Battery cooling system and control method therefor, storage medium, vehicle, and charging pile

Abstract

A battery cooling system comprises: a battery circuit, a charging pile cooling circuit, a first heat exchanger (10), a first connection assembly (11), and a second connection assembly (12), wherein the first connection assembly (11) is connected to the first heat exchanger (10), the second connection assembly (12) is connected to the charging pile cooling circuit, and the second connection assembly (12) is connected to the first connection assembly (11), such that the battery circuit and the charging pile cooling circuit exchange heat via the first heat exchanger (10). Further disclosed are a control method therefor, a storage medium, a vehicle, and a charging pile. When the first connection assembly (11) is connected to the second connection assembly (12), the system enables heat exchange between the charging pile side and the vehicle side via the first heat exchanger (10), preventing contamination of a vehicle-side coolant due to mixing of coolants.

Description

Battery cooling system and control method thereof, storage medium, vehicle and charging pile

[0001] Cross-references to related publications

[0002] This disclosure claims priority to Chinese patent application No. 2024102259419, filed on February 28, 2024, entitled “BATTLE COOLING SYSTEM, CONTROL METHOD THEREOF, STORAGE MEDIUM, VEHICLE AND CHARGING PILOT,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to the field of battery cooling, and in particular to a battery cooling system, a control method for a battery cooling system, a computer-readable storage medium, a vehicle, and a charging pile. Background Art

[0004] For current electric vehicles, charging rate is a key concern for consumers. To address this demand, super-fast charging has become a trend in new energy vehicles. During high-rate fast charging, the battery heats up rapidly, necessitating a high level of cooling power. However, the cooling capacity required during high-rate fast charging far exceeds the maximum cooling capacity required for normal battery system operation. Consequently, thermal management systems are often selected based on this maximum capacity requirement. This results in significant cooling capacity redundancy in all but the most demanding conditions, leading to increased system costs.

[0005] Related technologies use charging piles to perform heat exchange with vehicle-side batteries. Specifically, this involves injecting low-temperature coolant from the charging pile into the battery pack for cooling. However, this has the problem of mixing the coolant from the charging pile and vehicle, which can easily contaminate the vehicle-side coolant. Furthermore, when connecting the charging pile and vehicle, coolant leaks are likely to occur from the plug-in gun.

[0006] Public content

[0007] In view of the above problems, the present disclosure provides a battery cooling system and its control method, storage medium, vehicle and charging pile. The battery circuit at the vehicle end and the charging pile cooling circuit at the pile end exchange heat through a first heat exchanger, rather than directly passing the pile end coolant into the vehicle end. This can achieve that the pile end coolant and the vehicle end coolant are independent of each other during battery fast charging and cooling. The two coolants do not contact or mix with each other, so there is no need to consider the selection of the two coolants, and the coolants will not mix and the vehicle end coolant will not be contaminated by the pile end coolant. In addition, a first connecting component and a second connecting component are provided. When the pile end exchanges heat with the vehicle end, the first connecting component is connected to the second connecting component, and heat is exchanged with the battery circuit through the charging pile cooling circuit.

[0008] In a first aspect, the present disclosure provides a battery cooling system, comprising: a battery circuit, a charging pile cooling circuit, a first heat exchanger, a first connecting component, and a second connecting component, wherein the first connecting component is connected to the first heat exchanger, the second connecting component is connected to the charging pile cooling circuit, and the second connecting component is connected to the first connecting component, so that the battery circuit and the charging pile cooling circuit exchange heat through the first heat exchanger.

[0009] In the technical solution of the embodiment of the present disclosure, when a gun plug signal is detected, the voltage value of the first connection component is detected. When the voltage value of the first connection component is a preset voltage, it indicates that the first connection component and the second connection component are in a connected state, and it is considered that heat is exchanged with the battery circuit through the charging pile cooling circuit. The coolant in the battery circuit exchanges heat with the coolant in the charging pile cooling circuit through the first heat exchanger, which can improve the cooling capacity of the battery during fast charging. At the same time, the vehicle-side coolant (coolant in the battery circuit) and the pile-side coolant (coolant in the charging pile cooling circuit) will not be mixed. The two do not contact each other, and the pile-side coolant will not contaminate the vehicle-side coolant. In addition, the pile-side coolant and the vehicle-side coolant do not need to be of the same model.

[0010] In some embodiments, the first connecting component may include: a first solenoid valve, a first one-way valve and a first connector; the second connecting component includes: a second solenoid valve, a second one-way valve and a second connector; when the first connector and the second connector are connected, the first solenoid valve and the second solenoid valve are in a conducting state, and the coolant in the charging pile cooling circuit flows through the second solenoid valve, the first one-way valve, the first heat exchanger, the first solenoid valve and the second one-way valve in sequence.

[0011] That is to say, the liquid cooling gun connectors at the pile end (second connecting component) and the vehicle end (first connecting component) respectively include a normally closed electromagnetic shut-off valve, a one-way valve and a low-voltage connector (connector). Among them, the water inlet side of the vehicle end is a second one-way valve that only allows water to flow into the inlet, and the water outlet side is a second electromagnetic valve; the water inlet side of the pile end is a first one-way valve that only allows water to flow into the inlet, and the water outlet side is a first electromagnetic valve. When the gun is not inserted (the first connecting component and the second connecting component are not connected), the first one-way valve and the second one-way valve can prevent the coolant from flowing out from the inlet and outlet sides. The first electromagnetic valve and the second electromagnetic valve are not energized and remain normally closed at this time, which can prevent the coolant from flowing out from the water outlet side, thereby preventing the problem of coolant leakage. When the gun is inserted (the first connecting component is connected to the second connecting component), the first connector and the second connector are simultaneously plugged in and locked. At this time, the first electromagnetic valve and the second electromagnetic valve are energized, and the first electromagnetic valve and the second electromagnetic valve are in an open state, thereby connecting the battery circuit and the charging pile cooling circuit.

[0012] In some embodiments, the cooling system further includes a four-way valve disposed in the charging pile cooling circuit, with a first end connected to one end of the charging gun, a second and third ends connected to the second connecting assembly, and a fourth end connected to the other end of the charging gun. The four-way valve is configured such that when the first and third ends are conductive and the second and fourth ends are conductive, the charging pile cooling circuit exchanges heat with the charging gun, and the first heat exchanger exchanges heat with the battery circuit. This allows switching between simultaneous cooling of the charging gun and the battery, or cooling the charging gun alone, by controlling the conduction mode of the four-way valve, with a simple structure.

[0013] In some embodiments, the four-way valve is further configured so that when the first and fourth terminals are connected and the second and third terminals are connected, the charging pile cooling circuit exchanges heat with the charging gun. This allows for heat exchange to be performed on the charging gun alone by switching the four-way valve's connection mode.

[0014] In some embodiments, the cooling system further includes a controller configured to, when the first connecting component is connected to the second connecting component, control the battery's charging rate to a first preset rate; and, when the first connecting component is not connected to the second connecting component, control the battery's charging rate based on the type of charging station and control the vehicle's air conditioning system to perform heat exchange on the battery circuit. This prevents the battery from overheating due to excessive charging rates.

[0015] In some embodiments, the controller is further configured to, if the charging station is a slow charging station, control the battery charging rate to a second preset rate; if the charging station is a fast charging station, control the battery charging rate to a third preset rate; wherein the first preset rate is greater than the third preset rate, and the third preset rate is greater than the second preset rate. Different charging stations select different charging rates to reduce the risk of battery overheating.

[0016] In some embodiments, the first heat exchanger is integrated with the battery, thereby increasing system integration and also increasing the supply range of the battery.

[0017] In a second aspect, the present disclosure provides a control method for a battery cooling system, wherein the battery cooling system includes a battery circuit, a charging pile cooling circuit, a first heat exchanger, a first connecting component and a second connecting component, wherein the first connecting component is connected to the first heat exchanger, and the second connecting component is connected to the charging pile cooling circuit. The control method includes: when a gun plug signal is detected, detecting the voltage value of the first connecting component; when the voltage value of the first connecting component is a preset voltage value, determining that the first connecting component is connected to the second connecting component, and the battery circuit and the charging pile cooling circuit exchange heat through the first heat exchanger.

[0018] In the technical solution of the embodiment of the present disclosure, when a gun plug signal is detected, the voltage value of the first connection component is detected. When the voltage value of the first connection component is a preset voltage, it indicates that the first connection component and the second connection component are in a connected state, and it is considered that heat is exchanged with the battery circuit through the charging pile cooling circuit. The coolant in the battery circuit exchanges heat with the coolant in the charging pile cooling circuit through the first heat exchanger, which can improve the cooling capacity of the battery during fast charging. At the same time, the vehicle-side coolant (coolant in the battery circuit) and the pile-side coolant (coolant in the charging pile cooling circuit) will not be mixed. The two do not contact each other, and the pile-side coolant will not contaminate the vehicle-side coolant. In addition, the pile-side coolant and the vehicle-side coolant do not need to be of the same model.

[0019] In some embodiments, the system also includes a four-way valve, which is arranged on the cooling circuit of the charging pile. The first end of the four-way valve is connected to one end of the charging gun, the second end and the third end of the four-way valve are connected to the second connecting component, and the fourth end of the four-way valve is connected to the other end of the charging gun. The control method also includes: when the first connecting component is connected to the second connecting component, controlling the first end and the third end of the four-way valve to be connected, and the second end and the fourth end to be connected, so that the cooling circuit of the charging pile exchanges heat with the charging gun, and exchanges heat with the battery circuit through the first heat exchanger.

[0020] That is to say, the liquid cooling gun connectors at the pile end (second connecting component) and the vehicle end (first connecting component) respectively include a normally closed electromagnetic shut-off valve, a one-way valve and a low-voltage connector (connector). Among them, the water inlet side of the vehicle end is a second one-way valve that only allows water to flow into the inlet, and the water outlet side is a second electromagnetic valve; the water inlet side of the pile end is a first one-way valve that only allows water to flow into the inlet, and the water outlet side is a first electromagnetic valve. When the gun is not inserted (the first connecting component and the second connecting component are not connected), the first one-way valve and the second one-way valve can prevent the coolant from flowing out from the inlet and outlet sides. The first electromagnetic valve and the second electromagnetic valve are not energized and remain normally closed at this time, which can prevent the coolant from flowing out from the water outlet side, thereby preventing the problem of coolant leakage. When the gun is inserted (the first connecting component is connected to the second connecting component), the first connector and the second connector are simultaneously plugged in and locked. At this time, the first electromagnetic valve and the second electromagnetic valve are energized, and the first electromagnetic valve and the second electromagnetic valve are in an open state, thereby connecting the battery circuit and the charging pile cooling circuit.

[0021] In some embodiments, the control method further includes controlling the connection between the first and fourth terminals of the four-way valve and the connection between the second and third terminals, so that the charging pile cooling circuit exchanges heat with the charging gun. This allows the charging gun to be heat-exchanged separately by switching the connection mode of the four-way valve.

[0022] In some embodiments, the method further includes: when the first connecting component is connected to the second connecting component, controlling the battery's charging rate to a first preset rate; when the first connecting component is not connected to the second connecting component, determining the type of charging station based on the plug-in signal, and controlling the battery's charging rate based on the type of charging station. This can prevent the battery from overheating due to excessive charging rates.

[0023] In some embodiments, controlling the battery charge rate based on the type of charging station includes: if the charging station is a slow charging station, controlling the battery charge rate to a second preset rate; if the charging station is a fast charging station, controlling the battery charge rate to a third preset rate; wherein the first preset rate is greater than the third preset rate, and the third preset rate is greater than the second preset rate. Different charging stations select different charge rates to reduce the risk of battery overheating.

[0024] In some embodiments, when the first connection assembly and the second connection assembly are not connected, the method further includes: controlling the vehicle air conditioning system to perform heat exchange on the battery circuit to lower the temperature of the battery and reduce the risk of battery overheating.

[0025] In a third aspect, the present disclosure provides a computer-readable storage medium storing a control program for a battery cooling system. When the control program for the battery cooling system is executed by a processor, the control method for the battery cooling system is implemented.

[0026] In a fourth aspect, the present disclosure provides a vehicle comprising a memory, a processor, and a control program for a battery cooling system stored in the memory and executable on the processor. When the processor executes the control program for the battery cooling system, the control method for the battery cooling system described above is implemented.

[0027] In a fifth aspect, the present disclosure provides a charging pile, comprising a memory, a processor, and a control program for a battery cooling system stored in the memory and executable on the processor. When the processor executes the control program for the battery cooling system, the above-mentioned control method for the battery cooling system is implemented.

[0028] The above description is only an overview of the technical solution of the present disclosure. In order to more clearly understand the technical aspects of the present disclosure, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present disclosure more obvious and easy to understand, the specific implementation methods of the present disclosure are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present disclosure. The same reference numerals are used throughout the drawings to denote the same components. In the drawings:

[0030] FIG1 is a schematic structural diagram of a battery cooling system according to some embodiments of the present disclosure;

[0031] FIG2 is a schematic diagram of a first connection component and a second connection component according to some embodiments of the present disclosure;

[0032] FIG3 is a schematic diagram illustrating the connection between a first connection component and a second connection component according to some embodiments of the present disclosure;

[0033] FIG4 is a schematic structural diagram of a battery cooling system according to other embodiments of the present disclosure;

[0034] FIG5 is a schematic structural diagram of a battery cooling system according to yet other embodiments of the present disclosure;

[0035] FIG6 is a flow chart of a method for controlling a battery cooling system according to some embodiments of the present disclosure;

[0036] FIG7 is a control logic diagram of a four-way valve in a battery cooling system according to some embodiments of the present disclosure;

[0037] FIG8 is a flow chart of a control method for a battery cooling system according to other embodiments of the present disclosure;

[0038] FIG9 is a block diagram of a vehicle according to some embodiments of the present disclosure;

[0039] FIG10 is a block diagram of a charging pile according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0040] The following embodiments of the technical solution of the present disclosure are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present disclosure and are therefore only examples and are not intended to limit the scope of protection of the present disclosure.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present disclosure belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure; the terms "including" and "having" and any variations thereof in the specification and claims of the present disclosure and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0042] In the description of the embodiments of the present disclosure, technical terms such as "first" and "second" are used solely to distinguish between different objects and should not be understood to indicate or imply relative importance or to implicitly specify the quantity, specific order, or primary and secondary relationship of the technical features indicated. In the description of the embodiments of the present disclosure, "plurality" means more than two, unless otherwise specifically defined.

[0043] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present disclosure. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0044] In the description of the embodiments of the present disclosure, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0045] In the description of the embodiments of the present disclosure, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0046] In the description of the embodiments of the present disclosure, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present disclosure.

[0047] In the description of the embodiments of the present disclosure, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and they can refer to internal connectivity between two components or interaction between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present disclosure based on specific circumstances.

[0048] For current electric vehicles, charging rate is a key concern for consumers, and super-fast charging has become a trend in new energy vehicles to meet this demand. During high-rate fast charging, the battery heats up rapidly, necessitating higher cooling power. However, the cooling capacity required during high-rate fast charging (super-fast charging) is far greater than the maximum cooling capacity required for normal battery system operation. Therefore, thermal management systems are often selected based on this maximum capacity requirement, resulting in significant cooling capacity redundancy in systems other than fast-charge cooling, increasing system costs.

[0049] Related technologies use charging piles to heat exchange the vehicle-side batteries. Specifically, this involves injecting low-temperature coolant from the charging pile into the battery pack for cooling. However, this has the problem of mixing the coolant from the charging pile and the vehicle, which can easily contaminate the vehicle-side coolant. Furthermore, when the charging pile and vehicle are connected, coolant leakage is likely to occur when the charging gun is inserted and removed.

[0050] To this end, the present disclosure uses a first heat exchanger to achieve heat exchange between the battery circuit at the vehicle end and the charging pile cooling circuit at the charging pile end, rather than directly passing the charging pile end coolant into the vehicle end. This allows the charging pile end coolant and the vehicle end coolant to be separated from each other during rapid battery charging and cooling. The two coolants do not contact or mix with each other, so there is no need to consider the selection of the two coolants, and there will be no mixing of the coolants, which will cause the vehicle end coolant to be contaminated by the charging pile end coolant. In addition, a first connecting component and a second connecting component are provided. When the charging pile end performs heat exchange with the vehicle end, the first connecting component is connected to the second connecting component, and heat is exchanged with the battery circuit through the charging pile cooling circuit.

[0051] For the convenience of description, the following embodiments are described by taking the battery cooling system of some embodiments of the present disclosure as an example.

[0052] Please refer to Figure 1. The present disclosure provides a battery cooling system, which may include: a battery circuit, a charging pile cooling circuit, a first heat exchanger 10, a first connecting component 11 and a second connecting component 12. The first connecting component 11 is connected to the first heat exchanger 10, the second connecting component 12 is connected to the charging pile cooling circuit, and the second connecting component 12 is connected to the first connecting component 11, so that the battery circuit and the charging pile cooling circuit exchange heat through the first heat exchanger 10.

[0053] The battery circuit includes a first water pump 32, a third heat exchanger 33, and a second water tank 35. The first water pump 32 provides coolant flow for battery cooling, while the second water tank 35 stores coolant. The vehicle air conditioning system includes a first compressor 31, a first condenser 36, and a third heat exchanger 33. The charging pile cooling circuit includes a first water tank 26, a second water pump 24, a second heat exchanger 22, a second condenser 23, and a second compressor 21. The first water tank 26 stores coolant, while the second water pump 24 provides power for the coolant. When the battery circuit and the charging pile cooling circuit exchange heat through the first heat exchanger 10, the coolant in the charging pile cooling circuit flows as follows: first water tank 26 → charging gun 25 → second water pump 24 → first heat exchanger 10 → second heat exchanger 22 → first water tank 26. The refrigerant in the charging pile cooling circuit flows as follows: second compressor 21 → second condenser 23 → second heat exchanger 22 → second compressor 21. The coolant exchanges heat with the refrigerant through the second heat exchanger 22. The coolant in the battery circuit flows as follows: second water tank 35 → first water pump 32 → first heat exchanger 10 → battery pack 37 → third heat exchanger 33 → second water tank 35. Furthermore, when refrigerant from the air conditioning system is needed to cool the coolant in the battery circuit, the refrigerant in the air conditioning system flows as follows: first compressor 31 → first condenser 36 → third heat exchanger 33 → first compressor 31.

[0054] Specifically, when a gun plug-in signal (a plug-in signal of a liquid-cooled gun) is detected, the voltage value of the first connecting component 11 is detected. When the voltage value of the first connecting component 11 is a preset voltage (such as 12V), it is considered that the first connecting component 11 and the second connecting component 12 are connected, and the battery circuit is heat-exchanged through the charging pile cooling circuit. The coolant in the battery circuit exchanges heat with the coolant in the charging pile cooling circuit through the first heat exchanger 10, which can improve the cooling capacity of the battery during fast charging. At the same time, the vehicle-side coolant (coolant in the battery circuit) and the pile-side coolant (coolant in the charging pile cooling circuit) will not be mixed. The two do not contact each other, and the pile-side coolant will not contaminate the vehicle-side coolant. In addition, the pile-side coolant and the vehicle-side coolant do not need to be of the same model.

[0055] In some embodiments, the voltage value of the first connecting component 11 can also be detected to determine whether the first connecting component 11 and the second connecting component 12 are tightly plugged in, so as to avoid the situation where the battery is not tightly plugged in and is charged at a high rate, and the charging pile cooling circuit cannot exchange heat with the battery circuit, which causes the risk of overheating of the battery.

[0056] In some embodiments, as shown in Figure 2, the first connecting component 11 may include: a first solenoid valve 111, a first one-way valve 112 and a first connecting head 113; the second connecting component 12 may include: a second solenoid valve 121, a second one-way valve 122 and a second connecting head 123; when the first connecting head 113 and the second connecting head 123 are connected, the first solenoid valve 111 and the second solenoid valve 121 are in a conducting state, and the coolant in the charging pile cooling circuit flows through the second solenoid valve 121, the first one-way valve 112, the first heat exchanger 10, the first solenoid valve 111 and the second one-way valve 122 in sequence.

[0057] Specifically, when the liquid cooling gun at the pile end is not docked with the vehicle end (the first connecting component 11 and the second connecting component 12 are not connected), there must be no coolant leakage in the pipes on both sides. When the liquid cooling gun is connected (the first connecting component 11 and the second connecting component 12 are connected), the coolant at the pile end should be able to flow into the first heat exchanger 10 through the liquid cooling gun. At the same time, there must be no coolant leakage when the gun is removed after charging is completed. Therefore, the liquid cooling gun connectors at the pile end (the second connecting component 12) and the vehicle end (the first connecting component 11) respectively include a normally closed solenoid valve, a one-way valve, and a low-voltage connector (connector). Among them, the water inlet side of the vehicle end is a first one-way valve that only allows water to flow into the inlet, and the water outlet side is a first solenoid valve; the water inlet side of the pile end is a second one-way valve that only allows water to flow into the inlet, and the water outlet side is a second solenoid valve. The pile end (the second connecting component 12) also has a power supply positive electrode 12V and a power supply GND to energize the first solenoid valve 111 and the second solenoid valve 121 when the first connecting component 11 and the second connecting component 12 are connected.

[0058] When the gun is not plugged in (the first connecting assembly 11 and the second connecting assembly 12 are not connected), the first connector 113 and the second connector 123 are not connected. The first one-way valve 112 and the second one-way valve 122 can prevent the coolant from flowing out from the inlet and outlet sides. The first solenoid valve 111 and the second solenoid valve 121 are not energized and remain normally closed at this time, which can prevent the coolant from flowing out from the water outlet side, thus preventing the problem of coolant leakage. In addition, when the charging pile is charging the vehicle through the charging gun, the coolant in the charging pile cooling circuit flows from the first water tank 26 → charging gun 25 → second water pump 24 → second connecting assembly 12 → second heat exchanger 22 → first water tank 26. The refrigerant in the charging pile cooling circuit flows from the second compressor 21 → second condenser 23 → second heat exchanger 22 → second compressor 21. This can achieve heat exchange for the charging gun.

[0059] When the gun is inserted (the first connecting component 11 is connected to the second connecting component 12), the first connector 113 and the second connector 123 are simultaneously plugged in and locked. At this time, the first solenoid valve 111 and the second solenoid valve 121 are energized, and the first solenoid valve 111 and the second solenoid valve 121 are in an open state, thereby connecting the battery circuit and the charging pile cooling circuit. As shown in Figure 3, when the first connector 113 and the second connector 123 are connected, the power supply harness of the first solenoid valve 111 and the power supply harness of the second solenoid valve 121 are energized and connected. The power supply circuit is shown in Figure 3. The power supply circuit of the first solenoid valve 111 is 12V→through the second connector 123→through the first connector 113→first solenoid valve 111→through the first connector 113→through the second connector 123→GND. The power supply circuit of the second solenoid valve 121 is 12V→second solenoid valve 121→through the second connector 123→through the first connector 113→through the second connector 123→GND.

[0060] At this point, the coolant in the charging pile cooling circuit flows through the second water pump 24, the second solenoid valve 121, the first check valve 112, the first solenoid valve 111, the second check valve 122, and the second heat exchanger 22. Heat is exchanged between the battery circuit and the charging pile cooling circuit. The coolant in the battery circuit flows from the second water tank 35, the first water pump 32, the first heat exchanger 10, the battery pack 37, the third heat exchanger 33, and the second water tank 35. The coolant in the charging pile cooling circuit flows from the first water tank 26, the charging gun 25, the second water pump 24, the first heat exchanger 10, the second heat exchanger 22, and the first water tank 26. The refrigerant in the charging pile cooling circuit flows from the second compressor 21, the second condenser 23, the second heat exchanger 22, and the second compressor 21. This ensures heat exchange between the battery circuit and the charging gun.

[0061] In some embodiments, the voltage of the power supply harness of the first solenoid valve 111 is also sampled. When the voltage value is a preset voltage value, it is determined that the liquid cooling gun (the first connecting component 11 and the second connecting component 12 are connected) is connected, and the battery circuit and the charging pile cooling circuit are heat exchanged through the first heat exchanger 10.

[0062] In some embodiments, the first condenser 36 and the second condenser 23 select air cooling or water cooling based on actual needs.

[0063] In some embodiments, as shown in Figure 4, the above-mentioned cooling system further includes: a four-way valve 13, the four-way valve 13 is arranged on the charging pile cooling circuit, the first end 1 of the four-way valve 13 is connected to one end of the charging gun 25, the second end 2 and the third end 3 of the four-way valve 13 are connected to the second connecting component 12, and the fourth end 4 of the four-way valve 13 is connected to the other end of the charging gun 25; when the four-way valve 13 is configured so that the first end 1 is connected to the third end 3 and the second end 2 is connected to the fourth end 4, the charging pile cooling circuit exchanges heat with the charging gun 25, and exchanges heat with the battery circuit through the first heat exchanger 10.

[0064] Specifically, when the first connecting assembly 11 and the second connecting assembly 12 are connected, the battery circuit and the charging pile cooling circuit exchange heat through the first heat exchanger 10. The first end 1 and the third end 3 of the four-way valve 13 are connected, and the second end 2 and the fourth end 4 of the four-way valve 13 are connected. The refrigerant in the charging pile cooling circuit is compressed by the second compressor 21, dissipated by the second condenser 23, and converted into low-temperature, low-pressure refrigerant after passing through the throttle valve. This refrigerant then passes through the second heat exchanger 22 to exchange heat with the coolant in the charging pile cooling circuit. The coolant in the charging pile cooling circuit is cooled and converted into low-temperature coolant. This coolant then cools the charging gun and flows into the first heat exchanger 10 through the first end 1 and the third end 3 of the four-way valve. It then exchanges heat with the coolant in the battery circuit, lowering the temperature of the coolant in the battery circuit and cooling the battery. This coolant then flows out through the second end 2 and the fourth end 4 of the four-way valve 13, completing the cycle.

[0065] That is, the coolant flow in the charging pile cooling circuit (dashed arrows) is: first water tank 26 → charging gun 25 → second water pump 24 → four-way valve 13 (first end 1 and third end 3 of four-way valve 13 are connected) → second connecting assembly 12 → first connecting assembly 11 → first heat exchanger 10 → first connecting assembly 11 → second connecting assembly 12 → four-way valve 13 (second end 2 and fourth end 4 of four-way valve 13 are connected) → second heat exchanger 22 → first water tank 26. The refrigerant flow in the charging pile cooling circuit (solid arrows) is: second compressor 21 → second condenser 23 → second heat exchanger 22 → second compressor 21. At this point, the coolant in the charging pile cooling circuit exchanges heat with the battery circuit and charging gun. This allows for simultaneous cooling of the charging gun and battery, as well as cooling of the charging gun alone, by controlling the conduction mode of the four-way valve, with a simple structure.

[0066] It should be noted that when the charging gun and the battery are cooled at the same time, the air-conditioning system only needs to provide cooling capacity for the passenger compartment. At this time, the first water pump 32 should maintain the maximum speed, and the battery should enter the minimum circulation loop (second water tank 35 → first water pump 32 → first heat exchanger 10 → battery pack 37 → third heat exchanger 33 → second water tank 35), allowing the battery to be super-fast charged.

[0067] Thus, heat exchange between the coolant at the pile end and the vehicle end is achieved through the first heat exchanger, and the coolant models at the pile end and the vehicle end do not need to be the same. At the same time, the pile end coolant can be prevented from contaminating the vehicle end coolant.

[0068] In some embodiments, the four-way valve 13 is further configured so that when the first end 1 is connected to the fourth end 4 and the second end 2 is connected to the third end 3, the charging pile cooling circuit exchanges heat with the charging gun.

[0069] Specifically, as shown in Figure 5, when the first connecting component 11 and the second connecting component 12 are not connected, or there is no need to use the charging pile cooling circuit to exchange heat for the battery circuit, the first end 1 and the fourth end 4 of the four-way valve 13 are connected, and the second end 2 and the third end 3 are connected. At this time, only the charging gun is heat exchanged. After the refrigerant in the charging pile cooling circuit is compressed by the second compressor 21, the second condenser 23 dissipates heat and becomes a low-temperature, low-pressure refrigerant after passing through the throttle valve. This part of the refrigerant then passes through the second heat exchanger 22 to exchange heat with the coolant in the charging pile cooling circuit. The coolant in the charging pile cooling circuit is cooled down and becomes a low-temperature coolant. This part of the coolant then cools the charging gun and circulates through the first end 1 and the fourth end 4 of the four-way valve. That is, the refrigerant flow direction (solid arrow) of the charging pile cooling circuit is: second compressor 21 → second condenser 23 → second heat exchanger 22 → second compressor 21; the flow direction (dashed arrow) of the coolant in the charging pile cooling circuit is the first water tank 26 → charging gun 25 → second water pump 24 → four-way valve 13 (the first end 1 and the fourth end 4 are connected) → second heat exchanger 22 → first water tank 26.

[0070] At this point, the vehicle uses the air conditioning system to cool the battery and / or exchange heat with the coolant in the battery circuit to cool the battery. Since the first connecting assembly 11 and the second connecting assembly 12 are not connected, and the four-way valve 13 is connected so that the first end 1 and the fourth end 4 are conductive, and the second end 2 and the third end 3 are conductive, the coolant between the battery circuit and the charging pile cooling circuit does not exchange heat through the first heat exchanger 10. The battery is cooled by the vehicle, using the air conditioning system for heat exchange. The coolant in the battery circuit exchanges heat with the air conditioning system through the third heat exchanger 33. The coolant in the battery circuit flows as follows: second water tank 35 → first water pump 32 → battery pack 37 → third heat exchanger 33 → second water tank 35. The refrigerant circuit in the air conditioning system is as follows: first compressor 31 → first condenser 36 → third heat exchanger 33 → first compressor 31. By switching the connection of the four-way valve, a mode for heat exchange is achieved for the charging pile alone.

[0071] In some embodiments, the above-mentioned cooling system also includes a controller (not specifically shown in the figure), which is configured to control the charging rate of the battery to a first preset rate when the first connecting component 11 is connected to the second connecting component 12; when the first connecting component 11 and the second connecting component 12 are not connected, control the charging rate of the battery according to the type of charging pile, and control the vehicle air-conditioning system to exchange heat for the battery circuit.

[0072] Specifically, the types of charging piles may include slow charging piles, fast charging piles and super charging piles. When the first connecting component 11 is connected to the second connecting component 12, it means that the charging pile is a super charging pile, and the vehicle can be super fast charged. At this time, the charging rate of the battery is relatively large, for example, a first preset rate, to achieve the super fast charging mode of the vehicle. When the first connecting component 11 is not connected to the second connecting component 12, it means that the vehicle can only be charged using the maximum charging rate calibrated based on the vehicle-side cooling capacity. The charging rate of the vehicle is also related to the type of charging pile. The charging rate of the battery is then determined according to the type of charging pile, thereby preventing the battery from being overcharged due to excessive charging rate and overheating. Since the charging pile cooling circuit cannot exchange heat with the battery circuit, it is necessary to exchange heat with the battery circuit through the air conditioning system to keep the temperature of the battery within a normal range during the charging process and improve the battery life.

[0073] In some embodiments, the controller is further configured to, when the charging pile is a slow charging pile, control the charging rate of the battery to a second preset rate; when the charging pile is a fast charging pile, control the charging rate of the battery to a third preset rate; wherein the first preset rate is greater than the third preset rate, and the third preset rate is greater than the second preset rate.

[0074] Specifically, when the gun plug signal is detected, it is also determined whether the charging pile is a fast charging pile. If it is a slow charging pile, the battery charging rate is controlled to the second preset rate to achieve a slow charging mode; if it is a fast charging pile, it is determined whether it is a super charging pile with a charging pile cooling circuit. If not, it means that it is not a super charging pile, and the battery charging rate is controlled to the third preset rate to achieve a conventional fast charging mode. The second preset rate can be the maximum allowable charging rate. If it is a super charging pile with a charging pile cooling circuit, it is determined that the voltage value of the first connecting component 11 is not the preset voltage value. If so, it enters the super fast charging mode and controls the battery charging rate to the first preset rate. Different charging piles select different charging rates to reduce the risk of battery overheating.

[0075] In some embodiments, the first heat exchanger is integrated with the battery, thereby increasing system integration and also increasing the supply range of the battery.

[0076] In some embodiments, the first connecting component 11 is arranged on the charging window side of the battery pack to facilitate the gun insertion operation. At the same time, the length of the liquid cooling pipeline at the charging pile end is required to be shorter and not easy to form tangles.

[0077] As a specific example, as shown in Figures 6 and 7, when the vehicle is charging, it is first detected whether the charging pile connected to the vehicle is a fast charging pile. If not, the slow charging logic is executed; if so, it is determined whether it is a water-cooled super-fast charging pile (with a charging pile cooling circuit). If not, conventional fast charging is performed, and the vehicle side uses the air conditioning cooling system to cool the battery. At the same time, the charging power is limited based on the allowed charging rate calibrated by the capability of the vehicle-side thermal management system. At this time, the charging pile cooling circuit is only responsible for cooling the charging gun and other pile-end components. If it is a water-cooled super-charging pile (with a charging pile cooling circuit), the power supply voltage of the first solenoid valve is detected to determine whether the gun is plugged in. If the gun is not plugged in, conventional fast charging is allowed to be performed. The vehicle-side air conditioning system is responsible for battery cooling. At the same time, the charging rate is limited based on the system capability. At this time, the charging pile cooling circuit is only responsible for cooling the charging gun and other pile-end components. In addition, the vehicle-side large screen and the charging pile-side screen prompt "Currently in conventional fast charging mode, please plug in a liquid-cooled gun if you need super-fast charging". The pile end may also consider giving a voice prompt. If it is detected that the liquid cooling gun is inserted (the first connecting component and the second connecting component are connected), the four-way valve connection changes from 1-4, 2-3 (the first end and the fourth end of the four-way valve are connected, and the second end and the third end are connected) to 1-3, 2-4 (the first end and the third end of the four-way valve are connected, and the second end and the fourth end are connected), and super fast charging is performed at the same time. The low-temperature coolant in the cooling circuit of the charging pile exchanges heat with the coolant in the battery circuit through the first heat exchanger, thereby cooling the battery.

[0078] In summary, by using the charging pile cooling circuit and the battery circuit for heat exchange through the first heat exchanger, the vehicle-side thermal management system capacity and selection do not need to be based on the battery supercharging cooling working condition, which has obvious redundancy. A smaller capacity system can be selected to save costs. The first connecting assembly and the second connecting assembly respectively consist of a normally closed solenoid valve, a one-way valve and a connector. When the gun is not inserted, the one-way valve ensures that the coolant does not flow out of the inlet side. The normally closed solenoid valve is not energized and remains normally closed at this time, ensuring that the coolant does not flow out of the water outlet side, thereby avoiding coolant leakage. When the gun is inserted, the first connector and the second connector are simultaneously plugged in and locked. At this time, the 12V and GND at the pile end can complete the power supply to the first and second solenoid valves, and the solenoid valves open, thereby ensuring the connection of the battery cooling circuit. A four-way valve is set in the charging pile cooling circuit. By switching the connection direction of the four-way valve, the charging gun can be cooled separately, and the charging gun and battery can be cooled simultaneously.

[0079] In a second aspect, the present disclosure provides a control method for a battery cooling system.

[0080] In some embodiments, the battery cooling system includes a battery circuit, a charging pile cooling circuit, a first heat exchanger, a first connecting component arranged corresponding to the first heat exchanger, and a second connecting component arranged in the charging pile cooling circuit. The battery circuit and the charging pile cooling circuit exchange heat through the first heat exchanger.

[0081] As shown in FIG8 , the control method of the battery cooling system according to the embodiment of the present disclosure includes the following steps:

[0082] S101, when a gun insertion signal is detected, detecting a voltage value of a first connecting component.

[0083] S102: When the voltage value of the first connection component is a preset voltage value, determine that the first connection component is connected to the second connection component, and the battery circuit and the charging pile cooling circuit exchange heat through the first heat exchanger.

[0084] In the technical solution of the embodiment of the present disclosure, when a gun plug-in signal (a gun plug-in signal of a liquid-cooled gun) is detected, the voltage value of the first connecting component is detected. When the voltage value of the first connecting component is a preset voltage, it is considered that the first connecting component 11 and the second connecting component 12 are connected, and heat is exchanged with the battery circuit through the charging pile cooling circuit. The coolant in the battery circuit exchanges heat with the coolant in the charging pile cooling circuit through the first heat exchanger, which can improve the cooling capacity of the battery during fast charging. At the same time, the vehicle-side coolant (coolant in the battery circuit) and the pile-side coolant (coolant in the charging pile cooling circuit) will not be mixed. The two do not contact each other, and the pile-side coolant will not contaminate the vehicle-side coolant. In addition, the pile-side coolant and the vehicle-side coolant do not need to be of the same model.

[0085] In some embodiments, the system may further include a four-way valve, which is arranged on the cooling circuit of the charging pile. The first end of the four-way valve is connected to one end of the charging gun, the second end and the third end of the four-way valve are connected to the second connecting component, and the fourth end of the four-way valve is connected to the other end of the charging gun. The control method also includes: when the first connecting component is connected to the second connecting component, controlling the first end and the third end of the four-way valve to be connected, and the second end and the fourth end to be connected, so that the cooling circuit of the charging pile exchanges heat with the charging gun, and exchanges heat with the battery circuit through the first heat exchanger.

[0086] Specifically, when the liquid cooling gun at the pile end is not docked with the vehicle end (the first connecting component and the second connecting component are not connected, that is, the plug-in signal of the liquid cooling gun is detected), there must be no coolant leakage in the pipes on both sides. When the liquid cooling gun is connected (the first connecting component and the second connecting component are connected), the coolant at the pile end should be able to flow into the water-to-water heat exchanger at the vehicle end through the liquid cooling gun. At the same time, there must be no coolant leakage during the process of pulling out the gun after charging. Therefore, in other words, the liquid cooling gun connectors at the pile end (the second connecting component) and the vehicle end (the first connecting component) respectively include a normally closed solenoid valve, a one-way valve and a low-voltage connector (connector). Among them, the water inlet side of the vehicle end is a second one-way valve that only allows water to flow into the inlet, and the water outlet side is a second solenoid valve; the water inlet side of the pile end is a first one-way valve that only allows water to flow into the inlet, and the water outlet side is a first solenoid valve.

[0087] When the gun is not inserted (the first connecting component and the second connecting component are not connected), the first connecting head and the second connecting head are not connected, and the first one-way valve and the second one-way valve can prevent the coolant from flowing out from the inlet side. The first solenoid valve and the second solenoid valve are not energized and remain normally closed at this time, which can prevent the coolant from flowing out from the water outlet side, thereby preventing the problem of coolant leakage.

[0088] When the gun is inserted (the first connecting component is connected to the second connecting component), the first connecting head and the second connecting head are simultaneously plugged in and locked. At this time, the first solenoid valve and the second solenoid valve are energized, and the first solenoid valve and the second solenoid valve are in the open state, thereby connecting the battery circuit and the charging pile cooling circuit.

[0089] In some embodiments, the above control method further includes: controlling the first end and the fourth end of the four-way valve to be connected, and the second end and the third end to be connected, so that the charging pile cooling circuit exchanges heat with the charging gun.

[0090] Specifically, when the first and second connecting assemblies are connected, the battery circuit and the charging pile cooling circuit exchange heat through the first heat exchanger. The first and third ends of the four-way valve are connected, and the second and fourth ends of the four-way valve are connected. The refrigerant in the charging pile cooling circuit is compressed by the second compressor, dissipated by the second condenser, and converted to low-temperature, low-pressure refrigerant after passing through the throttle valve. This refrigerant then passes through the second heat exchanger to exchange heat with the coolant in the charging pile cooling circuit. The coolant in the charging pile cooling circuit is cooled and converted to low-temperature coolant. This coolant then cools the charging gun and flows through the first and third ends of the four-way valve into the first heat exchanger, exchanging heat with the coolant in the battery circuit, lowering the temperature of the coolant there and further cooling the battery. This coolant then flows out through the second and fourth ends of the four-way valve, completing the cycle. Thus, by switching the connection mode of the four-way valve, a mode for heat exchange for the charging gun alone can be achieved.

[0091] When the first and second connecting assemblies are disconnected, or when the charging pile cooling circuit is not needed for heat exchange with the battery circuit, the first and fourth ends of the four-way valve are connected, while the second and third ends are connected. Heat exchange only occurs with the charging gun. The refrigerant in the charging pile cooling circuit is compressed by the second compressor, dissipated by the second condenser, and converted to low-temperature, low-pressure refrigerant after passing through the throttle valve. This refrigerant then exchanges heat with the coolant in the charging pile cooling circuit through the second heat exchanger. The coolant in the charging pile cooling circuit is cooled to low-temperature coolant, which then cools the charging gun and circulates through the first and fourth ends of the four-way valve. At this point, the vehicle uses the air conditioning system to cool the battery and / or exchanges heat with the coolant in the battery circuit to cool the battery. Because the first and second connecting assemblies are disconnected, and the four-way valve is connected with the first and fourth ends connected and the second and third ends connected, the coolant between the battery circuit and the charging pile cooling circuit does not exchange heat through the first heat exchanger.

[0092] In some embodiments, the method further includes: when the first connecting component is connected to the second connecting component, controlling the charging rate of the battery to a first preset rate; when the first connecting component is not connected to the second connecting component, determining the type of the charging pile according to the plug-in signal, and controlling the charging rate of the battery according to the type of the charging pile.

[0093] Specifically, the types of charging piles may include slow charging piles, fast charging piles, and super charging piles. When the first connecting component 11 is connected to the second connecting component 12, it means that the charging pile is a super charging pile, and the vehicle can be super fast charged. At this time, the charging rate of the battery is relatively large, for example, a first preset rate, to achieve the super fast charging mode of the vehicle. When the first connecting component is not connected to the second connecting component, it means that the vehicle can only be charged using the maximum charging rate calibrated based on the vehicle-side cooling capacity. The charging rate of the vehicle is also related to the type of charging pile. The charging rate of the battery is then determined according to the type of charging pile, thereby preventing the battery from being charged at an excessively high rate and overheating.

[0094] In some embodiments, the charging rate of the battery is controlled according to the type of the charging pile, including: when the type of the charging pile is a slow charging pile, controlling the charging rate of the battery to a second preset rate; when the type of the charging pile is a fast charging pile, controlling the charging rate of the battery to a third preset rate; wherein the first preset rate is greater than the third preset rate, and the third preset rate is greater than the second preset rate.

[0095] Specifically, when the gun plug signal is detected, it is also determined whether the charging pile is a fast charging pile. If it is a slow charging pile, the battery charging rate is controlled to the second preset rate to achieve slow charging mode; if it is a fast charging pile, it is determined whether it is a super charging pile with a charging pile cooling circuit. If not, it means that it is not a super charging pile, and the battery charging rate is controlled to the third preset rate to achieve conventional fast charging mode. The third preset rate can be the maximum allowable charging rate. If it is a super charging pile with a charging pile cooling circuit, it is determined that the voltage value of the first connecting component is not the preset voltage value. If so, it enters the super fast charging mode and controls the battery charging rate to the first preset rate. Different charging piles select different charging rates to reduce the risk of battery overheating.

[0096] In some embodiments, when the first connection component is not connected to the second connection component, the method further includes: controlling the vehicle air conditioning system to perform heat exchange on the battery circuit.

[0097] Specifically, since the charging pile cooling circuit cannot exchange heat with the battery circuit, it is necessary to use the air conditioning system to exchange heat with the battery circuit to keep the battery temperature within the normal range during charging, reduce the risk of battery overheating, and increase the battery life.

[0098] It should be noted that for details not disclosed in the control method of the battery cooling system in the embodiment of the present disclosure, please refer to the details disclosed in the battery cooling system in the embodiment of the present disclosure, and the details will not be repeated here.

[0099] In a third aspect, the present disclosure provides a computer-readable storage medium storing a control program for a battery cooling system. When the control program for the battery cooling system is executed by a processor, the control method for the battery cooling system is implemented.

[0100] In a fourth aspect, the present disclosure provides a vehicle.

[0101] As shown in FIG9 , the vehicle 100 of the embodiment of the present disclosure includes a memory 110, a processor 120, and a control program for a battery cooling system stored in the memory 110 and executable on the processor 120. When the processor 120 executes the control program for the battery cooling system, the control method for the battery cooling system described above is implemented.

[0102] In a fifth aspect, the present disclosure provides a charging pile.

[0103] As shown in FIG10 , the charging pile 200 of the present disclosure includes a memory 210 , a processor 220 , and a control program for a battery cooling system stored in the memory 210 and executable on the processor 220 . When the processor 220 executes the control program for the battery cooling system, the above-mentioned control method for the battery cooling system is implemented.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present disclosure, and they should all be included in the scope of the claims and specification of the present disclosure. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present disclosure is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery cooling system comprising: A battery circuit, a charging pile cooling circuit, a first heat exchanger, a first connecting component and a second connecting component, wherein the first connecting component is connected to the first heat exchanger, the second connecting component is connected to the charging pile cooling circuit, and the second connecting component is connected to the first connecting component, so that the battery circuit and the charging pile cooling circuit exchange heat through the first heat exchanger.

2. The cooling system according to claim 1, wherein: in, The first connecting assembly includes: a first solenoid valve, a first one-way valve and a first connecting head; The second connecting assembly includes: a second solenoid valve, a second one-way valve and a second connecting head; When the first connector and the second connector are connected, the first solenoid valve and the second solenoid valve are in a conducting state, and the coolant in the charging pile cooling circuit flows through the second solenoid valve, the first one-way valve, the first heat exchanger, the first solenoid valve and the second one-way valve in sequence.

3. The cooling system according to claim 1, wherein: Also includes: A four-way valve, the four-way valve being provided on the cooling circuit of the charging pile, the first end of the four-way valve being connected to one end of the charging gun, the second and third ends of the four-way valve being connected to the second connecting assembly, and the fourth end of the four-way valve being connected to the other end of the charging gun; When the four-way valve is configured such that the first end is connected to the third end and the second end is connected to the fourth end, the charging pile cooling circuit exchanges heat with the charging gun, and the first heat exchanger exchanges heat with the battery circuit.

4. The cooling system according to claim 3, wherein: The four-way valve is further configured such that when the first end is connected to the fourth end and the second end is connected to the third end, the charging pile cooling circuit exchanges heat with the charging gun.

5. The cooling system according to any one of claims 1 to 4, wherein: It also includes a controller, which is configured to control the charging rate of the battery to a first preset rate when the first connecting component is connected to the second connecting component; control the charging rate of the battery according to the type of charging pile when the first connecting component is not connected to the second connecting component, and control the vehicle air-conditioning system to perform heat exchange on the battery circuit.

6. The cooling system according to claim 5, wherein: The controller is also configured to, when the charging pile is a slow charging pile, control the charging rate of the battery to a second preset rate; when the charging pile is a fast charging pile, control the charging rate of the battery to a third preset rate; wherein the first preset rate is greater than the third preset rate, and the third preset rate is greater than the second preset rate.

7. The cooling system according to claim 5, wherein: The first heat exchanger is integrated with the battery.

8. A control method for a battery cooling system, the battery cooling system comprising a battery circuit, a charging pile cooling circuit, a first heat exchanger, a first connecting assembly, and a second connecting assembly, wherein the first connecting assembly is connected to the first heat exchanger, and the second connecting assembly is connected to the charging pile cooling circuit. The control method comprises: When a gun insertion signal is detected, detecting a voltage value of the first connecting component; When the voltage value of the first connecting component is a preset voltage value, it is determined that the first connecting component is connected to the second connecting component, and the battery circuit and the charging pile cooling circuit exchange heat through the first heat exchanger.

9. The control method according to claim 8, wherein: The system further includes a four-way valve, which is disposed on the charging pile cooling circuit, wherein a first end of the four-way valve is connected to one end of the charging gun, a second end and a third end of the four-way valve are connected to the second connecting assembly, and a fourth end of the four-way valve is connected to the other end of the charging gun. The control method further includes: When the first connecting component is connected to the second connecting component, the first end and the third end, and the second end and the fourth end of the four-way valve are controlled to be connected, so that the charging pile cooling circuit exchanges heat with the charging gun, and the battery circuit is exchanged with heat through the first heat exchanger.

10. The control method according to claim 9, wherein: The control method further includes: The first end and the fourth end of the four-way valve are controlled to be connected, and the second end and the third end are controlled to be connected, so that the charging pile cooling circuit exchanges heat with the charging gun.

11. The control method according to any one of claims 8 to 10, wherein: Also includes: When the first connecting component is connected to the second connecting component, controlling the charging rate of the battery to be a first preset rate; When the first connecting component and the second connecting component are not connected, the type of the charging pile is determined according to the plug-in signal, and the charging rate of the battery is controlled according to the type of the charging pile.

12. The control method according to claim 11, wherein: Controlling the charging rate of the battery according to the type of the charging pile includes: When the charging pile is a slow charging pile, controlling the charging rate of the battery to be a second preset rate; When the charging pile is a fast charging pile, the charging rate of the battery is controlled to be a third preset rate; wherein the first preset rate is greater than the third preset rate, and the third preset rate is greater than the second preset rate.

13. The control method according to any one of claims 8 to 10, wherein: In a case where the first connection component and the second connection component are not connected, the method further includes: The vehicle air conditioning system is controlled to perform heat exchange on the battery circuit. 14 . A computer-readable storage medium storing a control program for a battery cooling system, wherein the control program for the battery cooling system is executed by a processor to implement the control method for the battery cooling system according to claim 8 .

15. A vehicle comprising a memory, a processor, and a battery cooling system control program stored in the memory and executable on the processor, wherein when the processor executes the battery cooling system control program, the battery cooling system control method according to any one of claims 8 to 13 is implemented.

16. A charging pile comprising a memory, a processor, and a control program for a battery cooling system stored in the memory and executable on the processor, wherein when the processor executes the control program for the battery cooling system, the control method for the battery cooling system according to any one of claims 8 to 13 is implemented.

Images