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1. (WO2018104189) METHOD FOR OPERATING A TRACTION BATTERY FOR A MOTOR VEHICLE AND BATTERY MANAGEMENT DEVICE THEREFOR

Pub. No.:    WO/2018/104189    International Application No.:    PCT/EP2017/081281
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Tue Dec 05 00:59:59 CET 2017
IPC: G01R 31/36
G01R 35/00
B60L 11/18
H01M 10/42
Applicants: VOLKSWAGEN AKTIENGESELLSCHAFT
Inventors: KROKER, Thorsten
Title: METHOD FOR OPERATING A TRACTION BATTERY FOR A MOTOR VEHICLE AND BATTERY MANAGEMENT DEVICE THEREFOR
Abstract:
The invention relates to a method for operating a battery system (1), in particular for a motor vehicle with an electric propulsion system, the battery system comprising a traction battery (2), a battery managment device (6) and one or more cell monitoring units (5), each of which monitors the cell voltages of a number of battery cells (4) in a cell array (3). The method comprises the following steps: monitoring the one or more cell monitoring units (5); if an error in one of the cell monitoring units (5) is established, an error operation mode of the traction battery (2) is adopted.