Procedure for resetting a battery system

The method addresses the challenge of resetting battery systems by disabling security mechanisms and using cryptographic authentication to enable secure reprogramming, ensuring compliance with EU Battery Directive for battery reuse.

DE102024211352A1Pending Publication Date: 2026-05-28ROBERT BOSCH GMBH
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
ROBERT BOSCH GMBH
Filing Date
2024-11-27
Publication Date
2026-05-28

AI Technical Summary

Technical Problem

Existing battery systems with hardware security modules face challenges in being reset from a primary to a secondary application due to stringent cybersecurity requirements, particularly the EU Battery Directive, which prevents deletion of original software and flashing of new software by third parties, necessitating a secure method to enable battery reuse.

Method used

A method involving the creation of decommissioning software that disables security mechanisms, uses factory programming with cryptographic authentication, and installs a generic interface to allow a third party to reprogram the battery system for a secondary application, ensuring compliance with security regulations.

Benefits of technology

Enables secure resetting of battery systems to meet EU Battery Directive requirements, allowing reuse by enabling deletion of original software and installation of new software, while maintaining security compliance.

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Abstract

The invention relates to a method for resetting a battery system (10) with at least one battery (12) and a hardware security module (14) from a primary application to a secondary application (38). The following process steps are carried out: First, battery systems (10) are collected by a third party at a production facility (28) to prepare them for the secondary application (38). Next, deactivation software (16) is created, which deletes the primary application of the battery systems (10) and includes a generic interface (20) that serves as a software interface for the third party to upload the secondary application (38) to the battery system (10). Finally, hardware security module deactivation software (22) is created, which disables security mechanisms such as authentication, signature verification, and overwrite protection.Subsequently, the deactivation software (16) is uploaded to the battery system (10) to be reset at the production facility (28) via an interface (30) as part of factory programming after authentication using a factory key (32), such that the accompanying hardware safety module deactivation software (22) allows the secondary application (38) to be uploaded. Finally, the generic programming interface (30) is used to prepare for uploading the secondary application (38) to the reset battery system (10).
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Citation Information

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