Extruded hollow plate, battery box bottom plate, battery casing, and electric vehicle
US11923554B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Oct 17, 2019 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | Oct 21, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An extruded hollow plate and an electric vehicle battery casing formed by combining the extruded hollow plates. The extruded hollow plate has a plate-shaped body having a constant cross-section, a cavity is provided inside the plate-shaped body, a protrusion and/or a groove is provided at an end of the body, the protrusion is bent downward, the groove opens upwards as a hook, and the arc surfaces forming the protrusion and the groove each comprise at least two involute surfaces. Compared with the existing battery box manufacturing process of friction stir welding, the combining and bonding connection manner has the significant advantages of rapid production speed, a low device cost, high flatness, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.