发明名称 |
Power Tool and Battery Pack for Use in the Power Tool |
摘要 |
A power tool includes: a battery cell group including a plurality of secondary battery cells; a motor to which an electric power is supplied from the battery cell group through a switching element and a trigger switch; a current detector detecting a current value flowing in a current path; and a controller configured to receive a detection signal from the current detector and controls on/off operation of the switching element. If the current detector detects that the current value flowing in the battery cell group continuously exceeds a given value for a first time period, the controller conducts one of alarm display and alarm control for allowing an operator to recognize that a high load operation continues. If the current value continuously exceeds the given value for a second time period longer than the first time period, the controller turns off the switching element to interrupt the current path.
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申请公布号 |
US2013098646(A1) |
申请公布日期 |
2013.04.25 |
申请号 |
US201113805299 |
申请日期 |
2011.08.31 |
申请人 |
FUNABASHI KAZUHIKO;TAKANO NOBUHIRO;SHIMA YUKIHIRO;HITACHI KOKI CO., LTD. |
发明人 |
FUNABASHI KAZUHIKO;TAKANO NOBUHIRO;SHIMA YUKIHIRO |
分类号 |
B25F5/00;B23Q17/00;H01M10/42 |
主分类号 |
B25F5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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