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. 24, 2011
Filed:
Mar. 19, 2008
Kazuhiko Funabashi, Hitachinaka, JP;
Nobuhiro Takano, Hitachinaka, JP;
Eiji Nakayama, Hitachinaka, JP;
Hiroyuki Hanawa, Hitachinaka, JP;
Atsushi Sumi, Hitachinaka, JP;
Keita Saitou, Hitachinaka, JP;
Kazuhiko Funabashi, Hitachinaka, JP;
Nobuhiro Takano, Hitachinaka, JP;
Eiji Nakayama, Hitachinaka, JP;
Hiroyuki Hanawa, Hitachinaka, JP;
Atsushi Sumi, Hitachinaka, JP;
Keita Saitou, Hitachinaka, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
A battery pack includes a plurality of lithium battery cells, an analog thermo sensing member, and an analog switch. The analog thermo sensing member detects, in an analog form, a battery temperature of at least one of the plurality of lithium battery cells, and outputs an output preventing signal if the battery temperature is over a first predetermined temperature. The analog switch element is the plurality of lithium battery cells in series, and is switched, based on the output preventing signal, to a state in which a current is prevented from flowing in the plurality of lithium battery cells.