Mobile Power Supply Unit for Quick Relocation of Work Machines

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Solution Overview

Problem

Existing mobile work machines face challenges with increased dimensions and weight due to onboard energy sources, restricted mobility from stationary power supply lines, and limited operational range and flexibility, especially in emergency situations.

Innovation Solution

A mobile energy supply unit with a housing and receiving element designed for easy attachment and detachment using a gripping tool or quick-coupling device, allowing the unit to be lifted and moved independently, with a switching mechanism for internal or external power sources, and a guying device for secure transport.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If a stationary energy supply is used, then the work machine can be supplied with electrical energy, but the freedom of movement is restricted due to long and flexible power supply lines

Engineering Contradiction:
Improveelectrical energy supplyVSAvoidfreedom of movement
Core Design Contradiction:
Use of energy by moving objectVSEase of operation

Solution Approach 1:

The energy supply system is segmented into a stationary energy source and a mobile energy supply unit that can be detached and transported independently. This allows the work machine to operate near the stationary source when needed and move freely when the mobile unit is used, resolving the contradiction between energy supply and movement freedom.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A mobile energy supply unit serves as an intermediary between the stationary energy source and the work machine. It can be charged at the stationary source and then transported to provide power to the work machine in locations where direct connection to the stationary source is not feasible, enabling both energy supply and movement freedom.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the work machine changes location to an overnight camp or workshop, then operational flexibility is improved, but power supply must be temporarily interrupted or switched to alternative sources

Engineering Contradiction:
Improvelocation change capabilityVSAvoidcontinuous power supply
Core Design Contradiction:
Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The mobile energy supply unit is charged in advance at the stationary energy source before the work machine needs to relocate. This preliminary charging action ensures that sufficient energy is stored in the mobile unit to power the work machine during transport and at the new location, maintaining continuous power supply while enabling location changes.

Inventive Principle:
Principle #10Preliminary action

3Adaptability or versatility

If an onboard energy source is installed in the work machine, then energy independence is improved, but the dimensions and weight of the work machine increase

Engineering Contradiction:
Improveenergy independenceVSAvoidwork machine weight
Core Design Contradiction:
Adaptability or versatilityVSWeight of moving object

Solution Approach 1:

The energy storage function is extracted from the work machine and placed in a separate mobile energy supply unit. This allows the work machine to operate independently of the stationary energy source when the mobile unit is attached, achieving energy independence without increasing the dimensions and weight of the work machine itself.

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentEP4607749A1Mobile power supply unit for a mobile working machine
Publication Date: 2025.08.27 LEIBHERR HYDRAULIKBAGGER GMBH
  • EP4607749A1 patent drawingFigure 1~2
  • EP4607749A1 patent drawingFigure 3
  • EP4607749A1 patent drawingFigure 4

AI summary

The invention relates to a mobile energy supply unit for an electrically operated, mobile work machine, comprising an energy source enclosed by a housing and a first electrical connection via which the work machine can be electrically connected to the energy source and supplied with electrical energy therefrom. According to the invention, the housing has a receiving element which is designed and arranged such that the energy supply unit can be grasped and moved by means of a gripping tool and/or a quick-coupling device of the work machine. The invention further relates to a set with an energy supply unit according to the invention, a work machine with an energy supply unit according to the invention, and a method for moving such an energy supply unit.