Electrical storage system made of capacitors

Details Electrical storage system made of capacitors Electrical storage system made of capacitors

1998-10-15

2000-05-23

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

One cell or battery charges another

Vehicle battery charging

320103, H02J 700

Patent

active

060669365

ABSTRACT:
There is disclosed an electrical storage system comprising capacitors that are prevented from deteriorating at elevated temperatures. The electrical storage system is adapted for use in a hybrid electric vehicle or electric vehicle. The storage system comprises a bank of capacitors, a charger for charging the capacitor bank, a temperature switch connected across the capacitor bank and a discharge resistor connected in series with the temperature switch. The temperature switch is closed at a limit temperature (e.g., 70.degree. C.) at which deterioration of the capacitors can be neglected in a fully charged condition. When the temperature of the capacitor bank reaches the limit value, the temperature switch is closed. The capacitor bank is discharged via both the temperature switch and the discharge resistor. This suppresses deterioration of the capacitors at elevated temperatures.

REFERENCES:
patent: 4914393 (1990-04-01), Yoshido
patent: 5713426 (1998-02-01), Okamura
patent: 5734205 (1998-03-01), Okamura et al.
patent: 5880951 (1999-03-01), Inaba

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