Motor control method, controller and electric excavator for electric excavator

By combining the detection of the vehicle controller with the pilot safety switch and the seat pressure switch, the automatic start-stop and speed regulation of the electric excavator motor are realized, which solves the problem of high energy consumption of electric excavators and improves the rapid response performance of hydraulic actions.

CN117166554BActive Publication Date: 2025-11-25ZOOMLION HEAVY INDUSTRY SCIENCE AND TECHNOLOGY CO LTD +2
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Patent Information

Application Number
CN202311097428.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-08-29
Publication Date
2025-11-25
Estimated Expiration
2043-08-29

AI Technical Summary

Technical Problem

Existing technologies for electric excavators have high energy consumption and cannot respond quickly, making it impossible to effectively reduce energy consumption during idling. Furthermore, existing methods are not applicable to electric excavators.

Method used

By using a vehicle controller in electric excavators, combined with pilot safety switches and seat pressure switches, the operator's movement tendencies are detected, enabling automatic start-stop and speed regulation of the motor. This includes timely stopping of the motor when the operator leaves the cab or temporarily stops hydraulic work, automatic start-up of the motor when hydraulic work resumes, and adjustment of the motor speed according to the hydraulic system pressure.

Benefits of technology

It effectively reduces the overall energy consumption of electric excavators, ensures the normal operation of other electrical functions, and improves the rapid response performance of hydraulic actions.

✦ Generated by Eureka AI based on patent content.
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Abstract

The application discloses a motor control method and controller of an electric excavator and the electric excavator. The method comprises the following steps: acquiring the state of a pilot safety switch when the electric excavator is powered on; acquiring the state of a seat pressure switch when the state of the pilot safety switch is an off state; and sending a corresponding instruction to a motor controller to control the motor to stop or start according to the state of the seat pressure switch. The application can determine the action tendency of the operator by detecting the states of the pilot safety switch and the seat pressure switch, and can stop the motor in time when the operator leaves the cab or temporarily stops the hydraulic work, thereby effectively reducing the overall energy consumption and not affecting the normal operation of other electrical functions of the excavator.
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