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1. (WO2018162819) ELECTRIC CIRCUIT FOR DISCHARGING A CAPACITOR, ELECTRIC SYSTEM AND MOTOR VEHICLE COMPRISING SUCH AN ELECTRIC DISCHARGE CIRCUIT

Pub. No.:    WO/2018/162819    International Application No.:    PCT/FR2018/050442
Publication Date: Fri Sep 14 01:59:59 CEST 2018 International Filing Date: Sat Feb 24 00:59:59 CET 2018
IPC: H02H 3/14
H02M 1/32
Applicants: VALEO EQUIPEMENTS ELECTRIQUES MOTEUR
Inventors: LOY-LAFOND, Philippe
Title: ELECTRIC CIRCUIT FOR DISCHARGING A CAPACITOR, ELECTRIC SYSTEM AND MOTOR VEHICLE COMPRISING SUCH AN ELECTRIC DISCHARGE CIRCUIT
Abstract:
The electric discharge circuit (106) comprises: two interface terminals (BA, BB) to which the capacitor (C) is to be connected and between which a capacitor voltage (uc) is to be present; an electric current consumption circuit (108) connected between the two interface terminals (BA, BB) and designed to consume a discharge current (i) of the capacitor (C); and an electric control circuit (110) for controlling the electric current consumption circuit (108), the electric control circuit (110) being connected between the two interface terminals (BA, BB) in such a way as to receive the capacitor voltage (uc). The electric control circuit (110) is designed to: deactivate the electric current consumption circuit (108) when the capacitor voltage (uc) is higher than a predefined threshold; and activate the electric current consumption circuit (108) when the capacitor voltage (uc) between the two interface terminals (BA, BB) is lower than the predefined threshold. The electric control circuit (110) is also designed to receive an electric power supply only via the two interface terminals (BA, BB).