Why is the electric car lithium-ion battery overheat? Will you explode?

　　Author ：Iflowpower – Portable Power Station Supplier

Why is the electric car lithium ion battery overheat? Will you explode? There are two cases of electric vehicle lithium-ion batteries, one is to discharge heat, the other is charging heat. Electric car batteries will born a lot of heat during charging and use, if it is not evacuated in time, there will be high temperatures and even natural. So what is the reason for the electric car battery? How do I do if the battery is hot? Xiaobian is speaking.

Why is the electric car lithium ion battery overheat? ● Excessive discharge, it is possible that the lithium ion battery capacity is small, and the discharge current is more than 0.5c. ● When the model is low, the battery capacity is small, the working current is large, the voltage will decrease, the capacity is also exhausted, the battery is the most unfavorable battery.

● Lithium-ion battery self-problem, the aging of the battery, the internal resistance, the dryness of the electrolyte, there is a short circuit, etc. ● Electric vehicle lithium-ion battery solution forms sulfate crystals during charge and discharge, precipitated pensions on the lead plate, resulting in increased battery resistance and heat. ● The general charger does not have a pulse function, and there is no negative pulse to eliminate polarization.

This type of charger is usually not constant in the post-charging, so that the electric vehicle lithium-ion battery voltage exceeds the quasi-value, causing a large amount of gas, loss Water, fever. ● The high temperature environment will increase the internal pressure of the battery to make the battery limit valve are automatically opened, and the straight consequence is the water loss of the new battery, and the battery is excessively lost will inevitably lead the battery activity, and the accelerator plate is softened. When charging, the housing fever, the housing drums, deformation, etc.

● Battery aging, the internal resistance, the heat generation of the electrolyte dry, internal short circuit, etc. As used, the battery is added, including discharge and charging, the water molecules in the lithium ion battery gradually lost, resulting in heat generation in the electrochemical reaction; additionally, the battery solution forms sulfate crystallization during charge and discharge, precipitate paste On the plate, it can cause the battery resistance to increase and heat. Is the electric car lithium-ion battery overheating explosion? The most common explosion of the lithium ion battery of the electric vehicle is the mistake during the charging process.

In electronic devices using lithium-ion batteries, there is often a related software to set the amount of electricity to charge, and the charging speed. If an error occurs, the compounds in the lithium-ion battery will be unstable, and a researchers referred to as "thermal out of control", which will cause burning or explosion. The crystallization in the lithium-ion battery will result in a short circuit.

At this time, the battery is dramatically discharged, and a large amount of heat is born, burn the diaphragm. High temperature will analyze the electrolyte into a gas, when the pressure is too large, the battery will explode. If it is extreme, such as: squeezing, thorns, fire, high temperature, etc.

Whether it is a formal battery or an informal battery, it is possible to explode. In the process of use, the highest temperature cannot exceed 60 degrees Celsius. In addition, in low temperature environments, the chemical reaction in the battery will slow down and affect battery performance.

But not exploding. How to deal with electric car lithium-ion battery overheating? 1 In the summer electric car charging Do not place the battery in the sun, you should place it with a cool place, do not overheat the items on the lithium-ion battery, generally no overheating phenomenon. 2 If the electric car battery has been charged for a long time, the red light still shows the unspeakable, at this time, I feel that the battery is very hot, it is very hot, then it should stop sustained charging.

3 Do not mix the lithium-ion battery charger, pay special attention, do not use high-voltage chargers to give low voltage battery. Of course, the fast charging station on the daily street, try not to charge. The original charger is not good, quality problems, etc.

If this happens, we must be cautious, I hope to help everyone!.