Overcharging auxiliary cooling equipment, vehicle cooling system and vehicle

Abstract

The utility model belongs to the technical field of vehicle charging, and provides an overcharge auxiliary cooling device, a vehicle cooling system and a vehicle. The overcharge auxiliary cooling equipment comprises an auxiliary refrigerant treatment pipeline and a quick self-sealing gun, wherein the quick self-sealing gun comprises a first self-sealing valve and a second self-sealing valve; the first self-sealing valve is connected with the water inlet end of the auxiliary refrigerant treatment pipeline, and the second self-sealing valve is connected with the water outlet end of the auxiliary refrigerant treatment pipeline; the quick self-sealing gun is used for being connected with a self-sealing gun socket in the vehicle, so that a refrigerant in the auxiliary refrigerant treatment pipeline passes through the self-sealing gun socket, flows through a heat exchanger of battery cooling equipment of the vehicle for heat exchange and flows back to the auxiliary refrigerant treatment pipeline, and a closed loop is formed. According to the utility model, the temperature of the battery can be reduced in the over-charging process of the vehicle, and the heat dissipation requirement of high-power charging is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle charging, and more specifically, relates to a supercharging auxiliary cooling device, a vehicle cooling system and a vehicle. Background Art

[0002] In recent years, the growth of new energy vehicles has entered the fast lane, and charging convenience has become the most concerned issue for users. Energy replenishment anxiety is replacing endurance anxiety as a difficulty for the further increase in the penetration rate of new energy vehicles. Improving charging facilities is a necessary condition for the popularization of electric vehicles. Super fast charging, as the biggest accelerator for the popularization of new energy vehicles, has become the focus of competition in the new energy industry.

[0003] During the supercharging process, the vehicle battery will generate a large amount of heat. At this time, the vehicle's original battery cooling equipment can no longer meet the battery's heat dissipation needs. Therefore, more effective measures are needed to quickly and effectively reduce the battery temperature during the supercharging process to meet the heat dissipation needs of high-power charging. Utility Model Content

[0004] The purpose of the utility model is to provide a supercharging auxiliary cooling device, a vehicle cooling system and a vehicle, aiming to reduce the temperature of the battery during the vehicle supercharging process and meet the heat dissipation requirements of high-power charging.

[0005] In a first aspect, an embodiment of the utility model provides a supercharge auxiliary cooling device, comprising: an auxiliary refrigerant processing pipeline and a rapid self-sealing gun, the rapid self-sealing gun comprising a first self-sealing valve and a second self-sealing valve;

[0006] The first self-sealing valve is connected to the water inlet end of the auxiliary refrigerant processing pipeline, and the second self-sealing valve is connected to the water outlet end of the auxiliary refrigerant processing pipeline;

[0007] The quick self-sealing gun is used to connect to the self-sealing gun socket in the vehicle, so that the refrigerant in the auxiliary refrigerant processing pipeline passes through the self-sealing gun socket, flows through the heat exchanger of the vehicle's battery cooling equipment for heat exchange and flows back to the auxiliary refrigerant processing pipeline to form a closed loop.

[0008] In combination with the first aspect, in a possible implementation of the first aspect, the auxiliary refrigerant processing pipeline includes: a compressor, a condenser, a dry liquid receiver, and an electromagnetic expansion valve;

[0009] The compressor, the condenser, the dry liquid receiver and the electromagnetic expansion valve are connected in series in sequence on the auxiliary refrigerant processing pipeline according to the flow direction of the refrigerant.

[0010] In combination with the first aspect, in a possible implementation of the first aspect, the auxiliary refrigerant processing pipeline further includes: a pressure sensor;

[0011] The pressure sensor is arranged between the first self-sealing valve and the compressor.

[0012] In combination with the first aspect, in a possible implementation of the first aspect, the auxiliary refrigerant processing pipeline further includes: a first stop valve;

[0013] The first stop valve is arranged between the second self-sealing valve and the electromagnetic expansion valve.

[0014] In combination with the first aspect, in a possible implementation of the first aspect, the auxiliary refrigerant processing pipeline further includes: a heat dissipation fan;

[0015] The cooling fan is arranged at the condenser.

[0016] In combination with the first aspect, in a possible implementation of the first aspect, the first self-sealing valve and the second self-sealing valve both include: a valve body, a valve seat, and a valve core;

[0017] One end of the valve body is connected to the auxiliary refrigerant processing pipeline, and the other end is the valve port;

[0018] The valve seat is fixed at the middle position of the valve body and is provided with a through hole;

[0019] The valve core is arranged on the valve port side, one end of which contacts the valve seat through a spring, and the other end is clamped at the valve port, so that when the self-sealing gun socket is connected, the valve port is opened by compressing the spring.

[0020] In a second aspect, an embodiment of the utility model provides a vehicle cooling system, comprising: a battery cooling device and a supercharging auxiliary cooling device in the first aspect or any one of the implementations of the first aspect;

[0021] The battery cooling device includes a heat exchanger, a battery cooling circuit, a built-in refrigerant processing circuit, an auxiliary refrigerant heat exchange pipeline and a self-sealing gun socket, and the self-sealing gun socket includes a third self-sealing valve and a fourth self-sealing valve;

[0022] The battery cooling circuit, the built-in refrigerant processing circuit and the auxiliary refrigerant heat exchange pipeline all flow through the heat exchanger for heat exchange;

[0023] The third self-sealing valve is connected to the water inlet end of the auxiliary refrigerant heat exchange pipeline, and the fourth self-sealing valve is connected to the water outlet end of the auxiliary refrigerant heat exchange pipeline.

[0024] In combination with the second aspect, in a possible implementation of the second aspect, the third self-sealing valve and the fourth self-sealing valve both include: a valve body, a valve seat, and a valve core;

[0025] One end of the valve body is connected to the auxiliary refrigerant heat exchange pipeline, and the other end is a valve port;

[0026] The valve seat is fixed at the middle position of the valve body and is provided with a through hole;

[0027] The valve core is arranged on the valve port side, one end of which contacts the valve seat through a spring, and the other end is clamped at the valve port, so that when the quick self-sealing gun is connected, the valve port is opened by compressing the spring.

[0028] In combination with the second aspect, in a possible implementation manner of the second aspect, a water pump, a second stop valve, and a temperature sensor are provided on the battery cooling circuit.

[0029] In a third aspect, an embodiment of the utility model provides a vehicle, comprising a vehicle cooling system as described in the second aspect or any one of the implementations of the second aspect.

[0030] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0031] The embodiment of the utility model provides an external auxiliary heat dissipation solution, and the supercharging auxiliary cooling equipment is independent of the vehicle, easy to move, does not occupy vehicle space, and does not increase vehicle costs. Through the first self-sealing valve and the second self-sealing valve of the quick self-sealing gun, it is connected to the self-sealing gun socket in the vehicle, so that the refrigerant in the auxiliary refrigerant processing pipeline passes through the self-sealing gun socket, flows through the heat exchanger of the battery cooling equipment of the vehicle for heat exchange and flows back to the auxiliary refrigerant processing pipeline, forming a closed loop, so as to achieve the effect of assisting the heat dissipation of the battery cooling equipment in the vehicle. The auxiliary heat dissipation method in which the quick self-sealing gun is connected to the self-sealing gun socket is convenient and simple to operate. The quick self-sealing gun directly introduces the refrigerant of the refrigeration unit into the heat exchanger, which has higher cooling efficiency and better temperature response characteristics, and can quickly and effectively reduce the temperature of the battery pack during the supercharging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the structure of the supercharge auxiliary cooling device provided in the embodiment of the utility model Figure 1 ;

[0033] Figure 2 A schematic diagram of the structure of the supercharge auxiliary cooling device provided in the embodiment of the utility model Figure 2 ;

[0034] Figure 3 Schematic diagram of a quick-connect connector provided by an embodiment of the utility model Figure 1 ;

[0035] Figure 4 Schematic diagram of a quick-connect connector provided by an embodiment of the utility model Figure 2 ;

[0036] Figure 5 Schematic diagram of a quick-connect connector provided by an embodiment of the utility model Figure 3 ;

[0037] Figure 6 A schematic diagram of the structure of a battery cooling device provided by an embodiment of the utility model;

[0038] Explanation of the accompanying drawings: quick self-sealing gun 10, auxiliary refrigerant processing pipeline 20, self-sealing gun socket 30, battery cooling equipment 40, first self-sealing valve 101, second self-sealing valve 102, third self-sealing valve 301, fourth self-sealing valve 302, compressor 201, condenser 202, dry liquid storage device 203, electromagnetic expansion valve 204, pressure sensor 205, first stop valve 206, cooling fan 207, valve body 1001, valve seat 1002, valve core 1003, heat exchanger 401, auxiliary refrigerant heat exchange pipeline 402, water pump 403, second stop valve 404, temperature sensor 405, liquid replenishing tank 406, battery pack 407, one-way valve 408, compressor 409, condenser 410, dryer 411, electromagnetic expansion valve 412, electromagnetic valve 413. DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] Charging piles are divided into slow charging, fast charging, and super charging according to different charging speeds. Slow charging is mainly AC charging, while fast charging and super charging are high-voltage charging methods based on DC charging technology. The charging power of fast charging is usually less than or equal to 250 kilowatts. Super charging can generally reach a charging power of more than 480 kilowatts.

[0041] During the supercharging process, the vehicle battery will generate a lot of heat, and the temperature of the electric vehicle's power battery pack not only affects the battery performance, but also endangers the safety performance of the entire vehicle. A good battery thermal management system not only provides a suitable operating temperature environment for the battery pack at all times, but also improves the battery's charging and discharging performance, ensuring cycle life and safety. At the same time, because the high-power charging current is large and the battery heats up seriously, when the battery temperature is higher than a certain value, an overtemperature alarm will appear. For battery protection, charging will be stopped and the charging power will be limited. This not only fails to ensure that the battery can be charged quickly, but also reduces the battery's service life. Therefore, existing electric vehicles cannot achieve supercharging due to the limitations of their own cooling system.

[0042] In order to solve the above problems, the present invention provides a supercharge auxiliary cooling device, see Figure 1 As shown, the device comprises: a rapid self-sealing gun 10 and an auxiliary refrigerant processing pipeline 20. The rapid self-sealing gun 10 comprises a first self-sealing valve 101 and a second self-sealing valve 102.

[0043] The first self-sealing valve 101 is connected to the water inlet end of the auxiliary refrigerant processing pipeline 20 , and the second self-sealing valve 102 is connected to the water outlet end of the auxiliary refrigerant processing pipeline 20 .

[0044] At the same time, the vehicle is equipped with a battery cooling device 40. By setting a self-sealing gun socket 30 on the vehicle, the self-sealing gun socket 30 is connected to the heat exchanger in the battery cooling device 40 through a pipeline. After the quick self-sealing gun 10 is connected to the self-sealing gun socket 30 in the vehicle, the auxiliary refrigerant processing pipeline 20 forms a closed loop, and the refrigerant flows through the heat exchanger to assist the battery cooling device 40 in dissipating battery heat.

[0045] The refrigerant can flow through the heat exchanger of the battery cooling device 40 of the vehicle through the self-sealing gun socket 10 for heat exchange, and then flow back to the auxiliary refrigerant processing pipeline 20 for refrigeration, and so on, to achieve the effect of assisting the battery cooling device 40 in the vehicle to dissipate heat. Since the quick self-sealing gun 10 directly introduces the refrigerant of the refrigeration unit into the heat exchanger, the cooling efficiency is higher and the temperature response characteristics are better, which can quickly and effectively reduce the battery pack temperature during the supercharging process.

[0046] Moreover, from the perspective of vehicle operation, such a large heat dissipation power is usually only required under supercharging conditions. Under slow charging and fast charging conditions, the vehicle's own battery cooling device 40 is sufficient to meet the battery's heat dissipation needs. If the heat dissipation system is upgraded on the vehicle side, it will undoubtedly increase the cost of the vehicle, and the performance of the heat dissipation system will be difficult to fully utilize. At the same time, for vehicle operation, it will increase the quality of the vehicle, reduce the energy efficiency of the vehicle, and make it difficult to implement the space layout of the vehicle side. For heavy trucks, if the heat dissipation power of the on-board battery is increased, it will occupy space on the vehicle and reduce the cargo capacity, which is not worth the loss.

[0047] In the external auxiliary heat dissipation solution of this embodiment, the supercharging auxiliary cooling device is independent of the vehicle. When the vehicle is supercharging, the refrigerant of the refrigeration unit is directly introduced into the heat exchanger of the battery cooling device 40 through the quick-plug connector (quick self-sealing gun 10 and self-sealing gun socket 30). It is simple to operate, does not occupy vehicle space, and can be shared, which is very convenient.

[0048] Here, the supercharge auxiliary cooling device can be installed near the charging device (such as a charging pile) and connected to the vehicle together with the charging device. The supercharge auxiliary cooling device can also form an integrated device with the charging device, that is, the supercharge auxiliary cooling device is integrated into the charging device. The supercharge auxiliary cooling device can also be an independent cabinet with universal wheels installed at the bottom for easy movement at any time.

[0049] In addition, the quick self-sealing gun 10 can be separate, in which case the vehicle needs to have two sockets, one for charging and one for connecting to the quick self-sealing gun 10. The quick self-sealing gun 10 can also be designed together with the charging gun, in which case the corresponding two socket positions in the vehicle are also designed together, and the supercharging auxiliary cooling device is also connected while the charging gun is plugged in.

[0050] It can be seen that the embodiment of the utility model provides an external auxiliary heat dissipation solution, and the supercharging auxiliary cooling equipment is independent of the vehicle, easy to move, does not occupy the vehicle space, and does not increase the vehicle cost. Through the first self-sealing valve and the second self-sealing valve of the quick self-sealing gun, it is connected to the self-sealing gun socket in the vehicle, so that the refrigerant in the auxiliary refrigerant processing pipeline passes through the self-sealing gun socket, flows through the heat exchanger of the battery cooling equipment of the vehicle for heat exchange and flows back to the auxiliary refrigerant processing pipeline, forming a closed loop, so as to achieve the effect of assisting the heat dissipation of the battery cooling equipment in the vehicle. The auxiliary heat dissipation method in which the quick self-sealing gun is connected to the self-sealing gun socket is convenient and simple to operate. The quick self-sealing gun directly introduces the refrigerant of the refrigeration unit into the heat exchanger, which has higher cooling efficiency and better temperature response characteristics, and can quickly and effectively reduce the temperature of the battery pack during the supercharging process.

[0051] This embodiment does not limit the specific structure of the auxiliary refrigerant processing pipeline 20.

[0052] For example, Figure 2 In the illustrated embodiment, the auxiliary refrigerant processing circuit 20 includes a compressor 201 , a condenser 202 , a dry liquid receiver 203 and an electromagnetic expansion valve 204 .

[0053] The compressor 201, the condenser 202, the dry liquid receiver 203 and the electromagnetic expansion valve 204 are sequentially connected in series to the auxiliary refrigerant processing pipeline 20 according to the flow direction of the refrigerant.

[0054] In this embodiment, the supercharge auxiliary cooling device also includes a controller. When the quick self-sealing gun 10 is plugged in place, the quick-plug connector is in an open circulation state, and the controller of the supercharge auxiliary cooling device also exchanges signal information with the vehicle controller through the communication line of the quick self-sealing gun 10. The vehicle controller sends the water temperature value in and out of the battery pack to the controller of the supercharge auxiliary cooling device. The controller enables the compressor 201, the electromagnetic expansion valve 204, etc. according to the inlet and outlet water temperature of the battery pack. For example, the opening of the electromagnetic expansion valve 204 is regulated according to the outlet water temperature, and the heat dissipation is controlled to the target value, thereby meeting the heat dissipation requirements of the battery pack during supercharging. Among them, the compressor 201 is used to pressurize the refrigerant, the condenser 202 and the cooling fan 207 reduce the refrigerant to a low temperature state, and dry it through the drying liquid storage 203. The heat dissipation intensity can be controlled by adjusting the opening of the electromagnetic expansion valve 204.

[0055] Optionally, the auxiliary refrigerant processing pipeline 20 further includes: a pressure sensor 205 ; the pressure sensor 205 is arranged between the first self-sealing valve 101 and the compressor 201 .

[0056] Here, the pressure sensor 205 is used to monitor the pressure of the auxiliary refrigerant processing pipeline 20. Then, the relevant personnel can adjust the pressure through the pressure monitored by the pressure sensor 205 to control the pressurization of the compressor 201, thereby ensuring the normal operation of the cooling equipment. Among them, the supercharge auxiliary cooling equipment in this embodiment can also include an alarm, and the pressure sensor 205 is connected to the alarm. When overpressure or pressure loss occurs, the alarm reports a fault, so that the relevant personnel can handle the fault in time and improve the efficiency of fault resolution.

[0057] Optionally, the auxiliary refrigerant processing pipeline 20 further includes: a first stop valve 206 ; the first stop valve 206 is arranged between the second self-sealing valve 102 and the electromagnetic expansion valve 204 .

[0058] Here, the first stop valve 206 is connected to the controller of the supercharge auxiliary cooling device, and the supercharge auxiliary cooling device can control the on-off of the first stop valve 206 to realize the on-off of the auxiliary refrigerant processing pipeline 20. For example, when a refrigerant leak occurs in the auxiliary refrigerant processing pipeline 20, the pressure sensor 205 detects that the circuit pressure is abnormal, and then controls the first stop valve 206 to close urgently.

[0059] Optionally, the auxiliary refrigerant processing pipeline 20 further includes: a heat dissipation fan 207 ; the heat dissipation fan 207 is arranged at the condenser 202 .

[0060] In this embodiment, a heat dissipation fan 207 is further provided to further adjust the cooling efficiency. The speed of the heat dissipation fan 207 is adjustable, and the higher the speed, the higher the cooling efficiency.

[0061] For example, a temperature sensor may be provided in the vehicle to measure the inlet and outlet water temperatures of the battery pack. Relevant personnel determine the rotation speed of the cooling fan 207 based on the inlet and outlet water temperatures of the battery pack, such as high rotation speed when the water temperature is high and slow rotation speed when the water temperature is low.

[0062] Figures 3 to 5 It is a structural schematic diagram of a quick-plug connector provided in an embodiment of the utility model.

[0063] The quick self-sealing gun and the self-sealing gun socket both include two self-sealing valves, which are similar in structure, and differ only in the joint of the valve ports. The quick self-sealing gun 10 includes a first self-sealing valve 101 and a second self-sealing valve 102, and the self-sealing gun socket 30 includes a third self-sealing valve 301 and a fourth self-sealing valve 302. When connected, the first self-sealing valve 101 is connected to the fourth self-sealing valve 302, and the second self-sealing valve 102 is connected to the third self-sealing valve 301. The refrigerant flows from the second self-sealing valve 102 into the third self-sealing valve 301 and enters the heat exchanger for heat exchange, and then flows from the fourth self-sealing valve 302 into the first self-sealing valve 101 and enters the auxiliary refrigerant processing pipeline 20.

[0064] Each self-sealing valve includes: a valve body 1001 , a valve seat 1002 and a valve core 1003 .

[0065] One end of the valve body 1001 is connected to the pipeline, and the other end is a butt-jointed valve port.

[0066] The valve seat 1002 is fixed at the middle position of the valve body 1001 and is provided with a through hole to facilitate the circulation of the refrigerant.

[0067] The valve core 1003 is arranged on the valve port side, one end of which contacts the valve seat 1002 through a spring, and the other end is clamped at the valve port, so that when the self-sealing gun socket is connected, the valve port is opened by compressing the spring.

[0068] like Figure 4 As shown in the figure, when the quick self-sealing gun is plugged in, the two valve ports are connected to push the valve core back, the valve port is opened, the medium flows, and the connected self-sealing valve forms a passage. When the quick self-sealing gun is pulled out, the two valve ports are disconnected, and under the action of the spring and the medium force, the valve core returns to its position, and the valve port is sealed by the O-ring, the medium is cut off, and the self-sealing valves are closed to prevent the refrigerant from flowing out.

[0069] The supercharging auxiliary cooling device is connected to the on-board battery cooling device through a designed self-sealing valve structure. The valves at both ends automatically open and close when connected and disconnected, which is convenient and can avoid refrigerant loss.

[0070] An embodiment of the utility model provides a vehicle cooling system, comprising: a battery cooling device and the above-mentioned supercharging auxiliary cooling device.

[0071] In this embodiment, in order to cooperate with the use of the above-mentioned supercharging auxiliary cooling device, the original battery cooling device of the vehicle is simply modified.

[0072] like Figure 6 As shown:

[0073] The battery cooling device includes: a heat exchanger 401, a battery cooling circuit, a built-in refrigerant processing circuit, an auxiliary refrigerant heat exchange pipeline 402 and a self-sealing gun socket 30, and the self-sealing gun socket 30 includes a third self-sealing valve 301 and a fourth self-sealing valve 302. The third self-sealing valve 301 is connected to the water inlet end of the auxiliary refrigerant heat exchange pipeline 402, and the fourth self-sealing valve 302 is connected to the water outlet end of the auxiliary refrigerant heat exchange pipeline 402. The structural principles of the third self-sealing valve 301 and the fourth self-sealing valve 302 can refer to the description of the above embodiment, and will not be repeated in this embodiment.

[0074] The battery cooling circuit, the built-in refrigerant processing circuit and the auxiliary refrigerant heat exchange line 402 all flow through the heat exchanger 401 for heat exchange.

[0075] Optionally, the battery cooling circuit is provided with a water pump 403, a second stop valve 404 and at least one temperature sensor 405. The refill tank 406 is used to refill the battery cooling circuit, and the refrigerant flows through the battery pack 407 to cool the battery, and then exchanges heat through the heat exchanger 401.

[0076] The structure and function of the built-in refrigerant processing circuit are basically consistent with those of the auxiliary refrigerant processing pipeline 20. For example, it includes: a one-way valve 408, a compressor 409, a condenser 410, a dryer 411, an electromagnetic expansion valve 412, an electromagnetic valve 413, etc. The specific structure varies according to the design of different vehicle models, and this embodiment does not specifically limit it.

[0077] In this embodiment, the vehicle's built-in battery cooling device cooperates with an external supercharging auxiliary cooling device to assist the battery cooling device in dissipating heat when the battery is supercharged. The supercharging auxiliary cooling device uses refrigerant cooling and is connected to the battery cooling device through a quick-plug connector. The valves at both ends automatically open and close when connected and disconnected, which is convenient and can avoid the loss of refrigerant. This embodiment solves the problem of insufficient heat dissipation capacity of the vehicle, thereby realizing the supercharging of the vehicle without taking up space on the vehicle. This embodiment also solves the problems of plugging in the external cooling system and the on-board cooling system, and the refrigerant disconnection and sealing, providing strong technical support for the development of supercharging of new energy vehicle batteries.

[0078] An embodiment of the utility model further provides a vehicle, comprising the vehicle cooling system as described above.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A supercharge auxiliary cooling device, characterized in that: include: An auxiliary refrigerant processing pipeline and a quick self-sealing gun, wherein the quick self-sealing gun includes a first self-sealing valve and a second self-sealing valve; The first self-sealing valve is connected to the water inlet end of the auxiliary refrigerant processing pipeline, and the second self-sealing valve is connected to the water outlet end of the auxiliary refrigerant processing pipeline; The quick self-sealing gun is used to connect to the self-sealing gun socket in the vehicle, so that the refrigerant in the auxiliary refrigerant processing pipeline passes through the self-sealing gun socket, flows through the heat exchanger of the battery cooling equipment of the vehicle for heat exchange and flows back to the auxiliary refrigerant processing pipeline to form a closed loop.

2. The supercharge auxiliary cooling device according to claim 1, characterized in that: The auxiliary refrigerant processing pipeline includes: a compressor, a condenser, a dry liquid receiver and an electromagnetic expansion valve; The compressor, the condenser, the dry liquid receiver and the electromagnetic expansion valve are connected in sequence according to the flow direction of the refrigerant.

3. The supercharge auxiliary cooling device according to claim 2, characterized in that: The auxiliary refrigerant processing pipeline also includes: a pressure sensor; The pressure sensor is disposed between the first self-sealing valve and the compressor.

4. The supercharge auxiliary cooling device according to claim 2, characterized in that: The auxiliary refrigerant processing pipeline further includes: a first stop valve; The first stop valve is arranged between the second self-sealing valve and the electromagnetic expansion valve.

5. The supercharge auxiliary cooling device according to claim 2, characterized in that: The auxiliary refrigerant processing pipeline also includes: a heat dissipation fan; The heat dissipation fan is arranged at the condenser.

6. The supercharge auxiliary cooling device according to claim 1, characterized in that: The first self-sealing valve and the second self-sealing valve each comprise: a valve body, a valve seat and a valve core; One end of the valve body is connected to the auxiliary refrigerant processing pipeline, and the other end is a valve port; The valve seat is fixed at the middle position of the valve body and is provided with a through hole; The valve core is arranged on the valve port side, one end of which contacts the valve seat through a spring, and the other end is clamped at the valve port, so that when the self-sealing gun socket is connected, the valve port is opened by compressing the spring.

7. A vehicle cooling system, characterized in that: include: A battery cooling device and a supercharging auxiliary cooling device as claimed in any one of claims 1 to 6; The battery cooling device includes a heat exchanger, a battery cooling circuit, a built-in refrigerant processing circuit, an auxiliary refrigerant heat exchange pipeline and a self-sealing gun socket, and the self-sealing gun socket includes a third self-sealing valve and a fourth self-sealing valve; The battery cooling circuit, the built-in refrigerant processing circuit, and the auxiliary refrigerant heat exchange pipeline all flow through the heat exchanger to exchange heat; The third self-sealing valve is connected to the water inlet end of the auxiliary refrigerant heat exchange pipeline, and the fourth self-sealing valve is connected to the water outlet end of the auxiliary refrigerant heat exchange pipeline.

8. The vehicle cooling system according to claim 7, characterized in that The third self-sealing valve and the fourth self-sealing valve both include: a valve body, a valve seat and a valve core; One end of the valve body is connected to the auxiliary refrigerant heat exchange pipeline, and the other end is a valve port; The valve seat is fixed at the middle position of the valve body and is provided with a through hole; The valve core is arranged on the valve port side, one end of which contacts the valve seat through a spring, and the other end is clamped at the valve port, so that when the rapid self-sealing gun is connected, the valve port is opened by compressing the spring.

9. The vehicle cooling system according to claim 7, characterized in that: The battery cooling circuit is provided with a water pump, a second stop valve and a temperature sensor.

10. A vehicle, characterized in that: Comprising a vehicle cooling system as claimed in any one of claims 7 to 9.

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