Battery module cell data acquisition flexible circuit board structure

Abstract

The utility model discloses a battery module cell data acquisition flexible circuit board structure, which comprises a flexible circuit board, one end of the flexible circuit board is provided with a connector, the flexible circuit board is provided with at least two bonding pad fixing areas, a flexible circuit connecting area is formed between the adjacent bonding pad fixing areas, and the flexible circuit connecting area is connected with the connector. The flexible circuit is arranged on the flexible circuit connecting area, and the width of the flexible circuit connecting area is smaller than that of the bonding pad fixing area. According to the cell data acquisition circuit board, the flexible circuit board is divided into the bonding pad fixing area and the flexible circuit connecting area, the width of the flexible circuit connecting area is smaller than that of the bonding pad fixing area, so that the bonding pad fixing area and the flexible circuit connecting area on the flexible circuit board are distributed at intervals in a concave-convex shape, and when the flexible circuit board is cut, the bonding pad fixing area and the flexible circuit connecting area are not damaged. Two flexible circuit boards can be processed at a time in a concave-convex mutual embedding mode, so that the utilization rate of raw materials of the flexible circuit boards can be effectively improved, and the production cost is further reduced.

Description

Technical Field

[0001] This utility model relates to a battery module cell data acquisition circuit board, and in particular to a flexible battery module cell data acquisition circuit board. Background Technology

[0002] A battery module consists of multiple cells. To ensure the safe operation of the battery module, it is necessary to collect and monitor the operating data of each cell. An external battery management system monitors the operating status of the cells in real time through the collected data, and can promptly detect and handle problems when they occur. Currently, power battery modules mainly use flexible circuit boards as the circuit components of the data acquisition and connection components to collect data such as cell voltage and temperature.

[0003] Existing battery cell data acquisition circuit boards, such as Figure 1 As shown, it includes a flexible circuit board 1, one end of which is connected to a connector 2. The flexible circuit board 1 has multiple pads 3 for connecting to external signal input nickel plates. The pads 3 are connected to the connector 2 via a flexible circuit 4. In this way, the acquired external signals can be transmitted to the connector 2 through the flexible circuit 4, and then connected to external devices through the connector 2, realizing real-time acquisition of the battery cell signals.

[0004] like Figure 1 As shown, the existing battery cell data acquisition circuit board is a long, rectangular structure. Pads 3 and flexible circuits 4 are both located on the flexible circuit board 1. Because the pads 3 are segmented according to the position of the external signal lines, the distribution of flexible circuits 4 on the flexible circuit board 1 is uneven. The number of flexible circuits 4 is less in areas far from connector 2 and more in areas close to connector 2. This results in a large number of blank spaces on the flexible circuit board 1, leading to a waste of material. Currently, the common method is to directly cut off the areas of the flexible circuit board 1 where there are no flexible circuits 4, creating gaps 5. However, the cut-off material can only be recycled as waste, resulting in poor economic efficiency and making the production cost of this type of battery cell data acquisition circuit board still relatively high. Therefore, it is necessary to further improve the existing flexible battery module battery cell data acquisition circuit board. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a flexible battery module cell data acquisition circuit board with high material utilization and low production cost, which addresses the shortcomings of the existing technology.

[0006] A flexible circuit board structure for data acquisition of battery module cells includes a flexible circuit board. One end of the flexible circuit board is provided with a connector. The flexible circuit board is provided with at least two pad fixing areas. Each pad fixing area is provided with at least one pad. The pads are connected to the connector through a flexible circuit. A flexible circuit connection area is formed between adjacent pad fixing areas. The flexible circuit is disposed on the flexible circuit connection area. The width of the flexible circuit connection area is smaller than the width of the pad fixing area.

[0007] Preferably, the width of the flexible circuit connection area decreases as it moves away from the connector.

[0008] Preferably, the flexible circuit connection area is located on the same side of the flexible circuit board.

[0009] Preferably, the flexible circuit board is provided with three pad fixing areas.

[0010] Preferably, the pad fixing area and the flexible circuit connection area on the flexible circuit board are distributed in a concave-convex pattern.

[0011] Preferably, the flexible circuit board is an FDC flexible circuit board.

[0012] This utility model has the following beneficial effects: The battery cell data acquisition circuit board divides the flexible circuit board into a pad fixing area and a flexible circuit connection area. The width of the flexible circuit connection area is smaller than the width of the pad fixing area, so that the pad fixing area and the flexible circuit connection area on the flexible circuit board are distributed in a concave-convex pattern. When cutting the flexible circuit board, two flexible circuit boards can be processed at one time by interlocking the concave and convex patterns, which can effectively improve the utilization rate of the flexible circuit board raw materials and thus reduce the production cost.

[0013] To further understand the features and technical content of this utility model, please refer to the following detailed description and drawings of this utility model. However, the drawings provided are for reference and illustration only and are not intended to limit this utility model. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an existing battery cell data acquisition circuit board.

[0015] Figure 2 This is a structural schematic diagram of an embodiment of the present utility model.

[0016] Figure 3 This is a schematic diagram of the flexible circuit board during cutting according to an embodiment of the present invention.

[0017] Original component labeling: 1. Flexible circuit board; 2. Connector; 3. Pad; 4. Flexible circuit; 5. Open window; 6. Pad fixing area; 7. Flexible circuit connection area. Detailed Implementation

[0018] The following specific embodiments illustrate the implementation methods disclosed in this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. This utility model can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this utility model. Furthermore, the accompanying drawings of this utility model are for simple illustrative purposes only and are not depictions of actual dimensions, as stated in advance. The following embodiments will further describe the relevant technical content of this utility model in detail, but the disclosed content is not intended to limit the scope of protection of this utility model.

[0019] It should be understood that while terms such as "first" and "second" may be used in this document to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term "or" as used herein should, as appropriate, include any combination of one or more of the related listed items.

[0020] like Figure 2 As shown, this utility model discloses a flexible circuit board structure for data acquisition of battery module cells, which includes a flexible circuit board 1. One end of the flexible circuit board 1 is provided with a connector 2. The flexible circuit board 1 is preferably an FDC flexible circuit board manufactured using the FDC method. The flexible circuit board 1 is provided with at least two pad fixing areas 6. The number of pad fixing areas 6 is determined according to the number of battery module cells. In this embodiment, the number of pad fixing areas 6 is three. Each pad fixing area 6 is provided with at least one pad 3. The number of pads 3 is determined according to the amount of signal acquired.

[0021] Pad 3 is connected to connector 2 via flexible circuit 4. Pad 3 is used to connect to external signal input lines, so that the acquired external signals can be transmitted to connector 2 through flexible circuit 4, and then connected to external devices through connector 2 to realize the acquisition and detection of cell signals. A flexible circuit connection area 7 is formed between adjacent pad fixing areas. Flexible circuit 4 is set on flexible circuit connection area 7, and the width of flexible circuit connection area 7 is smaller than the width of pad fixing area 6. Flexible circuit connection area 7 is located on the same side of flexible circuit board 1.

[0022] Since all electrical signals on the flexible battery module cell data acquisition circuit board are output through connector 2, all pads 3 are electrically connected to connector 2. Therefore, there are fewer flexible circuits 4 on the flexible circuit connection area 7 away from connector 2, and more flexible circuits 4 on the flexible circuit connection area 7 closer to connector 2. Thus, the width of the flexible circuit connection area decreases as it moves away from the connector, while the width of the flexible circuit connection area increases as it moves closer to the connector. The pad fixing area 6 and the flexible circuit connection area 7 on the flexible circuit board 1 are distributed in a concave-convex pattern.

[0023] like Figure 3 As shown, the battery cell data acquisition circuit board divides the flexible circuit board into a pad fixing area 6 and a flexible circuit connection area 7. The pad fixing area 6 and the flexible circuit connection area 7 on the flexible circuit board are distributed in a concave-convex pattern. This allows for the production of two interlocking flexible circuit boards by using a slightly wider flexible circuit board and following the appropriate die-cutting method. The two flexible circuit boards are simply opposite in orientation, with the pad fixing area 6 of one flexible circuit board corresponding to the flexible circuit connection area 7 of the other. This effectively improves the utilization rate of the flexible circuit board's raw materials, thereby reducing production costs.

[0024] The above-disclosed content is only a preferred and feasible embodiment of the present utility model, and is not intended to limit the scope of the patent application of the present utility model. Therefore, all equivalent technical changes made using the contents of the present utility model specification and drawings are included in the scope of the patent application of the present utility model.

Claims

1. A flexible circuit board structure for data acquisition of battery module cells, comprising a flexible circuit board, wherein one end of the flexible circuit board is provided with a connector, characterized in that, The flexible circuit board has at least two pad fixing areas, each pad fixing area has at least one pad, the pads are connected to the connector through a flexible circuit, and a flexible circuit connection area is formed between adjacent pad fixing areas. The flexible circuit is disposed on the flexible circuit connection area, and the width of the flexible circuit connection area is smaller than the width of the pad fixing area.

2. The flexible circuit board structure for battery module cell data acquisition according to claim 1, characterized in that, The width of the flexible circuit connection area decreases as it moves away from the connector.

3. The flexible circuit board structure for battery module cell data acquisition according to claim 1, characterized in that, The flexible circuit connection area is located on the same side of the flexible circuit board.

4. The flexible circuit board structure for battery module cell data acquisition according to claim 1, characterized in that, The flexible circuit board has three solder pad fixing areas.

5. The flexible circuit board structure for battery module cell data acquisition according to claim 1, characterized in that, The pad fixing area and the flexible circuit connection area on the flexible circuit board are distributed in an uneven pattern.

6. The flexible circuit board structure for battery module cell data acquisition according to claim 1, characterized in that, The flexible circuit board is an FDC flexible circuit board.

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