The invention discloses a short-circuit protection circuit, a power battery pack and a vehicle. The short-circuit protection circuit comprises a first driving module and a second driving module, wherein the first driving module comprises a fusing circuit and a detection circuit; the fusing circuit is connected in series between a first connecting end and a second connecting end; the detection circuit is connected in parallel to two ends of the fusing circuit; the circuit breaking module comprises a responder and a circuit breaker, and the circuit breaker and the fusing circuit are connected in series between the first connecting end and the second connecting end; the responder is connected to the detection circuit and is connected with the circuit breaker; the open circuit detection module is connected to the detection circuit; the control module is connected to the open circuit detection module and is configured to obtain port voltages of the first detection port and the second detection port, and determine whether the detection circuit is in an open circuit state based on the port voltages. The short-circuit protection circuit has an open-circuit detection function, and the situation that the circuit breaker cannot be triggered to cut off the external load circuit after the fusing circuit is fused under the condition that the circuit between the fusing circuit and the responder is open-circuit is avoided.
本申请公开了一种短路保护电路、动力电池包以及车辆。短路保护电路包括:第一驱动模块包括熔断电路和检测电路,熔断电路串联在第一连接端和第二连接端之间;检测电路并联在熔断电路的两端;断路模块包括响应器和断路器,断路器与熔断电路串联在第一连接端和第二连接端之间;响应器接入检测电路,并与断路器相连接;断路检测模块连接于检测电路;控制模块连接于断路检测模块,并被配置为:获取第一检测端口和第二检测端口的端口电压,基于端口电压,判断检测电路是否处于断路状态。本申请中的短路保护电路具有断路检测功能,避免在熔断电路和响应器之间的线路发生断路的情况下,熔断电路发生熔断后无法触发断路器切断外部负载电路的情况发生。
Short-circuit protection circuit, power battery pack and vehicle
短路保护电路、动力电池包以及车辆
2022-12-20
Patent
Elektronische Ressource
Chinesisch
IPC: | H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
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