Thermal management system of fuel cell vehicle

Abstract

The present disclosure relates to a thermal management system of a fuel cell vehicle, the thermal management system including: a cooling line configured to pass through a power electronic component of the vehicle and to allow a coolant to circulate therein; a cooling unit provided in the cooling line and configured to cool the coolant; a driving member disposed in the cooling line and configured to drive the vehicle; and a bypass line having a first end connected to the cooling line at a first point between the drive member and an outlet of the cooling unit, and a second end connected to the cooling line at a second point between the drive member and an inlet of the cooling unit, therefore, the beneficial effects of improving the cooling efficiency and the cooling performance and improving the safety and the reliability can be achieved.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and benefit from Korean Patent Application No. 10-2020-0156240 filed at the Korean Intellectual Property Office on November 20, 2020, the entire contents of which are incorporated herein by reference. technical field [0003] The present invention relates to a thermal management system of a fuel cell vehicle, more particularly, to a thermal management system of a fuel cell vehicle capable of improving cooling efficiency and cooling performance as well as improving safety and reliability. Background technique [0004] A fuel cell vehicle (for example, a hydrogen vehicle) is configured to autonomously generate electricity by means of a chemical reaction between fuel (hydrogen) and air (oxygen), and travel by operating an electric motor. [0005] Generally, fuel cell vehicles include 2 ) A fuel cell stack for generating electricity through redox reactions; a fuel supply device for supplyi...

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the flow rate of the coolant is inevitably reduced (reduced flow rate due to pressure loss)

[0011] In addition, since the cooling performance of the coolant decreases due to the decrease in the flow rate of the coolant, in order to ensure a sufficient flow of the coolant, it is inevitable to increase the power consumption of the pump for circulating the coolant, so in cooling the power electronics that need to be cooled Deterioration in efficiency and performance of components (i.e., power electronics that generate high heat when the vehicle is stationary)

[0012] Therefore, various types of research have been conducted recently to effectively cool power electronic components that operate when the vehicle is stationary, but the research results are still insufficient

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