Battery cell connection aluminum bar structure integrated with fuse and battery pack

Abstract

The invention discloses a battery cell connecting aluminum bar structure integrated with a fuse and a battery pack. The integrated fuse cell connection aluminum bar structure comprises a fuse part (1), a first conductor part (2) connected with one end of the fuse part (1), a second conductor part (3) connected with the other end of the fuse part (1), a transmission part (5) connected above the first conductor part (2), and an insulation part (4) connected below the first conductor part (2), and an aluminum bar (6) connected to the second conductor part. The transmission part (5) is one of an electronic wire harness, a flat cable or a flexible flat cable. The fuse part (1) is a ceramic tube fuse or an alloy wire fuse or an etched thin circuit. The invention has the following beneficial effects: 1, the aluminum bar structure connected with the battery cell has a safety function, and the manufacturing cost is low; 2, the structural design is relatively light and thin;

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to a battery cell connection aluminum bar structure and a battery pack with integrated insurance. Background Art

[0002] At present, new energy vehicles are developing rapidly, and power batteries are inevitably used in new energy vehicles. At present, the safety of power batteries is an important issue. The current integrated busbar (Cells Contact System, referred to as CCS) uses a flexible printed circuit (Flexible Printed Circuit, referred to as FPC) to collect and transmit electrical signals such as voltage, current, and temperature, and integrates fuses on FPC. Because the fuse function can be easily realized on FPC, but the cost of FPC is relatively high.

[0003] When a low-cost flexible flat cable (FFC) or wiring harness is used to collect and transmit electrical signals, fuses cannot be integrated, and the entire CCS has no fuse function. The thermal management of the battery pack lacks safety protection, and when the current is abnormal, the circuit cannot be cut off in time.

[0004] Therefore, it is urgent to develop a battery cell connection aluminum bar structure and battery pack with integrated insurance function. Summary of the invention

[0005] This application aims to solve the above technical problems.

[0006] To this end, the first purpose of the present application is to propose a battery cell connection aluminum bar structure with integrated insurance function.

[0007] The second objective of the present application is to provide a battery pack with an integrated fuse and an aluminum bar structure for connecting the battery cells.

[0008] To achieve the above-mentioned objectives, an embodiment of the present application discloses an aluminum bar structure for connecting a battery cell with an integrated fuse, comprising a fuse part 1, a first conductor part 2 connected to one end of the fuse part 1, a second conductor part 3 connected to the other end of the fuse part 1, a transmission part 5 connected above the first conductor part 2, an insulating part 4 connected below the first conductor part 2, and an aluminum bar 6 connected to the second conductor part.

[0009] In addition, the battery cell connection aluminum bar structure with integrated insurance according to the above technical solution of the present application may also have the following additional technical features: Optionally, the transmission part 5 is one of an electronic wiring harness, a wiring harness or a flexible flat cable.

[0010] Optionally, the insurance part 1 is a ceramic tube insurance or an alloy wire insurance.

[0011] Optionally, when the insurance part 1 is a ceramic tube insurance, one end of the second conductor part 3 connected to the insurance part 1 is a riveted structure, and the other end is a flat surface; the end of the first conductor part 2 connected to the insurance part 1 is also a riveted structure.

[0012] Optionally, the insurance portion 1 is an etched fine line.

[0013] Optionally, the first conductor part 2 is a printed circuit board, and the second conductor part 3 is a metal sheet; a pad 8 is provided on the printed circuit board, and the pad 8 is connected to the insurance part 1 and the transmission part 5 .

[0014] Optionally, a tin-through hole 9 is provided in the metal sheet.

[0015] To achieve the above-mentioned purpose, the second embodiment of the present application proposes a battery pack with an integrated fuse and an aluminum bar structure for connecting the battery cells, including the battery pack with an integrated fuse and an aluminum bar structure for connecting the battery cells as proposed in the first embodiment of the present application.

[0016] The beneficial effects of the present application are: 1. The aluminum bar structure connecting the battery cells can have a safety function and has a low manufacturing cost; 2. It is convenient to design the structure to be lighter and thinner. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a battery cell connection aluminum bar structure with integrated insurance provided by an embodiment of the present application; Figure 2 It is a structural schematic diagram of a battery cell connected to an aluminum bar structure with integrated insurance provided by another embodiment of the present application; Figure 3 It is a three-dimensional diagram of an aluminum bar structure for connecting a battery cell with an integrated fuse provided by an embodiment of the present application; Figure 4 It is a three-dimensional diagram of a battery cell connection aluminum bar structure with integrated insurance provided by another embodiment of the present application; Figure 5 It is a partial stereoscopic diagram of an aluminum bar structure for connecting a battery cell with an integrated fuse provided in another embodiment of the present application.

[0018] Reference numerals: 1-insurance part, 2-first conductor part, 3-second conductor part, 4-insulation part, 5-transmission part, 6-aluminum bar, 8-soldering pad, 9-tin-through hole. DETAILED DESCRIPTION

[0019] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or components / elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0020] The following describes the aluminum bar structure of the battery cell connection with integrated insurance in an embodiment of the present application in conjunction with the accompanying drawings.

[0021] Figure 1 This is a schematic structural diagram of a battery cell connection aluminum bar structure with integrated insurance provided by an embodiment of the present application; Figure 2 It is a structural schematic diagram of a battery cell connected to an aluminum bar structure with integrated insurance provided by another embodiment of the present application; Figure 3 It is a three-dimensional diagram of an aluminum bar structure for connecting a battery cell with an integrated fuse provided by an embodiment of the present application; Figure 4 It is a three-dimensional diagram of a battery cell connection aluminum bar structure with integrated insurance provided by another embodiment of the present application; Figure 5 FIG. 1 is a partial perspective view of an aluminum bar structure for connecting a battery cell with an integrated fuse provided by another embodiment of the present application. Figure 1-5 As shown: the integrated insurance battery cell connection aluminum bar structure includes a insurance part 1, a first conductor part 2 connected to one end of the insurance part 1, a second conductor part 3 connected to the other end of the insurance part 1, a transmission part 5 connected above the first conductor part 2, an insulating part 4 connected below the first conductor part 2, and an aluminum bar 6 connected to the second conductor part.

[0022] According to one embodiment of the present application, the fuse part 1 is a ceramic tube fuse or an alloy wire fuse.

[0023] According to one embodiment of the present application, when the insurance part 1 is a ceramic tube insurance, one end of the second conductor part 3 connected to the insurance part 1 is a riveted structure, and the other end is a flat plane; the end of the first conductor part 2 connected to the insurance part 1 is also a riveted structure. Example 1

[0024] First, a special fuse is designed. One end of the fuse is a metal second conductor part 3 welded with an aluminum bar 6; the other end is a two-layer design, the upper layer is a metal first conductor part 2, the lower layer is an insulating part 4 of an insulating material, the upper metal is welded to a transmission part 5 such as a wiring harness or FFC, and the lower insulating material is in contact with the aluminum bar or integrated busbar. The middle area is the fuse area, and the fuse in this area adopts the traditional ceramic tube and alloy wire design.

[0025] Figure 1 , 3 Schematic diagram and stereogram of the structure of this embodiment. Figure 1 ,3 As shown, a ceramic tube fuse is used. Both ends of the tube fuse are cylindrical conductive connecting parts. The second conductor part 3 and the first conductor part 2 can be used as shown in FIG. Figure 3 The riveted structure shown is connected securely, thereby achieving electrical connection; the second conductor part 3 can be connected to the aluminum bar in a flat surface, which is convenient for connection and can reduce the thickness of the structure.

[0026] The battery cell connection aluminum bar structure with integrated insurance according to the present application can replace the original high-cost design using FPC, and use lower-cost wiring harnesses or FFC as carriers for collecting and transmitting electrical signals, thereby achieving the purpose of unchanged functions and reduced costs; and the structure has a small thickness, which is conducive to the light and thin design of the battery pack.

[0027] According to an embodiment of the present application, the transmission part 5 is one of an electronic wiring harness, a flat cable or a flexible flat cable.

[0028] Specifically, the transmission part 5 is used to transmit electrical signals. Currently, the battery pack can use conductor materials such as electronic wiring harnesses, flat cables or flexible flat cables (FFC). Mass production or modular production of transmission media can effectively reduce the overall production cost.

[0029] According to an embodiment of the present application, the insurance portion 1 is an etched fine line.

[0030] According to an embodiment of the present application, the first conductor part 2 is a printed circuit board, and the second conductor part 3 is a metal sheet; a pad 8 is provided on the printed circuit board, and the pad 8 is connected to the insurance part 1 and the transmission part 5 .

[0031] According to an embodiment of the present application, a tin-through hole 9 is provided in the metal sheet. Example 2

[0032] The insurance part 1 can use etched thin lines as fuses to play the function of fuses; this setting can manufacture fuses at the same time when producing printed circuit boards, thereby improving production efficiency and reducing costs.

[0033] Figure 2 , 4 , 5 is a schematic diagram and a three-dimensional diagram of the structure of this embodiment. Figure 2 , 4 As shown in FIG. 5 , a special fuse is first designed. One end of the fuse is a metal sheet welded to an aluminum bar 6; the other end is a two-layer design, the upper layer is a metal circuit board, and the lower layer is an insulating part 4 of an insulating material. The upper metal is welded to a wire harness or FFC, and the lower insulating material is in contact with the aluminum bar. The middle S-shaped area is the fuse area etched or die-cut by the FPC. This design mainly highlights lightness and thinness, saving space.

[0034] The pad 8 is used to weld wires on the printed circuit board, and a dedicated welding area is designed to facilitate laser welding, soldering or superconducting wave welding. In order to prevent it from falling off due to external forces such as vibration, glue can also be applied to form a protective layer to ensure stable and reliable connection.

[0035] The purpose of providing the tin-penetrating hole 9 in the metal sheet is to facilitate the penetration of solder when the metal sheet is welded to the aluminum bar, thereby ensuring reliable welding; and the hole can also discharge the gas generated during welding, thereby ensuring reliable welding connection.

[0036] Based on the above embodiments, an embodiment of the present invention further proposes a battery pack, including: a cell connection aluminum bar structure with integrated insurance as in the above embodiments.

[0037] A battery pack with an aluminum bar structure and an integrated fuse for connecting the battery cells according to the present application can replace the original high-cost design using FPC, and use a lower-cost wiring harness or FFC as a carrier for collecting and transmitting electrical signals, thereby achieving the purpose of maintaining the same function and reducing costs.

[0038] The above embodiments are preferred implementation schemes of the present application. In addition, the present application may also be implemented in other ways. Any obvious replacement without departing from the concept of the present application is within the protection scope of the present application.

Claims

1. A battery cell connection aluminum bar structure with integrated insurance, characterized in that: include: A safety part (1), a first conductor part (2) connected to one end of the safety part (1), a second conductor part (3) connected to the other end of the safety part (1), a transmission part (5) connected above the first conductor part (2), an insulating part (4) connected below the first conductor part (2), and an aluminum bar (6) connected to the second conductor part.

2. The battery cell connection aluminum bar structure with integrated insurance according to claim 1, characterized in that: The transmission part (5) is one of an electronic wiring harness, a wiring harness or a flexible flat cable.

3. The battery cell connection aluminum bar structure with integrated insurance according to claim 1, characterized in that: The insurance part (1) is a ceramic tube insurance or an alloy wire insurance.

4. The battery cell connection aluminum bar structure with integrated insurance according to claim 3, characterized in that: When the insurance part (1) is a ceramic tube insurance, one end of the second conductor part (3) connected to the insurance part (1) is a riveted structure, and the other end is a flat surface; the end of the first conductor part (2) connected to the insurance part (1) is also a riveted structure.

5. The battery cell connection aluminum bar structure with integrated insurance according to claim 1, characterized in that: The insurance part (1) is an etched fine circuit.

6. The battery cell connection aluminum bar structure with integrated insurance according to claim 5, characterized in that: The first conductor part (2) is a printed circuit board, and the second conductor part (3) is a metal sheet; a soldering pad (8) is provided on the printed circuit board, and the soldering pad (8) is connected to the insurance part (1) and the transmission part (5).

7. The battery cell connection aluminum bar structure with integrated insurance according to claim 6, characterized in that: The metal sheet is provided with a tin-through hole (9).

8. A battery pack, characterized in that: It comprises a wiring harness integrated busbar structure with a fuse as described in any one of claims 1 to 7.

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