Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
POWER TOOL AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2019/201300
Kind Code:
A1
Abstract:
The present invention relates to a power tool and a control method. The power tool comprises: a battery connecting part, wherein the battery connecting part is used for connecting a first battery pack and a second battery pack in a detachable manner, and a rated output voltage of the first battery pack is greater than a rated output voltage of the second battery pack; an electric motor serving as a power source; a driving unit located between the battery connecting part and the electric motor, and comprising a power switch tube for driving the operation of the electric motor; and a control unit for outputting a control signal to a control end of the power switch tube, and enabling the electric motor to be adapted to the rated output voltage of the first battery pack or the second battery pack by adjusting a duty cycle of the control signal so that a rotational speed of the electric motor is equal to a pre-set rotational speed, wherein a rated voltage of the electric motor is lower than at least one of the rated output voltage of the first battery pack and the second battery pack.

Inventors:
ZHANG, Chuanbing (No. 18 Dongwang Road, Industrial ParkSuzhou, Jiangsu 3, 215123, CN)
LU, Jun (No. 18 Dongwang Road, Industrial ParkSuzhou, Jiangsu 3, 215123, CN)
ZHONG, Hongfeng (No. 18 Dongwang Road, Industrial ParkSuzhou, Jiangsu 3, 215123, CN)
Application Number:
CN2019/083240
Publication Date:
October 24, 2019
Filing Date:
April 18, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
POSITEC POWER TOOLS (SUZHOU) CO., LTD. (No. 18 Dongwang Road, Industrial ParkSuzhou, Jiangsu 3, 215123, CN)
International Classes:
H02P7/29; H02J7/00
Foreign References:
CN105337319A2016-02-17
CN105337319A2016-02-17
CN102763304A2012-10-31
CN101924379A2010-12-22
US5028858A1991-07-02
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (16th Fl, Block A Corporate Square,No.35 Jinrong Street, Beijing 3, 100033, CN)
Download PDF: