Control method of fuel cell hybrid vehicle

Abstract

The invention relates to a control method of a fuel cell hybrid vehicle, which comprises the following steps: a vehicle controller is internally provided with a motor status switching module, a driver order explaining module, a power cell charged status verifying module, a road condition self-adaption compensating module, a vehicle diagnosis correcting module and an equivalent hydrogen consumption optimal distributing module; the vehicle controller reads a gear signal, a pedal signal and TTCAN (triggered controller area network) bus data; the motor status switching module switches the motor status; the driver order explaining module confirms a motor target torque; the power cell charged status verifying module verifies a SOC (system on chip) value, TTCAN bus voltage and power cell current; the road condition self-adaption compensating module computes the auxiliary power and the DC (direct current) / DC dynamic compensation time constant of the vehicle; the vehicle diagnosis correcting module corrects the motor target torque and the DC / DC target current; the equivalent hydrogen consumption optimal distributing module optimally distributes the vehicle target power between the power cell and the fuel cell; and the modified motor target torque and the DC / DC target current are transmitted to a motor controller and a DC / DC controller so as to control the output power of the motor andthe fuel cell.

Description

Technical field [0001] The invention relates to a vehicle control method, in particular to a fuel cell hybrid power vehicle control method oriented to general urban working conditions. Background technique [0002] The lack of oil resources and environmental pollution are major issues that governments, scientific research institutions and multinational companies are concerned about today. Many governments and companies invest a lot of resources in researching technical solutions to this problem. Fuel cells (or proton exchange membrane fuel cells) rely on the chemical reaction of hydrogen and oxygen to generate electricity and produce water, with low noise and no pollution, so they are considered to be an important technical solution to resource and environmental problems. [0003] Currently, fuel cells are mainly used in fuel cell hybrid vehicles. The fuel cell hybrid vehicle generally adopts the configuration of fuel cell plus power battery or super capacitor. The power battery ...

AI Technical Summary

Problems solved by technology

Various vehicle control methods for fuel cell hybrid electric vehicles are also provided in the prior art, including rule-based vehicle control methods, instantaneous optimization, global optimization and braking energy feedback vehicle control methods, etc., but there is no general-purpose Vehicle Control Method for Urban Working Conditions

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