The invention relates to a diagnostic circuit for diagnosing a battery disconnect unit for disconnecting a battery system from an electrical system. Here, the battery disconnection unit has a first switching element and a second switching element. According to the invention, the diagnostic circuit comprises a first voltage divider and a second voltage divider, the first voltage divider having a first resistor, a second resistor and a first protection diode; the second voltage divider has a third resistor, a fourth resistor, and a second protection diode. The first voltage divider and the second voltage divider are connected in series in such a way that the anode of the first protection diode is connected to the second node, the cathode of the first protection diode is connected to the first interface of the first resistor, and the second interface of the first resistor is connected to the first interface of the second resistor. The second interface of the second resistor is connectable to one of the second interface of the first switching element and the second interface of the second switching element.
本发明涉及一种用于诊断电池断开单元的诊断电路,所述电池断开单元用于将电池系统从电气系统断开。在此,所述电池断开单元具有第一开关元件和第二开关元件。根据本发明,所述诊断电路包括第一分压器和第二分压器,其中,第一分压器具有第一电阻、第二电阻和第一保护二极管;第二分压器具有第三电阻、第四电阻和第二保护二极管。在此,第一分压器和第二分压器如此串联连接,使得第一保护二极管的阳极与第二节点连接,第一保护二极管的阴极与第一电阻的第一接口连接,第一电阻的第二接口与第二电阻的第一接口连接,第二电阻的第二接口能够与第一开关元件的第二接口和第二开关元件的第二接口中的一个连接。
Diagnostic circuit for battery disconnect unit, method for diagnosing battery disconnect unit, battery disconnect unit
用于电池断开单元的诊断电路、用于诊断电池断开单元的方法、电池断开单元
2023-07-28
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |