PCB-CCS integrated busbar

Abstract

A PCB-CCS integrated busbar relates to the technical field of electronic equipment and comprises a PCB base plate, a plastic structural member, an aluminum bar and a functional circuit. The PCB bottom plate is assembled in a mounting groove of the plastic structural member, an aluminum bar is mounted at the head end of the PCB bottom plate, a functional circuit is arranged on the plate surface of the PCB bottom plate, and all modules in the functional circuit are electrically connected with the aluminum bar through copper foil wires respectively; the busbar is small in size and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic devices, in particular to a PCB-CCS integrated busbar. Background Art

[0002] A power energy storage system is a new energy storage system composed of multiple battery packs, BMS, PCS, and a power distribution module. In this energy storage system, generally, the BMS module is responsible for managing and controlling the operation of multiple battery packs, the power distribution module is responsible for reasonably distributing and regulating the power, and the PCS controls the charging and discharging of the battery packs; among them, a connector is required for the connection between the battery pack and the BMS.

[0003] Currently, the connector generally adopts a copper wire harness or a CCS integrated busbar structure. The copper wire harness is generally composed of a plastic surrounding the outside of the copper wire. When connecting the battery pack, each wire harness reaches one electrode. However, when there are many current signals in the power battery pack, many wire harnesses are required to cooperate, which takes up a large amount of space.

[0004] The CCS integrated busbar is composed of a signal acquisition component, a plastic structure component, a copper-aluminum busbar, etc., and is connected into a whole through processes such as hot pressing or riveting to realize the high-voltage series and parallel connection of battery cells and the functions of battery temperature sampling and cell voltage sampling, and transmits information such as temperature and voltage to the BMS system through the information sampling component and the connector; however, the modules in the traditional CCS integrated busbar are still connected by wire harnesses, resulting in a relatively large volume of the CCS integrated busbar.

[0005] Chinese Patent (CN219759907U) discloses a CCS flat wire for a battery pack module. By connecting the two ends of the CCS flat wire to the PCB bottom plate and the connector respectively, it solves the problem that a section of wire harness is required for the connection between the battery module and the BMS, reduces one installation step, saves labor costs, reduces a section of wire harness, and actually reduces a pair of connectors compared with the original scheme, saving material costs; however, this CCS still leads to a relatively large overall volume through an external PCB bottom plate.

[0006] Therefore, we propose an integrated busbar with a small volume. Summary of the Utility Model

[0007] In order to overcome the deficiencies in the background art, the utility model discloses a PCB-CCS integrated busbar.

[0008] To achieve the above invention purpose, the utility model adopts the following technical solutions:

[0009] A PCB-CCS integrated busbar includes a PCB bottom plate, a plastic structure component, an aluminum busbar, and a functional circuit.

[0010] The PCB bottom plate is assembled in the installation groove of the plastic structural part. An aluminum row is installed at the head end of the PCB bottom plate. A functional circuit is provided on the board surface of the PCB bottom plate, and each module in the functional circuit is electrically connected to the aluminum row through copper foil traces.

[0011] Preferably, a plurality of mounting holes are provided in the middle of the board surface of the PCB bottom plate, and the plurality of mounting holes are arranged along the length direction of the PCB bottom plate.

[0012] Preferably, the plurality of mounting holes are correspondingly located on the same straight line.

[0013] Preferably, the plastic structural part includes a seat body. A plurality of installation grooves are provided on the top surface of the seat body. After passing through the installation holes of the PCB bottom plate, a limiting part for fixing the position of the PCB bottom plate is provided in the installation groove.

[0014] Preferably, the limiting part includes an umbrella-shaped limiting head and a threaded hole. The umbrella body part of the umbrella-shaped limiting head abuts and limits the PCB bottom plate, and the umbrella handle part of the umbrella-shaped limiting head is threadedly connected to the threaded hole. The threaded hole is located at the bottom surface of the installation groove.

[0015] Preferably, a cross groove is provided at the top of the umbrella-shaped limiting head.

[0016] Preferably, the functional circuit includes a temperature sampling module, a high-voltage series module, a voltage sampling module, and an overcurrent fusing module.

[0017] Due to the adoption of the above technical solutions, the present utility model has the following beneficial effects:

[0018] A PCB-CCS integrated busbar disclosed by the present utility model can effectively improve the integration of the busbar and thus reduce the overall volume of the busbar by using a PCB bottom plate and corresponding copper foil traces to replace the traditional wire harness solution;

[0019] In addition, the position of the PCB bottom plate is fixed by the installation groove and the limiting part in the plastic structural part, which simplifies the assembly process and is convenient for subsequent maintenance and replacement work;

[0020] In addition, the design of the umbrella-shaped limiting head provides stable mechanical fixation, and the stability and reliability of the components can be maintained even in a vibration or impact environment. The cross groove enables the limiting head to be tightened and disassembled using standard tools, increasing convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a structural schematic diagram of the present utility model;

[0022] Figure 2 is a structural schematic diagram of the limiting part.

[0023] In the figure: 1. PCB bottom board; 11. Mounting hole; 2. Plastic structural part; 21. Base body; 22. Mounting groove; 23. Limiting part; 231. Umbrella-shaped limiting head; 232. Threaded hole; 3. Aluminum busbar; 4. Functional circuit. Specific embodiments

[0024] The following will describe the technical solutions of the present invention in conjunction with the drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right", etc. indicating the orientation or positional relationship, they are only corresponding to the drawings of the present invention. For the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation:

[0025] Combined with the attached Figure 1-2 The described PCB-CCS integrated busbar includes a PCB bottom board 1, a plastic structural part 2, an aluminum busbar 3, and a functional circuit 4;

[0026] The PCB bottom board 1 is assembled in the mounting groove 22 of the plastic structural part 2, where the plastic structural part 2 provides necessary insulation isolation to prevent short circuits between the electrical components on the PCB bottom board 1 and other metal components;

[0027] The head end of the PCB bottom board 1 is installed with an aluminum busbar 3, and the aluminum busbar 3 is installed on the PCB bottom board 1 through nickel sheets or other conductive materials. The aluminum busbar 3 serves as an input and output interface for electrical connection and information interaction with the BMS system;

[0028] The PCB bottom board 1 is assembled in the mounting groove 22 of the plastic structural part 2. The head end of the PCB bottom board 1 is installed with an aluminum busbar 3. The board surface of the PCB bottom board 1 is provided with a functional circuit 4, and each module in the functional circuit 4 is electrically connected to the aluminum busbar 3 through copper foil traces;

[0029] Particularly, the functional circuit 4 includes a temperature sampling module, a high-voltage series module, a voltage sampling module, and an overcurrent fusing module; among them, the temperature sampling module is used to monitor the temperature of the battery pack, the high-voltage series module is used to achieve high-voltage series connection between battery packs, the voltage sampling module is used to monitor the voltage of the battery pack, and the overcurrent fusing module is used to disconnect the circuit in case of overcurrent to protect the battery system;

[0030] As needed, the temperature sampling module, high-voltage series module, voltage sampling module, and over-current fusing module are dispersedly arranged, and some modules are located on one side of the plurality of mounting holes 11, while another part of the modules are located on the other side of the plurality of mounting holes 11; this distribution method can disperse each module. Since each module will generate a certain degree of heat during operation, dispersing the positions of each module can keep the temperature distribution relatively average when the PCB bottom plate 1 is working, preventing local high temperature from occurring and causing the PCB bottom plate 1 to malfunction.

[0031] In addition, modules such as a power supply module, a signal processing circuit, a microcontroller, and a communication interface may also be provided on the PCB bottom plate 1. Among them, the power supply module is used to supply power to the temperature sampling module, high-voltage series module, voltage sampling module, and over-current fusing module, and the signal processing circuit is used to preprocess the sampled voltage or temperature signal, and then the microcontroller analyzes the sampled signal and transmits the signal to an external host computer through the communication interface.

[0032] Embodiment 2 is as follows:

[0033] On the basis of Embodiment 1, the structure of the PCB bottom plate 1 is further defined, that is, a plurality of mounting holes 11 are provided in the middle of the plate surface of the PCB bottom plate 1, and the plurality of mounting holes 11 are arranged along the length direction of the PCB bottom plate 1;

[0034] Through the setting of the mounting holes 11, the structural weight of the PCB bottom plate 1 is smaller and the surface area is also smaller, thereby effectively improving the heat dissipation ability of the PCB bottom plate 1 and protecting the safety of the operation of each circuit module on the PCB bottom plate 1.

[0035] In addition, the plurality of mounting holes 11 are correspondingly located on the same straight line. This setting method can simplify the initial production process of the PCB bottom plate 1, that is, when the PCB bottom plate 1 is produced, the punch only needs to feed axially and does not need to feed laterally, improving the production efficiency of the PCB bottom plate 1.

[0036] Embodiment 3 is as follows:

[0037] On the basis of Embodiment 2, the plastic structural member 2 is further defined, that is, the plastic structural member 2 includes a seat body 21, a plurality of mounting grooves 22 are provided on the top surface of the seat body 21, and a limiting member 23 for fixing the position of the PCB bottom plate 1 after passing through the mounting holes 11 of the PCB bottom plate 1 is provided in the mounting grooves 22;

[0038] The size of the installation groove 22 is approximately the same as that of the PCB bottom plate 1 and can be used to hold the PCB bottom plate 1 in a clamping manner, so as to combine the PCB bottom plate 1 with the CCS busbar composed of the plastic structural member 2, the aluminum busbar 3, the temperature sampling module, the high-voltage series module, the voltage sampling module, and the overcurrent fuse module to form an integrated busbar structure, thereby effectively reducing the overall volume of the busbar.

[0039] In addition, the limiting member 23 includes an umbrella-shaped limiting head 231 and a threaded hole 232. The umbrella body part of the umbrella-shaped limiting head 231 abuts against and limits the PCB bottom plate 1, and the umbrella handle part of the umbrella-shaped limiting head 231 is threadedly connected to the threaded hole 232, and the threaded hole 232 is located at the bottom surface of the installation groove 22; by screwing a plurality of umbrella-shaped limiting heads 231 into the corresponding threaded holes 232 respectively and making the three-body part abut against the plate surface of the PCB bottom plate 1, the PCB bottom plate 1 can be fixed in the installation groove 22.

[0040] Particularly, a cross groove is provided at the top of the umbrella-shaped limiting head 231, which can facilitate workers to use tools to tighten the umbrella-shaped limiting head 231, reduce the operation difficulty of workers, and improve the installation efficiency of workers for the PCB bottom plate 1.

[0041] The parts not detailed in the present utility model are prior arts. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model; therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model, and any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A PCB-CCS integrated busbar, characterized by: It comprises a PCB base plate (1), a plastic structural part (2), an aluminum busbar (3) and a functional circuit (4); The PCB base plate (1) is mounted in a mounting groove (22) of a plastic structural member (2); an aluminum bar (3) is mounted at the head end of the PCB base plate (1); a functional circuit (4) is provided on the surface of the PCB base plate (1); and each module in the functional circuit (4) is electrically connected to the aluminum bar (3) via copper foil wiring.

2. The PCB-CCS integrated busbar according to claim 1, characterized in that: A plurality of mounting holes (11) are provided in the middle of the board surface of the PCB bottom board (1), and the plurality of mounting holes (11) are arranged along the length direction of the PCB bottom board (1).

3. The PCB-CCS integrated busbar according to claim 2, characterized in that: The plurality of mounting holes (11) are correspondingly located on the same straight line.

4. The PCB-CCS integrated busbar according to claim 2 or 3, characterized in that: The plastic structural member (2) comprises a seat body (21), a top surface of the seat body (21) being provided with a plurality of mounting grooves (22), and the mounting grooves (22) being provided with stoppers (23) for fixing the position of the PCB bottom plate (1) after passing through the mounting holes (11) of the PCB bottom plate (1).

5. The PCB-CCS integrated busbar according to claim 4, characterized in that: The limiting member (23) comprises an umbrella-shaped limiting head (231) and a threaded hole (232), wherein the umbrella body of the umbrella-shaped limiting head (231) abuts against the PCB bottom plate (1) for limiting, the handle of the umbrella-shaped limiting head (231) is threadedly connected to the threaded hole (232), and the threaded hole (232) is located at the bottom surface of the installation groove (22).

6. The PCB-CCS integrated busbar according to claim 5, characterized in that: The top of the umbrella-shaped limiting head (231) is provided with a cross groove.

7. The PCB-CCS integrated busbar according to claim 2, characterized in that: The functional circuit (4) comprises a temperature sampling module, a high-voltage series module, a voltage sampling module and an overcurrent fuse module.

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