Invention Grant
- Patent Title: Battery pack and cordless tool using the same
- Patent Title (中): 电池组和无绳工具使用相同
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Application No.: US12280948Application Date: 2007-02-28
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Publication No.: US08381829B2Publication Date: 2013-02-26
- Inventor: Hiroyuki Hanawa , Kiyoshi Kato , Kazuhiko Funabashi , Katsuhiro Oomori
- Applicant: Hiroyuki Hanawa , Kiyoshi Kato , Kazuhiko Funabashi , Katsuhiro Oomori
- Applicant Address: JP Tokyo
- Assignee: Hitachi Koki Co., Ltd.
- Current Assignee: Hitachi Koki Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: McDermott Will & Emery LLP
- Priority: JP2006-051489 20060228
- International Application: PCT/JP2007/054360 WO 20070228
- International Announcement: WO2007/100140 WO 20070907
- Main IPC: E21B1/14
- IPC: E21B1/14
Abstract:
A battery device is constituted by connecting such cell assemblies in parallel as each includes: a first cell group having a plurality of cells connected in series; a housing container for housing the first cell group; current detector housed in the container for detecting a current to flow through the first cell group; a switching element connected with the first cell group for turning ON/OFF the current to flow through the first cell group; and a controller for controlling the ON/OFF of the switching element in response to the output signal of the current detector.
Public/Granted literature
- US20090071675A1 BATTERY PACK AND CORDLESS TOOL USING THE SAME Public/Granted day:2009-03-19
Information query
