Industry News

At present, the safety standards of lithium ion batteries in the industry mainly include international standards (such as IEC standards), national or regional standards (such as JIS, CB, EN standards, etc.) and industry standards (such as UL, IEEE, SJ, QB standards, etc.).

Batteries have a safe voltage range to use, the highest and lowest voltage is generally known as the charge and discharge termination voltage or cut-off voltage, when the actual working voltage of the battery for a long time is lower than the discharge termination voltage or a long time is higher than the charging termination voltage, irreversible damage will occur inside the battery, serious damage to the battery, resulting in performance decline, commonly known as battery attenuation, The performance of battery attenuation is that the internal resistance of the battery increases, the capacity decreases and so on. Therefore, there is generally a small PCB board inside the lithium-ion battery, which is packaged together with the battery, as shown in the figure below. The main function is to protect the battery.

The energy storage market, especially the lithium-ion battery energy storage market, is considered to have a broad market space and diverse usage scenarios. Lithium-ion battery energy storage technology has the advantages of high efficiency, flexibility of use, fast response and speed, and gradually occupies an increasingly important position in the electric energy storage market.