Unveil the veil of the cause of the burning of lithium ion battery explosion

2022/04/08

  Author :Iflowpower – Portable Power Station Supplier

I. Battery combustion, explosion, according to the results of the on-site analysis, the cause of the battery, personal understanding, there are several points: 1, internal short circuit (mostly soft bag large monomer): structural or process defects lead to the ears interpolation, diaphragm Excessive package, burrs, diaphragm discount, etc. In-pointer interpolation tends to appear in the thick cell and innerly connected structures, the extreme ear is not in place, and the use of protective plates or use processes in subsequent finished products can cause internal acute short circuits to have a combustion or explosion (internal short circuit: this person is I have a deep understanding, I also scrapped in 2K more than the kind of battery.

It actually belongs to the abnormal nature of the design defects. It is: internal acute short circuit), but now this situation is almost very small, unless the external force factor. 2, external short circuit: 1AH below the battery of the battery, the burning of the explosion is uncommon, usually a bulging or simply blows the extreme ear, and personal analysis is the power lithium battery or a large-capacity mobile phone battery.

combustion. This involves the use of improper metal outlets when using improper metal outer box, there is an abnormality of battery smoke in the installation site; the power lithium battery is also common structure fixed measures (considerations for no circumference), and use the process battery group in the user. Causes the external insulation protective film of the battery or the cable skin damage, eventually leading to short circuit combustion.

3, overcharge explosion: This is the most dangerous, but also the company's most afraid, but still occasionally. From understanding, there are two points: A. Users do not use the matching charger as required to destroy the protection line and the user often charge is not limited.

This situation is not fried; B, battery or group Unreasonable and the protective board fails, in this case, a mess is also fried . single battery. 4, more common, integrated: Structural design considering the importance and user use of specifications to prevent product combustion or explosion, I believe that major battery pack manufacturers have a very reasonable improvement Measures, personal thinking that a safer material is the king of lithium-electric safety.

Second, the battery combustion, explosion, according to the results of on-site analysis, involving improper use, personal understanding: 1, frequent depth charge and discharge: Lithium-ion battery has almost no memory, many friends are using lithium tram or lithium digital products I like to use the power to be used at a little less (protective board protection) and then charge, and in many people's eyes, this is also a way of activating the battery. In the use of lithium-ion batteries, we use the capacity to charge again. The situation is called depth charge and discharge.

In fact, deep charge and discharge is a major misunderstanding in using lithium-ion batteries. Scientists have drawn through experiments, and the number of depth charge and discharge is constant and the battery life is proportional to the battery life. Discharge can cause battery life to end too early.

The lithium-ion battery ended over a long time to use life is very easy to cause battery bulging, which causes an explosion. 2, over charge and charge and discharge current are too large: this situation often occurs when the protection board is unreasonable and charging, and we often like to charge the power of the equipment and make your own equipment. The anti-time is longer, but many people don't understand that long-term overcharge and overplay will have serious damage and damage to lithium-ion battery performance, which will cause extreme conditions such as explosions, so battery electricity It's full, I'm inserted on the charger, sooner or later, it will make tragedy.

At the same time, we also need to charge the current and general current load of the electrical appliance when charge and discharge. Excessive current load is extremely easy to cause internal short circuit in the battery, which destroys lithium ions, triggered circuit safety hazards, similar, and charging The type of charger voltage, the truth is also the same. So we should also pay attention to the charger is qualified when using the charger.

However, after many accidents have been experienced, the manufacturers have finally have actions, and have added dual protection or multiple protection for most manufacturers, especially electronic digital products, and try to prevent this situation. What happened, however, the strengthening of users themselves, still is still very important. Lithium-ion batteries are extremely sensitive to temperature, if used for long periods of freezing points, there may be great impact on battery life and harm.

In the long-term overheating environment, it will significantly reduce the life of the battery. It is severely increasingly caused by internal pressure. Even if there is no explosion, the battery will quickly scrapped in high heat, feeling some cases due to pool explosion Most of the reasons are caused by high temperatures in its working environment.

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