Gearboxes for electric vehicle drivetrains and methods of shifting thereof
US12031628B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2024 |
| Grant date | Jul 9, 2024 |
| Priority date | — |
| Expiry date | Jan 3, 2044 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/307
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Described herein is a gearbox for an electric vehicle drivetrain unit comprising a gearbox enclosure, a support rod, a first piston, a second piston, and various hydraulic fluid passages. The support rod extends into the gearbox enclosure and at least partially protrudes/extends into the first and second pistons. The first piston, second piston, and support rod are fluidically connected with the hydraulic fluid passages such that when the gearbox is in a neutral gear, pressurized hydraulic fluid forces the first piston and the second piston against the support rod. When the gearbox is in a first gear, pressurized hydraulic fluid forces the support rod against the gearbox enclosure either directly or through the first piston. When the gearbox is in a second gear, pressurized hydraulic fluid forces the support rod against the gearbox enclosure directly or through the second piston. Also described are electric vehicles and shifting methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.