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Patent Searching and Data


Title:
ELECTRIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/031273
Kind Code:
A1
Abstract:
Provided is an electric device capable of quickly distinguishing which, out of a battery pack and a main body, has had an error occur therein. An electric tool (50) has an LED light (58) that notifies errors inside the electric tool (50). The LED light (58) illuminates a workpiece. A residual capacity display means (17) in a battery pack (10) also serves as a battery-side notification unit that notifies errors inside the battery pack (10). A control unit (55) for the electric tool (50) causes the LED light (58) to flash slowly if a high-temperature error is detected in a switching element in an inverter circuit (65) and causes the LED light (58) to flash quickly if an overcurrent is detected. A control unit (15) for the battery pack (10) causes one LED in the residual capacity display means (17) to flash if over-discharge is detected and causes four LEDs in the residual capacity display means (17) to flash if a high-temperature error is detected in a secondary battery cell (11).

Inventors:
FUNABIKI Yusuke (1060, Takeda Hitachinaka-City Ibaraki, 02, 〒3128502, JP)
OGURA Masayuki (1060, Takeda Hitachinaka-City Ibaraki, 02, 〒3128502, JP)
TERANISHI Takuya (1060, Takeda Hitachinaka-City Ibaraki, 02, 〒3128502, JP)
WAKATABE Naoto (1060, Takeda Hitachinaka-City Ibaraki, 02, 〒3128502, JP)
Application Number:
JP2018/028259
Publication Date:
February 14, 2019
Filing Date:
July 27, 2018
Export Citation:
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Assignee:
KOKI HOLDINGS CO.,LTD. (15-1, Konan 2-chome Minato-k, Tokyo 20, 〒1086020, JP)
International Classes:
B25F5/00; B25B23/18; H01M2/10; H01M10/48
Foreign References:
JP2016022566A2016-02-08
JP2011255483A2011-12-22
JP2002210678A2002-07-30
JP2012095433A2012-05-17
JP2012051064A2012-03-15
JPH09309392A1997-12-02
JP2014180077A2014-09-25
JP2009151952A2009-07-09
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