Method for operating a range extender for a motor vehicle, corresponding control device and corresponding motor vehicle

The method optimizes range extender activation based on route planning to minimize pollutant emissions by predicting the state of charge and identifying emission-free sections, ensuring efficient energy usage and reduced emissions.

DE102025103381B3Active Publication Date: 2026-06-03AUDI AG
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Patent Information

Application Number
DE102025103381
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Filing Date
2025-01-30
Publication Date
2026-06-03
Estimated Expiration
2045-01-30

AI Technical Summary

Technical Problem

The operation of range extenders in electric and hybrid vehicles leads to pollutant emissions due to the combustion process in internal combustion engines, and existing methods do not effectively address this issue while optimizing energy usage and environmental impact.

Method used

A method that determines an operating plan for the range extender based on a route plan, predicting the state of charge and identifying sections where charging can occur without exceeding a predetermined limit to minimize pollutant emissions by activating the range extender only when necessary, using a control device with artificial intelligence to implement this plan.

Benefits of technology

Reduces pollutant emissions by optimizing the activation of the range extender to occur only when needed, ensuring a sufficient energy buffer is maintained, thus enhancing the vehicle's range and reducing environmental impact.

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Abstract

Method for operating a range extender (4) of a motor vehicle (1), wherein the motor vehicle (1) comprises an electrical energy storage device (2) for storing electrical energy and a traction motor (3) designed as an electric machine, by means of which electrical energy stored in the energy storage device (2) can be used to generate a drive torque of the motor vehicle (1), wherein the motor vehicle (1) comprises a range extender (4) comprising an internal combustion engine (5) and a generator (6), wherein the energy storage device (2) can be charged by operating the internal combustion engine (5) using a fossil fuel and by using the generator (6), wherein a route plan (17) relating to a route (18) to be travelled when driving the motor vehicle (1) is determined or recorded before or at the beginning of an upcoming journey,where, based on the route plan (17), an operating plan (19) concerning the charging of the energy storage device (2) during the journey using the range extender (4) is determined, and the journey is carried out in accordance with the operating plan (19).
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