What Is the Necessity of Aging Test for Lithium Ion Battery Pack?

How to quickly judge the aging degree of lithium ion battery pack?

If you have a multimeter, you can test the quality of lithium-ion battery pack in one minute. The method is to find 3 to 5 power resistors with 1 ohm and 10W in series After connection, measure the discharge current on the battery in series, which is generally adjusted to 500 mA. If you want to buy a battery, you can connect the load to the positive and negative poles of the battery, and then measure the voltage drop of the battery, that is, measure the voltage before connecting the resistance After measuring 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.

Why should lithium ion battery pack undergo aging test?

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

Second, after aging test, the active substances in the positive and negative materials can promote the acceleration of some side uses, such as gas production and electrolyte decomposition, so that the electrochemical performance of 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. After formation, the voltage of the cell is unstable, and its measured value will deviate from the actual value. After aging, the cell voltage and internal resistance are more stable, which is convenient to screen batteries with high consistency.

There are various finished battery pack testers for different kinds of battery packs. Acey new energy can supply the testers to meet different requirements.

The battery performance 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 room temperature. After high-temperature aging, potential adverse phenomena of batteries will be exposed: for example, voltage change, thickness change and internal resistance change are comprehensive indicators that directly test the safety and electrochemical performance of these batteries.

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