| CPC B60L 58/40 (2019.02) [B60L 50/72 (2019.02); H01M 8/0494 (2013.01); H01M 16/006 (2013.01); H01M 2250/20 (2013.01)] | 20 Claims |
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1. A fuel cell system of a fuel cell vehicle, comprising:
power sources comprising:
a fuel cell stack;
a first battery comprising a power-dense battery pack; and
a second battery comprising an energy-dense battery pack; and
a control circuit adapted to:
determine a driving condition for the fuel cell vehicle based on at least one of a rate of acceleration for the fuel cell vehicle and a road grade for a road segment traversed by the fuel cell vehicle;
access a driving condition-to-power source mapping to identify which of the power sources are appropriate for powering a propulsion system of the fuel cell vehicle during the determined driving condition, wherein:
when the determined driving condition comprises a first driving condition the driving condition-to-power source mapping maps the first battery and the fuel cell stack to provide power to the propulsion system and maps the second battery to idle or only provide power to the propulsion system when needed,
when the determined driving condition comprises a second driving condition the driving condition-to-power source mapping maps the second battery and the fuel cell stack to provide power to the propulsion system and maps the first battery to idle or only provide power to the propulsion system when needed, and
the first driving condition has at least one of a higher power demand and a lower energy demand than the second driving condition; and
assess operating conditions of each of the power sources, select one or more power sources from the appropriate power sources based on the operating conditions of each of the power sources, and control the one or more power sources to deliver power to the propulsion system.
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