RECHARGEABLE BATTERY
Patent Information
- Application Number
- DE602024000126
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2023-06-05
- Filing Date
- 2024-03-22
- Publication Date
- 2025-05-14
- Estimated Expiration
- 2044-03-22
AI Technical Summary
Rechargeable lithium batteries with cylindrical cans face issues such as metal elution, increased electrical resistance, and reduced cycle-life at high temperatures, especially when the volume of the cylindrical can exceeds a certain threshold.
The solution involves controlling the volume of the cylindrical can and limiting the type and content of the electrolyte additive, specifically using a non-aqueous organic solvent with a lithium salt, a first additive represented by Chemical Formula 1, and a second additive represented by Chemical Formula 2, with the second additive's content controlled to less than 5 wt%.
This approach effectively suppresses metal elution, reduces resistance increases, and improves cycle-life at high temperatures, enhancing the overall high-temperature characteristics of the rechargeable lithium battery.