Battery cooler, automotive thermal management system and automobile

Abstract

The utility model belongs to the technical field of automobiles, and discloses a battery cooler, an automotive thermal management system and an automobile, the battery cooler comprises a cooler body, a connecting piece and an expansion valve, the cooler body comprises a core body, a refrigerant flow channel and a cooling liquid flow channel, and the refrigerant flow channel comprises a refrigerant inlet and a refrigerant outlet; the connecting piece comprises two steering flow channels, the extending direction of the input end of each steering flow channel and the extending direction of the output end of each steering flow channel form an angle, and the ends, on the same side, of the two steering flow channels communicate with the refrigerant inlet and the refrigerant outlet correspondingly. A first pipeline and a second pipeline are arranged in the expansion valve and communicate with the two steering flow channels correspondingly, the first pipeline communicates with the refrigerant inlet through the steering flow channel, and the second pipeline communicates with the refrigerant outlet through the steering flow channel. Thus, by arranging the connecting piece, the flowing direction of the refrigerant can be changed, the expansion valve and the cooler body are connected more compactly, and the occupied space is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, and in particular to a battery cooler, a vehicle thermal management system and an automobile. Background Art

[0002] Cars are a common means of transportation, mainly used for personal or cargo transportation. With the development of new energy technologies, new energy vehicles and hybrid vehicles have gradually become the focus of the automotive industry.

[0003] In order to regulate the temperature inside the car more efficiently, new energy vehicles and hybrid vehicles will use heat pump air conditioners to replace conventional steam compression air conditioners. Heat pumps can not only provide cooling functions, but also provide heating for the vehicle in winter, which has significant advantages in energy efficiency.

[0004] However, since new energy vehicles and hybrid vehicles are equipped with batteries inside, in order to reduce the temperature around the batteries, a battery cooler is usually installed. Adding a heat pump system to the air-conditioning system requires additional pipes, which leads to insufficient space for pipe layout inside the vehicle body and affects the assembly of the battery cooler. Utility Model Content

[0005] The purpose of the utility model is to provide a battery cooler, a vehicle thermal management system and a vehicle, so as to solve the problem that the space for arranging pipelines inside the vehicle body is small, which is not conducive to assembling the battery cooler.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] In the first aspect, a battery cooler comprises: a cooler body, the cooler body comprising a core, a refrigerant flow channel and a coolant flow channel, the refrigerant flow channel comprising a refrigerant inlet and a refrigerant outlet, the refrigerant inlet and the refrigerant outlet being arranged on one side of the core; a connecting piece, the connecting piece comprising two turning flow channels, the extension direction of the input end of the turning flow channel is arranged at an angle to the extension direction of the output end, and the ends on the same side of the two turning flow channels are respectively connected to the refrigerant inlet and the refrigerant outlet; an expansion valve, a first pipe and a second pipe are arranged inside the expansion valve, the first pipe and the second pipe are respectively connected to the two turning flow channels, the first pipe is connected to the refrigerant inlet through the turning flow channel, and the second pipe is connected to the refrigerant outlet through the turning flow channel.

[0008] Preferably, an angle formed between an extension direction of the output end of the diverting flow channel and an extension direction of the input end of the diverting flow channel is 90°.

[0009] Preferably, the output end and the input end of the diverting flow channel are respectively arranged on adjacent side walls of the connecting member.

[0010] Preferably, the battery cooler further comprises a flow channel cover plate sealedly connected to the core body, and the connecting member and the core body are respectively fixedly arranged on both sides of the flow channel cover plate.

[0011] Preferably, the connecting piece is connected with a connecting bolt, and the expansion valve and the connecting piece are detachably connected via the connecting bolt.

[0012] Preferably, the connecting bolt is connected to a side of the connecting member facing the expansion valve and is located between the two diverting flow passages.

[0013] Preferably, the connecting member is connected to a sealing ring, and two sides of the sealing ring are respectively in contact with the connecting member and the expansion valve.

[0014] Preferably, two sealing rings are provided, and the two sealing rings are arranged on the connecting piece at positions corresponding to the two steering flow channels.

[0015] In a second aspect, a vehicle thermal management system includes a refrigerant circuit, a coolant circuit, and the battery cooler as described above, wherein the battery cooler is connected to both the refrigerant circuit and the coolant circuit.

[0016] In a third aspect, a car includes the vehicle thermal management system as described above.

[0017] Beneficial effects of the utility model:

[0018] A battery cooler includes a cooler body, a connector and an expansion valve. The cooler body includes a core, a refrigerant flow channel and a coolant flow channel. The refrigerant flow channel includes a refrigerant inlet and a refrigerant outlet. The refrigerant inlet and the refrigerant outlet are arranged on one side of the core; the connector includes two turning flow channels, the extension direction of the turning flow channel input end is arranged at an angle to the extension direction of the output end, and the ends on the same side of the two turning flow channels are respectively connected to the refrigerant inlet and the refrigerant outlet; a first pipe and a second pipe are provided inside the expansion valve, and the first pipe and the second pipe are respectively connected to the two turning flow channels, the first pipe is connected to the refrigerant inlet through the turning flow channel, and the second pipe is connected to the refrigerant outlet through the turning flow channel.

[0019] In this way, the expansion valve is connected to the cooler body through a connector, which can control the flow of the refrigerant to maintain the battery at the optimal operating temperature and improve the efficiency and reliability of the entire system; the input end extension direction and the output end extension direction of the steering flow channel are set at an angle, which can change the flow direction of the refrigerant, so that the expansion valve can be set on one side of the cooler body, saving the pipe connection between the expansion valve and the cooler body and making the connection between the expansion valve and the cooler body more compact, thereby making the structure of the battery cooler more compact, facilitating the assembly of the battery cooler inside the vehicle body with a smaller internal piping layout space, and making the refrigerant and coolant circulate stably in the battery cooler, and not easily interfering with the air-conditioning system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of a first partial structure of a battery cooler in one embodiment of the present utility model;

[0021] Figure 2 This is an exploded schematic diagram of a battery cooler in one embodiment of the present invention;

[0022] Figure 3 This is a partially exploded schematic diagram of a battery cooler in one embodiment of the present invention;

[0023] Figure 4 This is a second partial structural diagram of a battery cooler in one embodiment of the present utility model.

[0024] In the picture:

[0025] 1. Cooler body; 11. Core; 12. Refrigerant inlet; 13. Refrigerant outlet; 14. Coolant pipe; 2. Connector; 21. Steering channel; 22. Connecting bolt; 23. Sealing ring; 3. Expansion valve; 31. First pipeline; 32. Second pipeline; 4. Flow channel cover. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0027] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0028] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0029] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0030] First, see Figure 1 The utility model provides a battery cooler, including a cooler body 1, a connecting piece 2 and an expansion valve 3.

[0031] See Figure 1 and Figure 2 The cooler body 1 includes a core 11, a refrigerant flow channel (not shown in the figure) and a coolant flow channel (not shown in the figure). The refrigerant flow channel includes a refrigerant inlet 12 and a refrigerant outlet 13. The refrigerant inlet 12 and the refrigerant outlet 13 are arranged on one side of the core 11; the connecting piece 2 includes two turning flow channels 21, and the extension direction of the input end of the turning flow channel 21 is arranged at an angle to the extension direction of the output end. The ends on the same side of the two turning flow channels 21 are respectively connected to the refrigerant inlet 12 and the refrigerant outlet 13; a first pipe 31 and a second pipe 32 are provided inside the expansion valve 3, and the first pipe 31 and the second pipe 32 are respectively connected to the two turning flow channels 21, the first pipe 31 is connected to the refrigerant inlet 12 through the turning flow channel 21, and the second pipe 32 is connected to the refrigerant outlet 13 through the turning flow channel 21.

[0032] In this embodiment, the refrigerant flow channel and the cooling liquid flow channel are respectively arranged inside the core 11, the refrigerant inlet 12 and the refrigerant outlet 13 are arranged on the same side of the core 11, and are arranged at intervals along the height direction of the core 11, and the refrigerant outlet 13 is arranged below the refrigerant inlet 12; the two turning flow channels 21 have the same extension direction, and the ends of the two turning flow channels 21 facing the core 11 are fixedly connected to the cooler body 1; the first pipe 31 and the second pipe 32 of the expansion valve 3 have the same length direction, and the first pipe 31 and the second pipe 32 are arranged at intervals along the height direction of the expansion valve 3, and the first pipe 31 is located above the second pipe 32; the flow direction of the refrigerant at the refrigerant inlet 12 is set at an angle to the flow direction in the first pipe 31.

[0033] It should be noted that, see Figure 2 and Figure 4 The refrigerant flows into the turning channel 21 corresponding to the first pipe 31 through the first pipe 31, and enters the core 11 through the refrigerant inlet 12. After circulation, the refrigerant enters the turning channel 21 corresponding to the second pipe 32 from the refrigerant outlet 13, and is transported to the outside through the second pipe 32.

[0034] In this way, the expansion valve 3 is connected to the cooler body 1 through the connector 2, which can control the flow of the refrigerant to maintain the battery at the optimal operating temperature and improve the efficiency and reliability of the entire system. By setting the connector 2, the direction of the refrigerant flowing between the expansion valve 3 and the cooler body 1 can be changed, making the connection between the expansion valve 3 and the cooler body 1 more compact, thereby enabling the battery cooler to be stably assembled even when the space for arranging the internal pipelines of the vehicle body is small, and it is not easy to interfere with the air-conditioning system.

[0035] It is understandable that the positions of the refrigerant inlet 12 and the refrigerant outlet 13 can be adjusted according to actual design requirements, as long as the refrigerant flow channel can be connected to the expansion valve 3 through the connector 2. No further details will be given here.

[0036] Furthermore, the turning channel 21 is arranged inside the connecting member 2, and the side of the connecting member 2 facing away from the expansion valve 3 is chamfered, that is, the longitudinal section of the connecting member 2 is D-shaped to avoid interference with other structures of the cooler body 1 and save the space occupied by the connecting member 2 inside the vehicle body.

[0037] It is understandable that the connecting member 2 can also be a cylindrical structure, a rectangular structure, etc. The specific shape of the connecting member 2 can be flexibly adjusted to connect the cooler body 1 and the expansion valve 3 and change the flow direction of the refrigerant. No more examples will be given here.

[0038] See Figure 3 and Figure 4 In some embodiments, the angle formed between the output end extension direction of the redirecting channel 21 and the input end extension direction of the redirecting channel 21 is 90°. That is, the refrigerant flow direction at the refrigerant inlet 12 is perpendicular to the refrigerant flow direction within the first pipe 31, and the refrigerant flow direction at the refrigerant outlet 13 is perpendicular to the refrigerant flow direction within the second pipe 32. In this embodiment, the expansion valve 3 is disposed on one side of the cooler body 1, and the connector 2 is disposed between the cooler body 1 and the expansion valve 3.

[0039] In this way, after the refrigerant changes its flow direction in the connecting part 2, the expansion valve 3 can be easily installed on the side of the cooler body 1 to avoid occupying the space directly in front of and behind the cooler body 1, making the overall structure of the battery cooler more compact. When the space for arranging the pipelines inside the vehicle body is small, it is convenient to assemble the battery cooler and allow the refrigerant to circulate stably in the expansion valve 3 and the cooler body 1.

[0040] It is understandable that the angle formed by the extension direction of the output end of the steering channel 21 and the extension direction of the input end of the steering channel 21 can also be an obtuse angle or an acute angle, and is not limited to 90°. It can be designed according to actual needs and will not be elaborated here.

[0041] Furthermore, the steering channel 21 can be provided with multiple branches at different angles, so that the expansion valve 3 can select a suitable branch for connection according to actual design requirements and make rational use of the interior space of the vehicle body. Sealing covers and other structures can be provided at other branches to prevent refrigerant leakage.

[0042] See Figure 3 In some embodiments, the output end and the input end of the diverting flow channel 21 are respectively arranged on the adjacent side walls of the connecting member 2, that is, the side wall of the connecting member 2 facing the cooler body 1 and the side wall facing the expansion valve 3.

[0043] Among them, the input end of the turning flow channel 21 connected to the first pipe 31 is set on the side wall of the connecting piece 2 facing the expansion valve 3, and the output end is set on the side wall of the connecting piece 2 facing the cooler body 1; the input end of the turning flow channel 21 connected to the second pipe 32 is set on the side wall of the connecting piece 2 facing the cooler body 1, and the output end is set on the side wall of the connecting piece 2 facing the expansion valve 3, that is, the refrigerant flow directions in the two turning flow channels 21 are opposite.

[0044] In this way, the connector 2 changes the flow direction of the refrigerant, enabling the cooler body 1 and the expansion valve 3 to be respectively arranged on two adjacent side walls of the connector 2, and allowing the expansion valve 3 to stably control the refrigerant flow, and making the overall structure of the battery cooler more compact, reducing the occupied space, saving the pipes required for the connection, so that the battery cooler can be normally assembled when the space for the internal pipeline layout of the vehicle body is small, and the coolant and refrigerant can circulate stably in the battery cooler.

[0045] It can be understood that the setting positions of the output end and the input end of the steering channel 21 are not limited to the adjacent side walls of the connecting piece 2, and can also be adjusted according to the actual space design needs, so as to achieve a compact connection between the expansion valve 3 and the cooler body 1. No more examples will be listed here.

[0046] Furthermore, protruding connectors 2 are provided at both ends of the diverting flow channel 21 so that the ends of the two diverting flow channels 21 facing the expansion valve 3 extend into the first pipe 31 and the second pipe 32 respectively, and the ends of the two diverting flow channels 21 facing the cooler body 1 extend into the refrigerant flow channel and the coolant flow channel respectively, thereby fixing the relative positions of the connector 2 and the cooler body 1 and the expansion valve 3.

[0047] It can be understood that in order to enhance the sealing of the end of the steering channel 21, a sealing ring 23 can also be provided at the end of the steering channel 21, so that the sealing ring 23 abuts against the expansion valve 3 or the cooler body 1; the two ends of the steering channel 21 can also be flush with the side wall of the connecting part 2, and the specific shape and structure of the steering channel 21 can be flexibly adjusted according to actual design needs, and no more examples are listed here.

[0048] Further, see Figure 1 In some embodiments, the coolant flow channel is connected to a coolant pipe 14, the length direction of the coolant pipe 14 is parallel to the length direction of the cooler body 1, the expansion valve 3 is arranged on the side of the connector 2 away from the coolant pipe 14, and the coolant pipe 14 and the connector 2 are located on the same side of the cooler body 1.

[0049] In this way, the coolant pipe 14 and the connector 2 are arranged on the same side of the cooler body 1, which can make the overall structure of the battery cooler more compact, reduce the space occupied by the battery cooler, save pipeline layout, and enable the battery cooler to be smoothly assembled when the pipeline layout space inside the vehicle body is small.

[0050] It can be understood that two coolant pipes 14 can be provided, and the two coolant pipes 14 are respectively provided at both ends of the core 11 and connected to the core 11, one of the coolant pipes 14 is used to input coolant into the core 11, and the other coolant pipe 14 is used to output coolant to the outside. The connector 2 and the expansion valve 3 can be located on the same side as the coolant pipe 14 that inputs coolant into the core 11, or on the same side as the coolant pipe 14 that outputs coolant to the outside, or on the side wall between the side walls of the cooler body 1 where the two coolant pipes 14 are provided. No more examples are given here.

[0051] See Figure 2In some embodiments, the battery cooler further includes a flow channel cover plate 4 that is sealed with the core 11, with the connector 2 and the core 11 fixedly disposed on either side of the flow channel cover plate 4. The length of the flow channel cover plate 4 is parallel to the height of the cooler body 1, that is, the flow channel cover plate 4 is disposed vertically. The flow channel cover plate 4 is sealed with the core 11 and the connector 2 by welding, and the flow channel cover plate 4 protrudes from the cooler body 1. The refrigerant inlet 12 is disposed on the protruding portion of the flow channel cover plate 4, so that the refrigerant enters the core 11 through the refrigerant inlet 12.

[0052] In this way, the flow channel cover plate 4 is sealed and connected to the core 11 and the connecting piece 2 by welding, which can improve the connection strength between the connecting piece 2 and the cooler body 1, and improve the sealing strength of the connection between the connecting piece 2 and the flow channel cover plate 4, thereby preventing the refrigerant from leaking when flowing between the connecting piece 2 and the cooler body 1 and affecting the normal use of the battery cooler.

[0053] It is understandable that the refrigerant outlet 13 can also be set on the flow channel cover plate 4, and the positions of the refrigerant inlet 12 and the refrigerant outlet 13 relative to the flow channel cover plate 4 can be flexibly adjusted, so that the connecting part 2 can be sealed and connected to the cooler body 1 through the flow channel cover plate 4, which will not be elaborated here.

[0054] See Figure 2 In some embodiments, the connector 2 is connected to a connecting bolt 22, and the expansion valve 3 is detachably connected to the connector 2 via the connecting bolt 22. In this embodiment, two connecting bolts 22 are provided, both of which pass through the expansion valve 3 and are threadedly connected to the connector 2. The two connecting bolts 22 are arranged on the connector 2 at intervals in the horizontal direction.

[0055] In this way, the expansion valve 3 and the connector 2 are detachably connected, which makes it easy to load, unload, repair and replace the expansion valve 3. When assembling the battery cooler, the cooler body 1 and the connector 2 can be assembled inside the vehicle body first, and then the expansion valve 3 and the connector 2 can be connected, thereby improving the assembly flexibility of the battery cooler. In addition, since the expansion valve 3 is arranged on one side of the cooler body 1, the overall structure of the battery cooler is relatively compact, which makes it easy to assemble the battery cooler inside the vehicle body where the internal piping layout space is small.

[0056] It can be understood that the expansion valve 3 and the connecting member 2 can also be detachably connected by means of a snap or a slider groove, and are not limited to the connection by the connecting bolt 22. The connecting bolt 22 is used in this embodiment to make the connection between the connecting member 2 and the expansion valve 3 tighter, thereby improving the sealing performance and stability of the connection between the expansion valve 3 and the connecting member 2, and preventing the expansion valve 3 from loosening or even falling off and affecting the circulation of the refrigerant.

[0057] See Figure 2In some embodiments, the connecting bolt 22 is connected to the side of the connector 2 facing the expansion valve 3 and is located between the two diverting channels 21. In this embodiment, both connecting bolts 22 are disposed between the two diverting channels 21. When the connector 2 and the expansion valve 3 are connected via the connecting bolts 22, the length directions of the two connecting bolts 22 are parallel to the length direction of the first pipe 31.

[0058] In this way, the two connecting bolts 22 are arranged at intervals in the horizontal direction, which can improve the connection strength between the connecting part 2 and the expansion valve 3 in the horizontal direction; the connecting bolts 22 are located between the two steering channels 21, which can effectively utilize the internal space of the connecting part 2 and avoid interference with the steering channel 21, thereby saving the space occupied by the connecting part 2 and making the connection between the connecting part 2 and the expansion valve 3 more compact, thereby making the overall structure of the battery cooler more compact, and facilitating the assembly of the battery cooler inside the vehicle body with a smaller space for internal piping layout.

[0059] It is understandable that the number and location of the connecting bolts 22 can be flexibly adjusted according to actual assembly requirements, as long as the expansion valve 3 and the cooler body 1 can be detachably connected, which will not be elaborated here.

[0060] See Figure 3 In some embodiments, the connector 2 is connected to a sealing ring 23, and the two sides of the sealing ring 23 are respectively in contact with the connector 2 and the expansion valve 3 to achieve a sealed connection between the connector 2 and the expansion valve 3. In this embodiment, the sealing ring 23 is made of rubber material.

[0061] Further, see Figure 3 In some embodiments, two sealing rings 23 are provided, and the two sealing rings 23 are disposed on the connector 2 at positions corresponding to the two diverting channels 21. In this embodiment, the two sealing rings 23 are respectively mounted on the ends of the diverting channels 21 on the side of the connector 2 facing the expansion valve 3. The diameter of the sealing ring 23 is equal to the diameter of the end of the diverting channel 21 to which it is connected, so that the end of the diverting channel 21 is in close contact with the first pipe 31 or the second pipe 32.

[0062] In this way, the sealing strength of the connection between the connector 2 and the expansion valve 3 can be improved to avoid leakage of the refrigerant, and the sealing ring 23 can make the connection between the connector 2 and the expansion valve 3 tighter, improve the connection stability, and improve the assembly effect of the battery cooler.

[0063] It can be understood that the material of the sealing ring 23 can be adjusted according to actual needs; the diameter of the sealing ring 23 can also be larger than the end diameter of the steering channel 21 connected to it, and the sealing ring 23 can also be an annular sealing ring 23 arranged around the two steering channels 21. The number, diameter and setting position of the sealing ring 23 can be flexibly adjusted to achieve a sealed connection between the connecting piece 2 and the expansion valve 3. No more examples will be listed here.

[0064] In a second aspect, the utility model provides a vehicle thermal management system, including a refrigerant circuit (not shown in the figure), a coolant circuit (not shown in the figure) and a battery cooler, and the battery cooler is connected to the refrigerant circuit and the coolant circuit.

[0065] In a third aspect, the present invention provides an automobile, including a vehicle thermal management system.

[0066] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A battery cooler, characterized in that: include: A cooler body (1), the cooler body (1) comprising a core (11), a refrigerant flow channel and a coolant flow channel, the refrigerant flow channel comprising a refrigerant inlet (12) and a refrigerant outlet (13), the refrigerant inlet (12) and the refrigerant outlet (13) being arranged on one side of the core (11); A connecting member (2), the connecting member (2) comprising two diverting flow channels (21), the extension direction of the input end of the diverting flow channel (21) being arranged at an angle to the extension direction of the output end, and the ends on the same side of the two diverting flow channels (21) being respectively connected to the refrigerant inlet (12) and the refrigerant outlet (13); An expansion valve (3) is provided with a first pipe (31) and a second pipe (32) inside the expansion valve (3), the first pipe (31) and the second pipe (32) being respectively connected to the two turning flow channels (21), the first pipe (31) being connected to the refrigerant inlet (12) through the turning flow channel (21), and the second pipe (32) being connected to the refrigerant outlet (13) through the turning flow channel (21).

2. The battery cooler according to claim 1, characterized in that The angle formed between the extension direction of the output end of the diverting flow channel (21) and the extension direction of the input end of the diverting flow channel (21) is 90°.

3. The battery cooler according to claim 1, characterized in that The output end and the input end of the diverting flow channel (21) are respectively arranged on adjacent side walls of the connecting member (2).

4. The battery cooler according to claim 1, characterized in that The battery cooler further comprises a flow channel cover plate (4) sealedly connected to the core body (11), and the connecting member (2) and the core body (11) are respectively fixedly arranged on both sides of the flow channel cover plate (4).

5. The battery cooler according to any one of claims 1 to 4, characterized in that: The connecting member (2) is connected with a connecting bolt (22), and the expansion valve (3) and the connecting member (2) are detachably connected via the connecting bolt (22).

6. The battery cooler according to claim 5, characterized in that The connecting bolt (22) is connected to the side of the connecting member (2) facing the expansion valve (3) and is located between the two diverting flow passages (21).

7. The battery cooler according to any one of claims 1 to 4, characterized in that: The connecting piece (2) is connected to a sealing ring (23), and two sides of the sealing ring (23) are respectively in contact with the connecting piece (2) and the expansion valve (3).

8. The battery cooler according to claim 7, characterized in that Two sealing rings (23) are provided, and the two sealing rings (23) are provided on the connecting member (2) at positions corresponding to the two diverting flow channels (21).

9. A vehicle thermal management system, characterized in that: The battery cooler comprises a refrigerant circuit, a coolant circuit, and the battery cooler according to any one of claims 1 to 8, wherein the battery cooler is connected to both the refrigerant circuit and the coolant circuit.

10. An automobile, characterized in that: The vehicle thermal management system comprises the vehicle thermal management system as claimed in claim 9.

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