BATTERY CHARGING METHOD, CONTROLLER, BATTERY MANAGEMENT SYSTEM, BATTERY, AND ELECTRIC APPARATUS

This application relates to the battery field, and discloses a battery charging method, a controller, a battery management system (700), a battery (800), and an electric device (1000). The battery charging method includes: obtaining an electrical parameter of a battery; determining whether the electrical parameter of the battery reaches a preset threshold, where a value range of the preset threshold meets the following condition: a battery state of charge (SOC) corresponding to the preset threshold is 70% to 80%; suspending, when the electrical parameter of the battery reaches the preset threshold, charging of the battery and discharging the battery for a duration of t; and continuing to charge the battery when the discharge is completed. In the embodiments of this application, the preset threshold of the electrical parameter is set. When the battery SOC reaches the preset threshold, the charge is suspended and the discharge is performed, thereby suppressing lithium plating of the battery and improving safety performance of the battery. The preset threshold selected within a SOC range of 70% to 80% can achieve better effects of suppressing lithium plating of the battery on a basis of minimizing impact on a charge duration.