大家好，18650電池爆炸一直是大家擔憂的問題，經過30年的發(fā)展，18650電池制備工藝已經非常成熟，除了性能有了極大提升之外，其安全性也非常完善。但是你們要知道很多實際上劣質電池和不合格電池才是這些事件的罪魁禍首。很多朋友認為那個金屬殼的圓柱電芯18650鋰離子電池爆炸的威力超乎你的想象。其實這種金屬殼的鋰離子18650電芯在正極那頭有蓋帽，蓋帽都有泄氣閥裝置，沒等里面的氣體達到爆炸臨界值的時候，就已經泄氣了，安全閥是每一顆18650鋰離子電池的標配，也是最重要的一道防爆屏障。。當然這個是品牌的哈。18650鋰離子電池爆炸的原因是里面的電解液和微量的水分短時間受高溫高壓的作用產生膨脹后爆炸的，有了泄氣閥，則這種條件不會產生。除非內部短路，能形成爆炸條件。

此前發(fā)生的移動電源爆炸事件，全部是因為無良廠家為節(jié)省成本使用不合格的劣質18650電池，甚至是二手廢電引起的。目前各大品牌電池廠商生產的18650鋰離子電池其實是非常安全的，而且18650電池使用率非常高，我們在日常使用時能夠做到正確的使用以及避免電池短路，受損或溫度過高，完全不用擔心電池會爆炸。我們不能一竹竿打翻一船人，以個別劣質產品來定性18650鋰離子電池的安全性。

我在東莞的鴻偉能公司做技術員，有時候也要測試鋰電池的綜合機械性能如何，如果測試的電池通過率達到標準就可以出貨。做這些實驗有一定的危險性，因為像重物錘擊這類的實驗，個別電池會爆炸，把鋼殼完全炸開，不是把蓋子頂開那種，是把鋼殼炸成一個片。威力相當大，這種實驗是在鐵箱里面進行的，電池一爆炸，整個鐵柜子都會震動并且搖晃一下，實驗的柜子起碼有百多斤，大家可想而知爆炸的威力有多大。

18650鋰離子電池爆炸的原因還是蠻多的：

1.電池材料對鋰電池的安全性影響，因為電池材料一般都具有熱活性，當外部溫度或者電池溫度持續(xù)升高時，鋰電池部就會進行許多熱反應，如果溫度不斷上升，18650鋰離子電池就有爆炸的可能性。所以鋰電池正負極材料的選擇對于電池安全性能具有重要影響。

2.生產中各個操作環(huán)節(jié)的品質控制也是影響電池安全性能的重要因素，正負極容量配比、漿料均勻度控制、正負極片毛刺、電芯卷繞時有短路為檢測出來做到成品后電池電路等等。我們在用鋰電池的時候，如果有過充或者外短路，內短路導致鋰電池發(fā)燙，電池內部快速化學反應膨脹引起爆炸。

講解了這么多，我們來總結一下:其實對于鋰電池來講，會出現(xiàn)爆炸原因也是可以理解的，畢竟在以前的時候，對于這種穩(wěn)定性的把握不會那么厲害，但是18650作為一種性能對比性非常高的鋰電池，其應用肯定會越來越廣泛的，畢竟目前對于這種不可或缺的電池來講，18650鋰電池是最好的一個選擇。

Everyone is good, 18650 battery explosion has been a concern for everyone, after 30 years of development, 18650 battery preparation technology has been very mature, in addition to the performance has been greatly improved, its safety is also very perfect. But you need to know that many of them are actually inferior batteries and substandard batteries. Many friends think that the cylindrical shell of the metal shell, the 18650 lithium ion battery explode more powerful than you think. In fact, the lithium ion 18650 core of this metal shell has a cap at the front of the positive pole, and the cap has the deflated valve device. When the gas inside the explosion reaches the critical value of the explosion, it is already deflated. The safety valve is the mark of each 18650 lithium ion battery, and it is also the most important explosion protection barrier. Of course, this is the brand of Kazakhstan. 18650 the reason for the explosion of lithium ion batteries is that the electrolyte and the small amount of water in a short time are inflated by the effect of high temperature and high pressure, and there is a deflation valve, and this condition will not be produced. The explosion condition can be formed unless the internal short circuit is short circuited.

The previous explosion of the mobile power supply was caused by the unqualified manufacturers of poor quality 18650 batteries, even secondhand waste electricity, to save cost. At present, 18650 lithium ion batteries produced by major brand battery manufacturers are actually very safe, and 18650 batteries are very high, we can use it correctly in daily use and avoid battery short circuit, damage or high temperature, without fear that the battery will explode. We can not overturn a boat man by a bamboo pole to identify the safety of 18650 lithium-ion batteries with individual inferior products.

I am a technician in Dongguan's Hongwei energy company, and sometimes I have to test the comprehensive mechanical performance of the lithium battery. If the test battery passes the standard, it can be shipped. It is dangerous to do these experiments because, like heavy hammer experiments, individual batteries will explode, and the steel shells are completely blown away, not the top of the lid, and the steel shell is blown into a piece. It was quite powerful. The experiment was carried out in an iron box. As soon as the battery exploded, the whole iron cabinet shook and shook, and the experimental cabinet had more than a hundred kilograms, and you could imagine how powerful the explosion was.

18650 the reasons for the explosion of lithium ion batteries are quite numerous.

1. battery material affects the safety of lithium batteries because the battery materials generally have thermal activity. When the external temperature or the battery temperature continues to rise, the lithium battery will do a lot of thermal reactions. If the temperature rises, the 18650 lithium ion battery has the possibility of explosion. Therefore, the choice of anode and cathode materials for lithium batteries has an important influence on the safety performance of batteries.

2. the quality control of each operation in the production is also an important factor affecting the battery safety performance. The positive and negative capacity ratio, the size uniformity control, the positive and negative electrode burr, the short circuit in the coil winding are detected to achieve the battery circuit after the finished product. When we use lithium battery, if there are overcharging or short circuiting, the internal short circuit will cause the lithium battery to burn, and the rapid chemical reaction inside the battery will cause explosion.

Explain so much, we sum up: in fact, for the lithium battery, there will be the cause of the explosion is understandable, after all the time before, for the stability of the grasp of not so serious, but the 18650 as a performance comparison of very high lithium battery, its application will be more and more widely, After all, the 18650 lithium battery is the best choice for such an indispensable battery.