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

Abstract

The utility model 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 utility model has the beneficial effects that: 1, the aluminum bar structure connected with the battery cell has a safety function, and the manufacturing cost is lower; 2, the structural design is relatively light and thin;

Description

Technical Field

[0001] This application relates to the field of electronic technology, specifically to a battery cell connection aluminum bar structure and battery pack with integrated fuse. Background Technology

[0002] With the rapid development of new energy vehicles, power batteries are essential components, and their safety remains a critical issue. Currently, integrated busbars (Cells Contact System, CCS) use flexible printed circuit boards (FPCs) to collect and transmit electrical signals such as voltage, current, and temperature, integrating fuses onto the FPC. This is because fuse functionality can be easily implemented on FPCs; however, FPCs are relatively expensive.

[0003] When using lower-cost flexible flat cables (FFC) or wire harnesses to collect and transmit electrical signals, fuses cannot be integrated, and the entire CCS lacks fuse functionality. This results in less effective thermal management of the battery pack, and the circuit cannot be promptly cut off by a fuse in case of abnormal current.

[0004] Therefore, there is an urgent need to develop a cell connection aluminum bar structure and battery pack with integrated insurance function. Utility Model Content

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

[0006] Therefore, the first objective of this application is to propose a battery cell connection aluminum bar structure with integrated insurance, which integrates insurance functions.

[0007] The second objective of this application is to propose a battery pack with an integrated fuse cell-connected aluminum bar structure.

[0008] To achieve the above objectives, this application discloses an integrated fuse cell connection aluminum bar structure, including 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 insulation part 4 connected below the first conductor part 2, and an aluminum bar 6 connected to the second conductor part.

[0009] In addition, the integrated fuse cell connection aluminum bar structure according to the above-mentioned technical solution of this application may also have the following additional technical features:

[0010] Optionally, the transmission unit 5 is one of an electronic wire harness, a ribbon cable, or a flexible flat cable.

[0011] Optionally, the safety unit 1 is a ceramic tube safety unit or an alloy wire safety unit.

[0012] Optionally, when the safety part 1 is a ceramic tube safety, the end of the second conductor part 3 connected to the safety 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 safety part 1 is also a riveted structure.

[0013] Optionally, the safety part 1 is an etched fine line.

[0014] Optionally, the first conductor portion 2 is a printed circuit board, and the second conductor portion 3 is a metal sheet; the printed circuit board is provided with a pad 8, which connects the fuse portion 1 and the transmission portion 5.

[0015] Optionally, the metal sheet is provided with a through-hole 9.

[0016] To achieve the above objectives, a second aspect of this application provides a battery pack with an integrated fuse cell-connecting aluminum bar structure, including the integrated fuse cell-connecting aluminum bar structure as provided in the first aspect of this application.

[0017] The advantages of this application are: 1. The aluminum bar structure connecting the battery cell can have a safety function and the manufacturing cost is low; 2. It is easy to design a thinner and lighter structure. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a battery cell connection aluminum bar structure with integrated fuse provided in one embodiment of this application;

[0019] Figure 2 This is a schematic diagram of a battery cell connection aluminum bar structure with integrated fuse provided in another embodiment of this application;

[0020] Figure 3 This is a perspective view of a battery cell connection aluminum bar structure with integrated fuse provided in one embodiment of this application;

[0021] Figure 4 This is a perspective view of a battery cell connection aluminum bar structure with integrated fuse provided in another embodiment of this application;

[0022] Figure 5 This is a partial perspective view of a battery cell connection aluminum bar structure with integrated fuse provided in another embodiment of this application.

[0023] Figure label:

[0024] 1-Fuse section, 2-First conductor section, 3-Second conductor section, 4-Insulation section, 5-Transmission section, 6-Aluminum bar, 8-Solder pad, 9-Through hole. Detailed Implementation

[0025] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or parts / elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0026] The following describes the integrated fuse cell connection aluminum bar structure of this application embodiment with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of a battery cell connection aluminum bar structure with integrated fuse provided in one embodiment of this application; Figure 2 This is a schematic diagram of a battery cell connection aluminum bar structure with integrated fuse provided in another embodiment of this application; Figure 3 This is a perspective view of a battery cell connection aluminum bar structure with integrated fuse provided in one embodiment of this application; Figure 4 This is a perspective view of a battery cell connection aluminum bar structure with integrated fuse provided in another embodiment of this application; Figure 5 This is a partial perspective view of a battery cell connection aluminum bar structure with integrated fuse provided in another embodiment of this application. Figure 1-5 As shown: The integrated fuse cell connection aluminum bar structure includes 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 insulation part 4 connected below the first conductor part 2, and an aluminum bar 6 connected to the second conductor part.

[0028] According to one embodiment of this application, the safety unit 1 is a ceramic tube safety unit or an alloy wire safety unit.

[0029] According to one embodiment of this application, when the safety part 1 is a ceramic tube safety, the second conductor part 3 is connected to the safety part 1 at one end with a riveted structure and the other end with a flat plane; the first conductor part 2 is also connected to the safety part 1 at one end with a riveted structure. Example 1

[0030] First, a special fuse is designed. One end of the fuse has a metal second conductor section 3 welded to an aluminum bar 6; the other end has a two-layer design: the upper layer is a metal first conductor section 2, and the lower layer is an insulating material section 4. The upper metal layer has a transmission section 5, such as a wire harness or FFC, welded to it, and the lower insulating material is in contact with the aluminum bar or integrated busbar. The middle area is the fuse area, where the fuse uses a traditional ceramic tube and alloy wire design.

[0031] Figure 1 , 3 This is a structural schematic diagram and a perspective view of this embodiment. Figure 1 , 3 As shown, a ceramic tube fuse is used. Both ends of this tube fuse are cylindrical conductive connection sections. The second conductor section 3 and the first conductor section 2 can be used as follows: Figure 3 The riveting structure shown provides a fastening connection, thereby achieving an electrical connection; the second conductor part 3 connected to the aluminum bar can be a flat plane, which facilitates connection and reduces the thickness of the structure.

[0032] The integrated fuse cell connection aluminum bar structure of this application can replace the original high-cost design using FPC, and use lower-cost wire harnesses or FFC as the carrier for collecting and transmitting electrical signals, so as to achieve the goal of unchanged function and reduced cost; and the structure is thin, which is conducive to the thin and light design of battery pack.

[0033] According to one embodiment of this application, the transmission unit 5 is one of an electronic wire harness, a ribbon cable, or a flexible flat cable.

[0034] Specifically, the transmission unit 5 is used to transmit electrical signals. Currently, conductor materials such as electronic wire harnesses, ribbon cables, or flexible flat cables (FFCs) can be used in the battery pack. Mass-produced or modularly produced transmission media can effectively reduce overall production costs.

[0035] According to one embodiment of this application, the safety part 1 is an etched fine line.

[0036] According to one embodiment of this application, the first conductor portion 2 is a printed circuit board, and the second conductor portion 3 is a metal sheet; the printed circuit board is provided with a pad 8, which connects the fuse portion 1 and the transmission portion 5.

[0037] According to one embodiment of this application, the metal sheet is provided with a through-hole 9. Example 2

[0038] The fuse unit 1 can use etched fine lines as fuses to function as fuses; this setting allows fuses to be manufactured simultaneously during the production of printed circuit boards, improving production efficiency and reducing costs.

[0039] Figure 2 , 4 Figures 5 and 6 are structural schematic diagrams and perspective views of this embodiment. Figure 2 , 4 As shown in Figure 5, a special fuse is designed. One end of the fuse is a metal sheet welded to an aluminum bar 6; the other end has a two-layer design, with a metal circuit board on top and an insulating part 4 made of insulating material on the bottom. The upper metal layer is welded to a wire harness or FFC, and the lower insulating material is in contact with the aluminum bar. The S-shaped area in the middle is the fuse area etched or die-cut by FPC. This design mainly emphasizes lightness and thinness, saving space.

[0040] Pad 8 is used for soldering wires and other components onto printed circuit boards. It features a dedicated soldering area that facilitates laser soldering, tin soldering, or superconducting wave soldering. To prevent detachment due to vibration or other external forces, adhesive can be applied to form a protective layer, ensuring a stable and reliable connection.

[0041] The purpose of providing a solder penetration hole 9 in the metal sheet is to facilitate solder penetration when the metal sheet is soldered to the aluminum bar, ensuring reliable soldering; and the hole can also release the gas generated during soldering, ensuring reliable soldering connection.

[0042] Based on the above embodiments, this invention also proposes a battery pack, including: an aluminum battery cell connection structure with integrated fuse as described in the above embodiments.

[0043] According to this application, a battery pack with an integrated fuse cell connection aluminum bar structure can replace the original high-cost design using FPC, and use a lower-cost wire harness or FFC as the carrier for collecting and transmitting electrical signals, achieving the goal of maintaining the function while reducing costs.

[0044] The above embodiments are preferred implementations of this application. In addition, this application can be implemented in other ways. Any obvious substitutions without departing from the concept of this application are within the protection scope of this application.

Claims

1. An integrated safety cell connection aluminum busbar structure, characterized by, The application relates to a fuse wire integrated busbar structure, which comprises the following parts: an insurance part (1), a first conductor part (2) connected with one end of the insurance part (1), a second conductor part (3) connected with the other end of the insurance part (1), a transmission part (5) connected above the first conductor part (2), an insulation part (4) connected below the first conductor part (2), and an aluminum bar (6) connected with the second conductor part. The transmission part (5) is one of an electronic wire harness, a flat cable and a flexible flat cable.

2. The integrated safety cell connection tab structure of claim 1, wherein: The insurance part (1) is a ceramic tube insurance or an alloy wire insurance.

3. The integrated safety cell connection tab structure of claim 1, wherein: When the insurance part (1) is a ceramic tube insurance, one end of the second conductor part (3) connected with the insurance part (1) is a riveting structure, and the other end is a flat plane; one end of the first conductor part (2) connected with the insurance part (1) is also a riveting structure.

4. The integrated safety cell connection tab structure of claim 3, wherein: The insurance part (1) is an etched fine line.

5. The integrated safety cell connection tab structure of claim 1, wherein: The first conductor part (2) is a printed circuit board, and the second conductor part (3) is a metal sheet; the printed circuit board is provided with a solder pad (8) connected with the insurance part (1) and the transmission part (5).

6. The integrated safety cell connection tab structure of claim 5, wherein: The metal sheet is provided with a tin penetrating hole (9).

7. The integrated safety cell connection tab structure of claim 6, wherein: The application further relates to a fuse wire integrated busbar structure comprising the fuse wire integrated busbar structure according to any one of claims 1-7.

8. A battery pack, characterized by: ​

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