Battery pack tray, battery pack and vehicle
By setting flow channels and heat dissipation sections on the battery pack tray, and utilizing the contact heat exchange between the coolant and the external airflow, the problem of limited heat dissipation area in the prior art is solved, achieving efficient heat dissipation of the battery pack and vehicle, and reducing power consumption.
Patent Information
- Application Number
- CN202423314674.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2034-12-30
AI Technical Summary
In existing technologies, automotive coolant cooling structures rely on cooling modules and fan devices, which have limited heat dissipation area, resulting in high power consumption and low thermal management efficiency.
A first flow channel and a heat dissipation section are set on the battery pack tray. When the coolant flows through the first flow channel, it contacts the external airflow through the heat dissipation section to exchange heat. Combined with the heat dissipation fins and heat dissipation metal layer with thermally conductive connection, efficient heat dissipation is achieved.
Without taking up extra space, it improves the heat dissipation efficiency of the battery pack and the vehicle, reduces power consumption, and enhances the performance of the battery pack and the vehicle.
Smart Images
Figure CN223884475U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the field of electric vehicle manufacturing, in particular, to a battery pack tray, a battery pack and a vehicle. BACKGROUND
[0002] The current mainstream vehicle cooling liquid heat dissipation structure usually relies on the heat dissipation module and fan device inside the vehicle to dissipate heat. Specifically, the cooling liquid flows through the heat dissipation module through the pipeline, and then the fan device actively blows the heat dissipation module to take away the heat of the cooling liquid. However, the heat dissipation area of the heat dissipation module inside the vehicle is limited, and the fan device needs to be used, which is not conducive to saving vehicle power and efficient heat management. CONTENT OF THE UTILITY MODEL
[0003] The purpose of the present disclosure is to provide a battery pack tray, a battery pack and a vehicle to at least partially solve the technical problems existing in the related art.
[0004] In order to achieve the above purpose, a battery pack tray is provided, comprising a tray body for supporting an electric cell module, a first flow channel for circulating cooling liquid is arranged in the tray body, a heat dissipation part for contacting and exchanging heat with external air is arranged on the side of the tray body away from the electric cell module, and the heat dissipation part is in thermal connection with the first flow channel.
[0005] Optionally, the heat dissipation part comprises heat dissipation fins protruding from the side of the tray body away from the electric cell module, and / or a heat dissipation metal layer covering the surface of the side of the tray body away from the electric cell module.
[0006] Optionally, the extension direction of the heat dissipation fins is parallel to the length direction of the battery pack tray, wherein the battery pack tray is rectangular, and the length direction of the battery pack tray is parallel to the front-rear direction of the vehicle.
[0007] Optionally, the tray body comprises a cooling plate and a heat dissipation plate arranged in sequence, the cooling plate is arranged on the side of the tray body close to the electric cell module, the cooling plate is provided with a second flow channel for circulating refrigerant, the heat dissipation plate is in thermal connection with the cooling plate through a thermal conductive adhesive layer, and the heat dissipation plate is provided with the first flow channel and the heat dissipation part.
[0008] Optionally, the tray body comprises a heat dissipation plate, a first interface and a second interface, the heat dissipation plate is arranged on the side of the tray body away from the electric cell module, the heat dissipation plate is provided with the first flow channel and the heat dissipation part, the first flow channel is communicated between the first interface and the second interface, and the first interface and the second interface are used to connect the cooling liquid pipeline, so that the cooling liquid pipeline and the first flow channel form a cooling loop.
[0009] In a second aspect of the present disclosure, a battery pack is provided, comprising the battery pack tray and the battery cell module as described above.
[0010] In a third aspect of the present disclosure, a vehicle is provided, comprising the battery pack as described above.
[0011] Optionally, the vehicle further comprises a cooling liquid pipeline and a first electromagnetic valve connected between the cooling liquid pipeline and the first flow channel, the first electromagnetic valve being capable of selectively connecting or disconnecting the cooling liquid pipeline and the first flow channel, a water pump and a motor assembly being arranged on the cooling liquid pipeline, and when the cooling liquid pipeline and the first flow channel are connected, the cooling liquid pipeline and the first flow channel form a cooling liquid circulation loop.
[0012] Optionally, the first electromagnetic valve comprises a four-way valve, A and B ports of the four-way valve being respectively connected to two ends of the cooling liquid pipeline, C and D ports of the four-way valve being respectively connected to two ends of the first flow channel, and the four-way valve being capable of selectively connecting two of A, B, C and D ports to each other.
[0013] Optionally, the vehicle further comprises a main pipeline, a first branch and a second branch, the first branch and the second branch being arranged in parallel, two ends of the main pipeline being respectively connected to two parallel nodes of the first branch and the second branch, a water pump and a motor assembly being arranged on the main pipeline, the first flow channel forming a part of the first branch, and a three-way valve being arranged at a parallel node of the first branch and the second branch, three ports of the three-way valve being respectively connected to the main pipeline, the first branch and the second branch.
[0014] By the above technical solution, the first flow channel and the heat dissipation part are arranged on the tray body in heat conduction connection with each other, when the cooling liquid flows through the first flow channel, the heat dissipation part exchanges heat with the external airflow to dissipate heat for the battery cell module, the battery pack tray is designed to integrate protection and cooling, and a large power heat dissipation channel is provided for the vehicle without occupying a large amount of space, thereby reducing consumption of the vehicle power and improving the performance of the battery pack and the vehicle.
[0015] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF DRAWINGS
[0016] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, and are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation of the present disclosure. In the drawings:
[0017] Figure 1is a partial structural sectional view of a battery pack provided by an exemplary embodiment of the present disclosure;
[0018] Figure 2 is a partial structural exploded view of a battery pack provided by an exemplary embodiment of the present disclosure;
[0019] Figure 3 is a schematic diagram of a first heat exchange mode provided by an exemplary embodiment of the present disclosure;
[0020] Figure 4 is a schematic diagram of a second heat exchange mode provided by an exemplary embodiment of the present disclosure;
[0021] Figure 5 is a schematic diagram of a third heat exchange mode provided by an exemplary embodiment of the present disclosure.
[0022] BRIEF DESCRIPTION OF DRAWINGS
[0023] 1 - battery cell module; 2 - tray body; 21 - cooling plate; 211 - second flow channel; 22 - heat dissipation plate; 3 - first flow channel; 4 - heat dissipation part; 5 - thermally conductive adhesive layer; 61 - first interface; 62 - second interface; 7 - four-way valve. DETAILED DESCRIPTION
[0024] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.
[0025] In the present disclosure, the orientation words such as "inner" and "outer" are used in relation to the outline of the respective components, unless otherwise stated. The terms such as "first", "second", etc. used in the present disclosure are used to distinguish one element from another element, and do not have sequentiality and importance. In addition, the following description, when referring to the drawings, the same reference numerals in different drawings represent the same or similar elements.
[0026] REFERENCE Figure 1 and Figure 2The battery pack tray can include a tray body 2 which can be used to support the bottom of the battery cell module 1 to provide more stable physical support and protection for the battery cell module 1 when it is installed in the vehicle interior, for example, during vehicle driving, the tray body 2 can effectively withstand external impact or vehicle jolt, thereby ensuring the stability and safety of the installation position of the battery cell module 1. It should be noted that the bottom in the present disclosure refers to the bottom in the direction of the height of the vehicle body. The tray body 2 can be provided with a first flow channel 3 for circulating cooling liquid, when the cooling liquid is static inside the first flow channel 3, it forms a heat insulation layer to play a heat preservation role on the battery cell module 1, or the cooling liquid can flow out after flowing through the first flow channel 3 in the flow process to carry the heat of the first flow channel 3, thereby realizing the heat exchange between the external heat and the tray body 2, and then exchanging heat with the battery cell module 1 through the tray body 2. The side of the tray body 2 away from the battery cell module 1 can be provided with a heat dissipation part 4 for heat exchange with the outside, and the heat dissipation part 4 can be in heat conduction connection with the first flow channel 3, thereby helping to dissipate the heat of the battery pack and assisting in maintaining the battery module in a suitable working temperature range, avoiding performance degradation or even safety hazards caused by local overheating.
[0027] Through the above technical solution, the first flow channel 3 and the heat dissipation part 4 in heat conduction connection with each other are arranged on the tray body 2, when the cooling liquid flows through the first flow channel 3, the heat dissipation part 4 exchanges heat with the external airflow to dissipate heat from the battery cell module 1, and such design makes full use of the bottom space of the battery cell module 1, and designs the battery pack tray as an integrated protection and cooling device, which provides a larger heat dissipation channel for the vehicle without occupying a large amount of space, reduces the consumption of vehicle power, and improves the performance of the battery pack and the vehicle.
[0028] Referring to Figure 1 and Figure 2 , the heat dissipation part 4 can include one of a heat dissipation fin and a heat dissipation metal layer, or the heat dissipation part 4 can include both the heat dissipation metal layer and the heat dissipation fin. Specifically, the heat dissipation fin can be protrudingly arranged on the side of the tray body 2 away from the battery cell module 1, so that the heat dissipation fin can be exposed to the high-speed flowing airflow during vehicle driving, thereby rapidly removing the heat transferred from the battery cell module 1 to the tray body 2 to play a heat dissipation role. The heat dissipation metal layer can be arranged on the surface of the side of the tray body 2 away from the battery cell module 1, thereby ensuring the heat exchange effect between the heat dissipation part 4 and the battery cell module 1.
[0029] In the embodiments provided in the present disclosure, the extension direction of the heat dissipation fins can be parallel to the length direction of the battery pack tray, the battery pack tray can be rectangular, and the length direction of the battery pack tray can be parallel to the front-rear direction of the vehicle. It can be understood that the end face of the battery pack tray for supporting the battery pack core body can be configured as a rectangle, and the rectangle structure extends along the front-rear direction of the vehicle, i.e., the driving direction of the vehicle. Correspondingly, the heat dissipation fins can also extend along the driving direction of the vehicle, so that the wind speed flowing on the surface of the heat dissipation fins can be increased with the increase of the vehicle speed, greatly improving the heat dissipation efficiency and the upper limit of the cooling capacity of the whole vehicle. At the same time, since the heat dissipation fins are integrated on the tray body 2, the occupation of the additional space in the vehicle is reduced, and the purpose of protecting and cooling the battery cell module 1 can be achieved, thereby improving the space utilization rate of the vehicle interior. The entire surface of the tray body 2 can be uniformly distributed with a plurality of heat dissipation fins arranged at intervals along the left-right direction of the vehicle, thereby effectively increasing the heat dissipation area of the heat dissipation fins.
[0030] With reference to Figure 1 and Figure 2 , the tray body 2 can include a cooling plate 21 and a heat dissipation plate 22 arranged in sequence. The cooling plate 21 can be arranged on the side of the tray body 2 close to the battery cell module 1, and the second flow channel 211 can be arranged in the cooling plate 21. The second flow channel 211 can be used for circulating refrigerant to be in thermal contact with the battery cell module 1. The heat dissipation plate 22 can be in thermal contact with the cooling plate 21 through the heat conduction adhesive layer 5, i.e., the heat dissipation plate 22, the heat conduction adhesive layer 5, the cooling plate 21 and the battery cell module 1 are in thermal contact in sequence. The heat dissipation plate 22 can be provided with the first flow channel 3 and the heat dissipation part 4, so as to integrate the first flow channel 3 and the heat dissipation part 4 into an integrated structure, thereby ensuring the heat exchange effect. In the embodiments provided in the present disclosure, the heat conduction adhesive layer 5 can be made of heat conduction structural adhesive. The heat conduction structural adhesive can be filled in the gap between the heat dissipation plate 22 and the cooling plate 21. Since the heat conduction structural adhesive has a certain fluidity, when the side surfaces of the heat dissipation plate 22 and the cooling plate 21 close to each other are non-flat surfaces, the heat conduction structural adhesive can be filled in the small gap formed between the heat dissipation plate 22 and the cooling plate 21, so that the battery cell module 1 and the tray body 2 can be in better contact, thereby improving the connection strength between the heat dissipation plate 22 and the cooling plate 21, and effectively ensuring the heat conduction performance between the heat dissipation plate 22 and the cooling plate 21.
[0031] With reference to Figure 1 and Figure 2, the tray body 2 can include a heat dissipation plate 22, the heat dissipation plate 22 can be arranged on the side of the tray body 2 away from the battery cell module 1, the heat dissipation plate 22 can be provided with the first flow channel 3 and the heat dissipation part 4, and the tray body 2 has the beneficial effects of the tray body 2 mentioned above, which will not be repeated here. The tray body 2 can further include a first interface 61 and a second interface 62, the first flow channel 3 can be communicated between the first interface 61 and the second interface 62, and the first interface 61 and the second interface 62 can be used for accessing the cooling liquid pipeline respectively, so that the cooling liquid pipeline can form a cooling loop with the first flow channel 3. When the cooling liquid pipeline is in communication with the first flow channel 3, the cooling liquid flowing through the cooling liquid pipeline can pass through one of the first interface 61 and the second interface 62 to the first flow channel 3, and then flow back to the cooling liquid pipeline after heat exchange with the battery cell module 1 through the first flow channel 3, so as to prepare for the next heat exchange. In the embodiments provided in the present disclosure, the first flow channel 3 can be configured as a coil pipe to store more heat exchange medium in a limited space, and the first interface 61 and the second interface 62 can be arranged at intervals on both sides of the tray body 2, for example, on both sides in the width direction, to ensure that the first flow channel 3 has a longer flow path.
[0032] According to a second aspect of the present disclosure, a battery pack is also provided, which can include the battery pack tray and the battery cell module 1 provided in the present disclosure. The battery pack has all the beneficial effects of the battery pack tray provided in the present disclosure, which will not be repeated here.
[0033] According to a third aspect of the present disclosure, a vehicle is also provided, which can further include a cooling liquid pipeline and a first electromagnetic valve, the first electromagnetic valve can be connected between the cooling liquid pipeline and the first flow channel 3, and the first electromagnetic valve can selectively connect or disconnect the cooling liquid pipeline and the first flow channel 3 to adjust the on-off between the first flow channel 3 and the cooling liquid pipeline according to the heat exchange demand. Referring to Figures 3-5 , a water pump and a motor assembly can be arranged on the cooling liquid pipeline, and when the cooling liquid pipeline is in communication with the first flow channel 3, the cooling liquid pipeline and the first flow channel 3 can form a cooling liquid circulation loop. The cooling liquid in the cooling liquid pipeline can exchange heat with the motor assembly when flowing through the motor assembly, and the water pump can be used to pump the heat exchange medium, thereby ensuring the heat exchange effect of the cooling liquid. By transferring the heat of the motor assembly to the battery cell module 1, the temperature of the battery cell module 1 can be changed, so that the battery cell module 1 can be kept in a normal working state, on the other hand, the heat of the battery cell module 1 is transferred to the cooling liquid pipeline, which can assist the heat exchange of the equipment on the cooling liquid pipeline, and ensure the performance and endurance of the vehicle.
[0034] Further, the first electromagnetic valve can include a four-way valve 7, the A port and the B port of the four-way valve 7 can be communicated with two ends of the cooling liquid pipeline respectively, the C port and the D port of the four-way valve 7 can be communicated with two ends of the first flow channel 3 respectively, and the four-way valve 7 can selectively set two of the A port, the B port, the C port and the D port to be communicated with each other. By changing the communication mode of the A port, the B port, the C port and the D port of the four-way valve 7, the first flow channel 3 and the cooling liquid pipeline have different communication modes, so as to change the flow direction of the cooling liquid, greatly improving the convenience of operation and effectively reducing the complexity and difficulty when switching between different heat exchange modes.
[0035] Specifically, referring to Figure 3 When the A port and the C port of the four-way valve 7 are communicated, and the B port and the D port of the four-way valve 7 are communicated, it is the first heat exchange mode. At this time, the cooling liquid pipeline can be communicated with the first flow channel 3 to form a circulation loop, so as to meet the heat exchange demand of the battery cell module 1. The cooling liquid flows through the motor assembly and exchanges heat, then enters the first flow channel 3 to exchange heat with the battery cell module 1 through the tray body 2, and then flows out of the tray body 2 to the cooling liquid pipeline, so as to realize the heat exchange between the battery cell module 1 and the motor assembly.
[0036] When the motor assembly has a large heat load and the battery cell module 1 is in a cooling state in the first heat exchange mode, the heat exchange between the first flow channel 3 and the cooling liquid pipeline can effectively utilize the remaining cold of the battery pack to cool the motor assembly to assist the motor assembly. When the motor assembly has a large heat load and the battery cell module 1 has a heating demand, the remaining heat of the motor assembly can be effectively utilized to heat the battery cell module 1. When the motor assembly has a small heat load and the battery cell module 1 has a cooling demand, the battery pack can be cooled by the heat dissipation fins. On the basis of the first heat exchange mode, when the battery pack has a large temperature difference and uneven heating in the heat exchange process between the first flow channel 3 and the cooling liquid pipeline, the A port and the D port of the four-way valve 7 can be communicated, and the B port and the C port of the four-way valve 7 can be communicated, so as to switch to the second heat exchange mode, as shown in Figure 4 Thus, the inlet and outlet directions of the cooling liquid between the first flow channel 3 and the cooling liquid pipeline can be changed, which can effectively reduce the temperature difference of the battery pack, improve the uniformity of the heating of the battery pack, and make the performance of the battery pack better.
[0037] As Figure 5As shown, in the third heat exchange mode, the A port and the B port of the four-way valve 7 are communicated, and the D port and the C port of the four-way valve 7 are communicated, so that the first flow channel 3 is communicated with the coolant pipe itself and the two are not communicated with each other. When the battery pack has a heat preservation requirement, the static heat exchange medium in the tray body 2 can be effectively used as a heat preservation layer to reduce the heat dissipation of the tray body 2 to the air. When the motor assembly has a general or small heat load, and the battery pack is not in a cooling or heating state, the influence of the vehicle thermal management component heat load on the battery pack can be effectively blocked.
[0038] With reference to Figures 1-5 , the vehicle can further include a main pipeline, a first branch, and a second branch, the first branch and the second branch can be arranged in parallel, two ends of the main pipeline can be connected to two parallel nodes of the first branch and the second branch respectively, and a water pump and a motor assembly can be arranged on the main pipeline. The first flow channel 3 can be formed as part of the first branch, so that when the first branch and the main pipeline are communicated, the heat exchange between the first flow channel and the main pipeline can be realized. A three-way valve (not shown in the figure) is arranged at a parallel node of the first branch and the second branch, and three ports of the three-way valve can be connected to the main pipeline, the first branch and the second branch respectively. In the embodiments provided in the present disclosure, the A port of the three-way valve can be communicated with the main pipeline, the B port of the three-way valve can be communicated with the first branch, and the C port of the three-way valve can be communicated with the second branch.
[0039] Specifically, the A port of the three-way valve can be communicated with the B port and the C port respectively, and the main pipeline can be provided with a heat dissipation module, at this time, the main pipeline can be communicated with the first branch and the second branch respectively, the main pipeline exchanges heat with the second branch, and the main pipeline exchanges heat with the first branch, so as to realize heat exchange between the heat dissipation module on the main pipeline and the first flow channel 3 of the first branch. Since the first flow channel 3 can be used for heat exchange with the battery pack, and the water pump and the motor assembly work in the main pipeline, the cooling liquid enters the first flow channel 3 of the first branch from the main pipeline, so as to effectively take away the heat generated by the battery pack, thereby maintaining the temperature of the battery pack within a suitable range, preventing the battery pack from overheating when working under high load, and helping to improve the performance and service life of the battery pack. In the present disclosure, the second branch can be used as part of other heat exchange modules of the vehicle, for example, as part of the refrigerant pipeline of the vehicle air conditioning system, so that the main pipeline can exchange heat with the second branch and the first branch at the same time, so that the refrigerant in the main pipeline can go to different heat exchange areas of the vehicle at the same time, realizing heat exchange of different positions or different functional modules of the vehicle. The heat dissipation module can also be arranged on the second branch, and the cooling liquid can flow to the main pipeline after flowing through the second branch and exchanging heat with the heat dissipation module, and then exchange heat with the main pipeline before flowing to the first branch and exchanging heat with the battery cell module 1. When the battery pack has no heat exchange requirement, the B port and the A port of the three-way valve can be cut off, at this time, the main pipeline and the first branch are not communicated with each other, so that the battery pack no longer exchanges heat with the main pipeline, and the B port and the C port of the three-way valve can be selectively communicated according to the heat exchange requirement, so as to meet different heat exchange requirements.
[0040] Reference Figure 1 and Figures 3-5 The vehicle can further include a vehicle refrigeration assembly, which can include a compressor, a condenser and an expansion valve arranged in sequence along the refrigerant flow direction. The compressor, the condenser and the expansion valve can be arranged on the cooling flow path partially accommodated in the inner cooling plate of the battery pack. After exchanging heat with the compressor and the condenser respectively, the refrigerant can be throttled and depressurized by the expansion valve for flow regulation, and then pass into the inner cooling plate of the battery pack to exchange heat with the battery pack. Not only can the battery cell module 1 be kept in a normal working state, but also the heat of the battery cell module 1 can be transferred to the vehicle refrigeration assembly to assist the vehicle refrigeration assembly, thereby ensuring the performance and endurance of the vehicle.
[0041] The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
[0042] It should be further noted that various specific technical features described in the above specific embodiments can be combined in any suitable manner, and the disclosure will not be repeated here for various possible combinations.
[0043] In addition, various different embodiments of the disclosure can also be combined with each other as long as they do not contradict the idea of the disclosure, and they should also be considered as disclosed by the disclosure.
Claims
1. A battery pack tray, characterized by, The tray body includes a first flow channel for circulating cooling liquid, and a heat dissipation portion on the side of the tray body away from the battery cell module for heat exchange with external air.
2. The battery pack tray of claim 1, wherein, The heat dissipation portion includes heat dissipation fins protruding from the side of the tray body away from the battery cell module, and / or a heat dissipation metal layer covering the surface of the side of the tray body away from the battery cell module.
3. The battery pack tray of claim 2, wherein, The heat dissipation fins extend in a direction parallel to the length direction of the battery pack tray, which is rectangular and parallel to the front-rear direction of the vehicle.
4. The battery pack tray of claim 1, wherein, The tray body includes a cooling plate and a heat dissipation plate stacked in sequence, the cooling plate is arranged on the side of the tray body close to the battery cell module, the cooling plate is provided with a second flow channel for circulating refrigerant, and the heat dissipation plate is in thermal contact with the cooling plate through a thermal conductive adhesive layer, and the heat dissipation plate is provided with the first flow channel and the heat dissipation portion.
5. The battery pack tray of claim 1, wherein, The tray body includes a heat dissipation plate, a first interface and a second interface, the heat dissipation plate is arranged on the side of the tray body away from the battery cell module, the heat dissipation plate is provided with the first flow channel and the heat dissipation portion, the first flow channel is connected between the first interface and the second interface, and the first interface and the second interface are used to connect the cooling liquid pipeline, so that the cooling liquid pipeline and the first flow channel form a cooling loop.
6. A battery pack, characterized by, The battery pack includes the battery cell module and the battery pack tray according to any one of claims 1-4.
7. A vehicle characterized by comprising: The vehicle includes the battery pack according to claim 6.
8. The vehicle of claim 7, wherein, The vehicle further includes a cooling liquid pipeline and a first electromagnetic valve connected between the cooling liquid pipeline and the first flow channel, the first electromagnetic valve can selectively connect or disconnect the cooling liquid pipeline and the first flow channel, and the cooling liquid pipeline is provided with a water pump and a motor assembly, and when the cooling liquid pipeline and the first flow channel are connected, they form a cooling liquid circulation loop.
9. The vehicle of claim 8, wherein, The first electromagnetic valve includes a four-way valve, the A port and the B port of the four-way valve are respectively connected to the two ends of the cooling liquid pipeline, the C port and the D port of the four-way valve are respectively connected to the two ends of the first flow channel, and the four-way valve can selectively connect two of the A port, the B port, the C port and the D port.
10. The vehicle of claim 7, wherein, The vehicle further includes a main pipeline, a first branch and a second branch, the first branch and the second branch are connected in parallel, the two ends of the main pipeline are respectively connected to two parallel nodes of the first branch and the second branch, the main pipeline is provided with a water pump and a motor assembly, the first flow channel forms part of the first branch, and a three-way valve is arranged at one parallel node of the first branch and the second branch, and the three ports of the three-way valve are respectively connected to the main pipeline, the first branch and the second branch.