Power supply device, electric vehicle and power storage device provided with said power supply device, and fastening member for power supply device
US12155081B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 24, 2019 |
| Grant date | Nov 26, 2024 |
| Priority date | — |
| Expiry date | Jun 23, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply device includes a battery stack body including a plurality of secondary battery cells are stacked, a pair of end plates covering both end surfaces of the battery stack body, and a plurality of fastening members each disposed on an opposing side surface of the battery stack body to fasten the end plates to each other. Fastening member includes end-part fastening parts fixed to the end plates at both ends in a longer direction, and intermediate coupling part coupling end-part fastening parts to each other, and intermediate coupling part has a plate shape extending along a side surface of the battery stack body, and includes a plurality of rows of coupling bars formed in a wave shape in front view of fastening member. At the time of expansion of the secondary battery cells, the power supply device elastically deforms coupling bar in a plane along the side surface of the battery stack body so that intermediate coupling part stretches in the stack direction of the secondary battery cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.