Lithium battery tool capable of intelligently adjusting acting force

Abstract

The invention discloses a lithium battery tool capable of intelligently adjusting acting force, which comprises an on-off switch, a lithium ion battery pack, a three-phase brushless motor, an intelligent controller, a machine gear and an output shaft, wherein the intelligent controller is electrically connected with the on-off switch, the lithium ion battery pack and the three-phase brushless motor, the current current can be obtained through the voltage difference between the two ends of a precision resistor collected in real time, the commutation state can be obtained through the reverse electromotive force of a U / V / W phase line collected in real time, the current rotating speed can be obtained by recording the commutation time of each step, the state of the three-phase brushless motor is judged, and the three-phase brushless motor is controlled and driven to operate. The internal structure of the tool is simplified, and the service life of the tool is prolonged to the maximum extent. Meanwhile, the intelligent controller can accurately control the motor to run, high-speed and high-precision real-time current sampling is assisted, it can be guaranteed that the output power of the motor in any working state is accurate, and the cruising ability of the battery pack is improved.

Description

technical field [0001] The invention relates to a lithium electric tool, in particular to a lithium electric tool capable of intelligently adjusting the force, and belongs to the field of automatic electric tools. Background technique [0002] As a new energy technology in the 21st century, lithium-ion batteries are widely used in various power tools due to their advantages such as high voltage, high specific energy, long cycle life, and good safety performance. In order to comply with the development trend of lightweight and portable power tools in recent years, when designing these power tools, manufacturers often do not increase the capacity of the battery pack in order to reduce the weight of the product. [0003] In addition, for the consideration of product intelligence and automation, most of the lithium battery tools currently on the market are equipped with a speed control switch, and the user can directly control the speed of the tool by applying different pressure...

AI Technical Summary

Problems solved by technology

[0004] However, in the actual process of the tool, it is actually difficult for the user to achieve precise control of the force. Therefore, most of the time, the user directly presses the speed control switch to the end to seek the maximum speed of the tool and achieve the maximum working force. In this way, The speed control switch is not only more easily damaged, but its speed control function is completely meaningless

In addition, the battery pack capacity of the lithium battery tools mentioned above is generally small. If the user keeps the tool at the maximum output power, the battery pack’s battery life will undoubtedly be greatly reduced.

Images