Comprehensive Analysis of EV Battery Safety Vents
With the popularity and development of new energy vehicles, batteries have become one of the core components of new energy vehicles. The battery safety vents are an essential part of ensuring battery safety. Next, we will discuss the concepts, principles, functions, and applications of EV battery safety vents.
Concept of New-energy Vehicle Battery Safety Vents
New-energy vehicle battery safety vents refer to a safety valve or safety device installed inside the battery pack. It is used to control the pressure and temperature in the battery within a safe range during the charging or discharging process of the battery pack to prevent overcharging and overcharging of the battery. Safety issues such as over-discharge and overheating arise. Its primary function is to achieve efficient, reliable, and safe monitoring and control of the battery pack through air pressure sensors, electronic controls, and sensors to ensure the long-term safety performance and service life of the battery.
Principle of EV Battery Safety Vents
The EV battery safety vents can reduce the internal pressure of the battery and avoid safety accidents such as overcharging, over-discharging, and overheating. The principle is to use pneumatic principles to control the gas pressure inside the battery. When the gas pressure inside the battery exceeds a particular value, the safety vents will automatically open to release the pressure inside the battery, thereby preventing the battery from exploding. At the same time, the safety vents can also detect the internal temperature of the battery. When the temperature is abnormally high, it can automatically open the safety vents to ensure the safety of the battery.
Function of EV Battery Safety Vents
The battery safety vent is a device used to ensure battery safety. It can promptly detect abnormal conditions inside the battery and automatically disconnect the battery circuit in an emergency to avoid battery explosion accidents. The battery safety vents are one of the core components of the battery management system and play an essential role in extending battery life, improving battery stability, and ensuring safe battery use.
Application of EV Battery Ventings
Battery safety vents can be used in a variety of new-energy vehicle batteries, mainly three types: polymer lithium-ion batteries, lithium cobalt oxide batteries, and lithium iron phosphate batteries.
The safety vents of polymer lithium-ion batteries are generally made of high-temperature-resistant and corrosion-resistant alloy materials, which can effectively prevent battery overheating, explosion, etc.
The safety vents of lithium cobalt oxide batteries generally have a sensitive response time and high output power. They can quickly respond to battery overcharge, over-discharge, over-current, and short circuit to ensure the safety of the battery.
In Conclusion
Innovations in battery structure are flourishing in this era, driving continuous iteration of battery structural parts design. At present, there are many power battery sizes, shapes, capacities, voltage specifications, and models on the market. For vehicle companies, it increases the difficulty of matching and purchasing. For battery manufacturers, it hinders large-scale standardized production of power batteries. And it is not conducive to cost reduction of power batteries. Therefore, choosing a manufacturing company that can match battery needs has become a lot of work.