The extended volume plus acceleration calorimeter (EV+-ARC) is used to explore the TR properties of nickel-rich 18650 lithium-ion batteries with the Li[Ni0.8Co0.1Mn0.1]O2 cathode in varied SOC settings. The lithium-ion battery business has been rapidly evolving, with increasing energy density and capacity. However, the subsequent lithium-ion power battery safety incidents have posed a major threat to passengers' personal safety. As a result, greater attention is being paid to lithium-ion battery thermal safety research, such as thermal runaway (TR) mechanism analysis and preventive strategies, and so on. The TR properties of nickel-rich 18650 lithium-ion batteries with Li[Ni0.8Co0.1Mn0.1]O2 cathode in various states of charge (SOC) are investigated using an extended volume plus acceleration calorimeter (EV+-ARC) in this research. Some distinctive parameters from the experiment are selected to examine the influence of SOC on the critical state of TR in order to evaluate the TR features. These parameters include battery voltage, surface temperature, temperature increase rate, and so on. The maximum temperature of the battery surface drops as SOC decreases, however the self-generated heat temperature and TR trigger temperature increase as SOC decreases, as shown in the experiment findings.
Author(S) Details
Kun Jiang
School of Control Science and Engineering, Shandong University, Jinan 250061, China.
Pingwei Gu
School of Control Science and Engineering, Shandong University, Jinan 250061, China.
Peng Huang
School of Control Science and Engineering, Shandong University, Jinan 250061, China.
Ying Zhang
School of Control Science and Engineering, Shandong University, Jinan 250061, China.
Bin Duan
School of Control Science and Engineering, Shandong University, Jinan 250061, China.
Chenghui Zhang
School of Control Science and Engineering, Shandong University, Jinan 250061, China.
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