Electric construction machine

What is AI technical title?
AI technical title is built by Patsnap AI team. It summarizes the technical point description of the patent document.
The electric construction machine addresses the challenge of balancing operability and operating time by using a controller to adjust idle rotation speed based on battery SOC, reducing power consumption and extending operating time while maintaining responsiveness.

WO2025069514A1 Publication Date: 2025-04-03HITACHI CONSTRUCTION MACHINERY TIERRA CO LTD

7 Cites 0 Cited by

Patent Information

Application Number: PCT/JP2024/014324
Authority / Receiving Office: WO · WO
Patent Type: Applications
Current Assignee / Owner
Priority Date: 2023-09-26
Filing Date: 2024-04-08
Publication Date: 2025-04-03

Application Information

Patent Timeline

26 Sep 2023

Priority

08 Apr 2024

Application

PCT/JP2024/014324

03 Apr 2025

Publication

WO2025069514A1

IPC: E02F9/00; B60K1/04; H02J7/00

CPC: H02J7/00; B60K1/04; E02F9/207; E02F3/32; B60L2200/40; B60L1/003; B60L58/12; B60L2240/421

Get more patent work done with AI

Run novelty searches—or use them for FTO, design risk, drafting and technical problem-solving.

AI Tagging

Application Domain

Batteries circuit arrangements Mechanical machines/dredgers

Explore More Agents

Novelty Search
Search existing technologies and assess novelty
↗
FTO
Analyze whether a product may infringe others' patents
↗
Design FTO
Check prior-design risk for exterior design
↗
Drafting
Draft patent application text based on a technical solution
↗
Find Solutions with TRIZ
Generate feasible solution to solve your technical challenge
↗
IP MCP Servers
Connect trusted patent search and cited evidence to Claude, Cursor or your own AI workflow
↗

AI Technical Summary

Technical Problem

Conventional auto idle systems in electric construction machines, such as electric hydraulic excavators, face challenges in balancing operability and operating time due to constant idle speed, which affects response time and battery power consumption.

Method used

An electric construction machine equipped with a controller that adjusts the idle rotation speed of the electric motor based on the battery's charging rate (SOC), reducing power consumption and extending operating time while maintaining operability.

Benefits of technology

The solution effectively reduces battery power consumption, lengthens the operating time of the electric construction machine, and suppresses the decline in operability by dynamically adjusting idle rotation speed according to the battery's SOC.

✦ Generated by Eureka AI based on patent content.

Patent Text Reader

Abstract

The purpose of the present invention is to provide a construction machine that can achieve requirements of both operability and operation time. To achieve this purpose, the present invention provides an electric construction machine comprising: an operation device that instructs the operation of a hydraulic actuator; a motor rotational speed setting device that instructs the rotational speed of an electric motor; and a controller that controls the rotational speed of the electric motor, wherein if a non-operating state of the operation device has continued for a certain period of time, the controller reduces the rotational speed of the electric motor from the instructed rotational speed instructed by the motor rotational speed setting device to an idle rotational speed determined according to the state of charge (SOC) of a battery.

Need to check novelty before this filing date? Find Prior Art