Integrated busbar with fuse and battery pack

Abstract

The invention relates to an integrated busbar with a fuse and a battery pack. The integrated busbar with the fuse comprises an integrated busbar 1, a plurality of aluminum bars 2 connected with the integrated busbar 1, a metal substrate type circuit board 3 with one end electrically connected with the aluminum bars 2, and a transmission part 4 electrically connected with the other end of the metal substrate type circuit board 3, wherein the metal substrate type circuit board 3 comprises a first bonding pad 31 and a second bonding pad 32, the first bonding pad 31 is connected with the aluminum bar 2, the second bonding pad 32 is connected with the transmission part 4, and the first bonding pad 31 is connected with the second bonding pad 32 through a safety part 33. The beneficial effects of the invention are that: 1, the electronic wire harness, the flat cable or the FFC is used as a base material to transmit electric signals, so that the material cost is reduced; 2, full-automatic unmanned processing can be adopted for welding the metal substrate and the aluminum bar, so that the manufacturing time cost is reduced; and 3, the fuse is integrated on the metal substrate type circuit, so that the whole CCS has a safety function, and safety guarantee is provided when the battery pack is subjected to thermal runaway.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to an integrated busbar and battery pack with 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. In the field of manufacturing cells contact system (CCS) of new energy battery packs, CCS with wiring harness, cable or FFC as the base material in the industry do not have fuse function. When CCS products do not have fuse function, the product will have short circuit or overcurrent. Because there is no fuse in the line, the line cannot be cut off in time for safety protection. The application of CCS products without fuse function is limited, and they are mainly used in commercial vehicles or energy storage products with low requirements for overcurrent and short circuit.

[0003] Therefore, it is urgent to develop an integrated busbar and battery pack with integrated insurance function. Summary of the invention

[0004] This application aims to solve the above technical problems.

[0005] To this end, the first objective of the present application is to provide an integrated busbar with insurance, which has an integrated insurance function.

[0006] The second objective of the present application is to provide a battery pack with an integrated busbar with insurance.

[0007] To achieve the above-mentioned purpose, an embodiment of the present application discloses an integrated busbar with insurance, comprising an integrated busbar 1, a plurality of aluminum bars 2 connected to the integrated busbar 1, a metal substrate type circuit board 3 having one end electrically connected to the aluminum bar 2, and a transmission part 4 electrically connected to the other end of the metal substrate type circuit board 3; wherein the metal substrate type circuit board 3 comprises a first solder pad 31 connected to the aluminum bar 2, and a second solder pad 32 connected to the transmission part 4, and the first solder pad 31 and the second solder pad 32 are connected via a insurance part 33.

[0008] In addition, the integrated busbar with insurance according to the above technical solution of the present application may also have the following additional technical features: Optionally, the transmission part 4 is one of an electronic wiring harness, a wiring harness or a flexible flat cable.

[0009] Optionally, the insurance part 33 is a fuse or an etched thin circuit.

[0010] Optionally, a glue protection layer is provided outside the soldering point position of the first soldering pad 31 .

[0011] Optionally, the metal substrate type circuit board 3 further includes a positioning hole 34 .

[0012] To achieve the above-mentioned purpose, a second aspect of the present application proposes a battery pack with an integrated busbar with insurance, including an integrated busbar with insurance as proposed in the first aspect of the present application.

[0013] The beneficial effects of the present application are: 1. Using electronic wiring harnesses, flat cables or FFC as the substrate to transmit electrical signals reduces material costs; 2. The welding of metal substrate type circuit boards and aluminum bars can be done by fully automatic unmanned processing, reducing manufacturing labor costs; 3. Integrating the fuse into the metal substrate type circuit allows the entire CCS to have a fuse function, which can effectively cut off the current and the transmission of electrical signals in a timely and effective manner when the battery pack has thermal runaway, short circuit or overcurrent, providing safety protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of an integrated busbar with insurance provided by an embodiment of the present application; Figure 2 It is a structural schematic diagram of a metal substrate type circuit board provided by an embodiment of the present application; Figure 3 It is a structural schematic diagram of a metal substrate type circuit board provided in another embodiment of the present application.

[0015] Reference numerals: 1-integrated busbar, 2-aluminum bar, 3-metal substrate type circuit board, 31-first solder pad, 32-second solder pad, 33-insurance part, 34-positioning hole, 4-transmission part. DETAILED DESCRIPTION

[0016] 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.

[0017] The integrated busbar with insurance according to an embodiment of the present application is described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the structure of an integrated busbar with insurance provided by an embodiment of the present application; Figure 2 It is a structural schematic diagram of a metal substrate type circuit board provided by an embodiment of the present application; Figure 3 is a schematic diagram of the structure of a metal substrate type circuit board provided by another embodiment of the present application, such as Figure 1-3As shown: the integrated busbar with insurance includes an integrated busbar 1, a plurality of aluminum bars 2 connected to the integrated busbar 1, a metal substrate type circuit board 3 having one end electrically connected to the aluminum bar 2, and a transmission part 4 electrically connected to the other end of the metal substrate type circuit board 3; wherein the metal substrate type circuit board 3 includes a first solder pad 31 connected to the aluminum bar 2, and a second solder pad 32 connected to the transmission part 4, and the first solder pad 31 and the second solder pad 32 are connected via a insurance part 33.

[0019] Specifically, the transmission part 4 is used to transmit electrical signals; the metal substrate type circuit board 3 is used as a transfer carrier, and the insurance part 33 is integrated on the metal substrate type circuit board 3 to play the role of insurance. The transmission line of the electrical signal - the transmission part 4 and the metal substrate type circuit board 3 are welded by soldering, laser welding or superconducting wave welding, and the metal substrate type circuit board 3 and the aluminum bar 2 can be welded by soldering, laser welding or superconducting wave welding.

[0020] It should be noted that if Figure 2-3 As shown, the conductive layer and non-metallic layer in some areas of the metal substrate type circuit board 3 can also be removed, leaving the metal base layer (the gray part in the figure) to facilitate welding.

[0021] According to the integrated busbar with insurance of the present application, the welding of the metal substrate type circuit board and the aluminum bus can be carried out by fully automatic unmanned processing, which reduces the manufacturing labor cost; the fuse is integrated into the metal substrate type circuit, so that the entire CCS has a insurance function, when the battery pack has thermal runaway, short circuit or overcurrent, it can timely and effectively cut off the current and the transmission of electrical signals, providing safety protection.

[0022] According to an embodiment of the present application, the transmission part 4 is one of an electronic wiring harness, a flat cable or a flexible flat cable.

[0023] Specifically, the transmission part 4 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.

[0024] According to an embodiment of the present application, the insurance portion 33 is a fuse or an etched thin circuit.

[0025] Specifically, the metal substrate type circuit board 3 can use etched fine lines as fuses to play the role of fuses; this setting can manufacture fuses at the same time when producing metal substrate type circuit boards, improve production efficiency and reduce costs. Fuses can also be welded.

[0026] According to an embodiment of the present application, a glue protection layer is provided outside the soldering point position of the first soldering pad 31 .

[0027] Specifically, soldering, laser welding or superconducting wave welding is performed on the first pad 31. In order to prevent it from falling off due to external forces such as vibration, glue can be applied to form a protective layer, thereby ensuring a stable and reliable connection.

[0028] According to an embodiment of the present application, the metal substrate type circuit board 3 further includes a positioning hole 34 .

[0029] Specifically, positioning holes are processed on the metal substrate to facilitate positioning during product assembly.

[0030] According to a battery pack with an integrated busbar with insurance in the present application, an electronic wiring harness, a flat cable or an FFC is used as a substrate to transmit electrical signals, thereby reducing material costs. The welding of the metal substrate type circuit board and the aluminum bus can be performed by fully automatic unmanned processing, thereby reducing manufacturing labor costs. The fuse is integrated into the metal substrate type circuit, so that the entire CCS has an insurance function, and when the battery pack has thermal runaway, short circuit or overcurrent, the current can be cut off in a timely and effective manner, and the transmission of electrical signals can be provided with safety protection.

[0031] 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. An integrated busbar with insurance, characterized in that: include: An integrated busbar (1), a plurality of aluminum bars (2) connected to the integrated busbar (1), a metal substrate type circuit board (3) having one end electrically connected to the aluminum bar (2), and a transmission part (4) electrically connected to the other end of the metal substrate type circuit board (3); The metal substrate type circuit board (3) comprises a first solder pad (31) connected to the aluminum bar (2), and a second solder pad (32) connected to the transmission part (4), and the first solder pad (31) and the second solder pad (32) are connected via a safety part (33).

2. The integrated busbar with insurance according to claim 1, characterized in that: The transmission part (4) is one of an electronic wiring harness, a wiring harness or a flexible flat cable.

3. The integrated busbar with insurance according to claim 1, characterized in that: The insurance part (33) is a fuse or an etched thin circuit.

4. The integrated busbar with insurance according to claim 1, characterized in that: A glue protection layer is provided outside the soldering point position of the first soldering pad (31).

5. The integrated busbar with insurance according to claim 1, characterized in that: The metal substrate type circuit board (3) further comprises a positioning hole (34).

6. 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 5.

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