High-integration CCS integrated busbar

Abstract

The utility model relates to the technical field of batteries, in particular to a high-integration CCS integrated busbar which comprises a flexible circuit board, a plurality of conductive carriers are connected to the surface of the flexible circuit board, the conductive carriers are arranged on the two sides of the flexible circuit board in a staggered mode, and connectors used for BMS connection are arranged at the two ends of the flexible circuit board. The integrated temperature collectors are arranged on the conductive carriers, and one temperature collector is arranged every two conductive carriers, so that the effect of improving the integration level of the integrated busbar is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and in particular to a highly integrated CCS integrated busbar. Background Art

[0002] CCS (Cell Contact System, integrated busbar) mainly consists of signal acquisition components (such as FPC, PCB, FFC, etc.), plastic structural parts, copper-aluminum busbars, etc., and is connected into a whole through processes such as thermal pressing or riveting. It realizes the high-voltage series and parallel connection of battery cells, as well as functions such as temperature sampling of the battery and cell voltage sampling, and provides temperature and voltage information to the BMS (Battery Management System) through FPC / PCB and connector components, and belongs to a part of the BMS system.

[0003] The above-mentioned existing technical solutions have the following defects: There are still many places where the existing integrated busbars cannot be used, and the integration degree of the busbars needs to be improved. Utility Model Content

[0004] In order to improve the integration degree of the integrated busbar, the present application provides a highly integrated CCS integrated busbar.

[0005] The above technical purpose of the present application is achieved through the following technical solutions:

[0006] A highly integrated CCS integrated busbar includes a flexible circuit board. A plurality of conductive carriers are connected to the surface of the flexible circuit board. The plurality of conductive carriers are staggered on both sides of the flexible circuit board. Connectors for connecting to the BMS are provided at both ends of the flexible circuit board. An integrated temperature collector is provided on the conductive carrier, and one temperature collector is provided every two conductive carriers.

[0007] By adopting the above solution, the connector is connected to the BMS, and the battery cell is connected to the conductive carrier. The conductive carrier detects the voltage of the battery cell, and the temperature collector collects the temperature of the battery cell. One temperature collector is provided every two conductive carriers, which can reduce the cost of the busbar while ensuring the operation state of the detected battery cell. By integrating the wire harness busbar into a flexible circuit board, the volume of the busbar is further reduced, thereby improving the integration degree of the integrated busbar, so that the busbar can be applied to battery packs with smaller spaces.

[0008] Optionally, the conductive carrier is welded to the surface of the circuit board.

[0009] By adopting the above solution, connecting the conductive carrier to the surface of the circuit board by welding can provide a relatively stable connection, and welding can achieve a low-resistance connection, which helps to reduce energy loss and improve the efficiency of the system.

[0010] Optionally, the conductive carrier is a conductive carrier made of nickel.

[0011] By adopting the above scheme, the nickel material has good electrical conductivity, and since the conductive carrier is connected to the circuit board by welding, nickel has good high-temperature performance and can still maintain a certain strength and stability in a high-temperature environment. Therefore, using nickel material to make the conductive carrier can make the welding more stable.

[0012] Optionally, the flexible circuit board includes an insulating substrate, a conductive layer, and a signal acquisition circuit, and the conductive carrier is connected to the signal acquisition circuit.

[0013] By adopting the above scheme, the insulating substrate acts as a support to support the flexible circuit board, the conductive layer is used to transmit large currents, the signal acquisition circuit is connected to the conductive carrier, and the conductive carrier is connected to the BMS so that the BMS can obtain the working state of the battery cell.

[0014] Optionally, the insulating substrate is an insulating substrate made of polyimide.

[0015] By adopting the above scheme, polyimide has excellent heat resistance, chemical resistance, and mechanical properties, and can also meet the insulation of the insulating substrate.

[0016] Optionally, the conductive layer is a conductive layer made of copper.

[0017] By adopting the above scheme, copper has good electrical conductivity and thermal conductivity, and its price is lower than that of silver, with a relatively high cost performance.

[0018] Optionally, a protective film is provided above the signal acquisition circuit.

[0019] By adopting the above scheme, the protective film is used to protect the signal acquisition circuit and make the busbar more durable.

[0020] Optionally, the protective film wraps the connection between the conductive carrier and the signal acquisition circuit.

[0021] By adopting the above scheme, the protective film also protects the connection between the conductive carrier and the signal acquisition circuit, improving the stability of the connection between the conductive carrier and the signal acquisition circuit.

[0022] Optionally, a plurality of round holes are provided on the surface of the flexible circuit board.

[0023] By adopting the above scheme, when installing the busbar, the screw can pass through the round hole, and then the screw is connected to the battery pack, thereby fixing the busbar to the battery pack.

[0024] In summary, the present application has the following technical effects:

[0025] 1. By providing a flexible circuit board and a conductive carrier, the volume of the busbar is further reduced, thereby improving the integration degree of the integrated busbar;

[0026] 2. By using nickel to make the conductive carrier, the conductive carrier has good thermal conductivity;

[0027] 3. The signal acquisition circuit is protected by a protective film arranged above the signal acquisition circuit. Description of the Drawings

[0028] Figure 1 is the overall structural schematic diagram of the present application;

[0029] Figure 2 is a partial structural cross-sectional view of the flexible circuit board intended to be emphasized in the present application.

[0030] In the figure, 1 is the flexible circuit board; 11 is the insulating substrate; 12 is the conductive layer; 13 is the signal acquisition circuit; 2 is the conductive carrier; 3 is the connector; 4 is the temperature collector; 5 is the protective film. Detailed Embodiment

[0031] The following further describes the present application in detail with reference to the drawings.

[0032] Refer to Figure 1 , a high-integration CCS integrated busbar, including a flexible circuit board 1, a plurality of conductive carriers 2 are connected to the surface of the flexible circuit board 1, the plurality of conductive carriers 2 are arranged in a staggered manner on both sides of the flexible circuit board 1, and connectors 3 for BMS connection are arranged at both ends of the flexible circuit board 1. The connector 3 is connected to the BMS, and the battery cell is connected to the conductive carrier 2. The conductive carrier 2 detects the voltage of the battery cell. By integrating the wire harness busbar into the flexible circuit board 1, the volume of the busbar is further reduced, thereby improving the integration degree of the integrated busbar, so that the busbar can be applied to a battery pack with a smaller space.

[0033] Refer to Figure 1 , the conductive carrier 2 is made of nickel, and the conductive carrier 2 is connected to the surface of the circuit board by welding. Connecting the conductive carrier 2 to the surface of the circuit board by welding can provide a relatively stable connection, and welding can achieve a low-resistance connection, which helps to reduce energy loss and improve the efficiency of the system. The nickel material has good electrical conductivity, and since the conductive carrier 2 is connected to the circuit board by welding, nickel has good high-temperature performance and can still maintain a certain strength and stability in a high-temperature environment. Therefore, using nickel material to make the conductive carrier 2 can make the welding more stable.

[0034] Refer to Figure 1 , an integrated temperature collector 4 is arranged on the conductive carrier 2, and a temperature collector 4 is arranged for every two conductive carriers 2. The temperature collector 4 collects the temperature of the battery cell. Arranging a temperature collector 4 for every two conductive carriers 2 can reduce the cost of the busbar while ensuring the operation state of the battery cell detection. A plurality of round holes are formed on the surface of the flexible circuit board 1 for connecting the integrated busbar to the battery pack.

[0035] Referring to Figure 1 and Figure 2 ,the flexible circuit board 1 includes an insulating substrate 11, a conductive layer 12, and a signal acquisition line 13. The insulating substrate 11 serves as a support to support the flexible circuit board 1. The insulating substrate 11 is made of polyimide, which has excellent heat resistance, chemical resistance, and mechanical properties, and can also meet the insulation of the insulating substrate 11. The conductive layer 12 is used to transmit large currents. The conductive layer 12 is made of copper, which has good electrical conductivity and thermal conductivity, and its price is lower than that of silver, with a relatively high cost performance. The signal acquisition line 13 is connected to the conductive carrier 2, and the conductive carrier 2 is connected to the BMS so that the BMS can obtain the working state of the battery cell.

[0036] A protective film 5 is provided on the signal acquisition line 13 to protect the conductive carrier 2, and the protective film 5 wraps the connection between the conductive carrier 2 and the signal acquisition line 13 to improve the stability of the connection between the conductive carrier 2 and the signal acquisition line 13.

[0037] This specific embodiment is only an interpretation of the present application and does not limit the present application. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present application, it is protected by the patent law.

Claims

1. A highly integrated CCS integrated busbar, characterized by: The invention comprises a flexible circuit board (1), wherein a plurality of conductive carriers (2) are connected to the surface of the flexible circuit board (1), the plurality of conductive carriers (2) are arranged alternately on both sides of the flexible circuit board (1), connectors (3) for BMS connection are arranged at both ends of the flexible circuit board (1), an integrated temperature collector (4) is arranged on the conductive carrier (2), and a temperature collector (4) is arranged on every two conductive carriers (2).

2. A highly integrated CCS integrated busbar according to claim 1, characterized in that: The conductive carrier (2) is welded on the surface of the flexible circuit board (1).

3. A highly integrated CCS integrated busbar according to claim 2, characterized in that: The conductive carrier (2) is a conductive carrier (2) made of nickel.

4. The high-integration CCS integrated busbar according to claim 1, characterized in that: The flexible circuit board (1) comprises an insulating substrate (11), a conductive layer (12) and a signal acquisition circuit (13); the conductive carrier (2) is connected to the signal acquisition circuit (13).

5. The high-integration CCS integrated busbar according to claim 4, characterized in that: The insulating substrate (11) is an insulating substrate (11) made of polyimide.

6. The high-integration CCS integrated busbar according to claim 4, characterized in that: The conductive layer (12) is a conductive layer (12) made of copper.

7. The high-integration CCS integrated busbar according to claim 4, characterized in that: A protective film (5) is provided above the signal collection circuit (13).

8. The high-integration CCS integrated busbar according to claim 7, characterized in that: The protective film (5) wraps the connection between the conductive carrier (2) and the signal collection circuit (13).

9. The high-integration CCS integrated busbar according to claim 1, characterized in that: A plurality of circular holes are provided on the surface of the flexible circuit board.

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