Patent ID: 8917095

Claim:
A vehicle system comprising at least a sulfide-based solid electrolyte cell which comprises at least a power generation unit comprising a positive electrode, a negative electrode and an electrolyte present between the positive and negative electrodes, and a cell case which houses the power generation units, wherein at least one of the positive electrode, the negative electrode and the electrolyte comprises a sulfur material, and wherein at least one of a current collector which constitutes a charging and discharging path, a lead which constitutes a charging and discharging path, and a lead which is connected to a circuit that is attached to the charging and discharging path, comprises a material which chemically reacts with hydrogen sulfide to change electrical resistance; and the vehicle system comprising a unit for detecting hydrogen sulfide controlled to determine whether hydrogen sulfide is generated or not based on a voltage response upon charging or discharging the sulfide-based solid electrolyte cell for a predetermined time at a predetermined electrical current, or an electrical current response upon charging or discharging the sulfide-based solid electrolyte cell for a predetermined time at a predetermined voltage.