Fuel cell system and vehicle

The invention provides a fuel cell system and a vehicle. The fuel cell system comprises a fuel cell, a heat exchanger and a system exhaust port. The fuel cell includes an air inlet and an air outlet. The heat exchanger comprises at least two channels used for heat exchange, and the at least two channels comprise the first channel and the second channel. One end of the first channel is used for air entering, and the other end is connected with the air inlet. One end of the second channel is communicated with the air outlet, and the other end is connected with the system exhaust port. By arranging the heat exchanger, the air and the gas exhausted from the air outlet of the fuel cell can be subjected to heat exchange in the heat exchanger, so that the heat of the gas exhausted from the air outlet of the fuel cell can be used for heating the entering air, and the time for the fuel cell to reach the optimal working temperature is shortened. 本申请提供燃料电池系统及车辆。燃料电池系统包括燃料电池、换热器和系统排气口。燃料电池包括空气进气口和空气出气口。换热器包括用于热量交换的至少两条通道