Why does the battery car lithium ion battery explode?

著者：Iflowpower – Fornitur Portable Power Station

At present, more and more battery bods on the market are equipped with lithium-ion batteries. Because of their light, the renewal is long, and the welcome is popular. However, it has a fatal disadvantage, as long as there is a monomer battery damage to affect the operation of the entire battery pack.

In recent years, more and more accidents caused by lithium-ion battery explosions. So what is caused? What is the battery car lithium-ion battery? For detailed reason, once found, please stay away now! Lithium-ion battery battery inside and outside the short circuit may cause improper operation, or misuse, due to external short circuit, battery discharge current is large, will cause heat of the battery. High temperatures will cause the diaphragm inside the battery or completely destroyed, causing internal short circuits, and thus exploding.

What is the battery car lithium-ion battery? For detailed reason, once found, please stay away now! Internal short circuit This is due to the electrical current discharge, a large amount of heat, burning the diaphragm, resulting in a larger short circuit. This makes a high temperature in such a battery so that the electrolyte is decomposed into a gas, causing an internal pressure too large. When the outer casing of the battery cannot withstand this pressure, the battery will explode.

Water content is too high in water, and the electrolytic solution in the battery can be produced. When charging, lithium oxide can be generated to make the capacity of the battery, easy to make the battery to generate a gas. The moisture decomposition voltage is low, it is easy to decompose the generating gas when charging.

When this series of generated gases increase the internal pressure of the battery, the battery core will explode when the outer casing of the battery cannot be affected. What is the battery car lithium-ion battery? For detailed reason, once found, please stay away now! Insufficient negative electrode capacity When the negative electrode portion of the positive electrode portion is insufficient, or when there is no capacity at all. The part or all of the lithium that appears during charging cannot be inserted into the interlayer structure of the negative electrode graphite, and the surface of the negative electrode is analyzed to form a protruding delegated crystal.

When charging next time, this protrusions are more likely to cause precipitation of lithium. After dozens to hundreds of cycles of circulation, the dendrites will grow up, and finally thorns the diaphragm paper, so that short-circuit occurred inside. What is the battery car lithium-ion battery? For detailed reason, once found, please stay away now! The battery is dramatically discharged, there is a large amount of heat, burn the diaphragm, causing a larger short circuit.

High temperature will break the electrolyte into gas, negative carbon and diaphragm paper, resulting in excessive internal pressure. When the outer casing of the battery cannot withstand this pressure, the battery will explode. Stacking the paper, first, during laser welding, heat is conducted on the census ear, so that the positive end temperature is high.

If the upper tape is not separated from the positive ear and the diaphragm, the hot positive electrode ears will cause the diaphragm paper to burn or shrink, causing internal short circuits, and forming an explosion. What is the battery car lithium-ion battery? For detailed reason, once found, please stay away now! The internal structure of the lithium ion battery is second, and when the negative ear is welded, heat is conducted to the negative ear. If the high temperature film is not posted, the heat on the negative ear will burn the diaphragm, causing internal short circuit to form an explosion.

What is the battery car lithium-ion battery? For detailed reason, once found, please stay away now! Further, when the bottom aluminum nickel composite belt is soldered, there will be a large amount of heat in the bottom shell wall, and the bottom of the pole core is conducted. If the high temperature adhesive paper is not fully enclosed, the diaphragm will burn the diaphragm, causing internal short circuit to form an explosion. Summary: To prevent lithium-ion battery explosions, it has to be fundamentally solved.

1. Reasonable charging time. The charging time should not be too long, the electric bicycle is generally controlled within 8 hours.

Charging is best carried out during the day. 2. Use the original charger, do not mix the charger, or purchase inferior chargers.

3. Be sure to stay away from flammable items when charging, and place the charger in a place where it is easily dissipated. 4.

Do not pull the wire to charge, charge the regular electric vehicle charging. .