NEWS

Introduction to Cycling Performance Testing   Battery cycling performance testing usually involves cycling a battery under specific charging and discharging conditions several times to simulate the working conditions of the battery in actual use. The purpose of the test is to monitor the degradation of the battery’s capacity during the cycling, and thus assess its cycle life and health status. Charging and discharging cycling can be used to test the battery’s charge/discharge capacity, coulombic efficiency, capacity retention rate and other performance parameters. Commonly used modes for battery charging and discharging testing in the laboratory include constant current charge/discharge (CC), constant voltage charge/discharge (CV), constant current and constant voltage charging (CC-CV),

IEC 60086-4 IEC 60086-4 Standard Overview IEC 60086-4 is a standard established by the International Electrotechnical Commission (IEC), officially titled “Primary batteries – Part 4: Safety requirements for lithium batteries.” This standard outlines the safety testing and requirements for primary lithium batteries to ensure their safe operation during both intended use and foreseeable misuse scenarios. It is applicable to both standardized and non-standardized primary lithium batteries and covers aspects such as battery design, quality planning, sampling, testing, and safety warnings. The IEC 60086-4:2019 edition was published on April 25, 2019, replacing the previous 2014 edition. This updated version includes several technical revisions, such as: Modifications to explosion criteria. Addition of

The impact of battery performance on the EV industry   Battery performance is at the heart of the electric vehicle (EV) industry, directly influencing the driving range, charging time, safety, and overall user experience of vehicles. Efficient batteries can provide a longer driving range, reduce the frequency of charging, and thus alleviate consumers’ range anxiety. The development of fast-charging technology relies on battery performance, which can significantly reduce the time required for charging and enhance user convenience. Moreover, battery safety is a key factor in public acceptance of EVs; the quality of battery performance is directly related to the vehicle’s safety record and brand image. The reliability and durability of

During the charge and discharge process of lithium-ion batteries, multiple electrochemical reaction processes occur, which affect the structural morphology of the electrode materials and the performance of the battery. For instance, the specific capacity and discharge platform of the electrode materials determine the energy density of the battery, while the impedance of the materials or the battery itself determines the ion diffusion process and the power density of the battery. Common electrochemical testing techniques such as cyclic voltammetry, electrochemical impedance, and charge-discharge testing are used to study the electrochemical reaction processes and the cycling performance of electrochemical energy storage devices like lithium-ion batteries.   Cyclic  voltammetry (CV)   The principle