Multifunctional detachable emergency lamp

The invention relates to a multifunctional detachable emergency lamp, comprising a lamp cap and a lamp holder, wherein the lamp holder is internally provided with a transformer device and is provided with a four-core aerial socket, two cores in the aerial socket are respectively connected with an output end of the transformer device, the other two cores in the aerial socket are connected with a first switch, the lamp cap comprises a microcontroller, an LED (light-emitting diode) lamp bank, a storage battery and a second switch, the microcontroller comprises a storage battery control module for monitoring voltage and temperature of the storage battery, a switch control module and a power supply control module, the lamp cap is provided with a four-core aerial plug, two cores in the aerial plug are respectively connected with an input end of the power supply control module, the other two cores in the aerial plug are connected with the switch control module, the second switch is connected with the switch control module, and the LED lamp bank is connected with an output end of the power supply control module. When the lamp cap is inserted into the lamp holder, the storage battery control module monitors the voltage and temperature of the storage battery; when the storage battery is undervoltage, charging is performed, and the service life of the battery is protected; when the temperature of the storage battery is too high, charging can be stopped.