Fuel cell electric vehicle integrated hydrothermal management system and control strategy

Abstract

The invention provides a fuel cell electric vehicle integrated hydrothermal management system and a control strategy. An electronic water pump is sequentially communicated with a first three-way control valve, a cooling port of a motor, a first-stage intercooling device, an electronic heater, a deionizer, a cooling port of a fuel cell, an electronic thermostat, a second-stage intercooling device and a water tank to form a closed loop; the electronic thermostat selectively communicates the outlet of the fuel cell cooling port with the inlet of the secondary intercooling device or the inlet of the electronic water pump according to the temperature of the inlet of the electronic thermostat; and the hydrothermal controller obtains the detection values of a first temperature sensor, a second temperature sensor and a third temperature sensor and controls the electronic water pump, an electronic fan, an electronic heater, an electronic radiator, the first three-way control valve and the second three-way control valve. The system has the advantages of high power output, high variable load response speed, high working efficiency, high cruising ability and the like.

Description

technical field [0001] The invention relates to the field of water and heat management of hybrid power, in particular to an integrated water and heat management system and control strategy for a fuel cell electric vehicle. Background technique [0002] In recent years, the state has vigorously supported the new energy industry, and more and more new energy vehicles have been put into mass production and realized marketization. For example, pure electric vehicles have the advantages of no pollution and low noise, and have good development prospects. However, pure electric vehicles have Problems such as short driving range and difficulty in charging have limited the development of pure electric vehicles to a certain extent. The proposed range-extended hybrid power system has better solved the mileage problem of pure electric vehicles, and is a major research hotspot in the field of energy and power. [0003] The fuel cell-battery hybrid power system mainly includes key compon...

AI Technical Summary

Problems solved by technology

Although the structure of this water heat management strategy is simple and easy to implement, it cannot realize the heat exchange between components, and does not realize the efficient utilization of heat from a global perspective, which will inevitably reduce the energy utilization rate of the system

Especially when the components need cold start, the traditional independent water and heat management strategy is difficult to achieve fast start response, and the start delay is long

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