Numerical investigation of liquid cooling cold plate for power control unit in fuel cell vehicle

2015 ◽  
Vol 55 (7) ◽  
pp. 1077-1088 ◽  
Author(s):  
Ting Wang ◽  
Bo Gu ◽  
Pengcheng Zhao ◽  
Cheng Qian
Keyword(s):  
Fuel Cell ◽  
Power Control ◽  
Numerical Investigation ◽  
Control Unit ◽  
Fuel Cell Vehicle ◽  
Cold Plate ◽  
Liquid Cooling

scholarly journals Investigation on Thermal Resistance and Capacitance Characteristics of a Highly Integrated Power Control Unit Module

Electronics ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 958
Author(s):  
Maosheng Zhang ◽  
Yu Bai ◽  
Shu Yang ◽  
Kuang Sheng
Keyword(s):  
Thermal Resistance ◽  
Power Control ◽  
Electric Vehicles ◽  
Low Cost ◽  
Control Unit ◽  
Underlying Mechanism ◽  
Power Converter ◽  
Liquid Cooling ◽  
Integration Density ◽  
Unit Module

With the increasing integration density of power control unit (PCU) modules, more functional power converter units are integrated into a single module for applications in electric vehicles or hybrid electric vehicles (EVs/HEVs). Different types of power dies with different footprints are usually placed closely together. Due to the constraints from the placement of power dies and liquid cooling schemes, heat-flow paths from the junction to coolant are possibly inconsistent for power dies, resulting in different thermal resistance and capacitance (RC) characteristics of power dies. This presents a critical challenge for optimal liquid cooling at a low cost. In this paper, a highly integrated PCU module is developed for application in EVs/HEVs. The underlying mechanism of the inconsistent RC characteristics of power dies for the developed PCU module is revealed by experiments and simulations. It is found that the matching placement design of power dies with a heat sink structure and liquid cooler, as well as a liquid cooling scheme, can alleviate the inconsistent RC characteristics of power dies in highly integrated PCU modules. The findings in this paper provide valuable guidance for the design of highly integrated PCU modules.

scholarly journals Experimental and numerical investigation on spray cooling of radiator in fuel cell vehicle

2022 ◽  
Vol 8 ◽  
pp. 1283-1294
Author(s):  
Chu-Qi Su ◽  
Shuo Wang ◽  
Xun Liu ◽  
Qi Tao ◽  
Yi-Ping Wang
Keyword(s):  
Fuel Cell ◽  
Numerical Investigation ◽  
Spray Cooling ◽  
Fuel Cell Vehicle

Initialization Time Test and Analysis about the Control Unit of Fuel Cell Vehicle

2013 ◽  
Vol 419 ◽  
pp. 505-510
Author(s):  
Chao Wu ◽  
Wei Ming Liang ◽  
Xu Nian Lai ◽  
Fen Liu
Keyword(s):  
Fuel Cell ◽  
High Voltage ◽  
Power Supply ◽  
Control Unit ◽  
Fuel Cell Vehicle ◽  
High Voltage Power Supply ◽  
Location Data ◽  
Collection Device ◽  
Bench Testing ◽  
Vehicle Testing

The paper introduces the test process of the initialization time of the control unit of Fuel cell vehicle (FCV), including connecting to the high-voltage power supply speedily, connecting to the high-voltage power supply with normal steps, and correspondent vehicle testing and hardware in the loop (HIL) bench testing. By analyzing the hard-wired signal such as key location data from data collection device and by analyzing vehicle CAN signal, the test obtained the general initialization time of each control unit and their correspondent systems, and the time needed for speedy connection to high-voltage power supply, and sorted out the determining negative factor of speedy high-voltage connection. This test could obtain implicit system parameters, which might be referred to when improving vehicle properties.

A study of work and improve of water content in PEMFC with liquid cooling

2020 ◽  
Vol 6 (2) ◽  
pp. 8-21
Author(s):  
Konstantin V. Agapov ◽  
Dmitriy O. Dunikov ◽  
Kirill D. Kuzmin ◽  
Evgeniy V. Stoyanov
Keyword(s):  
Fuel Cell ◽  
Temperature Difference ◽  
Test Bench ◽  
Problem Area ◽  
Solid Polymer ◽  
Liquid Cooling ◽  
Current Voltage ◽  
Additional Resistance ◽  
Overall Performance ◽  
The Heat Balance

In this publication, in addition to focusing on the engineering component in creating our own test bench for trying various modes and the overall performance of solid polymer fuel cells with electric power of more than 2 kW, the features of the result of the operation of a liquid-cooled fuel cell in the field of heat transfer are displayed. It is known that its performance and service life depend on a properly tuned water and thermal balance of the fuel cell. The problem area is described in the insufficient moisture content of the supplied air to the fuel cell and the excess heat in the fuel cell. In this case, the negative consequence is that additional resistance to the rate of the electrochemical reaction is created, as a result of which the generated power decreases. A possible way to solve this problem is proposed: so, according to the heat balance equation, by increasing the temperature difference between the incoming and outgoing heat carrier, more heat energy can be removed. The temperature difference was achieved using a water-air radiator. The increased removal of thermal energy allowed the condensation of part of the moisture inside the fuel cell, maintaining the humidity and conductivity of the membrane, but not allowing flooding of the channels with liquid water, which otherwise could lead to a decrease in performance. During the tests, it was possible to increase the removed power by 321 w, which is 8.4% in excess of the maximum power. Based on the obtained experimental results, dependencies were constructed that are expressed by the current-voltage characteristic, power curve, the amount of heat removed by the water from the fuel cell, and a graph of the change in water temperature at the inlet and outlet of the fuel cell at various stages of operation.

scholarly journals A Review of Hydrogen Purification Technologies for Fuel Cell Vehicles

Catalysts ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 393
Author(s):  
Zhemin Du ◽  
Congmin Liu ◽  
Junxiang Zhai ◽  
Xiuying Guo ◽  
Yalin Xiong ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Carbon Emission ◽  
High Efficiency ◽  
Impurity Content ◽  
Fuel Cell Vehicle ◽  
Research Progress ◽  
Hydrogen Purification ◽  
Fuel Cell Vehicles ◽  
Low Carbon

Nowadays, we face a series of global challenges, including the growing depletion of fossil energy, environmental pollution, and global warming. The replacement of coal, petroleum, and natural gas by secondary energy resources is vital for sustainable development. Hydrogen (H2) energy is considered the ultimate energy in the 21st century because of its diverse sources, cleanliness, low carbon emission, flexibility, and high efficiency. H2 fuel cell vehicles are commonly the end-point application of H2 energy. Owing to their zero carbon emission, they are gradually replacing traditional vehicles powered by fossil fuel. As the H2 fuel cell vehicle industry rapidly develops, H2 fuel supply, especially H2 quality, attracts increasing attention. Compared with H2 for industrial use, the H2 purity requirements for fuel cells are not high. Still, the impurity content is strictly controlled since even a low amount of some impurities may irreversibly damage fuel cells’ performance and running life. This paper reviews different versions of current standards concerning H2 for fuel cell vehicles in China and abroad. Furthermore, we analyze the causes and developing trends for the changes in these standards in detail. On the other hand, according to characteristics of H2 for fuel cell vehicles, standard H2 purification technologies, such as pressure swing adsorption (PSA), membrane separation and metal hydride separation, were analyzed, and the latest research progress was reviewed.

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