US Patent 10300906 Power supply system, transportation device, and power transmission method

A power supply system includes a first energy storage, a second energy storage, a power transmission circuit, and circuitry. The circuitry acquires at least one of a request supply amount and a request output amount. The circuitry calculates a first input or output target amount and a second input or output target amount in accordance with at least one state quantity including the at least one of the request supply amount and the request output amount. The circuitry controls the power transmission circuit to control electric power transmission so that the first input or output target amount and the second input or output target amount are satisfied. The circuitry controls the power transmission circuit so that a change in an amount of the electric power transmission decreases even though changes in the first input or output target amount and the second input or output target amount are discontinuous.