CONTROL METHOD OF BATTERY APPARATUS AND BATTERY APPARATUS, SYSTEM, AND MEDIUM

Embodiments of the present application provide a control method of a battery apparatus and a battery apparatus, a system, and a medium. The method includes: acquiring a state parameter of a first battery module in the battery apparatus; controlling the first battery module and the charging device to form a first charging loop when the state parameter of the first battery module is less than a preset threshold; and controlling the first battery module, a second battery module in the battery apparatus, and the charging device to be connected in series to form a second charging loop when the state parameter of the first battery module is greater than or equal to the preset threshold; wherein a charging rate of the first charging loop is higher than a charging rate of the second charging loop. According to the embodiments of the present application, the charging speed can be improved.