Interpretation of electric vehicle lithium ion battery charging explosion cause

2022/04/08

  Author :Iflowpower – Portable Power Station Supplier

Interpretation of a lithium-ion battery charging explosion causes 1. The lithium ion battery negative capacity does not apply the negative electrode portion of the lithium ion battery positive electrode portion, and the lithium atom present during charging is unable to insert into the interlayer layout of negative electrode graphite. Analysis of the appearance of the negative electrode to form a crystallization.

In the lithium ion battery, the crystallization will result in a short circuit. At this time, the battery core is dramatically discharged, which will present a lot of heat, and the burning is broken. High temperatures will analyze the electrolytic solution into gas, when the pressure is too large, the battery will explode.

Second, when the moisture content is too high, the moisture can be reverberated with lithium, and the lithium oxide is generated, the capacity loss of the battery is easily charged, and the electrical core is filled with generating gas. The hydrolysis voltage is low. It is easy to analyze the generated gas.

When this series of generated gas increases the internal pressure of the battery, the battery core will explode when the outer casing of the battery cannot be suffered. Third, the internal temperature of the internal lithium battery is short-circuited, which exhibits a large amount of heat, burning bad, causing a larger short-circuit phenomenon, which will analyze the electrolyte into gas, the internal pressure is too large, and the lithium battery will explode. Fourth, when the lithium-ion battery is overchalting the lithium battery, the lithium of the positive electrode will change the layout of the positive electrode, and the lithium that is released is easily inserted into the negative electrode, and it is easy to cause lithium, and, When the voltage reaches 4.

5V or more, the electrolyte will analyze a large amount of gas. The above are probably caused by explosion. 5.

External short-circuit external short circuit is probably caused by the positive and negative pole, due to external short circuit, electric vehicle lithium-ion battery discharge current is large, which will cause the battery to fever, high temperatures will cause the interior of the battery to shrink or completely bad bad , Cause internal short circuit, thus exploding. The reason why the electric vehicle is fired, and the foundation is caused by the thermal loss of lithium ion battery. The energy density of lithium ion battery is large, small in size, light weight, is unable to compare with lead-acid batteries.

Since the advantages of the energy density of lithium-ion batteries are not pursued, the security problem is also expected. Electric vehicle lithium-ion battery charging guide ● inevitably use adapted lithium-ion battery chargers to charge, first insert the charger output plug to insert the battery charging socket, then insert the charger plug into the market, investigation indicator, charge charging identification. If the charger is lost, it may be damaged, please find the corresponding dealer purchase.

Do not use lead-acid charger or other form of charger to hold charging. ● High temperature weather is not charging in the sun, can not be charged after driving, this is especially paying, remember that the electric car cannot be charged under the spicy sun, and it will not be able to put the battery in the sun. Similarly, whether it is usually, it is far from the open fire and high temperature heat.

● For the first time to charge the electric vehicle lithium-ion battery, the first time charging is best to hold a slight time, generally in 8-12 hours. ● In the use of the process, in accordance with the actual environment, you usually use the frequency of electric vehicles and the mileage of the mileage to prepare the charging time and frequency of the electric vehicle lithium-ion battery. ● To organize the electric vehicle lithium-ion battery, it is not appropriate to discharge, and it is necessary to prevent often complete discharge.

Over-discharge will give the battery to bring the effect of robustness, it is exported to a large current, or the impact of repeating over-placing batteries.

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