An operation method for a backup power supply of an electronic system is provided. The backup power supply includes a fuse. The operation method includes: estimating a reading voltage error and a resistance of the fuse; reading a real-time battery discharging current; reading and calculating a voltage difference between two terminals of the fuse; and determining whether to send a fuse replacement message to the electronic system according to the voltage difference between the two terminals of the fuse, the reading voltage error, the resistance of the fuse and the real-time battery discharging current.

Communication enabled circuit breakers are described. Methods associated with such communication enabled circuit breakers are also described. The communication enabled circuit breakers may include one or more current sensors. The one or more current sensors may be disposed in a clip. The clip may be coupled to a line side phase connection, and the clip may be shielded to attenuate signals.

Communication enabled circuit breakers are described. Methods associated with such communication enabled circuit breakers are also described. The communication enabled circuit breakers may include one or more current sensors. The one or more current sensors may be disposed in a clip. The clip may be coupled to a line side phase connection, and the clip may be shielded to attenuate signals.

A power component includes two electric terminals, a component housing, a main component at least partially surrounded by the component housing, connected with the two terminals, and configured to carry a power current flowing between the two electric terminals, and a sensor and emitter unit which is configured to measure a value of a physical quantity (T, V, ΔV) characterizing an operating state of the main component, and to emit an electromagnetic signal, in which the measured value of the physical quantity is encoded. The sensor and emitter unit includes an antenna for emitting the electromagnetic signal which is spaced apart from the main component and arranged in, on and/or at the component housing.

A power component includes two electric terminals, a component housing, a main component at least partially surrounded by the component housing, connected with the two terminals, and configured to carry a power current flowing between the two electric terminals, and a sensor and emitter unit which is configured to measure a value of a physical quantity (T, V, ΔV) characterizing an operating state of the main component, and to emit an electromagnetic signal, in which the measured value of the physical quantity is encoded. The sensor and emitter unit includes an antenna for emitting the electromagnetic signal which is spaced apart from the main component and arranged in, on and/or at the component housing.

A fuse monitoring system for monitoring a fuse is provided. The system includes a fuse monitoring assembly and a fuse monitoring computing device. The fuse monitoring assembly includes at least one sensor configured to measure fuse data associated with the fuse, the fuse data including operational data of the fuse and environmental data of an environment in which the fuse locates, the environmental data including shock and vibrations. The fuse monitoring assembly also includes at least one processor configured to transmit the fuse data to a remote computing device. The fuse monitoring computing device is positioned remotely from the fuse monitoring assembly, the fuse monitoring computing device including at least one processor in communication with at least one memory device. The fuse monitoring computing device is programmed to receive, from the fuse monitoring assembly, the fuse data, analyze the fuse data, and generate a fuse message based on the analysis.

A fuse monitoring system for monitoring a fuse is provided. The system includes a fuse monitoring assembly and a fuse monitoring computing device. The fuse monitoring assembly includes at least one sensor configured to measure fuse data associated with the fuse, the fuse data including operational data of the fuse and environmental data of an environment in which the fuse locates, the environmental data including shock and vibrations. The fuse monitoring assembly also includes at least one processor configured to transmit the fuse data to a remote computing device. The fuse monitoring computing device is positioned remotely from the fuse monitoring assembly, the fuse monitoring computing device including at least one processor in communication with at least one memory device. The fuse monitoring computing device is programmed to receive, from the fuse monitoring assembly, the fuse data, analyze the fuse data, and generate a fuse message based on the analysis.

An apparatus for detecting a defect of a battery pack may disconnect a battery cell at which a defect is detected inside a battery pack to remove a risk factor that may occur from the corresponding battery cell. Risk factors that may cause explosions can be eliminated by discharging the battery cell at which a defect is detected. In addition, the recurrence of the risk factor can be prevented in advance by disconnecting the battery cell at which the defect is detected from the battery pack.

A device for predicting a life expectancy of a fuse for a battery of an electric vehicle may include a sensor configured to generate and output current information about current flowing in the fuse, a processor, and a memory connected to the processor and configured to store a preset lookup table, the memory storing program instructions which are executable by the processor to generate fuse-life expectancy information corresponding to the fuse based on the lookup table and time corresponding to an excess when the current information exceeds a preset threshold value.

A device for predicting a life expectancy of a fuse for a battery of an electric vehicle may include a sensor configured to generate and output current information about current flowing in the fuse, a processor, and a memory connected to the processor and configured to store a preset lookup table, the memory storing program instructions which are executable by the processor to generate fuse-life expectancy information corresponding to the fuse based on the lookup table and time corresponding to an excess when the current information exceeds a preset threshold value.