Cold plate assembly and electric equipment

Abstract

The utility model relates to a cold plate assembly and electric equipment, and relates to the technical field of battery packs. The cold plate assembly is connected with the seat support, the cold plate assembly comprises a cold plate structure and at least one connecting block, and the cold plate assembly is provided with at least one connecting hole. The connecting block comprises a limiting part, a connecting part and a protruding part which are mutually connected or integrally arranged, the limiting part is connected with the cold plate structure, the connecting part is arranged in the connecting hole in a penetrating mode, and the protruding part is arranged on the side, away from the limiting part, of the connecting part. The protruding part is located on the side, away from the limiting part, of the cold plate structure, and the protruding part is fixedly connected with the seat support. The cold plate assembly provided by the utility model can solve the problem of connection between the top profile aluminum cold plate and the steel structure seat bracket when the battery cell is inverted, namely the problem of connection between the hollow thick aluminum plate and the thin steel plate.

Description

Technical Field

[0001] The present application relates to the technical field of battery packs, and in particular, to a cold plate assembly and an electrical device. Background Art

[0002] In the prior art, in the battery body integration technology (Cell to Body, CTB) / battery chassis integration technology (Cell to Chassis, CTC) scheme with highly integrated connection between the battery pack and the whole vehicle, by integrating the battery pack into the form of the whole vehicle floor, the battery pack is directly integrated at the bottom of the seat bracket, so as to further achieve a highly integrated design. When the integrated battery pack is in an inverted design, the profile cold plate for cooling the bottom of the battery cells is directly located under the seat bracket in terms of space, so as to connect the battery pack and the seat bracket.

[0003] At the same time, the extrusion profile cold plate of the battery usually uses aluminum as the main material, while the seat bracket is usually made of steel. The problems of electrochemical corrosion between steel and aluminum materials and the brittle intermetallic phase alloy formed after melting make it impossible to directly connect the two metals, that is, it is impossible to directly connect the extrusion profile cold plate and the seat bracket by welding, resulting in the problem of difficult installation of the battery pack. Summary of the Utility Model

[0004] The purpose of the present application is to provide a cold plate assembly and an electrical device, which can solve the connection problem between the top profile aluminum cold plate and the steel structure seat bracket when the battery cells are inverted, that is, the connection problem between the hollow thick aluminum plate and the thin steel plate.

[0005] 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, which is connected to a seat bracket. The cold plate assembly includes a cold plate structure and at least one connecting block, and the cold plate assembly has at least one connecting hole. The connecting block includes a limiting portion, a connecting portion and a protruding portion that are connected to each other or integrally provided. The limiting portion is connected to the cold plate structure, the connecting portion passes through the connecting hole, and the protruding portion is provided on the side of the connecting portion away from the limiting portion. The protruding portion is on the side of the cold plate structure away from the limiting portion, and the protruding portion is fixedly connected to the seat bracket.

[0006] Based on the above embodiments of the present application, when the cold plate structure is connected to the seat bracket, by providing a connection block between the cold plate structure and the seat bracket, wherein the connection portion passes through the connection hole on the cold plate structure, and the limiting portion cooperates with the connection portion to achieve limiting abutment with the cold plate structure. Subsequently, the protruding portion is fixedly connected to the seat. At this time, the protruding portion can be made of the same material as the seat bracket. For example, both can be made of steel. At this time, the seat bracket and the protruding portion can be directly welded. That is, through the setting of the connection block, the connection block passes through and abuts with the cold plate structure, and is directly welded to the seat bracket, thereby quickly and simply realizing the connection between the cold plate structure and the seat bracket.

[0007] In some embodiments, the connection block is made of the same material as the seat bracket, or the connection block is made of a dissimilar metal or high-strength composite material that has no electrochemical corrosion with the seat bracket.

[0008] Based on the above embodiments of the present application, since the connection block is fixed to the cold plate structure by the clamping between the limiting portion and the connection portion and the connection hole, the material of the connection block does not affect its connection with the cold plate structure under the condition of ensuring strength. By imposing the above restrictions on the material of the connection block, it is possible to avoid electrochemical corrosion between the connection block and the seat bracket, which affects the direct connection between the two.

[0009] In some embodiments, a plurality of connection blocks are provided. The ends of the protruding portions of the plurality of connection blocks together form a connection surface. The seat bracket is located on the connection surface and is fixedly connected to the plurality of protruding portions. The protruding portion and the seat bracket are welded at the connection surface, and / or the protruding portion and the seat bracket are bolted.

[0010] Based on the above embodiments of the present application, by providing a plurality of connection blocks, and the protruding portions of the plurality of connection blocks form a connection surface, the connection between the cold plate structure and the seat bracket is made more stable. Specifically, the protruding portion and the seat bracket can be connected by welding or bolting, or further strengthened by bolting while welding.

[0011] In some embodiments, an embedding groove is provided on the cold plate structure, the connection hole is opened at the bottom of the embedding groove, and the limiting portion is embedded in the embedding groove.

[0012] Based on the above embodiments of the present application, by providing the embedding groove, the embedding groove and the connection hole cooperate to form a counterbore structure, so that when the limiting portion is embedded in the embedding groove and the connection portion passes through the connection hole, it can achieve abutment and fixation with the cold plate structure.

[0013] In some embodiments, a receiving cavity is provided in the cold plate structure, at least one reinforcing rib is provided in the receiving cavity, and the reinforcing rib divides the receiving cavity into at least one flow channel. The connection hole is opened in the cold plate structure and penetrates the reinforcing rib, and / or the connection hole is opened in the cold plate structure and penetrates the flow channel.

[0014] Based on the above embodiments of the present application, a flow channel and a reinforcing rib are formed in the cold plate structure. When the connection holes are arranged, they can penetrate through the reinforcing rib or the flow channel, thereby expanding the setting range of the connection holes. Furthermore, more connection holes and connection blocks can be arranged in a limited area, enhancing the connection strength between the seat bracket and the cold plate structure.

[0015] In some embodiments, the cold plate structure includes a main body part and a plug block. An embedding hole is formed on the main body part, and the plug block is embedded in the embedding hole. A flow channel is arranged in the main body part, a part of the plug block is located in the flow channel, and the connection hole is arranged on the plug block.

[0016] Based on the above embodiments of the present application, by arranging the plug block, when the connection hole penetrates through the flow channel, first embed the plug block at the position of the flow channel on the main body part, and then form the connection hole on the plug block. The setting of the plug block can play a sealing role, avoiding leakage at the flow channel when the connection block penetrates. At the same time, compared with the thin-wall structure of the main body part, setting the connection hole on the plug block is more convenient for the limiting and fixing of the limiting part, improving the connection stability.

[0017] In some embodiments, the end face of the plug block is flush with the surface of the cold plate structure, and a weld groove is formed at the connection position between the end face of the plug block and the surface of the cold plate structure. The cross-section of the weld groove is wedge-shaped, and the plug block and the cold plate structure are welded at the weld groove.

[0018] Based on the above embodiments of the present application, the two ends of the plug block are welded to the cold plate structure, and on the one hand, the wedge-shaped weld groove makes the welding structure more stable, and on the other hand, it can also enhance the sealing effect between the plug block and the cold plate structure and the flow channel.

[0019] In some embodiments, a first step surface is formed at the intersection of the connection hole and the embedding groove, a second step surface is formed at the intersection of the limiting part and the connecting part, and the second step surface abuts against the first step surface. A sealant layer is arranged between the first step surface and the second step surface. At least one sealing ring is arranged between the connecting part and the inner wall of the connection hole, and a sealing groove is arranged on at least one of the connecting part and the inner wall of the connection hole, and at least part of the sealing ring is arranged in the sealing groove.

[0020] Based on the above embodiments of the present application, by arranging the first step surface and the second step surface, the abutment between the first step surface and the second step surface is used to realize the abutment and fixation between the connection block and the cold plate structure. By arranging the sealant layer between the first step surface and the second step surface, the sealing effect between the connection block and the connection hole can be improved, thereby improving the overall sealing effect of the battery pack. By arranging the sealing ring and the sealing groove between the connecting part and the inner wall of the connection hole, the sealing effect between the connection block and the connection hole is further improved.

[0021] In some embodiments, the end of the limiting portion is flush with the surface of the cold plate structure. A battery cell is disposed on a side of the cold plate structure facing away from the seat bracket, and a structural adhesive is disposed between the cold plate structure and the seat bracket. The structural adhesive covers the embedding groove and the limiting portion.

[0022] Based on the above embodiments of the present application, by setting the limiting portion to be flush with the surface of the cold plate structure, the flatness of the cold plate structure surface is ensured. At the same time, the setting of the structural adhesive can, on the one hand, fixedly connect the battery cell and the cold plate structure, and on the other hand, the sealing layer formed by the structural adhesive can also strengthen the sealing of the connection area between the connecting block and the bottom of the cold plate structure.

[0023] According to a second aspect of the present application, there is provided an electrical device, which includes the above-mentioned cold plate assembly.

[0024] Based on the above embodiments of the present application, the electrical device provided by the present application includes the above-mentioned cold plate assembly, and thus also has the above-mentioned beneficial effects. To avoid repetition, it will not be elaborated here.

[0025] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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:

[0027] Figure 1 is a schematic structural diagram of the cold plate assembly provided by an embodiment of the present application.

[0028] Figure 2 is an exploded schematic diagram of the cold plate assembly provided by an embodiment of the present application.

[0029] Figure 3 is a schematic structural diagram of the sub-cooling plate in the cold plate assembly provided by an embodiment of the present application.

[0030] Figure 4 is a schematic structural diagram of the connecting block in the cold plate assembly provided by an embodiment of the present application.

[0031] Figure 5 is a schematic cross-sectional view of the sub-cooling plate in the cold plate assembly provided by an embodiment of the present application.

[0032] Figure 6 is Figure 5 an enlarged schematic diagram of part A in

[0033] Figure 7 is Figure 5 an enlarged schematic diagram of part B in

[0034] BRIEF DESCRIPTION OF THE REFERENCE NUMERALS

[0035] 1. Seat bracket; 2. Cold plate structure; 21. Connecting hole; 22. Embedded groove; 23. Reinforcing rib; 24. Flow channel; 25. Body part; 26. Plug; 27. First step surface; 28. Sub-cold plate; 3. Connecting block; 31. Limiting part; 32. Connecting part; 33. Protruding part; 34. Second step surface; 4. Sealant layer; 5. Sealing ring; 51. Sealing groove; 6. Weld groove; 7. Frame. Detailed implementation manners

[0036] In order to make the purpose, technical solutions and advantages of the present application clearer, the following further describes the present application in detail with reference to 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 purpose, 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 with reference to 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 herein can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of 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 denote 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 to 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, in the battery body integration technology (Cell to Body, CTB) or the battery chassis integration technology (Cell to Chassis, CTC) where the connection between the battery pack and the vehicle body is highly integrated, the battery pack is directly integrated at the bottom of the seat bracket by integrating the vehicle floor with the battery pack, so as to further achieve a highly integrated design. When implementing the inverted design of the integrated battery pack, the profile cold plate for cooling the bottom of the battery cells is directly located below the seat bracket in space at this time, so as to connect the battery pack and the seat bracket.

[0043] At the same time, the extrusion profile cold plate of the battery usually uses aluminum as the main material, while the seat bracket is usually made of steel. The problems of electrochemical corrosion between steel and aluminum materials and the brittle phase intermediate phase alloy formed after melting prevent them from being directly connected.

[0044] To solve the above problems, an embodiment of the present application provides a cold plate assembly. As shown in Figures 1 to 6 , the cold plate assembly is connected to the seat bracket 1. The cold plate assembly includes a cold plate structure 2 and at least one connection block 3. The cold plate assembly has at least one connection hole 21. The connection block 3 includes a limiting portion 31, a connecting portion 32 and a protruding portion 33 that are connected to each other or integrally arranged. The limiting portion 31 is connected to the cold plate structure 2. The connecting portion 32 passes through the connection hole 21. The protruding portion 33 is arranged on the side of the connecting portion 32 away from the limiting portion 31. The protruding portion 33 is on the side of the cold plate structure 2 away from the limiting portion 31, and the protruding portion 33 is fixedly connected to the seat bracket 1.

[0045] Based on the above-mentioned embodiment of the present application, when the cold plate structure 2 is connected to the seat bracket 1, a connecting block 3 is arranged between the cold plate structure 2 and the seat bracket 1, wherein the connecting portion 32 of the connecting block 3 is inserted into the connecting hole 21 on the cold plate structure 2, and the limiting portion 31 cooperates with the connecting portion 32 to achieve the limiting contact with the cold plate structure 2, and then the protruding portion 33 is fixedly connected to the seat bracket 1. At this time, the protruding portion 33 can be set to the same material as the seat bracket 1, for example, both are set to steel material, and the seat bracket 1 can be directly welded to the protruding portion 33. That is, by setting the connecting block 3, the connecting block 3 is inserted and contacted with the cold plate structure 2, and is directly welded with the seat bracket 1, so that the connection between the cold plate structure 2 and the seat bracket 1 can be quickly and easily achieved.

[0046] Specifically, the structure of the connection hole 21 in the present application can be selected in any suitable setting mode, for example, the connection hole 21 is set to directly penetrate the cold plate structure 2, or the connection hole 21 can be set to be opened in the cold plate structure 2. When the connection hole 21 is set to directly penetrate the cold plate structure 2, the connection block 3 can be directly passed from one side of the cold plate structure 2 to the other side when fixed, and then connected to the seat bracket 1. When the connection hole 21 is set to be opened in the cold plate structure 2, the connection block 3 can be inserted into the connection hole 21 from the side of the cold plate structure 2 toward the seat bracket 1, and then the limiting part 31 is fixed to the cold plate structure 2 by setting a clamping structure, and then the protrusion 33 is fixedly connected to the seat bracket 1. Specifically, any suitable setting mode can be selected according to actual conditions, and the present application does not make specific restrictions on this.

[0047] In addition, it should be noted that the reference Figure 2 and Figure 3 As shown in , the cold plate structure 2 in the present application may include a plurality of sub-cold plates 28 , and the plurality of sub-cold plates 28 are sequentially spliced ​​and fixed to form the cold plate structure 2 .

[0048] When setting the connecting block 3 and the connecting hole 21, they can be set according to the projection area of ​​the seat bracket 1 on the cold plate structure 2. At this time, a connecting hole 21 can be set on each sub-cold plate 28 where the projection area is located, thereby ensuring that each sub-cold plate 28 can be stably connected to the seat bracket 1. Alternatively, the connecting hole 21 can be set on only some of the sub-cold plates 28, and the specific setting can be based on the connection strength requirements.

[0049] In some embodiments of the present application, the connection block 3 can be made of the same material as the seat bracket 1 , or the connection block 3 can be made of a dissimilar metal or a high-strength composite material that is not electrochemically corroded with the seat bracket 1 .

[0050] Based on the above embodiments of the present application, since the connection block 3 is fixed to the cold plate structure 2 through the snap connection between the limiting portion 31 and the connection portion 32 and the connection hole 21, the material of the connection block 3 does not affect its connection with the cold plate structure 2 when the strength is ensured. By imposing the above restrictions on the material of the connection block 3, it is possible to avoid electrochemical corrosion between the connection block 3 and the seat bracket 1, which may affect their direct connection. For example, both the connection block 3 and the seat bracket 1 can be made of steel structures, or the seat bracket 1 can be made of a steel structure while the connection block 3 is made of a high-strength composite material such as carbon fiber.

[0051] Specifically, the limiting portion 31, the connection portion 32, and the protruding portion 33 can be separately provided and connected to each other, or can be integrally provided. When the limiting portion 31, the connection portion 32, and the protruding portion 33 are integrally provided, at this time, the limiting portion 31 and the connection portion 32 are made of the same material as the protruding portion 33, such as a steel structure, and the limiting portion 31 and the connection portion 32 are fixedly connected to the cold plate structure 2 by means of passing through and abutting. Therefore, the material of the limiting portion 31 and the connection portion 32 does not affect their connection effect.

[0052] When the limiting portion 31, the connection portion 32, and the protruding portion 33 are separately provided, the materials of the above three components can also be separately provided. However, considering that the above three components need to be connected in sequence, factors such as ease of connection and their own strength should be considered when selecting the materials.

[0053] In some embodiments of the present application, a plurality of connection blocks 3 are provided. The ends of the protruding portions 33 in the plurality of connection blocks 3 together form a connection surface, and the seat bracket 1 is located on the connection surface and fixedly connected to the plurality of protruding portions 33. The protruding portion 33 and the seat bracket 1 are welded at the connection surface, and / or the protruding portion 33 and the seat bracket 1 are bolted.

[0054] Based on the above embodiments of the present application, by providing a plurality of connection blocks 3 and the protruding portions 33 of the plurality of connection blocks 3 forming a connection surface, the connection between the cold plate structure 2 and the seat bracket 1 is made more stable. Specifically, the protruding portion 33 and the seat bracket 1 can be directly welded, or the protruding portion 33 and the seat bracket 1 can be bolted by providing a threaded counterbore at the end of the protruding portion 33 for connection. Or the protruding portion 33 and the seat bracket 1 can also be further strengthened by bolt connection while being welded.

[0055] Refer to Figures 5 to 7 As shown in [reference], in an embodiment provided by the present application, an embedding groove 22 is provided on the cold plate structure 2, the connection hole 21 is provided at the bottom of the embedding groove 22, and the limiting portion 31 is embedded in the embedding groove 22.

[0056] Based on the above embodiments of the present application, by providing the embedding groove 22, the embedding groove 22 and the connection hole 21 cooperate to form a counterbore structure, so that when the limiting portion 31 is embedded in the embedding groove 22 and the connecting portion 32 passes through the connection hole 21, abutting and fixing with the cold plate structure 2 can be achieved.

[0057] Specifically, when the embedding groove 22 and the connection hole 21 cooperate to form a counterbore structure, after the connecting block 3 is arranged in the counterbore structure on the cold plate structure 2 and is connected to the seat bracket 1, the connection between the connecting block 3 and the cold plate structure 2 is also realized, which not only makes the connection structure more stable, but also makes the connection process simpler and faster.

[0058] In specific use, the embedding groove 22 can be set as a cylindrical structure. At this time, the embedding groove 22 and the connection hole 21 cooperate to form a cylindrical counterbore, or the embedding groove 22 can also be set as a conical structure to cooperate with the connection hole 21 to form a conical counterbore. Specifically, it can be selected according to processing requirements, etc. The present application does not make specific restrictions on this.

[0059] Reference Figures 5 to 7 As shown in, in an embodiment provided by the present application, a receiving cavity is provided in the cold plate structure 2, at least one reinforcing rib 23 is provided in the receiving cavity, and the reinforcing rib 23 divides the receiving cavity into at least one flow channel 24. The connection hole 21 is opened in the cold plate structure 2 and penetrates through the reinforcing rib 23, and / or the connection hole 21 is opened in the cold plate structure 2 and penetrates through the flow channel 24.

[0060] Based on the above embodiments of the present application, a flow channel 24 and a reinforcing rib 23 are formed in the cold plate structure 2. When the connection hole 21 is provided, it can be provided to penetrate through the reinforcing rib 23, or the connection hole 21 can be provided to penetrate through the flow channel 24, or there are both connection holes 21 penetrating through the reinforcing rib 23 and connection holes 21 penetrating through the flow channel 24, so as to expand the setting range of the connection hole 21, and then more connection holes 21 and connection blocks 3 can be provided in a limited area, enhancing the connection strength between the seat bracket 1 and the cold plate structure 2.

[0061] Specifically, by setting more connection holes 21 and connection blocks 3 in the above manner, as the number of connection blocks 3 increases, the overall connection strength between the connection blocks 3 and the seat bracket 1 is improved. At the same time, the force on a single connection block 3 is reduced, making the connection structure more stable and durable.

[0062] Further, when the connecting hole 21 directly penetrates through the reinforcing rib 23, the distance between the edge of the connecting hole 21 and the outer wall of the reinforcing rib 23 is L1, and L1 > 1 mm. This avoids the wall thickness of the reinforcing rib 23 becoming too thin when drilling the connecting hole 21, which in turn affects the strength of the reinforcing rib 23 and the safety of the flow channel 24. During actual processing, it can also be set according to the actual thickness of the reinforcing rib 23. For example, the diameter of the connecting hole 21 can be set between one-third and two-thirds of the thickness of the reinforcing rib 23, and specifically can be set according to the actual strength requirements.

[0063] In addition, in an embodiment provided by the present application, the number of connecting holes 21 can be set to be less than or equal to the number of reinforcing ribs 23 in the width direction of the battery pack, that is, while ensuring that the number of connecting blocks 3 is sufficient, it is avoided that the excessive number of connecting holes 21 and connecting blocks 3 affects the strength of the cold plate structure 2.

[0064] Meanwhile, in an embodiment provided by the present application, in the length direction of the battery pack, the distance between any two adjacent connecting holes 21 is L2, and 30 mm ≤ L2 ≤ 200 mm.

[0065] Based on the above embodiments of the present application, by restricting the distance between any two adjacent connecting holes 21, it is avoided that the local connecting holes 21 on the cold plate structure 2 are too dense, which affects the strength of the cold plate structure 2. During the specific production and processing, the size between the connecting holes 21 can be set according to factors such as the thickness of the cold plate structure 2 and the aperture size of the connecting holes 21. For example, when the thickness of the cold plate structure 2 is large and the aperture of the connecting hole 21 is small, at this time, the strength of the cold plate structure 2 itself is high and the influence of a single connecting hole 21 on the strength of the cold plate structure 2 is small, so the distance between the connecting holes 21 can be set smaller. On the contrary, when the thickness of the cold plate structure 2 itself is small or the aperture of the connecting hole 21 is large, the distance between the connecting holes 21 can be set larger.

[0066] Further, referring to Figure 6 and Figure 7 As shown in, in an embodiment provided by the present application, the limiting portion 31, the connecting portion 32, and the protruding portion 33 can be set to any suitable shape. Among them, when the limiting portion 31, the connecting portion 32, and the protruding portion 33 are all set to a cylindrical structure, the diameter of the protruding portion 33 is φ1, and φ1 ≥ 3 mm.

[0067] Based on the above embodiments of the present application, by restricting the diameter of the protruding portion 33, the connection area between the connecting block 3 and the seat bracket 1 is ensured, and the connection strength is improved. At the same time, by expanding the area of the protruding portion 33, the pressure between the protruding portion 33 and the seat bracket 1 is reduced.

[0068] Referring to Figure 5 and Figure 6As shown in [reference], in an embodiment provided by the present application, the cold plate structure 2 includes a body portion 25 and a plug 26. An embedding hole is formed on the body portion 25, and the plug 26 is embedded in the embedding hole. A flow channel 24 is arranged inside the body portion 25. A part of the plug 26 is located inside the flow channel 24, and a connection hole 21 is formed on the plug 26.

[0069] Based on the above embodiments of the present application, by providing the plug 26, when the connection hole 21 penetrates the flow channel 24, first embed the plug 26 at the position of the flow channel 24 on the body portion 25, and then form the connection hole 21 on the plug 26. The setting of the plug 26 can play a sealing role to prevent leakage at the flow channel 24 when the connecting block 3 penetrates. At the same time, compared with the thin-wall structure of the body portion 25, setting the connection hole 21 on the plug 26 is more convenient for the positioning and fixing of the positioning portion 31, improving the stability of the connection.

[0070] Specifically, in order to reduce the influence of the plug 26 on the flow channel 24, in an embodiment provided by the present application, it is necessary to limit the size of the plug 26. For example, when the plug 26 is set as a cylindrical structure, the diameter of the plug 26 is φ2, and the cross-sectional dimension of the flow channel 24 in the width direction is L3, and φ2 ≤ 1 / 3L3. By limiting the size of the plug 26, the influence of the plug 26 on the flow of the coolant in the flow channel 24 is reduced, and the influence on the cooling effect of the cold plate structure 2 is reduced.

[0071] Reference Figure 6 As shown in [reference], in an embodiment provided by the present application, the end face of the plug 26 is flush with the surface of the cold plate structure 2, and a weld groove 6 may be formed at the connection position between the end face of the plug 26 and the surface of the cold plate structure 2. The cross-section of the weld groove 6 is set as a wedge shape, and the plug 26 and the cold plate structure 2 are welded at the weld groove 6.

[0072] Based on the above embodiments of the present application, by welding both end faces of the plug 26 to the cold plate structure 2, the fixing between the plug 26 and the cold plate structure 2 is realized. At the same time, the setting of the wedge-shaped weld groove 6 makes the strength of the welding structure position higher on the one hand, and on the other hand, it is convenient to grind the welding position after welding, making the welding position smoother, facilitating the subsequent assembly between the cold plate structure 2 and components such as the battery cell.

[0073] Specifically, when the weld groove 6 is formed, a wedge-shaped weld groove 6 can be formed by chamfering the connection positions of the plug 26 and the body portion 25 respectively, which is convenient for processing. In addition, the weld groove 6 can also be set to any other suitable shape, for example, the cross-section of the weld groove 6 is set as an arc shape, etc., and it can be specifically set according to the actual processing technology. The present application does not make specific limitations on this.

[0074] Further, in order to facilitate the direct welding of the plug block 26 to the cold plate structure 2, the plug block 26 can be made of the same material as the cold plate structure 2 during the specific processing. In actual use, a variety of materials including copper and aluminum alloy can be selected according to the material requirements of the cold plate structure 2.

[0075] Refer to Figure 6 and Figure 7 As shown in, in an embodiment of the present application, a first step surface 27 is formed at the intersection of the connection hole 21 and the embedding groove 22, and a second step surface 34 is formed at the intersection of the limiting portion 31 and the connecting portion 32. The second step surface 34 abuts against the first step surface 27.

[0076] Based on the above embodiments of the present application, the connection block 3 is clamped with the cold plate structure 2 in the connection hole 21 through the abutment of the first step surface 27 and the second step surface 34.

[0077] Among them, to ensure the stable clamping of the second step surface 34 and the first step surface 27, the structure of the second step surface 34 can be adapted to the structure of the first step surface 27. For example, when the embedding groove 22 is set as a cylindrical structure, at this time the first step surface 27 is formed as an arc surface, and the second step surface 34 can be formed as an arc surface accordingly. When the embedding groove 22 is set as a conical structure, at this time the first step surface 27 is formed as a circumferential surface, and the second step surface 34 can be formed as a circumferential surface accordingly.

[0078] Further, to enhance the sealing effect between the connection block 3 and the connection hole 21, refer to Figures 4 to 7 As shown in, in an embodiment of the present application, a sealing glue layer 4 can also be provided between the first step surface 27 and the second step surface 34.

[0079] Based on the above embodiments of the present application, by providing the sealing glue layer 4, on the one hand, it can enhance the sealing effect between the connection block 3 and the connection hole 21, and on the other hand, it can also eliminate the manufacturing and assembly tolerances of the above structure, making the assembled connection structure more stable and precise. In actual use, the sealing glue layer 4 can be selected as a sticky material, so as to further enhance the connection strength between the connection block 3 and the cold plate structure 2.

[0080] Refer to Figures 4 to 7 As shown in, in an embodiment of the present application, at least one sealing ring 5 is provided between the connecting portion 32 and the inner wall of the connection hole 21.

[0081] Based on the above embodiments of the present application, the sealing effect between the connection hole 21 and the connection block 3 is enhanced by providing the sealing ring 5. In actual use, the sealing ring 5 can be made of a variety of materials including rubber, and at the same time, the number of the sealing rings 5 can also be set to be multiple. The present application does not make specific limitations on this.

[0082] In addition, in order to further improve the sealing effect and facilitate the fixing of the sealing ring 5 , in the present application, at least one of the connecting portion 32 and the inner wall of the connecting hole 21 is provided with a sealing groove 51 , and the sealing ring 5 is at least partially disposed in the sealing groove 51 .

[0083] Based on the above-mentioned embodiments of the present application, the sealing groove 51 can be set only on the inner wall of the connecting hole 21. In this case, the sealing ring 5 is partially set in the sealing groove 51, and the sealing ring 5 is compressed at the contact position between the inner wall of the connecting hole 21 and the connecting part 32, while increasing the degree of tortuosity of the contact position between the connecting hole 21 and the connecting part 32, and further improving the sealing effect by mutual extrusion between the sealing groove 51 and the sealing ring 5. Alternatively, the sealing groove 51 can be set only on the connecting part 32, and the sealing ring 5 is also partially set in the sealing groove 51, thereby improving the sealing effect. Alternatively, the sealing groove 51 can be set on both the connecting part 32 and the inner wall of the connecting hole 21 at the same time. In this case, the sealing grooves 51 at the two places are correspondingly set to form a circular groove structure, which can enclose the sealing ring 5 as a whole in the sealing groove 51. In specific use, the size of the sealing ring 5 should be slightly larger than the size of the sealing groove 51, thereby further improving the sealing effect.

[0084] Furthermore, in some embodiments of the present application, the end of the limiting portion 31 is flush with the surface of the cold plate structure 2. A battery cell is arranged on the side of the cold plate structure 2 facing away from the seat bracket 1, and a structural adhesive is arranged between the cold plate structure 2 and the seat bracket 1, and the structural adhesive covers the embedding groove 22 and the limiting portion 31.

[0085] Based on the above-mentioned embodiment of the present application, the limit portion 31 is set flush with the surface of the cold plate structure 2, thereby ensuring the flatness of the surface of the cold plate structure 2. At the same time, the setting of the structural adhesive can, on the one hand, fix the connection between the battery cell and the cold plate structure 2, and on the other hand, the sealing layer formed by the structural adhesive can also strengthen the sealing of the connection area between the connection block 3 and the bottom of the cold plate structure 2.

[0086] On the basis of the above technical solution, the present application also provides an electrical device, which includes the above cold plate assembly. The electrical device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. The electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0087] The electrical equipment provided in the present application also includes the beneficial effects of the above-mentioned cold plate assembly, which will not be described again here to avoid repetition.

[0088] Specifically, when the above cold plate assembly is actually applied to an electrical device, it can be applied to the electrical device by being grouped with components such as the frame 7 and the battery cell to form a battery pack. In specific use, the specific structures of the components such as the frame 7 and the battery cell and the specific connection manner with the cold plate assembly can be set in any suitable way. Since the present application does not involve the improvement of the above components, no specific limitation is made.

[0089] 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 technical concept of the present application, various simple modifications can be made to the technical solutions of the present application, and these simple modifications all fall within the protection scope of the present application.

[0090] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable way without conflict. To avoid unnecessary repetition, the present application does not further explain various possible combination methods.

[0091] 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 in 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 structure having at least one connection hole; At least one connecting block, comprising a limiting portion, a connecting portion and a protruding portion connected to each other or integrally arranged, the limiting portion is connected to the cold plate structure, the connecting portion is passed through the connecting hole, and the protruding portion is arranged on a side of the connecting portion away from the limiting portion; The protruding portion is located at a side of the cold plate structure away from the limiting portion, and the protruding portion is fixedly connected to the seat bracket.

2. The cold plate assembly according to claim 1, characterized in that The connection block is made of the same material as the seat bracket, or the connection block is made of a dissimilar metal or a high-strength composite material that is free from electrochemical corrosion with the seat bracket.

3. The cold plate assembly according to claim 1, characterized in that The connecting blocks are provided in plurality, and the ends of the protrusions in the plurality of connecting blocks together form a connecting surface, and the seat bracket is located on the connecting surface and fixedly connected to the plurality of protrusions; The protrusion is connected to the seat bracket by welding at the connection surface, and / or the protrusion is connected to the seat bracket by bolts.

4. The cold plate assembly according to claim 1, characterized in that An embedding groove is provided on the cold plate structure, the connecting hole is provided at the bottom of the embedding groove, and the limiting portion is embedded in the embedding groove.

5. The cold plate assembly according to claim 1, characterized in that The cold plate structure is provided with a receiving cavity, the receiving cavity is provided with at least one reinforcing rib, and the reinforcing rib separates the receiving cavity into at least one flow channel; The connection hole is opened in the cold plate structure and passes through the reinforcing rib, and / or the connection hole is opened in the cold plate structure and passes through the flow channel.

6. The cold plate assembly according to claim 5, characterized in that The cold plate structure comprises a main body and a blocking block, the main body is provided with an embedding hole, and the blocking block is embedded in the embedding hole; The flow channel is arranged in the main body, the blocking block is partially located in the flow channel, and the connecting hole is opened in the blocking block.

7. The cold plate assembly according to claim 6, characterized in that The end face of the blocking block is flush with the surface of the cold plate structure, and a weld groove is formed at the connection position between the end face of the blocking block and the surface of the cold plate structure. The cross section of the weld groove is set to be wedge-shaped, and the blocking block and the cold plate structure are welded and connected at the weld groove.

8. The cold plate assembly according to claim 4, characterized in that A first step surface is formed at the intersection of the connecting hole and the embedding groove, and a second step surface is formed at the intersection of the limiting portion and the connecting portion, and the second step surface abuts against the first step surface; A sealant layer is provided between the first step surface and the second step surface; At least one sealing ring is arranged between the connecting portion and the inner wall of the connecting hole, a sealing groove is arranged on at least one of the connecting portion and the inner wall of the connecting hole, and the sealing ring is at least partially arranged in the sealing groove.

9. The cold plate assembly according to claim 4, characterized in that The end of the limiting portion is flush with the surface of the cold plate structure; A battery cell is arranged on a side of the cold plate structure away from the seat bracket, and structural adhesive is arranged between the cold plate structure and the seat bracket, and the structural adhesive covers the embedding groove and the limiting portion.

10. An electrical device, characterized in that: The electrical equipment comprises the cold plate assembly according to any one of claims 1-9.

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