This application discloses a method and related device for controlling in-vehicle temperature, relating to the field of automotive control technology. The solution includes collecting vehicle
operating environment information, determining a target heating component and its corresponding target temperature value, as well as the target
heating power of the air conditioner, based on the collected information. Both the target
heating power and the target temperature value are positively correlated with the
initial heat required to reach a specified in-vehicle ambient temperature. Finally, the temperature of the target heating component is controlled based on its target temperature value, and simultaneously, the
heating power of the air conditioner is controlled based on the target heating power. In a coordinated control
scenario, since the
internal heating component is already activated to conduct heat to the user's local area, the local temperature can be quickly increased. Therefore, the heating power of the air conditioner can be appropriately reduced, thereby reducing the overall vehicle
power consumption and increasing the
electric vehicle's range in cold conditions.