Determination system, vehicle, and determination method

A vehicle on which a determination system for a secondary battery is mounted, wherein

• the secondary battery stores power used for running the vehicle and is mounted in a replaceable state,
• the determination system comprises:
• a processor;
• a storage device that stores a genuine product characteristic that is a temperature change characteristic of a genuine product, the temperature change characteristic being a characteristic of an index which changes with temperature of the secondary battery and when not being charged or discharged;
• and
• a characteristic acquisition unit that acquires a determination target characteristic that is a temperature change characteristic of the index of the secondary battery after replacement mounted on the vehicle when not being charged or discharged, and
• the processor
• compares the determination target characteristic acquired by the characteristic acquisition unit with the genuine product characteristic stored in the storage device, and
• determines whether the secondary battery mounted on the vehicle is the genuine product or not from a comparison result.

A determination method using a determination system for a secondary battery that stores power used for running a vehicle and that is mounted on the vehicle in a replaceable state,

• the determination system comprising:
• a processor;
• a storage device that stores a genuine product characteristic that is a temperature change characteristic of a genuine product, the temperature change characteristic being a characteristic of an index which changes with temperature of the secondary battery and when not being charged or discharged;
• and
• a characteristic acquisition unit that acquires a determination target characteristic that is a temperature change characteristic of the index of the secondary battery after replacement mounted on the vehicle when not being charged or discharged,
• the determination method comprising:
• comparing, by the processor, the determination target characteristic acquired by the characteristic acquisition unit with the genuine product characteristic stored in the storage device, and
• determining, by the processor, whether the secondary battery mounted on the vehicle is the genuine product or not from a comparison result.