Title:
DRIVING DEVICE AND CONTROL METHOD FOR ELECTRIC CAR PROVIDED WITH HYBRID BATTERY
Document Type and Number:
Japanese Patent JP3487952
Kind Code:
B2
Abstract:
PURPOSE: To provide a battery capable of dealing with an output demand in the wide range of a low load to a high load by compensating for the weak point of a secondary battery or a normal temperature type fuel cell as battery for an electric car.
CONSTITUTION: A d.c. power supply is constituted of a power battery 2 a secondary battery and connected to an electric motor and an energy battery 1 comprising a fuel cell and connected in parallel to the power battery 2 through an energy battery control switch. A booster circuit 7 is controlled on the basis of the current or the voltage of one of the power battery 2, the energy battery 1 and an electric motor 14, and a battery current/voltage control means for maintaining the voltage of the d. c. power supply within a predetermined range and a charging control means by which the charging from the energy battery to the power battery 2 is performed when a key switch 15 is turned off and the charging quantity of the power battery 2 is not more than a predetermined value and the charging is stopped when the charging quantity is larger than the predetermined value are provided.
Inventors:
Shotaro Naito
Application Number:
JP8943595A
Publication Date:
January 19, 2004
Filing Date:
April 14, 1995
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H01M8/00; B60K6/20; B60K6/28; B60K6/32; B60L11/18; B60L15/02; B60W10/08; B60W10/26; B60W10/28; B60W20/00; H01M8/04; H01M10/44; H01M16/00; H02J7/00; H02J7/34; (IPC1-7): B60L11/18; H01M8/00
Domestic Patent References:
| JP50152423A | ||||
| JP63277470A | ||||
| JP233863A | ||||
| JP2168802U | ||||
| JP6124720U |
Attorney, Agent or Firm:
Yukihiko Takada