Research on the Lithium Battery Pack Cooling by Thermal Simulation

2014 ◽  
Vol 986-987 ◽  
pp. 1015-1018
Author(s):  
Yi Ning Chen ◽  
Ce Yuan Li
Keyword(s):  
High Temperature ◽  
Thermal Model ◽  
Lithium Battery ◽  
Lithium Ion ◽  
Battery Pack ◽  
Battery Life ◽  
Cooling Method ◽  
Temperature Environment ◽  
High Temperature Environment

Batteries are used the energy storage of the pure electric vehicle. When the battery pack work in the high temperature environment for a long-term, permanent damage that high temperature does to the battery cannot be restored, the battery life will be drastically reduced. When the batteries temperature reaches a relatively high value, the battery pack will caught fire. This paper firstly analyzed the characteristic of the Lithium-ion Battery by batteries experiment. On the basis of the thermal experiment ,this paper do a lot of research of the cooling method by ANSYS and verified the accuracy of the model of the thermal model.

scholarly journals Heating Detection and Temperature Control Method of Power Lithium Battery in Pure Electric Vehicle

CONVERTER ◽  
2021 ◽  
pp. 01-08
Author(s):  
Guanqiang Ruan Et al.
Keyword(s):  
Boundary Conditions ◽  
Lithium Ion Battery ◽  
Electric Vehicles ◽  
Temperature Control ◽  
Heat Generation ◽  
Thermal Model ◽  
Lithium Battery ◽  
Lithium Ion ◽  
Battery Pack ◽  
Electrochemical Characteristics

For the power battery of electric vehicles, especially pure electric vehicles, there is no perfect and comprehensive detection system and management system in the production and use links. By analyzing the working principle, structure and electrochemical characteristics of lithium-ion battery, the heat generation mechanism of lithium-ion battery was studied. In this paper, the factors that affect the temperature characteristics of Li ion battery are described, and the corresponding relationship between the temperature rise of the battery and the ambient temperature is established. At the same time, the optimal temperature range of the battery pack discharge efficiency is determined. In this paper, the thermal effect model and heat generation rate model of lithium-ion battery are established, and then the thermal conductivity, specific heat capacity, density and other parameters of the thermal model are calculated. Finally, the initial and boundary conditions of the thermal model are determined, the simulation of heat generation temperature field is realized, and the temperature distribution of the battery after heat generation is obtained. In this paper, the flow mode of air is analyzed, and the fluid structure coupling model of battery air is established. Finally, the thermal field of the battery pack is simulated by setting the solver mode and boundary conditions, which makes a theoretical analysis for the preliminary design of the temperature control battery box. The test results show that the method proposed in this paper can meet the technical requirements of power lithium battery heating management of pure electric vehicles..

Active Cooling Method for Downhole Systems in High Temperature Environment

2019 ◽  
Author(s):  
Wenkai Gao ◽  
Ke Liu ◽  
Yinao Su ◽  
Limin Sheng ◽  
Chong Cao ◽  
...  
Keyword(s):  
High Temperature ◽  
Active Cooling ◽  
Cooling Method ◽  
Temperature Environment ◽  
High Temperature Environment

Long Term High-Temperature Environmental Effect on Impact Toughness in Austenitic Alloys

2014 ◽  
Vol 627 ◽  
pp. 205-208
Author(s):  
Mattias Calmunger ◽  
Guo Cai Chai ◽  
Sten Johansson ◽  
Johan Moverare
Keyword(s):  
High Temperature ◽  
Impact Toughness ◽  
Stainless Steels ◽  
Power Plants ◽  
Austenitic Stainless Steels ◽  
Alloy 617 ◽  
Temperature Environment ◽  
The Impact ◽  
High Temperature Environment

Structural integrity is crucial for the safety of power plants with higher efficiency to meet the increasing global energy consumption. High-temperature environment will demand not only improved high-temperature corrosion resistance but also a maintained sufficient toughness. This study investigates how long term high-temperature environment influence the impact toughness of two austenitic stainless steels (AISI 304 and Sandvik SanicroTM 28) and one nickel-bas alloy (Alloy 617). Alloy 617 has shown increasing impact toughness with both increasing temperature and time, up to 700°C and 3 000 hours, while the two austenitic stainless steels have shown the opposite for the same conditions. At 10 000 hours the impact toughness of Alloy 617 has decreased but the alloy still possess great toughness. Both austenitic stainless steels show embrittlement due to brittle σ-phase and Alloy 617 seems to gain good impact toughness performance from small evenly distributed precipitates.

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