CCS integrated busbar integrated with low-voltage BMS

Abstract

The utility model relates to the technical field of new energy batteries, in particular to a CCS integrated busbar integrated with a low-voltage BMS, which comprises a plastic support, an aluminum bar, a circuit board, a connector and a thermistor, a bonding pad of the circuit board is electrically connected with the aluminum bar through welding, the thermistor is electrically connected with the circuit board through welding, and the thermistor is in contact with the aluminum bar; the LED lamp further comprises a low-voltage BMS, the low-voltage BMS is integrated on the circuit board and electrically connected with the circuit board, and the circuit board is electrically connected with an external high-voltage BMS through a connector. According to the scheme, the low-voltage BMS is directly integrated into the front-end signal acquisition circuit board, so that the integration level of the device is improved, the assembly space is saved, and the cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of new energy, and specifically relates to a CCS integrated busbar integrating a low-voltage BMS. Background Art

[0002] In the signal acquisition system of new energy batteries, a CCS integrated busbar is required to collect parameters such as the current, voltage, and temperature of the battery, and then the battery management is carried out through the BMS. The existing CCS integrated busbar is produced by the printed circuit board method. Then, nickel sheets and other electronic components are soldered onto the printed circuit board through SMT, and then laser-welded to the aluminum bar; the existing CCS integrated busbar is connected to an external low-voltage BMS through a connector, and the low-voltage BMS is then connected to the high-voltage BMS. This method is not only more cumbersome, but also the overall production and processing cost is relatively expensive.

[0003] Therefore, the existing CCS integrated busbar and its electrical connection method have the following disadvantages:

[0004] (1) The low-voltage BMS needs to be produced separately, and the production cost of materials is relatively high;

[0005] (2) Since there are many lines for the CCS integrated busbar to collect, the printed circuit board must be provided with a multi-port connector, and then connected to the external low-voltage BMS through the connector, making the external lines chaotic, and the cost of the multi-port and multi-wire harness connector is relatively high. Summary of the Utility Model

[0006] To solve the above technical problems, the basic concept of the technical solution adopted by the utility model is as follows:

[0007] A CCS integrated busbar integrating a low-voltage BMS includes a plastic bracket, an aluminum bar, a printed circuit board, a connector, and a thermistor. The pads of the printed circuit board are electrically connected to the aluminum bar through welding, the thermistor is electrically connected to the printed circuit board through welding, and the thermistor is in contact with the aluminum bar; it further includes a low-voltage BMS, which is integrated on the printed circuit board and forms an electrical connection with the printed circuit board, and the printed circuit board forms an electrical connection with an external high-voltage BMS through the connector.

[0008] As a preferred embodiment of the utility model, the aluminum bars are distributed on both sides of the plastic bracket.

[0009] As a preferred embodiment of the utility model, the printed circuit board is a rigid printed circuit board, and the low-voltage BMS is integrated on the printed circuit board.

[0010] As a preferred embodiment of the utility model, the printed circuit board is a flexible printed circuit board, the low-voltage BMS is integrated on the printed circuit board, and a reinforcement is provided on the other surface of the printed circuit board, and the position of the reinforcement corresponds to the position of the low-voltage BMS.

[0011] As a preferred embodiment of the present utility model, the circuit board leads out pads corresponding to each aluminum bar and is electrically connected to the aluminum bar.

[0012] As a preferred embodiment of the present utility model, the connector is electrically connected to an external high-voltage BMS through a communication line.

[0013] The present utility model has the following beneficial effects compared with the prior art:

[0014] In the present utility model, the circuit board and the aluminum bar are fixed by welding, with high assembly efficiency. The present utility model does not require separate production of a low-voltage BMS, but directly integrates the low-voltage BMS into the front-end signal acquisition circuit board, improving the integration of components, saving assembly space, and being conducive to cost savings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a front structural schematic diagram of Embodiment 1 and Embodiment 2 of the present utility model;

[0016] Figure 2 is a back structural schematic diagram of Embodiment 2 of the present utility model.

[0017] In the figure: 10, plastic bracket; 11, aluminum bar; 12, circuit board; 13, pad; 14, connector; 15, thermistor; 16, low-voltage BMS; 17, reinforcement. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model.

[0019] See Figure 1 , this is Embodiment 1 of the present utility model, an integrated CCS integrated busbar with a low-voltage BMS, including a plastic bracket 10, an aluminum bar 11, a circuit board 12, a connector 14, and a thermistor 15. The pad 13 of the circuit board 12 is electrically connected to the aluminum bar 11 by welding, the thermistor 15 is electrically connected to the circuit board 12 by welding, and the thermistor 15 is in contact with the aluminum bar 11; it further includes a low-voltage BMS 16, the low-voltage BMS 16 is integrated on the circuit board 12 and is electrically connected to the circuit board 12, and the circuit board 12 is electrically connected to an external high-voltage BMS through the connector 14.

[0020] The aluminum bars 11 are distributed on both sides of the plastic bracket 10.

[0021] In this embodiment, the circuit board 12 is a rigid circuit board, and the low-voltage BMS 16 is integrated on the circuit board 12.

[0022] For each aluminum bar 11, the circuit board 12 leads out a pad 13 and is electrically connected to the aluminum bar (11).

[0023] The connector 14 is electrically connected to an external high-voltage BMS through a communication line.

[0024] See Figure 1 and Figure 2 This is Embodiment 2 of the present utility model. Different from Embodiment 1, in this embodiment, the circuit board 12 is a flexible circuit board, the low-voltage BMS 16 is integrated on the circuit board 12, and a reinforcement 17 is provided on the other surface of the circuit board 12. The position of the reinforcement 17 corresponds to the position of the low-voltage BMS 16. Since the flexible circuit board is relatively soft, the main function of the reinforcement 17 is to increase the strength at the position of the low-voltage BMS 16. Other structures are the same as those in Embodiment 1 and will not be described in detail here.

[0025] It can be understood that the present utility model is described by some embodiments. Those skilled in the art know that, without departing from the spirit and scope of the present utility model, various changes or equivalent replacements can be made to these features and embodiments. In addition, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. A CCS integrated busbar integrated with a low-voltage BMS, characterized in that: The invention comprises a plastic bracket (10), an aluminum bar (11), a circuit board (12), a connector (14) and a thermistor (15), wherein the pad (13) of the circuit board (12) is electrically connected to the aluminum bar (11) by welding, the thermistor (15) is electrically connected to the circuit board (12) by welding, and the thermistor (15) is in contact with the aluminum bar (11); the invention is characterized in that: it also comprises a low-voltage BMS (16), the low-voltage BMS (16) is integrated on the circuit board (12), and is electrically connected to the circuit board (12), and the circuit board (12) is electrically connected to an external high-voltage BMS through the connector (14).

2. The CCS integrated busbar of the integrated low-voltage BMS according to claim 1 is characterized in that: The aluminum bars (11) are distributed on both sides of the plastic support (10).

3. The CCS integrated busbar of the integrated low-voltage BMS according to claim 1 is characterized in that: The circuit board (12) is a hard circuit board, and the low-voltage BMS (16) is integrated on the circuit board (12).

4. The CCS integrated busbar of the integrated low-voltage BMS according to claim 1 is characterized in that: The circuit board (12) is a flexible circuit board, the low-voltage BMS (16) is integrated on the circuit board (12), and a reinforcement (17) is provided on another surface of the circuit board (12), the position of the reinforcement (17) corresponding to the position of the low-voltage BMS (16).

5. The CCS integrated busbar of the integrated low-voltage BMS according to claim 1 is characterized in that: The circuit board (12) leads out a soldering pad (13) corresponding to each aluminum bar (11) and is electrically connected to the aluminum bar (11).

6. The CCS integrated busbar of the integrated low-voltage BMS according to claim 1, characterized in that: The connector (14) is electrically connected to an external high-voltage BMS via a communication line.

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