A fuel cell control method for passenger cars

Abstract

The present invention relates to a fuel cell control method for passenger vehicles, comprising the following steps: 1) starting the vehicle; 2) receiving a stack start command; 3) acquiring the SOC value of the current power battery, and judging whether it is not greater than a threshold value a, and if so, Then issue the FC ON command, if not, then stop; 4) Compare the SOC value with the threshold value b, 41) When b<SOC≤a, the on-board VCU sends the target power x, and go to step 5); 42) When SOC≤b When , the on-board VCU sends out the target power y, and goes to step 7); 5) compares the SOC value with the threshold value c, when a<SOC≤c, sends out the target power z, goes to step 6), otherwise, returns to step 4); 6 ) When SOC ≥ c, the FCU responds to shutdown; 7) Compare with the threshold d, when SOC ≥ d, the vehicle-mounted VCU sends the target power x, and go to step 5), otherwise, return to step 42). Compared with the prior art, the present invention has the advantages of safe operation, high safety performance, improved fuel utilization rate, fast charging and the like.

Description

technical field [0001] The invention relates to the field of motor vehicle fuel cell control, in particular to a fuel cell control method for passenger vehicles. Background technique [0002] The country's requirements for motor vehicle emission standards are getting higher and higher. The diesel internal combustion engine used in the passenger car industry emits more waste pollution. It needs a zero-emission, zero-pollution, more low-carbon and environmentally friendly sustainable energy to solve the problem of environmental pollution. . [0003] The development of new energy vehicles is guided by a series of favorable policies of the state, and the technology development is becoming more and more mature. The repeated improvement of the energy density of power batteries has continuously improved the cruising range of the vehicles. However, pure electric vehicles can only cover urban buses and short-distance travel routes at present. The demand for long-distance transportat...

AI Technical Summary

Problems solved by technology

[0003] The development of new energy vehicles is guided by a series of favorable policies of the country, and the technology development is becoming more and more mature. The energy density of power batteries has been continuously improved, which has continuously increased the cruising range of vehicles. However, pure electric vehicles can only cover urban public transport and short-distance travel routes at present. The demand for long-distance transportation is currently dominated by traditional diesel vehicles, and there is a gap in the market

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