Advanced power electronic circuit for fuel cell vehicles enabling independent cooling of various systems

A fuel cell vehicle comprising:

• at least one fuel cell;
• an electric machine powered by the at least one fuel cell;
• a controller and first associated electronic components configured to control the at least one fuel cell;
• second associated electronic components configured to control the electric machine;
• a first coolant circuit having a first pump configured to circulate coolant through the at least one fuel cell;
• a second coolant circuit configured to circulate coolant through the first and second associated electronic components, the second coolant circuit including a first partial coolant circuit having a second pump configured to circulate coolant through the first associated electronic components, and a second partial coolant circuit having a third pump configured to circulate coolant through the second associated electronic components;
• a first check valve disposed between an inlet of the first partial coolant circuit and an inlet of the second partial coolant circuit;
• and
• a second check valve disposed between an outlet of the first partial coolant circuit and an outlet of the second partial coolant circuit.