Charging device and vehicle

Abstract

The charging device is connected with a power supply through a power supply access module, detects the type of the power supply accessed to the power supply access module through a power supply detection module, and controls the communication state between the type of the accessed power supply and a power battery through a switch module, so that when a first power supply is accessed, the first power supply is switched on; when the first power supply is connected, the output first direct current can directly supply power to the power battery, and when the second power supply is connected, the output first direct current is boosted and rectified to supply power to the power battery; therefore, the charging device can adjust the strategy of charging the power battery according to the type of the connected power supply, so that the charging device not only can ensure the reliability of charging the power battery, but also can adapt to different power supplies, the adaptability of charging the power battery is improved, and the travel convenience of the vehicle is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a charging device and a vehicle. Background Art

[0002] As new energy vehicles have increasingly longer requirements for battery life and shorter charging times, the problem of charging adaptability of new energy vehicles arises. Currently installed charging piles include 400V platforms and 800V platforms, among which the 400V platform cannot charge 800V vehicles.

[0003] Therefore, current new energy vehicles either use 800V platform charging piles to recharge the power battery, or arrange an independent DC / DC module on the vehicle to recharge the power battery after boosting the voltage through a 400V platform charging pile. As a result, existing new energy vehicles cannot adapt well to different charging piles when charging, which affects the convenience of vehicle travel. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention aims to provide a charging device and a vehicle.

[0005] The present invention proposes a charging device, which utilizes a power access module to connect to a power source, utilizes a power detection module to detect the type of power source connected to the power access module, and utilizes a switch module to control the connectivity between the connected power source type and the power battery, so that when a first power source is connected, the first direct current outputted by it can directly power the power battery, and when a second power source is connected, the first direct current outputted by it is boosted and rectified to power the power battery; thus, the charging device can adjust the strategy for charging the power battery according to the type of power source connected, so that the charging device can not only ensure the reliability of charging the power battery, but also adapt to different power sources, improve the adaptability of charging the power battery, and thus ensure the travel convenience of the vehicle.

[0006] Therefore, a second object of the present invention is to provide a vehicle.

[0007] To achieve the above objectives, the first aspect of the present invention discloses a charging device, comprising: a power access module, the power access module being connected to a first power source or a second power source, wherein the first power source outputs a first direct current, the second power source outputs a second direct current, and the voltage of the first direct current is greater than the charging voltage of a power battery, and the voltage of the second direct current is less than or equal to the charging voltage of the power battery; a power detection module, the power detection module being connected to the power access module, the power detection module being configured to detect the type of power source connected to the power access module; and a switch module, the switch module being connected to the power detection module and the power battery, the switch module controlling the connection state between the connected power source type and the power battery, wherein, when the connected power source type is the first power source, the switch module controls the first power source to connect to the power battery so as to transmit the first direct current to the power battery for powering the power battery; and when the connected power source type is the second power source, the switch module controls the second power source to connect to the power battery so as to transmit the boosted and rectified second direct current to the power battery for powering the power battery.

[0008] According to the charging device of the present invention, a power access module is used to connect to a power source, a power detection module is used to detect the type of power source connected to the power access module, and a switch module is used to control the connectivity between the connected power source type and the power battery, so that when the first power source is connected, the first direct current outputted by it can directly power the power battery, and when the second power source is connected, the first direct current outputted by it is boosted and rectified to power the power battery; thus, the charging device can adjust the strategy for charging the power battery according to the type of power source connected, so that the charging device can not only ensure the reliability of charging the power battery, but also adapt to different power sources, improve the adaptability of charging the power battery, and thus ensure the travel convenience of the vehicle.

[0009] In addition, the charging device of the present invention may also have the following additional technical features:

[0010] In some examples, the charging device further includes: a boost module, which is connected to the power detection module and is used to boost the second DC power; a rectifier module, which is connected to the boost module and the power battery and is used to rectify the boosted second DC power to obtain the boosted and rectified second DC power.

[0011] In some examples, the switch module includes: a first switch, one end of the first switch is connected to the first end of the power detection module, and the other end of the first switch is connected to the negative electrode of the power battery; a second switch, one end of the second switch is connected to the second end of the power detection module, and the other end of the second switch is connected to the positive electrode of the power battery; a third switch, one end of the third switch is connected to the second end of the power detection module, and the other end of the third switch is connected to the input end of the boost module.

[0012] In some examples, the charging device further includes: a controller, the controller being used to control the on / off states of the first switch, the second switch, and the third switch, the controller being used to: when the first power source is connected to the power access module, control the first switch and the second switch to be turned on, and control the third switch to be turned off, so as to deliver the first DC power to the power battery to power the power battery; when the second power source is connected to the power access module, control the first switch and the third switch to be turned on, and control the second switch to be turned off, so as to deliver the second DC power after boosting and rectification to the power battery to power the power battery.

[0013] In some examples, the power detection module is used to detect a first target voltage, which is the maximum voltage of the power supply connected to the power access module; the controller is also used to identify the magnitude of the first target voltage and the second target voltage, wherein the second target voltage is the maximum voltage when the power battery is fully charged, and the controller is used to: when the first target voltage is greater than the second target voltage, determine that the power supply connected to the power access module is the first power supply; when the first target voltage is not greater than the second target voltage, determine that the power supply connected to the power access module is the second power supply.

[0014] In some examples, the controller is also used to: when the first power supply is connected to the power access module, control the first power supply to supply power to the power battery at a first target charging power, wherein the first target charging power is the minimum of the maximum output charging power of the first power supply and the maximum charging power of the power battery; when the second power supply is connected to the power access module, control the second power supply to supply power to the power battery at a second target charging power, wherein the second target charging power is the minimum of the maximum output charging power of the second power supply, the maximum operating power of the boost module and the maximum charging power of the power battery.

[0015] In some examples, the boost module is integrated into a fuel cell of a vehicle, an input end of the boost module is connected to a fuel cell stack, and an output end of the boost module is connected to the rectifier module.

[0016] In some examples, a diode is provided in the fuel cell, an anode of the diode is connected to the positive electrode of the fuel cell stack, and a cathode of the diode is connected to the input end of the boost module and the switch module.

[0017] To achieve the above-mentioned purpose, the second aspect of the present invention discloses a vehicle, comprising the charging device described in the first aspect of the present invention.

[0018] According to the vehicle of the present invention, the charging device it includes is connected to the power supply by using a power access module, detects the type of power supply connected to the power access module by using a power detection module, and controls the connectivity between the connected power type and the power battery by using a switch module, so that when the first power supply is connected, the first direct current output by it can directly power the power battery, and when the second power supply is connected, the first direct current output by it is boosted and rectified to power the power battery; thus, the charging device can adjust the strategy of charging the power battery according to the type of power supply connected, so the charging device can not only ensure the reliability of charging the power battery, but also adapt to different power supplies, improve the adaptability of charging the power battery, and thus ensure the travel convenience of the vehicle.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a schematic structural diagram of a charging device according to an embodiment of the present utility model;

[0022] Figure 2 is a schematic structural diagram of a charging device according to another embodiment of the present utility model;

[0023] Figure 3 is a structural schematic diagram of a charging device according to another embodiment of the present utility model;

[0024] Figure 4 is a schematic structural diagram of a charging device according to another embodiment of the present utility model;

[0025] Figure 5 It is a structural schematic diagram of a charging device according to a specific embodiment of the utility model;

[0026] Figure 6 is a flow chart of a charging method according to a specific embodiment of the present utility model;

[0027] Figure 7 It is a flow chart of a charging method according to one embodiment of the present invention.

[0028] Reference numerals:

[0029] Charging device 100; power access module 110; power detection module 120; switch module 130; boost module 140; rectifier module 150; controller 160; first switch 1301; second switch 1302; and third switch 1303. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0031] Reference below Figure 1-Figure 7 A charging device, a DC-DC converter, and a vehicle according to embodiments of the present invention are described.

[0032] Figure 1 FIG. 1 is a schematic diagram of a charging device according to an embodiment of the present invention. The charging device can be applied to electric vehicles or hybrid vehicles, for example. Figure 1 As shown, the charging device 100 includes: a power supply access module 110, which is connected to a first power supply or a second power supply, wherein the first power supply outputs a first direct current (DC) and the second power supply outputs a second DC. The voltage of the first DC is greater than the charging voltage of the power battery, and the voltage of the second DC is less than or equal to the charging voltage of the power battery; a power supply detection module 120, which is connected to the power supply access module 110 and is used to detect the type of power supply connected to the power supply access module 110; and a switch module 130, which is connected to the power supply detection module 120 and the power battery. The switch module 130 controls the connection between the connected power supply type and the power battery. When the connected power supply type is the first power supply, the switch module 130 controls the first power supply to connect to the power battery to transmit the first DC power to the power battery for powering the power battery. When the connected power supply type is the second power supply, the switch module 130 controls the second power supply to connect to the power battery to transmit the boosted and rectified second DC power to the power battery for powering the power battery.

[0033] In a specific embodiment, the power access module 110 is, for example, a charging socket of a vehicle, and the power detection module 120 can be integrated into the charging socket of the vehicle. The power access module 110 is connected to an external power supply for power supply, and the power detection module 120 detects the type of power supply connected to the power access module. The power supply connected to the power access module 110 is a charging pile, the charging voltage of the power battery is, for example, 800V, the first power supply is, for example, an 800V charging pile, and the second power supply is, for example, a 400V charging pile. The voltage of the first DC power output by the first power supply is, for example, 800V, and the voltage of the second DC power output by the second power supply is, for example, 400V; the switch module 130 controls the connection status between the connected power type and the power battery. When the connected power type is the first power supply, the switch module 130 controls the first power supply to connect with the power battery to transmit the first DC power to the power battery for powering it. When the connected power type is the second power supply, the switch module 130 controls the second power supply to connect with the power battery to transmit the second DC power after boosting and rectification to the power battery for powering it.

[0034] Specifically, the charging device 100 uses the power access module 110 to connect to the power source, uses the power detection module 120 to detect the type of power source connected to the power access module 110, and uses the switch module 130 to control the connectivity between the connected power source type and the power battery, so that when the first power source is connected, the first DC power output by it can directly power the power battery, and when the second power source is connected, the first DC power output by it is boosted and rectified to power the power battery; thus, the charging device 100 can adjust the strategy of charging the power battery according to the type of connected power source. Therefore, the charging device 100 can not only ensure the reliability of charging the power battery, but also adapt to different power sources, improve the adaptability of charging the power battery, and thus ensure the convenience of vehicle travel.

[0035] Figure 2 : is a schematic structural diagram of a charging device according to another embodiment of the present utility model. In one embodiment of the present utility model, Figure 2 As shown, the charging device 100 also includes a boost module 140, which is connected to the power detection module 120 and is used to boost the second DC power; a rectifier module 150, which is connected to the boost module 140 and the power battery and is used to rectify the boosted second DC power to obtain the boosted and rectified second DC power.

[0036] In a specific embodiment, the boost module 140 is, for example, a boost DC / DC converter, the rectifier module 150 is, for example, a bridge rectifier circuit, the charging voltage of the power battery is, for example, 800V, the second power supply is, for example, a 400V charging pile, and the voltage of the second DC power output by the second power supply is, for example, 400V. The second DC power output by the second power supply is boosted by the boost module 140 and rectified by the rectifier module 150 in sequence to provide a charging voltage for the power battery.

[0037] Specifically, when the second power source is connected, the charging device 100 first boosts the second DC power output by the second power source through the boost module 140, and then rectifies the boosted second DC power through the rectifier module 150, thereby not only ensuring that the second DC power output by the second power source provides a charging voltage for the power battery, but also ensuring the stability of the charging voltage, thereby ensuring the safety of the charging process.

[0038] Figure 3 : is a schematic structural diagram of a charging device according to another embodiment of the present utility model. In one embodiment of the present utility model, Figure 3 As shown, the switch module 130 includes: a first switch 1301, one end of the first switch 1301 is connected to the first end of the power detection module 120, and the other end of the first switch 1301 is connected to the negative electrode of the power battery; a second switch 1302, one end of the second switch 1302 is connected to the second end of the power detection module 120, and the other end of the second switch 1302 is connected to the positive electrode of the power battery; a third switch 1303, one end of the third switch 1303 is connected to the second end of the power detection module 120, and the other end of the third switch 1303 is connected to the input end of the boost module 140.

[0039] In a specific embodiment, the switch module 130 includes: a first switch 1301, a second switch 1302 and a third switch 1303. The first switch 1301, the second switch 1302 and the third switch 1303 control the connection status between the connected power type and the power battery. Specifically, when the first switch 1301 and the second switch 1302 are turned on and the third switch 1303 is turned off, the connected power source and the power detection module 120 are directly connected to the power battery. When the first switch 1301 and the third switch 1303 are turned on and the second switch 1302 is turned off, the connected power source and the power detection module 120 are connected to the power battery through the boost module 140 and the rectifier module 150.

[0040] Specifically, the switch module 130 is provided with a first switch 1301, a second switch 1302 and a third switch 1303. By controlling the conduction state of the first switch 1301, the second switch 1302 and the third switch 1303, the connection state between the connected power source type and the power battery can be controlled, thereby helping the charging device 100 to adjust the charging strategy for the power battery according to the type of connected power source.

[0041] Figure 4 : is a schematic structural diagram of a charging device according to another embodiment of the present utility model. In one embodiment of the present utility model, Figure 4 As shown, the charging device 100 also includes a controller 160, which is used to control the on / off state of the first switch 1301 and the second switch 1302. The controller 160 is used to: when the first power source is connected to the power access module 110, control the first switch 1301 and the second switch 1302 to be turned on, and control the third switch 1303 to be turned off, so as to transmit the first DC power to the power battery to power the power battery; when the second power source is connected to the power access module 110, control the first switch 1301 and the third switch 1303 to be turned on, and control the second switch 1302 to be turned off, so as to transmit the second DC power after boosting and rectification to the power battery to power the power battery.

[0042] In a specific embodiment, when the first power source is connected to the power access module 110, the controller 160 controls the first switch 1301 and the second switch 1302 to be turned on, and controls the third switch 1303 to be turned off, so as to transmit the first DC power to the power battery to power the power battery; when the second power source is connected to the power access module 110, the controller 160 controls the first switch 1301 and the third switch 1303 to be turned on, and controls the second switch 1302 to be turned off, so as to transmit the second DC power after boosting and rectification to the power battery to power the power battery.

[0043] Specifically, the charging device 100 is provided with a controller 160, which controls the on-off state of the first switch 1301 and the second switch 1302 according to the type of connected power source, thereby controlling the connectivity between the connected power source type and the power battery, thereby enabling the charging device 100 to adjust the strategy for charging the power battery according to the type of connected power source, thereby ensuring that the charging device 100 can not only ensure the reliability of charging the power battery, but also adapt to different power sources, improve the adaptability of charging the power battery, and thus ensure the convenience of vehicle travel.

[0044] In one embodiment of the present invention, the power detection module 120 is used to detect a first target voltage, which is the maximum voltage of the power supply connected to the power access module 110; the controller 160 is also used to identify the magnitude of the first target voltage and the second target voltage, wherein the second target voltage is the maximum voltage when the power battery is fully charged, and the controller 160 is used to: when the first target voltage is greater than the second target voltage, determine that the power supply connected to the power access module 110 is the first power supply; when the first target voltage is not greater than the second target voltage, determine that the power supply connected to the power access module 110 is the second power supply.

[0045] It is not difficult to understand that comparing the sizes of two parameters is a routine function of the controller. In this embodiment, the maximum voltage of the power battery when it is fully charged is a pre-calibrated parameter and can be read directly by the controller. Therefore, when the controller 160 is used in this embodiment to identify the sizes of the first target voltage and the second target voltage, it is implemented based on the routine functions of conventional controllers in this field and does not involve any improvement to the control logic of conventional controllers in this field.

[0046] In a specific embodiment, the charging voltage of the power battery is, for example, 800V, the first power supply is, for example, an 800V charging pile, the second power supply is, for example, a 400V charging pile, the voltage of the first DC power output by the first power supply is, for example, 800V, and the voltage of the second DC power output by the second power supply is, for example, 400V.

[0047] When the power detection module 120 detects that the maximum voltage of the power supply connected to the power access module 110 is greater than the maximum voltage of the power battery when it is fully charged, that is, the first target voltage is greater than the second target voltage, the controller 160 determines that the power supply connected to the power access module 110 is the first power supply.

[0048] When the power detection module 120 detects that the maximum voltage of the power supply connected to the power access module 110 is less than or equal to the maximum voltage of the power battery when it is fully charged, that is, the first target voltage is less than or equal to the second target voltage, the controller 160 determines that the power supply connected to the power access module 110 is the second power supply.

[0049] Specifically, the charging device 100 detects the maximum voltage of the power supply connected to the power access module 110 through the power detection module 120, which is recorded as the first target voltage, and the maximum voltage when the power battery is fully charged is recorded as the second target voltage. The controller 160 can determine the type of power supply connected to the power access module 110 by comparing the first target voltage and the second target voltage. This helps the controller 160 to subsequently control the connectivity between the connected power type and the power battery according to the connected power type, thereby ensuring that the charging device 100 can not only ensure the reliability of charging the power battery, but also adapt to different power sources, improve the adaptability of charging the power battery, and thus ensure the convenience of vehicle travel.

[0050] In one embodiment of the present utility model, the controller 160 is also used to: when the first power supply is connected to the power access module 110, control the first power supply to supply power to the power battery at a first target charging power, wherein the first target charging power is the minimum value between the maximum output charging power of the first power supply and the maximum charging power of the power battery; when the second power supply is connected to the power access module 110, control the second power supply to supply power to the power battery at a second target charging power, wherein the second target charging power is the minimum value between the maximum output charging power of the second power supply, the maximum operating power of the boost module 140 and the maximum charging power of the power battery.

[0051] It is not difficult to understand that reading known parameters and comparing the sizes of parameters are routine functions of the controller. In this embodiment, the maximum output charging power of the first power supply, the maximum output charging power of the second power supply, the maximum charging power of the power battery and the maximum operating power of the boost module 140 are all pre-calibrated parameters and can be read directly by the controller. Therefore, in this embodiment, when the controller 160 is used to determine the first target charging power and control the first power supply to supply power to the power battery with the first target charging power, or when the controller 160 is used to determine the second target charging power and control the second power supply to supply power to the power battery with the second target charging power, it is implemented based on the routine functions of conventional controllers in this field and does not involve improvements to the control logic of conventional controllers in this field.

[0052] In a specific embodiment, when a first power source is connected to the power access module 110, the controller 160 controls the power supply to the power battery with the minimum value between the maximum output charging power of the first power source and the maximum charging power of the power battery; when a second power source is connected to the power access module 110, the controller 160 controls the power supply to the power battery with the minimum value between the maximum output charging power of the second power source, the maximum operating power of the boost module 140 and the maximum charging power of the power battery.

[0053] Specifically, the charging device 100 controls the charging power through the controller 160 to ensure that the charging efficiency is ensured while preventing damage to the electrical appliance due to excessive charging power, thereby ensuring the safety of the charging process.

[0054] In one embodiment of the present invention, the boost module 140 is integrated into the fuel cell of the vehicle, the input end of the boost module 140 is connected to the fuel cell stack, and the output end of the boost module 140 is connected to the rectifier module 150 .

[0055] In a specific embodiment, the boost module 140 is, for example, a boost DC / DC converter. The input end of the boost module 140 is connected to the fuel cell stack. When the fuel cell operates normally, the fuel cell stack generates electricity and the voltage is raised by the boost DC / DC converter to supply power to the high-voltage load of the fuel cell, while also providing a high-voltage energy source for the entire vehicle.

[0056] Specifically, the charging device 100 integrates the boost module 140 into the fuel cell of the vehicle, which helps to reduce the volume of the charging device 100 and reduce the cost, thereby improving the practicality of the charging device 100.

[0057] In one embodiment of the present invention, a diode is provided in the fuel cell, the anode of the diode is connected to the positive electrode of the fuel cell stack, and the cathode of the diode is connected to the input end of the boost module 140 and the switch module 130 .

[0058] In a specific embodiment, the boost module 140 is, for example, a boost DC / DC converter. The input end of the boost module 140 is connected to the fuel cell stack through a diode, the anode of the diode is connected to the positive pole of the stack, and the cathode of the diode is connected to the input end of the boost module 140 and the switch module 130. When the fuel cell operates normally, the fuel cell stack generates electricity and the voltage is raised by the boost DC / DC converter to supply power to the high-voltage load of the fuel cell, while also providing a high-voltage energy source for the entire vehicle. The diode ensures that the current does not flow backwards and cause damage to the fuel cell.

[0059] Specifically, the charging device 100 can ensure that no damage is caused to the fuel cell by disposing a diode between the fuel cell stack and the boost module 140, thereby ensuring the safety of the charging process.

[0060] Figure 5 This is a schematic diagram of the structure of a charging device according to a specific embodiment of the present utility model. Figure 5In the specific embodiment shown, the power access module 110 is a charging socket, the power detection module 120 is integrally arranged on the charging socket, the power battery is an 800V power battery, the first power source is an 800V charging pile, the second power source is a 400V charging pile, the first switch 1301 is K1, the second switch 1302 is K2, the third switch 1303 is K3, the boost module 140 is the boost DC module in the fuel cell system, and the controller 160 is BMS (BATTERY MANAGEMENT SYSTEM).

[0061] In this specific embodiment, K1 and K2 are respectively connected to the total negative and total positive of the power battery, and K3 is connected to the input end of the boost DC module in the fuel cell system. When the fuel cell system operates normally, the fuel cell stack of the fuel cell system generates electricity, and after the voltage is boosted by the internal boost DC, it supplies power to the high-voltage load of the fuel cell system and outputs to the high-voltage power distribution unit of the whole vehicle at the same time, providing the high-voltage energy source for the whole vehicle.

[0062] Figure 6 It is a flowchart of a charging method according to a specific embodiment of the present invention. As Figure 6 shown, in this specific embodiment, when the whole vehicle replenishes the power battery through the charging pile, the charging gun is connected, the whole vehicle BMS, the fuel cell system and the relevant low-voltage components of the whole vehicle are powered on, and at the same time, the maximum output voltage V1 of the charging pile and the maximum voltage V2 when the power battery is fully charged are obtained.

[0063] The BMS judges whether V1 is greater than V2:

[0064] If V1 > V2, it is confirmed that the current charging pile is a high-voltage 800V platform, and the charging pile can directly charge the power battery. At this time, the BMS controls the high-voltage power distribution unit to control the K1 and K2 switches to close. The BMS judges the magnitude of the rechargeable power P1 of the charger and the allowable charging power P2 of the power battery: if P1 > P2, charge at the P2 power; if P1 < P2, charge at the P1 power.

[0065] If V1 < V2, it is confirmed that the current charging pile is a low-voltage 400V platform. The BMS controls the high-voltage power distribution unit to control the K1 and K3 switches to close, and the charging pile charges the power battery of the whole vehicle through the boost DC module in the fuel cell system. The BMS judges the minimum value of the rechargeable power P1 of the charger, the allowable charging power P2 of the power battery and the maximum power P3 allowed to operate by the fuel cell system, and confirms the charging power P charging = Pmin(P1, P2, P3). The charging pile outputs the maximum voltage V1max output at the P charging power to the input end of the boost DC module in the fuel cell system, and after the voltage is boosted by the boost DC module, it charges the power battery of the whole vehicle through the high-voltage power distribution unit.

[0066] When the BMS charging request power is 0, charging is completed and the charging gun is disconnected.

[0067] In summary, the charging device 100 uses the power access module 110 to connect to the power source, uses the power detection module 120 to detect the type of power source connected to the power access module 110, and uses the switch module 130 to control the connectivity between the connected power source type and the power battery, so that when the first power source is connected, the first DC power outputted by it can directly power the power battery, and when the second power source is connected, the first DC power outputted by it is boosted and rectified to power the power battery; thus, the charging device 100 can adjust the strategy of charging the power battery according to the type of power source connected, so that the charging device 100 can not only ensure the reliability of charging the power battery, but also adapt to different power sources, improve the adaptability of charging the power battery, and thus ensure the travel convenience of the vehicle.

[0068] Another embodiment of the present invention further provides a vehicle, which includes the charging device 100 described in the above embodiment of the present invention.

[0069] In a specific embodiment, the vehicle includes but is not limited to an electric vehicle, a hybrid vehicle, etc., and the vehicle uses the above-mentioned charging device 100 to charge the vehicle's power battery.

[0070] The specific implementation of the vehicle is similar to the specific implementation of the above-mentioned charging device 100. Therefore, the specific implementation details of the vehicle can be found in the above-mentioned specific implementation of the charging device 100. To reduce redundancy, they are not repeated here.

[0071] According to the vehicle of the embodiment of the present invention, the charging device 100 included therein utilizes a power access module 110 to connect to a power source, utilizes a power detection module 120 to detect the type of power source connected to the power access module 110, and utilizes a switch module 130 to control the connectivity between the type of power source connected and the power battery, so that when a first power source is connected, the first direct current outputted by it can directly power the power battery, and when a second power source is connected, the first direct current outputted by it is boosted and rectified to power the power battery; thus, the charging device 100 can adjust the strategy for charging the power battery according to the type of power source connected, so that the charging device 100 can not only ensure the reliability of charging the power battery, but can also adapt to different power sources, improve the adaptability of charging the power battery, and thereby ensure the convenience of vehicle travel.

[0072] According to the charging device 100 of the present invention, the following charging method is implemented: Figure 7 FIG. 1 is a flow chart of a charging method according to an embodiment of the present invention. Figure 7 As shown, the charging method includes:

[0073] Step S1: The power detection module determines the type of power connected to the power access module.

[0074] Step S2: When the first power source is connected to the power access module, the first switch and the second switch are controlled to be turned on, and the third switch is controlled to be turned off, so as to transmit the first direct current to the power battery to supply power to the power battery.

[0075] Step S3: When the second power source is connected to the power access module, the first switch and the third switch are controlled to be turned on, and the second switch is controlled to be turned off, so as to transmit the boosted and rectified second DC power to the power battery to supply power to the power battery.

[0076] In one embodiment of the present invention, step S1 of determining the type of power source connected to the power access module includes:

[0077] Step S11: determining the maximum voltage of the power source connected to the power access module as a first target voltage, and determining the maximum voltage of the power battery when fully charged as a second target voltage.

[0078] Step S12: When the first target voltage is greater than the second target voltage, determining that the power source connected to the power access module is the first power source.

[0079] Step S13: When the first target voltage is not greater than the second target voltage, determining that the power source connected to the power access module is the second power source.

[0080] In one embodiment of the present invention, step S2 further includes: determining the minimum value between the maximum output charging power of the first power source and the maximum charging power of the power battery as the first target charging power, and controlling the power supply to the power battery at the first target charging power.

[0081] In one embodiment of the present invention, step S3 also includes: determining the minimum value among the maximum output charging power of the second power supply, the maximum operating power of the boost module and the maximum charging power of the power battery as the second target charging power, and controlling the power supply to the power battery at the second target charging power.

[0082] Specifically, the charging method according to the embodiment of the present invention is used for the above-mentioned charging device, which uses a power access module to connect to the power source, uses a power detection module to detect the type of power source connected to the power access module, and uses a switch module to control the connectivity between the connected power source type and the power battery, so that when the first power source is connected, the first direct current output by it can directly power the power battery, and when the second power source is connected, the first direct current output by it is boosted and rectified to power the power battery; thus, the charging device can adjust the strategy of charging the power battery according to the type of power source connected, so the charging device can not only ensure the reliability of charging the power battery, but also adapt to different power sources, improve the adaptability of charging the power battery, and thus ensure the convenience of vehicle travel.

[0083] In addition, other structures and functions of the vehicle according to the above embodiments of the present invention are well known to ordinary technicians in this field and will not be described in detail to reduce redundancy.

[0084] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0085] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0086] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A charging device, characterized in that: include: a power access module, the power access module being connected to a first power source or a second power source, wherein the first power source outputs a first direct current, and the second power source outputs a second direct current, wherein the voltage of the first direct current is greater than the charging voltage of the power battery, and the voltage of the second direct current is less than or equal to the charging voltage of the power battery; A power detection module, connected to the power access module, configured to detect the type of power connected to the power access module; a switch module connected to the power detection module and the power battery, and controlling the connectivity between the connected power type and the power battery; wherein, when the connected power type is the first power source, the switch module controls the first power source to be connected to the power battery so as to transmit the first direct current to the power battery for powering the power battery; and when the connected power type is the second power source, the switch module controls the second power source to be connected to the power battery so as to transmit the boosted and rectified second direct current to the power battery for powering the power battery.

2. The charging device according to claim 1, characterized in that Also includes: a boost module, the boost module being connected to the power detection module and configured to boost the second DC power; A rectifier module is connected to the boost module and the power battery, and is used for rectifying the boosted second DC power to obtain the boosted and rectified second DC power.

3. The charging device according to claim 2, characterized in that The switch module includes: a first switch, one end of the first switch being connected to the first end of the power detection module, and the other end of the first switch being connected to the negative electrode of the power battery; a second switch, one end of the second switch being connected to the second end of the power detection module, and the other end of the second switch being connected to the positive electrode of the power battery; A third switch, one end of the third switch is connected to the second end of the power detection module, and the other end of the third switch is connected to the input end of the boost module.

4. The charging device according to claim 3, characterized in that Also includes: A controller is used to control the on and off states of the first switch, the second switch, and the third switch.

5. The charging device according to claim 4, characterized in that The controller is used to: When the first power source is connected to the power access module, the first switch and the second switch are controlled to be turned on, and the third switch is controlled to be turned off, so as to transmit the first direct current to the power battery to supply power to the power battery; When the second power source is connected to the power access module, the first switch and the third switch are controlled to be turned on, and the second switch is controlled to be turned off, so as to transmit the boosted and rectified second DC power to the power battery to supply power to the power battery.

6. The charging device according to claim 4, characterized in that The power detection module is used to detect a first target voltage, where the first target voltage is the maximum voltage of the power supply connected to the power access module; The controller is further configured to identify the magnitude of the first target voltage and the second target voltage, wherein the second target voltage is the maximum voltage of the power battery when it is fully charged. The controller is configured to: When the first target voltage is greater than the second target voltage, determining that the power source connected to the power access module is the first power source; When the first target voltage is not greater than the second target voltage, it is determined that the power source connected to the power access module is the second power source.

7. The charging device according to claim 4, characterized in that The controller is also used to: When the first power source is connected to the power access module, controlling the first power source to supply power to the power battery at a first target charging power, where the first target charging power is the minimum value between the maximum output charging power of the first power source and the maximum charging power of the power battery; When the second power source is connected to the power access module, the second power source is controlled to supply power to the power battery at a second target charging power, where the second target charging power is the minimum value among the maximum output charging power of the second power source, the maximum operating power of the boost module, and the maximum charging power of the power battery.

8. The charging device according to claim 2, characterized in that The boost module is integrated into a fuel cell of a vehicle, an input end of the boost module is connected to the fuel cell stack, and an output end of the boost module is connected to the rectifier module.

9. The charging device according to claim 8, characterized in that A diode is provided in the fuel cell, an anode of the diode is connected to the positive electrode of the fuel cell stack, and a cathode of the diode is connected to the input end of the boost module and the switch module.

10. A vehicle, characterized in that: The device comprises a charging device as described in any one of claims 1 to 9.

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