Control system and control method of handheld electric drill

Abstract

The invention provides a control system and a control method of a handheld electric drill. The handheld electric drill comprises an electric drill body, a mains supply access line, a battery charger and a battery, wherein the electric drill body comprises an outer shell and a drill chuck, a motor, a motor driving circuit, a rectification amplifying circuit and a single-chip microcomputer module are arranged inside the outer shell, the outer shell is divided into an electric drill handle and an electric drill machine body, a power conversion switch, a control switch and a power selection knob are arranged on the electric drill handle, a battery installing opening is formed in the lower end of the electric drill handle, a display screen is arranged on the electric drill machine body, a mainssupply jack is arranged at the tail end of the machine body, the output end of the motor driving circuit is electrically connected with the motor, and the power selection knob is electrically connected with the single-chip microcomputer module. According to the handheld electric drill, the working efficiency and the rotating speed of the electric drill can be visually observed by a user, moreover, a protecting effect on the electric drill is achieved, and meanwhile, the electric drill has two power supply methods to be selected, so that the use selectivity of the electric drill is improved.

Description

technical field [0001] The invention belongs to the field of electric power control, in particular to a control system and a control method of a hand-held electric drill. Background technique [0002] Electric drill is a kind of drilling tool we commonly use. Hand-held electric drill is our most common one. It is widely used in construction, decoration, home furnishing and other industries to drill holes on objects or penetrate objects. Hand-held electric drill is because of its convenience. Portable and easy to operate, it is well received by users. However, due to the long-term use of electric drills, people only judge whether the electric drill is good or bad by the rotation of the electric drill, and cannot intuitively observe the working status of the electric drill and whether the electric drill is in its safe state. Now there are many electric drills that have used rechargeable batteries and abandoned the use of mains connecting wires. In the past, the electric drills...

AI Technical Summary

Problems solved by technology

[0002] Electric drill is a kind of drilling tool we commonly use. Hand-held electric drill is our most common one. It is widely used in construction, decoration, home furnishing and other industries to drill holes on objects or penetrate objects. Hand-held electric drill is because of its convenience. Portable and easy to operate, it is well received by users. However, due to the long-term use of electric drills, people only judge whether the electric drill is good or bad by the rotation of the electric drill, and cannot intuitively observe the working status of the electric drill and whether the electric drill is in its safe state. Now there are many electric drills that have used rechargeable batteries and abandoned the use of mains connecting wires. In the past, the electric drills connected to the mains had to drag a long wire when used, which was very inconvenient to use. However, the battery The power supply efficiency of the electric drill is very small, and the working efficiency of the electric drill without direct power supply from the mains is high. The battery of some electric drills with batteries is not removable. After the power is used up, it must be charged, which delays the working time.

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