Information processing method and information processing system

An information processing method for use in a computer, the information processing method comprising:

• acquiring a charging state and a deterioration state of a battery;
• acquiring a use schedule of the battery;
• determining, based on the deterioration state, an upper limit of the charging state of the battery to cause a deterioration amount not to exceed a permitted deterioration amount;
• determining a charging plan of the battery based on the upper limit of the charging state determined, the use schedule, and the charging state;
• and
• outputting the charging plan determined,
• wherein in the determining of the upper limit, when a vehicle loaded with the battery is scheduled to travel a long distance, the upper limit is determined to cause the deterioration amount not to exceed the permitted deterioration amount.

An information processing system comprising:

• an acquisition unit that acquires a charging state and a deterioration state of a battery and a use schedule of the battery;
• a first determination unit that determines, based on the deterioration state, an upper limit of the charging state of the battery to cause a deterioration amount not to exceed a permitted deterioration amount;
• a second determination unit that determines a charging plan of the battery based on the upper limit of the charging state determined, the use schedule, and the charging state;
• and
• an output unit that outputs the charging plan determined,
• wherein when a vehicle loaded with the battery is scheduled to travel a long distance, the first determination unit determines the upper limit to cause the deterioration amount not to exceed the permitted deterioration amount.