Controller built in electrical tool powered by Li-battery

Abstract

A controller built in Li-battery electric tool includes a microprocessor, a charging switch loop, a battery voltage detecting loop, a motor driving loop, and a power circuit. The charging switch loop is connected with the microprocessor and connected to a chargeable battery and a charging source, for controlling the charging status of the rechargeable battery. The battery voltage detecting loop is connected with the microprocessor for detecting the voltage of the rechargeable battery. The motor driving loop is connected with the microprocessor, having an electrically-controlled switch connected with a motor mounted inside the electric tool. The power circuit is connected with the microprocessor and the charging source, for providing the microprocessor with a power source. Thus, the rechargeable battery can be controlled while charged and discharged, and the present invention is of few components and small-sized as advantages.

Dependencies are inferred from the claim text.