Cooling plate, battery module and automobile

Abstract

The utility model relates to a cooling plate, a battery module and an automobile, and the cooling plate comprises a heat conducting plate, a cooling pipe and a welding layer, the cooling pipe is arranged on one side of the heat conducting plate; the welding layer is arranged between the heat conducting plate and the cooling pipe and connects the heat conducting plate with the cooling pipe. The cooling plate can avoid liquid leakage and is good in structural stability.

Description

Technical Field

[0001] This utility model relates to the field of battery cooling and heat dissipation technology, specifically to a cooling plate, a battery module, and an automobile. Background Technology

[0002] During battery use, extreme conditions such as short circuits and high-current charging / discharging can generate significant heat within the battery module. If this heat is not dissipated promptly, it can severely impact the battery module's performance, particularly its safety. Safety is paramount in vehicle power batteries; therefore, designing effective heat dissipation structures within the battery module to ensure timely heat dissipation during use or under extreme conditions is a key area of ​​research in power battery manufacturing and application.

[0003] CN 220341326 U discloses a battery cold plate structure, wherein the pipe for conveying coolant is formed by stamping, which poses a risk of coolant leakage.

[0004] CN 219476808 U discloses a battery cold plate structure, wherein the pipes used to transport coolant are also formed by stamping. Utility Model Content

[0005] The purpose of this invention is to solve the problems of leakage and poor structural stability of the cooling plate.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] According to a first aspect of this application, a cooling plate is provided, comprising: a heat-conducting plate, a cooling pipe, and a welding layer; the cooling pipe is disposed on one side of the heat-conducting plate; the welding layer is disposed between the heat-conducting plate and the cooling pipe, and connects the heat-conducting plate and the cooling pipe.

[0008] According to the above-mentioned technical means, the cooling plate uses cooling pipes to transport coolant. This eliminates the potential seams or defects that may occur during the process of forming semi-closed pipes through stamping and then welding them to the heat-conducting plate to form a sealed pipe. Since the cooling pipes are seamless, the coolant inside will not corrode them, improving the overall corrosion resistance and sealing performance of the cooling pipes. Furthermore, the continuity and integrity of the materials can be maintained during the manufacturing process, thereby improving the strength and stability of the cooling pipes. In addition, the welding layer welds the heat-conducting plate to the cooling pipes, improving the reliability of the connection between the heat-conducting plate and the cooling pipes. Therefore, the cooling plate provided in this embodiment has good corrosion resistance, sealing performance, and structural stability.

[0009] In one possible implementation, the cooling plate further includes an inlet and an outlet; the cooling pipe includes a first transition section, a second transition section, and a main body, one end of the main body is connected to the first transition section, and the other end of the main body is connected to the second transition section; the first transition section is connected to the inlet, and the second transition section is connected to the outlet.

[0010] Based on the above-mentioned technical means, the cooling plate provided in this application reduces the flow resistance of coolant in the cooling pipe and improves the cooling efficiency of the cooling plate.

[0011] In one possible implementation, the main body is bent and laid on the surface of the heat-conducting plate in multiple directions.

[0012] Based on the above-mentioned technical means, the cooling plate provided in this application can improve the uniformity and efficiency of heat dissipation.

[0013] In one possible implementation, the number of cooling pipes is at least two, with the first transition portion of each cooling pipe communicating with the liquid inlet and the second transition portion of each cooling pipe communicating with the liquid outlet.

[0014] According to the above-mentioned technical means, the cooling plate provided in this application has at least two cooling pipes. Increasing the number of cooling pipes can not only improve the cooling efficiency of the cooling plate, but also ensure that the cooling plate can still maintain a certain heat dissipation capacity when a certain cooling pipe is slightly blocked or the flow is reduced, since the other cooling pipes can still flow coolant normally. This helps to reduce the risk of cooling plate heat dissipation failure due to a single failure of the cooling pipe and can improve the reliability of cooling plate cooling.

[0015] In one possible implementation, the main bodies of at least two of the cooling pipes are evenly laid on the surface of the heat-conducting plate.

[0016] Based on the above-mentioned technical means, the cooling plate provided in this application has a large heat dissipation area, which can improve the uniformity and efficiency of heat dissipation.

[0017] In one possible implementation, the cooling pipe has a rectangular cross-sectional shape perpendicular to its extension direction.

[0018] Based on the aforementioned technical means, the cooling plate provided in this application increases the effective welding area between the cooling pipe and the heat-conducting plate. This increased effective welding area means that the welding layer can more firmly connect the cooling pipe and the heat-conducting plate, thus improving the reliability of the connection between them. It also ensures that heat can be smoothly transferred from the cooling pipe to the heat-conducting plate and dissipated. Therefore, it not only improves the heat dissipation efficiency of the cooling plate but also enhances its structural stability.

[0019] In one possible implementation, the cross-sectional dimensions of the cooling pipe are 6mm to 7mm along a first direction; and 20mm to 25mm along a second direction; the first direction is perpendicular to the heat-conducting plate, and the second direction is perpendicular to the first direction; the wall thickness of the cooling pipe is...

[0020] 0.5mm~1mm.

[0021] Based on the above technical means, the cooling plate provided in this application has a cooling pipe with a dimension in the first direction of 6mm to 7mm, which may help ensure the uniform distribution of coolant in the cooling pipe, reduce flow resistance, and improve the cooling efficiency of the cooling plate; the cooling pipe with a dimension in the second direction of 20mm to 25mm not only helps to improve the welding quality between the cooling pipe and the heat-conducting plate, but also improves the heat transfer efficiency; the wall thickness of the cooling pipe is in the range of 0.5mm to 1mm, which helps to enhance the structural strength of the cooling pipe, enabling the cooling pipe to provide certain mechanical support and withstand certain thermal stress.

[0022] In one possible implementation, the cooling pipe is a one-piece molded pipe structure.

[0023] Based on the aforementioned technical means, the cooling pipe in the cooling plate provided in this application is an integrally formed pipe structure. This eliminates the seams or defects that may occur during the process of forming a semi-closed pipe by stamping and then welding it to the heat-conducting plate to form a sealed pipe. This improves the sealing performance of the cooling pipe and reduces the risk of coolant leakage in the cooling pipe. Since there are no seams, the overall corrosion resistance of the cooling pipe is also improved. In addition, the integrally formed pipe structure can maintain the continuity and integrity of the material during the manufacturing process, thereby improving the strength and stability of the cooling pipe.

[0024] According to a second aspect of this application, a battery module is provided, comprising: a cooling plate and a cell assembly as described in any of the above embodiments, wherein the cell assembly is disposed on one side of the cooling plate.

[0025] According to a third aspect of this application, an automobile is provided, comprising: the battery module and battery management system described in any of the above embodiments, wherein the battery management system is connected to the battery module.

[0026] The beneficial effects of this utility model are:

[0027] (1) The cooling plate of this application uses cooling pipes to transport coolant, thus eliminating the seams or defects that may occur during the process of forming a semi-closed pipe by stamping and then welding it to the heat-conducting plate to form a sealed pipe. Since the cooling pipe has no seams, the coolant inside the cooling pipe will not corrode it, improving the overall corrosion resistance and sealing performance of the cooling pipe. Furthermore, the cooling pipe can maintain the continuity and integrity of the materials during the manufacturing process, thereby improving the strength and stability of the cooling pipe. In addition, the welding layer welds the heat-conducting plate to the cooling pipe, improving the reliability of the connection between the heat-conducting plate and the cooling pipe. Therefore, the cooling plate provided in this embodiment has good corrosion resistance, sealing performance, and structural stability.

[0028] (2) The cooling plate of this application reduces the flow resistance of the coolant in the cooling pipe and improves the cooling efficiency of the cooling plate.

[0029] (3) The cooling plate provided in this application can improve the uniformity and efficiency of heat dissipation.

[0030] (4) The cooling plate of this application can not only improve the cooling efficiency of the cooling plate, but also improve the reliability of the cooling plate.

[0031] (5) The cooling plate of this application also helps to enhance the structural strength of the cooling pipe, enabling the cooling pipe to provide certain mechanical support and withstand certain thermal stress.

[0032] (6) The cooling plate of this application improves the sealing performance and overall corrosion resistance of the cooling pipe, as well as the strength and stability of the cooling pipe.

[0033] It should be noted that the technical effects of the second and third implementation methods can be found in the technical effects of the corresponding implementation methods in the first aspect, and will not be repeated here.

[0034] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0035] Figure 1 The diagram shown is a structural diagram of a cooling plate as an exemplary embodiment.

[0036] Figure 2 The diagram shown is a structural diagram of a cooling plate as an exemplary embodiment.

[0037] Figure 3 The diagram shown is a structural diagram of a cooling plate as an exemplary embodiment.

[0038] Figure 4 The diagram shown is a cross-sectional view of a cooling pipe as an exemplary embodiment.

[0039] Figure 5 The diagram shown is a cross-sectional view of a cooling pipe as an exemplary embodiment.

[0040] Figure 6 The diagram shown is a structural diagram of a battery module as an exemplary embodiment.

[0041] In the diagram, 100-cooling plate, 101-heat-conducting plate, 102-cooling pipe, 103-welding layer, 104-liquid inlet, 105-liquid outlet, 11-first transition section, 12-second transition section, 13-main body, X-first direction, Y-second direction, L1-size, L2-size, H-thickness, 1000-cell module, 200-cell assembly, 300-thermal conductive structural adhesive; 400-battery top cover, 500-top cover sealing cotton, 600-battery frame assembly, 700-cold plate buffer cotton, 800-bottom protective plate. Detailed Implementation

[0042] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0043] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0044] In the description of this application, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or relative positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Unless otherwise specified, the above-mentioned orientational descriptions can be flexibly set in practical applications, provided that the relative positional relationships shown in the accompanying drawings are satisfied.

[0045] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "communication" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0046] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, article, or apparatus that includes that element.

[0047] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0048] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0049] Some embodiments of this disclosure provide a cooling plate 100, see reference Figure 1 It includes: a heat-conducting plate 101, a cooling pipe 102 and a welding layer 103; the cooling pipe 102 is disposed on one side of the heat-conducting plate 101; the welding layer 103 is disposed between the heat-conducting plate 101 and the cooling pipe 102, and connects the heat-conducting plate 101 and the cooling pipe 102.

[0050] In this embodiment, the cooling plate 100 uses cooling pipes 102 to transport coolant. This eliminates the seams or defects that may occur during the process of forming a semi-closed pipe by stamping, which requires welding to the heat-conducting plate 101 to form a sealed pipe. Since the cooling pipe 102 has no seams, the coolant inside the cooling pipe 102 will not corrode it, improving the overall corrosion resistance and sealing performance of the cooling pipe 102. Furthermore, the cooling pipe 102 maintains material continuity and integrity during manufacturing, thereby improving its strength and stability. In addition, the welding layer 103 welds the heat-conducting plate 101 to the cooling pipe 102, improving the reliability of the connection between the heat-conducting plate 101 and the cooling pipe 102. Therefore, the cooling plate 100 provided in this embodiment has good corrosion resistance, sealing performance, and structural stability.

[0051] In some embodiments, the material of the weld layer 103 includes brazing wire. Because brazing wire has good thermal conductivity, it helps transfer heat from the cooling pipe 102 to the heat-conducting plate 101, improving the cooling efficiency of the cooling plate 100; and because brazing wire also has good chemical stability, it is not easily corroded or oxidized, which can extend the service life of the cooling plate 100; furthermore, the brazing process for forming the weld layer 103 is relatively simple and easy to control, which can simplify the efficiency of forming the cooling plate 100.

[0052] In some embodiments, in conjunction with reference Figure 2 and Figure 3 The cooling plate 100 also includes an inlet 104 and an outlet 105. The inlet 104 and the outlet 105 reduce the flow resistance of the coolant in the cooling pipe 102 and improve the cooling efficiency of the cooling plate 100.

[0053] In some embodiments, both the liquid inlet 104 and the liquid outlet 105 face the heat guide plate 101.

[0054] In some embodiments, the reference continues Figure 2 and Figure 3 The cooling pipe 102 includes a first transition section 11, a second transition section 12, and a main body section 13. One end of the main body section 13 is connected to the first transition section 11, and the other end of the main body section 13 is connected to the second transition section 12. The first transition section 11 is connected to the liquid inlet 104, and the second transition section 12 is connected to the liquid outlet 105.

[0055] In some embodiments, the main body 13 is bent and laid on the surface of the heat-conducting plate 101 in multiple directions. This increases the contact area between the heat-conducting plate 101 and the main body 13, thereby increasing the speed at which heat is transferred from the cooling pipe 102 to the heat-conducting plate 101 and improving the heat dissipation performance of the cooling plate 100.

[0056] In some embodiments, the number of cooling pipes 102 is at least two, with the first transition portion 11 of each cooling pipe 102 communicating with the liquid inlet 104 and the second transition portion 12 of each cooling pipe 102 communicating with the liquid outlet 105. The increased number of cooling pipes 102 not only improves the cooling efficiency of the cooling plate 100, but also ensures that the cooling plate 100 maintains a certain heat dissipation capacity even if a cooling pipe 102 experiences slight blockage or reduced flow, as the other cooling pipes 102 can still flow coolant normally. This helps reduce the risk of cooling plate 100 failing due to a single failure of a cooling pipe 102, thus improving the reliability of cooling.

[0057] For example, refer to Figure 3 The cooling pipe 102 has two sections. The first transition section 11 of both cooling pipes 102 is connected to the liquid inlet 104, and the second transition section 12 of both cooling pipes 102 is connected to the liquid outlet 105. In other embodiments, the number of cooling pipes 102 can also be three, four, or five, or other numbers, to ensure the reliability of cooling of the cooling plate 100.

[0058] In some embodiments, the main body 13 of at least two cooling pipes 102 are evenly laid on the surface of the heat-conducting plate 101. This ensures that the cooling pipes 102 are in uniform contact with the cooling plate, thereby improving the uniformity and efficiency of heat dissipation from the cooling plate 100.

[0059] For example, refer to Figure 3 The main body 13 of the two cooling pipes 102 is evenly laid on the surface of the heat-conducting plate 101.

[0060] In some embodiments, the cooling pipe 102 has a rectangular cross-sectional shape perpendicular to its extension direction. This increases the effective welding area between the cooling pipe 102 and the heat-conducting plate 101. The increased effective welding area means that the welding layer 103 can more firmly connect the cooling pipe 102 and the heat-conducting plate 101, thus improving the reliability of the connection between them and ensuring that heat can be smoothly transferred from the cooling pipe 102 to the heat-conducting plate 101 and dissipated. Therefore, this not only improves the heat dissipation efficiency of the cooling plate 100 but also enhances its structural stability. Furthermore, the reliability of the connection between the cooling pipe 102 and the heat-conducting plate 101 directly affects the heat dissipation effect of the cooling plate 100. A weak connection will obstruct heat transfer and affect the cooling effect. Increasing the welding area improves the reliability of the connection, ensuring that heat can be smoothly transferred from the cooling pipe 102 to the heat-conducting plate 101 and dissipated, thereby improving the heat dissipation efficiency of the cooling plate 100.

[0061] For example, refer to Figure 4 The cooling pipe 102 has a rectangular cross-section with rounded corners in the direction perpendicular to its extension. This shape of cooling pipe 102 can be formed by directly extruding a round tube, making it easy to manufacture.

[0062] For example, refer to Figure 5 The cross-sectional shape of the cooling pipe 102 perpendicular to the extension direction of the cooling pipe 102 is a standard rectangle.

[0063] In some embodiments, the material of the cooling pipe 102 includes aluminum alloy. Because aluminum alloy has corrosion resistance and formability, it can be formed into a rectangular tube using a forming process and an extrusion die to form a flat tube. Alternatively, the length and width of the cooling pipe 102 can be adjusted according to thermal management performance requirements, and then bent into the desired shape using a bending process. Figure 3 As shown in the structure, the bending shape of the cooling pipe 102 can be bent multiple times according to different thermal management requirements, thereby lengthening the path through which the coolant flows and improving cooling and heating performance.

[0064] Since the cooling pipe 102 can be formed by directly extruding a round tube and then bending it multiple times, it is simpler than the stamping process. Furthermore, the development cost of extrusion dies is lower than that of stamping dies, and the development cycle of extrusion dies is about one month, less than half the development cycle of stamping dies. However, the development cost of stamping dies is more than 20 times that of extrusion dies, even though the coolant follows the same path.

[0065] For example, if the coolant follows the same path, by using a bent flat tube, the weight of the cooling tube 102 is about 1.5 kg, which is about 50% lighter than the weight of the traditional stamped flow channel plate of about 3 kg, and the cost will be significantly reduced.

[0066] refer to Figure 4 Along the first direction X, the cross-sectional dimension L1 of the cooling pipe 102 is 6mm to 7mm, for example: 6mm, 6.5mm, 6.8mm, or 7mm; referring to the reference. Figure 1 and Figure 4 The first direction X is perpendicular to the heat-conducting plate 101. The dimensions of the cooling pipe 102 along the first direction X are within this range, which may help ensure uniform distribution of coolant within the cooling pipe 102, reduce flow resistance, and improve the cooling efficiency of the cooling plate 100.

[0067] refer to Figure 4 Along the second direction Y, the cross-sectional dimension L2 of the cooling pipe 102 is 20mm to 25mm; for example: 20mm, 22mm, 23mm or 25mm; the second direction Y is perpendicular to the first direction X; the dimension of the cooling pipe 102 along the second direction Y is within this range, which not only helps to improve the welding quality between the cooling pipe 102 and the heat-conducting plate 101, but also improves the heat conduction efficiency.

[0068] refer to Figure 4 The wall thickness H of the cooling pipe 102 is 0.5mm to 1mm; for example, 0.5mm, 0.6mm, 0.8mm or 1mm. The wall thickness H of the cooling pipe 102 is within this range, which helps to enhance the structural strength of the cooling pipe 102, enabling the cooling pipe 102 to provide certain mechanical support and withstand certain thermal stress.

[0069] In some embodiments, the cooling pipe 102 is a one-piece molded pipe structure. This eliminates the seams or defects that may occur during the process of forming a semi-enclosed pipe by stamping and welding it to the heat-conducting plate 101 to form a sealed pipe, thereby improving the sealing performance of the cooling pipe 102 and reducing the risk of coolant leakage in the cooling pipe 102. Since there are no seams, the overall corrosion resistance of the cooling pipe 102 is also improved. In addition, the one-piece molded pipe structure can maintain the continuity and integrity of the material during the manufacturing process, thereby improving the strength and stability of the cooling pipe 102.

[0070] refer to Figure 6 The embodiments of this disclosure also provide a battery module 1000, including: a cooling plate 100 and a cell assembly 200 as described in any of the above embodiments, wherein the cell assembly 200 is disposed on one side of the cooling plate 100.

[0071] In some embodiments, the cell assembly 200 includes a plurality of cells connected together in series or in parallel to meet the voltage and capacity requirements of the battery module 1000.

[0072] Continue to refer to Figure 6 The battery module 1000 also includes a thermally conductive structural adhesive 300, disposed between the cell assembly 200 and the cooling plate 100. The thermally conductive structural adhesive 300 bonds the cell assembly 200 to the cooling plate 100, enhancing the structural strength of the battery module 1000 and preventing damage during vibration or impact. The thermally conductive structural adhesive 300 also effectively conducts the heat generated by the cell assembly 200 during operation to the cooling plate 100, thereby reducing the internal temperature of the cell assembly 200, preventing overheating, and contributing to improved performance and lifespan.

[0073] Continue to refer to Figure 6 The battery module 1000 also includes: a battery top cover 400, a top cover sealing cotton 500, a battery frame assembly 600, a cold plate buffer cotton 700, and a bottom protective plate 800.

[0074] Among them, the battery cover 400 is the top cover of the cell assembly 200, which is used to protect the cell assembly 200 and other components from the influence of the external environment, such as dust, moisture and physical impact.

[0075] The top cover sealing cotton 500 is placed between the battery top cover 400 and the cell assembly 200 to provide an additional sealing effect, prevent liquid or gas penetration, and ensure the sealing and safety of the cell assembly 200.

[0076] The battery frame assembly 600 is the supporting structure of the battery module 1000, used to fix and protect internal components such as the cell assembly 200 and the cooling plate 100. The battery frame assembly 600 is typically made of metal or alloy materials and has sufficient strength and rigidity to withstand various forces that the cell assembly 200 may encounter during operation and transportation.

[0077] Cold plate buffer cotton 700 is disposed between the cooling plate 100 and the cell assembly 200 or other internal components to reduce the damage to the cooling plate 100 and the cell assembly 200 caused by vibration and impact, and also helps to improve the sealing and heat insulation performance of the battery module 1000.

[0078] The underbody protection plate 800 is the bottom cover of the battery cell assembly 200, used to protect the battery cell assembly 200 from damage caused by external factors such as ground impacts and flying stones. The underbody protection plate 800 also provides additional structural support and stability, ensuring the safety of the battery cell assembly 200 during vehicle operation.

[0079] Embodiments of this disclosure also provide a vehicle, including: a battery module 1000 and a battery management system as provided in any of the above embodiments, wherein the battery module 1000 is connected to the battery management system. The battery management system is responsible for monitoring parameters such as voltage, current, and temperature of the battery module 1000 to ensure that the battery module 1000 operates within a safe and efficient range. Simultaneously, the battery management system is also responsible for the equalization management of the battery module 1000 to extend battery life.

[0080] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A cooling plate (100), characterized in that, include: Heat-conducting plate (101); A cooling pipe (102) is disposed on one side of the heat-conducting plate (101); A welding layer (103) is provided between the heat-conducting plate (101) and the cooling pipe (102), and connects the heat-conducting plate (101) and the cooling pipe (102).

2. The cooling plate (100) according to claim 1, characterized in that, The cooling plate (100) further includes: a liquid inlet (104) and a liquid outlet (105); The cooling pipe (102) includes: a first transition section (11), a second transition section (12) and a main body section (13), one end of the main body section (13) is connected to the first transition section (11), and the other end of the main body section (13) is connected to the second transition section (12); The first transition section (11) is connected to the liquid inlet (104), and the second transition section (12) is connected to the liquid outlet (105).

3. The cooling plate (100) according to claim 2, characterized in that, The main body (13) is laid in multiple directions on the surface of the heat-conducting plate (101).

4. The cooling plate (100) according to claim 2, characterized in that, The number of cooling pipes (102) is at least two, the first transition portion (11) of each cooling pipe (102) is connected to the liquid inlet (104), and the second transition portion (12) of each cooling pipe (102) is connected to the liquid outlet (105).

5. The cooling plate (100) according to claim 4, characterized in that, The main body (13) of at least two of the cooling pipes (102) is evenly laid on the surface of the heat-conducting plate (101).

6. The cooling plate (100) according to any one of claims 1 to 5, characterized in that, The cross-sectional shape of the cooling pipe (102) perpendicular to the extension direction of the cooling pipe (102) is rectangular.

7. The cooling plate (100) according to claim 6, characterized in that, Along the first direction (X), the cross-sectional dimensions of the cooling pipe (102) are 6mm to 7mm; along the second direction (Y), the cross-sectional dimensions of the cooling pipe are 20mm to 25mm; the first direction is perpendicular to the heat-conducting plate, and the second direction (Y) is perpendicular to the first direction (X); The wall thickness (H) of the cooling pipe (102) is 0.5 mm to 1 mm.

8. The cooling plate (100) according to any one of claims 1 to 5, characterized in that, The cooling pipe (102) is an integrally formed pipe structure.

9. A battery module (1000), characterized in that, include: Cooling plate (100) as described in any one of claims 1 to 8; The battery cell assembly (200) is disposed on one side of the cooling plate (100).

10. A car, characterized in that, include: The battery module as described in claim 9; A battery management system is connected to the battery module.

Images