Long-endurance power supply device for concrete stress-strain detection

The invention relates to the technical field of battery management, and particularly discloses a long-endurance power supply device for concrete stress-strain detection, which comprises a battery pack, a power supply management module and a micro-processing module; the battery pack is used for supplying power to the power management module and the micro-processing module; the micro-processing module is used for entering a dormant state after the working time reaches a preset working duration; the micro-processing module is also used for timing after entering the dormant state, and quitting the dormant state after timing reaches a preset dormant duration; after the micro-processing module quits the dormant state, the power management module is used for obtaining the current electric quantity of the battery pack and sending the current electric quantity to the micro-processing module; and the micro-processing module is further used for judging whether the current electric quantity of the battery pack is lower t