Method for setting up a vehicle battery, and battery management system for a vehicle battery of a motor vehicle

By determining precise measurement values for each battery cell and assembly before assembly, the vehicle battery management system adapts control rules to actual cell properties, enhancing efficiency and safety.

WO2025242269A1PCT designated stage Publication Date: 2025-11-27BAYERISCHE MOTOREN WERKE AG
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Patent Information

Application Number
PCT/DE2025/100502
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-05-24
Filing Date
2025-05-21
Publication Date
2025-11-27

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Abstract

The invention relates to a method for setting up a vehicle battery having a plurality of battery cells, having a cell contacting system by means of which the battery cells are connected to one another to form a battery cell complex which comprises a plurality of battery cell assemblies connected to one another in series and / or in parallel, and having a battery management system which is set up to control an energy feed into the battery cells and an energy withdrawal from the battery cells by means of at least one control instruction. According to the method, at least one battery cell measurement value is determined for each battery cell before the battery cell complex is assembled, and the battery cell measurement values are stored in the battery management system (V1), at least one battery cell assembly measurement value is determined for each battery cell assembly and stored in the battery management system (V2), at least one battery cell complex measurement value is determined and stored in the battery management system (V3), and at least one control instruction of the battery management system is adapted depending on the determined battery cell measurement values, the determined battery cell assembly measurement values and the at least one determined battery cell complex measurement value (V4).
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Citation Information

Patent Citations

  • Method for battery management of a battery with a charge state compensation system and battery management system

    EP3127208B1

  • Method for determining the performance capability of electrical vehicle energy stores

    EP4217754B1

Cited By

  • Vehicle control apparatus and method

    US20250346139A1