Cold plate assembly, battery pack and electric equipment

Abstract

The utility model relates to a cold plate assembly, a battery pack and electric equipment, and relates to the technical field of power batteries. The cold plate assembly is connected with the seat support and comprises a cold plate and a connecting assembly, and a protruding structure is arranged on the side, away from the seat support, of the cold plate. The connecting assembly is used for connecting the cold plate and the seat support. Wherein the first end of the connecting assembly is connected to the seat support, and the second end of the connecting assembly is arranged on the cold plate in a penetrating mode; the protruding structure is connected with the cold plate in a sealed mode, the protruding structure is provided with at least one sealing cavity, and the second end of the connecting assembly is sealed in the sealing cavity. According to the cold plate assembly provided by the invention, the connection between the aluminum profile cold plate and the steel seat bracket can be realized while the sealing effect in the battery pack is ensured, namely the problem of connection between the hollow thick aluminum plate and the thin steel plate is solved.

Description

Technical Field

[0001] The present application relates to the technical field of power batteries, and specifically, to a cold plate assembly, a battery pack, and an electrical device. Background Art

[0002] In the prior art, the degree of integration between the battery pack and the vehicle is getting higher and higher. The existing mainstream integration scheme usually directly integrates the battery pack at the bottom of the seat bracket to further achieve a highly integrated design. When applied to the inverted design scheme of the battery pack, the profile cold plate for cooling the battery cells needs to be directly connected to the seat bracket.

[0003] In the prior art, since the cold plate is usually arranged in an aluminum profile structure, while the seat bracket is usually made of steel, it is difficult to directly weld and connect the two. Moreover, flow channels are arranged in the cold plate. When using steel-aluminum sheet splicing or riveting, not only is the processing difficult, but also the sealing failure problem in the battery pack is likely to occur.

[0004] Therefore, there is an urgent need for a connection structure between the cold plate and the seat bracket, which can realize the connection between the aluminum profile cold plate and the steel seat bracket while ensuring the sealing effect in the battery pack, that is, the connection between the hollow thick aluminum plate and the thin steel plate. Summary of the Utility Model

[0005] The purpose of the present application is to provide a cold plate assembly, a battery pack, and an electrical device, which can realize the connection between the aluminum profile cold plate and the steel seat bracket while ensuring the sealing effect in the battery pack, that is, solve the connection problem between the hollow thick aluminum plate and the thin steel plate.

[0006] To achieve the above purpose, according to the first aspect of the present application, an embodiment of the present application provides a cold plate assembly. The cold plate assembly is connected to the seat bracket. The cold plate assembly includes a cold plate and a connection component. A convex structure is arranged on the side of the cold plate facing away from the seat bracket. The connection component is used to connect the cold plate and the seat bracket. Among them, the first end of the connection component is connected to the seat bracket, and the second end of the connection component penetrates through the cold plate. The convex structure is hermetically connected to the cold plate. The convex structure has at least one sealing cavity, and the second end of the connection component is enclosed in the sealing cavity.

[0007] Based on the above embodiment of the present application, when connecting the cold plate and the seat bracket, the two are fixedly connected through the connection component. The connection component can be set as components such as bolts or rivets. By setting the convex structure to form a sealing cavity, the sealing cavity is independent of the cavity inside the battery pack, so that the second end of the connection component can be enclosed in the sealing cavity to realize isolation from the cavity inside the battery pack. Thus, it can not only realize the connection between the aluminum profile cold plate and the steel seat bracket, but also reduce the risk of sealing failure inside the battery pack.

[0008] In some embodiments, the connecting component is set as a bolt, and a connecting nut is arranged on the cold plate. The bolt passes through the seat bracket and is threadedly connected with the connecting nut, and the end of the bolt extends into the sealing cavity. Alternatively, the connecting component is set as a rivet, and a riveted connection is arranged between the cold plate and the seat bracket, and the end of the rivet extends into the sealing cavity.

[0009] Based on the above embodiments of the present application, the cold plate and the seat bracket can be connected by bolts or by riveting, as long as it is ensured that the end of the bolt or rivet can be sealed into the sealing cavity.

[0010] In some embodiments, the connecting component is set as a bolt, a connecting nut is arranged on the cold plate, a countersunk hole is formed on the cold plate, the connecting nut is embedded in the countersunk hole, and a stepped surface is formed at one end of the countersunk hole.

[0011] Based on the above embodiments of the present application, when the cold plate and the seat bracket are connected by bolts, the connecting nut is fixed by forming a countersunk hole on the cold plate, so as to realize the bolt connection between the cold plate and the seat bracket.

[0012] In some embodiments, the connecting nut includes a threaded connecting portion and a flange connecting portion. The threaded connecting portion is fixedly connected with the flange connecting portion, and the flange connecting portion abuts against the stepped surface.

[0013] Based on the above embodiments of the present application, by providing the flange connecting portion, the connection area between the connecting nut and the cold plate is increased. On the one hand, the connection is made more stable, and on the other hand, the pressure at the connection position between the cold plate and the connecting nut is reduced, thereby reducing the possibility of damage to the cold plate.

[0014] In some embodiments, a sealing glue layer is arranged between the flange connecting portion and the stepped surface.

[0015] Based on the above embodiments of the present application, by arranging a sealing glue layer between the flange connecting portion and the stepped surface, on the one hand, the sealing effect can be further improved, and on the other hand, the connection effect between the flange connecting portion and the cold plate can be enhanced.

[0016] In some embodiments, the cold plate assembly further includes a frame body, the convex structure is set as a hollow structure, and both ends of the convex structure are fixedly connected with the frame body.

[0017] Based on the above embodiments of the present application, by setting the convex structure as hollow and fixedly connecting both ends of the convex structure with the frame body, for example, by welding or other means, a sealing cavity can be formed in the convex structure at this time, so as to realize the sealing of the end of the connecting component.

[0018] In some embodiments, a partition is arranged in the convex structure.

[0019] Based on the above embodiments of the present application, the sealing effect inside the convex structure can be further improved by setting partitions.

[0020] In some embodiments, at least one heat insulation plate is provided between the cold plate and the seat bracket.

[0021] Based on the above embodiments of the present application, by setting the heat insulation plate, the heat exchange between the cold plate and the seat bracket is reduced, the heat preservation ability of the cold plate is improved, and the heat dissipation effect of the cold plate is prevented from being affected.

[0022] According to the second aspect of the present application, a battery pack is provided, and the battery pack includes the above cold plate assembly.

[0023] The battery pack provided by the present application also has the above beneficial effects. To avoid repetition, it will not be elaborated here.

[0024] According to the third aspect of the present application, an electrical device is provided, and the electrical device includes the above battery pack.

[0025] The electrical device provided by the present application also has the above beneficial effects. To avoid repetition, it will not be elaborated here.

[0026] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings are used to provide a further understanding of the present application, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present application, but do not constitute a limitation to the present application. In the drawings:

[0028] Figure 1 is a schematic structural diagram of the cold plate assembly provided by the embodiment of the present application.

[0029] Figure 2 is an exploded schematic diagram of the cold plate assembly provided by the embodiment of the present application.

[0030] Figure 3 is a schematic structural diagram of the cold plate and the convex structure in the cold plate assembly provided by the embodiment of the present application.

[0031] Figure 4 is a schematic cross-sectional view of the cold plate and the convex structure in the cold plate assembly provided by the embodiment of the present application.

[0032] Figure 5 is Figure 4 an enlarged schematic diagram of part A in

[0033] Figure 6 is a schematic cross-sectional view of the cold plate assembly provided by the embodiment of the present application.

[0034] DESCRIPTION OF THE REFERENCE NUMERALS

[0035] 1. Cold plate; 11. Countersunk hole; 12. Step surface; 13. Sub-cold plate; 14. Flow channel; 2. Protrusion structure; 21. Sealing cavity; 22. Protrusion beam; 3. Seat bracket; 4. Connection assembly; 41. Bolt; 42. Connection nut; 421. Threaded connection part; 422. Flange connection part; 6. Frame; 7. Heat insulation plate; 8. Bottom guard plate. Detailed implementation manners

[0036] In order to make the objectives, technical solutions and advantages of the present application clearer and more understandable, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the detailed description of the embodiments of the present application provided in the accompanying drawings below is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0039] It should be noted that: similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0040] In the description of the present application, it should be noted that, unless otherwise stated, the orientation or positional relationship indicated by terms such as "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the product of this application is normally placed. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present application, it should also be noted that unless otherwise clearly specified and defined, the terms "arrangement" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0042] In the prior art, the degree of integration between the battery pack and the whole vehicle is getting higher and higher. The existing mainstream integration solutions usually directly integrate the battery pack at the bottom of the seat bracket to further achieve a high-integration design. When applied to the battery pack inverted design solution, it is necessary to directly connect the profile cold plate for the heat dissipation of the battery cells to the seat bracket. The seat and the cooling plate usually adopt different materials, resulting in that the cooling plate and the seat cannot be directly welded and connected. And fluid channels are arranged in the cooling plate. When using steel-aluminum plates for splicing or riveting, not only the processing difficulty is great, but also the sealing failure problem inside the battery pack is likely to occur, thus affecting the thermal management inside the battery pack.

[0043] To solve the above problems, the embodiments of the present application provide an electrical device using a battery pack as a power source. The electrical device can be, but is not limited to, a mobile phone, a tablet computer, a laptop computer, an electric toy, an electric tool, a battery car, an electric vehicle, a ship, a spacecraft, etc. Among them, the electric toy can include a fixed or mobile electric toy, for example, a game console, an electric vehicle toy, an electric ship toy, an electric aircraft toy, etc., and the spacecraft can include an airplane, a rocket, a space shuttle, a spaceship, etc.

[0044] Reference Figures 1 to 6 As shown in, the embodiments of the present application provide a cold plate assembly. The cold plate assembly is connected to the seat bracket 3. The cold plate assembly includes a cold plate 1 and a connection component 4. A convex structure 2 is arranged on the side of the cold plate 1 facing away from the seat bracket 3. The connection component 4 is used to connect the cold plate 1 and the seat bracket 3. Among them, the first end of the connection component 4 is connected to the seat bracket 3, and the second end of the connection component 4 passes through the cold plate 1. The convex structure 2 is hermetically connected to the cold plate 1, and the convex structure 2 has at least one sealing cavity 21, and the second end of the connection component 4 is closed in the sealing cavity 21.

[0045] Based on the above embodiments of the present application, when the cold plate 1 is connected to the seat bracket 3, the connection assembly 4 is used to fixedly connect the two. The connection assembly 4 can be set as components such as bolts 41 or rivets. By setting the convex structure 2, a sealing cavity 21 is formed. The sealing cavity 21 is independent of the cavity inside the battery pack, so that the second end of the connection assembly 4 can be enclosed in the sealing cavity 21, realizing isolation from the cavity inside the battery pack. Thus, it can not only realize the connection between the aluminum profile cold plate 1 and the steel seat bracket 3, but also reduce the risk of sealing failure inside the battery pack.

[0046] Specifically, in the present application, the convex structure 2 can be set in any suitable way. In an exemplary embodiment provided by the present application, referring to Figure 3 and Figure 4 as shown, the convex structure 2 can be set as a convex beam 22. At this time, the convex beam 22 extends along the transverse or longitudinal direction of the cold plate 1, and one or more sealing cavities 21 can be formed inside the convex beam 22 in the thickness direction of the cold plate 1. When multiple sealing cavities 21 are formed inside the convex beam 22, the sealing cavity 21 close to the cold plate 1 can be used to enclose the second end of the connection assembly 4, and the cavity of the sealing cavity 21 facing away from the cold plate 1 can be used to enclose other structures for connecting components such as battery cells, thereby further improving the overall sealing effect of the battery pack.

[0047] Furthermore, when the convex structure 2 is set as the convex beam 22, the same convex beam 22 can be used to seal the ends of multiple connection assemblies 4. For example, when the convex beam 22 extends along the longitudinal direction of the cold plate 1, in order to fix the seat bracket 3, multiple connection assemblies 4 can be arranged in a straight line along the longitudinal direction of the cold plate 1, and the ends of the multiple connection assemblies 4 all extend into the sealing cavity 21 formed by the same convex beam 22 for sealing. Similarly, when the convex beam 22 extends along the transverse direction of the cold plate 1, it can also seal the ends of multiple connection assemblies 4.

[0048] In addition, in some other embodiments of the present application, the convex structure 2 can also be set as a convex bump. At this time, a sealing cavity 21 can be separately formed inside each convex bump to seal the second end of the connection assembly 4. The convex bump can be set in various structures including an arc shape, and the size and setting position of the convex bump can be selected according to the size and position of the connection assembly 4 in a suitable setting way.

[0049] Furthermore, when the convex structure 2 is set as the convex beam 22, the convex beam 22 can replace the installation beam of the battery pack at this time, that is, the convex beam 22 and the frame 6 of the battery pack cooperate to enclose the installation area of the battery cells. At this time, it not only realizes the enclosure of the connection assembly 4, but also can save the step of setting the installation beam again, simplifying the production and assembly process of the battery pack.

[0050] Among them, as shown in reference Figure 3 and Figure 4 When the convex structure 2 is set as the convex beam 22 to replace the mounting beam, at least two sealing cavities 21 can be formed in the convex beam 22 in the thickness direction of the cold plate 1. The sealing cavity 21 close to the cold plate 1 is used to seal the second end of the connecting component 4, and the sealing cavity 21 facing away from the cold plate 1 can be used to seal the connecting bolts 41 or rivets and other structures between the convex beam 22 and the bottom guard plate 8 and other components.

[0051] In addition, it should be noted that in the embodiments of the present application, any suitable connection method can be selected between the convex structure 2 and the cold plate 1. For example, the convex structure 2 and the cold plate 1 can be integrally arranged, and in the specific processing, methods such as die pressing can be used for processing. Or the convex structure 2 and the cold plate 1 can be processed separately and then fixed by welding or other methods, which can be specifically selected according to actual process requirements and the like.

[0052] As shown in reference Figure 3 In some embodiments provided by the present application, the cold plate 1 can include a plurality of sub-cold plates 13, and the plurality of sub-cold plates 13 are spliced in sequence and fixedly connected by friction stir welding or other methods. When the convex structure 2 is set as the convex beam 22, the structure and position of the convex beam 22 can be set according to the installation area of the battery cell first, and then the connecting component 4 is set at the corresponding position on the cold plate 1 to connect the cold plate 1 with the seat bracket 3. At this time, in order to ensure the sealing effect of the sealing cavity 21, the convex beam 22 can be arranged on the same sub-cold plate 13 along the entire length direction.

[0053] When the convex structure 2 is set as a convex bump, the connecting component 4 can be set according to the projection area of the seat bracket 3 on the cold plate 1, and an appropriate number of connecting components 4 are set in the projection area of the seat bracket 3 on the cold plate 1 for connection, so as to ensure the connection effect and avoid excessive setting of the connecting component 4 from affecting the strength of the cold plate 1.

[0054] In addition, it should be noted that a flow channel 14 is formed in the cold plate 1, and ribs are formed between the flow channels 14. When the cold plate 1 is connected to the seat bracket 3, in order to protect the flow channel 14 in the cold plate 1 and ensure the strength of the connection part of the connecting component 4, the convex structure 2 can be set at the corresponding position of the rib in the cold plate 1, and when connecting, the connecting component 4 penetrates through the rib and extends into the sealing cavity 21. In the specific processing process, the size of the connecting component 4 can be selected according to the thickness of the rib, so as to reduce the weakening of the strength of the rib while realizing the connection.

[0055] In the present application, the connecting component 4 can be set as any suitable connection structure. In an exemplary embodiment provided by the present application, as shown in reference Figure 4 andFigure 5 As shown in the figure, the connecting component 4 can be set as a bolt 41, and a connecting nut 42 can be arranged on the cold plate 1. The bolt 41 passes through the seat bracket 3 and is threadedly connected with the connecting nut 42, and the end of the bolt 41 extends into the sealing cavity 21.

[0056] Based on the above embodiments of the present application, the connection and fixation between the cold plate 1 and the seat bracket 3 are realized by the connection method of the bolt 41. While ensuring the connection strength, the connection process is simple and convenient, and it is also convenient for later disassembly and maintenance. At the same time, the bolt 41 can either be separately arranged and respectively penetrate and fix the cold plate 1 and the seat bracket 3, or the bolt 41 can be integrally arranged with the seat bracket 3 and then connected with the connecting nut 42 fixed on the cold plate 1, and it can be specifically set according to the processing requirements.

[0057] Specifically, in the present application, the connecting nut 42 can be set as a sealing connecting nut, so as to further reduce the influence of connection structures such as the connecting nut 42 on the internal sealing effect of the battery pack. Further, when necessary, sealant can also be filled in the connection section between the connecting nut 42 and the cold plate 1 to further enhance the sealing effect, and it can be specifically selected according to the actual sealing requirements in production and assembly.

[0058] In addition, in some other embodiments of the present application, the connecting component 4 can also be set as a rivet. At this time, the cold plate 1 and the seat bracket 3 are riveted, and the end of the rivet extends into the sealing cavity 21 to achieve sealing.

[0059] Reference Figure 4 and Figure 5 As shown in the figure, in some embodiments of the present application, when the connecting component 4 is set as the bolt 41, a countersunk hole 11 can be opened on the cold plate 1, the connecting nut 42 can be embedded in the countersunk hole 11, and a step surface 12 is formed at one end of the countersunk hole 11.

[0060] Based on the above embodiments of the present application, by setting the countersunk hole 11 to fix the connecting nut 42, the connection between the cold plate 1 and the seat bracket 3 is more stable when the bolt 41 is connected.

[0061] Further, as shown in the figure Figure 5 The connecting nut 42 can include a threaded connection portion 421 and a flange connection portion 422. The threaded connection portion 421 is fixedly connected with the flange connection portion 422, and the flange connection portion 422 abuts against the step surface 12.

[0062] Based on the above embodiments of the present application, by providing the flange connection portion 422, the contact area between the connecting nut 42 and the cold plate 1 can be increased. At the same time, since the connecting nut 42 needs to be embedded in the cold plate 1 and an axial force will be applied to the connecting nut 42 when the cold plate 1 is connected to the seat bracket 3, by providing the flange connection portion 422 to abut against the step surface 12, the resistance of the connecting nut 42 to the axial force can be enhanced, thereby making the connection structure between the connecting nut 42 and the cold plate 1 more stable. Specifically, the sizes of the countersunk hole 11 and the flange connection portion 422 can be set according to the actual connection strength requirements.

[0063] In some other embodiments of the present application, the connecting nut 42 can also be set to other suitable structures, and the present application does not make specific limitations thereto.

[0064] Furthermore, in some embodiments of the present application, a sealant layer can also be provided between the flange connection portion 422 and the step surface 12.

[0065] Based on the above embodiments of the present application, by providing a sealant layer between the flange connection portion 422 and the step surface 12, the sealing effect between the connecting nut 42 and the cold plate 1 can be further improved through the setting of the sealant layer. At the same time, the connection stability between the connecting nut 42 and the cold plate 1 can also be enhanced by utilizing the adhesive effect of the sealant layer itself.

[0066] In the present application, the specific formation method of the sealing cavity 21 can be selected in any suitable setting method. Referring to Figure 1 and Figure 2 as shown, in an exemplary embodiment provided by the present application, the cold plate assembly can further include a frame body 6. The protruding structure 2 is provided as a hollow structure, and both ends of the protruding structure 2 are fixedly connected to the frame body 6.

[0067] Based on the above embodiments of the present application, by providing the protruding structure 2 as a hollow structure, for example, when the protruding structure 2 is provided as a protruding beam 22 to replace the installation beam of the battery pack, at this time, the protruding beam 22 is provided as a hollow tubular structure. Subsequently, during the assembly process of the battery pack, both ends of the protruding beam 22 are fixedly connected to the inner wall of the frame body 6 by welding, thereby realizing the enclosure of the protruding beam 22 to form the sealing cavity 21, and at the same time of welding the protruding beam 22 to the inner wall of the frame body 6, the separation and shaping of the battery cell installation area are also realized.

[0068] Specifically, in the prior art, the installation beam itself needs to be welded to the frame body 6 during connection. In the present application, the protruding beam 22 is used to replace the installation beam, and at the same time, the effects of separating the battery cell installation area and sealing the end of the connection assembly 4 are realized. By welding the end of the protruding beam 22 to the inner wall of the frame body 6, that is, through one welding step, the separation setting of the battery cell installation area and the formation of the sealing cavity 21 are simultaneously realized, thereby simplifying the assembly process.

[0069] Reference Figure 2 and Figure 3 As shown in [reference], when the convex structure 2 is set as the convex beam 22 to replace the original battery pack mounting beam, other mounting beams can be separately provided for the battery pack at this time. For example, when the convex beam 22 is longitudinally arranged along the cold plate 1 to replace the longitudinal beam, a cross beam can be separately provided in the battery pack at this time. The cross beam and the longitudinal direction can be perpendicularly arranged to each other, and a clamping groove is provided at the intersection position between the cross beam and the convex beam 22 for clamping connection. At the same time, at the intersection position between the cross beam and the convex beam 22, it is also necessary to be further fixed by means of welding or gluing, etc., so as to avoid damaging the sealing effect of the sealing cavity 21 while enhancing the connection effect.

[0070] Similarly, when the convex beam 22 is transversely arranged along the cold plate 1 to replace the cross beam, a longitudinal beam can be separately provided in the battery pack, and the longitudinal beam and the convex beam 22 are clamped and welded for fixation.

[0071] In addition, in some other embodiments of the present application, a partition can be provided in the convex structure 2. By setting the partition, on the one hand, the sealing effect of the sealing cavity 21 formed in the convex beam 22 can be further improved, and at the same time, the partition itself can play a role equivalent to that of a reinforcing rib, and can support and strengthen the strength of the convex beam 22 itself when the convex beam 22 is used as a mounting beam, thereby further enhancing the strength and stability of the convex structure 2.

[0072] Among them, in specific use, partitions can be formed only at both ends of the hollow convex beam 22, or partitions can be equidistantly arranged in the convex beam 22, or partitions can be provided in the convex beam 22 according to the position of the connection component 4. The convex beam 22 is divided into multiple sealed sub-cavities according to the position where the connection component 4 is located, so as to be able to separately seal the end of each connection component 4, thereby further improving the sealing effect.

[0073] Reference Figure 2 As shown in [reference], in some embodiments provided by the present application, at least one heat insulation plate 7 can be provided between the cold plate 1 and the seat bracket 3.

[0074] Based on the above embodiments of the present application, by providing the heat insulation plate 7, the heat exchange in the direction of the seat bracket 3 of the cold plate 1 can be reduced, thereby improving the heat preservation ability of the cold plate 1 and ensuring that the cold plate 1 has a good cooling effect on components such as the battery cells.

[0075] Specifically, in use, the heat insulation plate 7 can be made of any suitable material, such as resin and other materials, and the good heat insulation effect of the material itself is used to reduce heat exchange.

[0076] Furthermore, in the present application, the number and setting method of the heat insulation plate 7 can be selected in any suitable setting method. ReferenceFigure 2 As shown, the length direction of the heat insulation plate 7 is consistent with the length direction of the sub-cooling plate 13. The projections of a single heat insulation plate 7 in the thickness direction of the cold plate 1 are all located on the same sub-cooling plate 13, and the connecting component 4 passes through the heat insulation plate 7 to fix the heat insulation plate 7.

[0077] In some other embodiments provided by the present application, the length direction of the heat insulation plate 7 can also be set at an angle with the length direction of the sub-cooling plate 13. For example, the length direction of the heat insulation plate 7 is perpendicular to the length direction of the sub-cooling plate 13, and it can be made such that the projections of a single heat insulation plate 7 in the thickness direction of the cold plate 1 are simultaneously located on multiple sub-cooling plates 13, and at least one connecting component 4 on each sub-cooling plate 13 passes through the heat insulation plate 7. At this time, the heat insulation plate 7 can not only reduce the heat exchange effect, but also calibrate and limit the flatness between the respective sub-cooling plates 13.

[0078] Alternatively, in some other embodiments of the present application, the heat insulation plate 7 can also be set as a whole plate structure, and the heat insulation plate 7 simultaneously covers multiple sub-cooling plates 13, and all the connecting components 4 on the sub-cooling plates 13 pass through the heat insulation plate 7. Thus, while achieving heat insulation, the flatness between the respective sub-cooling plates 13 can be further improved.

[0079] In addition, it should also be noted that the technical solution of the above-mentioned cold plate assembly provided by the embodiments of the present application is not limited to the aluminum profile cold plate. For cold plates of other materials or other structures, they can also be adaptively adjusted on the basis of the embodiments of the present application to achieve application.

[0080] In addition, in the present application, the materials of the above-mentioned seat bracket 3 and the connecting component 4 are not limited to materials such as steel. Appropriate materials can be selected according to factors such as the actual connection strength requirements and processing costs. The present application does not make specific limitations in this regard.

[0081] The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present application, various simple modifications can be made to the technical solution of the present application, and these simple modifications all belong to the protection scope of the present application.

[0082] In addition, it should be noted that, in the case of no contradiction, the various specific technical features described in the above specific embodiments can be combined in any suitable manner. To avoid unnecessary repetition, the present application does not further describe various possible combination methods.

[0083] In addition, any combination can be made between various different embodiments of the present application as long as it does not violate the idea of the present application, and it should also be regarded as the content disclosed by the present application.

Claims

1. A cold plate assembly connected to a seat bracket, characterized in that: The cold plate assembly comprises: A cold plate, wherein a convex structure is provided on a side of the cold plate facing away from the seat support; a connecting assembly, the connecting assembly being used to connect the cold plate and the seat bracket; Wherein, the first end of the connecting component is connected to the seat bracket, and the second end of the connecting component is passed through the cold plate; The protruding structure is sealed and connected to the cold plate. The protruding structure has at least one sealed cavity. The second end of the connecting assembly is sealed in the sealed cavity.

2. The cold plate assembly according to claim 1, characterized in that The connecting assembly is configured as a bolt, the cold plate is provided with a connecting nut, the bolt passes through the seat bracket and is threadedly connected to the connecting nut, and the end of the bolt extends into the sealing cavity; or, The connection assembly is configured as a rivet, the cold plate and the seat bracket are configured as a riveted connection, and the end of the rivet extends into the sealing cavity.

3. The cold plate assembly according to claim 2, characterized in that The connecting assembly is configured as a bolt, a connecting nut is provided on the cold plate, a countersunk hole is provided on the cold plate, the connecting nut is embedded in the countersunk hole, and a step surface is formed at one end of the countersunk hole.

4. The cold plate assembly according to claim 3, characterized in that The connecting nut comprises a threaded connection portion and a flange connection portion, the threaded connection portion is fixedly connected to the flange connection portion, and the flange connection portion abuts against the step surface.

5. The cold plate assembly according to claim 4, characterized in that A sealing rubber layer is arranged between the flange connection portion and the step surface.

6. The cold plate assembly according to claim 1, characterized in that The cold plate assembly further includes a frame, the protruding structure is configured as a hollow structure, and two ends of the protruding structure are fixedly connected to the frame.

7. The cold plate assembly according to claim 6, characterized in that A partition is arranged inside the raised structure.

8. The cold plate assembly according to claim 1, characterized in that At least one heat insulation plate is arranged between the cold plate and the seat support.

9. A battery pack, characterized in that: The battery pack includes the cold plate assembly according to any one of claims 1-8.

10. An electrical device, characterized in that: The electric device comprises the battery pack as claimed in claim 9.

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