Vehicle charging device and vehicle

Abstract

The application discloses a vehicle charging device and a vehicle. The vehicle charging device is electrically connected with a vehicle battery module. The vehicle charging device comprises a first charging port, a second charging port, a first switching device, a first switching assembly, a second switching assembly, an energy storage device, a first motor control module and a second motor control module. The first charging port, the first switching assembly, the energy storage device, the first switching device and the first motor control module are sequentially electrically connected to form a first charging loop of the vehicle battery module. The second charging port, the second switching assembly and the second motor control module are sequentially electrically connected to form a second charging loop of the vehicle battery module. Thus, the application realizes double charging port charging of the vehicle. Compared with a traditional scheme of multiplexing inductors, capacitors and other devices of two motor control modules, the application can save some capacitors and other components, realizes simplification of the charging loop, and thus can reduce the hardware cost of the vehicle and reduce the weight of the vehicle.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a vehicle charging device and a vehicle. Background Technology

[0002] To improve vehicle charging speed, related technologies may equip vehicles with two charging ports and two motor control modules. This allows for fast charging by reusing inductors, capacitors, and other components from both motor control modules, in conjunction with the two charging ports. However, reusing these components increases the vehicle's hardware cost. Furthermore, the increased number of potential failure points also raises maintenance complexity and reduces operational stability. Utility Model Content

[0003] This application provides a vehicle charging device and a vehicle.

[0004] This application provides a vehicle charging device that is electrically connected to a vehicle battery module. The vehicle charging device includes a first charging port, a second charging port, a first switching device, a first switching assembly, a second switching assembly, an energy storage device, a first motor control module, and a second motor control module.

[0005] The first charging port, the first switching assembly, the energy storage device, the first switching device, and the first motor control module are sequentially electrically connected to form the first charging circuit of the vehicle battery module;

[0006] The second charging port, the second switch assembly, and the second motor control module are electrically connected in sequence to form the second charging circuit of the vehicle battery module.

[0007] Thus, in this embodiment, the vehicle charging device can be constructed based on a first charging port, a second charging port, a first switching device, a first switching assembly, a second switching assembly, an energy storage device, a first motor control module, and a second motor control module. A first charging circuit for the vehicle battery module can be formed by the sequentially electrically connected first charging port, first switching assembly, energy storage device, first switching device, and first motor control module, and a second charging circuit for the vehicle battery module can be formed by the sequentially electrically connected second charging port, second switching assembly, and second motor control module, thereby achieving dual-port charging for the vehicle. Furthermore, compared to the traditional solution that reuses inductors, capacitors, and other components in two motor control modules, this application can eliminate some capacitors and other components in the traditional solution, simplifying the charging circuit. This reduces the vehicle's hardware cost and overall weight, and avoids vehicle malfunctions or damage caused by capacitors. The potential fault points in the vehicle are reduced, thereby improving vehicle reliability and reducing maintenance difficulty.

[0008] In some embodiments of this application, when the first switching device is closed and the first switching assembly is in a conducting state, the vehicle battery module is charged through the first charging circuit;

[0009] When the second switch assembly is in the ON state, the vehicle battery module is charged through the second charging circuit.

[0010] Thus, in this embodiment of the application, the vehicle battery module can be charged through the first charging circuit when the first switching device is closed and the first switching assembly is in the conducting state, and the vehicle battery module can be charged through the second charging circuit when the second switching assembly is in the conducting state, thereby realizing the charging control of the vehicle battery module.

[0011] In some embodiments of this application, the first switch assembly includes a second switch device and a third switch device. One end of the second switch device and one end of the third switch device are electrically connected to the first charging port. The other end of the second switch device is electrically connected to the energy storage device and the first switch device. The other end of the third switch device is electrically connected to the energy storage device and the vehicle battery module. When both the second switch device and the third switch device are closed, the first switch assembly is in a conducting state. When either the second switch device or the third switch device is open, the first switch assembly is in a cut-off state.

[0012] Thus, in this embodiment, the first switch assembly can be implemented by the second switch device and the third switch device, and the first switch assembly can be in a conducting state when both the second switch device and the third switch device are closed, and in a cut-off state when either the second switch device or the third switch device is open, thereby realizing the conduction and cut-off of the first switch assembly.

[0013] In some embodiments of this application, the second switch assembly includes a fourth switch device and a fifth switch device. One end of the fourth switch device and one end of the fifth switch device are electrically connected to the second charging port. The other end of the fourth switch device is electrically connected to the vehicle battery module, and the other end of the fifth switch device is electrically connected to the second motor control module. When both the fourth and fifth switch devices are closed, the second switch assembly is in a conducting state. When either the fourth or fifth switch device is open, the second switch assembly is in a cut-off state.

[0014] Thus, in this embodiment, the second switch assembly can be implemented by the fourth and fifth switch devices, and the second switch assembly can be in a conducting state when both the fourth and fifth switch devices are closed, and in a cut-off state when either the fourth or fifth switch device is open, thereby realizing the conduction and cut-off of the second switch assembly.

[0015] In some embodiments of this application, the first motor control module includes a first full-bridge circuit and a first energy storage component, and the second motor control module includes a second full-bridge circuit and a second energy storage component. The first switching device, the first energy storage component, and one end of the first full-bridge circuit are sequentially electrically connected, and the other end of the first full-bridge circuit is electrically connected to the vehicle battery module. The second switching device, the second energy storage component, and one end of the second full-bridge circuit are sequentially electrically connected, and the other end of the second full-bridge circuit is electrically connected to the vehicle battery module.

[0016] Thus, in this embodiment, the first motor control module can be implemented through the first full-bridge circuit and the first energy storage component, and the second motor control module can be implemented through the second full-bridge circuit and the second energy storage component. This allows the first switching device, the first energy storage component, and one end of the first full-bridge circuit to be electrically connected in sequence, and the other end of the first full-bridge circuit to be electrically connected to the vehicle battery module. Similarly, the second switching component, the second energy storage component, and one end of the second full-bridge circuit are electrically connected in sequence, and the other end of the second full-bridge circuit to be electrically connected to the vehicle battery module.

[0017] In some embodiments of this application, the first full-bridge circuit includes a plurality of first bridge arms, the first energy storage component includes a plurality of first inductors, each first bridge arm includes a first upper bridge arm switch and a first lower bridge arm switch, the midpoint of each first bridge arm is electrically connected to one end of a first inductor, the other end of each first inductor is electrically connected to the first switching device, each first upper bridge arm switch is electrically connected to one end of the vehicle battery module, and each first lower bridge arm switch is electrically connected to the other end of the vehicle battery module.

[0018] Thus, in this embodiment of the application, the first full-bridge circuit can be implemented by a plurality of first bridge arms including a first upper bridge arm switch and a first lower bridge arm switch, and the first energy storage component can be implemented by a plurality of first inductors. In this way, the midpoint of each first bridge arm is electrically connected to one end of a first inductor, the other end of each first inductor is electrically connected to a first switching device, each first upper bridge arm switch is electrically connected to one end of the vehicle battery module, and each first lower bridge arm switch is electrically connected to the other end of the vehicle battery module.

[0019] In some embodiments of this application, the first full-bridge circuit is configured to switch to a first circuit state or switch between the first circuit state and a second circuit state when the first switching device is closed and the first switching assembly is in a conducting state, so that the vehicle battery module is charged through the first charging circuit.

[0020] Specifically, when at least one of the first upper bridge arm switches of the first bridge arm is turned on and the first lower bridge arm switch is turned off, so that the vehicle battery module is charged through the first charging port, the energy storage device, and the first inductor connected to the first bridge arm, the first full-bridge circuit is in the first circuit state; when at least one of the first upper bridge arm switches of the first bridge arm is turned off and the first lower bridge arm switch is turned on, so that the energy storage device and the first inductor connected to the first bridge arm are charged through the first charging port, the first full-bridge circuit is in the second circuit state.

[0021] Thus, in this embodiment of the application, the first charging circuit can be switched to a first circuit state, or switched between a first circuit state and a second circuit state, thereby realizing the charging of the vehicle battery module.

[0022] In some embodiments of this application, the second full-bridge circuit includes a plurality of second bridge arms, the second energy storage component includes a plurality of second inductors, each second bridge arm includes a second upper bridge arm switch and a second lower bridge arm switch, the midpoint of each second bridge arm is electrically connected to one end of a second inductor, the other end of each second inductor is electrically connected to the second switching component, each second upper bridge arm switch is electrically connected to one end of the vehicle battery module, and each second lower bridge arm switch is electrically connected to the other end of the vehicle battery module.

[0023] Thus, in this embodiment, the second full-bridge circuit can be implemented by a plurality of second bridge arms including a second upper bridge arm switch and a second lower bridge arm switch, and the second energy storage component can be implemented by a plurality of second inductors. In this way, the midpoint of each second bridge arm is electrically connected to one end of a second inductor, the other end of each second inductor is electrically connected to the second switching component, each second upper bridge arm switch is electrically connected to one end of the vehicle battery module, and each second lower bridge arm switch is electrically connected to the other end of the vehicle battery module.

[0024] In some embodiments of this application, the second full-bridge circuit is configured to switch to a third circuit state, or switch between the third circuit state and a fourth circuit state, when the second switching component is in the on state, so that the vehicle battery module can be charged through the second charging circuit.

[0025] Specifically, when at least one of the second upper bridge arm switches is turned on and the second lower bridge arm switch is turned off, so that the vehicle battery module is charged through the second charging port and the second inductor connected to the second bridge arm, the second full-bridge circuit is in the third circuit state. When at least one of the second upper bridge arm switches is turned off and the second lower bridge arm switch is turned on, so that the second inductor connected to the second bridge arm is charged through the second charging port, the second full-bridge circuit is in the fourth circuit state.

[0026] Thus, in this embodiment of the application, the second charging circuit can be switched to the third circuit state, or switched between the third circuit state and the fourth circuit state, thereby realizing the charging of the vehicle battery module.

[0027] In some embodiments of this application, when the pre-charging of the energy storage device is completed, the vehicle battery module is charged through the first charging circuit and / or the second charging circuit.

[0028] Thus, in this embodiment of the application, the vehicle battery module can be charged through the first charging circuit and / or the second charging circuit after the energy storage device has been pre-charged, thereby ensuring that the vehicle battery module can be steadily charged based on the electrical energy provided by the energy storage device during the charging process.

[0029] In some embodiments of this application, the first full-bridge circuit is configured to switch between a fifth circuit state and a sixth circuit state when the first switching device is closed and the first switching assembly is in the off state, so as to precharge the energy storage device.

[0030] Specifically, when the first upper bridge arm switch of at least one first bridge arm is turned on and the first lower bridge arm switch of each first bridge arm is turned off, the first charging circuit is in the fifth circuit state; when the first lower bridge arm switch of at least one first bridge arm is turned on and the first upper bridge arm switch of each first bridge arm is turned off, the first charging circuit is in the sixth circuit state.

[0031] Thus, in this embodiment of the application, the energy storage device can be pre-charged through the vehicle battery module and the first full-bridge circuit that switches between the fifth and sixth circuit states.

[0032] This application provides a vehicle including the vehicle charging device described above.

[0033] The vehicle provided in this application allows the vehicle charging device to be constructed based on a first charging port, a second charging port, a first switching device, a first switching assembly, a second switching assembly, an energy storage device, a first motor control module, and a second motor control module. A first charging circuit for the vehicle battery module is formed by the sequentially electrically connected first charging port, first switching assembly, energy storage device, first switching device, and first motor control module, and a second charging circuit for the vehicle battery module is formed by the sequentially electrically connected second charging port, second switching assembly, and second motor control module, thereby achieving dual-port charging for the vehicle. Furthermore, compared to traditional solutions that reuse inductors, capacitors, and other components in two motor control modules, this application eliminates some capacitors and other components in traditional solutions, simplifying the charging circuit. This reduces vehicle hardware costs and overall vehicle weight, avoids vehicle malfunctions or damage caused by capacitors, reduces potential fault points in the vehicle, thereby improving vehicle reliability and reducing maintenance difficulty.

[0034] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0035] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0036] Figure 1 A schematic diagram of a vehicle charging circuit topology with dual charging ports;

[0037] Figure 2 This is a schematic diagram of a vehicle charging device in some embodiments of this application;

[0038] Figure 3 This is a schematic diagram illustrating application scenarios in some embodiments of this application;

[0039] Figure 4 This is a schematic diagram illustrating application scenarios in some embodiments of this application;

[0040] Figure 5 This is a schematic diagram illustrating application scenarios in some embodiments of this application;

[0041] Figure 6 This is a schematic diagram illustrating application scenarios in some embodiments of this application;

[0042] Figure 7 This is a schematic diagram illustrating application scenarios in some embodiments of this application;

[0043] Figure 8 This is a schematic diagram illustrating application scenarios in some embodiments of this application.

[0044] Figure label:

[0045] 1100 - First charging port, 1200 - Second charging port, 1300 - First switching device, 1400 - First switching assembly, 1410 - Second switching device, 1420 - Third switching device, 1500 - Second switching assembly, 1510 - Fourth switching device, 1520 - Fifth switching device, 1600 - Energy storage device, 1700 - First motor control module, 1710 - First full-bridge circuit, 1711 - First upper bridge arm switch, 1712 - First lower bridge arm switch, 1720 - First energy storage assembly, 1721 - First inductor, 1800 - Second motor control module, 1810 - Second full-bridge circuit, 1811 - Second upper bridge arm switch, 1812 - Second lower bridge arm switch, 1820 - Second energy storage assembly, 1821 - Second inductor, 2000 - Vehicle battery module. Detailed Implementation

[0046] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting the embodiments of this application.

[0047] With the continuous development of the automotive industry, pure electric vehicles, powered by clean energy and characterized by low pollution, low noise, and high energy utilization, are gradually becoming a key focus of the industry. However, with the increasing promotion and application of pure electric vehicles, problems such as long charging queues, low utilization rates of charging stations, and difficulties in profitability for charging operators are becoming increasingly prominent. Understandably, charging is a crucial aspect of using pure electric vehicles, and the charging experience directly impacts users' willingness to purchase and their overall user experience.

[0048] Therefore, to improve vehicle charging efficiency, related technologies provide a vehicle charging circuit topology based on dual charging ports. Please refer to [link / reference needed] for details. Figure 1 , Figure 1 This is a schematic diagram of a charging circuit topology with dual charging ports. This topology can boost the charging voltage of the vehicle battery module by reusing components such as capacitors in the two motor control modules during dual-gun charging.

[0049] However, Figure 1 The charging circuit topology shown overemphasizes safety in its design, resulting in redundancy and a lack of simplification, leading to wasted costs. Furthermore, reusing inductors and capacitors from two motor control modules introduces potential fault points, as these electronic components are prone to failure and damage. This increases the difficulty of vehicle maintenance and operational stability.

[0050] Based on the issues mentioned above, please refer to Figure 2 This application provides a vehicle charging device that is electrically connected to a vehicle battery module 2000. The vehicle charging device includes a first charging port 1100, a second charging port 1200, a first switching device 1300, a first switching assembly 1400, a second switching assembly 1500, an energy storage device 1600, a first motor control module 1700, and a second motor control module 1800. The first charging port 1100, the first switching assembly 1400, the energy storage device 1600, the first switching device 1300, and the first motor control module 1700 are sequentially electrically connected to form a first charging circuit for the vehicle battery module 2000. The second charging port 1200, the second switching assembly 1500, and the second motor control module 1800 are sequentially electrically connected to form a second charging circuit for the vehicle battery module 2000.

[0051] Specifically, to reduce vehicle hardware costs and the probability of vehicle malfunctions due to capacitors and other components, this application provides a dual-charging-port vehicle charging circuit that eliminates the need for a charging port capacitor and a neutral (N) contactor. Specifically, in the vehicle charging device provided by this application, the first charging port 1100, the first switching assembly 1400, the energy storage device 1600, the first switching device 1300, and the first motor control module 1700 are sequentially and electrically connected to form a first charging circuit for the vehicle battery module 2000; the second charging port 1200, the second switching assembly 1500, and the second motor control module 1800 are sequentially and electrically connected to form a second charging circuit for the vehicle battery module 2000. Therefore, in this embodiment, the vehicle battery module 2000 can be charged through a "first charging circuit" formed by sequentially electrically connecting the first charging port 1100, the first switching assembly 1400, the energy storage device 1600, the first switching device 1300, and the first motor control module 1700, or through a first charging circuit formed by sequentially electrically connecting the second charging port 1200, the second switching assembly 1500, and the second motor control module 1800, or through a combination of the first and second charging circuits, thereby achieving boost charging of the vehicle battery module 2000 and high-power charging of the vehicle's dual motors.

[0052] It is worth noting that in the vehicle charging device provided in this application embodiment, an energy storage device 1600 can be combined with two motor control modules to form a first charging circuit and a second charging circuit for the vehicle battery module 2000, compared to Figure 1 Regarding the dual-charging-port vehicle charging circuit topology shown, the embodiment of this application can omit one charging port capacitor, namely the capacitor located to the left of charging port B. Specifically, in Figure 1 In the previous embodiment, a capacitor was provided on the left side of charging port A and the left side of charging port B. However, in this embodiment, an energy storage device 1600 (such as a capacitor) is provided between the first motor control module 1700 and the first charging port 1100, while no energy storage device 1600 is provided between the second motor control module 1800 and the second charging port 1200.

[0053] It is also worth noting that, compared to Figure 1 Regarding the dual-charging-port vehicle charging circuit topology shown, the embodiment of this application can also omit one N-line (Neutral Wire) contactor, namely the switching device located to the left of charging port B. Specifically, Figure 1 There are three switching devices on the left side of the charging port B. In this embodiment of the application, the left side of the second charging port 1200 only includes the second switching assembly 1500 (i.e., two switching devices).

[0054] Therefore, by eliminating the relatively heavy charging port capacitor, the vehicle's hardware costs can be reduced and the overall vehicle weight can be lightened. At the same time, by eliminating one charging port capacitor (i.e., the capacitor to the left of charging port B), vehicle malfunctions or damage caused by the charging port capacitor can be avoided, reducing potential points of failure in the vehicle, thereby improving vehicle reliability and reducing vehicle maintenance difficulty.

[0055] Thus, in this embodiment, the vehicle charging device can be constructed based on a first charging port 1100, a second charging port 1200, a first switching device 1300, a first switching assembly 1400, a second switching assembly 1500, an energy storage device 1600, a first motor control module 1700, and a second motor control module 1800. The first charging circuit of the vehicle battery module 2000 can be formed by the sequentially electrically connected first charging port 1100, first switching assembly 1400, energy storage device 1600, first switching device 1300, and first motor control module 1700, and the second charging circuit of the vehicle battery module 2000 can be formed by the sequentially electrically connected second charging port 1200, second switching assembly 1500, and second motor control module 1800, thereby realizing dual-charging port charging of the vehicle. Furthermore, compared to the traditional solution that reuses inductors, capacitors, and other components in two motor control modules, this application can eliminate some capacitors and other components in the traditional solution, thereby simplifying the charging circuit, reducing vehicle hardware costs and overall vehicle weight, and avoiding vehicle malfunctions or damage caused by capacitors. This reduces potential fault points in the vehicle, thereby improving vehicle reliability and reducing vehicle maintenance difficulty.

[0056] In one example, both the first charging port 1100 and the second charging port 1200 can be plugged into a charging gun to receive electrical energy transmitted by the charging gun.

[0057] In one example, both the first charging port 1100 and the second charging port 1200 are DC charging ports, or in other words, both the first charging port 1100 and the second charging port 1200 can receive DC power input.

[0058] In one example, the first switching device 1300 may be implemented using one or more of a relay, a contactor, an insulated gate bipolar transistor (IGBT), or a metal-oxide-semiconductor field-effect transistor (MOSFET). It is understood that the implementation of the first switching device 1300 can be tailored to specific circumstances.

[0059] In one example, both the first switching assembly 1400 and the second switching assembly 1500 are combinations of two or more switching devices. It is understood that the switching devices used in the first switching assembly 1400 and the second switching assembly 1500 can be configured according to actual conditions, such as relays, contactors, insulated gate bipolar transistors (IGBTs), metal-oxide-semiconductor field-effect transistors (MOSFETs), etc.

[0060] In one example, the energy storage device 1600 is a capacitor, such as an electrolytic capacitor, a film capacitor, a supercapacitor / ultracapacitor, or a lithium-ion capacitor (LIC). It is understood that the implementation of the energy storage device 1600 can be tailored to specific circumstances.

[0061] In one example, both the first motor control module 1700 and the second motor control module 1800 can convert the received electrical energy voltage to obtain the electrical energy voltage required for charging the vehicle battery module 2000.

[0062] In one example, both the first motor control module 1700 and the second motor control module 1800 can be implemented using an inverter bridge topology, such as a three-phase full-bridge circuit. It is understood that the specific configurations of the first motor control module 1700 and the second motor control module 1800 can be customized according to actual conditions.

[0063] In one example, the vehicle battery module 2000 may be the vehicle's power battery or a battery pack in the vehicle.

[0064] Please refer to it again. Figure 2 In some embodiments of this application, when the first switching device 1300 is closed and the first switching assembly 1400 is in a conducting state, the vehicle battery module 2000 is charged through the first charging circuit, and when the second switching assembly 1500 is in a conducting state, the vehicle battery module 2000 is charged through the second charging circuit.

[0065] Specifically, in this embodiment, the on / off state of the first switching device 1300 and the on state of the first switching assembly 1400 jointly determine whether the vehicle battery module 2000 is charged through the first charging circuit. Furthermore, the on state of the second switching assembly 1500 determines whether the vehicle battery module 2000 is charged through the second charging circuit.

[0066] Understandably, when the first switching device 1300 is closed and the first switching assembly 1400 is in the ON state, the electrical energy flowing into the first charging port 1100 can sequentially flow through the first switching assembly 1400, the first switching device 1300, and the first motor control module 1700, and finally be transmitted to the vehicle battery module 2000, thereby charging the vehicle battery module 2000. However, when the first switching device 1300 is open or the first switching assembly 1400 is in the OFF state, the electrical energy flowing into the first charging port 1100 cannot be transmitted to the vehicle battery module 2000, and therefore, charging of the vehicle battery module 2000 cannot be achieved.

[0067] It is also understandable that when the second switch assembly 1500 is in the ON state, the electrical energy flowing into the second charging port 1200 can flow sequentially through the second switch assembly 1500 and the second motor control module 1800, and finally be transmitted to the vehicle battery module 2000, thereby charging the vehicle battery module 2000. However, when the second switch assembly 1500 is in the OFF state, the electrical energy flowing into the second charging port 1200 cannot be transmitted to the vehicle battery module 2000, and therefore, charging of the vehicle battery module 2000 cannot be achieved.

[0068] Thus, in this embodiment of the application, the vehicle battery module 2000 can be charged through the first charging circuit when the first switching device 1300 is closed and the first switching assembly 1400 is in the conducting state, and the vehicle battery module 2000 can be charged through the second charging circuit when the second switching assembly 1500 is in the conducting state, thereby realizing the charging control of the vehicle battery module 2000.

[0069] Please refer to it again. Figure 2In some embodiments of this application, the first switching assembly 1400 includes a second switching device 1410 and a third switching device 1420. One end of the second switching device 1410 and one end of the third switching device 1420 are electrically connected to the first charging port 1100, and the other end of the second switching device 1410 and the other end of the third switching device 1420 are electrically connected to the energy storage device 1600. When both the second switching device 1410 and the third switching device 1420 are closed, the first switching assembly 1400 is in a conducting state. When either the second switching device 1410 or the third switching device 1420 is open, the first switching assembly 1400 is in a cut-off state.

[0070] Specifically, in this embodiment, the first switching assembly 1400 may be composed of two switching devices, namely a second switching device 1410 and a third switching device 1420. One end of the second switching device 1410 and one end of the third switching device 1420 are electrically connected to the first charging port 1100, and the other ends of the second switching device 1410 and the third switching device 1420 are electrically connected to the energy storage device 1600.

[0071] Furthermore, in this embodiment, when both the second switching device 1410 and the third switching device 1420 are closed, the first switching assembly 1400 is in a conducting state, and thus, electrical energy flowing into the first charging port 1100 can be transmitted to the first switching device 1300 through the first switching assembly 1400. Conversely, when either the second switching device 1410 or the third switching device 1420 is open, the first switching assembly 1400 is in a cut-off state, and electrical energy flowing into the first charging port 1100 cannot be transmitted to the first switching device 1300 through the first switching assembly 1400.

[0072] It is understood that the specific configurations of the second switching device 1410 and the third switching device 1420 can be set according to actual conditions. For example, in one example, the second switching device 1410 and the third switching device 1420 can both be implemented by one or more devices such as relays, contactors, insulated gate bipolar transistors (IGBTs), and metal-oxide-semiconductor field-effect transistors (MOSFETs).

[0073] Thus, in this embodiment of the application, the first switch assembly 1400 can be implemented by the second switch device 1410 and the third switch device 1420, and the first switch assembly 1400 can be in a conducting state when both the second switch device 1410 and the third switch device 1420 are closed, and in a cut-off state when either the second switch device 1410 or the third switch device 1420 is open, thereby realizing the conduction and cut-off of the first switch assembly 1400.

[0074] Please refer to it again. Figure 2 In some embodiments of this application, the second switch assembly 1500 includes a fourth switch device 1510 and a fifth switch device 1520. One end of the fourth switch device 1510 and one end of the fifth switch device 1520 are electrically connected to the second charging port 1200. The other end of the fourth switch device 1510 is electrically connected to the vehicle battery module 2000, and the other end of the fifth switch device 1520 is electrically connected to the second motor control module 1800. When both the fourth switch device 1510 and the fifth switch device 1520 are closed, the second switch assembly 1500 is in a conducting state. When either the fourth switch device 1510 or the fifth switch device 1520 is open, the second switch assembly 1500 is in a cut-off state.

[0075] Specifically, in this embodiment, the second switch assembly 1500 may be composed of two switching devices, namely a fourth switching device 1510 and a fifth switching device 1520. One end of the fourth switching device 1510 and one end of the fifth switching device 1520 are electrically connected to the second charging port 1200, and the other end of the fourth switching device 1510 is electrically connected to the vehicle battery module 2000 and the second motor control module 1800.

[0076] Furthermore, in this embodiment, when both the fourth switching device 1510 and the fifth switching device 1520 are closed, the second switching assembly 1500 is in a conducting state, and thus, the electrical energy flowing in from the second charging port 1200 can be transmitted to the second motor control module 1800 through the second switching assembly 1500. Conversely, when either the fourth switching device 1510 or the fifth switching device 1520 is open, the second switching assembly 1500 is in a cut-off state, and the electrical energy flowing in from the first charging port 1100 cannot be transmitted to the second motor control module 1800 through the second switching assembly 1500.

[0077] It is understood that the specific configurations of the fourth switching device 1510 and the fifth switching device 1520 can be set according to the actual situation. For example, in one example, the fourth switching device 1510 and the fifth switching device 1520 can both be implemented by one or more devices such as relays, contactors, insulated gate bipolar transistors (IGBTs), and metal-oxide-semiconductor field-effect transistors (MOSFETs).

[0078] Thus, in this embodiment, the second switch assembly 1500 can be implemented by the fourth switch device 1510 and the fifth switch device 1520, and the second switch assembly 1500 can be in a conducting state when both the fourth switch device 1510 and the fifth switch device 1520 are closed, and in a cut-off state when either the fourth switch device 1510 or the fifth switch device 1520 is open, thereby realizing the conduction and cut-off of the second switch assembly 1500.

[0079] Please refer to it again. Figure 2 In some embodiments of this application, the first motor control module 1700 includes a first full-bridge circuit 1710 and a first energy storage component 1720, and the second motor control module 1800 includes a second full-bridge circuit 1810 and a second energy storage component 1820. One end of the first switching device 1300, the first energy storage component 1720 and the first full-bridge circuit 1710 are sequentially electrically connected, and the other end of the first full-bridge circuit 1710 is electrically connected to the vehicle battery module 2000. One end of the second switching component 1500, the second energy storage component 1820 and the second full-bridge circuit 1810 are sequentially electrically connected, and the other end of the second full-bridge circuit 1810 is electrically connected to the vehicle battery module 2000.

[0080] Specifically, in the embodiments of this application, both the first motor control module 1700 and the second motor control module 1800 can be composed of a full-bridge circuit and an energy storage component.

[0081] More specifically, the first motor control module 1700 may be composed of a first full-bridge circuit 1710 and a first energy storage component 1720. One end of the first switching device 1300, the first energy storage component 1720, and the first full-bridge circuit 1710 are sequentially electrically connected, and the other end of the first full-bridge circuit 1710 is electrically connected to the vehicle battery module 2000. Similarly, the second motor control module 1800 may be composed of a second full-bridge circuit 1810 and a second energy storage component 1820. One end of the second switching component 1500, the second energy storage component 1820, and the second full-bridge circuit 1810 are sequentially electrically connected, and the other end of the second full-bridge circuit 1810 is electrically connected to the vehicle battery module 2000.

[0082] In one example, both the first full-bridge circuit 1710 and the second full-bridge circuit 1810 are three-phase full-bridge circuits.

[0083] In one example, both the first energy storage component 1720 and the second energy storage component 1820 can be constructed using multiple power inductors.

[0084] In one example, both the first energy storage component 1720 and the second energy storage component 1820 can be a combination of a supercapacitor cell (such as a farad capacitor) and a voltage equalization circuit.

[0085] Thus, in this embodiment, the first motor control module 1700 can be implemented through the first full-bridge circuit 1710 and the first energy storage component 1720, and the second motor control module 1800 can be implemented through the second full-bridge circuit 1810 and the second energy storage component 1820. This allows the first switching device 1300, the first energy storage component 1720, and one end of the first full-bridge circuit 1710 to be sequentially electrically connected, with the other end of the first full-bridge circuit 1710 electrically connected to the vehicle battery module 2000. Similarly, the second switching component 1500, the second energy storage component 1820, and one end of the second full-bridge circuit 1810 are sequentially electrically connected, with the other end of the second full-bridge circuit 1810 electrically connected to the vehicle battery module 2000.

[0086] Please refer to it again. Figure 2 In some embodiments of this application, the first full-bridge circuit 1710 includes a plurality of first bridge arms, the first energy storage component 1720 includes a plurality of first inductors 1721, each first bridge arm includes a first upper bridge arm switch 1711 and a first lower bridge arm switch 1712, the midpoint of each first bridge arm is electrically connected to one end of a first inductor 1721, the other end of each first inductor 1721 is electrically connected to a first switching device 1300, each first upper bridge arm switch 1711 is electrically connected to one end of the vehicle battery module 2000, and each first lower bridge arm switch 1712 is electrically connected to the other end of the vehicle battery module 2000.

[0087] Specifically, in this embodiment, the first full-bridge circuit 1710 may be composed of multiple first bridge arms. Each first bridge arm includes a switch transistor located in the upper bridge arm and a switch transistor located in the lower bridge arm, namely, a first upper bridge arm switch transistor 1711 and a first lower bridge arm switch transistor 1712. The first upper bridge arm switch transistor 1711 and the first lower bridge arm switch transistor 1712 are respectively connected to the two ends of the vehicle battery module 2000, such that the first upper bridge arm switch transistor 1711 is electrically connected to the positive terminal of the vehicle battery module 2000, and the first lower bridge arm switch transistor 1712 is electrically connected to the negative terminal of the vehicle battery module 2000.

[0088] Furthermore, in this embodiment, the first energy storage component 1720 includes a plurality of first inductors 1721. One end of each first inductor 1721 is electrically connected to the midpoint of a first bridge arm. In other words, in each first bridge arm, the midpoint of the connection line between the first upper bridge arm switch transistor 1711 and the first lower bridge arm switch transistor 1712 is electrically connected to one end of a first inductor 1721. Simultaneously, the other end of each first inductor 1721 is electrically connected to a first switching device 1300.

[0089] Understandably, the number of first bridge arms can be set according to the actual situation, such as... Figure 2 In the example shown, the number of the first bridge arm is 3. In other words, the first full-bridge circuit 1710 is a three-phase full-bridge circuit, which consists of 6 switching transistors, namely 3 upper bridge arm switching transistors (i.e., the first upper bridge arm switching transistor 1711) and 3 lower bridge arm switching transistors (i.e., the first lower bridge arm switching transistor 1712).

[0090] It is also understandable that the number of first inductors 1721 can be set according to the actual situation, such as... Figure 2 In the example shown, when the number of first bridge arms is 3, in other words, when the first full-bridge circuit 1710 is a three-phase full-bridge circuit, the number of first inductors 1721 is 3, and each first inductor 1721 is connected to the midpoint of a first bridge arm.

[0091] Thus, in this embodiment of the application, the first full-bridge circuit 1710 can be implemented by a plurality of first bridge arms including a first upper bridge arm switch 1711 and a first lower bridge arm switch 1712, and the first energy storage component 1720 can be implemented by a plurality of first inductors 1721. In this way, the midpoint of each first bridge arm is electrically connected to one end of a first inductor 1721, the other end of each first inductor 1721 is electrically connected to the first switching device 1300, each first upper bridge arm switch 1711 is electrically connected to one end of the vehicle battery module 2000, and each first lower bridge arm switch 1712 is electrically connected to the other end of the vehicle battery module 2000.

[0092] Please refer to it again. Figure 2 In some embodiments of this application, the first full-bridge circuit 1710 is configured to switch to a first circuit state or switch between a first circuit state and a second circuit state when the first switching device 1300 is closed and the first switching assembly 1400 is in a conducting state, so that the vehicle battery module 2000 is charged through the first charging circuit. Specifically, when the first upper bridge arm switch 1711 of at least one first bridge arm is turned on and the first lower bridge arm switch 1712 is turned off, so that the vehicle battery module 2000 is charged through the first charging port 1100, the energy storage device 1600 and the first inductor 1721 connected to the first bridge arm, the first full-bridge circuit 1710 is in the first circuit state; when the first upper bridge arm switch 1711 of at least one first bridge arm is turned off and the first lower bridge arm switch 1712 is turned on, so that the energy storage device 1600 and the first inductor 1721 connected to the first bridge arm are charged through the first charging port 1100, the first full-bridge circuit 1710 is in the second circuit state.

[0093] Specifically, in this embodiment of the application, when the vehicle is being charged through the first charging port 1100, or when the vehicle is being charged through a charging gun inserted into the first charging port 1100, the first full-bridge circuit 1710 can switch to a first circuit state to allow the vehicle battery module 2000 to be charged through the first charging circuit. The first full-bridge circuit 1710 can also switch between the first circuit state and the second circuit state to allow the vehicle battery module 2000 to be charged through the first charging circuit.

[0094] For a clearer illustration of the implementation methods of this application, please refer to the following: Figure 2-4 , Figure 3 and 4 This is a schematic diagram illustrating application scenarios in certain embodiments of this application. Specifically, for a single-gun charging scenario for a vehicle, when the first switching device 1300 is closed and the first switching assembly 1400 is in the conducting state, if the voltage input from the first charging port 1100 can match the charging voltage required by the vehicle battery module 2000, then at least one first upper bridge arm switch 1711 in the first full-bridge circuit 1710 can be turned on and the first lower bridge arm switch 1712 can be turned off to switch to the first circuit state, so that the first charging port 1100, the first switching assembly 1400, the first switching device 1300, the energy storage device 1600, the first inductor 1721 (connected to the first bridge arm where the first upper bridge arm switch 1711 is turned on and the first lower bridge arm switch 1712 is turned off), the (conducting) first upper bridge arm switch 1711, and the vehicle battery module 2000 together constitute as follows: Figure 3 The power-on circuit, indicated by the dashed arrow, charges the vehicle's battery module 2000.

[0095] It is understandable that when the first switching device 1300 is closed and the first switching assembly 1400 is in the conducting state, if the voltage of the electrical energy input from the first charging port 1100 is less than the charging voltage required by the vehicle charging module, then in the power-on circuit formed by the first charging port 1100, the first inductor 1721 (connected to the first bridge arm that is conducting and the first lower bridge arm switch 1712 is off), the (conducting) first upper bridge arm switch 1711, and the vehicle battery module 2000, the first charging port 1100, the energy storage device 1600, and the first inductor 1721 can all supply power to the vehicle battery module 2000. This allows the vehicle battery module 2000 to be charged through the electrical energy provided by the first charging port 1100, the energy storage device 1600, and the first inductor 1721, thereby ensuring that the actual charging voltage of the vehicle battery module 2000 can meet the charging voltage requirements.

[0096] It is also understandable that, since the energy stored in the energy storage device 1600 and the energy stored in each of the first inductors 1721 in the first full-bridge circuit 1710 are both limited, when the vehicle battery module 2000 is charged by the energy provided by the first charging port 1100, the energy storage device 1600, and the first inductors 1721, as the charging time increases, the energy stored in the energy storage device 1600 and the first inductors 1721 gradually decreases, eventually causing the actual charging voltage of the vehicle battery module 2000 to fail to meet the charging voltage requirements.

[0097] Therefore, when the first switching device 1300 is closed and the first switching assembly 1400 is in the on state, the first upper bridge arm switch 1711 of at least one first bridge arm in the first full-bridge circuit 1710 can be turned off and the first lower bridge arm switch 1712 can be turned on, thereby switching the first full-bridge circuit 1710 to the second circuit state. Furthermore, the energy storage device 1600, the first inductor 1721 (connected to the first bridge arm where the first upper bridge arm switch 1711 is off and the first lower bridge arm switch 1712 is on), the (on) first lower bridge arm switch 1712, and the first charging port 1100 can be configured as follows: Figure 4 The power-on circuit indicated by the dashed arrow in the middle allows the energy storage device 1600 and the first inductor 1721 (connected to the first bridge arm where the first upper bridge arm switch 1711 is off and the first lower bridge arm switch 1712 is on) to be charged through the first charging port 1100.

[0098] It is understandable that by switching the first full-bridge circuit 1710 to the second circuit state, it can be ensured to a certain extent that when the first full-bridge circuit 1710 switches to the first circuit state again, the voltage provided by the first charging port 1100, the energy storage device 1600, and the first inductor 1721 (connected to the first bridge arm that is turned on by the first upper bridge arm switch transistor 1711 and turned off by the first lower bridge arm switch transistor 1712) can meet the charging voltage required by the vehicle battery module 2000.

[0099] In one example, the first full-bridge circuit 1710 can periodically switch between a first circuit state and a second circuit state.

[0100] In one example, the first full-bridge circuit 1710 may periodically switch from a first circuit state to a second circuit state when the energy stored in the energy storage device 1600 is depleted, and / or when the energy stored in the first inductor 1721 (connected to the first bridge arm with the first upper bridge arm switch 1711 turned off and the first lower bridge arm switch 1712 turned on) is depleted, and switch from the second circuit state to the first circuit state when the energy stored in the energy storage device 1600 meets a preset condition (such as full charge), and / or when the energy stored in the first inductor 1721 (connected to the first bridge arm with the first upper bridge arm switch 1711 turned off and the first lower bridge arm switch 1712 turned on) meets a preset condition (such as full charge).

[0101] Furthermore, it is understood that in the embodiments of this application, a controller (such as a motor controller) may be installed inside the vehicle charging device, or the vehicle charging device may be connected to an external controller (such as a motor controller). The controller can then detect and control the operating state of each component in the vehicle charging device to change the state of the first full-bridge circuit 1710, such as controlling the state of the first switching device 1300, the first switching assembly 1400 and each switching transistor in the first full-bridge circuit 1710, thereby switching the first charging circuit to the first circuit state, or switching between the first circuit state and the second circuit state.

[0102] In one example, the controller can adjust the three-phase duty cycle of the first full-bridge circuit 1710 to control the first upper bridge arm switch 1711 and the first lower bridge arm switch 1712 of each first bridge arm to switch between on and off at a fixed frequency. When the first lower bridge arm switch 1712 is on, the first inductor 1721 and the energy storage device 1600 store energy, and this energy charges the vehicle battery module 2000 through the first upper bridge arm switch 1711 when the first lower bridge arm switch 1712 is off.

[0103] In one example, the charging device (such as a charging column) can periodically sample the charging status of the energy storage device 1600 through the first charging port 1100, and when the energy storage device 1600 is fully charged, it can charge the vehicle charging module in conjunction with the energy storage device 1600.

[0104] Thus, in this embodiment of the application, the first charging circuit can be switched to a first circuit state, or switched between a first circuit state and a second circuit state, thereby realizing the charging of the vehicle battery module 2000.

[0105] Furthermore, to further ensure the robust charging of the vehicle battery module 2000, both the energy storage device 1600 and the first inductor 1721 can be pre-charged, and the first full-bridge circuit 1710 can switch between a first circuit state and a second circuit state when both the energy storage device 1600 and the first inductor 1721 have completed pre-charging. The first inductor 1721 and the energy storage device 1600 can be charged through the same power supply circuit.

[0106] Please refer to it again. Figure 2 In some embodiments of this application, the second full-bridge circuit 1810 includes a plurality of second bridge arms, the second energy storage component 1820 includes a plurality of second inductors 1821, each second bridge arm includes a second upper bridge arm switch 1811 and a second lower bridge arm switch 1812, the midpoint of each second bridge arm is electrically connected to one end of a second inductor 1821, the other end of each second inductor 1821 is electrically connected to the second switching component 1500, each second upper bridge arm switch 1811 is electrically connected to one end of the vehicle battery module 2000, and each second lower bridge arm switch 1812 is electrically connected to the other end of the vehicle battery module 2000.

[0107] Specifically, in this embodiment, the second full-bridge circuit 1810 may be composed of multiple second bridge arms. Each second bridge arm includes a switch transistor located in the upper bridge arm and a switch transistor located in the lower bridge arm, namely, a second upper bridge arm switch transistor 1811 and a second lower bridge arm switch transistor 1812. The second upper bridge arm switch transistor 1811 and the second lower bridge arm switch transistor 1812 are respectively connected to the two ends of the vehicle battery module 2000, such that the second upper bridge arm switch transistor 1811 is electrically connected to the positive terminal of the vehicle battery module 2000, and the second lower bridge arm switch transistor 1812 is electrically connected to the negative terminal of the vehicle battery module 2000.

[0108] Furthermore, in this embodiment, the second energy storage component 1820 includes a plurality of second inductors 1821. One end of each second inductor 1821 is electrically connected to the midpoint of a second bridge arm. In other words, in each second bridge arm, the midpoint of the connection line between the second upper bridge arm switch 1811 and the second lower bridge arm switch 1812 is electrically connected to one end of a second inductor 1821. Simultaneously, the other end of each second inductor 1821 is electrically connected to the second switching assembly 1500.

[0109] Understandably, the number of second bridge arms can be set according to the actual situation, such as... Figure 2 In the example shown, the number of the second bridge arm is 3. In other words, the second full-bridge circuit 1810 is a three-phase full-bridge circuit, consisting of 6 switching transistors, namely 3 upper bridge arm switching transistors (i.e., the second upper bridge arm switching transistor 1811) and 3 lower bridge arm switching transistors (i.e., the second lower bridge arm switching transistor 1812).

[0110] It is also understandable that the number of second inductors 1821 can be set according to the actual situation, such as... Figure 2 In the example shown, when the number of second bridge arms is 3, that is, when the second full-bridge circuit 1810 is a three-phase full-bridge circuit, the number of second inductors 1821 is 3, and each second inductor 1821 is connected to the midpoint of a second bridge arm.

[0111] Thus, in this embodiment, the second full-bridge circuit 1810 can be implemented by a plurality of second bridge arms including a second upper bridge arm switch 1811 and a second lower bridge arm switch 1812, and the second energy storage component 1820 can be implemented by a plurality of second inductors 1821. Furthermore, the midpoint of each second bridge arm is electrically connected to one end of a second inductor 1821, the other end of each second inductor 1821 is electrically connected to the second switching component 1500, each second upper bridge arm switch 1811 is electrically connected to one end of the vehicle battery module 2000, and each second lower bridge arm switch 1812 is electrically connected to the other end of the vehicle battery module 2000.

[0112] Please refer to it again. Figure 2In some embodiments of this application, the second full-bridge circuit 1810 is configured to switch to a third circuit state, or switch between a third circuit state and a fourth circuit state, when the second switching assembly 1500 is in a conducting state, so that the vehicle battery module 2000 is charged through the second charging circuit. Specifically, when the second upper bridge arm switch 1811 of at least one second bridge arm is turned on and the second lower bridge arm switch 1812 is turned off, so that the vehicle battery module 2000 is charged through the second charging port 1200 and the second inductor 1821 connected to the second bridge arm, the second full-bridge circuit 1810 is in the third circuit state. When the second upper bridge arm switch 1811 of at least one second bridge arm is turned off and the second lower bridge arm switch 1812 is turned on, so that the second inductor 1821 connected to the second bridge arm is charged through the second charging port 1200, the second full-bridge circuit 1810 is in the fourth circuit state.

[0113] Specifically, in this embodiment of the application, when the vehicle is being charged through the second charging port 1200, or when the vehicle is being charged through a charging gun inserted into the second charging port 1200, the second full-bridge circuit 1810 can switch to the third circuit state to allow the vehicle battery module 2000 to be charged through the second charging circuit. The second full-bridge circuit 1810 can also switch between the third circuit state and the fourth circuit state to allow the vehicle battery module 2000 to be charged through the second charging circuit.

[0114] For a clearer illustration of the implementation methods of this application, please refer to the following: Figure 2 , 5 6, Figure 5 and 6 This is a schematic diagram illustrating application scenarios in certain embodiments of this application. Specifically, for a single-gun charging scenario for a vehicle, when the second switch assembly 1500 is in the ON state, if the voltage input from the second charging port 1200 can match the charging voltage required by the vehicle battery module 2000, then at least one second upper bridge arm switch 1811 in the second full-bridge circuit 1810 can be ON and the second lower bridge arm switch 1812 can be OFF to switch to the third circuit state. This allows the second charging port 1200, the second switch assembly 1500, the second inductor 1821 (connected to the second bridge arm where the second upper bridge arm switch 1811 is ON and the second lower bridge arm switch 1812 is OFF), the ON second upper bridge arm switch 1811, and the vehicle battery module 2000 to collectively constitute a configuration as shown in the diagram. Figure 5 The power-on circuit, indicated by the dashed arrow, charges the vehicle's battery module 2000.

[0115] It is understandable that when the second switch assembly 1500 is in the on state, if the voltage of the electrical energy input from the second charging port 1200 is less than the charging voltage required by the vehicle charging module, then in the power-on circuit formed by the second charging port 1200, the second inductor 1821 (connected to the second bridge arm that is on and the second lower bridge arm switch 1812 is off), the (on) second upper bridge arm switch 1811, and the vehicle battery module 2000, both the second charging port 1200 and the second inductor 1821 can supply power to the vehicle battery module 2000. This allows the vehicle battery module 2000 to be charged through the electrical energy provided by the second charging port 1200 and the second inductor 1821, thereby ensuring that the actual charging voltage of the vehicle battery module 2000 can meet the charging voltage requirements.

[0116] It is also understandable that, since the energy stored in each of the second inductors 1821 in the second full-bridge circuit 1810 is limited, when the vehicle battery module 2000 is charged by the energy provided by the second charging port 1200 and the second inductors 1821, the energy stored in the second inductors 1821 gradually decreases as the charging time increases, eventually causing the actual charging voltage of the vehicle battery module 2000 to fail to meet the charging voltage requirements.

[0117] Therefore, when the second switching assembly 1500 is in the ON state, at least one of the second bridge arms in the second full-bridge circuit 1810 can have its second upper bridge arm switch 1811 turned off and its second lower bridge arm switch 1812 turned on, thereby switching the second full-bridge circuit 1810 to the fourth circuit state. Furthermore, the second inductor 1821 (connected to the second bridge arm where the second upper bridge arm switch 1811 is off and the second lower bridge arm switch 1812 is on), the (on) second lower bridge arm switch 1812, and the second charging port 1200 can be configured as follows: Figure 6 The power-on circuit indicated by the dashed arrow in the middle allows the second inductor 1821 (connected to the second bridge arm, which is switched off by the second upper bridge arm switch 1811 and switched on by the second lower bridge arm switch 1812) to be charged through the second charging port 1200.

[0118] It is understandable that by switching the second full-bridge circuit 1810 to the fourth circuit state, it can be ensured to a certain extent that when the second full-bridge circuit 1810 switches to the third circuit state next time, the electrical voltage provided by the second charging port 1200 and the second inductor 1821 (connected to the second bridge arm that is turned on by the second upper bridge arm switch transistor 1811 and turned off by the second lower bridge arm switch transistor 1812) can meet the charging voltage required by the vehicle battery module 2000.

[0119] In one example, the second full-bridge circuit 1810 can periodically switch between a third circuit state and a fourth circuit state.

[0120] In one example, the second full-bridge circuit 1810 can periodically switch from a third circuit state to a fourth circuit state when the energy stored in the second inductor 1821 (connected to the second bridge arm where the second upper bridge arm switch 1811 is off and the second lower bridge arm switch 1812 is on) is depleted, and switch from the fourth circuit state to the third circuit state when the energy stored in the second inductor 1821 (connected to the second bridge arm where the second upper bridge arm switch 1811 is off and the second lower bridge arm switch 1812 is on) meets a preset condition (such as being fully charged).

[0121] Furthermore, it is understood that in the embodiments of this application, a controller (such as a motor controller) may be provided inside the vehicle charging device, or the vehicle charging device may be connected to an external controller (such as a motor controller). The controller can then detect and control the operating state of each component in the vehicle charging device to change the state of the second full-bridge circuit 1810, such as controlling the state of the second switching assembly 1500 and each switching transistor in the second full-bridge circuit 1810, thereby switching the second charging circuit to the third circuit state, or switching between the third circuit state and the fourth circuit state.

[0122] In one example, the controller can control the second upper bridge arm switch 1811 and the second lower bridge arm switch 1812 of each second bridge arm to switch between on and off at a fixed frequency by adjusting the three-phase duty cycle of the second full-bridge circuit 1810. When the second lower bridge arm switch 1812 is on, the second inductor 1821 and the energy storage device 1600 store energy, and this energy is supplied to the vehicle battery module 2000 for charging through the second upper bridge arm switch 1811 when the second lower bridge arm switch 1812 is off.

[0123] In one example, the charging device (such as a charging column) can periodically sample the charging status of the energy storage device 1600 through the second charging port 1200, and when the energy storage device 1600 is fully charged, it can charge the vehicle charging module in conjunction with the energy storage device 1600.

[0124] Thus, in this embodiment of the application, the second charging circuit can be switched to the third circuit state, or switched between the third circuit state and the fourth circuit state, thereby realizing the charging of the vehicle battery module 2000.

[0125] Please refer to it again. Figure 2 In some embodiments of this application, the vehicle battery module (2000) is charged via a first charging circuit and / or a second charging circuit after the pre-charging of the energy storage device (1600) is completed.

[0126] Specifically, to prevent the first charging circuit from switching directly to the first circuit state without switching to the second circuit state during the charging process of the vehicle battery module 2000, which would result in the voltage provided by the first charging port 1100, the energy storage device 1600, and the first inductor 1721 (connected to the first bridge arm where the first upper bridge arm switch 1711 is on and the first lower bridge arm switch 1712 is off) being insufficient to meet the charging voltage requirements of the vehicle battery module 2000, in this embodiment, the first charging circuit can switch between the first circuit state and the second circuit state after the pre-charging of the energy storage device 1600 is completed, thereby ensuring that the vehicle battery module 2000 can be reliably charged through the first charging circuit.

[0127] Similarly, in order to ensure that the vehicle battery module 2000 can be charged with appropriate current and voltage, thereby extending the life of the vehicle battery module 2000 and improving the charging efficiency of the vehicle battery module 2000, in this embodiment of the application, the second charging circuit can switch between the third circuit state and the fourth circuit state after the pre-charging of the energy storage device 1600 is completed, thereby ensuring that the vehicle battery module 2000 can be reliably charged through the second charging circuit.

[0128] Therefore, in this embodiment, a complete charging process for the energy storage device 1600 may include: first, pre-charging the energy storage device. Once the pre-charging of the energy storage device 1600 is complete, the first full-bridge circuit 1710 may switch between a first circuit state and a second circuit state. Similarly, once the pre-charging of the energy storage device 1600 is complete, the second full-bridge circuit 1810 may switch between a third circuit state and a fourth circuit state.

[0129] In one example, the energy storage device 1600 can be pre-charged by the vehicle battery module 2000.

[0130] It is understandable that after the energy storage device 1600 has completed pre-charging through the vehicle battery module 2000, it can cooperate with the first charging port 1100 and the first inductor 1721 to charge the vehicle battery module 2000.

[0131] It is also understandable that during the charging process of the vehicle battery module 2000, the pre-charged energy storage device 1600 can act as a power stabilizer and current controller, that is, to ensure that the vehicle battery module 2000 can be charged with appropriate current and voltage, thereby helping to extend the life of the vehicle battery module 2000, improve the charging efficiency of the vehicle battery module 2000, and at the same time ensure the safety of the charging process of the vehicle battery module 2000.

[0132] Thus, in this embodiment of the application, the vehicle battery module can be charged through the first charging circuit and / or the second charging circuit after the energy storage device has been pre-charged, thereby ensuring that the vehicle battery module can be steadily charged based on the electrical energy provided by the energy storage device 1600 during the charging process.

[0133] Furthermore, it can be understood that in this embodiment, the vehicle can be charged simultaneously through the first charging circuit and the second charging circuit; in other words, the vehicle in this embodiment is suitable for a dual-gun charging scenario. In the dual-gun charging scenario, the circuit state changes of the first full-bridge circuit 1710 can be found in the above description. Figure 3-4 For an explanation of the circuit state changes of the second full-bridge circuit 1810, please refer to the above information regarding... Figure 5-6 To avoid repetition, the explanation will not be repeated here.

[0134] It is also understandable that, in order to ensure that the vehicle battery module 2000 can be charged with appropriate current and voltage, thereby helping to extend the life of the vehicle battery module 2000, improve the charging efficiency of the vehicle battery module 2000, and ensure the safety of the charging process of the vehicle battery module 2000, in this embodiment of the application, when the vehicle battery module 2000 is charged through the first charging circuit and the second charging circuit simultaneously, or before being charged through one of the first charging circuit and the second charging circuit, the energy storage device 1600 needs to be pre-charged to ensure that during the charging process of the vehicle battery module 2000, the vehicle battery module 2000 can obtain appropriate current and voltage for charging based on the pre-charged energy storage device 1600.

[0135] Please refer to it again. Figure 2 In some embodiments of this application, the first full-bridge circuit is configured to switch between a fifth circuit state and a sixth circuit state when the first switching device is closed and the first switching assembly is in the off state, so as to precharge the energy storage device. The first charging circuit is in the fifth circuit state when the first upper bridge arm switch of at least one first bridge arm is turned on and the first lower bridge arm switch of each first bridge arm is turned off; the first charging circuit is in the sixth circuit state when the first lower bridge arm switch of at least one first bridge arm is turned on and the first upper bridge arm switch of each first bridge arm is turned off.

[0136] Specifically, in this embodiment of the application, the energy storage device 1600 can be pre-charged by the vehicle battery module 2000.

[0137] For a clearer illustration of the implementation methods of this application, please refer to the following: Figure 2 , 7 8, Figure 7 and 8This is a schematic diagram illustrating an application scenario in certain embodiments of this application. Specifically, when the first switching device 1300 is closed and the first switching assembly 1400 is in the off state, at least one first upper bridge arm switch 1711 in the first full-bridge circuit 1710 can be turned on and the first lower bridge arm switch 1712 can be turned off to switch to the fifth circuit state, so that the first switching device 1300, the energy storage device 1600, the first inductor 1721 (connected to the first bridge arm where the first upper bridge arm switch 1711 is turned on and the first lower bridge arm switch 1712 is turned off), the (turned-on) first upper bridge arm switch 1711, and the vehicle battery module 2000 together constitute as follows: Figure 7 The power-on circuit indicated by the dashed arrow in the middle enables the vehicle battery module 2000 to perform step-down charging on the energy storage device 1600 and the first inductor 1721 (connected to the first bridge arm that is turned on by the first upper bridge arm switch 1711 and turned off by the first lower bridge arm switch 1712).

[0138] Furthermore, when the first switching device 1300 is closed and the first switching assembly 1400 is in the off state, at least one first upper bridge arm switch 1711 in the first full-bridge circuit 1710 can be turned off and the first lower bridge arm switch 1712 can be turned on to switch to the sixth circuit state, so that the first switching device 1300, the energy storage device 1600, the first inductor 1721 (connected to the first bridge arm where the first upper bridge arm switch 1711 is turned off and the first lower bridge arm switch 1712 is turned on), and the (turned-on) first lower bridge arm switch 1712 together constitute as follows: Figure 8 The energized circuit is indicated by the dashed arrow in the middle.

[0139] Therefore, when the first full-bridge circuit 1710 switches between the fifth circuit state and the sixth circuit state, the energy storage device 1600 can be pre-charged by the vehicle battery module 2000.

[0140] Furthermore, it is understood that in the embodiments of this application, during a complete charge of the vehicle battery module 2000, the pre-charging of the energy storage device 1600 may be performed only once. In other words, the vehicle battery module 2000 may pre-charge the energy storage device 1600 so that, after pre-charging, it can charge itself through the pre-charged energy storage device 1600, the first full-bridge circuit 1710, and / or the second full-bridge circuit. More specifically, in the embodiments of this application, a complete charge process of the vehicle battery module 2000 may include:

[0141] First, the first full-bridge circuit 1710 switches between the fifth circuit state and the sixth circuit state (i.e., as shown in the image). Figure 7 and 8 As shown), this allows the energy storage device 1600 to be pre-charged by the vehicle battery module 2000.

[0142] Then, after the energy storage device 1600 has completed pre-charging, if a charging gun is inserted into the first charging port 1100, the first full-bridge circuit 1710 can switch to the first circuit state, or switch between the first circuit state and the second circuit state (i.e., as shown in the image). Figure 3 and 4 As shown, the vehicle battery module 2000 can be charged through the energy storage device 1600, the first inductor 1721, and the first charging port 1100, and the energy storage device 1600 and the first inductor 1721 can be charged through the first charging port 1100 to maintain the stability of their stored energy. During this process, the energy storage device 1600, based on the cooperation of the first full-bridge circuit 1710 and the closed first switching device 1300, ensures that the vehicle battery module 2000 can be charged with appropriate current and voltage, thereby helping to extend the lifespan of the vehicle battery module 2000, improve the charging efficiency of the vehicle battery module 2000, and ensure the safety of the charging process.

[0143] Similarly, after the energy storage device 1600 has completed pre-charging, if a charging gun is inserted into the second charging port 1200, the second full-bridge circuit 1810 can switch to the third circuit state, or switch between the third and fourth circuit states (i.e., as...). Figure 5 and 6 As shown, this allows the vehicle battery module 2000 to be charged through the second inductor 1821 and the second charging port 1200, and allows the energy storage device 1600 and the first inductor 1821 to be charged through the first charging port 1100 to maintain the stability of their stored energy. During this process, the energy storage device 1600, based on the cooperation of the first full-bridge circuit 1710 and the closed first switching device 1300, ensures that the vehicle battery module 2000 can be charged with appropriate current and voltage, thereby helping to extend the lifespan of the vehicle battery module 2000, improve the charging efficiency of the vehicle battery module 2000, and ensure the safety of the charging process.

[0144] Thus, in this embodiment of the application, the energy storage device 1600 can be pre-charged by the vehicle battery module 2000 and the first full-bridge circuit 1710 that switches between the fifth circuit state and the sixth circuit state.

[0145] This application also provides a vehicle that includes the vehicle charging device described above.

[0146] In this specification, the terms "specifically," "furthermore," "particularly," "understandably," etc., refer to specific features, structures, materials, or characteristics described in connection with embodiments or examples that are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0147] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this application pertain.

[0148] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A vehicle charging device, characterized in that, The vehicle charging device is electrically connected to the vehicle battery module (2000). The vehicle charging device includes a first charging port (1100), a second charging port (1200), a first switching device (1300), a first switching assembly (1400), a second switching assembly (1500), an energy storage device (1600), a first motor control module (1700), and a second motor control module (1800). The first charging port (1100), the first switching assembly (1400), the energy storage device (1600), the first switching device (1300), and the first motor control module (1700) are sequentially electrically connected to form the first charging circuit of the vehicle battery module (2000). The second charging port (1200), the second switch assembly (1500) and the second motor control module (1800) are electrically connected in sequence to form the second charging circuit of the vehicle battery module (2000).

2. The vehicle charging device according to claim 1, characterized in that, When the first switching device (1300) is closed and the first switching assembly (1400) is in the on state, the vehicle battery module (2000) is charged through the first charging circuit; When the second switch assembly (1500) is in the ON state, the vehicle battery module (2000) is charged through the second charging circuit.

3. The vehicle charging device according to claim 1 or 2, characterized in that, The first switching assembly (1400) includes a second switching device (1410) and a third switching device (1420). One end of the second switching device (1410) and one end of the third switching device (1420) are electrically connected to the first charging port (1100). The other end of the second switching device (1410) is electrically connected to the energy storage device (1600) and the first switching device (1300). The other end of the third switching device (1420) is electrically connected to the energy storage device (1600) and the vehicle battery module (2000). When both the second switching device (1410) and the third switching device (1420) are closed, the first switching assembly (1400) is in a conducting state. When either the second switching device (1410) or the third switching device (1420) is open, the first switching assembly (1400) is in a cut-off state.

4. The vehicle charging device according to claim 1 or 2, characterized in that, The second switch assembly (1500) includes a fourth switch device (1510) and a fifth switch device (1520). One end of the fourth switch device (1510) and one end of the fifth switch device (1520) are electrically connected to the second charging port (1200). The other end of the fourth switch device (1510) is electrically connected to the vehicle battery module (2000). The other end of the fifth switch device (1520) is electrically connected to the second motor control module (1800). When both the fourth switch device (1510) and the fifth switch device (1520) are closed, the second switch assembly (1500) is in a conducting state. When either the fourth switch device (1510) or the fifth switch device (1520) is open, the second switch assembly (1500) is in a cut-off state.

5. The vehicle charging device according to claim 1, characterized in that, The first motor control module (1700) includes a first full-bridge circuit (1710) and a first energy storage component (1720). The second motor control module (1800) includes a second full-bridge circuit (1810) and a second energy storage component (1820). One end of the first switching device (1300), the first energy storage component (1720), and the first full-bridge circuit (1710) are sequentially electrically connected. The other end of the first full-bridge circuit (1710) is electrically connected to the vehicle battery module (2000). One end of the second switching component (1500), the second energy storage component (1820), and the second full-bridge circuit (1810) are sequentially electrically connected. The other end of the second full-bridge circuit (1810) is electrically connected to the vehicle battery module (2000).

6. The vehicle charging device according to claim 5, characterized in that, The first full-bridge circuit (1710) includes a plurality of first bridge arms, the first energy storage component (1720) includes a plurality of first inductors (1721), each first bridge arm includes a first upper bridge arm switch (1711) and a first lower bridge arm switch (1712), the midpoint of each first bridge arm is electrically connected to one end of a first inductor (1721), the other end of each first inductor (1721) is electrically connected to the first switching device (1300), each first upper bridge arm switch (1711) is electrically connected to one end of the vehicle battery module (2000), and each first lower bridge arm switch (1712) is electrically connected to the other end of the vehicle battery module (2000).

7. The vehicle charging device according to claim 6, characterized in that, The first full-bridge circuit (1710) is configured to switch to a first circuit state or switch between a first circuit state and a second circuit state when the first switching device (1300) is closed and the first switching assembly (1400) is in an on state, so that the vehicle battery module (2000) can be charged through the first charging circuit. Specifically, when at least one of the first upper bridge arm switches (1711) of the first bridge arm is turned on and the first lower bridge arm switch (1712) is turned off, so that the vehicle battery module (2000) is charged through the first charging port (1100), the energy storage device (1600) and the first inductor (1721) connected to the first bridge arm, the first full-bridge circuit (1710) is in the first circuit state; when at least one of the first upper bridge arm switches (1711) of the first bridge arm is turned off and the first lower bridge arm switch (1712) is turned on, so that the energy storage device (1600) and the first inductor (1721) connected to the first bridge arm are charged through the first charging port (1100), the first full-bridge circuit (1710) is in the second circuit state.

8. The vehicle charging device according to claim 5, characterized in that, The second full-bridge circuit (1810) includes a plurality of second bridge arms, and the second energy storage component (1820) includes a plurality of second inductors (1821). Each second bridge arm includes a second upper bridge arm switch (1811) and a second lower bridge arm switch (1812). The midpoint of each second bridge arm is electrically connected to one end of a second inductor (1821), and the other end of each second inductor (1821) is electrically connected to the second switching component (1500). Each second upper bridge arm switch (1811) is electrically connected to one end of the vehicle battery module (2000), and each second lower bridge arm switch (1812) is electrically connected to the other end of the vehicle battery module (2000).

9. The vehicle charging device according to claim 8, characterized in that, The second full-bridge circuit (1810) is configured to switch to a third circuit state, or switch between the third circuit state and a fourth circuit state, when the second switching assembly (1500) is in the on state, so that the vehicle battery module (2000) can be charged through the second charging circuit. Specifically, when at least one of the second upper bridge arm switches (1811) of the second bridge arm is turned on and the second lower bridge arm switch (1812) is turned off, so that the vehicle battery module (2000) is charged through the second charging port (1200) and the second inductor (1821) connected to the second bridge arm, the second full-bridge circuit (1810) is in the third circuit state. When at least one of the second bridge arm switches (1811) of the second bridge arm is turned off and the second lower bridge arm switch (1812) is turned on, so that the second inductor (1821) connected to the second bridge arm is charged through the second charging port (1200), the second full-bridge circuit (1810) is in the fourth circuit state.

10. The vehicle charging device according to claim 6, characterized in that, When the pre-charging of the energy storage device (1600) is completed, the vehicle battery module (2000) is charged through the first charging circuit and / or the second charging circuit.

11. The vehicle charging device according to claim 10, characterized in that, The first full-bridge circuit (1710) is configured to switch between a fifth circuit state and a sixth circuit state when the first switching device (1300) is closed and the first switching assembly (1400) is in the off state, so as to precharge the energy storage device (1600). Specifically, when at least one of the first upper bridge arm switches (1711) of the first bridge arm is turned on and the first lower bridge arm switch (1712) of each of the first bridge arms is turned off, the first charging circuit is in the fifth circuit state; when at least one of the first lower bridge arm switches (1712) of the first bridge arm is turned on and the first upper bridge arm switch (1711) of each of the first bridge arms is turned off, the first charging circuit is in the sixth circuit state.

12. A vehicle, characterized in that, Includes a vehicle battery module and a vehicle charging device as described in any one of claims 1-11.

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