Electricity-electricity hybrid fuel cell vehicle hydrothermal management system and control method thereof

Abstract

The invention discloses an electricity-electricity hybrid fuel cell vehicle hydrothermal management system and a control method thereof. The electricity-electricity hybrid fuel cell vehicle hydrothermal management system comprises a fuel cell stack, a power cell system, a power cell thermal management system, a fuel cell cooling system, a controller and a detection unit, wherein the power cell thermal management system comprises a first electric three-way valve, a PTC heater, a second electric three-way valve, the power cell system, a second water pump, a third electric three-way valve, a radiator fan and a radiator, the fuel cell cooling system comprises a first water pump, the first electric three-way valve, the radiator, the radiator fan, the third electric three-way valve, a heat preservation water storage tank, the fuel cell stack and a condenser, the detection unit comprises two temperature detection units and a pressure detection unit, and the controller controls the working states of the PTC heater, the water pump and the radiator fan according to the detection results of the temperature detection units, so that low-temperature cold start and constant-temperature operationstate control of the fuel cell system and the power cell system are carried out.

Description

Technical field [0001] The invention belongs to the technical field of fuel cell thermal management, in particular to an electric-electric hybrid fuel cell vehicle water-heat management system structure and a control method thereof. Background technique [0002] With the shortage of fossil energy, various countries and major automobile companies in the world have gradually shifted their R&D focus to the development of new energy vehicles. Due to its high efficiency, reduced greenhouse gas emissions, and pollution-free characteristics, hydrogen energy has gradually entered the key areas of research and development of major auto companies. [0003] Proton exchange membrane fuel cells have been widely used in transportation and vehicles due to their operating temperature of 60-65°C, high current density and only water as the reaction product. However, due to the poor low-temperature cold-start performance and poor dynamic responsiveness of its core component, the fuel cell stack, fue...

AI Technical Summary

Problems solved by technology

However, due to the poor low-temperature cold start performance and poor dynamic response of the fuel cell stack, the core component of fuel cell vehicles, it is difficult to promote and apply them on a large scale in my country.

In response to this problem, the industry generally adopts the technical solution of mixing the lithium-ion power battery system and the fuel cell system as the energy source to make up for it, but this solution still has technical difficulties such as complex structure, redundant water and heat management system, and high design difficulty.

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