SYSTEM AND METHOD FOR MANAGING ELECTRICAL POWER GRANTED BY ELECTRICALLY DRIVED LOADS

The system optimizes power management in machines with electrically driven loads by using an auxiliary motor and flywheel to reduce battery charging speed and store energy, addressing inefficiencies in cold weather and extending battery life.

DE102025155368A1Undetermined Publication Date: 2026-07-09CATERPILLAR PAVING PROD INC
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Patent Information

Application Number
DE102025155368
Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
Priority Date
2025-01-08
Filing Date
2025-12-30
Publication Date
2026-07-09

AI Technical Summary

Technical Problem

Existing machines with electrically driven loads, such as asphalt compactors, experience inefficient charging and discharging of batteries due to capacity limitations in cold weather conditions, leading to prolonged stopping times and energy waste.

Method used

A system with an auxiliary electric motor and flywheel is used to manage electrical power during deceleration events, reducing battery charging speed and storing energy in the flywheel, which is then used to assist in acceleration, optimizing power management and extending battery life.

Benefits of technology

The system efficiently manages electrical power by reducing battery charging rates during deceleration and storing excess energy, ensuring timely stopping of the machine and extending battery life, particularly in cold conditions.

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Abstract

A method for managing electrical power obtained from an electrically driven load (136) comprises detecting a deceleration event of the electrically driven load (136); determining a battery charging speed limit of a battery (124) that drives a first electric motor (160') which drives the electrically driven load (136); and determining, in response to the battery charging speed limit, at least a first part of the electrical power to drive a second electric motor (16099) during the deceleration event in order to allow a reduction in the charging speed of the battery (124) from the electrical power to a reduced charging speed.
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Citation Information

Patent Citations

  • A battery and flywheel combined idling and braking energy recovery system

    CN105730446B