Patent · US Active

Hydraulic-electric regenerative energy storage system

US8297198B2 · kind B2 · utility

9Cited by

14References

1Claims

0Family size

Assignee

The United States of America as Represented by the Administrator of the U.S. Environmental Protection Agency · US

Inventor

David H. Read · Chippenham, GB

Key dates

Filing date	Feb 24, 2010
Grant date	Oct 30, 2012
Priority date	—
Expiry date	Feb 26, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T90/14
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A hydraulic energy storage system (comprising a hydraulic pump/motor, a high pressure hydraulic accumulator, a low pressure hydraulic accumulator/reservoir, and interconnecting hydraulic lines) is incorporated into a EV, HEV, or PHEV to provide hydraulic regenerative braking and propulsive assistance for the vehicle. Implementation of the low cost and long-lasting hydraulic energy storage system in the vehicle, together with the electric energy storage system (comprising a motor/generator and battery pack) of the vehicle, allows significantly reduced demands and higher operating efficiencies for the battery pack, thereby facilitating a more cost-effective, efficient and/or durable overall energy storage system for the vehicle.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.