Detachable circuit board assembly of battery pack

Abstract

The utility model provides a detachable circuit board assembly of a battery pack. The detachable circuit board assembly comprises a battery pack box body, according to the detachable circuit board assembly of the battery pack provided by the utility model, all the single-module acquisition lines are firstly connected with the confluence circuit board, the confluence circuit board arranges wire harnesses and signals and then converges the wire harnesses and the signals into one wire harness, and the wire harness is connected with the front circuit board panel through the FPC; the volume and the reliability of the FPC are superior to those of a traditional wire harness, the front panel can be disassembled by only plugging one plug, the battery pack is more convenient, too long and too much disordered wire harnesses cannot exist in the battery pack, and the detachable circuit board group is designed at the front part of the battery pack, so that the battery pack can be conveniently disassembled without moving the battery pack out of a container. The circuit board is maintained without dismounting the water cooling plate at the upper part of the battery pack, and the circuit board panel is easy to dismount.

Description

Technical Field

[0001] This utility model relates to the field of container battery packs, and more particularly to a detachable circuit board assembly for a battery pack. Background Technology

[0002] Containerized battery packs are large-scale energy storage devices that play a key role in energy storage and management. They use a container as their outer shell and integrate a large number of high-performance battery modules inside. They typically use advanced technologies such as lithium-ion batteries and have advantages such as high energy density and long cycle life. Their advantages include convenient installation, as they can be transported as a whole to a designated location and put into use quickly; and flexible deployment, as they can be installed in different sites according to actual needs.

[0003] Currently, product repairs and replacements of circuit boards require removing the battery pack from the battery rack and opening the battery pack cover. This method is suitable for small battery packs, but for large battery packs, especially container battery systems, the traditional method presents significant challenges for after-sales service due to their large size, heavy weight, and the inconvenience of moving the battery pack in various installation scenarios. Furthermore, each module inside the battery pack has a data acquisition harness containing voltage, temperature, and equalization functions. For ship safety requirements, each cell must have voltage, temperature, and equalization functions, resulting in a large number of harnesses throughout the battery pack. If all these harnesses for each module are directly connected to the front panel circuit board, multiple plugs and sockets on the back must be manually disconnected during disassembly, which is inconvenient and can easily damage the harnesses or connectors.

[0004] Therefore, it is necessary to provide a detachable circuit board assembly for a battery pack to solve the above-mentioned technical problems. Utility Model Content

[0005] This utility model provides a detachable circuit board assembly for a battery pack, which solves the problem that large battery packs have many internal data acquisition harnesses, and the circuit board is inconvenient to disassemble and repair due to the multiple data acquisition harnesses connected to it. During disassembly, it is necessary to manually disconnect multiple plugs and sockets on the back, which is very inconvenient and can easily damage the harnesses or connectors.

[0006] To solve the above-mentioned technical problems, this utility model provides a detachable circuit board assembly for a battery pack, including: a battery pack housing;

[0007] The circuit board panel is located in the middle of one side of the surface of the battery pack housing. A circuit board is located in the middle of the surface of the circuit board panel. Communication sockets are located on both sides of the surface of the circuit board panel. A communication line is located on one side of the communication socket. A second connector is fixedly installed on one side of the surface of the circuit board.

[0008] A single-module acquisition line is provided, and multiple single-module acquisition lines are respectively disposed inside the battery pack housing. The multiple single-module acquisition lines are connected together by a busbar circuit board. A flexible circuit board (FPC) is provided on one side of the busbar circuit board, and a first connector is fixedly connected to one side of the flexible circuit board (FPC).

[0009] Preferably, a sealing strip is provided on one side of the circuit board panel surface, and fasteners are provided on all four sides of the other side of the circuit board panel surface.

[0010] Preferably, the other end of the communication line is disposed on the surface of the circuit board.

[0011] Preferably, the first connector and the second connector are connected.

[0012] Preferably, buffer devices are fixedly installed on both sides of the outer surface of the circuit board panel, and a pressing device is sleeved on one side of the outer surface of the buffer device, with the circuit board disposed on the surface of the pressing device.

[0013] Preferably, the buffer device includes a fixed post, a movable block, and a spring. The fixed post is fixedly installed on the surface of the circuit board panel, the movable block is fixedly installed at one end of the fixed post, and the spring is sleeved on one side of the outer surface of the fixed post.

[0014] Preferably, the extrusion device includes an extrusion plate, a buffer pad, a setting groove, and a moving cavity. The extrusion plate is slidably installed on one side of the outer surface of the fixed column, the buffer pad is fixedly connected to one side of the outer surface of the extrusion plate, the two setting grooves are respectively opened on both sides of the outer surface of the extrusion plate, and the moving cavity is connected to one side of the setting groove.

[0015] Compared with related technologies, the detachable circuit board assembly for a battery pack provided by this utility model has the following advantages:

[0016] This utility model provides a detachable circuit board assembly for a battery pack. All the individual module acquisition lines are first connected to a busbar circuit board. The busbar circuit board organizes the wire harnesses and signals, and then merges them into a single wire harness, which is connected to the front circuit board panel via a flexible circuit board (FPC). If there are a large number of battery cells, the flexible circuit board (FPC) is superior to traditional wire harnesses in terms of size and reliability. This design makes it more convenient to remove the front panel by simply plugging and unplugging one connector, and there will be no excessively long and messy wire harnesses inside the battery pack. The detachable circuit board assembly design at the front of the battery pack allows for maintenance of the circuit board without removing the battery pack from the container or disassembling the upper water-cooling plate of the battery pack. The circuit board panel is easy to remove. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of a first embodiment of a detachable circuit board assembly for a battery pack provided by this utility model;

[0018] Figure 2 for Figure 1 The diagram shows a cross-sectional view of the battery pack housing during testing.

[0019] Figure 3 for Figure 1 The diagram shows a top sectional view of the battery pack housing.

[0020] Figure 4 for Figure 3 The enlarged schematic diagram at point A is shown below;

[0021] Figure 5 A schematic diagram of the structure of a second embodiment of a detachable circuit board assembly for a battery pack provided by this utility model;

[0022] Figure 6 for Figure 5 The enlarged schematic diagram at point B is shown.

[0023] The following are the labels in the diagram: 1. Battery pack housing; 2. Circuit board panel; 3. Communication socket; 4. Fastener; 5. Sealing strip; 6. Single module acquisition line; 7. Busbar circuit board; 8. Flexible printed circuit board (FPC); 9. First connector; 10. Circuit board; 11. Communication line; 12. Second connector; 13. Extrusion device; 131. Extrusion plate; 132. Buffer pad; 133. Setting groove; 134. Moving cavity; 14. Buffer device; 141. Fixed column; 142. Moving block; 143. Spring. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] First Embodiment

[0026] Please refer to the following: Figure 1 , Figure 2 , Figure 3 and Figure 4 ,in, Figure 1 A schematic diagram of the structure of a first embodiment of a detachable circuit board assembly for a battery pack provided by this utility model; Figure 2 for Figure 1 The diagram shows a cross-sectional view of the battery pack housing during testing. Figure 3 for Figure 1 The diagram shows a top sectional view of the battery pack housing. Figure 4 for Figure 3 The enlarged schematic diagram at point A is shown. A detachable circuit board assembly for a battery pack includes: a battery pack housing 1;

[0027] Circuit board panel 2, the circuit board panel 2 is disposed in the middle of one side of the surface of the battery pack housing 1, the circuit board 10 is disposed in the middle of the surface of the circuit board panel 2, communication sockets 3 are disposed on both sides of the surface of the circuit board panel 2, a communication line 11 is disposed on one side of the communication socket 3, and a second connector 12 is fixedly installed on one side of the surface of the circuit board 10.

[0028] A single-module acquisition line 6 is provided, and multiple single-module acquisition lines 6 are respectively disposed inside the battery pack housing 1. The multiple single-module acquisition lines 6 are connected together by a busbar circuit board 7. A flexible circuit board FPC8 is provided on one side of the busbar circuit board 7, and a first connector 9 is fixedly connected to one side of the flexible circuit board FPC8.

[0029] A sealing strip 5 is provided on one side of the surface of the circuit board panel 2, and fasteners 4 are provided on all four sides of the other side of the surface of the circuit board panel 2.

[0030] The other end of the communication line 11 is disposed on the surface of the circuit board 10.

[0031] The first connector 9 and the second connector 12 are connected.

[0032] The circuit board 10 is mounted on the surface of the circuit board panel 2 by bolts.

[0033] The working principle of the detachable circuit board assembly for a battery pack provided by this utility model is as follows:

[0034] During operation, the circuit board panel 2 is first installed to the battery pack housing 1 via the sealing strip 5 and fasteners 4. The circuit board panel 2 can be removed by removing the fasteners 4 to expose the internal circuit board 10, which is convenient for debugging or replacing the circuit board 10.

[0035] A communication socket 3 is also installed on the circuit board panel 2. The communication socket 3 is connected to the circuit board 10 through a communication line 11. The communication socket 3 can also be integrated into the circuit board 10 as a whole.

[0036] Each module has a data acquisition harness, thus setting up multiple single-module data acquisition lines 6. Each single-module data acquisition line 6 includes voltage acquisition, temperature acquisition, and equalization functions. Each cell must have voltage acquisition, temperature acquisition, and equalization functions.

[0037] All single-module acquisition lines 6 are first connected to the busbar circuit board 7. The busbar circuit board 7 organizes the wires and signals, and then merges them into a single wire bundle. The bundle is connected to the front circuit board 10 through the flexible circuit board FPC8. It can be assembled through the first connector 9 and the second connector 12. When disassembling the circuit board panel 2, you only need to plug and unplug the first connector 8 from the surface of the second connector 12, which is more convenient and will not result in too long and too many messy wire bundles inside the battery pack.

[0038] Compared with related technologies, the detachable circuit board assembly for a battery pack provided by this utility model has the following advantages:

[0039] This utility model provides a detachable circuit board assembly for a battery pack. All the individual module acquisition lines 6 are first connected to a busbar circuit board 7. The busbar circuit board 7 organizes the wire harnesses and signals, and then merges them into a single wire harness, which is connected to the front circuit board panel 2 via a flexible circuit board FPC8. If the number of battery cells is very large, the flexible circuit board FPC8 is superior to traditional wire harnesses in terms of size and reliability. This design makes it more convenient to remove the front panel by simply plugging and unplugging one connector, and there will be no excessively long and messy wire harnesses inside the battery pack. The detachable circuit board assembly design at the front of the battery pack allows for maintenance of the circuit board without removing the battery pack from the container or removing the upper water-cooling plate of the battery pack. The circuit board panel is easy to remove.

[0040] Second Embodiment

[0041] Please refer to the following: Figure 5 and Figure 6 Based on the detachable circuit board assembly of a battery pack provided in the first embodiment of this application, the second embodiment of this application proposes another detachable circuit board assembly of a battery pack. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0042] Specifically, the second embodiment of this application provides a detachable circuit board assembly for a battery pack, wherein a buffer device 14 is fixedly installed on both sides of the outer surface of the circuit board panel 2, a pressing device 13 is sleeved on one side of the outer surface of the buffer device 14, and the circuit board 10 is disposed on the surface of the pressing device 13.

[0043] The buffer device 14 includes a fixed post 141, a movable block 142, and a spring 143. The fixed post 141 is fixedly installed on the surface of the circuit board panel 2, the movable block 142 is fixedly installed on one end of the fixed post 141, and the spring 143 is sleeved on one side of the outer surface of the fixed post 141.

[0044] The extrusion device 13 includes an extrusion plate 131, a buffer pad 132, a setting groove 133, and a moving cavity 134. The extrusion plate 131 is slidably installed on one side of the outer surface of the fixed column 141. The buffer pad 132 is fixedly connected to one side of the outer surface of the extrusion plate 131. The two setting grooves 133 are respectively opened on both sides of the outer surface of the extrusion plate 131. The moving cavity 134 is connected to one side of the setting groove 133.

[0045] The fixed post 141 extends into the interior of the sliding groove 133 and is connected to the moving block 142. The moving block 142 is inside the moving cavity 134. The spring 143 is sleeved on the outer surface of the fixed post 141. One end of the spring 143 is fixedly connected to the circuit board panel 2, and the other end is connected to the extrusion plate 131.

[0046] The working principle of the detachable circuit board assembly for a battery pack provided by this utility model is as follows:

[0047] During operation, the restoring force of the spring 143 first pushes the compression plate 131. When the circuit board 10 is subjected to vibration, it compresses the buffer pad 132. The restoring force of the buffer pad 132 and the restoring force of the spring 143 maintain the stability of the circuit board 10 during installation.

[0048] Compared with related technologies, the detachable circuit board assembly for a battery pack provided by this utility model has the following advantages:

[0049] This utility model provides a detachable circuit board assembly for a battery pack. By installing a pressing device 13 and a buffer device 14 on the surface of the circuit board panel 2, and attaching a buffer pad 132 to the surface of the circuit board 10, the circuit board 10 can buffer the impact force when it is subjected to vibration, reduce the impact force on the circuit board 10, and maintain the stability of the circuit board installation.

[0050] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A detachable circuit board assembly for a battery pack, characterized in that, include: Battery pack housing; The circuit board panel is located in the middle of one side of the surface of the battery pack housing. A circuit board is located in the middle of the surface of the circuit board panel. Communication sockets are located on both sides of the surface of the circuit board panel. A communication line is located on one side of the communication socket. A second connector is fixedly installed on one side of the surface of the circuit board. A single-module acquisition line is provided, and multiple single-module acquisition lines are respectively disposed inside the battery pack housing. The multiple single-module acquisition lines are connected together by a busbar circuit board. A flexible circuit board (FPC) is provided on one side of the busbar circuit board, and a first connector is fixedly connected to one side of the flexible circuit board (FPC).

2. The detachable circuit board assembly for a battery pack according to claim 1, characterized in that, A sealing strip is provided on one side of the circuit board panel surface, and fasteners are provided on all four sides of the other side of the circuit board panel surface.

3. The detachable circuit board assembly for a battery pack according to claim 1, characterized in that, The other end of the communication line is disposed on the surface of the circuit board.

4. The detachable circuit board assembly for a battery pack according to claim 1, characterized in that, The first connector and the second connector are connected.

5. A detachable circuit board assembly for a battery pack according to claim 1, characterized in that, Both sides of the outer surface of the circuit board panel are fixedly installed with buffer devices, and one side of the outer surface of the buffer device is fitted with a pressing device. The circuit board is disposed on the surface of the pressing device.

6. A detachable circuit board assembly for a battery pack according to claim 5, characterized in that, The buffer device includes a fixed post, a movable block, and a spring. The fixed post is fixedly installed on the surface of the circuit board panel, the movable block is fixedly installed at one end of the fixed post, and the spring is sleeved on one side of the outer surface of the fixed post.

7. A detachable circuit board assembly for a battery pack according to claim 6, characterized in that, The extrusion device includes an extrusion plate, a buffer pad, a set groove, and a moving cavity. The extrusion plate is slidably installed on one side of the outer surface of the fixed column, the buffer pad is fixedly connected to one side of the outer surface of the extrusion plate, the two set grooves are respectively opened on both sides of the outer surface of the extrusion plate, and the moving cavity is connected to one side of the set groove.

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