Fuel cell control method and device

• Main Authors: ZHENG ZHIQIANG, WANG FEI, WANG HAIYAN, DONG JIABO, SONG BOZHEN
• Format: Patent
• Language: Chinese; English
• Published: 24.04.2020
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention provides a fuel cell control method and device. The method comprises the following steps: obtaining the residual electric quantity of a power cell at a first moment after electric equipment is started; comparing the residual electric quantity with a first electric quantity threshold; when the residual electric quantity is greater than the first electric quantity threshold, selectinga power point smaller than the theoretical charging power as the output power of a fuel cell so as to control the fuel cell to output; and when the residual electric quantity is less than the first electric quantity threshold, selecting a power point greater than the theoretical charging power as the output power of the fuel cell so as to control the fuel cell to output. In this way, proper charging power is selected according to the interval where the residual electric quantity of the power cell is located, and the fuel cell can always work in an efficient charging-discharging area. After theelectric equipment operat