电池组件
By optimizing the design of the tabs and terminals, the problems of complex structure and high cost of traditional lithium-ion batteries have been solved, achieving the effects of simplifying the process, reducing costs, and increasing energy density.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SVOLT ENERGY TECHNOLOGY CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional lithium-ion batteries have complex battery structures, high component and assembly costs, and wide range of electrode pre-welding process parameters leading to poor welding.
The design includes at least two pole groups, with a first pole lug and a second pole lug spaced apart at the end of each pole group. A first pole post and a second pole post are provided on the cover plate. The connecting section and welding section of the pole lug are bent and connected. The pole lug is directly welded to the pole post, which increases the pole post area and eliminates the need for connecting pieces, thus optimizing the size and layout of the pole lug and pole post.
It simplifies the battery assembly process, reduces costs, improves the utilization rate of internal battery space and energy density, and ensures welding quality.
Smart Images
Figure CN224520132U_ABST
Abstract
Claims
1. A battery assembly, comprising: include: At least two pole groups, each pole group having a first pole tab and a second pole tab spaced apart at its end; A cover plate is provided on the end of the electrode assembly, and at least a first electrode post and a second electrode post are provided on the cover plate at intervals. Each of the first electrode tabs and each of the second electrode tabs includes a connecting section and a welding section. The connecting section and the welding section are bent and connected. The welding section of each of the first electrode tabs is welded to the first electrode post, and the welding section of each of the second electrode tabs is welded to the second electrode post. The dimension A of the first pole post and the second pole post in the width direction of the cover plate is 30mm-40mm, and the distance C between the first pole post, the second pole post and the edge of the cover plate in the width direction of the cover plate is 5mm-10mm.
2. The battery assembly of claim 1, wherein, The width of each connecting segment is greater than the width of the corresponding welding segment.
3. The battery assembly of claim 1, wherein, The adjacent first electrode tabs and the second electrode tabs are spaced apart or partially overlapped on the corresponding first electrode post or second electrode post.
4. The battery assembly of claim 1, wherein, The height D of the first electrode and the second electrode is 26mm-32mm.
5. The battery assembly of claim 1, wherein, The folding height H of the first electrode and the second electrode is 2.5mm-3mm.
6. The battery assembly of claim 4, wherein, The width of the cover plate is B, and 0.6 ≤ A / B ≤ 0.
8.
7. The battery assembly of claim 6, wherein, The height D of the electrode decreases as A / B increases.
8. The battery assembly of claim 1, wherein, Each of the aforementioned welding sections is provided with flat welding marks and at least one laser welding mark.
9. The battery assembly according to claim 8, characterized in that, The flat weld mark has a length of 15mm-20mm on the cover plate and a width of 5mm-10mm on the cover plate. The laser weld mark has a length of 10-18 mm and a width of 1 mm-2.5 mm on the cover plate.
10. The battery assembly of claim 8, wherein, Each of the welding segments is welded to the corresponding first pole post or second pole post through two laser welding marks set at intervals.