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. 18, 2014
Filed:
Jul. 30, 2010
Toshiyuki Nakatsuji, Hyogo, JP;
Toshiaki Ishikawa, Osaka, JP;
Yoshikazu Kiyohara, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A protection circuit having: a connecting terminal for receiving a voltage for charging a rechargeable battery; a switching element interposed between the connecting terminal and the rechargeable battery; a temperature fuse for blocking a conductive path between the connecting terminal and the switching element; a heater for melting the temperature fuse; a voltage detection unit for detecting a voltage relating to the conductive path; a first abnormality detection unit for detecting occurrence of a first abnormality that is pre-set as a recoverable abnormality; a second abnormality detection unit for detecting occurrence of a second abnormality that is pre-set as an abnormality on the basis of which the temperature fuse should be melted; a protection control unit for turning OFF the switching element when the first abnormality is detected by the first abnormality detection unit; and a heater control unit for executing a temperature fuse melting process of applying the voltage of the conductive path to the heater when the second abnormality is detected by the second abnormality detection unit and the voltage detected by the voltage detection unit is not less than a predetermined threshold voltage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile