Method for Charging All-Solid-State Battery and Charging Control Device

A charge control device that controls charging of an all-solid-state battery that includes a negative electrode containing lithium metal and a solid electrolyte layer, comprising:

• an impedance measuring device that measures an impedance value in an interface between the negative electrode and the solid electrolyte layer;
• and
• a controller that determines whether the all-solid-state battery is allowed to be charged, wherein the controller:
• determines whether the impedance value measured by the impedance measuring device is within an allowable impedance range;
• and
• allows charging the all-solid-state battery when the measured impedance value is within the allowable impedance range, and
• the allowable impedance range is determined by an allowable impedance map and a charging current density to charge the all-solid-state battery, and the allowable impedance map associates the charging current density with an allowable impedance value at which charging is allowed.