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:
Nov. 12, 2013
Filed:
Mar. 15, 2011
Mitsuyoshi Kanoh, Saitama, JP;
Masahiko Amano, Ibaraki, JP;
Yukio Iida, Saitama, JP;
Yoshiki Hama, Saitama, JP;
Keizo Yamada, Saitama, JP;
Mitsuyoshi Kanoh, Saitama, JP;
Masahiko Amano, Ibaraki, JP;
Yukio Iida, Saitama, JP;
Yoshiki Hama, Saitama, JP;
Keizo Yamada, Saitama, JP;
Shin-Kobe Electric Machinery Co., Ltd., Tokyo, JP;
Abstract
A direct-current power source apparatus in which a lithium-ion capacitor unit is used as an electric storage system and which can fully utilize the lithium-ion capacitor unit and maintain the supply of electricity to a load is provided. An electric storage system includes a lithium-ion capacitor unit and a lead-acid battery connected in parallel with a load, and a voltage detecting section that detects the voltage of the lithium-ion capacitor unit. When the voltage detecting section detects that the voltage of the lithium-ion capacitor unit has reached a unit lower-limit voltage, a control circuit outputs a conduction signal for causing a switching circuit to get into a conductive state. When the switching circuit gets into a conductive state, the secondary battery supplies an electric power to a motor. At this time, the secondary battery charges the lithium-ion capacitor unit.