Fuel cell domain control system and control strategy thereof

Abstract

The invention discloses a fuel cell domain control system and a control strategy thereof, belongs to the technical field of fuel cell control, and integrates the functions of five parts, namely a vehicle control unit (VCU), a fuel cell system controller (FCU), a hydrogen management system controller (HMS), a vehicle comprehensive thermal management system controller (ICS) and a data transmission controller T-Box, into a domain controller. The domain controller is composed of a domain controller slave station and a domain controller master station, and the domain controller slave station is only physically connected with the whole vehicle equipment end and has the main functions of IO signal acquisition, signal driving, CAN network communication, vehicle-mounted remote data transmission and the like; the domain controller master station adopts a standardized software innovation platform, provides a universal control strategy algorithm for the functional domain, realizes the function centralization of the whole vehicle level software in the hydrogen-related functional domain of the fuel cell, can quickly respond to the requirements of the whole vehicle hydrogen electricity use safety, energy management and the like through the mutual calling of signals among software modules, and has a wide application prospect. Cooperative control of power-on and power-off and fault diagnosis of the whole vehicle and the fuel cell are realized.

Description

technical field [0001] The invention relates to the technical field of fuel cell control, and more particularly to a fuel cell domain control system and a control strategy thereof. Background technique [0002] The main energy source of a fuel cell electric vehicle comes from the fuel cell system and the power battery system. The fuel cell system is a power generation device that generates electricity through the electrochemical reaction of hydrogen and oxygen (from air). The fuel cell boosts DC / DC regulation. The voltage reaches the high-voltage platform (400-750VDC) of the vehicle power battery system. However, hydrogen is a flammable and explosive dangerous gas, and its explosion limit range of mixing with air is 4.0% to 75.6% (volume concentration). Therefore, the safety of hydrogen and electricity consumption of fuel cell electric vehicles is particularly important, especially in the safety control and communication mechanism of the whole vehicle. [0003] At present,...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a fuel cell domain control system and its control strategy to overcome the shortcomings of the existing fuel cell domain control system, such as time delay and the failure of fast and reliable communication and control for the safety of hydrogen and electricity in the vehicle.

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