Battery integrated busbar PCB collecting plate

Abstract

The utility model provides a kind of battery integrated busbar PCB collection board, PCB collection board, integrated busbar PCB collection board adopts double-layer structure, through first threaded hole lower and module support fixed, upper and battery pack fixed beam fixed, improve battery pack overall space utilization, energy density and structural stability, connect with entire external isolation with battery module and high voltage, improve battery pack sampling stability and high voltage safety;And battery voltage sampling and temperature sampling line can all pass through PCB collection board internal wiring, with information acquisition connector connection, after by signal acquisition connector output voltage and temperature information, pass through wiring harness and BMS connection, can effectively avoid battery pack sampling wiring harness external, with other components friction damage caused battery pack short circuit even fire explosion risk, reduce the length of collection wiring harness simultaneously, improve the precision and reliability of battery pack sampling data.

Description

Technical Field

[0001] This utility model relates to the field of PCB board technology, and in particular to a battery integrated busbar PCB acquisition board. Background Technology

[0002] With the development of various technologies and applications in the new energy field, and the acceleration of the national electrification pace, lithium batteries are gradually being used in consumer electronics, energy storage, and electric vehicles. Motorcycles, as a type of two-wheeled vehicle, are also gradually becoming electrified. However, due to their unique characteristics, electric motorcycles place higher demands on the energy density and rate performance of their battery packs. Furthermore, because the battery packs of electric motorcycles are exposed and come into contact with the rider, higher requirements are placed on the high-voltage safety of electric motorcycles.

[0003] In existing technologies, voltage sampling in electric motorcycle battery packs is typically achieved by soldering wire harnesses to tabs or connectors. On one hand, this requires more space in the battery pack to accommodate the sampling wire harness, thus reducing the energy density of the battery pack. On the other hand, while the input and output ends of the sampling wires generally have some slack to prevent the harness from being pulled or damaged during battery pack operation, friction between the harness and other components can still occur, leading to harness damage, short circuits, or even fires and explosions. This compromises the overall electrical safety of the battery pack, potentially damaging it or even threatening the rider's life. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a battery integrated busbar PCB acquisition board to solve the technical problem that in existing technologies, the wiring harness may rub against other components during the operation of the battery pack, leading to damage to the wiring harness, which in turn may cause short circuits or even fires and explosions in the battery pack. This compromises the overall electrical safety of the battery pack, resulting in damage to the battery pack or, in severe cases, a threat to the life safety of the rider.

[0005] This utility model provides a battery integrated busbar PCB acquisition board, including:

[0006] The PCB acquisition board adopts a double-layer PCB structure. At least two rows of symmetrical electrode holes are evenly distributed on the surface of the PCB acquisition board. Between each pair of electrode holes in any row, there is a battery connection aluminum busbar and a first threaded hole. The first threaded hole penetrates the PCB acquisition board. At any end of the electrode holes in any row, there is also an L-shaped input / output aluminum busbar. The horizontal end of the input / output aluminum busbar is also provided with a second threaded hole that penetrates the PCB acquisition board.

[0007] Optionally, the electrode hole includes:

[0008] Its length is 1.2 to 1.3 times the length of the tab, and its width is 3 to 4 times the thickness of the tab.

[0009] Optionally, the PCB acquisition board includes:

[0010] T-shaped notches are provided on both sides of the electrode hole, which are evenly distributed along the electrode hole.

[0011] Optionally, the input / output aluminum busbar includes:

[0012] The horizontal ends of the device and the PCB acquisition board are provided with corresponding limiting through holes.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The integrated busbar PCB acquisition board adopts a double-layer structure. It is fixed to the module bracket at the bottom and to the battery pack fixing beam at the top through the first threaded hole. This improves the overall space utilization, energy density, and structural stability of the battery pack. It isolates the battery module and high-voltage electrical connections from the outside, improving the sampling stability and high-voltage electrical safety of the battery pack. Furthermore, both the battery voltage and temperature sampling lines can be routed through the internal traces of the PCB acquisition board and connected to the information acquisition connector. The voltage and temperature information are then output through the signal acquisition connector and connected to the BMS through a wiring harness. This effectively avoids the risk of short circuits or even fires and explosions caused by friction damage to the battery pack sampling wiring harness from external components. At the same time, it reduces the length of the acquisition wiring harness and improves the accuracy and reliability of the battery pack sampling data. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Explanation of icon numbers:

[0017] 1. PCB acquisition board; 2. Pin hole; 3. Information acquisition connector; 4. Battery connection aluminum busbar; 5. First threaded hole; 6. Input / output aluminum busbar; 7. Second threaded hole; 8. T-shaped notch; 9. Limiting through hole; 10. Third threaded hole.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the technical solutions of this utility model are further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it.

[0020] See Figure 1This utility model provides a battery integrated busbar PCB acquisition board 1, comprising:

[0021] The PCB acquisition board 1 adopts a double-layer PCB structure. At least two rows of symmetrical tab holes 2 are evenly distributed on the surface of the PCB acquisition board 1. An information acquisition connector 3 is provided between the two rows of tab holes 2. A battery connection aluminum busbar 4 and a first threaded hole 5 are respectively provided between each pair of tab holes 2 in any row. The first threaded hole 5 is provided through the PCB acquisition board 1. An L-shaped input / output aluminum busbar 6 is also provided at each end of the tab holes 2 in any row. A second threaded hole 7 is also provided at the horizontal end of the input / output aluminum busbar 6, which is provided through the PCB acquisition board 1.

[0022] In this embodiment, the integrated busbar PCB acquisition board 1 adopts a double-layer structure. It is fixed to the module bracket at the bottom and to the battery pack fixing beam at the top through the first threaded hole 5, which improves the overall space utilization, energy density and structural stability of the battery pack. It isolates the battery module and high-voltage electrical connection from the entire external environment, which improves the sampling stability of the battery pack and the safety of high-voltage electrical connection.

[0023] Furthermore, both the battery voltage and temperature sampling lines can be routed through the internal traces of the PCB acquisition board 1 and connected to the information acquisition connector 3. The voltage and temperature information are then output through the signal acquisition connector and connected to the BMS via the wiring harness. This effectively avoids the risk of short circuits or even fires and explosions in the battery pack caused by external battery pack sampling wiring harnesses and friction damage to other components. At the same time, it reduces the length of the acquisition wiring harness and improves the accuracy and reliability of the battery pack sampling data.

[0024] In addition, the battery connecting aluminum busbar 4 and the PCB acquisition board 1 are integrated by hot pressing, which improves the overall structural strength, space utilization and energy density of the battery pack. The width of the battery connecting aluminum busbar 4 is less than the distance between adjacent tab holes 2, which can make the bending angle of the tabs after welding on the battery connecting aluminum busbar 4 less than 90°, thus avoiding damage to the tabs by pulling during operation.

[0025] Furthermore, tab holes 2 are evenly distributed along the length of the PCB acquisition board 1 to provide stress relief positions for the PCB acquisition board 1 and improve the structural strength of the PCB acquisition board 1. At the same time, the battery connecting aluminum busbar 4 is integrated by hot pressing, and the battery cell tabs are welded to the aluminum busbar through the tab holes 2 to realize the electrical connection of the module. By integrating the battery connecting aluminum busbar 4 onto the PCB acquisition board 1, the input and output aluminum busbar 6 are fixed to the PCB acquisition board 1 by the bracket fixing post passing through the limiting through hole and screws, which improves the connection reliability and assembly efficiency of the battery pack.

[0026] In another embodiment, the electrode hole 2 includes:

[0027] Its length is 1.2 to 1.3 times the length of the tab, and its width is 3 to 4 times the thickness of the tab.

[0028] See Figure 1 The length of the tab hole 2 is 1.2 to 1.3 times the length of the tab, and the width is 3 to 4 times the thickness of the tab, which facilitates the assembly efficiency of the tab through.

[0029] In another embodiment, the PCB acquisition board 1 includes:

[0030] T-shaped notches 8 are provided on both sides of the electrode ear hole 2, which are evenly distributed along the sides.

[0031] See Figure 1 A T-shaped notch 8 is provided for the arrangement of two-way temperature sampling NTC probes. The NTC temperature probe is inserted through the T-shaped notch 8 and the battery bracket notch and placed on the cell side. The top of the T-shaped notch is provided with a power line for welding the NTC probe.

[0032] In another embodiment, the input / output aluminum busbar 6 includes:

[0033] The horizontal ends of the board and the PCB acquisition board 1 are provided with corresponding limiting through holes 9.

[0034] See Figure 1 By setting a limiting through hole 9 for the protrusion of the fixing column of the battery bracket, the input and output aluminum busbars 6 are further prevented from shifting under the operating conditions of the battery pack.

[0035] In another embodiment, the input / output aluminum busbar 6 includes:

[0036] A third threaded hole 10 is also provided on the side of its upright end that is perpendicular to the PCB acquisition board 1.

[0037] See Figure 1 The input / output aluminum busbar 6 is fixed to the bridging copper busbar through the third threaded hole 10 to realize the electrical connection of the battery module. When connecting, the connecting part faces the inside of the battery module to avoid interference with the fixing beam and other components on the edge of the module, thereby improving the overall electrical safety of the battery pack.

[0038] In another embodiment, the input / output aluminum busbar 6 includes:

[0039] Its upright end, which is horizontal to the side of the PCB acquisition board 1, is designed with rounded corners.

[0040] See Figure 1 By setting it to a rounded corner structure, assembly efficiency can be improved.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A battery integrated busbar PCB acquisition board, characterized in that, include: The PCB acquisition board (1) adopts a double-layer PCB structure. At least two rows of symmetrical tab holes (2) are evenly distributed on the surface of the PCB acquisition board (1). An information acquisition connector (3) is provided between the two rows of tab holes (2) of the PCB acquisition board (1). A battery connection aluminum busbar (4) and a first threaded hole (5) are provided between each pair of tab holes (2) in any row. The first threaded hole (5) is provided through the PCB acquisition board (1). An L-shaped input / output aluminum busbar (6) is also provided at any end of the tab holes (2) in any row. A second threaded hole (7) is also provided at the horizontal end of the input / output aluminum busbar (6) through the PCB acquisition board (1).

2. The battery integrated busbar PCB acquisition board as described in claim 1, characterized in that, The electrode hole (2) includes: Its length is 1.2 to 1.3 times the length of the tab, and its width is 3 to 4 times the thickness of the tab.

3. The battery integrated busbar PCB acquisition board as described in claim 1, characterized in that, The PCB acquisition board (1) includes: T-shaped notches (8) are provided on both sides of the electrode ear hole (2) which are evenly distributed.

4. The battery integrated busbar PCB acquisition board as described in claim 1, characterized in that, The input / output aluminum busbar (6) includes: The horizontal ends of the board and the PCB acquisition board (1) are provided with corresponding limiting through holes (9).

5. The battery integrated busbar PCB acquisition board as described in claim 1, characterized in that, The input / output aluminum busbar (6) includes: A third threaded hole (10) is also provided on the side of its upright end that is perpendicular to the PCB acquisition board (1).

6. The battery integrated busbar PCB acquisition board as described in claim 1, characterized in that, The input / output aluminum busbar (6) includes: Its upright end, which is horizontal to the side of the PCB acquisition board (1), is designed with rounded corners.

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