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:
May. 23, 2000
Filed:
Oct. 15, 1998
Michio Okamura, Kanagawa, JP;
Akinori Mogami, Tokyo, JP;
Jeol Ltd., Tokyo, JP;
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.