Vehicle charging heat management device and vehicle

Abstract

The invention discloses a vehicle charging heat management device and a vehicle, and relates to the technical field of charging. The vehicle charging heat management device comprises a charging pile liquid cooling system, a mode selection module, an air conditioner refrigeration system, a battery, a charging gun water cooling inlet branch and a charging gun water cooling outlet branch. The charging pile liquid cooling system is connected with the charging gun water cooling inlet branch and the charging gun water cooling outlet branch. The mode selection module is connected with the charging gun water cooling inlet branch, the charging gun water cooling outlet branch and the air conditioner refrigeration system. The mode selection module is used for selecting the charging cooling mode of the battery by connecting or disconnecting the connection relation between the charging pile liquid cooling system and the air conditioner refrigeration system. The heat load of the whole vehicle air conditioner refrigerating system in the battery fast charging process is transferred into the charging pile liquid cooling system, and the fast charging cooling capacity requirement is met.

Description

Technical Field

[0001] The present application relates to the field of charging technology, and in particular to a vehicle charging thermal management device and a vehicle. Background Art

[0002] As power battery fast-charging times become increasingly shorter, a reliable and efficient heat dissipation system is needed to provide the energy required for super-fast battery charging technology. Existing electric vehicles rely on the vehicle's air conditioning system to cool the battery during fast charging. However, in extreme environments (for example, high summer temperatures), the cooling capacity of the air conditioning system is often insufficient to maintain the battery's high-power fast-charging performance, thus affecting the super-fast charging experience in these extreme conditions. Summary of the Invention

[0003] Purpose of the invention: The embodiments of the present application provide a vehicle charging thermal management device and a vehicle to meet the cooling requirements of the vehicle during fast charging.

[0004] Technical solution: A vehicle charging thermal management device according to an embodiment of the present application includes:

[0005] Charging pile liquid cooling system, mode selection module, air conditioning refrigeration system, battery, charging gun water cooling inlet branch and charging gun water cooling outlet branch;

[0006] The charging pile liquid cooling system is connected to the charging gun water cooling inlet branch and the charging gun water cooling outlet branch respectively; the mode selection module is connected to the charging gun water cooling inlet branch, the charging gun water cooling outlet branch and the air conditioning refrigeration system respectively;

[0007] The mode selection module is used to select the charging cooling mode of the battery by turning on or off the connection between the charging pile liquid cooling system and the air conditioning refrigeration system.

[0008] In some embodiments, the charging pile liquid cooling system includes a water storage module, a water pump, a heat exchange module and a plurality of pipelines;

[0009] Among them, the water storage module is connected to the water pump, and the water pump is connected to the heat exchange module and the charging gun water cooling outlet branch through the pipeline; the heat exchange module is connected to the charging gun water cooling inlet branch through the pipeline.

[0010] In some embodiments, the charging cooling mode includes a first cooling mode; the charging pile liquid cooling system also includes a first condensing module; the air-conditioning refrigeration system includes a second condensing module; the mode selection module includes a first switch unit; wherein, the first condensing module is respectively connected to the charging gun water cooling inlet branch and the charging gun water cooling outlet branch, and the first condensing module is also connected to the second condensing module through the first switch unit; the first switch unit is used to turn on or off the connection relationship between the first condensing module and the second condensing module to select or turn off the first cooling mode.

[0011] In some embodiments, the first condensing module is a water-cooled condenser, and the second condensing module is an air-cooled condenser.

[0012] In some embodiments, the charging cooling mode includes a second cooling mode; the air-conditioning refrigeration system includes a heat dissipation module; the mode selection module includes a second switch unit; wherein the heat dissipation module is respectively connected to the second switch unit and the charging gun water cooling outlet branch, and the second switch unit is also connected to the charging gun water cooling inlet branch; the second switch unit is used to turn on or off the connection relationship between the charging gun water cooling inlet branch and the heat dissipation module to select or turn off the second cooling mode.

[0013] In some embodiments, the battery is a direct-cooled battery.

[0014] In some embodiments, the battery is a liquid-cooled battery; the liquid-cooled battery includes a first liquid-cooling plate and a second liquid-cooling plate; wherein, at least one of the first liquid-cooling plate and the second liquid-cooling plate is respectively connected to the charging gun water-cooling inlet branch and the charging gun water-cooling outlet branch through the mode selection module.

[0015] In some embodiments, the charging cooling mode includes a third cooling mode; the mode selection module includes a third switch unit; the first liquid cooling plate is connected to the third switch unit and the charging gun water cooling outlet branch respectively, and the third switch unit is also connected to the charging gun water cooling inlet branch; the third switch unit is used to turn on or off the connection between the charging gun water cooling inlet branch and the first liquid cooling plate to select or turn off the third cooling mode.

[0016] In some embodiments, the charging cooling mode includes a fourth cooling mode; the mode selection module also includes a fourth switch unit; the second liquid cooling plate is connected to the fourth switch unit and the charging gun water cooling outlet branch respectively, and the fourth switch unit is also connected to the charging gun water cooling inlet branch; the fourth switch unit is used to turn on or off the connection relationship between the charging gun water cooling inlet branch and the second liquid cooling plate to select or turn off the fourth cooling mode.

[0017] Correspondingly, an embodiment of the present application also provides a vehicle, including the vehicle charging thermal management device as described above.

[0018] Beneficial effect: Compared with the prior art, the vehicle charging thermal management device and vehicle of the embodiment of the present application, the vehicle charging thermal management device includes: a charging pile liquid cooling system, a mode selection module, an air conditioning refrigeration system, a battery, a charging gun water cooling inlet branch and a charging gun water cooling outlet branch; wherein, the charging pile liquid cooling system is connected to the charging gun water cooling inlet branch and the charging gun water cooling outlet branch respectively; the mode selection module is connected to the charging gun water cooling inlet branch, the charging gun water cooling outlet branch and the air conditioning refrigeration system respectively; the mode selection module is used to select the charging cooling mode of the battery by turning on or off the connection relationship between the charging pile liquid cooling system and the air conditioning refrigeration system. The vehicle charging thermal management device provided by the present application connects the charging pile liquid cooling system to the air conditioning refrigeration system, and selects the appropriate battery cooling mode according to actual needs through the mode selection module to transfer the heat load of the vehicle's air conditioning refrigeration system during battery fast charging to the charging pile liquid cooling system, thereby meeting the cooling capacity demand of the vehicle during fast charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a block diagram of the principle structure of a vehicle charging thermal management device provided in an embodiment of the present application;

[0021] Figure 2 This is a principle structural block diagram of a charging pile liquid cooling system provided in an embodiment of the present application;

[0022] Figure 3 This is a principle structural block diagram of another vehicle charging thermal management device provided in an embodiment of the present application;

[0023] Figure 4 This is a schematic structural diagram of a vehicle charging thermal management device provided in an embodiment of the present application;

[0024] Figure 5 This is a schematic structural diagram of another vehicle charging thermal management device provided in an embodiment of the present application;

[0025] Figure 6 This is a principle structural block diagram of another vehicle charging thermal management device provided in an embodiment of the present application;

[0026] Figure 7 This is a schematic structural diagram of another vehicle charging thermal management device provided in an embodiment of the present application;

[0027] Figure 8 Schematic diagram of a mode selection module provided in an embodiment of the present application;

[0028] Figure 9 This is a principle structural block diagram of another vehicle charging thermal management device provided in an embodiment of the present application;

[0029] Figure 10 This is a schematic structural diagram of another vehicle charging thermal management device provided in an embodiment of the present application;

[0030] Figure 11 This is a principle structural block diagram of another vehicle charging thermal management device provided in an embodiment of the present application;

[0031] Figure 12 It is a structural schematic diagram of another vehicle charging thermal management device provided in an embodiment of the present application.

[0032] Reference numerals:

[0033] 100-Charging pile liquid cooling system; 101-Water storage module 101; 102-Water pump 102; 103-Heat exchange module; 104-First condensing module; 200-Mode selection module; 210-First switch unit; 220-Second switch unit; 230-Third switch unit; 240-Fourth switch unit; 300-Air conditioning and refrigeration system; 310-Second condensing module; 320-Heat dissipation module; 400-Battery; 401-First direct cooling plate; 402-Second direct cooling plate; 410-First liquid cooling plate; 420-Second liquid cooling plate; 500-Charging gun water cooling inlet branch; 600-Charging gun water cooling outlet branch. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0035] It should be understood that although the terms first, second, etc. may be used herein to describe various components, these components should not be limited by these terms. These terms are used to distinguish one component from another. Thus, the first component discussed below could be referred to as the second component without departing from the teachings of the present invention. As used herein, the term "and / or" includes any one and all combinations of one or more of the associated listed items.

[0036] Those skilled in the art will appreciate that the drawings are merely schematic diagrams of exemplary embodiments and may not be to scale. The modules or processes in the drawings are not necessarily required to implement the present application and therefore cannot be used to limit the scope of protection of the present application.

[0037] The applicant's research found that the fast charging time of power batteries is getting shorter and shorter, and a reliable and efficient heat dissipation system is needed to provide energy for the battery super-fast charging technology (for example, peak charging power of 1MW, peak current of 1000A, etc.). The battery cooling of existing electric vehicles during fast charging relies on the air conditioning system of the entire vehicle. However, when in extreme environments (for example, in summer, when the ambient temperature is above 40°C, the coefficient of performance (COP) of the air conditioning system will decrease by 1-2), the cooling capacity of the air conditioning system is often difficult to provide enough cooling capacity to maintain the high-power fast charging performance of the battery, thereby affecting the super-fast charging experience in extreme environments.

[0038] Currently, battery charging rates are increasing, while the cooling capacity of air conditioning systems is limited. Limited by the compressor displacement and the cooling capacity limits of the vehicle's air conditioning, the heat generated by a battery charging at a 10C charging rate is between 60kW and 100kW. In addition to the battery's inherent heat absorption, a large amount of cooling input from the air conditioning is required to maintain efficient and fast charging of the battery. High-rate fast charging technology is characterized by its short duration, so providing sufficient cooling within a short period of time (for example, within 5 minutes) is crucial for optimizing charging time. However, maintaining efficient cooling output of current air conditioning systems in areas with high summer temperatures is a pressing issue.

[0039] Patent CN114865126A, a related technology publication, provides a power battery cooling method, specifically comprising: connecting a power battery to a charging station, configuring a battery cooling system for the power battery, configuring a charging station to a charging cooling system, and connecting the battery cooling system to the charging cooling system. When connected, at least one of the battery cooling system and the charging cooling system is activated based on status information, describing how to switch between the charging gun liquid cooling system and the vehicle's refrigeration system.

[0040] The above-mentioned related technologies are based on air-cooled condensers or water-cooled transitional condensers for heat dissipation. When the ambient temperature is high and the system heat load is high, the performance will deteriorate by 30-40%. This is because it is based on the internal air-conditioning system architecture of the entire vehicle to meet the heat load of the super-fast charging battery. In this case, the cooling capacity of the entire vehicle's air-conditioning system is originally around 20kw in a normal low-temperature environment. In a high-temperature environment (for example, an environment with an ambient temperature above 40°C), and when there is a heat load in the passenger compartment, the cooling capacity that the air-conditioning system can provide to the battery is basically only 10kw, which is basically difficult to meet the ultra-high load of super-fast charging of the battery (the battery generates more than 60kw of heat).

[0041] In view of this, an embodiment of the present application provides a vehicle charging thermal management device and a vehicle. The present application connects the charging pile liquid cooling system to the air-conditioning refrigeration system, and selects a suitable battery cooling mode according to actual needs through a mode selection module to transfer the heat load of the vehicle's air-conditioning refrigeration system to the charging pile liquid cooling system during battery fast charging, thereby meeting the cooling requirements of the vehicle during fast charging and providing a super-fast charging experience.

[0042] Figure 1 This is a block diagram of the principle structure of a vehicle charging thermal management device provided in the embodiment of this application. Figure 1 The vehicle charging thermal management device includes: a charging pile liquid cooling system 100, a mode selection module 200, an air conditioning and refrigeration system 300, a battery 400, a charging gun water cooling inlet branch 500, and a charging gun water cooling outlet branch 600. The charging pile liquid cooling system 100 is connected to the charging gun water cooling inlet branch 500 and the charging gun water cooling outlet branch 600, respectively; the mode selection module 200 is connected to the charging gun water cooling inlet branch 500, the charging gun water cooling outlet branch 600, and the air conditioning and refrigeration system 300, respectively. The mode selection module 200 is used to select the charging cooling mode of the battery 400 by opening or closing the connection between the charging pile liquid cooling system 100 and the air conditioning and refrigeration system 300.

[0043] The battery 400 may be a direct-cooled battery or a liquid-cooled battery. The charging cooling modes of the battery 400 include a first cooling mode, a second cooling mode, a third cooling mode, and a fourth cooling mode.

[0044] The charging pile liquid cooling system 100 is installed in the battery charging pile, and the charging gun water cooling inlet branch 500 and the charging gun water cooling outlet branch 600 are set in the charging gun.

[0045] The charging gun includes a dual-gun charging mode and a single-gun charging mode. In the single-gun charging mode, the charging gun water cooling inlet branch includes a charging gun water interface inlet, and the charging gun water outlet branch includes a charging gun water interface outlet. In the dual-gun charging mode (for example, a single-gun 500A charging gun), the charging gun water cooling inlet branch includes the charging gun 1 water interface inlet and the charging gun 2 water interface inlet, and the charging gun water outlet branch includes the charging gun 1 water interface outlet and the charging gun 2 water interface outlet.

[0046] The air conditioning and refrigeration system 300 is an air conditioning system built into the vehicle.

[0047] Among them, during the charging process of battery 400, especially during fast charging or super fast charging, by setting the battery charging cooling mode, such as any one of the first cooling mode, the second cooling mode, the third cooling mode and the fourth cooling mode, the cooling needs of the battery during fast charging can be met, thermal management of the battery charging process can be achieved, and the super fast charging experience can be met.

[0048] Among them, the first cooling mode is suitable for fast charging cooling in extreme environments (for example, high temperatures up to 40°C in summer). The second cooling mode is suitable for fast charging cooling in an environment where the external ambient temperature is not very high. Among them, the first cooling mode and the second cooling mode are suitable for direct cooling batteries. The third cooling mode and the fourth cooling mode are suitable for liquid-cooled batteries, and the third cooling mode is suitable for charging cooling in super fast charging environments (for example, megawatt flash charging level). The fourth cooling mode is suitable for fast charging environments that require more cooling capacity.

[0049] The selection or switching of the battery charging cooling mode is set by the mode selection module 200. Specifically, the first cooling mode can be selected by setting the mode, the second cooling mode can be selected by setting the mode, the third cooling mode can be selected by setting the mode, and the fourth cooling mode can be selected by setting the mode.

[0050] In the technical solution of the embodiment of the present application, the implementation process of the vehicle charging thermal management device is as follows: when the vehicle is fast charging, the charging cooling mode of the battery can be selected through the mode selection module 200 to ensure that the cooling demand of the battery during fast charging is met. Among them, the selection of various cooling modes can be set according to actual conditions. For example, when the vehicle is fast charging in an extreme environment (for example, a high temperature environment in summer), the first cooling mode is selected through the mode selection module 200 to maintain the cooling demand of the vehicle battery in the extreme environment through the first cooling mode. For example, when the vehicle is fast charging and cooling in an environment where the external ambient temperature is not very high, the second cooling mode is selected through the mode selection module 200 to maintain the cooling demand of the vehicle battery in an environment where the external ambient temperature is not very high through the second cooling mode. In addition, the third cooling mode or the fourth cooling mode can also be selected through the mode selection module 200. As can be seen from this, the vehicle charging thermal management device combines the vehicle's air conditioning refrigeration system with the charging pile liquid cooling system. The charging pile liquid cooling system completes the heat dissipation on the vehicle's air conditioning side. This transfers the heat load from the vehicle's air conditioning refrigeration system to the charging pile liquid cooling system during battery fast charging, thereby meeting the vehicle's cooling capacity and heat exchange requirements during fast charging. This eliminates the need to select an overly large displacement compressor system or increase the number of compressors to maintain the required heat dissipation load, saving costs, contributing to lightweighting, and economical applicability.

[0051] Figure 2 This is a schematic diagram of the principle structure of a charging pile liquid cooling system provided in the embodiments of this application. Figure 2 The charging pile liquid cooling system 100 includes a water storage module 101, a water pump 102, a heat exchange module 103, and multiple pipelines. The water storage module 101 is connected to the water pump 102, which is connected to the heat exchange module 103 and the charging gun water cooling outlet branch 600 via pipelines. The heat exchange module 103 is also connected to the charging gun water cooling inlet branch 500 via pipelines.

[0052] The water storage module 101 is used to store coolant, etc. The water storage module 101 can be a water storage device such as a kettle or a bucket, and can be configured according to actual conditions. For example, the technical solution of the embodiment of this application is described using a kettle as an example, and the same is true below, so it will not be repeated here.

[0053] The heat exchange module 103 is a heat exchanger. For example, the heat exchanger is a chiller plate heat exchanger.

[0054] Specifically, the charging pile liquid cooling system operates as follows: coolant in the water storage module 101 is pumped by the water pump 102 to the heat exchange module 103. After cooling in the heat exchange module 103, the coolant enters the charging gun water inlet branch 500, then returns to the water pump 102 and then to the heat exchange module 103 through the charging gun water outlet branch 600, completing the cycle.

[0055] In single-charger mode, the charging gun side water circuit and the vehicle thermal management system are independent of each other, and the charging thermal management system can circulate independently. Specifically, the coolant in the water storage module 101 is pushed by the water pump 102 and transported to the heat exchange module 103. After cooling in the heat exchange module 103, the coolant is cooled by the charging gun water circuit interface inlet to cool the charging wiring harness, etc., and then returns to the water pump 102 inlet through the charging gun water circuit interface outlet, and then returns to the heat exchange module 103, thus completing the cycle.

[0056] Figure 3 This is a block diagram of the principle structure of another vehicle charging thermal management device provided in an embodiment of the present application. In some embodiments, the charging pile liquid cooling system 100 further includes a first condensing module 104; the air conditioning and refrigeration system 300 includes a second condensing module 310; and the mode selection module 200 includes a first switch unit 210. The first condensing module 104 is connected to the charging gun water cooling inlet branch 500 and the charging gun water cooling outlet branch 600, respectively. The first condensing module 104 is also connected to the second condensing module 310 via the first switch unit 210. The first switch unit 210 is used to connect or disconnect the connection between the first condensing module 104 and the second condensing module 310 to select or disable the first cooling mode.

[0057] The first condensing module 104 is a water-cooled condenser, and the second condensing module 310 is an air-cooled condenser.

[0058] The first switch unit 210 may be a stop valve, a ball valve, or the like. The specific configuration may be determined based on practical needs and is not specifically limited herein. The first switch unit 210 includes one or more combinations of switch valves, such as stop valves and ball valves. The stop valves and ball valves may be one or more in number. The specific configuration may be determined based on practical needs and is not specifically limited herein.

[0059] Among them, the first cooling mode is the dual-gun charging mode - cooling mode through the water-cooled condenser.

[0060] Specifically, the first cooling mode operates as follows: For example, assuming a vehicle is charging in an extreme environment, by controlling the first switch unit 210 to conduct, the first condensing module 104 is connected to the second condensing module 310, so that the coolant output from the charging gun water-cooling inlet branch 500, after being cooled by the heat exchange module 103, can be input into the second condensing module 310 in the air conditioning and refrigeration system 300, thereby providing sufficient cooling capacity for the air conditioning and refrigeration system during the vehicle charging process. The heat load of the vehicle's air conditioning and refrigeration system during battery fast charging is transferred to the charging pile liquid cooling system, thereby meeting the vehicle's cooling capacity and heat exchange requirements during fast charging. In this way, the vehicle's air conditioning compressor system does not need to be overly large in displacement or increase the number of compressors to meet the heat dissipation load requirement, which can save costs, promote lightweighting, and be economical and practical.

[0061] Figure 4 This is a schematic diagram of the structure of a vehicle charging thermal management device provided in an embodiment of the present application. For example, Figure 4 The following is a schematic diagram showing a simple structure of combining the air conditioning refrigeration system and the charging pile liquid cooling system for cooling. Figure 4 The coolant cooled and output by the charging pile liquid cooling system 100 flows into the water channel interface of charging gun 1 and the water channel interface of charging gun 2 respectively, and then merges and flows into the dual-gun charging inlet water channel. It then flows out to the water-cooled condenser through the dual-gun charging inlet water channel, and then flows into the air-cooled condenser through stop valve 2 and stop valve 1 in sequence for heat exchange. After heat exchange, the coolant returns to the charging pile liquid cooling system 100 through the water-cooled condenser and the dual-gun charging outlet water channel, thereby achieving heat exchange for the vehicle battery during fast charging. The heat load of the vehicle's air conditioning and refrigeration system during the battery fast charging process is transferred to the charging pile liquid cooling system, thereby meeting the cooling capacity requirements and heat exchange requirements of the vehicle during fast charging.

[0062] Figure 5 This is a schematic diagram of the structure of another vehicle charging thermal management device provided in an embodiment of the present application. For example, Figure 5 The detailed structural diagram of the combined cooling system of the air conditioning refrigeration system and the charging pile liquid cooling system is shown. Figure 5 The air conditioning and refrigeration system 300 includes a refrigerant circuit and a water circuit. The refrigerant circuit includes a compressor, an in-vehicle condenser, a PTC heater, a second condensing module 310 (i.e., an off-vehicle condenser), a gas-liquid separator, a cooling switching valve, a cooling expansion valve, a condensing switching valve, a heating switching valve, a cooling expansion valve, an evaporator, a battery heating switching valve, a battery cooling switching valve, a battery bidirectional expansion valve, and multiple check valves. The water circuit includes a radiator, a three-way valve, a water pump, an inverter, a motor, a plate heat exchanger, and a switching valve for the plate heat exchanger.

[0063] For example, the first switch unit is Figure 5 The first shut-off valve K1 is shown.

[0064] Specifically, assuming a vehicle is charging in an extreme environment, the first switch unit 210 (i.e., first shut-off valve K1) is controlled to conduct, connecting the first condensing module 104 to the second condensing module 310. In dual-charging mode, the coolant in the water storage module 101 (i.e., kettle) is pumped by water pump 102 to the heat exchange module 103 (i.e., Chiller plate heat exchanger). After cooling in heat exchange module 103, the coolant is divided into two paths, entering the vehicle's air conditioning and refrigeration system through the water interface inlet of charging gun 1 and the water interface inlet of charging gun 2. After merging, the coolant enters the first condensing module (i.e., water-cooled condenser) and exchanges heat with the high-temperature refrigerant in the second condensing module (i.e., air-cooled condenser). It then returns to heat exchange module 103 through the water interface outlets of charging gun 1 and charging gun 2. This provides sufficient cooling capacity for the vehicle's air conditioning and refrigeration system during charging, transferring the heat load of the vehicle's air conditioning and refrigeration system during battery fast charging to the charging pile liquid cooling system, thereby meeting the vehicle's cooling and heat exchange requirements during fast charging. In this way, the selection of the air-conditioning compressor system for the entire vehicle does not need to choose one with too large a displacement, or increase the number of compressors to maintain the heat dissipation load requirement, which can save costs, facilitate lightweighting, and be economical and applicable.

[0065] Figure 6 This is a block diagram of the principle structure of another vehicle charging thermal management device provided in an embodiment of the present application. In some embodiments, the air conditioning and refrigeration system 300 includes a heat dissipation module 320; the mode selection module 200 includes a second switch unit 220; the heat dissipation module 320 is connected to the second switch unit 220 and the charging gun water cooling outlet branch 600, respectively. The second switch unit 220 is also connected to the charging gun water cooling inlet branch 500; the second switch unit 220 is used to connect or disconnect the connection between the charging gun water cooling inlet branch 500 and the heat dissipation module 320 to select or disable the second cooling mode.

[0066] The second switch unit 220 may be a stop valve, a ball valve, or the like. The specific configuration may be determined based on practical needs and is not specifically limited herein. The second switch unit 220 may include one or more combinations of switch valves, such as stop valves and ball valves. The stop valves and ball valves may be one or more in number. The specific configuration may be determined based on practical needs and is not specifically limited herein.

[0067] The heat dissipation module 320 is a low-temperature radiator.

[0068] Among them, the second cooling mode is the dual-gun charging mode - a cooling mode when the external ambient temperature is not high.

[0069] Specifically, the operating principle of the second cooling mode is as follows: For example, assuming the vehicle is charging in a low ambient temperature environment, by controlling the second switch unit 220 to conduct, the charging gun water-cooling inlet branch 500 is connected to the heat dissipation module 320. This allows the coolant output from the charging gun water-cooling inlet branch 500, after being cooled by the heat exchange module 103, to be input into the heat dissipation module 320 in the air conditioning and refrigeration system 300, providing sufficient cooling capacity for the vehicle's air conditioning and refrigeration system during charging. During battery fast charging, the heat load of the vehicle's air conditioning and refrigeration system is transferred to the charging pile liquid cooling system, thereby meeting the vehicle's cooling capacity and heat exchange requirements during fast charging. In this way, the vehicle's air conditioning compressor system does not need to be oversized or increase the number of compressors to meet the required heat dissipation load, which can save costs, promote lightweight design, and be economical and practical. This cooling mode can also improve the system's cooling capacity and is suitable for use in low ambient temperatures. At the same time, this mode can eliminate the need for a water-cooled condenser, simplifying the structure and reducing costs.

[0070] Figure 7 Schematic diagram of another vehicle charging thermal management device provided in the embodiment of the present application. For example, the second switch unit 220 is Figure 7 The second shut-off valve K2 is shown.

[0071] Specifically, assuming the vehicle is charging in a low ambient temperature environment, the second switch unit 220 (i.e., second shut-off valve K2) is controlled to be conductive, connecting the charging gun water-cooling inlet branch 500 to the heat dissipation module 320. In dual-gun charging mode, the coolant in the water storage module 101 (i.e., kettle) is pumped by water pump 102 to the heat exchange module 103 (i.e., Chiller plate heat exchanger). After cooling in the heat exchange module 103, the coolant is divided into two paths, entering the vehicle's air conditioning and cooling system through the water interface inlet of charging gun 1 and the water interface inlet of charging gun 2. After merging, it enters the heat dissipation module 320, exchanges heat with the high-temperature air, and then returns to the heat exchange module 103 through the water interface outlet of charging gun 1 and the water interface outlet of charging gun 2. This provides sufficient cooling capacity for the vehicle's air conditioning and cooling system during charging, transferring the heat load of the vehicle's air conditioning and cooling system during battery fast charging to the charging pile liquid cooling system, thereby meeting the vehicle's cooling and heat exchange requirements during fast charging. In this way, the selection of the air conditioning compressor system for the entire vehicle does not require an excessively large displacement or an increase in the number of compressors to maintain the heat dissipation load requirement, which can save costs, facilitate lightweighting, and be economical and practical. In addition, this cooling mode connects the liquid cooling system of the charging pile in the dual-gun charging mode to the low-temperature heat dissipation system of the motor. The low-temperature coolant in the low-temperature radiator (i.e., the heat dissipation module 320) reduces the temperature of the wind passing through the front-end module. After passing through the low-temperature radiator, the wind will enter the air-cooled condenser (i.e., the second condensing module 310) for heat exchange. This can improve the cooling capacity of the system and is suitable for environments where the external ambient temperature is not very high. This mode can also save the water-cooled condenser component, simplifying the structure and reducing costs.

[0072] For example, in this application Figures 3 to 7 In the embodiment of the present invention, the battery is a direct-cooled battery. For example, see Figure 2 or Figure 4 The direct cooling battery includes a first direct cooling plate 401 and a second direct cooling plate 402. The refrigerant is directly introduced through the first direct cooling plate 401 and the second direct cooling plate 402.

[0073] It should be noted that the mode selection module 200 is a control system distributed on the whole vehicle and the charging pile, and can control the corresponding branch switching valves. The whole vehicle side operates the cooling system of the whole vehicle, and the charging pile operates the liquid cooling circuit of the charging pile to achieve circuit switching (that is, switching of the battery cooling mode) and the purpose of interaction between the cooling systems of the two.

[0074] Figure 8 Schematic diagram of a mode selection module provided in an embodiment of the present application. In addition, the specific structure of the mode selection module 200 can also be adopted as follows Figure 8 Three-way valve 1 shown. See Figure 8Since the liquid-cooled condenser (i.e., the first condensing module 104 mentioned above) and the low-temperature radiator (i.e., the heat dissipation module 320 mentioned above) can be designed in a parallel circuit, a three-way valve is added to achieve the same time. Entering the cooling mode of the low-temperature radiator (i.e., the second cooling mode) requires controlling the three-way valve on the motor side to disconnect the motor water circuit and the low-temperature radiator circuit, that is, to ensure that the low-temperature radiator only passes the coolant of the charging gun.

[0075] Figure 9 This is a block diagram of the principle structure of another vehicle charging thermal management device provided in the embodiments of this application. In some embodiments, please refer to Figure 9 , the battery 400 is a liquid-cooled battery; the liquid-cooled battery includes a first liquid-cooling plate 410 and a second liquid-cooling plate 420; wherein, at least one of the first liquid-cooling plate 410 and the second liquid-cooling plate 420 is connected to the charging gun water-cooling inlet branch 500 and the charging gun water-cooling outlet branch 600 respectively through the mode selection module 200.

[0076] The first liquid cooling plate 410 is an upper liquid cooling plate, and the second liquid cooling plate 420 is a lower liquid cooling plate. Both the first liquid cooling plate 410 and the second liquid cooling plate 420 can be connected to the cooling circuit of the charging pile liquid cooling system.

[0077] In some embodiments, please refer to Figure 9 The mode selection module 200 includes a third switch unit 230; the first liquid cooling plate 410 is connected to the third switch unit 230 and the charging gun water cooling outlet branch 600 respectively, and the third switch unit 230 is also connected to the charging gun water cooling inlet branch 500; the third switch unit 230 is used to turn on or off the connection between the charging gun water cooling inlet branch 500 and the first liquid cooling plate 410 to select or turn off the third cooling mode.

[0078] The third switch unit 230 may be a stop valve, a ball valve, or the like. The specific configuration may be determined based on practical needs and is not specifically limited herein. The third switch unit 230 may include one or more combinations of switch valves, such as stop valves and ball valves. The number of stop valves and ball valves may be one or more. The specific configuration may be determined based on practical needs and is not specifically limited herein.

[0079] It should be noted that the third cooling mode is to connect either the first liquid cooling plate 410 or the second liquid cooling plate 420 to the cooling circuit of the charging pile liquid cooling system. For example, in the present embodiment, the first liquid cooling plate 410 is connected to the cooling circuit of the charging pile liquid cooling system. The specific configuration can be adjusted based on actual conditions and is not specifically limited here.

[0080] Specifically, the working principle of the third cooling mode is as follows: For example, assuming that the vehicle is charging at the megawatt flash charging level, by controlling the third switch unit 230 to be turned on, the charging gun water cooling inlet branch 500 is connected to the first liquid cooling plate 410, so that the coolant output by the charging gun water cooling inlet branch 500 after being cooled by the heat exchange module 103 can be input into the first liquid cooling plate 410 of the liquid-cooled battery, so as to provide sufficient cooling capacity for the air conditioning refrigeration system during the vehicle charging process, and transfer the heat load of the vehicle air conditioning refrigeration system during the battery fast charging process to the charging pile liquid cooling system, thereby meeting the cooling capacity demand and heat exchange demand of the vehicle fast charging process. In this way, the selection of the vehicle's air conditioning compressor system does not need to be too large in displacement or increase the number of compressors to maintain this heat dissipation load requirement, which can save costs, facilitate lightweighting, and be economical and applicable.

[0081] It should be noted that in the third cooling mode, exemplified by the first liquid cooling plate 410 being connected to the cooling circuit of the charging pile liquid cooling system, the first liquid cooling plate 410 does not need to be activated during normal charging rates and is only activated during megawatt flash charging. The second liquid cooling plate 420 is connected to the vehicle's air conditioning and refrigeration system 300 to meet the cooling and heating needs of low-charge-rate charging during driving.

[0082] Figure 10 Schematic diagram of another vehicle charging thermal management device provided in the embodiment of the present application. For example, the third switch unit 230 is Figure 10 The third shut-off valve K3 is shown.

[0083] Specifically, when the vehicle is charged at the megawatt flash charge level, the third switch unit 230 (ie, the third shut-off valve K3) is controlled to be turned on, so that the charging gun water cooling inlet branch 500 is connected to the first liquid cooling plate 410. Figure 10In the dual-gun charging mode, the coolant in the water storage module 101 (i.e., the kettle) is pushed by the water pump 102 and transported to the heat exchange module 103 (i.e., the Chiller plate heat exchanger). After the coolant is cooled by the heat exchange module 103, it is divided into two paths through the water interface inlet of the charging gun 1 and the water interface inlet of the charging gun 2 to enter the air conditioning and refrigeration system of the entire vehicle. After the coolant is merged, it enters the plate heat exchanger Chiller in the air conditioning and refrigeration system 300, and further exchanges heat with the low-temperature refrigerant, and is further cooled. Then, it enters the two liquid cooling plates of the liquid-cooled battery (i.e., the first liquid cooling plate 410 and the second liquid cooling plate 420), and then returns to the heat exchange module 103 through the water interface outlet of the charging gun 1 and the water interface outlet of the charging gun 2. In this way, sufficient cooling capacity can be provided for the air conditioning and refrigeration system during the vehicle charging process, and the heat load of the vehicle air conditioning and refrigeration system during the battery fast charging process is transferred to the charging pile liquid cooling system, thereby meeting the cooling capacity demand and heat exchange demand of the vehicle fast charging process. In this way, the selection of the air-conditioning compressor system for the entire vehicle does not need to choose one with too large a displacement, or increase the number of compressors to maintain the heat dissipation load requirement, which can save costs, facilitate lightweighting, and be economical and applicable.

[0084] Figure 11 This is a block diagram of the principle structure of another vehicle charging thermal management device provided in an embodiment of the present application. In some embodiments, the mode selection module 200 further includes a fourth switch unit 240; the second liquid cooling plate 420 is connected to the fourth switch unit 240 and the charging gun water cooling outlet branch 600, respectively. The fourth switch unit 240 is also connected to the charging gun water cooling inlet branch 500. The fourth switch unit 240 is used to connect or disconnect the connection between the charging gun water cooling inlet branch 500 and the second liquid cooling plate 420 to select or disable the fourth cooling mode.

[0085] The fourth switch unit 240 may be a stop valve, a ball valve, or the like, and may be configured based on practical needs and is not specifically limited herein. The third switch unit 230 may include one or more combinations of switch valves, such as stop valves and ball valves. The stop valves and ball valves may be one or more in number. The configuration may be based on practical needs and is not specifically limited herein.

[0086] It should be noted that when the battery 400 is a liquid-cooled battery, it can be fully connected to two liquid cooling plates according to the actual cooling capacity requirements of the system.

[0087] Specifically, the fourth cooling mode operates as follows: For example, assuming a high cooling capacity requirement for vehicle charging, both the first and second liquid cooling plates 410, 420 can be connected to the cooling circuit of the charging pile liquid cooling system. Specifically, by controlling the third and fourth switch units 230, 240 to be conductive, the charging gun water cooling inlet branch 500 is connected to the first and second liquid cooling plates 410, 420, respectively. This allows the coolant output from the charging gun water cooling inlet branch 500, after being cooled by the heat exchange module 103, to be input to the first and second liquid cooling plates 410, 420 of the liquid-cooled battery, providing sufficient cooling capacity for the vehicle's air conditioning and cooling system during charging. This transfers the heat load of the vehicle's air conditioning and cooling system during battery fast charging to the charging pile liquid cooling system, thereby meeting the vehicle's cooling capacity and heat exchange requirements during fast charging. This eliminates the need to oversize the vehicle's air conditioning compressor system or increase the number of compressors to meet the required heat dissipation load, saving costs and promoting lightweight and economical use.

[0088] Figure 12 Schematic diagram of another vehicle charging thermal management device provided in the embodiment of the present application. For example, the third switch unit 230 is Figure 12 The third stop valve K3 and the fourth switch unit 240 are shown as Figure 12 The fourth shut-off valve K4 is shown.

[0089] Specifically, assuming that the vehicle charging cooling capacity demand is large, by controlling the third switch unit 230 and the fourth switch unit 240 to be turned on, the charging gun water cooling inlet branch 500 is connected to the first liquid cooling plate 410 and the second liquid cooling plate 420 respectively. For example, please refer to Figure 12 In the dual-gun charging mode, the coolant in the water storage module 101 (i.e., the kettle) is pushed by the water pump 102 and transported to the heat exchange module 103 (i.e., the Chiller plate heat exchanger). After the coolant is cooled by the heat exchange module 103, it is divided into two paths through the water interface inlet of the charging gun 1 and the water interface inlet of the charging gun 2 to enter the air conditioning and refrigeration system of the entire vehicle. After the fusion is completed, it enters the plate heat exchanger Chiller in the air conditioning and refrigeration system 300, and then is divided into two paths to enter the first liquid cooling plate 410 and the second liquid cooling plate 420 of the liquid-cooled battery respectively, and then returns to the heat exchange module 103 of the charging pile liquid cooling system 100 through the water interface outlet of the charging gun 1 and the water interface outlet of the charging gun 2. In this way, sufficient cooling capacity can be provided for the air conditioning and refrigeration system during the vehicle charging process, and the heat load of the vehicle air conditioning and refrigeration system during the battery fast charging process is transferred to the charging pile liquid cooling system, thereby meeting the cooling capacity demand of the vehicle fast charging process and meeting the heat exchange demand. In this way, the selection of the air-conditioning compressor system for the entire vehicle does not need to choose one with too large a displacement, or increase the number of compressors to maintain the heat dissipation load requirement, which can save costs, facilitate lightweighting, and be economical and applicable.

[0090] It should be noted that the mode selection module 200 in the embodiment of the present application can be understood as a control system, including a valve system for communication and branch switching, that is, control + implementation. The core control unit of the control system can be set on the charging pile, or on the whole vehicle. No matter where it is placed, or each controls its own, the whole vehicle and the charging pile exchange information through the vehicle communication controller (Electric Vehicle Communication Controller, EVCC). Among them, the interactive information includes the maximum battery temperature, the minimum battery temperature, the total battery voltage, the battery state of charge (State of Charge, SOC), the charging request current, the target cooling demand, the charging gun target water temperature, the charging gun target flow, etc. By combining the control system with the mode selection module 200, the respective inputs and outputs can be transmitted through the interaction of information, and then the instructions are implemented. The specific process is as follows:

[0091] First, determine the battery's adaptable peak charging current. That is, confirm whether the battery currently has high charging rate capabilities (for example, 7C-10C charging rate) and the corresponding cooling requirements. The specific calculation process is as follows:

[0092] Based on the current SOC and current battery temperature, the maximum available cooling capacity (e.g., 18 kW), and the charging MAP, the battery supercharge current path is planned. The current is a predicted path that includes the SOC and battery temperature. The path planned based on the maximum charging capacity is as follows:

[0093] Among them, the charging MAP table (rate) is shown in Table 1.

[0094] Table 1 Charging MAP table

[0095]

[0096] According to the path current and the cell DCR table (based on battery SOC and battery temperature, similar to the charging MAP table), calculate the total heating power of the cell, Q 需求 =I 2 *R* Number of cell strings, where I is the current in A; R is the internal resistance of a single cell in ohms; the number of cell strings is the number of cells in the battery pack, all batteries are connected in series, not in parallel, Q 需求 The unit is W. Calculate the cooling demand of the battery during the entire predicted charging process. This is a demand curve. Based on this, when Q 需求 ≥18kw, the default requirement is 18kw.

[0097] According to the cooling demand and the cooling capacity that can be provided by the vehicle calculated by the vehicle calculation unit, the cooling capacity of the vehicle is calculated based on the current ambient temperature. The cooling capacity is based on the result of the air conditioning refrigeration system 300 calibration, that is, the cooling capacity of the vehicle system Q 整车 Correspond one to one with the ambient temperature and compressor speed to form a correspondence table, Q vehicle = MAP (compressor speed, T ambient temperature), and check according to the maximum capacity.

[0098] Further calculate the load demand of the passenger compartment, and preliminarily calculate Q based on the inlet and outlet air temperature and air volume of the passenger compartment air conditioning evaporator 乘员舱 =Q V *ρ*C p *(T in -T out ), where Q V is the air volume, unit is m3 / s; ρ is the air density, kg / m3; Cp is the air specific heat capacity, unit is J / (kg*℃); Tin is the air inlet temperature, unit is ℃, Tout is the air outlet temperature, unit is ℃. 需求 and Q 整车 and the passenger compartment heat load Q 乘员舱 , calculate the cooling capacity Q that needs to be supplemented by the charging gun 充电枪 , roughly calculate Q according to the empirical formula 充电枪 =Q 需求 -Q 整车 +Q 乘员舱 , Q 充电枪 <1KW, the cooling capacity of the vehicle is sufficient to use the default mode charging gun without intervention, according to Q 充电枪 If the demand is within 1-5kw, the low-temperature radiator mode is used; if the demand is above 5kw, the water-cooled condenser mode is used.

[0099] Similarly, in liquid cooling mode, Q 充电枪 <1KW, the cooling capacity of the vehicle is sufficient to use the default mode charging gun without intervention, according to Q 充电枪 If the demand is within 1-5kw, a single board is used; if the demand is above 5kw, two water-cooling boards are used.

[0100] In addition, the charging gun cooling system further evaluates the input cooling capacity, and the control system further confirms the cooling mode. Taking the direct cooling system as an example, when the ambient temperature is low (for example, T ambient temperature is less than or equal to 25°C), the vehicle cooling capacity is evaluated to be sufficient and greater than a parameter, which confirms that the charging pile cooling system does not enter the vehicle cooling system and operates independently; when the ambient temperature is high, for example, above 25°C and below 35°C (unspecific), according to the passenger compartment load and battery cooling load requirements, the requirements are quantified, and it is determined that a mode of using a low-temperature radiator for heat load transfer (i.e., the second cooling mode) can be entered. The control operation based on this is that the ball valve on the water branch connected to the vehicle end control and the charging gun is opened, and the circuit of the low-temperature radiator is cut off at the same time. The charging pile controller controls the SOV valve or any shut-off valve of the liquid cooling circuit of the charging gun to switch the coolant operation path; when the ambient temperature is too high and above 35°C (unspecific), the charging gun coolant enters the liquid cooling condenser mode (i.e., the first cooling mode).

[0101] In summary, the embodiment of the present application can be connected to the liquid cooling circulation interface on the vehicle through the liquid cooling interface of the charging gun through the charging pile to achieve coupling connection with the power battery cooling system. The charging pile is equipped with a charging cooling system (i.e., a charging pile liquid cooling system), which can dissipate heat for the charging pile and can also be connected to the power battery. In the embodiment of the present application, the liquid cooling system of the charging gun is used to help increase the cooling capacity of the system, so as to achieve the high-load cooling demand of the megawatt flash charging level of the whole vehicle. The advantage of the embodiment of the present application is that the heat dissipation demand of the megawatt flash charging level can be met without increasing the cost of the whole vehicle too much, so as to achieve the fast charging demand of charging for 5 minutes, a cruising range of 400km, a charging rate of 7C-10C, and a peak current of more than 700A. For example, using a direct-cooled battery as an example, in liquid-cooled condenser mode (i.e., the first cooling mode), the charging gun can input a 24kW cooling load. The compressor itself, with a power of 6kW, can produce 18kW of cooling capacity. These combined loads are exactly 24kW, equivalent to the cooling load input by the charging gun. In this case, a charging gun input flow rate of 30L / min and a water temperature of around 25°C can meet our invention's 18kW cooling capacity target. Similarly, if a low-temperature radiator is used (i.e., the second cooling mode), if the ambient temperature is exactly 30°C, the front-end module only needs to cool the 30°C hot air to 25°C. The vehicle's air conditioning system can achieve the 18kW cooling capacity target based on a 6kW compressor power and a normal condensing air temperature of 25°C. Essentially, the charging gun can input a 5kW cooling load to the low-temperature radiator. At this time, the charging gun water temperature needs to be around 15°C, and the water flow rate should be 15L / min. The parameter capabilities of the liquid-cooled battery solution can be deduced in this way. In addition, the vehicle charging thermal management device provided in the present application is flexible and versatile, and can adapt to the heat exchange requirements under various conditions, that is, high-power charging of the entire vehicle in high temperature weather will not be affected by the cooling requirements of the environment and the passenger compartment.

[0102] Correspondingly, an embodiment of the present application also provides a vehicle, which includes the vehicle charging thermal management device described in any embodiment of the present application.

[0103] The vehicle is an electric car, etc., which can be specifically configured according to actual conditions and is not specifically limited here.

[0104] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0105] The above is a detailed introduction to the vehicle charging thermal management device and vehicle provided in the embodiments of the present application, and specific examples are used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application; ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A vehicle charging thermal management device, characterized in that: include: Charging pile liquid cooling system, mode selection module, air conditioning refrigeration system, battery, charging gun water cooling inlet branch and charging gun water cooling outlet branch; The charging pile liquid cooling system is connected to the charging gun water cooling inlet branch and the charging gun water cooling outlet branch respectively; the mode selection module is connected to the charging gun water cooling inlet branch, the charging gun water cooling outlet branch and the air conditioning refrigeration system respectively; The mode selection module is used to select the charging cooling mode of the battery by turning on or off the connection between the charging pile liquid cooling system and the air conditioning refrigeration system.

2. The vehicle charging thermal management device according to claim 1, characterized in that: The charging pile liquid cooling system includes a water storage module, a water pump, a heat exchange module and multiple pipelines; Among them, the water storage module is connected to the water pump, and the water pump is connected to the heat exchange module and the charging gun water cooling outlet branch through the pipeline; the heat exchange module is connected to the charging gun water cooling inlet branch through the pipeline.

3. The vehicle charging thermal management device according to claim 2, characterized in that: The charging cooling mode includes a first cooling mode; the charging pile liquid cooling system also includes a first condensing module; the air-conditioning refrigeration system includes a second condensing module; the mode selection module includes a first switch unit; wherein, the first condensing module is respectively connected to the charging gun water cooling inlet branch and the charging gun water cooling outlet branch, and the first condensing module is also connected to the second condensing module through the first switch unit; the first switch unit is used to turn on or off the connection relationship between the first condensing module and the second condensing module to select or turn off the first cooling mode.

4. The vehicle charging thermal management device according to claim 3, characterized in that: The first condensing module is a water-cooled condenser, and the second condensing module is an air-cooled condenser.

5. The vehicle charging thermal management device according to claim 2, characterized in that: The charging cooling mode includes a second cooling mode; the air-conditioning refrigeration system includes a heat dissipation module; the mode selection module includes a second switch unit; wherein the heat dissipation module is respectively connected to the second switch unit and the charging gun water cooling outlet branch, and the second switch unit is also connected to the charging gun water cooling inlet branch; the second switch unit is used to turn on or off the connection between the charging gun water cooling inlet branch and the heat dissipation module to select or turn off the second cooling mode.

6. The vehicle charging thermal management device according to claim 3 or 5, characterized in that: The battery is a direct-cooled battery.

7. The vehicle charging thermal management device according to claim 2, characterized in that: The battery is a liquid-cooled battery; the liquid-cooled battery includes a first liquid-cooling plate and a second liquid-cooling plate; wherein, at least one of the first liquid-cooling plate and the second liquid-cooling plate is respectively connected to the charging gun water-cooling inlet branch and the charging gun water-cooling outlet branch through the mode selection module.

8. The vehicle charging thermal management device according to claim 7, characterized in that: The charging cooling mode includes a third cooling mode; the mode selection module includes a third switch unit; the first liquid cooling plate is connected to the third switch unit and the charging gun water cooling outlet branch respectively, and the third switch unit is also connected to the charging gun water cooling inlet branch; the third switch unit is used to turn on or off the connection between the charging gun water cooling inlet branch and the first liquid cooling plate to select or turn off the third cooling mode.

9. The vehicle charging thermal management device according to claim 8, characterized in that: The charging cooling mode includes a fourth cooling mode; the mode selection module also includes a fourth switch unit; the second liquid cooling plate is connected to the fourth switch unit and the charging gun water cooling outlet branch respectively, and the fourth switch unit is also connected to the charging gun water cooling inlet branch; the fourth switch unit is used to turn on or off the connection between the charging gun water cooling inlet branch and the second liquid cooling plate to select or turn off the fourth cooling mode.

10. A vehicle, characterized in that: The vehicle charging thermal management device comprises the vehicle charging thermal management device according to any one of claims 1 to 9.

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