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What is the 18650 lithium battery safety valve? Can safety valves prevent explosions? The function of the 18650 safety valve is to avoid danger when the pressure inside the lithium battery reaches a set value, and then the valve is lifted to disconnect the circuit. It's somewhat similar to the principle of a pressure cooker safety valve. The leakage of the safety valve of lithium batteries is mainly due to excessive internal pressure, which is often caused by high charging voltage. For safety reasons, please replace the battery with the same model.

What is the 18650 lithium battery safety valve?

The preparation process of 18650 lithium batteries is already very mature. In addition to greatly improving performance, its safety is also very comprehensive. In order to prevent explosions from the sealed metal casing, 18650 batteries are now equipped with a safety valve at the top, which is a standard feature of every 18650 battery and the most important explosion-proof barrier. When the internal pressure of the lithium battery is too high, its top safety valve will open to exhaust and reduce pressure, avoiding explosion.

However, when the safety valve is opened, the chemical substances leaked from the 18650 lithium battery will react with oxygen in the air under high temperature conditions, and there is still a possibility of fire. In addition, some 18650 lithium batteries now come with built-in protection boards, which have functions such as overcharge, over discharge, and short circuit protection, and have very high safety performance.

At present, the 18650 batteries produced by major battery manufacturers such as Panasonic, Sony, Samsung, etc. are actually very safe, and the usage rate of 18650 lithium batteries is very high. We can use them correctly and avoid battery short circuits, damage, or high temperatures in daily use, without worrying about the battery exploding. We cannot use a single bamboo pole to knock over a boat of people and characterize the safety of 18650 based on individual inferior products.

Can safety valves prevent explosions?

The vast majority of 18650 lithium batteries are packaged in steel shells. Poor quality batteries, due to the lack of protective functions, will experience a sudden increase in internal pressure when overcharged. When exceeded, they will explode. Short circuits, high temperatures, or battery compression, deformation, or even puncture can all cause battery explosions.

If the internal air pressure of a lithium battery increases, the safety valve will burst to release the internal pressure and ensure that the battery will not explode. Generally, cylindrical batteries have a safety valve on the positive electrode.

Legitimate and qualified 18650 lithium batteries have high safety and can be used with confidence. Although manufacturers have used some safety measures to ensure the safety of lithium-ion batteries, we also need to pay special attention when using them. For devices with replaceable batteries, try to use original batteries, and maintain ventilation and heat dissipation when charging. Especially for mobile phones, it is best not to charge them in bed to avoid heat accumulation and lithium battery explosion.

A large capacity power lithium battery safety valve, comprising a valve body, wherein the valve body comprises an upper valve body and a lower valve body, the lower valve body is provided with an exhaust channel, and the upper valve body is a cavity structure; The exhaust channel is connected to the cavity of the upper valve body; The upper end of the cavity of the upper valve body is provided with an upper top that can rotate and connect with the upper valve body, and a lower top is provided at the lower end of the cavity. The upper top and lower top are connected by elastic elements;

The lower top is fixed with a sealing gasket for sealing the exhaust channel; The side wall of the upper valve body is provided with exhaust holes for exhaust; At the same time, the contact position between the valve body and the sealing gasket is set as a circular arc structure, further enhancing the sealing performance and pressure relief stability of the safety valve, and ensuring timely and effective discharge of gas inside the battery even when a large amount of gas is generated inside the battery; At the same time, this safety valve has higher stability and safety, a simple structure, and lower production costs.

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