Patent ID: 9660476
Date: 2017-05-23
CPC Classifications: B60L,H02J,H02M,H02P,Y02T

Claim:
1. A circuit arrangement for discharging an electrical energy store, the circuit arrangement comprising: a first discharge current path from a first, positive electrical connection of the energy store to a second, negative electrical connection of the energy store, the first discharge current path comprising: a second discharge current path from the positive electrical connection of the energy store to the negative electrical connection of the energy store in parallel with the first discharge current path, the second discharge path comprising a semiconductor switch with an actuation connection and controllable via the actuation connection for controlled, active discharge of the energy store; wherein the semiconductor switch has a first electrical connection connected to the positive electrical connection of the energy store and a second electrical connection connected to the negative electrical connection of the energy store; a first control path between the first electrical connection of the voltage limiter and the actuation connection of the semiconductor switch providing a first control signal from the first electrical connection of the voltage limiter to the actuation connection of the semiconductor switch for actuating the semiconductor switch; and an overcharging identification unit for identifying overcharging of the energy store; a first signal path and a second signal path between the overcharging identification unit and the first current limiter for measuring a first discharge voltage at the first current limiter; wherein the overcharging identification unit is designed to identify overcharging of the energy store on the basis of the first discharge voltage.