Title:
ELECTRIC TOOL AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/210790
Kind Code:
A1
Abstract:
An electric tool and a control method, the electric tool comprising a functional member (12), a motor (13), a power supply module (41), a driving circuit (43), and a controller (42). The driving circuit (43) comprises: a first driving terminal (43a) and a second driving terminal (43b) that are electrically connected to a first power supply terminal (41a) and second power supply terminal (41b) of the power supply module (41) respectively; a plurality of high side switches (Q1, Q3, Q5), high side terminals of the high side switches each being electrically connected to the first driving terminal (43a); a plurality of low side switches (Q2, Q4, Q6), low side terminals of the low side switches each being electrically connected to the second driving terminal (43b). The controller (42) is configured to: output a first control signal to one of the high side switches such that said one high side switch is in an on state or an off state; output a second control signal to one of the low side switches such that said one low side switch is in another on state or off state, wherein a low side terminal of said one high side switch is connected to a high side terminal of said one low side switch. The present electric tool may effectively inhibit the temperature rise of the driving circuit and reduce power loss.
More Like This:
| WO/2009/145470 | TOOL, GRINDING CUP TOOL, PROPELLER FOR GRINDING CUP TOOL AND CORE BIT |
| WO/2019/130981 | POWER TOOL |
| WO/2014/206700 | HOLDING DEVICE FOR A GRINDING MEANS |
Inventors:
WANG HONGWEI (CN)
YANG DEZHONG (CN)
SUN YONGAN (CN)
YANG DEZHONG (CN)
SUN YONGAN (CN)
Application Number:
PCT/CN2019/083863
Publication Date:
November 07, 2019
Filing Date:
April 23, 2019
Export Citation:
Assignee:
NANJING CHERVON IND CO LTD (CN)
International Classes:
B24B23/02; H02P6/08; B25F5/00
Foreign References:
| CN101689829A | 2010-03-31 | |||
| US20170373614A1 | 2017-12-28 | |||
| US20160322834A1 | 2016-11-03 | |||
| EP3296063A1 | 2018-03-21 | |||
| CN104467546A | 2015-03-25 | |||
| CN101758488A | 2010-06-30 | |||
| CN105291060A | 2016-02-03 | |||
| CN1449082A | 2003-10-15 | |||
| CN205646881U | 2016-10-12 |
Other References:
See also references of EP 3780379A4
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
Download PDF:
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