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The first is to make the electrolyte soak better, which is conducive to the stability of the performance of the lithium-ion battery pack;

Second, the aging of the active substances in the positive and negative electrode materials can promote the acceleration of some side uses, such as gas production, electrolyte decomposition, etc., so that the electrochemical performance of the lithium ion battery pack can quickly reach stability;

The third is to screen the consistency of lithium-ion battery pack after aging for a period of time. The voltage of the cell after formation is unstable, and its measured value will deviate from the actual value. The voltage and internal resistance of the cell after aging are more stable, which is convenient for screening the cells with high consistency.

The performance of the battery after high temperature aging is more stable. Most lithium ion battery manufacturers adopt the high temperature aging operation mode in the production process, aging at 45~50 ℃ for 1~3 days, and then put it aside at normal temperature. After high temperature aging, the potential adverse phenomena of the battery will be exposed: for example, voltage change, thickness change, and internal resistance change are all the comprehensive indicators that directly test the safety and electrochemical performance of this batch of batteries.

Temperature has a great influence on the cycle aging rate of lithium ion battery pack. At lower temperature, the cycle life is reduced due to strengthened lithium plating; High temperature will shorten battery life due to Arrhenius-driven aging reaction; Therefore, the lithium ion battery pack can obtain the best cycle life only at the appropriate temperature.

If you have a multimeter, you can test the quality of the lithium-ion battery pack in one minute. The method is to find 3 to 5 1 ohm power resistors with a power of 10W in series. After connecting them, connect them to the battery to measure the battery discharge current, which is generally adjusted to 500 mA. If you want to buy a battery, you can connect this load to the positive and negative poles of the battery, and then measure the voltage drop of the battery, That is to say, measure the voltage before connecting the resistance. Measure the voltage after connecting the load. The greater the difference between the two voltage values, the greater the battery capacity and the stronger the load carrying capacity.

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