Energy control method of hydrogen fuel cell and power cell hybrid power bus

Abstract

The invention discloses an energy control method of a hydrogen fuel cell and power cell hybrid power bus. The method comprises the following steps of: collecting motor power data, selecting SOC valueswithin a certain range around the average power value of the motor, and conducting interpolation distribution on the power range of a galvanic pile, increasing vehicle parking judgment, locking the variable-load frequency standard of the galvanic pile, and evaluating whether the variable-load frequency standard meets requirements or not, judging the SOH condition of the battery, and increasing the low SOC to forcibly start the reactor. Based on the galvanic pile system controller, the BMS and the whole vehicle controller system, energy control strategy assignment and optimization can be completed through real-time data. And the VCU is used for judging the power state of the whole vehicle, so that the low-power power supply and low-SOC forced starting operation of the parking galvanic pileare increased, and the healthy working states of the galvanic pile and the battery are further ensured. Therefore, the galvanic pile outputs as low as possible on the basis of meeting the power requirement of the whole vehicle as much as possible, and hydrogen consumption is reduced while the service life of the galvanic pile is ensured. And meanwhile, the battery can work in a relatively high and stable SOC interval, and the service life of the battery is prolonged.

Description

technical field [0001] The invention relates to the field of new energy passenger cars, in particular to an energy control method for a hydrogen fuel cell and power battery hybrid electric passenger car. Background technique [0002] A hydrogen fuel cell is a device that uses hydrogen and oxygen / air as reaction gases, catalyzes a chemical reaction, lowers the energy barrier of the oxygen reduction reaction, and makes the reaction generate electrons, thereby forming a current and providing electrical energy for the load. The device utilizes the Carnot heat cycle, has a very high thermoelectric conversion efficiency, only produces water with zero pollution to the environment, and is absolutely environmentally friendly. At present, it has been widely used in portable power supply, fixed power supply / station, road transportation, marine transportation and military fields. However, there is a time window for the electrochemical reaction of the fuel cell, that is, the power respo...

AI Technical Summary

Problems solved by technology

[0005] Considering the efficiency and lifespan of batteries and fuel cells in the prior art, there is a high-efficiency and long-life working range

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