A fuel cell power source and electric vehicle

Abstract

The invention discloses a fuel cell power supply, comprising n parallel power supply modules, where n is a positive integer greater than 1; each power supply module is composed of an independent fuel cell module and a power battery module in parallel, with a control module and a The controllable switch; the fuel cell module contains the methanol reformer, the burner and the fuel cell stack, and the control module controls the switch for regulating the output of the power module. The present invention also provides an electric vehicle provided with a fuel cell power source. When the vehicle is running, the switch Km of any power supply module can be controlled to adapt to the target power required by the vehicle according to the power requirements of the vehicle. The switches Kf and Kb can also be adjusted according to the state of the battery SOC and the power generation state of the fuel cell module, so as to achieve the power required by the vehicle at the same time. According to the different battery temperature, the switch Kf of any power module can be controlled to heat the battery to keep the temperature of the battery balanced.

Description

technical field [0001] The present invention relates to a fuel cell power source and an electric vehicle. Background technique [0002] The power system of a fuel cell vehicle is composed of a fuel cell engine and a power battery dual power source, which is also the biggest difference from traditional vehicles and pure electric vehicles. Among them, the methanol reforming fuel cell is a solution. The technical solution of using methanol reforming to produce hydrogen can effectively avoid the problems of insufficient hydrogenation facilities and high hydrogen cost. It is one of the effective solutions for new energy vehicles in the future. However, at present, methanol reforming fuel cells usually use a single reformer, a single burner, and a single fuel cell stack in parallel with the power battery stack. length, temperature imbalance, etc. SUMMARY OF THE INVENTION [0003] In view of the above-mentioned prior art, the present invention provides a fuel cell power source ...

AI Technical Summary

Problems solved by technology

The present invention adopts a combination scheme of multiple reformers, burners, and fuel cell stacks, which can effectively solve the problems of poor fuel cell power followability, inflexible layout, long start-up time, and unbalanced temperature.

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