US 12,431,517 B2
Fuel cell system
Kazuhide Shimada, Kanagawa (JP)
Assigned to Nissan Motor Co., Ltd., Yokohama (JP); and Renault S.A.S., Boulogne-Billancourt (FR)
Appl. No. 18/002,671
Filed by Nissan Motor Co., Ltd., Yokohama (JP); and RENAULT S.A.S., Boulogne-Billancourt (FR)
PCT Filed Jul. 21, 2020, PCT No. PCT/IB2020/000625
§ 371(c)(1), (2) Date Dec. 21, 2022,
PCT Pub. No. WO2022/018473, PCT Pub. Date Jan. 27, 2022.
Prior Publication US 2023/0299322 A1, Sep. 21, 2023
Int. Cl. H01M 8/04 (2016.01); H01M 8/04014 (2016.01); H01M 8/04701 (2016.01); H01M 8/04746 (2016.01); H01M 8/2418 (2016.01)
CPC H01M 8/04708 (2013.01) [H01M 8/04014 (2013.01); H01M 8/04753 (2013.01); H01M 8/2418 (2016.02)] 5 Claims
OG exemplary drawing
 
1. A fuel cell system comprising:
a fuel cell module including a first fuel cell and a second fuel cell arranged in series such that a fuel gas circulates in a direction from the first fuel cell toward the second fuel cell and an oxidant gas circulates in a direction from the second fuel cell toward the first fuel cell, the first fuel cell being at least configured to reform the fuel gas;
an oxidant gas temperature adjustment device configured to adjust a temperature of the oxidant gas supplied to the fuel cell module; and
a temperature control unit configured to set a target temperature of the oxidant gas supplied to the fuel cell module such that a temperature of the first fuel cell and a temperature of the second fuel cell do not exceed a prescribed upper-limit temperature, and configured to control the oxidant gas temperature adjustment device based on the target temperature, and
the temperature control unit being configured to calculate the target temperature T as follows
T=Tmax−ΔT1−ΔT2(ΔT1>0),
T=Tmax−ΔT2(ΔT1≤0), or
T=T max(ΔT2<0 and ΔT1+ΔT2<0),
where T is the target temperature, Tmax is an upper-limit temperature, ΔT1 is a difference obtained by subtracting a temperature at an inlet of the first fuel cell from a temperature at an outlet thereof, and ΔT2 is a difference obtained by subtracting a temperature at an inlet of the second fuel cell from a temperature at an outlet thereof.