Safety module for an inverter of a hybrid vehicle

A safety module for an inverter of a motor vehicle, the vehicle comprising a battery, the inverter comprising at least two power circuits, each power circuit comprising a first switch referred to as “high”, connected between the battery and a midpoint belonging to said power circuit, and a second switch referred to as “low”, connected between the midpoint and a ground, each power circuit being capable of delivering an alternating current at its midpoint, the safety module comprising a control unit and at least two safety switches, each safety switch being associated with a power circuit and being connected between the midpoint of the power circuit with which it is associated and a point referred to as the “measurement” point, the measurement point being common to the safety switches, the control unit being capable of controlling each safety switch and being configured to measure the voltage at the measurement point and to detect a closing malfunction of a safety switch if:

• a) a closing command has been sent to said safety switch, the other safety switches being open,
• b) and the voltage at the measurement point is negative.