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. 14, 2017
Filed:
Jan. 06, 2015
Makita Corporation, Anjo-shi, Aichi, JP;
Takayoshi Endo, Anjo, JP;
Shunpei Yamaji, Anjo, JP;
MAKITA CORPORATION, Anjo-shi, JP;
Abstract
A battery pack of one aspect of an embodiment of the present disclosure comprises a battery, a control unit, a pair of external terminals, a first current cut-off unit, and a second current cut-off unit. The control unit determines whether the first current cut-off unit and the second current cut-off unit are normal or abnormal when neither charge nor discharge of the battery is performed. When the first current cut-off unit and the second current cut-off unit are both normal, the control unit turns the first current cut-off unit and the second current cut-off unit to an energized state. When at least one of the first current cut-off unit and the second current cut-off unit is abnormal, the control unit turns the first current cut-off unit or the second current cut-off unit to a cut-off state.