Method and device for controlling vehicle

A method of controlling a vehicle having an engine, a generator driven by the engine and generating power, a first power storage device and a second power storage device each charged by power generated by the generator and each supplying power necessary for automatic driving of the vehicle to an automatic driving electric load, and a disconnecting device provided between the first power storage device and the second power storage device, the method comprising:

• when predetermined conditions are satisfied at a time of vehicle stop, executing an idling stop control for stopping the engine;
• performing cranking of the engine by power of the first power storage device with the disconnecting device being in an interruption state when ending the idling stop control and restarting the engine;
• charging the first power storage device without charging the second power storage device with the disconnecting device being held in the interruption state for a predetermined time period after the restart;
• and
• charging both of the first power storage device and the second power storage device with the disconnecting device being in a conduction state after the predetermined time period elapses,
• wherein the predetermined time period is considered to elapse when a charge state of the second power storage device lowers to a second predetermined value, wherein the second predetermined value is set to a value that is higher than an automatic driving warning SOC at which an alert that alerts to change the automatic driving to a manual driving is issued.

A control device of a vehicle comprising:

• an engine;
• a generator driven by the engine and generating power;
• a first power storage device and a second power storage device each charged by power generated by the generator and each supplying power necessary for automatic driving of the vehicle to an automatic driving electric load;
• a disconnecting device provided between the first power storage device and the second power storage device;
• and
• a controller configured to, when predetermined conditions are satisfied at a time of vehicle stop, execute an idling stop control for stopping the engine, perform cranking of the engine by power of the first power storage device with the disconnecting device being in an interruption state when ending the idling stop control and restarting the engine, and charge the first power storage device without charging the second power storage device with the disconnecting device being held in the interruption state for a predetermined time period after the restart, and further configured to charge both of the first power storage device and the second power storage device with the disconnecting device being in a conduction state after the predetermined time period elapses,
• wherein the predetermined time period is considered to elapse when a charge state of the second power storage device lowers to a second predetermined value, wherein the second predetermined value is set to a value that is higher than an automatic driving warning SOC at which an alert that alerts to change the automatic driving to a manual driving is issued.