电池包涂胶结构
By combining the I-shaped cold plate with the adhesive coating structure on the sides and top of the battery cell, along with the shrinkage expansion layer and a reasonable adhesive coating design, the problems of battery pack space utilization and connection reliability are solved, achieving a highly efficient battery pack design.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SVOLT ENERGY TECHNOLOGY CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-07-17
AI Technical Summary
The existing CTP structure has a low overall volume utilization rate of the battery pack, and the excessive adhesive area in the CTB/CTC design affects airflow. It is necessary to improve space utilization and rigidity, while ensuring the reliability of cell connection.
The system employs an I-shaped cold plate bonded to the sides and top of the battery cell using an adhesive structure. Combined with a shrinkage expansion layer and a reasonable adhesive area design, the connection between the battery cell and the casing is optimized. Thermally conductive structural adhesive is used to ensure heat transfer and connection stability.
It improves the space utilization and overall performance of the battery pack, enhances the reliability of cell connection and heat dissipation efficiency, reduces the number of parts, and improves the energy density and overall performance of the battery pack.
Smart Images
Figure CN224520107U_ABST
Abstract
Claims
1. A battery pack rubber coating structure, characterized by, include: case; Cold-rolled steel plate, wherein the cold-rolled steel plate has an I-beam structure; The battery cell has two sides bonded to the cold plate by thermally conductive structural adhesive, and the top of the battery cell is bonded to the housing. The battery cell has windowed areas on its sides and top, and these windowed areas are coated with structural adhesive or thermally conductive structural adhesive.
2. The battery pack coating structure according to claim 1, wherein, The length of the adhesive coating on the side of the battery cell ranges from 35 mm to 40 mm, and the height of the adhesive coating on the side of the battery cell ranges from 65 mm to 70 mm. The length of the adhesive coating on the top of the battery cell ranges from 85 mm to 100 mm, and the width of the adhesive coating on the top of the battery cell ranges from 30 mm to 45 mm.
3. The battery pack coating structure according to claim 1, wherein, The sum of the total adhesive coating areas on the sides of the battery cell is less than the total area of the sides of the battery cell.
4. The battery pack coating structure according to claim 1, wherein, The area of the I-shaped cross-section of the cold plate matches the area of the windowed area on the side of the battery cell.
5. The battery pack coating structure according to claim 1, wherein, The adhesive coating area of the top window area of the battery cell accounts for 30% to 60% of the top area of the battery cell.
6. The battery pack coating structure according to any one of claims 1 to 5, characterized by, The adhesive coating thickness between the top of the battery cell and the casing is 0.5 mm to 1.2 mm, and the adhesive coating thickness between the side of the battery cell and the cold plate is 0.3 mm to 0.8 mm.
7. The battery pack coating structure according to any one of claims 1 to 5, characterized by, A shrinkage expansion layer is provided between adjacent battery cells to absorb the expansion force of the battery cells.
8. The battery pack coating structure according to claim 7, wherein, The thickness of the shrinkage expansion layer is 1.2 to 1.5 times the gap between adjacent cells, and the compression ratio of the shrinkage expansion layer is greater than or equal to 20%.
9. The battery pack coating structure of any one of claims 1-5, wherein, The bottom of the battery cell is equipped with a terminal post and an explosion-proof valve.