Lithium-ion batteries (LIBs) are widely used in electric vehicles, energy storage power stations and other portable devices for their high energy densities, long cycle life and low self ...
The ultimate goal of battery preheating is to recover battery performance as quickly as possible at low temperatures while considering battery friendliness, …
Further, optimal heating frequency of current pulse at different temperatures is calculated according to the changing of internal impedance. The results show that the optimal variable-frequency pulse pre-heating strategy can heat the lithium-ion battery from −20 C
The battery OCV increases with the SOC increase, meaning that it will not trigger the discharge cut-off voltage when the battery pack is discharged with 1C current rate at high SOC, and the battery temperature gradually increases as …
Most related items These are the items that most often cite the same works as this one and are cited by the same works as this one. Li, Junqiu & Xue, Qiao & Gao, Zhuo & Liu, Zengcheng & Xiao, Yansheng, 2024. "Frequency varying heating strategy for lithium-ion battery rapid preheating under subzero temperature considering the limitation of on …
Battery preheating technology is an important countermeasure to effectively mitigate the performance degradation of lithium batteries in cold environments …
The results show that the optimal variable-frequency pulse pre-heating strategy can heat the lithium-ion battery from −20 C to 5 C in 1000 seconds. Meanwhile, …
A novel electrochemical impedance-thermal coupling model suitable for alternating current (AC) heating over a wide frequency range is proposed, that considers the influence of the high-frequency skin effect on the heat generation rate of the battery according to electrochemical impedance spectroscopy (EIS) test results. ...
The performance of Li-ion battery''s cell is significantly reduced under subzero temperature. In this paper, a self-preheating method for Li-ion battery using battery impedance estimator is presented. For battery impedance estimation, no information of the actual battery''s internal impedance is required, so that the proposed method can be easily and …
The established high-frequency heating strategy is verified, and the impact of low-temperature (253.15 K) preheating of the battery as well as the thermal …
Low-temperature preheating of batteries is fundamental to ensure that electric vehicles exhibit excellent performance ... the optimal heating rate can reach 4.65 K/min at 800 Hz without affecting the service life of …
Alternating current (AC) heating is an efficient manner to improve the lithium-ion battery (LIB) discharge ability at low temperature. This paper proposes an effective method to …
DOI: 10.1016/j.est.2020.101746 Corpus ID: 224893747 Capacity degradation minimization oriented optimization for the pulse preheating of lithium-ion batteries under low temperature @article{Wu2020CapacityDM, title={Capacity …
High-frequency ac preheating methods are advantageous to achieve a miniaturized and lightweight design. In this article, a self-heating circuit topology is used for studying the …
High-frequency AC preheating methods are advantageous to achieve a miniaturized and lightweight design. In this paper, a self-heating circuit topology is used for studying the characteristics of ...
Battery pack is rapidly heated with heating rate of 3.78 °C/min at −30 °C temperature. The electrical performance of lithium-ion battery gradually deteriorates with …
method as preheating. BATTERY PREHEATING Background All batteries suffer in cold temperatures because their electrochemical processes slow and overall internal resistance increases. Figure 3 provides NREL''s data showing an example of loss of power
Passive air preheating is suitable for low energy density batteries such as lead-acid batteries, while active preheating is required for high energy density batteries …
The preheating temperature results of the positive pulse preheating strategy after complete discharge of the battery and the voltage results of the first preheating are shown in Fig. 16. The temperature changes of repeated preheating 4 times after discharging to the cut-off voltage are all shown in Fig. 16 (a), with a cumulative time …
DOI: 10.1016/j.apenergy.2024.123183 Corpus ID: 269367328 Frequency varying heating strategy for lithium-ion battery rapid preheating under subzero temperature considering the limitation of on-board current @article{Li2024FrequencyVH, title={Frequency varying ...
Therefore, it is necessary to use preheating technology to heat the cold battery before starting the EVs, so as to effectively improve the performance of the battery and the vehicle. Low-temperature preheating methods mainly include external heating and internal heating approaches [ 9, 10 ].
As shown in Fig. 3, a classical equivalent circuit model of a lithium-ion battery consists of five components [15], [31]: L is the inductance caused by metallic elements in batteries and connecting wires, it is only obvious at very high frequency; R represents the ohmic resistance; The element W stands for Warburg impedance, related …
demand high requirements for the frequency and amplitude control of the preheating current, and there is a coupling relationship between the amplitude and frequency of the
DOI: 10.1016/j.applthermaleng.2022.118860 Corpus ID: 249831952 Experimental Study on the Mechanism of Frequency-dependent heat in AC Preheating of Lithium-ion Battery at Low Temperature @article{Hu2022ExperimentalSO, title={Experimental Study on the ...
mal frequency range was distributed in the high-frequency area. The optimized heating strategy could achieve a temperature rise from - 20 Cto0 C in 520 s. Zhang et al. [15] embedded a thin nickel foil with certain resistance into the square battery as the internal
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