Method for controlling a change in operating mode of an energy storage device, control unit and motor vehicle

The method allows for flexible operating mode changes in vehicle energy storage devices by signaling impending and completed transitions to consumer modules, preventing errors and ensuring seamless functionality.

DE102024138307A1Pending Publication Date: 2026-06-18AUDI AG
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Patent Information

Application Number
DE102024138307
Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-12-17
Publication Date
2026-06-18

AI Technical Summary

Technical Problem

Existing methods for controlling the operating mode of a vehicle's energy storage device, such as a high-voltage battery, often result in error messages when consumers are active during a power interruption, limiting flexibility and user convenience.

Method used

A method where a control unit signals impending and completed operating mode changes to consumer control modules, allowing consumers to temporarily switch to an inactive state and then resume their active state, preventing error messages and enabling flexible mode changes.

Benefits of technology

Enables flexible operating mode changes without error messages, ensuring seamless functionality and user convenience by temporarily suspending consumer functions during mode transitions.

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Patent Text Reader

Abstract

The invention relates to a method for controlling an operating mode change (W) of an energy storage device (18) of a motor vehicle (10), which is assigned an active operating mode (MA) and an inactive operating mode (MI), wherein the motor vehicle (10) comprises an on-board network (12) and at least one consumer (14) connected to the on-board network (12), which has a function-executing, active state (ZA) and an inactive state (ZI), and to which a control module (16) is assigned.It is provided that, in order to carry out the change of operating mode (W), according to which a control unit (20) performs a first transfer of the energy storage device (18) from the active operating mode (MA) to the inactive operating mode (MI) and then a second transfer of the energy storage device (18) from the inactive operating mode (MI) to the active operating mode (MA), the control unit (20) signals the impending change of operating mode (W) to the control module (16) before the first transfer, and signals the end of the change of operating mode (W) to the control module (16) after the second transfer.
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Citation Information

Patent Citations

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