The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2026
Filed:
Aug. 06, 2024
Delta Electronics, Inc., Taoyuan City, TW;
Shih-Chung Wang, Taoyuan City, TW;
Cheng-Yu Shu, Taoyuan City, TW;
Che-Min Chen, Taoyuan City, TW;
Chien-Lung Liu, Taoyuan City, TW;
DELTA ELECTRONICS, INC., Taoyuan City, TW;
Abstract
An electric tool is powered by a battery. An electric tool includes a motor, a charging and discharging control circuit and a motor control circuit. Charging and discharging control circuit is configured to couple to a power adapter. Charging and discharging control circuit includes a direct power supply path connected to the power adapter and battery, and is configured to detect an input current from power adapter and a first load current flowing to battery and to calculate an upper limit of a second load current that can be provided to motor according to a difference between the input current and the first load current. Motor control circuit is coupled between charging and discharging control circuit and motor, and is configured to control a speed or a torque of motor according to the upper limit of second load current.