The wide application of lithium-ion batteries, end customers also put forward higher and higher requirements for the fast charging performance of lithium-ion batteries. But blindly improve the fast charging performance of lithium battery will bring …
As an effective electrical energy storage device, lithium-ion batteries have the advantages of high energy density, high specific power, high output voltage, low self-discharge, and long service life. They have been widely used in electric vehicles,…
Capacity decay and loss will occur during the cycle of lithium-ion batteries, in order to improve battery capacity and performance, scholars at domestic and international have fully studied the mechanism of lithium-ion battery capacity decay. At pre…
1. Author Information and Article Summary In 2022, Dr. Peipei Xu of Beijing University of Science and Technology developed a method to estimate the LiFePO4 SOC based on the expansion force curve of the LiFePO4 batteries. Through experimental verific…
1. Author Information and Article Abstract In 2017, the J.R.Dahn research group used the in-situ characterization method to test the volume, stress and thickness changes of the electrodes for pouch cells with different silicon-composite negative ele…
1. Background This paper uses the cell pressure distribution system (BPD1000) to monitor the pressure distribution of different positions of the cell, so as to quickly quantify and evaluate the flatness of different cell sizes. In the existing proce…
1. Author information and article abstract 2022, Yonghong Deng’s group at SUSTech, in collaboration with Prof. Zijian Zheng’s team at the Hong Kong Polytechnic University (first author: Chao Luo, a PhD student at SUSTech), developed a ro…
1. Preface Lithium-ion battery is an electric-heat-force coupling system, which has swelling problems in the actual use process. On the one hand, the SEI film is formed, and the air pressure inside the battery increases, and the thickness of the SEI…
In this paper, the in-situ swelling analyzer (SWE) is used to test the swelling force and the temperature change of the LiFePO4 prismatic cells under different initial preload (60kg/90 kg/120 kg) and different charge and discharge rates of the LiFeP…
1. Preface With the continuous improvement of the endurance requirements of new energy vehicles, battery anode materials are also developing in the direction of high energy density. Although the traditional graphite anode material has mature technol…
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