Temperature Characteristics of Li-Ion Batteries

2014 ◽  
Vol 1008-1009 ◽  
pp. 274-276
Author(s):  
Hong Wei Wang ◽  
Zi Qiang Tao ◽  
Yan Ling Fu ◽  
Hong Bai ◽  
Hai Qing Xiao
Keyword(s):  
Temperature Cycling ◽  
Safety Performance ◽  
Quality And Safety ◽  
Li Ion Batteries ◽  
Temperature Characteristics ◽  
Cycling Test ◽  
Li Ion ◽  
Temperature Cycling Test

Two kinds of import laptop battery and one kind of domestic laptop battery were investigated in the temperature cycling test. The results showed that all the samples didn’t fire, explosion and leakage in the temperature cycling tests. But the shell glue of domestic laptop battery was disabled more serious then that of import laptop battery and it still exist some security risk.Therefore, There is a long way to go to investigate and improve the quality and safety performance of some laptop battery.

scholarly journals Effects of Overdischarge Rate on Thermal Runaway of NCM811 Li-Ion Batteries

Energies ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3885
Author(s):  
Dong Wang ◽  
Lili Zheng ◽  
Xichao Li ◽  
Guangchao Du ◽  
Zhichao Zhang ◽  
...  
Keyword(s):  
Thermal Runaway ◽  
Safety Performance ◽  
Maximum Temperature ◽  
Li Ion Batteries ◽  
Battery Safety ◽  
Safety Research ◽  
Battery Capacity ◽  
Temperature Environment ◽  
Battery Packs ◽  
Li Ion

Overdischarge often occurs during the use of battery packs, owing to cell inconsistency in the pack. In this study, the overdischarge behavior of 2.9 Ah cylindrical NCM811 [Li(Ni0.8Co0.1Mn0.1)O2] batteries in an adiabatic environment was investigated. A higher overdischarge rate resulted in a faster temperature increase in the batteries. Moreover, the following temperatures increased: Tu, at which the voltage decreased to 0 V; Ti, at which the current decreased to 0 A; and the maximum temperature during the battery overdischarge (Tm). The following times decreased: tu, when the voltage decreased from 3 to 0 V, and ti, when the current decreased to 0 A. The discharge capacity of the batteries was 3.06–3.14 Ah, and the maximum discharge depth of the batteries was 105.51–108.27%. Additionally, the characteristic overdischarge behavior of the batteries in a high-temperature environment (55 °C) was investigated. At high temperatures, the safety during overdischarging decreased, and the amount of energy released during the overdischarge phase and short-circuiting decreased significantly. Shallow overdischarging did not significantly affect the battery capacity recovery. None of the overdischarging cases caused fires, explosions, or thermal runaway in the batteries. The NCM811 batteries achieved good safety performance under overdischarge conditions: hence, they are valuable references for battery safety research.

Fiber alignment shift in temperature cycling test

1998 ◽  
Author(s):  
Yih-Cheng Sheu ◽  
Cheng-Huang Chen ◽  
Chy-Pen Chien ◽  
Jao-Hwa Kuang ◽  
Wood-Hi Cheng ◽  
...  
Keyword(s):  
Temperature Cycling ◽  
Fiber Alignment ◽  
Cycling Test ◽  
Temperature Cycling Test

Can Power Cycling Life of Solder Joint Interconnections be Assessed on the Basis of Temperature Cycling Tests?

1989 ◽  
Vol 111 (4) ◽  
pp. 310-312 ◽  
Author(s):  
E. Suhir
Keyword(s):  
Fatigue Life ◽  
Solder Joint ◽  
Temperature Cycling ◽  
Cycling Test ◽  
Test Conditions ◽  
Power Cycling ◽  
Temperature Cycling Test ◽  
Cycling Life

We discuss how temperature cycling test conditions could be modified to be used for a tentative evaluation of the fatigue life of solder joint interconnections in surface mounted devices subjected to power cycling.

scholarly journals Surface-Engineered Li4Ti5O12 Nanostructures for High-Power Li-Ion Batteries

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Binitha Gangaja ◽  
Shantikumar Nair ◽  
Dhamodaran Santhanagopalan
Keyword(s):  
Surface Layer ◽  
High Power ◽  
Rate Capability ◽  
Temperature Cycling ◽  
High Rate ◽  
Li Ion Batteries ◽  
Li Ion Battery ◽  
Charging Rate ◽  
Extended Aging ◽  
Li Ion

AbstractMaterials with high-power charge–discharge capabilities are of interest to overcome the power limitations of conventional Li-ion batteries. In this study, a unique solvothermal synthesis of Li4Ti5O12 nanoparticles is proposed by using an off-stoichiometric precursor ratio. A Li-deficient off-stoichiometry leads to the coexistence of phase-separated crystalline nanoparticles of Li4Ti5O12 and TiO2 exhibiting reasonable high-rate performances. However, after the solvothermal process, an extended aging of the hydrolyzed solution leads to the formation of a Li4Ti5O12 nanoplate-like structure with a self-assembled disordered surface layer without crystalline TiO2. The Li4Ti5O12 nanoplates with the disordered surface layer deliver ultrahigh-rate performances for both charging and discharging in the range of 50–300C and reversible capacities of 156 and 113 mAh g−1 at these two rates, respectively. Furthermore, the electrode exhibits an ultrahigh-charging-rate capability up to 1200C (60 mAh g−1; discharge limited to 100C). Unlike previously reported high-rate half cells, we demonstrate a high-power Li-ion battery by coupling Li4Ti5O12 with a high-rate LiMn2O4 cathode. The full cell exhibits ultrafast charging/discharging for 140 and 12 s while retaining 97 and 66% of the anode theoretical capacity, respectively. Room- (25 °C), low- (− 10 °C), and high- (55 °C) temperature cycling data show the wide temperature operation range of the cell at a high rate of 100C.

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