Charging station, battery management system, and charging method

A battery management system comprising:

• an electric energy storage device;
• and
• a charging station,
• wherein the electric energy storage device includes:
• a first authenticator that performs mutual authentication with the charging station connected for charging;
• a first memory that stores a degree of deterioration related to deterioration of the electric energy storage device and that is tamper-resistant;
• and
• a transmitter that transmits the degree of deterioration stored in the first memory to the charging station, and
• the charging station includes:
• a second authenticator that performs mutual authentication with the electric energy storage device connected for charging;
• a second obtainer that obtains, from the electric energy storage device whose validity is confirmed in the mutual authentication, a degree of deterioration related to deterioration of the electric energy storage device;
• a second memory that stores the degree of deterioration obtained by the second obtainer and that is tamper-resistant;
• and
• a controller that does not charge the electric energy storage device when the degree of deterioration of the electric energy storage device stored in the second memory indicates that the deterioration is advanced beyond a predetermined threshold value.

A charging method performed by a charging station that charges an electric energy storage device, the charging method comprising:

• performing mutual authentication with the electric energy storage device connected to the charging station for charging;
• obtaining, from the electric energy storage device whose validity is confirmed in the mutual authentication, a degree of deterioration related to deterioration of the electric energy storage device;
• storing the degree of deterioration obtained in a memory that is included in the charging station and that is tamper-resistant;
• and
• forgoing charging the electric energy storage device when the degree of deterioration of the electric energy storage device stored in the memory indicates that the deterioration is advanced beyond a predetermined threshold value.