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:
Feb. 26, 2013
Filed:
Sep. 01, 2010
Toshiyuki Koike, Chiba, JP;
Atsushi Sakurai, Chiba, JP;
Kazuaki Sano, Chiba, JP;
Wataru Sakamoto, Chiba, JP;
Fumihiko Maetani, Chiba, JP;
Shohei Tsukamoto, Chiba, JP;
Toshiyuki Koike, Chiba, JP;
Atsushi Sakurai, Chiba, JP;
Kazuaki Sano, Chiba, JP;
Wataru Sakamoto, Chiba, JP;
Fumihiko Maetani, Chiba, JP;
Shohei Tsukamoto, Chiba, JP;
Seiko Instruments Inc., Chiba, JP;
Abstract
Provided are a battery state monitoring circuit and a battery device that are capable of reliably controlling charge by a charger even if a voltage of a secondary battery drops to around 0 V. In the battery device provided with the battery state monitoring circuit, respective gate voltages of a P-type metal oxide semiconductor (PMOS) transistor and an N-type metal oxide semiconductor (NMOS) transistor, which together form a voltage detection circuit for detecting a voltage of around 0 V of the secondary battery, are applied by a voltage dividing resistor circuit that is connected across terminals of the secondary battery.