Influence of Heating Area and Heating Power on Lithium Ion Battery Thermal Runaway Test

2021 ◽  
Keyword(s):  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Heating Time ◽  
Thermal Runaway ◽  
Heating Power ◽  
Test Method ◽  
Battery System ◽  
Important Method ◽  
A Cell ◽  
Time Required

Thermal propagation test of lithium-ion battery is an important method to verify the safety of battery system, and how to effectively trigger the thermal runaway of a cell and minimize the energy introduced into the system become the key of test method design. In this work, the influence of different heating area and different heating power on thermal runaway of prismatic cells and pouch cells is studied. The results show that when the heating area is fixed, the heating power increases, the heating time required to trigger the thermal runaway of the cells becomes shorter. The energy needed to be introduced becomes smaller, but there will be a minimum value of the introduced energy. On the other hand, the thermal runaway results of prismatic cells are more sensitive to the change of heating area, and the thermal runaway results of pouch cells are more sensitive to heating power.

Energy Equalization Circuit with Multiple Primary Windings for Li-Ion Battery System

2013 ◽  
Vol 380-384 ◽  
pp. 3374-3377
Author(s):  
San Xing Chen ◽  
Ming Yu Gao ◽  
Guo Jin Ma ◽  
Zhi Wei He
Keyword(s):  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Battery Pack ◽  
Li Ion Battery ◽  
Battery System ◽  
Multiple Primary ◽  
In Series ◽  
A Cell ◽  
Li Ion ◽  
Number Of Cells

In this paper, a cell equalization circuit based on the Flyback topology is proposed for the Lithium-ion battery pack. Multiple transformers are employed in this circuit, equal to the number of cells in the pack. All the primary windings are coupled in series to provide the equalizing energy form the whole battery pack to the specific under charged cells. The structure and principle of the circuit is discussed, finally a prototype of four cells is presented to show the outstanding equalization efficiency of the proposed circuit.

Heating power effect on the thermal runaway characteristics of large-format lithium ion battery with Li(Ni1/3Co1/3Mn1/3)O2 as cathode

Energy ◽  
2022 ◽  
Vol 239 ◽  
pp. 121885
Author(s):  
Zonghou Huang ◽  
Ting Shen ◽  
Kaiqiang Jin ◽  
Jinhua Sun ◽  
Qingsong Wang
Keyword(s):  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Thermal Runaway ◽  
Heating Power ◽  
Large Format ◽  
Power Effect

Influence of ambient pressure and heating power on the thermal runaway features of lithium-ion battery

2020 ◽  
pp. 1-24
Author(s):  
Xiantao Chen ◽  
Xu Zhang ◽  
Haibin Wang ◽  
Jingyun Jia ◽  
Song Xie ◽  
...  
Keyword(s):  
Heat Release ◽  
Lithium Ion Battery ◽  
Dynamic Pressure ◽  
Ambient Pressure ◽  
Lithium Ion ◽  
Fire Risk ◽  
External Pressure ◽  
Thermal Runaway ◽  
Heating Power ◽  
Low Oxygen

Abstract The thermal runaway hazards pose serious threat to the application and transport of lithium-ion battery on the aircraft. Hence the researches of thermal safety in flight condition are necessary. In this study, the tests were conducted in a dynamic pressure chamber to study the effects of ambient pressure and heating power on the thermal runaway characteristics. The results show that the fierce behaviors of jet fire, deflagration and explosion only were observed in high ambient pressure with high heating power. The open time of safety valve is advanced as pressure from 95 kPa to 20 kPa. The parameters of heat release rate (HRR), total heat release (THR), cell surface temperature, peak concentration of CO2 and mass loss decrease as the descend of external pressure or heating power. The peak values of hydrocarbon (CHx) and CO increase with the descent of pressure, but decrease as the reduction of heating power. The effects of ambient pressure on the thermal runaway (TR) fire behaviors mainly attribute to the low oxygen density. The time of heating and smoking may account for the difference of TR behaviors with various heating power. It is revealed that the fire risk and the hazards of toxic/flammable gas emissions are tightly relative to the TR behaviors. Those results provide valuable proposals and inspiration for the safety warning and hazard reduction under low pressure.

High-energy-density lithium-ion battery using a carbon-nanotube–Si composite anode and a compositionally graded Li[Ni0.85Co0.05Mn0.10]O2 cathode

2016 ◽  
Vol 9 (6) ◽  
pp. 2152-2158 ◽  
Author(s):  
Joo Hyeong Lee ◽  
Chong S. Yoon ◽  
Jang-Yeon Hwang ◽  
Sung-Jin Kim ◽  
Filippo Maglia ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Energy Density ◽  
Lithium Ion Battery ◽  
State Of The Art ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Rechargeable Battery ◽  
Composite Anode ◽  
Battery System

A Li-rechargeable battery system based on state-of-the-art cathode and anode technologies demonstrated high energy density, meeting demands for vehicle application.

Simulation of Onset and Propagation of Heat within Lithium-ion Battery Pack During Thermal Runaway

2021 ◽  
Author(s):  
Chalukya Bhat ◽  
Janamejaya Channegowda ◽  
Victor George ◽  
Shilpa Chaudhari ◽  
Kali Naraharisetti
Keyword(s):  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Thermal Runaway ◽  
Battery Pack

An electrochemical-thermal coupled overcharge-to-thermal-runaway model for lithium ion battery

2017 ◽  
Vol 364 ◽  
pp. 328-340 ◽  
Author(s):  
Dongsheng Ren ◽  
Xuning Feng ◽  
Languang Lu ◽  
Minggao Ouyang ◽  
Siqi Zheng ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Thermal Runaway
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