Self-locking battery over-discharge over-charge protection circuit and lamp

The invention belongs to the technical field of battery protection circuits and especially relates to a self-locking battery over-discharge over-charge protection circuit and a lamp. In one embodiment of the invention, the battery over-discharge over-charge protection circuit includes a switch tube controlling switching of an LED load power supply circuit and a self-locking circuit. When a rechargeable battery BT1 is over-discharge and the voltage reaches a preset under-voltage protection point, the self-locking module controls the switch tube to switch off the LED load power supply circuit. When the rechargeable battery BT1 is over-charge and the voltage reaches a preset over-voltage protection point, the self-locking circuit discharges the rechargeable battery BT1. Therefore, over-charge and over-discharge protection of the rechargeable battery BT1 are realized and the service lifetime of the battery is prolonged. 本发明属于电池保护电路技术领域，尤其涉及种自锁式电池过放过充保护电路及灯具。在本发明实施例中，自锁式电池过放过充保护电路包括控制LED负载供电通路的开关管和自锁电路，当所述充电电池BT1过