Energy storage battery manufacturers analyze the common explosion and fire events of lithium batteries!

The reason why lithium batteries explode and catch fire is usually because the heat is accumulated and cannot be dissipated. The heat reaches a certain level and ignites the electrolyte. In the final analysis, energy storage battery manufacturers are generally caused by the following four factors. 1. Internal short circuit: problems in the process or technical structure cause the insertion of the tabs, the margins are too small, the burrs, the barriers are discounted, etc. If the insulation of the tabs is not in place, these problems will easily cause an internal short circuit due to external forces during the production of the final product. 2. External short circuit: The explosion and fire caused by the external short circuit of the battery below 1AH are rare. Generally, there will only be gassification or simply burn the tabs. However, large-capacity batteries or power batteries, and high-density lithium batteries for mobile phones are more likely to explode. Catch fire. In general, it is improper use or the connection between the tabs caused by illegal operation. At the installation site, the battery smokes and burns abnormally; the power battery may also cause heat accumulation effects due to unreasonable structural design, or end users Irregular use of the battery, or short-circuit after the ears touched by artificial shaking. 3. Overcharge blasting: This is a risk at any time, and it is also the situation that the company is most afraid of. No matter how strict the control and control are, it may still happen in accidental circumstances. Energy storage battery manufacturers have two points from the understanding of the situation: a. The user does not use the matching charger as required, or uses inferior quality, the charging and discharging judgment itself is not accurate and other factors, it is difficult not to explode in this situation; b , Or the failure of the protective plate of the finished battery, it may overcharge and cause an explosion and fire. 4. The material of the battery itself is not good enough. Or wrong matching, such as using low-rate batteries in high-power power batteries, excessive heating caused by long-term high-current discharge of low-rate batteries, etc. Based on the above analysis, properly maintain and use lithium batteries to avoid the above situations as much as possible , I have sorted out some methods: 1. Frequent deep charging and discharging: Lithium batteries have almost no memory. When using lithium batteries or lithium battery digital products, many people like to use up the power and then recharge them. People think that this is also a way to activate the battery. In the use of lithium batteries, we call the state of recharging after running out of power as deep charge and discharge. Originally, deep charge and discharge is a very serious misunderstanding of many people when using lithium batteries. Energy storage battery manufacturers have concluded after experiments that the number of deep charge and discharge depends on a specific repair action used when the battery is abnormal. However, frequent deep charge and discharge will cause the battery life to expire prematurely. If these problems are not discovered, then the probability of eventual explosion and fire will be much greater, after all, lithium batteries are flammable. 2. Overcharge and discharge and excessive charging and discharging current: This situation often occurs when the protection board is not properly set up and charging. We often like to charge the device for a while after the battery is fully charged (this method is applicable It is suitable for lead-acid batteries, but not suitable for lithium batteries.), so that your own device can last longer, but what many people don’t know is that long-term overcharging and overdischarging will affect the function of lithium batteries. Severe damage may eventually lead to an explosion and fire, so it is good that the lithium battery is fully charged. If it is always plugged into the charger, a tragedy will happen sooner or later. Although current chargers have a mechanism to stop charging, developing good charging habits is also the best guarantee to avoid danger. 3. When charging and discharging, also pay attention to whether the current of the charger is consistent with the maximum allowable charging current of the lithium battery. Excessive current load can easily cause the internal short circuit of the battery and then damage the lithium ion. The same applies to the charging stop voltage of the charger. Therefore, we should pay attention to whether the charger complies with safety regulations when using the charger. And pay special attention to whether the charger and battery match. 4. Working environment. Lithium batteries are extremely sensitive to temperature. If they are used for a long time below the freezing point, they may have a great impact on battery life. Long-term exposure to an overheated environment will greatly reduce the life of the battery, and severely cause the internal pressure to increase and cause an explosion. Even if there is no explosion, the battery will fail as soon as possible in the excessively high temperature. Most explosions will catch fire. Accidents are caused in a high temperature environment. After experiencing many explosions and fires, most manufacturers of energy storage batteries have now added maintenance devices. In particular, electronic and digital products have added two layers of maintenance or multiple maintenance to avoid this situation as much as possible. However, the correct use of lithium batteries is still very important for users to strengthen their understanding of lithium batteries. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: Correctly compare lead-acid batteries and lithium batteries. Which one is better?