Cooling assembly, battery pack, and vehicle

Abstract

The present application relates to the technical field of vehicles, and in particular to a cooling assembly, a battery pack, and a vehicle. The cooling assembly provided by the present application comprises a cooling plate and adapters; the adapters are arranged at the ends of the cooling plate; each adapter comprises connecting plates and an adapter plate which are connected to each other, the connecting plates are fixed to the cooling plate, and the adapter plate is provided with an adapter part. According to the present application, connection with another component is implemented by means of the adapter parts of the adapter plates, such that the mounting area of the cooling assembly is located in the adapter parts instead of the cooling plate, and thus the adapter plates are used as supports and the stress on the cooling plate is transferred to the adapter plates, thereby improving the connection strength and stability.

Description

Cooling components, battery packs and vehicles

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on August 15, 2023, with application number 202322195814.2 and application name “Cooling assembly, battery pack and vehicle”, all contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of vehicle technology, and in particular to a cooling assembly, a battery pack, and a vehicle. Background Art

[0004] With the increasing demand for energy density in power battery systems, lightweighting of battery systems is an inevitable trend in future development. Liquid cooling is a common method used in current battery thermal management systems, and liquid cold plates, as core components, are also moving towards lightweighting. Conventional liquid cold plates are mostly made of 3-series aluminum stamped and brazed. However, 3-series aluminum liquid cold plates are relatively weak and cannot serve as structural support components, resulting in low connection strength.

[0005] Overview

[0006] In order to solve the above technical problems, the present application provides a cooling assembly, a battery pack and a vehicle.

[0007] A first aspect of the present application provides a cooling assembly, comprising: a cooling plate and an adapter;

[0008] The adapter is arranged at the end of the cooling plate;

[0009] The adapter comprises a connecting plate and an adapter plate which are connected to each other, the connecting plate is fixed to the cooling plate, and the adapter plate has an adapter portion.

[0010] In some embodiments, the connecting plate includes a first connecting plate and a second connecting plate that are spaced apart, a cooling plate fixing groove is formed between the first connecting plate and the second connecting plate, and the cooling plate is disposed in the cooling plate fixing groove.

[0011] In some embodiments, a first rib is provided between the adapter plate and the first connecting plate, and the first rib is connected to the adapter plate and the first connecting plate respectively;

[0012] And / or, a second rib is provided between the adapter plate and the second connecting plate, and the second rib is connected to the adapter plate and the second connecting plate respectively.

[0013] In some embodiments, the cooling plate is provided with a water nozzle, and the first connecting plate is provided with a first avoidance gap for avoiding the water nozzle;

[0014] The second connecting plate is provided with a second avoidance gap for avoiding the water nozzle.

[0015] In some embodiments, the adapter includes a reinforcement member, which is respectively connected to the adapter plate and the connecting plate. The adapter portion is provided with a mounting hole, which passes through the adapter portion and is provided on the reinforcement member.

[0016] In some embodiments, the cooling plate includes a main body and mounting portions provided at both ends of the main body in the length direction X, and the adapter plate is connected to the mounting portions;

[0017] Along the height direction Z, the height of the mounting portion is smaller than the height of the main body portion, and a connection area between the mounting portion and the main body portion forms a rounded corner.

[0018] In some embodiments, along the length direction X of the main body, the minimum distance L between the adapter plate and the main body satisfies: L ≥ 10 mm;

[0019] And / or, along the height direction Z of the mounting portion, a height H1 of the mounting portion and a height H2 of the adapter plate satisfy 1 mm ≤ H1 - H2 ≤ 3 mm.

[0020] In some embodiments, a glue overflow groove is provided at the bottom of the cooling plate, and the glue overflow groove extends along the length direction X of the cooling plate;

[0021] And / or, the extending direction of the adapter plate is perpendicular to the length direction X of the cooling plate.

[0022] In some embodiments, the cooling plate includes a flow channel region, the flow channel region is provided with a flow channel, and an end portion of the cooling plate has an opening communicating with the flow channel;

[0023] A sealing piece is provided between the adapter and the cooling plate, and the sealing piece is connected to the cooling plate and is used for sealing the opening.

[0024] In some embodiments, the blocking member includes a blocking portion and a widened portion, wherein the end surface of the blocking portion facing the opening cooperates with the opening to block the opening;

[0025] There is a smooth transition between the blocking portion and the widened portion, and / or, along the height direction Z of the cooling plate, the height H3 of the widened portion and the height H4 of the blocking portion satisfy the following relationship: 2mm≤H3-H4≤5mm.

[0026] In some embodiments, an isolation groove is provided on a side of the adapter plate facing away from the connecting plate.

[0027] In some embodiments, a flange is provided on an inner wall of at least one of the first connecting plate and the second connecting plate, and the flange is at least partially aligned with the glue overflow groove.

[0028] In some embodiments, a clamping groove is provided on an outer wall of at least one of the first connecting plate, the second connecting plate, the first rib plate, and the second rib plate.

[0029] A second aspect of the present application provides a battery pack comprising the cooling assembly of the first aspect.

[0030] A third aspect of the present application provides a vehicle comprising the battery pack of the second aspect.

[0031] The technical solution provided by the embodiments of the present application has the following advantages compared with the prior art:

[0032] The cooling assembly provided in an embodiment of the present application includes: a cooling plate and an adapter; the adapter is disposed at the end of the cooling plate; the adapter includes a connecting plate and an adapter plate that are interconnected, the connecting plate being fixed to the cooling plate, and the adapter plate having an adapter portion. When the cooling plate is installed, the adapter portion of the adapter plate can be connected to other components, so that the installation area of ​​the cooling assembly is located on the adapter portion rather than on the cooling plate. The adapter plate thus acts as a support member, transferring the force applied to the cooling plate to the adapter plate, thereby improving the strength and stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] FIG1 is a schematic structural diagram of a cooling assembly according to an embodiment of the present application;

[0034] FIG2 is a schematic structural diagram of one end of a cooling assembly according to an embodiment of the present application;

[0035] FIG3 is a schematic structural diagram of a transition piece in a cooling assembly according to an embodiment of the present application;

[0036] FIG4 is a schematic structural diagram of one end of a cooling plate in a cooling assembly according to an embodiment of the present application;

[0037] FIG5 is a schematic structural diagram of the other end of the cooling assembly according to an embodiment of the present application;

[0038] FIG6 is a schematic structural diagram of the other end of the cooling plate in the cooling assembly according to an embodiment of the present application;

[0039] FIG7 is a side view of a cooling plate in a cooling assembly according to an embodiment of the present application;

[0040] FIG8 is a cross-sectional view of a cooling plate in a cooling assembly according to an embodiment of the present application;

[0041] FIG9 is a schematic structural diagram of a blocking member in a cooling assembly according to an embodiment of the present application;

[0042] FIG10 is a schematic diagram of another structure of a blocking member in a cooling assembly according to an embodiment of the present application;

[0043] FIG11 is another schematic diagram of the structure of a blocking member in a cooling assembly according to an embodiment of the present application;

[0044] FIG12a is another schematic diagram of the structure of the adapter in the cooling assembly according to an embodiment of the present application;

[0045] FIG12 b is another schematic diagram of the structure of the adapter in the cooling assembly according to an embodiment of the present application;

[0046] FIG13a is another schematic diagram of the structure of the adapter in the cooling assembly according to an embodiment of the present application;

[0047] FIG13 b is another schematic diagram of the structure of the adapter in the cooling assembly according to an embodiment of the present application;

[0048] FIG14 is another schematic structural diagram of the adapter in the cooling assembly according to an embodiment of the present application.

[0049] Explanation of the accompanying drawings: 1. Cooling plate; 11. Main body; 12. Mounting part; 13. Fillet; 14. Flow channel; 141. Opening; 15. Glue overflow groove; 2. Adapter; 21. First connecting plate; 211. First flange; 22. Second connecting plate; 221. Second sub-groove; 23. First rib; 24. Second rib; 241. Fourth sub-groove; 25. Adapter plate; 251. Adapter part; 252. Isolation groove; 26. Reinforcement member; 27. Cooling plate fixing groove; 3. Water nozzle; 4. Sealing part; 41. Sealing part; 42. Widening part.

[0050] Detailed description

[0051] In order to more clearly understand the above-mentioned objectives, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0052] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application can also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present application, not all of the embodiments.

[0053] As shown in Figures 1, 2, 3, 4 and 5, the cooling assembly provided in the embodiment of the present application includes a cooling plate 1 and an adapter 2; the adapter 2 is arranged at the end of the cooling plate 1; wherein the adapter 2 includes a connecting plate and an adapter plate 25 connected to each other, the connecting plate is fixed to the cooling plate 1, and the adapter plate 25 has a connecting portion 251. The connecting portion 251 of the adapter plate 25 is used for installation and fixation with other structures, and has high strength. When the cooling plate 1 is installed, it can be connected to other components through the connecting portion 251 of the adapter plate 25, so that the installation area of ​​the cooling assembly is located at the adapter portion 251 instead of the cooling plate 1, so that the adapter plate 25 acts as a support member, transferring the force of the cooling plate 1 to the adapter plate 25 of the adapter 2, thereby improving the strength and stability of the connection.

[0054] In some embodiments, the adapter plate 25 is connected to the cooling plate 1 by welding.

[0055] In some embodiments, the cooling plate 1 may be a liquid cooling plate.

[0056] In some embodiments, the connecting plate includes a first connecting plate 21 and a second connecting plate 22 arranged at intervals, and a cooling plate fixing groove 27 is formed between the first connecting plate 21 and the second connecting plate 22. The cooling plate 1 is arranged in the cooling plate fixing groove 27, which can improve the stability of the connection between the connecting plate and the cooling plate 1.

[0057] In some embodiments, a first rib 23 is provided between the adapter plate 25 and the first connecting plate 21 . The first rib 23 is connected to the adapter plate 25 and the first connecting plate 21 , respectively, which can improve the strength and stability of the adapter 2 .

[0058] In some embodiments, a second rib 24 is provided between the adapter plate 25 and the second connecting plate 22 . The second rib 24 is connected to the adapter plate 25 and the second connecting plate 22 , respectively, which can improve the strength and stability of the adapter 2 .

[0059] As shown in Figures 2 and 3, the cooling plate 1 is provided with a water spout 3. The first connecting plate 21 is provided with a first clearance notch for accommodating the water spout 3; the second connecting plate 22 is provided with a second clearance notch for accommodating the water spout 3. The provision of the first and second clearance notches facilitates installation of the water spout 3. In some embodiments, the water spout 3 is connected to the cooling plate 1 by welding. The provision of the first and second clearance notches facilitates welding of the water spout 3 to the cooling plate 1, prevents weld interference, and improves welding efficiency.

[0060] In some embodiments, the adapter portion 251 is provided with a mounting hole. When the cooling plate 1 is installed, it can be installed through the mounting hole. The mounting hole is located on the adapter portion 251 instead of on the cooling plate 1, so that the adapter plate 25 serves as a support member, thereby transferring the force of the cooling plate 1 to the adapter plate 25 of the adapter 2, thereby improving the strength and stability of the connection.

[0061] In some embodiments, the cooling assembly further includes a reinforcement member 26. In some embodiments, the adapter 2 includes the reinforcement member 26, which is connected to the adapter plate 25 and the connecting plate, respectively. The adapter portion 251 is provided with a mounting hole, which passes through the adapter portion 251 and is provided in the reinforcement member 26, thereby improving the strength and stability of the adapter 2. The reinforcement member 26 can be in a block, column, plate, or other shape.

[0062] In some embodiments, the cooling plate 1 includes a main body 11 and mounting portions 12 disposed at both ends of the main body 11 in the longitudinal direction X. The adapter plate 25 is connected to the mounting portions 12. In some embodiments, the mounting portion 12 is provided with an escape groove for avoiding the crossbeam or longitudinal beam of the battery pack box, and the mounting portion 12 is disposed above the escape groove.

[0063] Along the height direction Z, the height of the mounting portion 12 is smaller than that of the main body 11 , and a fillet 13 is formed in the connection area between the mounting portion 12 and the main body 11 , which can reduce the influence of the heat-affected zone or stress concentration on the strength.

[0064] As shown in Figure 5 , along the length direction X of the main body 11, the minimum distance L between the adapter plate 25 and the main body 11 satisfies the following: L ≥ 10 mm. For example, L can be 10 mm, 11 mm, or 12 mm. When L ≥ 10 mm, increasing the length of the mounting portion 12 can increase its area, distributing the applied force through the mounting portion 12 and reducing the impact of stress concentration caused by the height difference between the mounting portion 12 and the main body 11 on the strength of the cooling assembly.

[0065] In some embodiments, along the height direction Z of the mounting portion 12, the height H1 of the mounting portion 12 and the height H2 of the adapter plate 25 satisfy 1mm≤H1-H2≤3mm; illustratively, H1-H2 can be 1mm, 2mm or 3mm; when 1mm≤H1-H2≤3mm, welding can be facilitated and weld interference can be prevented from affecting strength, and welding efficiency can also be improved.

[0066] As shown in Figures 5, 6 and 7, a glue overflow groove 15 is provided at the bottom of the cooling plate 1, which extends along the length direction X of the cooling plate 1; it is used to guide the glue overflow when thermal conductive glue is used to bond the cooling plate 1 and the battery, thereby reducing glue overflow from the upper part of the cooling plate 1.

[0067] In some embodiments, the extension direction of the adapter plate 25 is perpendicular to the length direction X of the cooling plate 1, so that the adapter plate 25 serves as a support member, thereby transferring the force of the cooling plate 1 to the adapter plate 25 of the adapter 2, thereby improving the strength and stability of the connection.

[0068] As shown in FIG1 , FIG2 and FIG8 , the cooling plate 1 includes a flow channel region, the flow channel region is provided with a flow channel 14 , and the end of the cooling plate 1 has an opening 141 connected to the flow channel 14 ;

[0069] A blocking member 4 is provided between the adapter 2 and the cooling plate 1 . The blocking member 4 is connected to the cooling plate 1 and is used to block the opening 141 .

[0070] As shown in Figures 9, 10 and 11, the sealing member 4 includes a sealing portion 41 and a widened portion 42. The end surface of the sealing portion 41 facing the opening 141 cooperates with the opening 141 to seal the opening 141. Specifically, the most suitable structure can be selected according to different welding tooling or welding parameters to ensure the airtightness of the weld.

[0071] There is a smooth transition between the sealing portion 41 and the widened portion 42. In some embodiments, the front and rear sealing parts 4 of the cooling plate 1, the sealing portion 41 of the sealing part 4 is flush with the end of the flow channel area of ​​the cooling plate 1 before welding, and the end is widened. The most suitable structure can be selected according to different welding tooling or welding parameters to ensure the airtightness of the weld.

[0072] Along the height direction Z of the cooling plate 1, the height H3 of the widened portion 42 and the height H4 of the blocking portion 41 satisfy the following relationship: 2mm ≤ H3 - H4 ≤ 5mm. For example, H3 - H4 can be 2mm, 3.5mm, or 5mm. When 2mm ≤ H3 - H4 ≤ 5mm, this end widening structure effectively ensures airtightness during welding at the blocking member 4, improving welding efficiency.

[0073] In some embodiments, an isolation groove is provided on the side of the adapter plate 25 facing away from the connection plate. By providing the isolation groove 252 on the adapter plate, the contact area between the adapter 2 and the box beam can be reduced, thereby improving the thermal insulation capacity.

[0074] Among them, the isolation groove 252 can be set in the middle area of ​​the side of the adapter plate 25 facing away from the connecting plate, or it can be set in the edge area of ​​the side of the adapter plate 25 facing away from the connecting plate, and it can also include multiple sub-grooves, which are evenly arranged on the side of the adapter plate 25 facing away from the connecting plate.

[0075] As shown in FIG12 a , the connecting plate includes a first connecting plate 21 and a second connecting plate 22 that are spaced apart. The first connecting plate 21 and the second connecting plate 22 are spaced apart on one side of the adapter plate 25 . An isolation groove 252 is provided on the other side of the adapter plate 25 .

[0076] As shown in Figure 12b, the connecting plate includes a first connecting plate 21 and a second connecting plate 22 spaced apart from each other. The first connecting plate 21 and the second connecting plate 22 are spaced apart on one side of the adapter plate 25. A first rib 23 is provided between the adapter plate 25 and the first connecting plate 21, and the first rib 23 is connected to the adapter plate 25 and the first connecting plate 21 respectively. A second rib 24 is provided between the adapter plate 25 and the second connecting plate 22, and the second rib 24 is connected to the adapter plate 25 and the second connecting plate 22 respectively. An isolation groove 252 is provided on the other side of the adapter plate 25.

[0077] In some embodiments, a flange is provided on the inner wall of at least one of the first connecting plate 21 and the second connecting plate 22 , and the flange is at least partially aligned with the glue overflow groove.

[0078] Among them, the inner wall of the bottom of the first connecting plate 21 can be provided with a flange; in addition, the inner wall of the bottom of the second connecting plate 22 can also be provided with a flange, and the flange can be at least partially aligned with the overflow glue groove 15; thus, when the liquid cooling plate is inserted into the cooling plate fixing groove 27 of the adapter, the flange can cooperate with the overflow glue groove 15 to reduce the gap at the bottom of the adapter 2, thereby improving the connection strength between the adapter 2 and the liquid cooling plate.

[0079] In some embodiments, the flange may include a first flange 211 disposed on the bottom inner wall of the first connecting plate 21 and / or disposed on the bottom inner wall of the second connecting plate 22 .

[0080] As shown in Figure 13a, the connecting plate includes a first connecting plate 21 and a second connecting plate 22 arranged at intervals; the inner wall of the bottom of the first connecting plate 21 can be provided with a first flange 211, and the inner wall of the bottom of the second connecting plate 22 can also be provided with a second flange (not shown in Figure 13a).

[0081] As shown in FIG13b , the connecting plate includes a first connecting plate 21 and a second connecting plate 22 spaced apart from each other; a first rib 23 is provided between the adapter plate 25 and the first connecting plate 21, and the first rib 23 is connected to the adapter plate 25 and the first connecting plate 21, respectively; a second rib 24 is provided between the adapter plate 25 and the second connecting plate 22, and the second rib 24 is connected to the adapter plate 25 and the second connecting plate 22, respectively. The inner wall of the bottom of the first connecting plate 21 may be provided with a first flange 211, and the inner wall of the bottom of the second connecting plate 22 may also be provided with a second flange (not shown in FIG13a ).

[0082] In some embodiments, a clamping groove is provided on the outer wall of at least one of the first connecting plate 21, the second connecting plate 22, the first rib 23, and the second rib 24 to facilitate clamping of tools during processing. The clamping groove may include a first sub-groove on the first connecting plate 21, a second sub-groove on the second connecting plate 22, a third sub-groove on the first rib 23, and / or a fourth sub-groove on the second rib.

[0083] As shown in Figure 14, the connecting plate includes a first connecting plate 21 and a second connecting plate 22 arranged at intervals; the outer wall of the first connecting plate 21 is provided with a first sub-groove (not shown in Figure 14); in addition, the outer wall of the second connecting plate 22 can also be provided with a second sub-groove 221.

[0084] In some embodiments, a third sub-groove (not shown in FIG. 14 ) may be provided on the outer wall of the first rib 23 ; in addition, a fourth sub-groove 241 may be provided on the outer wall of the second rib 24 .

[0085] In some embodiments, the bottoms of the third sub-groove and the fifth groove may be coplanar, and the bottoms of the fourth groove 221 and the sixth groove 241 may be coplanar, to facilitate clamping of tools during processing.

[0086] The battery pack provided in the embodiments of the present application includes the cooling assembly provided in the embodiments of the present application. The vehicle provided in the embodiments of the present application includes the battery pack provided in the embodiments of the present application. Since the vehicle or battery pack provided in the embodiments of the present application has the same advantages as the cooling assembly provided in the embodiments of the present application, they will not be described in detail here.

[0087] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article or device. In the absence of further limitations, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

Claims

1. A cooling assembly, characterized in that: include: Cooling plates and adapters; The adapter is arranged at the end of the cooling plate; The adapter comprises a connecting plate and an adapter plate which are connected to each other, the connecting plate is fixed to the cooling plate, and the adapter plate has an adapter portion.

2. The cooling assembly according to claim 1, characterized in that The connecting plate comprises a first connecting plate and a second connecting plate which are spaced apart from each other, a cooling plate fixing groove is formed between the first connecting plate and the second connecting plate, and the cooling plate is arranged in the cooling plate fixing groove.

3. The cooling assembly according to claim 2, characterized in that: A first rib is provided between the adapter plate and the first connecting plate, and the first rib is connected to the adapter plate and the first connecting plate respectively; And / or, a second rib plate is provided between the adapter plate and the second connecting plate, and the second rib plate is connected to the adapter plate and the second connecting plate respectively.

4. The cooling assembly according to claim 2, characterized in that: The cooling plate is provided with a water nozzle, and the first connecting plate is provided with a first avoidance notch for avoiding the water nozzle; The second connecting plate is provided with a second avoidance gap for avoiding the water nozzle.

5. The cooling assembly according to claim 1, characterized in that The adapter comprises a reinforcement member, and the reinforcement member is respectively connected to the adapter plate and the connecting plate. The adapter portion is provided with a mounting hole, and the mounting hole passes through the adapter portion and is arranged on the reinforcement member.

6. The cooling assembly according to claim 1, characterized in that The cooling plate comprises a main body and mounting parts arranged at both ends of the main body in the length direction X, and the adapter plate is connected to the mounting parts; Along the height direction Z, the height of the mounting portion is smaller than the height of the main body portion, and a connection area between the mounting portion and the main body portion forms a rounded corner.

7. The cooling assembly according to claim 6, characterized in that Along the length direction X of the main body, the minimum distance L between the adapter plate and the main body satisfies: L≥10mm; And / or, along a height direction Z of the mounting portion, a height H1 of the mounting portion and a height H2 of the adapter plate satisfy 1 mm ≤ H1 - H2 ≤ 3 mm.

8. The cooling assembly according to claim 1, characterized in that A glue overflow groove is provided at the bottom of the cooling plate, and the glue overflow groove extends along the length direction X of the cooling plate; And / or, the extension direction of the adapter plate is perpendicular to the length direction X of the cooling plate.

9. The cooling assembly according to any one of claims 1 to 8, characterized in that: The cooling plate comprises a flow channel region, the flow channel region is provided with a flow channel, and an end of the cooling plate has an opening connected to the flow channel; A blocking piece is provided between the adapter and the cooling plate, and the blocking piece is connected to the cooling plate and is used for blocking the opening.

10. The cooling assembly according to claim 9, characterized in that The blocking member comprises a blocking portion and a widening portion, wherein the end surface of the blocking portion facing the opening cooperates with the opening to block the opening; The blocking portion and the widened portion have a smooth transition, and / or, along the height direction Z of the cooling plate, the height H3 of the widened portion and the height H4 of the blocking portion satisfy the following condition: 2mm≤H3-H4≤5mm.

11. The cooling assembly according to claim 1, characterized in that An isolation groove is provided on a side of the adapter plate facing away from the connecting plate.

12. The cooling assembly according to claim 8, characterized in that A flange is provided on the inner wall of at least one of the first connecting plate and the second connecting plate, and the flange is at least partially aligned with the glue overflow groove.

13. The cooling assembly according to claim 3, characterized in that A clamping groove is provided on the outer wall of at least one of the first connecting plate, the second connecting plate, the first rib plate and the second rib plate.

14. A battery pack, characterized in that: A cooling assembly comprising any one of claims 1 to 13.

15. A vehicle, characterized in that: A battery pack comprising the battery pack of claim 14.

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