Split type busbar isolation support
By designing a split busbar isolation bracket composed of the first detachable sub-bracket, the edge curling phenomenon and adaptability of the isolation bracket are solved, and the adjustable length of the welding bracket and the efficient adaptation of the battery cell module are achieved, reducing the Production costs and safety hazards.
Patent Information
- Application Number
- CN202421034771.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-13
AI Technical Summary
In the prior art, isolation brackets are prone to curling edges, making it difficult to accurately install on the battery module, resulting in poor welding and adaptability problems, increasing production costs and safety hazards.
Design a split busbar isolation bracket. By setting the welding bracket to a plurality of detachable and connected first sub-brackets, the length of the welding bracket is adjustable, avoiding edge curling, and improving the battery cell module. Adaptability.
It effectively prevents the occurrence of edge-curling phenomena, improves the adaptability with the battery cell module, reduces the occurrence of welding failures, reduces production costs, and improves product safety.
Smart Images
Figure CN222463338U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of energy storage, in particular to a split busbar isolation bracket. Background Art
[0002] With the rapid development of electric vehicles and renewable energy technologies, the demand for efficient, safe and environmentally friendly battery packs is growing.
[0003] During the manufacturing process of the battery pack, the battery modules need to be stacked together first, and the isolation brackets need to be placed on the battery modules. Then, the busbars need to be precisely aligned with the positive and negative poles of the battery modules, and the two need to be fixed together through laser welding or other methods to achieve the series connection of the battery modules.
[0004] However, in the prior art, due to the long length of the isolation bracket and the fact that it is made of plastic, the isolation bracket is prone to warping, making it difficult to accurately install on the battery module, causing the welding of the busbar in the isolation bracket and the positive and negative poles on the battery module to produce cold welding, biased welding, welding explosion, etc., which poses a great hidden danger to production and use safety. In addition, the excessive length of the isolation bracket will also make the production line storage and turnover inconvenient, and the scrap rate is high.
[0005] Furthermore, since the isolation bracket needs to be adapted to the fixed battery pack, the isolation bracket cannot be shared by battery modules of different lengths. In order to adapt to different models of products, it is necessary to frequently open molds for the isolation bracket, which will again greatly increase the product development cost. Utility Model Content
[0006] In order to solve the above-mentioned technical problems, the utility model provides a split busbar isolation bracket, which can prevent the edge warping phenomenon from occurring and improve the compatibility with the battery core module.
[0007] The utility model provides a split busbar isolation bracket, comprising a welding bracket used to be relatively arranged on both sides of a battery core module, the welding bracket comprises a plurality of first sub-brackets, and the plurality of first sub-brackets are detachably connected in sequence.
[0008] Furthermore, a connecting groove extending along the width direction is formed at one end of the first sub-bracket, and a connecting rail extending along the width direction is formed at the other end of the first sub-bracket. The connecting rails of two adjacent first sub-brackets are combined with the connecting groove so that the two first sub-brackets can be detachably connected.
[0009] Furthermore, the first sub-bracket includes a connecting plate and a first support plate, the connecting plate extends along the length direction of the welding bracket, one end of the first support plate is connected to the connecting plate, and the other end of the first support plate extends in a direction perpendicular to the connecting plate. The first support plates are arranged at both ends of the connecting plate, and a protrusion is formed on the plate surface of the first support plate. When the two first sub-brackets are combined, the protrusions on the two first support plates form a boss.
[0010] Furthermore, the first sub-bracket further includes a second support plate, and the second support plate is disposed between the two first support plates, and a positioning space for positioning the busbar is formed between the first support plate and the second support plate.
[0011] Furthermore, first limit blocks are provided on the end surface of the first support plate facing the second support plate and on the end surfaces on both sides of the second support plate. The first limit blocks and the connecting plate jointly limit the bus in the width direction of the battery cell module.
[0012] Furthermore, the split busbar isolation bracket includes a second sub-bracket and a third sub-bracket for connecting to the first sub-bracket, the second sub-bracket is arranged on one of the two welding brackets and is located at both ends of the welding bracket, the third sub-bracket is arranged on the other of the two welding brackets and is located at both ends of the welding bracket, and the second sub-bracket and the third sub-bracket are arranged so that the first support plate on one of the welding brackets is arranged opposite to the second support plate on the other welding bracket.
[0013] Further, the second sub-bracket includes the connecting plate, the first supporting plate, the second supporting plate and the first side limiting plate, one end of the first side limiting plate is connected to the connecting plate, and the other end extends in a direction perpendicular to the connecting plate, the first side limiting plate, the first supporting plate and the second supporting plate are located on the same plane, and the second supporting plate is located between the first supporting plate and the first side limiting plate, and the positioning space is formed between the first side limiting plate and the second supporting plate; the third sub-bracket includes the connecting plate, the second side limiting plate and the first supporting plate, one end of the second side limiting plate is connected to the connecting plate, and the other end extends in a direction perpendicular to the connecting plate, and the positioning space is formed between the second side limiting plate and the first supporting plate.
[0014] Furthermore, a bearing wall is arranged on the upper plate surface of the second supporting plate, and the top of the bearing wall is flush with the top of the connecting plate.
[0015] Furthermore, at a position of the connecting plate corresponding to the first supporting plate, the connecting plate is recessed in the direction of the first supporting plate to form an escape portion.
[0016] To sum up, in the utility model, by setting the welding bracket as a plurality of detachable and sequentially connected first sub-brackets, it is possible to make the length of each independent first sub-bracket shorter to prevent the occurrence of warping; at the same time, the length of the welding bracket can be determined according to the number of assembled first sub-brackets, thereby improving the adaptability with the battery cell module.
[0017] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 The figure shows a schematic structural diagram of the split busbar isolation bracket provided by the utility model when welding the busbar.
[0019] Figure 2 Shown Figure 1 Schematic diagram of the exploded structure between the split bus isolation bracket, bus and battery cell module.
[0020] Figure 3 Shown is a schematic diagram of the axial structure of a split busbar isolation bracket.
[0021] Figure 4 Shown is a schematic structural diagram of the split busbar isolation bracket when the two first sub-brackets are separated.
[0022] Figure 5 Shown Figure 4 Schematic diagram of the structure when two first sub-brackets are combined.
[0023] Figure 6 Shown Figure 4 Schematic diagram of the axial structure of the first sub-bracket.
[0024] Figure 7 Shown is a schematic diagram of the structure of the second sub-bracket in the split busbar isolation bracket.
[0025] Figure 8 Shown is a schematic structural diagram of the third sub-bracket in the split busbar isolation bracket.
[0026] Fig. 9 The figure shows a schematic diagram of the structure when a plurality of first sub-supports are stacked. DETAILED DESCRIPTION
[0027] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the present invention, the following is a detailed description in conjunction with the accompanying drawings and preferred embodiments.
[0028] The utility model provides a split busbar isolation bracket, which can prevent edge warping and improve the compatibility with a battery core module.
[0029] Figure 1 The figure shows a schematic diagram of the structure of the split busbar isolation bracket provided by the utility model when the busbar is welded. Figure 2 Shown Figure 1 Schematic diagram of the exploded structure between the split busbar isolation bracket, busbar and battery module. Figure 3 The figure shows the axial structure diagram of the split busbar isolation bracket. Figures 1 to 3 As shown, the busbar isolation bracket provided in the embodiment of the utility model includes a welding bracket 10 for being relatively arranged on both sides of the battery cell module 20, and the welding bracket 10 includes a plurality of first sub-brackets 11, and the plurality of first sub-brackets 11 are detachably connected in sequence.
[0030] In this embodiment, when welding the bus 30, the welding bracket 10 can be firstly arranged on both sides of the battery cell module 20 relatively, and then the bus 30 is placed on the battery cell module 20 through the positioning of the welding bracket 10, and the bus 30 and the battery cell module 20 are fixed by laser welding; finally, the welding bracket 10 is pulled out.
[0031] Since in this embodiment, the welding bracket 10 includes multiple detachable first sub-brackets 11 that are connected in sequence, when in use, the multiple first sub-brackets 11 can be assembled into a welding bracket 10 to realize the function of the welding bracket 10; after completing the welding of the bus 30, the welding bracket 10 can be disassembled and decomposed into the first sub-brackets 11 one by one and stored separately.
[0032] Since the length of the first sub-bracket 11 is relatively short, the occurrence of warping can be effectively prevented; since the length of the welding bracket 10 is determined by the number of the first sub-brackets 11, the length of the welding bracket 10 can be adjusted according to the model of the battery module 20 to improve the compatibility with the battery module 20.
[0033] Figure 4 The figure shows the structure schematic diagram of the split busbar isolation bracket when the two first sub-brackets are separated. Figure 5 Shown Figure 4 A schematic diagram of the structure when two first sub-brackets are combined. Figure 4 and Figure 5As shown, in this embodiment, a connection groove 141 extending along the width direction (that is, the width direction of the battery module 20) is formed on the end surface of one end of the first sub-bracket 11, and a connection rail 142 extending along the width direction is formed on the end surface of the other end of the first sub-bracket 11. The connection rails 142 of two adjacent first sub-brackets 11 are combined with the connection groove 141 to complete the connection of the two first sub-brackets 11. Through the arrangement of the connection groove 141 and the connection rail 142, the connection and separation of the two first sub-brackets 11 can be relatively easily achieved, while ensuring the stability of the connection of the two first sub-brackets 11.
[0034] Figure 6 Shown Figure 4 Please refer to the axial structure diagram of the first sub-bracket in the figure. Figure 1 , Figure 2 and Figure 6 In this embodiment, the first sub-bracket 11 includes a connecting plate 151, a first supporting plate 152 and a second supporting plate 153. The connecting plate 151 extends along the length direction of the welding bracket 10. One end of the first supporting plate 152 and one end of the second supporting plate 153 are both connected to the connecting plate 151. The other end of the first supporting plate 152 and the other end of the second supporting plate 153 extend in a direction perpendicular to the connecting plate 151. A first supporting plate 152 is disposed at both ends of the connecting plate 151. The first supporting plate 152 and the second supporting plate 153 are located on the same plane, and the second supporting plate 153 is disposed between the two first supporting plates 152. A positioning space 16 for positioning the busbar 30 is formed between the first supporting plate 152 and the second supporting plate 153. A protrusion 1521 is formed on one side of the first support plate 152 away from the second support plate 153 . When the two first sub-brackets 11 are combined, the protrusions 1521 on the two first support plates 152 contact each other to form a boss.
[0035] The arrangement of the boss can, on the one hand, limit the position of the busbar 30 , and on the other hand, provide a guide for taking out the welding bracket 10 after the busbar 30 is welded.
[0036] When the welding bracket 10 is set on the battery module 20, the plane where the connecting plate 151 is located is perpendicular to the plane where the poles on the battery module 20 are located, and the planes where the first support plate 152 and the second support plate 153 are located are parallel to the plane where the poles on the battery module 20 are located.
[0037] In this embodiment, a first notch 171 is provided on the end surface of the first support plate 152 facing the second support plate 153, and on the end surfaces on both sides of the second support plate 153. A first stopper 172 is provided in the first notch 171. Figure 1As shown, when the busbar 30 is placed on the welding bracket 10, the busbar 30 is sandwiched between the connecting plate 151 and the first limiting block 172. That is, the first limiting block 172 and the connecting plate 151 together limit the busbar 30 in the width direction of the battery module 20.
[0038] Furthermore, the first limit block 172 includes a first elastic arm 1721 connected to the first support plate 152 or the second support plate 153 and extending along the length direction of the welding bracket 10, and a first pressing block 1722 extending upward from the end of the first elastic arm 1721. Through the provision of the first elastic arm 1721 and the first pressing block 1722, the busbar 30 can be better fixed and prevented from coming out from between the first limit block 172 and the connecting plate 151.
[0039] Please continue to refer to Figure 1 , Figure 2 and Figure 6 In this embodiment, second notches 181 are further provided on the end faces of both sides of the second support plate 153, and second limit blocks 182 are provided in the second notches 181. The second limit blocks 182 extend in a direction perpendicular to the second support plate 153. When the busbar 30 is placed on the welding bracket 10, the busbar 30 is sandwiched between the second limit blocks 182 and the cell module 20. That is, the second limit blocks 182 and the cell module 20 together limit the busbar 30 in the height direction of the cell module 20.
[0040] Furthermore, the second limiting block 182 includes a second elastic wall 1821 connected to the second support plate 153 and extending upward perpendicularly to the second support plate 153, and a second pressing block 1822 disposed at the end of the second elastic wall 1821 and extending into the positioning space 16. When the busbar 30 contacts the battery module 20, the busbar 30 is sandwiched between the second pressing block 1822 and the battery module 20.
[0041] By providing the second elastic wall 1821 and the second pressing block 1822 , the second elastic wall 1821 can be deformed to facilitate placement of the bus 30 . After the bus 30 is placed in place, the bus 30 is pressed onto the battery module 20 by the second pressing block 1822 .
[0042] In this embodiment, there is a protrusion in the middle of each bus 30. When positioning the bus 30, the protrusion is placed on a boss formed by the raised portions 1521 of the two first support plates 152. The two ends of the bus 30 respectively span the two positioning spaces 16 to rest against the side surfaces of the second elastic walls 1821 on the two adjacent second support plates 153.
[0043] Figure 7The figure shows the structure schematic diagram of the second sub-bracket in the split busbar isolation bracket. Figure 8 The figure shows the structure diagram of the third sub-bracket in the split busbar isolation bracket. Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, the split busbar isolation bracket also includes a second sub-bracket 12 and a third sub-bracket 13 for connecting to the first sub-bracket 11. The second sub-bracket 12 is arranged on one of the two welding brackets 10 and is located at both ends of the welding bracket 10; the third sub-bracket 13 is arranged on the other of the two welding brackets 10 and is located at both ends of the welding bracket 10.
[0044] The second sub-bracket 12 may also include a connecting plate 151, a first support plate 152 and a second support plate 153. Unlike the first sub-bracket 11, the second sub-bracket 12 also includes a first side limiting plate 154, one end of which is connected to the connecting plate 151, and the other end of which extends in a direction perpendicular to the connecting plate 151. The first side limiting plate 154, the first support plate 152 and the second support plate 153 are located on the same plane, and the second support plate 153 is located between the first support plate 152 and the first side limiting plate 154. A positioning space 16 is also formed between the first side limiting plate 154 and the second support plate 153. That is, on the second sub-bracket 12, the first side limiting plate 154 replaces the position of one of the first support plates 152. A positioning space 16 is formed between the first side limiting plate 154 and the second support plate 153.
[0045] Since the second sub-bracket 12 is located at both ends of the welding bracket 10, the second sub-bracket 12 only needs to be connected to the adjacent first sub-bracket 11 through a first support plate 152, and the first side limiting plate 154 will no longer be connected to other first sub-brackets 11. Therefore, the first side limiting plate 154 does not need to be provided with a connecting groove 141 or a connecting rail 142.
[0046] Different from the second sub-bracket 12, the third sub-bracket 13 may only include a second side stop plate 155 and a first support plate 152, without providing the second support plate 153. One end of the second side stop plate 155 and the first support plate 152 are connected to the connecting plate 151, and the other end extends in a direction perpendicular to the connecting plate 151. The second side stop plate 155 and the first support plate 152 are located on the same plane. A positioning space 16 is also formed between the second side stop plate 155 and the first support plate 152.
[0047] In this embodiment, since the structures of the second sub-bracket 12 and the third sub-bracket 13 are different, when a welding bracket 10 with second sub-brackets 12 at both ends and a plurality of first sub-brackets 11 in the middle and a welding bracket 10 with third sub-brackets 13 at both ends and a plurality of first sub-brackets 11 in the middle are placed on both sides of the battery module 20, the first support plate 152 on one welding bracket 10 is arranged opposite to the second support plate 153 on the other welding bracket 10. The above arrangement can help to achieve the series connection of the battery module 20.
[0048] It can be understood that the second sub-bracket 12 and the third sub-bracket 13 are brackets arranged at the ends of the welding bracket 10, and their shapes may not be limited to the above-mentioned. The second sub-bracket 12 may also include two first support plates 152 and two second support plates 153 in addition to the first side limit plate 154; at the same time, the third sub-bracket 13 may also include two first support plates 152 and one second support plate 153. The second sub-bracket 12 and the third sub-bracket 13 can be arranged as long as the first support plate 152 on one welding bracket 10 and the second support plate 153 on the other welding bracket 10 are arranged opposite to each other during welding.
[0049] It should be explained that a first stopper 172 may also be provided on the end surface of the first side stopper plate 154 facing the second support plate 153, and on the end surface of the second side stopper plate 155 facing the first support plate 152, so as to facilitate the positioning of the auxiliary bus 30. A second stopper 182 may also be provided on the end surface of the first support plate 152 facing the second side stopper plate 155 on the third sub-bracket 13.
[0050] Furthermore, a connecting block 156 is provided at the connection between the first side limit plate 154 and the connecting plate 151 on the second sub-bracket 12, and at the connection between the second side limit plate 155 and the connecting plate 151 on the third sub-bracket 13. A connecting hole 1561 is opened on the connecting block 156, and a connecting bolt passes through the connecting hole 1561 to connect with the battery cell module 20 to achieve fixation between the welding bracket 10 and the battery cell module 20.
[0051] Fig. 9 The figure shows the structure of multiple first sub-brackets stacked together. Figures 4 to 9 In this embodiment, a bearing wall 1531 is provided on the upper plate surface of the second support plate 153, the top of the bearing wall 1531 is flush with the top of the connecting plate 151, and the bottom of the connecting plate 151 is flush with the bottom of the first support plate 152. The height of the bearing wall 1531 is at least not less than twice the height of the protrusion 1521.
[0052] In this embodiment, since each welding bracket 10 can be split into a plurality of first sub-brackets 11, in order to save storage space, the plurality of first sub-brackets 11 can be stacked. When stacking, one first sub-bracket 11 can be buckled on another first sub-bracket 11, at which time, the protrusions 1521 on the two first support plates 152 are arranged opposite to each other, and the top of the bearing wall 1531 on one first sub-bracket 11 abuts against the plate surface of the second support plate 153 on the other first sub-bracket 11.
[0053] Furthermore, in this embodiment, at the position corresponding to the connection plate 151 and the first support plate 152, a relief portion 1511 is formed by being recessed in the direction of the first support plate 152. The setting of the relief portion 1511 can increase the connection strength between the plurality of first sub-racks 11, between the first sub-rack 11 and the second sub-rack 12, and between the first sub-rack 11 and the third sub-rack 13, and can also facilitate the taking of the plurality of first sub-racks 11 after they are stacked.
[0054] To sum up, in the present invention, by setting the welding bracket 10 as a plurality of detachable first sub-brackets 11 connected in sequence, it is possible to make the length of each independent first sub-bracket 11 shorter to prevent the occurrence of warping; at the same time, the length of the welding bracket 10 can be determined according to the number of assembled first sub-brackets 11, thereby improving the adaptability with the battery cell module 20.
[0055] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. A split busbar isolation bracket, comprising welding brackets arranged on both sides of a battery cell module, characterized in that: The welding bracket includes a plurality of first sub-brackets, and the plurality of first sub-brackets are detachably connected in sequence.
2. The split busbar isolation bracket according to claim 1, characterized in that: A connecting groove extending along the width direction is formed at one end of the first sub-bracket, and a connecting rail extending along the width direction is formed at the other end of the first sub-bracket. The connecting rails of two adjacent first sub-brackets are combined with the connecting groove so that the two first sub-brackets can be detachably connected.
3. The split busbar isolation bracket according to claim 1, characterized in that: The first sub-bracket includes a connecting plate and a first supporting plate, the connecting plate extends along the length direction of the welding bracket, one end of the first supporting plate is connected to the connecting plate, and the other end of the first supporting plate extends in a direction perpendicular to the connecting plate. The first supporting plates are arranged at both ends of the connecting plate, and a protrusion is formed on the plate surface of the first supporting plate. When the two first sub-brackets are combined, the protrusions on the two first supporting plates form a boss.
4. The split busbar isolation bracket according to claim 3 is characterized in that: The first sub-bracket further includes a second support plate, which is disposed between the two first support plates, and a positioning space for positioning the busbar is formed between the first support plate and the second support plate.
5. The split busbar isolation bracket according to claim 4, characterized in that: A first limiting block is provided on the end surface of the first support plate facing the second support plate, and on the end surfaces on both sides of the second support plate. The first limiting block and the connecting plate jointly limit the busbar in the width direction of the battery cell module.
6. The split busbar isolation bracket according to claim 4, characterized in that: Second limit blocks are also provided on the end surfaces on both sides of the second support plate. The second limit blocks extend in a direction perpendicular to the second support plate. The second limit blocks and the battery cell module jointly limit the bus in the height direction of the battery cell module.
7. The split busbar isolation bracket according to claim 4, characterized in that: The split busbar isolation bracket includes a second sub-bracket and a third sub-bracket for connecting to the first sub-bracket, the second sub-bracket is arranged on one of the two welding brackets and is located at both ends of the welding bracket, the third sub-bracket is arranged on the other of the two welding brackets and is located at both ends of the welding bracket, and the second sub-bracket and the third sub-bracket are arranged so that the first support plate on one of the welding brackets is arranged opposite to the second support plate on the other welding bracket.
8. The split busbar isolation bracket according to claim 7, characterized in that: The second sub-bracket includes the connecting plate, the first supporting plate, the second supporting plate and the first side limiting plate, one end of the first side limiting plate is connected to the connecting plate, and the other end extends in a direction perpendicular to the connecting plate, the first side limiting plate, the first supporting plate and the second supporting plate are located on the same plane, and the second supporting plate is located between the first supporting plate and the first side limiting plate, and the positioning space is formed between the first side limiting plate and the second supporting plate; the third sub-bracket includes the connecting plate, the second side limiting plate and the first supporting plate, one end of the second side limiting plate is connected to the connecting plate, and the other end extends in a direction perpendicular to the connecting plate, and the positioning space is formed between the second side limiting plate and the first supporting plate.
9. The split busbar isolation bracket according to claim 4, characterized in that: A bearing wall is arranged on the upper plate surface of the second supporting plate, and the top of the bearing wall is flush with the top of the connecting plate.
10. The split busbar isolation bracket according to claim 4, characterized in that: A position of the connecting plate corresponding to the first supporting plate is recessed toward the direction of the first supporting plate to form an escape portion.