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 (JP)
YAMAGUCHI SATOSHI (JP)
YAMAGUCHI SATOSHI (JP)
Application Number:
PCT/JP2019/002482
Publication Date:
September 12, 2019
Filing Date:
January 25, 2019
Export Citation:
Assignee:
KOKI HOLDINGS CO LTD (JP)
International Classes:
H02J7/00; B25F5/00; H01M10/44; H01M10/48; H01M50/247; H02H3/087; H01M50/572
Foreign References:
| JP2011067004A | 2011-03-31 | |||
| JP2014023271A | 2014-02-03 | |||
| JP2007536098A | 2007-12-13 | |||
| JPH08153544A | 1996-06-11 |
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