U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Battery charge control system for a hybrid vehicle driven by an electric motor and an internal combustion engine

Patent 5969624 Issued on October 19, 1999. Estimated Expiration Date: Icon_subject April 5, 2016. 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.

Patent References

3842287

System and method for charging electrochemical cells in series
Patent #: 4238721
Issued on: 12/09/1980
Inventor: DeLuca ,   et al.

Method of charge control for vehicle hybrid drive batteries
Patent #: 4313080
Issued on: 01/26/1982
Inventor: Park

Hybrid electric/ice vehicle drive system
Patent #: 4923025
Issued on: 05/08/1990
Inventor: Ellers

Electronic battery charger device and method
Patent #: 5055763
Issued on: 10/08/1991
Inventor: Johnson, et al.

Method for controlling the operation of a range extender for a hybrid electric vehicle
Patent #: 5264764
Issued on: 11/23/1993
Inventor: Kuang

Hybrid electric vehicle
Patent #: 5343970
Issued on: 09/06/1994
Inventor: Severinsky

Intelligent battery charger for electric drive system batteries Patent #: 5659240
Issued on: 08/19/1997
Inventor: King

Inventors

Application

No. 628185 filed on 04/05/1996

US Classes:

340/636.1, Battery180/65.2, Combined with nonelectric drive means307/9.1, VEHICLE MOUNTED SYSTEMS307/10.7, Battery protection307/17, Transformer connections307/18, Plural sources of supply307/102, STABILIZED, ANTI-HUNTING OR ANTIOSCILLATION SYSTEMS307/122, Direction of rotation340/648Motor

Examiners

Primary: Lefkowitz, Edward
Assistant: Woods, Davetta

Attorney, Agent or Firm

Foreign Patent References

  • 5-153703 JP. 06/19/1993
  • 5-219608 JP. 08/19/1993
  • 6-075027 JP. 03/19/1994
  • 6-295746 JP. 10/19/1994

International Class

G08B 091/00

Foreign Application Priority Data

1995-04-07 JP

Abstract

A hybrid vehicle comprises a motor driving the vehicle's wheels, multiple batteries supplying electric power to the motor, and a generator driven by an internal combustion engine to generate electric power for charging the batteries. Battery sensors detect terminal voltages of the batteries. An ECU controls a DC/DC converter to distribute electric power to independently charge the batteries through charge lines in accordance with the shortage of charge in respective batteries when excess electrical power is available from the generator even after a required amount of electrical power from the generator is used to rotate wheels.

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