What is the difference in safety protection between square lithium ion batteries and round lithium ion batteries

1. The current focus of lithium-ion battery protection can be summarized into two parts: internal and external: external refers to threats caused by external forces such as impact and puncture; internal refers to threats caused by heat dissipation and attenuation. 2. There is no difference between the two types of batteries in terms of vehicle safety protection. In fact, not only square lithium-ion batteries and round lithium-ion batteries, but also soft-pack batteries are fundamentally common in vehicle safety protection. Because the internal composition of the three types of batteries is not much different from square and cylindrical lithium-ion batteries, the biggest difference is that the soft pack battery uses aluminum-plastic composite film as the shell, and the square and cylindrical batteries use metal materials as the shell. 3. Protection method for prismatic lithium-ion battery: When the battery temperature rises abnormally, it can present high resistance, hindering the charging and discharging current of the battery, and ensuring the safe use of the battery. 4. Cylindrical lithium-ion battery protection method: There is PPTC inside the battery core for over-temperature and over-current protection. When the battery cell temperature is too high or the current is too large, the PPTC will become a high resistance state, thereby blocking the battery cell charging and discharging current and preventing the battery from catching fire and exploding. Therefore, when using cylindrical lithium-ion batteries, you must pay attention to temperature, voltage, and current. 5. The protection ideas for round lithium-ion batteries are: ①Ensure the safety inside and outside the battery pack, including accidental collisions and punctures; ②To ensure long battery life and battery aging, it is necessary to monitor the internal and external temperature of the battery. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: How to make the battery safer?