Fuel cell power generation efficiency comprehensive improvement system and control method

Abstract

The invention discloses a fuel cell power generation efficiency comprehensive improvement system and a control method. The system is characterized in that a one-way electromagnetic valve is connectedbetween a fuel cell control unit and a deionizer, the deionizer is connected with a fuel cell in connection with a temperature control electromagnetic valve, outlets of the temperature control electromagnetic valve are connected with a two-way electromagnetic valve and a heat radiator respectively, the two-way electromagnetic valve is connected with the heat radiator, outlets of the two-way electromagnetic valve are connected with the deionizer and a heat insulation energy accumulator respectively, and a temperature sensor is arranged between the fuel cell and the temperature control electromagnetic valve. The fuel cell power generation efficiency comprehensive improvement system and the control method have advantages that since the temperature of cooling liquid in starting and an appropriate temperature (T0) required by the fuel cell are small in difference, polarization of the fuel cell is substantially relieved, and fuel cell power generation efficiency is improved.

Description

technical field [0001] The invention relates to the field of design and manufacture of fuel cell vehicles, in particular to a system and control method for comprehensively improving power generation efficiency of fuel cells. Background technique [0002] With the increasingly prominent environmental and energy issues, new energy vehicles have become the inevitable direction of future automotive development. Fuel cell vehicles are more environmentally friendly new energy vehicles, and have a longer cruising range than pure electric vehicles, and the time needed to replenish energy is about one sixtieth of that of pure electric vehicles. Its non-polluting characteristics and energy conversion efficiency are unmatched by internal combustion locomotives. The high power generation efficiency of the fuel cell system can make the energy more fully utilized, which has far-reaching significance for alleviating the energy shortage in the current society. [0003] The thermoelectric ...

AI Technical Summary

Problems solved by technology

The dual-source power supply mode of the fuel cell and the lithium battery used in the current fuel cell vehicle, if the way of heating the coolant with a large current increases the power consumption, and the high current and high voltage are not conducive to the stability of the circuit, which increases the lithium battery. battery burden

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