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1. (WO2015121065) SAFETY DEVICE FOR A BATTERY CONTACTOR IN AN ELECTRIC VEHICLE

Pub. No.:    WO/2015/121065    International Application No.:    PCT/EP2015/051682
Publication Date: Fri Aug 21 01:59:59 CEST 2015 International Filing Date: Thu Jan 29 00:59:59 CET 2015
IPC: B60L 3/00
B60L 3/04
B60L 3/12
B60L 11/18
Applicants: ROBERT BOSCH GMBH
Inventors: THOMAS, Robert
ROTH, Manuel
Title: SAFETY DEVICE FOR A BATTERY CONTACTOR IN AN ELECTRIC VEHICLE
Abstract:
The invention relates to a safety device (4) for a contactor (2) connected between a secondary battery and an electrical power network, in particular of a motor vehicle that can be driven electrically, comprising at least one electronic evaluating unit (6), which can be connected to at least one electrical component of the secondary battery by means of a communication connection (5), and at least one safety switch (8), which can be controlled by means of the electronic evaluating unit (6) and which can be arranged in an electrical control circuit (7) of the contactor (2), wherein the electronic evaluating unit (6) is designed to receive at least one component-specific piece of actual information (12) from the electrical component via the communication connection (5), to compare the received piece of actual information (12) with at least one piece of target information stored in the electronic evaluating unit (6), and to control the safety switch (8) in dependence on a result of the comparison in such a way that the electronic evaluating unit closes the safety switch (8) if the piece of actual information (12) corresponds with the piece of target information and opens the safety switch (8) if the piece of actual information (12) does not correspond with the piece of target information.