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:
Dec. 18, 2012
Filed:
Jun. 04, 2008
Jun Asakura, Osaka, JP;
Takuya Nakashima, Osaka, JP;
Toshiyuki Nakatsuji, Hyogo, JP;
Masato Fujikawa, Osaka, JP;
Jun Asakura, Osaka, JP;
Takuya Nakashima, Osaka, JP;
Toshiyuki Nakatsuji, Hyogo, JP;
Masato Fujikawa, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A battery internal short-circuit detection apparatus includes: a voltage detection unit for detecting a terminal voltage of the battery; a current detection unit for detecting a discharging current of the battery; a voltage drop and recovery detection unit for detecting a momentary voltage drop of the battery and a recovery from the voltage drop, in response to a result of detection performed by the voltage detection unit; and a determination unit for determining that an internal short circuit has occurred, when a maximum value of the discharging current detected by the current detection unit between the voltage drop and the recovery is equal to or lower than a threshold current.