Integrated busbar

Abstract

An integrated busbar comprises a support, a flexible printed circuit board and a plurality of confluence pieces, the flexible printed circuit board and the confluence pieces are arranged on the support, the flexible printed circuit board is provided with a connector and a plurality of buffer arms, the connector is arranged at the end of the flexible printed circuit board, the free end of each buffer arm is provided with an acquisition part, and one acquisition part is connected to one confluence piece. A first connecting part is arranged on the pressing block, a second connecting part is arranged at the end, close to the connector, of the support, the pressing block is fixed to the support through cooperation of the first connecting part and the second connecting part, and the bottom face of the pressing block abuts against the flexible printed circuit board. Compared with the prior art, the integrated busbar provided by the utility model is provided with the pressing block capable of pressing the flexible printed circuit board, so that the flexible printed circuit board positioned on the bracket and the buffer arm close to the connector are not easy to pull and break.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the integrated busbar technical field, concretely relates to an integrated busbar. BACKGROUND

[0002] In the existing integrated busbar design, in order to reduce the influence of battery swelling on the connection between the busbar and the nickel sheet, the collection branch of FPC (flexible printed circuit board) is provided with a buffer arm (the nickel sheet is connected to the free end of the buffer arm) structure, and the buffer arm can make the nickel sheet have activity, so that the nickel sheet can move with the busbar when the battery swells, thereby reducing the influence of battery swelling.

[0003] The FPC is provided with a connector for external electrical connection, and in actual use, the connector is in a drooping state and is not supported by the integrated busbar support, and the connector is drooped by its own gravity or shaken and pulled during the client insertion and use, which will pull the buffer arm close to the connector, and since the buffer arm has very low strength, the buffer arm close to the connector is at risk of breaking after being pulled. SUMMARY

[0004] The utility model aims at overcoming the defects in the prior art and providing an integrated busbar.

[0005] To achieve the above object, the utility model discloses an integrated busbar, which comprises a support, a flexible printed circuit board arranged on the support and a plurality of busbars, the flexible printed circuit board is provided with a connector and a plurality of buffer arms, the connector is arranged at the end of the flexible printed circuit board, the free end of each buffer arm is provided with a collection part, one collection part is connected to one busbar, further comprising a pressing block, the pressing block is provided with a first connecting part, the end of the support close to the connector is provided with a second connecting part, the pressing block is fixed on the support through the cooperation of the first connecting part and the second connecting part, and the bottom surface of the pressing block abuts against the flexible printed circuit board.

[0006] Preferably, the first connecting part is a through hole, the second connecting part is a first rivet column, and the pressing block is sleeved on the first rivet column and fixed through a hot riveting process.

[0007] Preferably, the support comprises a first mounting plate formed integrally and a second mounting plate arranged on the side of the first mounting plate, the first mounting plate is provided with a second rivet column for fixing the busbar, and the second mounting plate is used for fixing the flexible printed circuit board.

[0008] Preferably, the top corner of the end of the second mounting plate close to the connector is a rounded corner.

[0009] Preferably, the pressing block is plate-shaped.

[0010] Preferably, there is an elastic protective member between the pressure block and the flexible printed circuit board, and the top and bottom surfaces of the elastic protective member abut against the pressure block and the flexible printed circuit board, respectively.

[0011] Preferably, the elastic protective member is fixed to the bottom surface of the pressure block.

[0012] Preferably, the elastic protective element is bonded to the bottom surface of the pressure block.

[0013] Preferably, the elastic protective component is foam.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] Compared to existing structures, the integrated busbar of this invention also includes a pressure block. After the flexible printed circuit board is mounted on the bracket, the pressure block is fixed to the bracket through the cooperation of the first connecting part and the second connecting part. The bottom surface of the pressure block presses against the flexible printed circuit board, thus pressing and fixing the flexible printed circuit board. The second connecting part is located on the bracket near the connector end. This position is located on the outside of all the buffer arms of the flexible printed circuit board. Therefore, when the pressure block presses the flexible printed circuit board, the flexible printed circuit board on the bracket and the buffer arms near the connector are not easily pulled and broken.

[0016] The acquisition branch of the flexible printed circuit board is a buffer arm, which gives the acquisition section mobility. When the battery cell expands, the acquisition section can move with the busbar, reducing the impact of battery cell expansion on the connection between the busbar and the acquisition section. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the integrated busbar in the embodiment;

[0018] Figure 2 for Figure 1 A three-dimensional exploded view of the integrated busbar;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the pressing block;

[0020] Bracket 1; First mounting plate 11; Second hot riveting post 111; Second mounting plate 12; Second connecting part 13;

[0021] 2. Flexible printed circuit board; 21. Connector; 22. Buffer arm; 23. Acquisition unit;

[0022] Busbar 3;

[0023] Pressure block 4; First connecting part 41;

[0024] 5. Elastic protective component. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] An integrated busbar, see Figures 1-3 The system includes a support 1, a flexible printed circuit board 2 mounted on the support 1, and multiple busbars 3. The support 1 includes an integrally formed first mounting plate 11 and a second mounting plate 12 located beside the first mounting plate 11. The flexible printed circuit board 2 is fixed to the second mounting plate 12. The flexible printed circuit board 2 has a connector 21 and multiple buffer arms 22. The connector 21 is located at the end of the flexible printed circuit board 2 and is used for electrical connection with an external structure. Each buffer arm 22 has a collection part 23 at its free end. In this embodiment, the collection part 23 is preferably a nickel sheet. One collection part 23 is connected to one busbar 3. The collection branch of the flexible printed circuit board 2 is a buffer arm 22, which gives the collection part 23 mobility. The collection part 23 can move with the busbar 3 when the battery cell expands, reducing the impact of battery cell expansion on the connection between the busbar 3 and the collection part 23. The first mounting plate 11 is provided with a second hot riveting post 111. The busbar 3 is sleeved on the second hot riveting post 111 and fixed by the hot riveting process. When assembling with the battery module, the busbar 3 is welded to the battery cell to realize the series and parallel connection of the battery module cells.

[0027] Among them, the buffer arm 22 is an existing structure, and the buffer arm 22 can be S-shaped or Z-shaped, etc.

[0028] The top corner of the second mounting plate 12 near the connector 21 is rounded. In this way, when the connector 21 hangs down from the bracket 1, the rounded corner will not damage the components on the flexible printed circuit board 2 compared to the sharp corner, thus improving the service life of the components.

[0029] In this embodiment, the integrated busbar also includes a pressure block 4, which has a first connecting part 41 and a second connecting part 13 on the end of the bracket 1 near the connector 21. The pressure block 4 is fixed to the bracket 1 through the cooperation of the first connecting part 41 and the second connecting part 13, and the bottom surface of the pressure block 4 presses against the flexible printed circuit board 2. By setting the pressure block 4, which can press the flexible printed circuit board, the flexible printed circuit board 2 can be pressed and fixed. The second connecting part 13 is located on the end of the bracket 1 near the connector 21. This position is located on the outside of all the buffer arms 22 of the flexible printed circuit board 2. Therefore, when the pressure block 4 presses the flexible printed circuit board 2, the flexible printed circuit board 2 on the bracket 1 and the buffer arms 22 near the connector 21 are not easily pulled and broken.

[0030] In this embodiment, preferably, the first connecting part 41 is a through hole, the second connecting part 13 is a first hot riveting post, and the pressure block 4 is sleeved on the first hot riveting post and fixed by a hot riveting process. In the prior art, the bracket 1 is formed by injection molding or vacuum forming, and the second connecting part 13 is set as the first hot riveting post, which is convenient for processing. Since some existing busbars 3 are also fixed by a hot riveting process, the second connecting part 13 is set as the first hot riveting post and is also fixed to the pressure block 4 by a hot riveting process. This can be completed in the same process step without separate fixing, which improves assembly efficiency.

[0031] In this embodiment, preferably, the pressure block 4 is plate-shaped, with a flat bottom surface that can adhere to the surface of the flexible printed circuit board 2, thereby better pressing and fixing the flexible printed circuit board 2.

[0032] In this embodiment, there is an elastic protective member 5 between the pressure block 4 and the flexible printed circuit board 2. The top and bottom surfaces of the elastic protective member 5 abut against the pressure block 4 and the flexible printed circuit board 2, respectively. In this way, the rigid pressure block 4 does not contact the flexible printed circuit board 2, but the flexible printed circuit board 2 is contacted by the elastic soft protective member 5. This can protect the flexible printed circuit and reduce damage to the flexible printed circuit.

[0033] The elastic protective component 5 is fixed to the bottom surface of the pressure block 4, specifically by adhesive bonding. This structure is simple and easy to operate.

[0034] Among them, the elastic protective component 5 is foam.

[0035] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. 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. An integrated busbar, comprising a support, a flexible printed circuit board mounted on the support, and multiple busbars, wherein the flexible printed circuit board is provided with connectors and multiple buffer arms, the connectors are located at the ends of the flexible printed circuit board, and each buffer arm has a data collection part at its free end, with one data collection part connected to one busbar, characterized in that: It also includes a pressure block, which has a first connecting part and a second connecting part on the end of the bracket near the connector. The pressure block is fixed to the bracket by the cooperation of the first connecting part and the second connecting part, and the bottom surface of the pressure block presses against the flexible printed circuit board.

2. The integrated busbar according to claim 1, characterized in that: The first connecting part is a through hole, the second connecting part is a first hot riveting post, and the pressure block is sleeved on the first hot riveting post and fixed by the hot riveting process.

3. The integrated busbar according to claim 2, characterized in that: The bracket includes an integrally formed first mounting plate and a second mounting plate disposed next to the first mounting plate. The first mounting plate is provided with a second hot riveting post for fixing the busbar, and the second mounting plate is used to fix the flexible printed circuit board.

4. The integrated busbar according to claim 3, characterized in that: The top corner of the second mounting plate near the connector is rounded.

5. The integrated busbar according to claim 1, characterized in that: The pressing block is plate-shaped.

6. The integrated busbar according to claim 1, characterized in that: There is an elastic protective component between the pressure block and the flexible printed circuit board, and the top and bottom surfaces of the elastic protective component abut against the pressure block and the flexible printed circuit board, respectively.

7. The integrated busbar according to claim 6, characterized in that: The elastic protective component is fixed to the bottom surface of the pressure block.

8. The integrated busbar according to claim 7, characterized in that: The elastic protective component is bonded to the bottom surface of the pressure block.

9. The integrated busbar according to claim 6, characterized in that: The elastic protective component is made of foam.

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