Electric vehicle drive system

Patent 4629947 Issued on December 16, 1986. Estimated Expiration Date:

April 3, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Energy storage apparatus
Patent #: 4077678
Issued on: 03/07/1978
Inventor: Studer , et al.

Electrical vehicle and method
Patent #: 4218624
Issued on: 08/19/1980
Inventor: Schiavone

Flywheel electric transmission apparatus
Patent #: 4309620
Issued on: 01/05/1982
Inventor: Bock

Flywheel assisted electro-mechanical drive system
Patent #: 4423794
Issued on: 01/03/1984
Inventor: Beck

Inertial energy interchange system with energy makeup by combustion engine on demand Patent #: 4495451
Issued on: 01/22/1985
Inventor: Barnard

Inventors

Application

No. 06/719605 filed on 04/03/1985

US Classes:

318/161, WITH FLYWHEEL OR MASSIVE ROTARY MEMBER310/74, Inertia or fly-wheel device318/150With flywheel on generator or on motor

Examiners

Primary: Shoop, William M. Jr.
Assistant: Ro, Bentsu

Attorney, Agent or Firm

Lee, Jr.; Newton H.

International Classes

B60L 11/00 (20060101)
B60L 11/16 (20060101)
H02K 7/00 (20060101)
H02J 3/30 (20060101)
H02J 3/28 (20060101)
H02K 7/02 (20060101)

Abstract

An electric vehicle power system has a battery system to drive an electric drive motor. A flywheel is provided to supply energy to drive a generator for supplying electric current during peak loads on the battery-motor system and minimize current drain on the battery caused by acceleration of the vehicle. A microprocessor controls the system to apply needed current to the vehicle drive motor or motors. The flywheel is mounted in a vacuum housing which allows angular motion of the vehicle relative to the flywheel to avoid gyroscopic effects of the flywheel on the vehicle. A flywheel is mounted on a horizontal axis in a housing pivotal on a vertical axis, or the flywheel is mounted on a vertical axis in a housing pivotal on a horizontal axis. In one form, the flywheel is the rotor of the motor-generator.

Other References

Lustenader et al., "Flywheel Module for Electric Vehicle", Proceedings of the 12th Intersociety Energy Conversion Engineering Conference, Washington, D.C., pp. 269-274, 28 Aug.-2 Sep. 1977