The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 14, 2003
Filed:
Nov. 28, 2001
Kerry Eden Grand, Chesterfield, MI (US);
Vinod Reddy, Ocala, FL (US);
Ballard Power Systems Corporation, Dearborn, MI (US);
Abstract
Regenerative braking systems and methods for use in an electric vehicle, such as a battery-powered vehicle, a fuel cell vehicle, and a hybrid electric vehicle, including an electric motor system operable for generating torque to drive and control the electric vehicle, a traction controller operable for controlling the electric motor system, a brake system operable for generating torque to drive and control the electric vehicle, and a brake controller operable for controlling the brake system. Traction functions are strictly allocated to the traction controller, braking functions are strictly allocated to the brake controller, and the brake controller is subordinated to the traction controller. The regenerative braking systems and methods also including a communications system operable for transferring information between the traction controller and the brake controller.