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防爆锂离子电池防爆技术有什么?
Time:2022-10-26 18:35:08        Hits:【 】second

锂离子电池刚商用之初,经常看到有有关锂离子电池爆炸的事故报道,经过多年的发展,现在相对来说有关锂离子电池爆炸的报道变少了,这重要是由于锂离子电池技术的进步发展带来的好处。那么防爆锂离子电池防爆技术有什么呢?



要防范锂离子电池起火爆破,首先便是电池的质量管控。当时的电池体系完全能够经过单体电池中的资料改性和电解液添加剂,以及优良的电池PACK工艺和高效的电池管理体系来最大限度地下降电池起火的可能性。特别是一些高端的电动汽车,因为选用了多种手段保证电池的稳定运行,极少有电池起火事端。



其次便是锂离子电池的正确运用以及不要超寿数运用。在技能手段上,当时首要是单体电池中各个组成部分的新资料的开发及电池PACK工艺的改进。在电池PACK工艺中规划热量均衡体系以保证电堆的全体温度均匀,不至于部分过热。



1、防爆技能,锂离子电池已经成为可携式电子产品的首选电池,这种电池容量密度高、价格具竞争力,预计未来几年仍将是市场干流。可是锂离子电池却一向潜藏着爆破的风险,因为运用愈来愈广,爆破事件也就层出不穷。现在防爆线路及防爆电芯技能都已老练,爆破事件应该能够愈来愈少。

防爆技能是一种新式的电池产品,选用高安全系数资料制造,有效遏制电池爆破的安全电池。防爆锂离子电池组的安全特性是其最大的特点。为了保证在锂离子电池的安全性,一般咱们会在电池壳上规划一个防爆阀,在压力过高时能够及时被破坏,释放电池内部的压力,防止热失控中锂离子电池组出现爆破。



因为对锂离子电池的不恰当运用,当电池因为过冲或呈现其他故障时,其内部会因为化学反应大量产气,导致电池内压迅速增大,出现爆破事端。因此为了防止此类风险出现,电池一般都设置有防爆设备。



2、防爆办法,锂离子电池充电时一定要设定充电电压上限和放电电压下限,理想值分别为4.2V和2.4V,才能够同时兼顾到寿数、容量和安全性;别的电流上限也非常有必要。最好的方法是有电池维护线路板的规划,虽然会新增锂离子电池的制造本钱,但有关锂离子电池的安全运用是必要的,一切正规的锂离子电池生产厂家的产品都免不了这一规划。



对锂离子电池的维护要包括:充电电压上限、放电电压下限、及电流上限三项。一般锂离子电池组内,除了锂离子电池芯外,都会有一片维护板,这片维护板首要便是供应这三项维护。但维护板的这三项维护显然是不行的,全球锂离子电池爆破事件还是频传,要保证电池体系的安全性,必须对电池爆破的原因进行更细心的剖析。



以上便是锂离子电池怎么防爆以及锂离子电池的防爆技能和防爆办法。日常生活中只需咱们大家注意,锂离子电池就不会在咱们的手中成为按时炸弹。


At the beginning of the commercial use of lithium-ion batteries, we often see reports of accidents related to the explosion of lithium-ion batteries. After years of development, there are fewer reports about the explosion of lithium-ion batteries. This is mainly due to the benefits brought by the progress and development of lithium-ion battery technology. What is the explosion-proof technology of explosion-proof lithium ion battery?


To prevent lithium-ion battery from fire and explosion, the first thing is battery quality control. The battery system at that time was able to reduce the possibility of battery fire to the greatest extent through the data modification and electrolyte additives in the single battery, as well as the excellent battery PACK process and efficient battery management system. Especially for some high-end electric vehicles, because a variety of means are used to ensure the stable operation of the battery, there are few battery fires.


The second is the correct use of lithium-ion batteries and do not use them for too long. In terms of skills and means, the development of new materials for each component of single battery and the improvement of battery PACK process were the most important. In the battery PACK process, the heat balance system is planned to ensure that the entire temperature of the stack is uniform, and no part of the stack is overheated.



1. Explosion proof technology, lithium ion battery has become the preferred battery for portable electronic products, which has high capacity density and competitive price, and is expected to remain the mainstream of the market in the next few years. However, lithium ion batteries have always hidden the risk of explosion, because the more widely used, the explosion events will emerge in endlessly. Now the explosion-proof circuit and explosion-proof electric core skills are sophisticated, and blasting events should be less and less.



Explosion proof technology is a new type of battery product, which is made of materials with high safety factor and can effectively contain battery explosion. The safety feature of explosion-proof lithium ion battery pack is its biggest feature. To ensure the safety of the lithium-ion battery, we usually plan an explosion-proof valve on the battery shell, which can be damaged in time when the pressure is too high, release the pressure inside the battery, and prevent the explosion of the lithium-ion battery pack in case of thermal runaway.



Due to improper use of lithium-ion battery, when the battery suffers from overshoot or other faults, a large amount of gas will be produced inside the battery due to chemical reaction, resulting in rapid increase of internal pressure of the battery and explosion. Therefore, in order to prevent such risks, batteries are generally equipped with explosion-proof equipment.


2. Explosion proof method: when charging the lithium ion battery, the upper limit of charging voltage and the lower limit of discharge voltage must be set. The ideal values are 4.2V and 2.4V respectively, so that the life, capacity and safety can be considered at the same time; Other current limits are also necessary. The best way is to plan the battery maintenance circuit board. Although the manufacturing cost of lithium ion batteries will be increased, the safe use of lithium ion batteries is necessary. All the products of regular lithium ion battery manufacturers cannot avoid this plan.


The maintenance of lithium ion battery shall include: upper limit of charging voltage, lower limit of discharge voltage and upper limit of current. In general, there is a maintenance board in a lithium-ion battery pack, except for the lithium-ion battery cell. This maintenance board is mainly used to supply these three maintenance items. However, these three maintenance of the maintenance board are obviously not feasible. The global lithium ion battery explosion incidents are still frequent. To ensure the safety of the battery system, we must analyze the causes of battery explosion more carefully.


The above is how to prevent explosion of lithium ion batteries, as well as the explosion-proof skills and methods of lithium ion batteries. As long as we all pay attention in daily life, lithium ion batteries will not become time bombs in our hands.


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