Battery Module Heating via Selective Cell Discharge

The patent applies local quality by selectively heating different battery cell groups based on their individual temperature and voltage states. The control system identifies which specific cell groups need heating and applies heat locally to those groups rather than heating the entire battery pack uniformly, thereby maintaining voltage balance while improving power output.

The patent implements feedback control by continuously monitoring voltage levels and temperature of individual battery cell groups. The control system uses this feedback information to dynamically adjust heating operations, selecting which cell groups to heat and for how long, ensuring that voltage balance is maintained while achieving the desired temperature increase for improved power output.

The patent applies partial action by discharging only the specific battery cell groups that require heating, rather than discharging the entire battery pack. The control system determines the minimum necessary discharge duration and intensity required to achieve the target temperature for under-temperature cell groups, thereby reducing overall energy loss while still achieving the heating objective.

The patent implements self-service by using the battery cells themselves as the heat source through controlled internal discharge. Instead of introducing external heating components that would consume additional energy, the system utilizes the battery cells' own electrical energy converted to thermal energy through resistor discharge, making the heating process self-sufficient and minimizing external energy losses.