Current detection and control device for mobile terminal

The invention discloses a current detection and control device for a mobile terminal. The device comprises a battery connector, a current amplification module, a comparator, a first resistor, a second resistor, a third resistor, a switch control module and an alarm module, wherein the anode of the battery connector is connected with the first end of the current amplification module through the first resistor and connected with the first end of the switch control module through the third resistor; the third end and the fourth end of the current amplification module are connected with positive and negative input ends of the comparator respectively; the output end of the comparator is connected with the second end of the switch control module; and the first end of the switch control module is connected with the second end of the current amplification module through the second resistor, and the third end is connected with the power supply end of the mobile terminal. According to the device, current on a power line can be detected in real time through the current amplification module, pressure drop on the third resistor is increased until exceeding an offset voltage range of the comparator when abnormal current occurs, then the comparator outputs a high level to enable the switch control module to be off and a battery to stop supplying power, and the mobile terminal can be protected.