| 摘要 |
The invention relates to a circuit assembly (SA) for discharging an electrical energy store (ES), comprising a first discharge current path (ELP1) from a first, positive current connection (A11) of the energy store (ES) to a second, negative current connection (A12) of the energy store (ES) having a voltage limiter (SPB) for the uncontrolled, passive discharging of the energy store (ES) and for keeping a charge voltage (U_ES) of the energy store (ES) at least at a voltage threshold (U_TH), and a second discharge current path (ELP2) from the positive current connection (A11) of the energy store (ES) to the negative current connection (A12) of the energy store (ES) parallel to the first discharging current path (ELP1) having a semiconductor switch (S), which has a control connection (AS) and can be controlled by means of said control connection (AS), for the controlled, active discharging of the energy store (ES). The semiconductor switch (S) comprises a first current connection (A31) for electrically connecting to the positive current connection (A11) of the energy store (ES) and a second current connection (A32) for electrically connecting to the negative current connection (A12) of the energy store (ES). The voltage limiter (SPB) comprises a first current connection (A21) for electrically connecting to the positive current connection (A11) of the energy store (ES) and a second current connection (A22) for electrically connecting to the negative current connection (A12) of the energy store (ES). Between the first current connection (A21) of the voltage limiter (SPB) and the control connection (AS) of the semiconductor switch (S), the circuit assembly (SA) has a first control path (STP1) for providing a first control signal (SS1) from the first current connection (A21) of the voltage limiter (SPB) to the control connection (AS) of the semiconductor switch (S) in order to control the semiconductor switch (S). |
