Power supply device and electric vehicle and power storage device using same, fastening member for power supply device, production method for power supply device, and production method for fastening member for power supply device
US12191514B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 24, 2019 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Oct 5, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The power supply device includes: a plurality of secondary battery cells each including a prismatic exterior can; a pair of end plates covering both end surfaces of a battery stack body in which the plurality of secondary battery cells are stacked; and a plurality of fastening members made of metal each having a plate shape extending in a stack direction of the plurality of secondary battery cells and disposed on an opposing side surface of the battery stack body to fasten the end plates to each other, in which each of the plurality of fastening members includes fastening portion fixed to the end plate at each of both ends in a longer direction, and intermediate portion coupling fastening portions with each other, and fastening portions is higher in strength than intermediate portion, and intermediate portion is higher in stretchability than fastening portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.