An integrated water and heat management system and control strategy for fuel cell electric vehicles

Abstract

The invention provides an integrated water and heat management system and control strategy for fuel cell electric vehicles. The electronic water pump is sequentially connected with the first three-way control valve, the cooling port of the motor, the first-stage intercooler, the electronic heater, the deionizer, The cooling port of the fuel cell, the electronic thermostat, the secondary intercooler and the water tank form a closed-loop communication; the electronic thermostat selectively connects the outlet of the fuel cell cooling port to the inlet of the secondary intercooler according to the temperature of its inlet. Or the inlet of the electronic water pump is connected; the water heat controller obtains the detection values ​​of the first temperature sensor, the second temperature sensor and the third temperature sensor, and the water heat controller controls the electronic water pump, the electronic fan, the electronic heater, the electronic cooling device, the first three-way control valve and the second three-way control valve. The invention has the advantages of large power output, fast response speed of variable load, high work efficiency, strong battery life 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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