present application, an embodiment of the present application also provides a charging method for an electrical device according to any of the above embodiments, the charging method including: obtaining a power-on signal, which is generated after the charging contacts of the charging device contact the charged contacts of the electrical device; controlling the third switch circuit of the charging device to be turned on, so as to output the detection voltage provided by the detection voltage output module of the charging device through the charging contacts; and after a delay of a first preset time length, controlling the third switch circuit to be disconnected, and controlling the fourth switch circuit of the charging device to be turned on, so as to connect the charging contacts to the output end of the charging voltage output module of the charging device.

[0022] According to an implementation scheme of any of the aforementioned fifth aspects of the present application, the third switching circuit includes a third relay and a third control module, the output end of the third control module is connected to the coil of the third relay, and the input end of the third control module is connected to the third output end of the second control device; controlling the third switching circuit of the charging device to be turned on includes: outputting a third control signal to the third control module so that the third control module passes current to the coil of the third relay, thereby prompting the contacts of the third relay to close.

[0023] According to any implementation of the aforementioned fifth aspect of the present application, the fourth switching circuit includes a fourth relay and a fourth control module, the output end of the fourth control module is connected to the coil of the fourth relay, and the input end of the fourth control module is connected to the fourth output end of the second control device; controlling the fourth switching circuit of the charging device to be turned on includes: outputting a fourth control signal to the fourth control module so that the fourth control module passes current to the coil of the fourth relay, thereby prompting the contacts of the fourth relay to close.

[0024] According to any implementation of the aforementioned fifth aspect of the present application, the charging device also includes a fifth switching circuit, which is connected in series between the input end of the charging voltage output module and the mains output end, and the fifth output end of the second control device is connected to the control end of the fifth switching circuit; after delaying for a first preset time period, the charging method also includes: controlling the fifth switching circuit to be turned on to connect the input end of the charging voltage output module to the mains output end.

[0025] According to an implementation scheme of any of the aforementioned fifth aspects of the present application, the charging device also includes a second control device, and a power conversion module and a micro switch connected in series between the AC power output end and the power input end of the second control device. The micro switch is configured to close after the charging contacts contact the charged contacts of the electrical device, and the power-on signal is generated after the micro switch is closed.

[0026] The electric device provided in the embodiments of the present application comprises a first switch circuit and a voltage detection circuit electrically connected between the charged contact and the input terminal of a first control device, and a second switch circuit electrically connected between the charged contact and the battery. The control terminal of the first switch circuit and the control terminal of the second switch circuit are electrically connected to the first output terminal and the second output terminal of the first control device, respectively. After receiving a charging instruction, the electric device sends a control signal to the control terminal of the first switch circuit via the first output terminal of the first control device, thereby controlling the first switch circuit to conduct, thereby connecting the charged contact and the voltage detection circuit. When the charged contact of the electric device contacts the charging contact of the charging device, the charged contact inputs the detection voltage output by the charging device into the voltage detection circuit. The voltage detection circuit generates a detection voltage signal after inputting the detection voltage and inputs it into the first control device. After receiving the detection voltage signal, the first control device disconnects the first switch circuit and connects the second switch circuit, connecting the charged contact of the electric device to the battery. When the charging device outputs a charging voltage through its charging contact, the charging voltage can be input into the battery through the charged contact, thereby charging the battery.

[0027] Before the charged contacts of the electric device provided in the embodiments of the present application come into contact with the charging contacts of the charging device, the charging contacts are physically disconnected from the battery, effectively improving the safety of the electric device during the idle charging period. The electric device provided in the embodiments of the present application, by providing a first switching circuit and a voltage detection circuit, cleverly utilizes a detection voltage within a safe range to determine whether a stable electrical connection has been established between the electric device and the charging device. This eliminates the need for additional communication circuits or communication ports, reduces the difficulty of charging the electric device, and makes charging control of the electric device more concise and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] FIG1 is a schematic diagram of a module structure of an electrical device provided in one embodiment of the present application.

[0030] FIG2 is a schematic diagram of a control circuit of an electrical device provided in one embodiment of the present application.

[0031] FIG3 is a schematic diagram of the module structure of a charging device provided in one embodiment of the present application.

[0032] FIG4 is a schematic diagram of a control circuit of a charging device provided in one embodiment of the present application.

[0033] FIG5 is a schematic diagram of a control circuit of a charging device provided in another embodiment of the present application.

[0034] FIG6 is a schematic diagram of the module structure of a charging system provided in one embodiment of the present application.

[0035] FIG7 is a flow chart of a method for charging an electric device according to an embodiment of the present application.

[0036] FIG8 is a flow chart of a method for charging an electric device according to another embodiment of the present application.

[0037] FIG9 is a flow chart of a charging method for a charging device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0038] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present application by illustrating the examples of the present application.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, the elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the process, method, article, or device comprising the elements.

[0040] FIG1 is a schematic diagram of the module structure of an electric device provided in one embodiment of the present application, and FIG2 is a schematic diagram of the control circuit of an electric device provided in one embodiment of the present application. Referring to FIG1 and FIG2 , an electric device 100 provided in an embodiment of the present application can be charged by a charging device, which includes charging contacts. The electric device 100 includes a charged contact 110, a first switch circuit 120, a second switch circuit 130, a voltage detection circuit 140, a battery 150, and a first control device 160. The charged contact 110, the first switch circuit 120, the voltage detection circuit 140, and an input terminal 161 of the first control device 160 are electrically connected. The first output terminal OUT1 of the first control device 160 is electrically connected to the control terminal of the first switch circuit 120. The charged contact 110, the second switch circuit 130, and the battery 150 are electrically connected. The second output terminal OUT2 of the first control device 160 is electrically connected to the control terminal of the second switch circuit 130.

[0041] The charged contact 110 is configured to receive a detection voltage output by the charging contacts of a charging device connected to the power-consuming device 100. The first control device 160 is configured to control the first switch circuit 120 to conduct upon receiving a charging instruction, and to control the first switch circuit 120 to be disconnected and the second switch circuit 130 to be connected upon receiving a detection voltage signal output by the voltage detection circuit 140. The detection voltage signal is generated when the detection voltage is applied to the voltage detection circuit 140.

[0042] The charged contact 110 is further configured to receive a charging voltage outputted by a charging contact of a charging device connected to the power-consuming device 100. When the second switch circuit 130 is turned on, the charging voltage received by the charged contact 110 is connected to the battery 150.

[0043] The charged contact 110, the first switch circuit 120, the voltage detection circuit 140 and the input terminal IN1 of the first control device 160 may be connected in series in sequence. The charged contact 110, the second switch circuit 130 and the battery 150 may be connected in series in sequence.

[0044] The charged contact 110 can be in the form of a charging interface, an electrode sheet, etc. The charged contact 110 is made of a conductive material such as metal, conductive rubber, conductive plastic, etc.

[0045] The first control device 160 can send a control signal to the control terminal of the first switch circuit 120 via its first output terminal OUT1 to control the on / off of the first switch circuit 120. Similarly, the first control device 160 can send a control signal to the control terminal of the second switch circuit 130 via its second output terminal OUT2 to control the on / off of the second switch circuit 130.

[0046] The electric device 100 provided in this embodiment of the present application electrically connects a first switch circuit 120 and a voltage detection circuit 140 between the charged contact 110 and the input terminal IN1 of the first control device 160, and electrically connects a second switch circuit 130 between the charged contact 110 and the battery 150. The control terminals of the first switch circuit 120 and the second switch circuit 130 are electrically connected to the first output terminal OUT1 and the second output terminal of the first control device 160, respectively. After receiving a charging instruction, the electric device 100 sends a control signal to the control terminal of the first switch circuit 120 via the first output terminal OUT1 of the first control device 160, thereby controlling the first switch circuit 120 to conduct, thereby connecting the charged contact 110 and the voltage detection circuit 140. When the charged contact 110 of the electrical device 100 contacts the charging contact of the charging device, the charged contact 110 inputs the detection voltage output by the charging device into the voltage detection circuit 140. After inputting the detection voltage, the voltage detection circuit 140 generates a detection voltage signal and inputs it to the first control device 160. After receiving the detection voltage signal, the first control device 160 disconnects the first switch circuit 120 and turns on the second switch circuit 130. The charged contact 110 of the electrical device is connected to the battery 150. When the charging device outputs the charging voltage through its charging contact, the charging voltage can be input into the battery 150 through the charged contact 110, thereby charging the battery 150.

[0047] Before the charged contacts 110 of the power-consuming device 100 provided in the embodiment of the present application come into contact with the charging contacts of the charging device, the charged contacts are physically disconnected from the battery 150, effectively improving the safety of the power-consuming device during the idle charging period. By providing a first switching circuit 120 and a voltage detection circuit 140, the power-consuming device 100 provided in the embodiment of the present application cleverly utilizes a detection voltage within a safe range to determine whether a stable electrical connection has been established between the power-consuming device 100 and the charging device. This eliminates the need for additional communication circuits or communication ports, reduces the difficulty of charging the power-consuming device 100, and makes charging control of the power-consuming device 100 more concise and efficient.

[0048] In some embodiments, the first switch circuit 120 includes a first relay 121 and a first control module 122 , wherein the output of the first control module 122 is connected to the coil of the first relay 121 , and the input of the first control module 122 is connected to the first output OUT1 of the first control device 160 .

[0049] The first relay 121 can be a normally open relay. When the first output terminal OUT1 of the first control device 160 outputs a control signal to the first control module 122, the output terminal of the first control module 122 outputs a current to the coil of the first relay 121, thereby controlling the contact of the first relay 121 to close. When the first output terminal OUT1 of the first control device 160 does not output a control signal, the first control module 122 does not output current, and the contact of the first relay 121 opens.

[0050] In the embodiment of the present application, by providing the first switch circuit 120 with the first relay 121 and the first control module 122 , the on-off control of the first switch circuit 120 is more convenient and the circuit structure is simpler.

[0051] In some embodiments, the voltage detection circuit 140 includes a first voltage-dividing resistor R1, a second voltage-dividing resistor R2 and a voltage follower U1. The first voltage-dividing resistor R1 and the second voltage-dividing resistor R2 are connected in series with the contacts of the first relay 121. The input end of the voltage follower U1 is connected between the first voltage-dividing resistor R1 and the second voltage-dividing resistor R2. The output end of the voltage follower U1 is connected to the input end IN1 of the first control device 160.

[0052] The detection voltage output by the charging contact 110 is introduced into the voltage follower U1 via the first voltage-dividing resistor R1 . The voltage output by the voltage follower U1 can be converted by the AD conversion module of the first control device 160 for detection voltage signal acquisition.

[0053] The voltage detection circuit 140 of the embodiment of the present application can prevent the voltage entering the voltage follower U1 from being too large by providing a voltage-dividing resistor, thereby effectively improving the safety of the circuit.

[0054] The voltage detection circuit 140 may further include a filtering module and a rectifying module to further improve the safety and stability of the circuit.

[0055] In some embodiments, the second switch circuit 130 includes a second relay 131 and a second control module 132 , wherein the output of the second control module 132 is connected to the coil of the second relay 131 , and the input of the second control module 132 is connected to the second output terminal OUT2 of the first control device 160 .

[0056] The second relay 131 can be a normally open relay. When the second output terminal OUT2 of the first control device 160 outputs a control signal to the second control module 132, the output terminal of the second control module 132 outputs a current to the coil of the second relay 131, thereby controlling the contact of the second relay 131 to close. When the second output terminal OUT2 of the first control device 160 does not output a control signal, the second control module 132 does not output current, and the contact of the second relay 131 opens.

[0057] In the embodiment of the present application, by providing the second switch circuit 130 with the second relay 131 and the second control module 132 , the on-off control of the second switch circuit 130 is more convenient and the circuit structure is simpler.

[0058] According to the second aspect of the present application, an embodiment of the present application further provides a charging device for charging the electrical device 100 of any of the above embodiments. Figure 3 is a schematic diagram of the module structure of the charging device provided in one embodiment of the present application, and Figure 4 is a schematic diagram of the control circuit of the charging device provided in one embodiment of the present application. Referring to Figures 3 and 4, the charging device 200 provided in the embodiment of the present application may include charging contacts 210, a third switching circuit 220, a fourth switching circuit 230, a detection voltage output module 260, a charging voltage output module 240, and a second control device 250.

[0059] The charging contact 210, the third switch circuit 220, and the output terminal Vout1 of the detection voltage output module 260 are electrically connected. The third output terminal OUT3 of the second control device 250 is electrically connected to the control terminal of the third switch circuit 220. The charging contact 210, the fourth switch circuit 230, and the output terminal Vout2 of the charging voltage output module 240 are electrically connected. The fourth output terminal OUT4 of the second control device 250 is electrically connected to the control terminal of the fourth switch circuit 230.

[0060] The detection voltage output module 260 is configured to provide a detection voltage. The second control device 250 is configured to control the third switch circuit 220 to conduct to output the detection voltage through the charging contact 210 after receiving a power-on signal generated when the charging contact 210 contacts the charged contact 110 of the powered device 100, and to control the third switch circuit 220 to be turned off and the fourth switch circuit 230 to be turned on after the third switch circuit 220 is turned on for a first preset time period.

[0061] The charging contact 210, the third switch circuit 220 and the output terminal Vout1 of the detection voltage output module 260 can be connected in series. The charging contact 210, the fourth switch circuit 230 and the output terminal Vout2 of the charging voltage output module 240 can be connected in series.

[0062] The charging contact 210 can be in the form of a charging interface, an electrode sheet, or other structural forms. The charging contact 210 is made of a conductive material such as metal, conductive rubber, or conductive plastic. The structures of the charged contact 110 and the charging contact 210 are compatible.

[0063] The second control device 250 can send a control signal to the control terminal of the third switch circuit 220 via its third output terminal OUT3 to control the on / off of the third switch circuit 220. Similarly, the second control device 250 can send a control signal to the control terminal of the fourth switch circuit 230 via its fourth output terminal OUT4 to control the on / off of the fourth switch circuit 230.

[0064] The detection voltage output module 260 can output a safe voltage such as 12V, 24V, or 48V. The detection voltage output module 260 can be a DC power supply that can directly output a safe voltage, or it can include one or more voltage conversion modules for converting AC voltage to DC voltage and / or converting high voltage to low voltage. The detection voltage output module 260 can be a separate circuit or integrated into the second control device 250.

[0065] The charging device 200 provided in the embodiment of the present application comprises a third switch circuit 220 disposed between the charging contact 210 and the output terminal Vout1 of the detection voltage output module 260, and a fourth switch circuit 230 disposed between the charging contact 210 and the output terminal Vout2 of the charging voltage output module 240. The control terminals of the third switch circuit 220 and the fourth switch circuit 230 are electrically connected to the third output terminal OUT3 and the fourth output terminal OUT4 of the second control device 250, respectively. After the charged contact 110 of the power-consuming device 100 contacts the charging contact 210 of the charging device 200, the charging device 200 receives a power-on signal and transmits a control signal to the control terminal of the third switch circuit 220 via the third output terminal OUT3 of the second control device 250 to control the third switch circuit 220 to conduct, thereby connecting the charging contact 210 to the output terminal Vout1 of the detection voltage output module 260. This allows the detection voltage to be output through the charging contact 210, causing the charged contact 110 to input the detection voltage output by the charging device 200 into the voltage detection circuit 140. After a first preset delay, as previously described, the charged contact 110 of the electrical device is connected to the battery 150. After the first preset delay, the second control device 250 controls the third switch circuit 220 to be turned off and sends a control signal to the control terminal of the fourth switch circuit 230 via its fourth output terminal OUT4, turning on the fourth switch circuit 230. This connects the charging contact 210 to the output terminal Vout2 of the charging voltage output module 240, thereby enabling the output of the charging voltage through the charging contact 210. The charging voltage is then input to the battery via the charged contact 110, thereby charging the battery.

[0066] Before the charging contacts 210 of the charging device 200 provided in this embodiment of the present application come into contact with the charged contacts 110 of the power-consuming device 100, the charging contacts 210 are physically disconnected from the output terminal Vout2 of the charging voltage output module 240, effectively improving the safety of the charging device during idle charging periods. The charging device 200 provided in this embodiment of the present application utilizes a third switching circuit 220 and a detection voltage output module 260. The detection voltage output module 260 first outputs a detection voltage within a safe range. This detection voltage is used to determine whether a stable electrical connection has been established between the power-consuming device 100 and the charging device 200. This eliminates the need for additional communication circuits or ports, reduces the difficulty of charging the charging device 200 in charging piles, and makes charging control of the charging device 200 more concise and efficient.

[0067] In some embodiments, the third switch circuit 220 includes a third relay 221 and a third control module 222 , the output end of the third control module 222 is connected to the coil of the third relay 221 , and the input end of the third control module 222 is connected to the third output end OUT3 of the second control device 250 .

[0068] The third relay 221 can be a normally open relay. When the third output terminal OUT3 of the second control device 250 outputs a control signal to the third control module 222, the output terminal of the third control module 222 outputs a current to the coil of the third relay 221, thereby controlling the contact of the third relay 221 to close. When the third output terminal OUT3 of the second control device 250 does not output a control signal, the third control module 222 does not output current, and the contact of the third relay 221 opens.

[0069] In the embodiment of the present application, by providing a third switch circuit 220 having a third relay 221 and a third control module 222 , on-off control of the third switch circuit 220 is more convenient and the circuit structure is simpler.

[0070] In some embodiments, the fourth switch circuit 230 includes a fourth relay 231 and a fourth control module 232 , the output end of the fourth control module 232 is connected to the coil of the fourth relay 231 , and the input end of the fourth control module 232 is connected to the fourth output end OUT4 of the second control device 250 .

[0071] The fourth relay 231 can be a normally open relay. When the fourth output terminal OUT4 of the second control device 250 outputs a control signal to the fourth control module 232, the output terminal of the fourth control module 232 outputs a current to the coil of the fourth relay 231, thereby controlling the contact of the fourth relay 231 to close. When the fourth output terminal OUT4 of the second control device 250 does not output a control signal, the fourth control module 232 does not output current, and the contact of the fourth relay 231 opens.

[0072] In the embodiment of the present application, the fourth switch circuit 230 having the fourth relay 231 and the fourth control module 232 is provided, so that the on-off control of the fourth switch circuit 230 is more convenient and the circuit structure is simpler.

[0073] Figure 5 is a schematic diagram of the control circuit of a charging device provided in another embodiment of the present application. In some embodiments, referring to Figure 5 , the charging device 200 further includes a fifth switching circuit, which is connected in series between the input terminal of the charging voltage output module 240 and the mains power output terminal. The fifth output terminal OUT5 of the second control device 250 is connected to the control terminal of the fifth switching circuit. The second control device 250 is further configured to control the fifth switching circuit to be turned on after controlling the third switching circuit 220 to be turned on for a first predetermined duration.

[0074] The fifth switching circuit includes at least a fifth relay 280. The contacts of the fifth relay 280 are connected in series between the input terminal of the charging voltage output module 240 and the mains power output terminal. The fifth output terminal OUT5 of the second control device 250 is connected to the coil of the fifth relay 280. When the second control device 250 inputs current to the coil of the fifth relay 280 through its fifth output terminal OUT5, the contacts of the fifth relay 280 close, thereby connecting the input terminal of the charging voltage output module 240 and the mains power output terminal.

[0075] In the embodiment of the present application, a fifth switching circuit is provided between the input end of the charging voltage output module 240 and the mains power output end. Before the charging contacts 210 of the charging device 200 and the charged contacts 110 of the power-consuming device 100 come into contact, the input end of the charging voltage output module 240 and the mains power output end are disconnected. The fifth switching circuit is only turned on after the third switching circuit 220 has been turned on for a first preset time period, thereby further improving the safety of the charging device 200 during the idle charging period.

[0076] In some embodiments, referring to FIG5 , the charging device 200 further includes a power conversion module 270 and a microswitch SQ1, which are sequentially connected in series between the mains power output terminal and the power input terminal of the second control device 250. The microswitch SQ1 is configured to close after the charging contact 210 contacts the charged contact 110 of the powered device 100, thereby generating a power-on signal at the power input terminal of the second control device 250.

[0077] The power conversion module 270 can be a switching power supply that converts the AC voltage output by the mains into a DC voltage. When the charging contacts 210 come into contact with the charged contacts 110 of the power-consuming device 100, the microswitch SQ1 is triggered to close, thereby connecting the power conversion module 270 to the power input terminal of the second control device 250. The voltage converted by the power conversion module 270 is input to the second control device 250, and the second control device 250 is powered on, which is equivalent to receiving the power-on signal.

[0078] According to the third aspect of the present application, embodiments of the present application further provide a charging system. Figure 6 is a schematic diagram of the module structure of a charging system provided by one embodiment of the present application. Referring to Figure 6, the charging system 1000 of the embodiment of the present application includes the power-consuming device 100 provided by any of the above embodiments and the charging device 200 provided by any of the above embodiments.

[0079] The power-consuming device 100 may be a mobile robot, a vehicle, or other device having a rechargeable battery. The charging device 200 may be a device having a charging function, such as a charging pile.

[0080] According to a fourth aspect of the present application, an embodiment of the present application further provides a method for charging an electric device according to any of the above embodiments. FIG7 is a flow chart of a method for charging an electric device according to an embodiment of the present application. Referring to FIG7 , the method for charging an electric device according to an embodiment of the present application includes:

[0081] Step S101 , in response to a received charging instruction, controlling the first switch circuit 120 of the electric device 100 to be turned on, so as to connect the charged contact 110 of the electric device 100 to the voltage detection circuit 140 of the electric device 100 ; and

[0082] In step S102, upon receiving the detection voltage signal output by the voltage detection circuit 140, the first switch circuit 120 is controlled to be disconnected and the second switch circuit 130 of the power-consuming device 100 is controlled to be connected, thereby connecting the charging contact 110 to the battery 150 of the power-consuming device 100. The detection voltage signal is generated when the voltage detection circuit 140 is supplied with a detection voltage, which is output by the charging contact 210 of the charging device 200 connected to the power-consuming device 100.

[0083] The charging method provided in the embodiment of the present application connects the charged contacts 110 of the power device 100 to the voltage detection circuit 140 only after receiving a charging command, effectively improving the safety of the power device 100 during the idle charging period. Furthermore, the charging method in the embodiment of the present application first uses a detection voltage within a safe range to determine whether a stable electrical connection has been established between the power device 100 and the charging device 200. This eliminates the need for additional communication circuits or communication ports, reduces the difficulty of connecting the power device 100 to the charging station, and makes charging control of the power device 100 more concise and efficient.

[0084] In some embodiments, the first switch circuit 120 includes a first relay 121 and a first control module 122 , wherein the output of the first control module 122 is connected to the coil of the first relay 121 , and the input of the first control module 122 is connected to the first output OUT1 of the first control device 160 .

[0085] In these embodiments, in step S101, the step of controlling the first switch circuit 120 of the electrical device 100 to be turned on may specifically include: outputting a first control signal to the first control module 122 so that the first control module 122 passes current to the coil of the first relay 121, thereby prompting the contacts of the first relay 121 to close.

[0086] Accordingly, in step S102 , the step of controlling the first switch circuit 120 to disconnect may specifically include: stopping outputting the first control signal to the first control module 122 so that no current flows through the coil of the first relay 121 , thereby causing the contacts of the first relay 121 to disconnect.

[0087] In some embodiments, the second switch circuit 130 includes a second relay 131 and a second control module 132 , wherein the output of the second control module 132 is connected to the coil of the second relay 131 , and the input of the second control module 132 is connected to the second output terminal OUT2 of the first control device 160 .

[0088] In these embodiments, in step S102, the step of controlling the conduction of the second switch circuit 130 of the electrical device 100 may specifically include: outputting a second control signal to the second control module 132 so that the second control module 132 passes current to the coil of the second relay 131, thereby prompting the contacts of the second relay 131 to close.

[0089] FIG8 is a flow chart of a charging method for an electric device according to another embodiment of the present application. Referring to FIG8 , in some embodiments, after controlling the second switch circuit 130 of the electric device 100 to be turned on to connect the charged contact 110 to the battery 150 of the electric device 100, the charging method according to the embodiment of the present application further includes:

[0090] Step S103, continuously reading the status of the battery 150 through the communication interface of the battery 150; and

[0091] Step S104, determining whether the battery 150 is in a charging state within the second preset time period; if so, proceeding to step S105; if not, proceeding to step S106;

[0092] Step S105, controlling the second switch circuit 130 to remain in the on state; and

[0093] Step S106 , controlling the second switch circuit 130 to be disconnected.

[0094] If the battery 150 is detected as being in a charging state within the second preset time period, it indicates that the charging connection between the power-consuming device 100 and the charging device 200 is successful, and the battery 150 can continue to be charged. If the battery 150 is not detected as being in a charging state within the second preset time period, it indicates that the charging connection between the power-consuming device 100 and the charging device 200 has failed and needs to be re-aligned. In this case, the second switch circuit 130 is controlled to be disconnected, which is both safe and convenient for re-execution of the above-mentioned charging method.

[0095] According to a fifth aspect of the present application, an embodiment of the present application further provides a charging method for a charging device according to any of the above embodiments. FIG9 is a flow chart of a charging method for a charging device provided by an embodiment of the present application. The charging method for a charging device according to an embodiment of the present application includes:

[0096] Step S201: Acquire a power-on signal, which is generated after the charging contact 210 of the charging device 200 contacts the charged contact 110 of the powered device 100;

[0097] Step S202 , controlling the third switch circuit 220 of the charging device 200 to be turned on, so as to output the detection voltage provided by the detection voltage output module 260 of the charging device 200 through the charging contact 210 ; and

[0098] In step S203 , after a first preset delay, the third switch circuit 220 is controlled to be disconnected, and the fourth switch circuit 230 of the charging device 200 is controlled to be connected, so as to connect the charging contact 210 to the output end of the charging voltage output module 240 of the charging device 200 .

[0099] The charging method provided in the embodiment of the present application connects the charging contact 210 to the output terminal of the detection voltage output module 260 only after receiving a power-on signal, thereby allowing the charging contact 210 to output the detection voltage. After a delay, the charging contact 210 is then connected to the output terminal Vout2 of the charging voltage output module 240, thereby allowing the charging contact 210 to output the charging voltage, effectively improving the safety of the charging device 200 during the idle charging period. The embodiment of the present application determines whether a stable electrical connection is established between the power-consuming device 100 and the charging device 200 based on a detection voltage within a safe range. This eliminates the need for additional communication circuits or communication ports, reduces the difficulty of charging the charging device 200 to connect to the charging pile, and makes the charging control of the charging device 200 more simple and efficient.

[0100] In some embodiments, the third switch circuit 220 includes a third relay 221 and a third control module 222 , the output end of the third control module 222 is connected to the coil of the third relay 221 , and the input end of the third control module 222 is connected to the third output end OUT3 of the second control device 250 .

[0101] In these embodiments, in step S202, the step of controlling the third switch circuit 220 of the charging device 200 to be turned on may specifically include: outputting a third control signal to the third control module 222, so that the third control module 222 passes current to the coil of the third relay 221, thereby prompting the contacts of the third relay 221 to close.

[0102] Accordingly, in step S203 , the step of controlling the third switch circuit 220 to disconnect may specifically include: stopping outputting the third control signal to the third control module 222 so that no current flows through the coil of the third relay 221 , thereby causing the contacts of the third relay 221 to disconnect.

[0103] In some embodiments, the fourth switch circuit 230 includes a fourth relay 231 and a fourth control module 232 , the output end of the fourth control module 232 is connected to the coil of the fourth relay 231 , and the input end of the fourth control module 232 is connected to the fourth output end OUT4 of the second control device 250 .

[0104] In these embodiments, in step S204, the step of controlling the fourth switch circuit of the charging device 200 to be turned on may specifically include: outputting a fourth control signal to the fourth control module 232, so that the fourth control module 232 passes current to the coil of the fourth relay 231, thereby prompting the contacts of the fourth relay 231 to close.

[0105] In some embodiments, the charging device 200 further includes a fifth switching circuit, which is connected in series between the input end of the charging voltage output module 240 and the AC power output end, and the fifth output end OUT5 of the second control device 250 is connected to the control end of the fifth switching circuit.

[0106] In these embodiments, after delaying the first preset time, the charging method provided in the embodiments of the present application further includes:

[0107] The fifth switch circuit is controlled to be turned on to connect the input end of the charging voltage output module 240 to the mains power output end.

[0108] In some embodiments, the charging device 200 further includes a power conversion module 270 and a micro switch SQ1 connected in series between the AC power output terminal and the power input terminal of the second control device 250. The micro switch SQ1 is configured to close after the charging contact 210 contacts the charged contact 110 of the electrical device. The power-on signal is generated after the micro switch SQ1 is closed.

[0109] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0110] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0111] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, m and / or n can represent: m exists alone, m and n exist simultaneously, and n exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0112] In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two).

[0113] The above description is only a specific embodiment of the present application. Those skilled in the art will clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the scope of protection of the present application.

Claims

1. An electrical device capable of being charged by a charging device, the charging device comprising charging contacts, wherein: The electrical device comprises a charged contact, a first switch circuit, a second switch circuit, a voltage detection circuit, a battery and a first control device. The charged contact, the first switch circuit, the voltage detection circuit and the input end of the first control device are electrically connected, and the first output end of the first control device is electrically connected to the control end of the first switch circuit; the charged contact, the second switch circuit and the battery are electrically connected, and the second output end of the first control device is electrically connected to the control end of the second switch circuit; and The charged contact is configured to receive a detection voltage, and the detection voltage is output by a charging contact of a charging device connected to the electrical device; the first control device is configured to control the first switch circuit to be turned on after receiving a charging instruction, and to control the first switch circuit to be turned off and the second switch circuit to be turned on after receiving a detection voltage signal output by the voltage detection circuit, and the detection voltage signal is generated after the detection voltage is passed into the voltage detection circuit.

2. The electrical equipment according to claim 1, wherein: The first switch circuit includes a first relay and a first control module, the output end of the first control module is connected to the coil of the first relay, and the input end of the first control module is connected to the first output end of the first control device.

3. The electrical equipment according to claim 2, wherein: The voltage detection circuit includes a first voltage-dividing resistor, a second voltage-dividing resistor and a voltage follower. The first voltage-dividing resistor and the second voltage-dividing resistor are connected in series with the contacts of the first relay. The input end of the voltage follower is connected between the first voltage-dividing resistor and the second voltage-dividing resistor. The output end of the voltage follower is connected to the input end of the first control device.

4. The electrical equipment according to claim 1, wherein: The second switch circuit includes a second relay and a second control module, the output end of the second control module is connected to the coil of the second relay, and the input end of the second control module is connected to the second output end of the first control device.

5. A charging device for charging the electrical device according to any one of claims 1 to 4, wherein: The charging device includes a charging contact, a third switch circuit, a fourth switch circuit, a detection voltage output module, a charging voltage output module and a second control device. The charging contact, the third switch circuit and the output end of the detection voltage output module are electrically connected, and the third output end of the second control device is electrically connected to the control end of the third switch circuit; the charging contact, the fourth switch circuit and the output end of the charging voltage output module are electrically connected, and the fourth output end of the second control device is electrically connected to the control end of the fourth switch circuit; The detection voltage output module is configured to provide a detection voltage; The second control device is configured to control the third switch circuit to be turned on after receiving a power-on signal to output the detection voltage through the charging contact, and to control the third switch circuit to be turned off and control the fourth switch circuit to be turned on after controlling the third switch circuit to be turned on for a first preset time period, and the power-on signal is generated after the charging contact contacts the charged contact of the electrical device.

6. The charging device according to claim 5, wherein: The third switch circuit includes a third relay and a third control module, the output end of the third control module is connected to the coil of the third relay, and the input end of the third control module is connected to the third output end of the second control device.

7. The charging device according to claim 5, wherein: The fourth switch circuit includes a fourth relay and a fourth control module, the output end of the fourth control module is connected to the coil of the fourth relay, and the input end of the fourth control module is connected to the fourth output end of the second control device.

8. The charging device according to claim 5, wherein: Also includes: a fifth switch circuit connected in series between the input end of the charging voltage output module and the mains output end, wherein the fifth output end of the second control device is connected to the control end of the fifth switch circuit; and The second control device is further configured to control the fifth switch circuit to be turned on after controlling the third switch circuit to be turned on for the first preset time period.

9. The charging device according to claim 5, wherein: Also includes: The power conversion module and the micro switch are connected in series between the mains output terminal and the power input terminal of the second control device in sequence. The micro switch is configured to close after the charging contacts come into contact with the charged contacts of the electrical equipment, so as to generate the power-on signal at the power input terminal of the second control device.

10. A charging system, wherein: It comprises an electric device according to any one of claims 1-4 and a charging device according to any one of claims 5-9.

11. A method for charging an electric device according to any one of claims 1 to 4, wherein: The charging method comprises: In response to the received charging instruction, controlling the first switch circuit of the electric device to be turned on so as to connect the charged contact of the electric device to the voltage detection circuit of the electric device; After receiving the detection voltage signal output by the voltage detection circuit, the first switch circuit is controlled to be disconnected and the second switch circuit of the electrical device is controlled to be turned on, so as to connect the charged contact to the battery of the electrical device. The detection voltage signal is generated after the detection voltage is passed into the voltage detection circuit, and the detection voltage is output by the charging contacts of the charging device connected to the electrical device.

12. The charging method according to claim 11, wherein: The first switch circuit includes a first relay and a first control module, the output end of the first control module is connected to the coil of the first relay, and the input end of the first control module is connected to the first output end of the first control device; The controlling the first switch circuit of the electric device to be turned on comprises: A first control signal is output to the first control module, so that the first control module supplies current to the coil of the first relay, thereby causing the contact of the first relay to close.

13. The charging method according to claim 11, wherein: The second switch circuit includes a second relay and a second control module, the output end of the second control module is connected to the coil of the second relay, and the input end of the second control module is connected to the second output end of the first control device; The controlling the second switch circuit of the electric device to be turned on comprises: A second control signal is output to the second control module, so that the second control module supplies current to the coil of the second relay, thereby causing the contacts of the second relay to close.

14. The charging method according to claim 11, wherein: After controlling the second switch circuit of the electric device to be turned on so as to connect the charged contact to the battery of the electric device, the charging method further includes: continuously reading the status of the battery through the communication interface of the battery; and Determine whether the battery is in a charging state within a second preset time period; if so, control the second switch circuit to remain in an on state; if not, control the second switch circuit to be off.

15. A charging method for a charging device according to any one of claims 5 to 9, wherein: The charging method comprises: Acquiring a power-on signal, wherein the power-on signal is generated after a charging contact of the charging device contacts a charged contact of an electric device; controlling the third switch circuit of the charging device to be turned on so as to output the detection voltage provided by the detection voltage output module of the charging device through the charging contact; and After delaying for a first preset time, the third switch circuit is controlled to be disconnected, and the fourth switch circuit of the charging device is controlled to be turned on, so as to connect the charging contact to the output end of the charging voltage output module of the charging device.

16. The charging method according to claim 15, wherein: The third switch circuit comprises a third relay and a third control module, the output end of the third control module is connected to the coil of the third relay, and the input end of the third control module is connected to the third output end of the second control device; The controlling the third switch circuit of the charging device to be turned on comprises: A third control signal is output to the third control module, so that the third control module supplies current to the coil of the third relay, thereby causing the contact of the third relay to close.

17. The charging method according to claim 15, wherein: The fourth switch circuit comprises a fourth relay and a fourth control module, the output end of the fourth control module is connected to the coil of the fourth relay, and the input end of the fourth control module is connected to the fourth output end of the second control device; The controlling the fourth switch circuit of the charging device to be turned on comprises: A fourth control signal is output to the fourth control module, so that the fourth control module supplies current to the coil of the fourth relay, thereby causing the contact of the fourth relay to close.

18. The charging method according to claim 15, wherein: The charging device further includes a fifth switch circuit, which is connected in series between the input end of the charging voltage output module and the mains output end, and the fifth output end of the second control device is connected to the control end of the fifth switch circuit; After the delay of the first preset time length, the charging method further includes: The fifth switch circuit is controlled to be turned on to connect the input end of the charging voltage output module to the mains power output end.

19. The charging method according to claim 15, wherein: The charging device also includes a second control device, and a power conversion module and a micro switch connected in series between the mains output terminal and the power input terminal of the second control device. The micro switch is configured to close after the charging contacts come into contact with the charged contacts of the electrical device, and the power-on signal is generated after the micro switch is closed.

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