Power battery CCS support and battery pack

Abstract

The utility model belongs to the technical field of battery manufacturing, and discloses a power battery CCS support and a battery pack, the power battery CCS support comprises a support main body, the support main body comprises a plurality of support split bodies, two ends of the support split bodies in the length direction are respectively provided with a first riveting part and a second riveting part, the first riveting part is provided with a plurality of riveting columns, and the second riveting part is provided with a plurality of second riveting columns. The first riveting part is provided with a plurality of riveting columns, the second riveting part is provided with a plurality of riveting holes matched with the riveting columns, the first riveting part of one support split body is correspondingly matched and riveted with the second riveting part of the other support split body to form at least a plurality of riveting areas, and the plurality of riveting areas are arranged at intervals along the width direction of the support main body. According to the utility model, by adopting a mode of splicing a plurality of bracket split bodies, under the condition of ensuring the overall strength of the bracket, the problem that the bracket is limited by a process during mold opening is reduced, the manufacturing difficulty is reduced, the manufacturing cost is low, and the processing efficiency is favorably improved.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a power battery CCS bracket and battery pack. Background Technology

[0002] The plastic components used in the wiring harness separator of the CCS (Cell Contact System) currently employed in square power batteries have a series of obvious defects.

[0003] First, in the construction of a battery pack, the battery cells work in series. As the number of cells in series increases in a battery pack, the size of the plastic bracket used to isolate the wiring harness must also increase accordingly. However, plastic is a material with certain limitations in manufacturing processes. When the size of the plastic bracket increases, the difficulty of manufacturing it increases exponentially. This is because the molding process for large-sized plastic parts requires more stringent control over parameters such as mold precision, injection pressure, and temperature. If any parameter deviates, it can easily lead to product defects, such as deformation or cracking.

[0004] This increased manufacturing difficulty directly leads to increased costs. On the one hand, the cost of mold production increases with size, as more complex designs and higher-quality materials are needed to ensure the mold's precision and durability. On the other hand, the increased scrap rate during production may also indirectly increase the cost per unit due to the increased manufacturing difficulty.

[0005] Moreover, production efficiency will also decrease due to these factors. During the manufacturing process, the time required to produce each plastic bracket will increase due to the need for stricter process control. This results in a reduction in the number of qualified products that can be produced within the same production time, thereby reducing production efficiency. Utility Model Content

[0006] The purpose of this utility model is to provide a power battery CCS bracket. By using multiple brackets to splice together separately, the process limitations encountered during the mold making of the bracket are reduced, the manufacturing difficulty and manufacturing cost are reduced, and the processing efficiency is improved.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] On one hand, a power battery CCS bracket is provided, including a bracket body, the bracket body including multiple bracket segments, and a first riveting part and a second riveting part respectively provided at both ends of the bracket segments along the length direction. The first riveting part is provided with multiple riveting posts, and the second riveting part is provided with multiple riveting holes that cooperate with the riveting posts. The first riveting part of one bracket segment and the second riveting part of another bracket segment are riveted together to form a riveting area. At least multiple riveting areas are provided, and the multiple riveting areas are spaced apart along the width direction of the bracket body.

[0009] In one embodiment, at least one of the first riveting portions includes a first connecting plate, guide plates respectively disposed at intervals on both sides of the first connecting plate, and a plurality of riveting posts fixedly disposed on the first connecting plate.

[0010] The second riveting part, which is riveted to the first riveting part that is provided with the guide plate, includes a second connecting plate. The second connecting plate is provided with a plurality of riveting holes. The two sides of the second connecting plate that are parallel to the guide plate are guide sidewalls, and the two guide sidewalls abut against the guide plates on the corresponding sides.

[0011] In one embodiment, the connection between the side wall of the second connecting plate away from the bracket body and the two guide side walls is rounded.

[0012] In one embodiment, at least three riveting areas are provided, including a first riveting area disposed on both sides of the bracket body and a second riveting area disposed in the middle of the bracket body. The length direction of the first riveting area is parallel to the width direction of the bracket body, and the length direction of the second riveting area is parallel to the length direction of the bracket body.

[0013] In one embodiment, the plurality of riveting posts are arranged in a matrix, wherein the length direction of the matrix formed by the riveting posts in the first riveting area is parallel to the width direction of the bracket body, and the length direction of the matrix formed by the riveting posts in the second riveting area is parallel to the length direction of the bracket body.

[0014] In one embodiment, two adjacent riveting areas are spaced apart from each other along the length of the bracket body.

[0015] In one embodiment, the spacing between two adjacent riveting posts is set to be between 12 mm and 15 mm.

[0016] In one embodiment, the top of the rivet post is chamfered.

[0017] On the other hand, a battery pack is provided, including the aforementioned power battery CCS bracket, and also including a housing and a cell module. The bracket body is mounted on the cell module, and the housing is provided with a battery cavity for placing the cell module and the power battery CCS bracket.

[0018] In one embodiment, a partition is provided inside the housing, which divides the housing into a battery chamber and a pressure relief chamber. The partition is provided with a pressure relief through hole for connecting the battery chamber and the pressure relief chamber. A pressure relief valve is provided on the outer wall of the pressure relief chamber on the side away from the battery chamber.

[0019] The support body is provided with a pressure relief hole corresponding to the pressure relief port of the battery cell module. The support body and the inner side wall of the box are spaced apart to form a pressure relief channel. The pressure relief hole is connected to the pressure relief through hole through the pressure relief channel.

[0020] The beneficial effects of this utility model are:

[0021] This utility model discloses a power battery CCS bracket. It designs a main bracket body as multiple bracket segments, each with a first and second riveting part that are riveted together. These smaller bracket segments are assembled into a larger main bracket body through riveting. The smaller bracket segments are less constrained by process limitations during mold making, have lower manufacturing difficulty and cost, and improve processing efficiency. Furthermore, the number of bracket segments can be riveted and spliced ​​according to the specific battery pack size, enabling customized designs for different battery pack specifications, thus offering strong applicability. Further, the first and second riveting parts of adjacent bracket segments are riveted together to form multiple riveting areas, ensuring a stable connection between the two connected bracket segments. These multiple riveting areas are spaced apart along the width of the main bracket body, effectively preventing the main bracket body from melting due to concentrated heat during hot riveting operations or the riveting areas from interfering with each other, thus maintaining the overall strength of the main bracket body. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the power battery CCS bracket in one embodiment;

[0023] Figure 2 This is a top view of the CCS bracket for the power battery in one embodiment.

[0024] Figure 3 This is a schematic diagram of the structure of the bracket split (one end with the first riveting part) in one embodiment;

[0025] Figure 4This is a schematic diagram of the structure of the bracket split (one end with the second riveting part) in one embodiment;

[0026] Figure 5 This is a schematic diagram of the riveted post in one embodiment;

[0027] Figure 6 This is a schematic diagram of the battery pack structure in one embodiment;

[0028] Figure 7 This is a schematic diagram of the cross-sectional structure of the battery pack in one embodiment.

[0029] In the picture:

[0030] 100. Main body of bracket; 110. Split bracket; 111. First riveting part; 1111. First connecting plate; 1112. Guide plate; 112. Second riveting part; 1121. Second connecting plate; 1122. Guide sidewall; 120. Riveting post; 130. Riveting hole; 140. Riveting area; 141. First riveting area; 142. Second riveting area; 150. Pressure relief hole; 200. Battery pack; 210. Housing; 211. Battery cavity; 212. Pressure relief cavity; 213. Pressure relief valve; 214. Pressure relief channel; 220. Cell module; 221. Pressure relief port; 230. Partition plate; 231. Pressure relief through hole. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0035] like Figures 1 to 4 As shown, a power battery CCS bracket of this embodiment includes a bracket body 100, which includes multiple bracket segments 110. A first riveting portion 111 and a second riveting portion 112 are respectively provided at both ends of the bracket segments 110 in the length direction. The first riveting portion 111 is provided with multiple riveting posts 120, and the second riveting portion 112 is provided with multiple riveting holes 130 that cooperate with the riveting posts 120. The first riveting portion 111 of one bracket segment 110 and the second riveting portion 112 of another bracket segment 110 are riveted together to form a riveting area 140. At least multiple riveting areas 140 are provided, and the multiple riveting areas 140 are spaced apart along the width direction of the bracket body 100.

[0036] In this embodiment, a single support body 100 is designed as multiple support segments 110, each with a first riveting portion 111 and a second riveting portion 112 that are riveted together. These smaller support segments 110 are then assembled into a larger support body 100 via riveting connections. The smaller support segments 110 are less subject to process limitations during mold making, have lower manufacturing difficulty and cost, thus improving processing efficiency. Furthermore, the number of support segments 110 can be riveted together according to the specific battery pack size, enabling customized designs for different battery pack specifications and demonstrating strong applicability.

[0037] Furthermore, the first riveting portion 111 and the second riveting portion 112 of two adjacent bracket parts 110 are riveted together to form multiple riveting areas 140, so as to ensure that the riveting between the two connected bracket parts 110 is stable. In addition, the multiple riveting areas 140 are spaced apart along the width direction of the bracket body 100, which can effectively prevent the bracket body 100 from melting due to heat concentration or the riveting areas 140 from affecting each other and affecting the overall strength of the bracket body 100 during hot riveting operations.

[0038] In one embodiment, at least one first riveting portion 111 includes a first connecting plate 1111, guide plates 1112 respectively disposed at intervals on both sides of the first connecting plate 1111, and a plurality of riveting posts 120 fixedly disposed on the first connecting plate 1111. A second riveting portion 112, riveted corresponding to the first riveting portion 111 with guide plates 1112, includes a second connecting plate 1121. The second connecting plate 1121 has a plurality of riveting holes 130. The two sides of the second connecting plate 1121 parallel to the guide plates 1112 are guide sidewalls 1122, which abut against the guide plates 1112 on the corresponding sides. During assembly, the second connecting plate 1121 extends between the two guide plates 1112, causing the guide sidewalls 1122 on both sides of the second connecting plate 1121 to abut against the guide plates 1112 on the corresponding sides, achieving rapid positioning and improving the efficiency of assembly.

[0039] In one embodiment, the connection point between the side wall of the second connecting plate 1121 away from the bracket split 110 and the two guide side walls 1122 is rounded, making it easier for the second connecting plate 1121 to be inserted between the two guide plates 1112 for quick positioning, thereby improving the efficiency of splicing and assembly. Moreover, the rounded corners can prevent the second connecting plate 1121 from bumping or scratching the guide plates 1112.

[0040] In one embodiment, at least three riveting areas 140 are provided. Each riveting area 140 includes a first riveting area 141 located at both sides of the support body 100 and a second riveting area 142 located in the middle of the support body 100. The length direction of the first riveting area 141 is parallel to the width direction of the support body 100, and the length direction of the second riveting area 142 is parallel to the length direction of the support body 100. Specifically, when the two sides of the support body 100 are subjected to shear force along the width direction of the support body 100, the first riveting area 141, whose length direction is parallel to the width direction of the support body 100, has strong shear resistance. When the support body 100 is subjected to tensile force along the length direction of the support body 100, the second riveting area 142, located in the middle of the support body 100, whose length direction is parallel to the length direction of the support body 100, has strong tensile resistance. Therefore, by setting the first riveting area 141 and the second riveting area 142, the riveted support body 100 can be effectively improved to have good shear strength and tensile strength, which is conducive to ensuring the overall strength and stability of the support body 100.

[0041] In one embodiment, multiple riveting posts 120 are arranged in a matrix. The matrix of riveting posts 120 in the first riveting area 141 is parallel to the width direction of the support body 100 in its length direction, and the matrix of riveting posts 120 in the second riveting area 142 is parallel to the length direction of the support body 100 in its length direction. The matrix arrangement of the riveting posts 120 and riveting holes 130 simplifies processing, produces an aesthetically pleasing riveting area 140, and facilitates the design of the length and width of the riveting area 140.

[0042] In one embodiment, adjacent riveting areas 140 are spaced apart along the length of the support body 100. This avoids two adjacent riveting areas 140 being located on the same cross-section of the support body 100 along its width, preventing the cross-sectional strength of the riveted support body 100 from being too low in a certain part, which would affect the overall stability of the support body 100. Furthermore, all riveting areas 140 are spaced apart along the length of the support body 100 to improve the overall stability and strength of the support body 100 and reduce the possibility of the support body 100 breaking at the riveting point.

[0043] In one embodiment, the spacing between two adjacent riveting posts 120 is set between 12mm and 15mm. In this embodiment, the spacing between two adjacent riveting posts 120 is specifically set to 13mm, which can effectively ensure the strength of hot riveting and prevent the heat generated during hot riveting from concentrating and melting the bracket body 100, thus affecting the overall strength of the bracket body 100. Of course, in actual operation, the spacing between the two riveting posts 120 can also be set to 12mm, 12.5mm, 14mm, 15mm, etc., as long as the strength of hot riveting is guaranteed and the strength of the bracket body is not affected. Such designs are all within the protection scope of this utility model.

[0044] like Figure 5 As shown, in one embodiment, the top of the rivet post 120 is chamfered so that the rivet hole 130 can be more easily fitted into the rivet post 120 when the rivet hole 130 and the rivet post 120 are fitted together, which helps to improve the efficiency of splicing and assembly.

[0045] On the other hand, such as Figures 6 to 7 As shown, this embodiment also provides a battery pack, wherein the battery pack 200 includes the above-mentioned power battery CCS bracket, and also includes a housing 210 and a cell module 220. The bracket body 100 is mounted on the cell module 220, and the housing 210 is provided with a battery cavity 211 for placing the cell module 220 and the power battery CCS bracket.

[0046] In one embodiment, a partition 230 is provided inside the housing 210, dividing the housing 210 into a battery chamber 211 and a pressure relief chamber 212. The partition 230 has a pressure relief through-hole 231 for connecting the battery chamber 211 and the pressure relief chamber 212. A pressure relief valve 213 is provided on the outer wall of the pressure relief chamber 212 away from the battery chamber 211, wherein the pressure relief valve 213 communicates with the pressure relief chamber 212 to relieve pressure. A pressure relief hole 150 is provided on the support body 100, corresponding to the pressure relief port 221 of the cell module 220. The support body 100 and the inner sidewall of the housing 210 are spaced apart to form a pressure relief channel 214, and the pressure relief hole 150 communicates with the pressure relief through-hole 231 through the pressure relief channel 214. Specifically, when the cell module 220 is depressurized, high-temperature and high-pressure substances can be quickly introduced into the depressurization chamber 212 through the depressurization hole 150 along the depressurization channel 214 and the depressurization through hole 231, and then discharged outside the housing 210 through the depressurization valve 213, thus achieving rapid depressurization. This helps to avoid problems such as breakage or damage to the support body 100 and damage to the cell module 220 caused by excessive temperature or pressure inside the housing 210, and helps to improve the overall safety performance of the battery pack 200.

[0047] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A power battery CCS bracket, characterized in that, The system includes a support body (100), which includes multiple support segments (110). Each support segment (110) has a first riveting part (111) and a second riveting part (112) at both ends along its length. The first riveting part (111) has multiple riveting posts (120), and the second riveting part (112) has multiple riveting holes (130) that cooperate with the riveting posts (120). The first riveting part (111) of one support segment (110) and the second riveting part (112) of another support segment (110) are riveted together to form a riveting area (140). There are at least multiple riveting areas (140), which are spaced apart along the width direction of the support body (100).

2. The power battery CCS bracket according to claim 1, characterized in that, At least one of the first riveting parts (111) includes a first connecting plate (1111), guide plates (1112) respectively disposed on both sides of the first connecting plate (1111) at intervals, and a plurality of the riveting posts (120) are fixedly disposed on the first connecting plate (1111); The second riveting part (112), which is riveted to the first riveting part (111) provided with the guide plate (1112), includes a second connecting plate (1121). The second connecting plate (1121) is provided with a plurality of riveting holes (130). The two sides of the second connecting plate (1121) parallel to the guide plate (1112) are guide sidewalls (1122), and the two guide sidewalls (1122) abut against the guide plates (1112) on the corresponding sides respectively.

3. The power battery CCS bracket according to claim 2, characterized in that, The connection points of the second connecting plate (1121) on the side away from the bracket split (110) and the guide sidewalls (1122) on both sides are respectively rounded.

4. The power battery CCS bracket according to any one of claims 1 to 3, characterized in that, At least three riveting areas (140) are provided. Each riveting area (140) includes a first riveting area (141) disposed on both sides of the bracket body (100) and a second riveting area (142) disposed in the middle of the bracket body (100). The length direction of the first riveting area (141) is parallel to the width direction of the bracket body (100), and the length direction of the second riveting area (142) is parallel to the length direction of the bracket body (100).

5. The power battery CCS bracket according to claim 4, characterized in that, The multiple riveting posts (120) are arranged in a matrix. The length direction of the matrix formed by the riveting posts (120) in the first riveting area (141) is parallel to the width direction of the bracket body (100). The length direction of the matrix formed by the riveting posts (120) in the second riveting area (142) is parallel to the length direction of the bracket body (100).

6. The power battery CCS bracket according to any one of claims 1 to 3, characterized in that, The two adjacent riveting areas (140) are spaced apart from each other along the length of the bracket body (100).

7. The power battery CCS bracket according to any one of claims 1 to 3, characterized in that, The spacing between two adjacent riveting posts (120) is set to be between 12mm and 15mm.

8. The power battery CCS bracket according to any one of claims 1 to 3, characterized in that, The top of the rivet post (120) is chamfered.

9. A battery pack, characterized in that, The power battery CCS bracket as described in any one of claims 1 to 8 further includes a housing (210) and a cell module (220), wherein the bracket body (100) is mounted on the cell module (220), and the housing (210) is provided with a battery cavity (211) for placing the cell module (220) and the power battery CCS bracket.

10. The battery pack according to claim 9, characterized in that, The housing (210) is provided with a partition (230), which divides the housing (210) into a battery chamber (211) and a pressure relief chamber (212). The partition (230) is provided with a pressure relief through hole (231) for connecting the battery chamber (211) and the pressure relief chamber (212). A pressure relief valve (213) is provided on the outer wall of the pressure relief chamber (212) away from the battery chamber (211). The support body (100) is provided with a pressure relief hole (150) corresponding to the pressure relief port (221) of the battery cell module (220). The support body (100) and the inner sidewall of the box (210) are spaced apart to form a pressure relief channel (214). The pressure relief hole (150) is connected to the pressure relief through hole (231) through the pressure relief channel (214).

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