Lithium battery is divided into lithium ion battery and lithium battery. Lithium ion battery is also a common emergency power supply, such as standby power supply, energy storage power supply used in motor homes and outdoor mobile power supply used in recent fires. Due to its advantages of high energy density, high average output voltage, no memory effect, excellent cycling, fast charging speed, long service life, etc., it is also a very popular presence in the lithium battery industry. Recently, a small partner came to inquire about what causes the short circuit of lithium battery? Let's take you to know:

1. Short-circuit caused by impure cathode material, or by placing it too long and drying it incompletely. Failure to remove the transition metal impurities in the cathode slurry will lead to puncture of the diaphragm or promote the formation of lithium dendrite in the cathode, resulting in internal short circuit.

2. The quality of the lithium cell diaphragm is not up to standard, and the lithium ion battery is often charged and discharged with high current during use, and the diaphragm cannot withstand the current charging and discharging process in a short time, resulting in damage inside the cell and short circuit.

3. Furthermore, the lithium-ion battery is not properly maintained, the concept of shallow discharge and shallow charging is not followed, and the battery is often charged without power, and the original charger is not used for charging. The above problems will cause internal damage to the battery and cause short circuit.

4. During the recycling process of lithium ion batteries, due to the low lithium storage capacity of the anode material or the rapid struggle of lithium ions from the anode, too many lithium ions are dissociated on the surface of the anode, which will form dendritic crystals over time. When the dendrite grows to a certain length, it is easy to puncture the diaphragm and cause the battery micro-circuit. Low temperature is also conducive to the growth of lithium dendrites, so low temperature will also cause the micro-circuit phenomenon of lithium ion batteries.

Shenzhen Topband Battery Co., Ltd.，established in 2006, is a wholly-owned subsidiary of Shenzhen Topband Co., Ltd. (002139.SZ). We focus on lithium iron phosphate batteries,with independent research and development in cells and BMS. With the ability to integrate the entire industry chain, we are committed to providing customers with one-stop lithium battery solutions and services. Our quality products are widely used in energy storage and light power.