BATTERY AND APPARATUS

This application provides a battery, an apparatus, a preparation method of battery, and a preparation apparatus of battery, and relates to the field of battery technologies, so as to resolve the technical problem of low battery safety. The battery includes a battery, including a first battery cell, a second battery cell, and a first thermal insulation member, where the second battery cell is disposed adjacent to the first battery cell, an energy density of the second battery cell is less than that of the first battery cell, and the first thermal insulation member is disposed between the first battery cell and the second battery cell. The apparatus in this application includes the battery. The preparation method of battery in this application includes: configuring a first battery cell; configuring a second battery cell; and configuring a first thermal insulation member. The preparation apparatus of battery in this application includes a first battery cell configuration module, a second battery cell configuration module, and a first thermal insulation member configuration module. The battery, apparatus, preparation method of battery, and preparation apparatus of battery provided in this application are used to improve use safety of the battery.