PET film pressing CCS assembly

Abstract

The utility model discloses a PET film press fit CCS assembly, comprising a PET film, the upper surface of the PET film is provided with an adhesive, the upper surface of the PET film is adhered with two rows of aluminum bar sheets, the upper surface of the PET film between the two rows of aluminum bar sheets is adhered with a flexible circuit board, two sides of the flexible circuit board extend to form nickel sheets, the nickel sheets at two sides of the flexible circuit board are respectively welded on the two rows of aluminum bar sheets, and the two rows of aluminum bar sheets are welded on the flexible circuit board. And the flexible circuit board welded by the nickel sheet and the aluminum sheet are pressed, adhered and fixed on the PET film, and the upper surface of the PET film is provided with a window corresponding to the bending groove of the aluminum sheet. The flexible circuit board welded by the nickel sheet and the aluminum sheet are pressed, adhered and fixed on the PET film, and the window corresponding to the bending groove of the aluminum sheet is formed in the PET film through pressing, so that the PET film can be prevented from being torn due to thermal expansion and cold contraction of the bending groove of the aluminum sheet, and the risk of product damage is further avoided.

Description

Technical Field

[0001] The utility model relates to an electric core connection system, in particular to a PET film pressed CCS component. Background Art

[0002] Due to the characteristics of battery cells, the temperature and charge and discharge current of new energy power and automotive batteries must be monitored in real time throughout the entire operation process. The CCS (cell connection system) component also collects temperature and current signals while connecting the battery cells.

[0003] Traditional CCS components mainly include circuit boards and aluminum sheets, which are both attached to insulating films and protected by insulating films. Since there is a bending groove in the middle of the aluminum sheet, the deformation caused by the bending groove can prevent the aluminum sheet from being disconnected from the pole of the battery cell due to thermal expansion and contraction. However, traditional CCS components use insulating films for protection and support. When the bending groove of the aluminum sheet is deformed, the insulating film is easily torn, causing damage to the product. Utility Model Content

[0004] The utility model aims to provide a PET film pressed CCS component which can prevent the PET film from being torn due to thermal expansion and contraction of the bending groove of the aluminum bar, so as to avoid the risk of product damage.

[0005] The utility model discloses a PET film pressed CCS component, comprising a PET film, an adhesive being provided on the upper surface of the PET film, two rows of aluminum tabs being adhered to the upper surface of the PET film, a flexible circuit board being adhered to the upper surface of the PET film between the two rows of aluminum tabs, nickel tabs extending from both sides of the flexible circuit board, the nickel tabs on both sides of the flexible circuit board being respectively welded to the two rows of aluminum tabs, the flexible circuit board and the aluminum tabs welded by the nickel tabs being pressed, adhered and fixed to the PET film, and a window corresponding to the bending groove of the aluminum tab is opened on the PET film.

[0006] The PET film pressed CCS component described in the utility model is achieved by pressing and bonding the flexible circuit board and the aluminum bar sheet welded with nickel sheets to fix them on the PET film, and a window corresponding to the bending groove of the aluminum bar sheet is opened on the PET film by pressing, thereby preventing the bending groove of the aluminum bar sheet from expanding and contracting and tearing the PET film, thereby avoiding the risk of product damage; in addition, since adhesive glue is pre-provided on the upper surface of the PET film, the aluminum bar sheet and the flexible circuit board can be positioned on the PET film in the early stage of pressing, and the operation is more convenient; in addition, the nickel sheets on both sides of the flexible circuit board are respectively welded to two rows of aluminum bar sheets to form a whole, and then fixed on the PET film by pressing, the flexible circuit board and the aluminum bar sheet are not easy to shift, the pressing effect is better, and the yield rate is higher.

[0007] As a preferred solution of the present utility model, the adhesive is AD adhesive.

[0008] As a preferred solution of the utility model, exhaust holes penetrating the upper and lower surfaces of the PET film are provided on the PET film between the two rows of aluminum sheets.

[0009] As a preferred solution of the present invention, the flexible circuit board is a U-shaped flexible circuit board.

[0010] As a preferred solution of the utility model, a first thermistor and a second thermistor are respectively installed on the flexible circuit board.

[0011] As a preferred solution of the utility model, a thermistor window corresponding to the second thermistor is formed by lamination on the PET film.

[0012] As a preferred solution of the utility model, a glass fiber reinforcement plate and an aluminum sheet reinforcement plate are provided on the flexible circuit board, a connector is provided on the flexible circuit board on the glass fiber reinforcement plate, and the aluminum sheet reinforcement plates are respectively arranged on the back of the first thermistor and the second thermistor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the back side of the PET film pressed CCS component of the utility model;

[0014] Figure 2 This is a front view schematic diagram of the PET film pressed CCS component of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the flexible circuit board of the utility model. DETAILED DESCRIPTION

[0016] 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.

[0017] A PET film pressed CCS component, such as Figure 1-Figure 3As shown, it includes a PET film 1, an adhesive is provided on the upper surface of the PET film, two rows of aluminum sheets 2 are adhered to the upper surface of the PET film, a flexible circuit board 3 is adhered to the lower surface of the PET film between the two rows of aluminum sheets, nickel sheets 4 extend from both sides of the flexible circuit board, the nickel sheets on both sides of the flexible circuit board are respectively welded to the two rows of aluminum sheets, the flexible circuit board and the aluminum sheets welded by the nickel sheets are pressed and bonded to the PET film, and a window 5 corresponding to the bending groove of the aluminum sheet is opened on the PET film.

[0018] The flexible circuit board and the aluminum sheet welded with nickel sheets are pressed and bonded to the PET film, and a window corresponding to the bending groove of the aluminum sheet is opened on the PET film by pressing, so as to prevent the bending groove of the aluminum sheet from expanding and contracting and tearing the PET film, thereby avoiding the risk of product damage; in addition, since adhesive is pre-provided on the upper surface of the PET film, the aluminum sheet and the flexible circuit board can be positioned on the PET film in the early stage of pressing, and the operation is more convenient; in addition, the nickel sheets on both sides of the flexible circuit board are respectively welded to two rows of aluminum sheets to form a whole, and then fixed to the PET film by pressing, the flexible circuit board and the aluminum sheet are not easy to shift, the pressing effect is better, and the yield rate is higher.

[0019] In addition, one end of the nickel sheet can be welded to the flexible circuit board, and the other end can be tightly attached to the aluminum sheet. The nickel sheet and the aluminum sheet are fixed by laser welding to achieve electrical connection.

[0020] The adhesive provided on the lower surface of the PET film is AD adhesive. The flexible circuit board is a U-shaped flexible circuit board with a hollow center, which occupies less space, uses less material, and has lower cost.

[0021] The first thermistor 7 and the second thermistor 8 are respectively installed on the flexible circuit board. The temperature change on the battery pack can be detected in real time by the first thermistor and the second thermistor, and then converted into a resistance signal, which is transmitted to the BMS system through the circuit and connector on the flexible circuit board, so that the real-time temperature of each battery module can be obtained. A glass fiber reinforcement plate 10 and an aluminum sheet reinforcement plate 11 are provided on the flexible circuit board, and a connector 12 is provided on the flexible circuit board on the glass fiber reinforcement plate. The aluminum sheet reinforcement plate is respectively arranged on the back of the first thermistor 7 and the second thermistor 8. The thickness of the glass fiber reinforcement plate 10 and the aluminum sheet reinforcement plate 11 is 0.5mm. The aluminum sheet reinforcement plate 11 is single-sidedly adhesive, which is used to stick to the back of the first thermistor 7 and the second thermistor 8 to prevent thermal expansion and contraction from damaging the first thermistor 7 and the second thermistor 8, and at the same time, it can prevent the first thermistor 7 and the second thermistor 8 from being damaged by curling or bending of the flexible circuit board during transportation during the manufacturing process. In addition, the connector is arranged on the flexible circuit board, supported by the glass fiber reinforcement plate under the flexible circuit board, and the connector is welded on the corresponding designed pad of the flexible circuit board, and is used in conjunction with the connector on the pre-designed BMS system, that is, the male and female terminals are plugged in, completing the information connection and transmission between the battery pack and the BMS system. In addition, a thermistor window 9 corresponding to the second thermistor is formed by pressing on the PET film, and the thermistor window 9 is more conducive to the temperature detection of the second thermistor.

[0022] The PET film between the two rows of aluminum sheets is provided with an exhaust hole 6 that penetrates the upper and lower surfaces of the PET film. The exhaust hole 6 can facilitate the exhaust of the battery expansion valve, thereby improving the safety of the battery connection system.

[0023] 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. A PET film pressed CCS component, characterized in that: The invention comprises a PET film (1), an adhesive is provided on the upper surface of the PET film, two rows of aluminum sheets (2) are adhered to the upper surface of the PET film, a flexible circuit board (3) is adhered to the upper surface of the PET film between the two rows of aluminum sheets, nickel sheets (4) extend from both sides of the flexible circuit board, the nickel sheets on both sides of the flexible circuit board are respectively welded to the two rows of aluminum sheets, the flexible circuit board and the aluminum sheets welded by the nickel sheets are pressed and bonded to the PET film, and a window (5) corresponding to the bending groove of the aluminum sheet is opened on the PET film.

2. The PET film pressed CCS assembly according to claim 1, characterized in that: The adhesive is AD adhesive.

3. The PET film pressed CCS assembly according to claim 1, characterized in that: The PET film between the two rows of aluminum sheets is provided with exhaust holes (6) penetrating the upper and lower surfaces of the PET film.

4. The PET film pressed CCS assembly according to claim 1, characterized in that: The flexible circuit board is a U-shaped flexible circuit board.

5. The PET film pressed CCS assembly according to claim 1, characterized in that: A first thermistor (7) and a second thermistor (8) are respectively mounted on the flexible circuit board.

6. The PET film pressed CCS assembly according to claim 5, characterized in that: A thermistor window (9) corresponding to the second thermistor is formed by lamination on the PET film.

7. The PET film pressed CCS assembly according to claim 5, characterized in that: A glass fiber reinforcement plate (10) and an aluminum sheet reinforcement plate (11) are provided on the flexible circuit board, a connector (12) is provided on the flexible circuit board on the glass fiber reinforcement plate, and the aluminum sheet reinforcement plates are respectively provided on the backs of the first thermistor (7) and the second thermistor (8).

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