一种锂离子电芯连接结构
By adopting a design of connecting busbars and buffer elastic plates in lithium-ion battery packs, the stability problem of the connection structure under vibration is solved, achieving stable connection and shock resistance, simplifying the maintenance process, and improving heat dissipation performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN FEIXUN TECHNOLOGY CO LTD
- Filing Date
- 2025-08-04
- Publication Date
- 2026-07-17
AI Technical Summary
The existing connection structure of lithium-ion battery packs has poor connection stability under continuous vibration, bolts are prone to breakage, adjustment is difficult, and the shock resistance is not good.
The system employs a buffer structure consisting of connecting busbar one and connecting busbar two, combined with a buffer elastic plate and a claw seat. Through the cooperation of the movable connecting pole and the claw seat, elastic buffering and axial movement are achieved, avoiding bolt fixing and enhancing connection stability and seismic performance.
It improves the connection stability of lithium-ion battery packs under vibration conditions, reduces the probability of connection disconnection, simplifies the maintenance process, reduces after-sales costs, and improves heat dissipation through the heat-conducting plate.
Smart Images
Figure CN224520119U_ABST
Abstract
Claims
1. A lithium-ion battery cell connection structure, characterized by: It includes a connection assembly (3) disposed at the connection of several cylindrical cells (1), and a fixed frame (2) is disposed on the outer ring of several cylindrical cells (1). The connection assembly (3) has a first connection busbar (4) and a second connection busbar (5). The second connecting busbar (5) is installed inside the first connecting busbar (4). The two ends of the first connecting busbar (4) are respectively connected to the inner side of the fixed frame (2). The cylindrical cells (1) are divided into upper and lower groups, and each group of cylindrical cells (1) is on the same vertical line. The upper and lower opposite surfaces of the cylindrical cells (1) are connected to connecting poles (8). The end of the connecting pole (8) away from the cylindrical cells (1) is movably installed with a docking pole (9). The ends of the first connecting busbar (4) and the second connecting busbar (5) that are far away from each other are fixedly connected with a claw seat (6) that is compatible with the docking pole (9). The inside of the claw seat (6) is provided with several arc claws (7).
2. The lithium-ion battery cell connection structure of claim 1, wherein: The docking pole (9) is inserted into the claw seat (6), and the outer ring of the docking pole (9) is in contact with several arc claws (7).
3. The lithium-ion battery cell connection structure of claim 2, wherein: The arc-shaped claws (7) are elastically set, and the arc-shaped claws (7) are arranged at equal intervals inside the claw seat (6).
4. The lithium-ion battery cell connection structure of claim 1, wherein: The connecting busbar 1 (4) and connecting busbar 2 (5) are provided with a buffer elastic plate (10), which is made of insulating material and has a wavy shape.
5. The lithium-ion battery cell connection structure of claim 4, wherein: Both the first connecting busbar (4) and the second connecting busbar (5) are made of conductive material. The interior of the first connecting busbar (4) and the second connecting busbar (5) is silver-plated, and the outer ring of the first connecting busbar (4) and the second connecting busbar (5) is coated with a boron nitride insulating coating.
6. The lithium-ion battery cell connection structure of claim 1, wherein: A heat-conducting plate (11) is provided on the outer ring of the connecting busbar 1 (4) and the connecting busbar 2 (5), and a number of heat dissipation fins are provided on the side of the heat-conducting plate (11) away from the connecting busbar 1 (4) and the connecting busbar 2 (5).
7. A lithium-ion cell connection structure according to claim 4, characterized in that: The length of the buffer elastic plate (10) matches the size of the connecting busbar one (4) and the connecting busbar two (5), and the upper and lower ends of the buffer elastic plate (10) abut against the upper and lower opposite surfaces of the connecting busbar one (4) and the connecting busbar two (5), respectively.