Integrated busbar structure of battery connection system

Abstract

The utility model relates to a battery connection system, in particular to an integrated busbar structure of a battery connection system, which comprises a U-shaped flexible circuit board and a mica sheet support, bent nickel sheets extend out of two sides of the flexible circuit board, aluminum sheets are arranged on the sides of the nickel sheets, aluminum riveting holes are arranged on the aluminum sheets, and the mica sheet support is arranged on the aluminum riveting holes. The mica sheet support corresponding to the aluminum bar riveting hole is provided with a support first riveting hole, the U-shaped bottom of the flexible circuit board is provided with a circuit board riveting hole, and the mica sheet support corresponding to the circuit board riveting hole is provided with a support second riveting hole. Rivets are arranged in the aluminum bar rivet holes and the circuit board riveting holes and penetrate through the first support riveting holes and the second support riveting holes respectively, the aluminum bar piece and the flexible circuit board are riveted and fixed to the mica sheet support, and then the nickel sheet and the aluminum bar piece are welded into a whole.

Description

Technical Field

[0001] The utility model relates to a battery connection system, in particular to an integrated busbar structure of the battery connection system. Background Art

[0002] The integrated busbar structure of the traditional battery connection system includes a conductive aluminum busbar and a wiring harness. The wiring harness is welded to the conductive aluminum busbar, then installed on the support frame, and pressed together on the upper and lower surfaces of the support frame through an insulating film. However, pressing requires a corresponding mold, which increases the production cost. In addition, the wiring harness is wrapped by the insulating film on the upper and lower surfaces, and cannot effectively dissipate heat. The battery connection system is prone to overheating when in use. In addition, the wiring harness is cumbersome and the installation takes a long time. Utility Model Content

[0003] The utility model aims to provide an integrated busbar structure of a battery connection system with low manufacturing cost.

[0004] The integrated busbar structure of the battery connection system described in the utility model comprises a U-shaped flexible circuit board and a mica sheet bracket, wherein bent nickel sheets extend from both sides of the flexible circuit board, an aluminum bar sheet is provided on the side of the nickel sheet, an aluminum bar rivet hole is provided on the aluminum bar sheet, a first rivet hole of the bracket is provided on the mica sheet bracket corresponding to the aluminum bar rivet hole, a circuit board rivet hole is provided at the U-shaped bottom of the flexible circuit board, a second rivet hole of the bracket is provided on the mica sheet bracket corresponding to the circuit board rivet hole, rivets are loaded into the aluminum bar rivet holes and the circuit board rivet holes, respectively passing through the first rivet hole of the bracket and the second rivet hole of the bracket, the aluminum bar sheet and the flexible circuit board are riveted and fixed on the mica sheet bracket, and then the nickel sheet and the aluminum bar sheet are welded as a whole.

[0005] The integrated busbar structure of the battery connection system described in the utility model is configured to have a U-shaped flexible circuit board with a hollowed-out middle, so that the space occupied is smaller, the materials used are less, and the cost is lower. Since the aluminum bar sheet and the U-shaped flexible circuit board are respectively provided with aluminum bar rivet holes and circuit board riveting holes, and the mica sheet bracket is provided with corresponding bracket first rivet holes and bracket second rivet holes, it is only necessary to install rivets to fix the aluminum bar sheet and the U-shaped flexible circuit board respectively, without the need for matching corresponding molds and jigs, thereby reducing the production cost. In addition, since the flexible circuit board is exposed outside the mica sheet bracket, the heat dissipation effect is better, and the problem of overheating of the battery connection system during use is avoided. In addition, the U-shaped flexible circuit board is adopted, and no redundant wiring is required, so the installation is more convenient and time-saving. Finally, the nickel sheet and the aluminum bar sheet are welded as a whole, which can prevent the nickel sheet and the aluminum bar sheet from being touched during riveting, so that the welding points between them are prevented from falling off, thereby improving the yield rate of the product.

[0006] As a preferred solution of the utility model, a reinforcing plate protruding outward is provided at the U-shaped bottom of the flexible circuit board, the circuit board riveting holes are provided on both sides of the reinforcing plate, and the mica sheet bracket matching the circuit board riveting holes on both sides of the reinforcing plate is provided with two connecting ears, and the second riveting hole of the bracket is provided on the two connecting ears.

[0007] As a preferred solution of the utility model, a connector is provided on the reinforcing plate of the flexible circuit board, and a connector avoidance window is provided between two connecting ears of the mica sheet bracket matched with the connector.

[0008] As a preferred solution of the utility model, a temperature sensor is provided on the flexible circuit board, and a temperature sensor avoidance window is provided on the mica sheet bracket matched with the temperature sensor.

[0009] As a preferred solution of the utility model, a through hole for welding the aluminum sheet and the battery cell electrode is provided on the mica sheet bracket.

[0010] As a preferred solution of the utility model, an exhaust hole for exhausting the power core expansion valve is provided on the mica sheet bracket.

[0011] As a preferred solution of the utility model, double-sided adhesive tapes are provided on both sides of the flexible circuit board for fixing with the mica sheet bracket. The double-sided adhesive tapes can better stick and fix the two sides of the flexible circuit board with the mica sheet bracket, further increasing the stability of the flexible circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an exploded schematic diagram of the integrated busbar structure of the battery connection system of the utility model;

[0013] Figure 2 A schematic diagram of an integrated busbar structure of a battery connection system of the utility model;

[0014] Figure 3 This is another schematic diagram of the integrated busbar structure of the battery connection system of the present invention. DETAILED DESCRIPTION

[0015] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] In the present utility model, it needs to be explained that if there are directional indications involved in the embodiments of the present utility model (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0017] An integrated busbar structure for a battery connection system, such as Figure 1 - Figure 3 As shown, it includes a U-shaped flexible circuit board 1 and a mica sheet bracket 2, wherein bent nickel sheets 3 extend from both sides of the flexible circuit board, an aluminum sheet 5 is provided on the side of the nickel sheet, an aluminum sheet rivet hole 6 is provided on the aluminum sheet, a first bracket rivet hole 7 is provided on the mica sheet bracket corresponding to the aluminum sheet rivet hole, a circuit board rivet hole 8 is provided at the U-shaped bottom of the flexible circuit board, a second bracket rivet hole 9 is provided on the mica sheet bracket corresponding to the circuit board rivet hole, rivets are loaded into the aluminum sheet rivet holes and the circuit board rivet holes, respectively passing through the first bracket rivet holes and the second bracket rivet holes, the aluminum sheet and the flexible circuit board are riveted and fixed on the mica sheet bracket, and then the nickel sheet and the aluminum sheet are welded as a whole.

[0018] By setting the flexible circuit board to a U-shape with a hollow middle, it occupies less space, uses less material and has a lower cost; since the aluminum bar sheet and the U-shaped flexible circuit board are respectively provided with aluminum bar rivet holes and circuit board rivet holes, and the mica sheet bracket is provided with corresponding bracket first rivet holes and bracket second rivet holes, it is only necessary to install rivets to fix the aluminum bar sheet and the U-shaped flexible circuit board respectively, without the need for matching corresponding molds and jigs, thereby reducing the production cost; in addition, since the flexible circuit board is exposed outside the mica sheet bracket, the heat dissipation effect is better, avoiding the problem of overheating of the battery connection system during use; in addition, the U-shaped flexible circuit board does not require redundant wiring, making installation more convenient and time-saving; and the nickel sheet and the aluminum bar sheet are welded as a whole at the end, which can prevent the nickel sheet and the aluminum bar sheet from being touched during riveting, causing the welding points between them to fall off, thereby improving the product yield.

[0019] Double-sided adhesive tape 19 is provided on both sides of the flexible circuit board for fixing with the mica sheet support. The double-sided adhesive tape can better adhere and fix the two sides of the flexible circuit board with the mica sheet support, thereby further increasing the stability of the flexible circuit board.

[0020] The mica sheet support is provided with a through hole 17 for welding the aluminum sheet and the battery core electrode. Through the through hole 17, it is convenient to weld the aluminum sheet and the battery core electrode with a laser welder.

[0021] The mica sheet support is provided with an exhaust hole 18 for exhausting the battery expansion valve. The exhaust hole 18 can facilitate the exhaust of the battery expansion valve, and prevent the mica sheet support from sealing and blocking the exhaust of the battery expansion valve, thereby improving the safety of the battery connection system.

[0022] A reinforcing plate 11 protruding outward is provided at the U-shaped bottom of the flexible circuit board, and the circuit board riveting holes are provided on both sides of the reinforcing plate. The mica sheet bracket matching the circuit board riveting holes on both sides of the reinforcing plate is provided with two connecting ears 12, and the second riveting hole of the bracket is provided on the two connecting ears.

[0023] A connector 13 is provided on the reinforcing plate of the flexible circuit board, and a connector avoidance window 14 is provided between two connecting ears of the mica sheet bracket matched with the connector.

[0024] A temperature sensor 15 is provided on the flexible circuit board, and a temperature sensor avoidance window 16 is provided on the mica sheet support that cooperates with the temperature sensor. The temperature sensor avoidance window 16 on the mica sheet support is more conducive to the temperature sensor monitoring the temperature.

[0025] The above embodiments are only used to illustrate the detailed scheme of the utility model. The utility model is not limited to the above detailed scheme, that is, it does not mean that the utility model must rely on the above detailed scheme to be implemented. Those skilled in the art should understand that any improvement to the utility model, equivalent replacement of various raw materials of the utility model product, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the utility model.

Claims

1. An integrated busbar structure of a battery connection system, characterized in that: The invention comprises a U-shaped flexible circuit board (1) and a mica sheet bracket (2), wherein bent nickel sheets (3) extend from both sides of the flexible circuit board, an aluminum sheet (5) is provided on the side of the nickel sheet, an aluminum sheet rivet hole (6) is provided on the aluminum sheet, a first bracket rivet hole (7) is provided on the mica sheet bracket corresponding to the aluminum sheet rivet hole, a circuit board rivet hole (8) is provided on the U-shaped bottom of the flexible circuit board, a second bracket rivet hole (9) is provided on the mica sheet bracket corresponding to the circuit board rivet hole, rivets are inserted into the aluminum sheet rivet hole and the circuit board rivet hole and pass through the first bracket rivet hole and the second bracket rivet hole respectively, the aluminum sheet and the flexible circuit board are riveted and fixed on the mica sheet bracket, and then the nickel sheet and the aluminum sheet are welded into a whole.

2. The integrated busbar structure of the battery connection system according to claim 1, characterized in that: A reinforcing plate (11) protruding outward is provided at the U-shaped bottom of the flexible circuit board, the circuit board riveting holes are provided on both sides of the reinforcing plate, a mica sheet bracket matching the circuit board riveting holes on both sides of the reinforcing plate is provided with two connecting ears (12), and the second riveting holes of the bracket are provided on the two connecting ears.

3. The integrated busbar structure of the battery connection system according to claim 2, characterized in that: A connector (13) is provided on the reinforcing plate of the flexible circuit board, and a connector avoidance window (14) is provided between two connecting ears of a mica sheet support matched with the connector.

4. The integrated busbar structure of the battery connection system according to any one of claims 1 to 3, characterized in that: A temperature sensor (15) is provided on the flexible circuit board, and a temperature sensor avoidance window (16) is provided on the mica sheet support matched with the temperature sensor.

5. The integrated busbar structure of the battery connection system according to any one of claims 1 to 3, characterized in that: The mica sheet support is provided with a through hole (17) for welding the aluminum sheet to the battery cell electrode.

6. The integrated busbar structure of the battery connection system according to any one of claims 1 to 3, characterized in that: An exhaust hole (18) for exhausting the power core expansion valve is provided on the mica sheet support.

7. The integrated busbar structure of the battery connection system according to any one of claims 1 to 3, characterized in that: Double-sided adhesive tape (19) is provided on both sides of the flexible circuit board for fixing to the mica sheet bracket.

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