The battery module's working status data information is transmitted to the APP through the Bluetooth module to intelligently manage and maintain each battery unit, preventing overcharging and overdischarging of the battery, prolonging the service life of the battery, and monitoring the state of the battery. The user can obtain the working status and data information of the battery pack in real time, so that the user can use the battery pack normally, and meet the daily work and life needs of the user, thereby improving the user's product use experience.