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Patent Searching and Data


Title:
POWER SUPPLY DEVICE AND SYSTEM COMPRISING POWER SUPPLY DEVICE AND ELECTRIC TOOL
Document Type and Number:
WIPO Patent Application WO/2019/171808
Kind Code:
A1
Abstract:
Provided is a power supply device in which the reliability of a voltage output is improved, and also provided is a system comprising the power supply device and an electric tool. The power supply device 1 is provided with: a secondary battery cell 2a; an output unit connected to an electric tool and supplying the power of the secondary battery cell 2a to the electric tool; and switching elements Q1, Q2 capable of interrupting a current path from the secondary battery cell 2a to the electric tool. The switching elements Q1 switches whether or not to interrupt the current path not by being controlled by a control circuit 12 but in accordance with whether the electric tool connected to the output unit has a shorting bar 59 or not.

Inventors:
KAWANO Yoshikazu (1060, Takeda Hitachinaka-City Ibaraki, 02, 〒3128502, JP)
YAMAGUCHI Satoshi (1060, Takeda Hitachinaka-City Ibaraki, 02, 〒3128502, JP)
Application Number:
JP2019/002482
Publication Date:
September 12, 2019
Filing Date:
January 25, 2019
Export Citation:
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Assignee:
KOKI HOLDINGS CO., LTD. (15-1, Konan 2-chome Minato-k, Tokyo 20, 〒1086020, JP)
International Classes:
H02J7/00; B25F5/00; H01M10/44; H01M10/48; H02H3/087
Foreign References:
JP2011067004A2011-03-31
JP2014023271A2014-02-03
JP2007536098A2007-12-13
JPH08153544A1996-06-11
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