What should I do if the electric vehicle lithium-ion battery is out of control? How to deal with it?

2022/04/08

  Author :Iflowpower – Portable Power Station Supplier

The prominent subtext to be longer is a lower thermal stability. Dynamic lithium battery thermal out-of-control is caused by the heat rate of the battery is much higher than the heat dissipation rate, and the heat is exuded in time. Section 1: The battery is safe at 80 to 90 ¡ã C during the internal thermal out-of-control phase of the battery, and the temperature increases to 90 to 120 ¡ã C, the SEI film begins to decompose, release heat, and the temperature increases.

However, when the temperature reaches 120 to 130 ¡ã C, the protective layer SEI film is destroyed, the negative electrode and the solvent, the adhesive reaction, the temperature increase, the diaphragm melting. When the temperature continues to 150 ¡ã C, the internal electrolyte begins to decompose, continues to release heat, further heat the battery. Section 2: When the battery drum stage is above 200 ¡ã C, the positive electrode material is decomposed, released a large amount of heat and gas, and continues to heat up.

250-350 ¡ã C, lithium lithium negative electrode begins to react with the electrolyte. Section 3: Battery thermal out-of control, during the reactive process, the electrolyte and the positive electrode reactive reaction and further allow the battery to occur thermal out of control. How to prevent heat loss? In terms of electrical core level, it can be started from the safety improvement of three important components of electrode materials, electrolytes and separators.

For module, battery pack level, it is necessary to design, thermally manage, BMS, and electrical management from battery pack structure. Many foam products are used in structural design and thermal management. The various foam materials in the lithium-ion battery pack not only protect the battery from external impact damage, but the more core function is to regulate the heat management of the battery pack, keep the battery pack's small environment can reach the winter warm summer cool.

San Gogban Norseal with multiple successful applications®Sealing foam and norbond®The adhesive tape is prominent in thermal out-of-control protection, battery pack guiding, etc., which can prevention and control of harsh consequences. Whole packages for cells, modules and power lithium batteries, we supply different levels of thermal out-control protection materials, Norseal®The TRP foam is an elastomeric compression bubble that supplies strongly protected by battery heat, preventing thermal out of control of the battery.

Norseal®FS1000 foam can be used as a hot out of control and thermal insulation material in the box, and the passenger is supplied more escape time when the thermal out of control occurs. The use of lithium-ion batteries in the thermal out-of-control protection battery group is also the fierce. Battery overcharge, battery overheating, mechanical damage is caused by the external cause of battery thermostat.

The power of the summer sun is terrible, electric cars must be a cool work. Since the electric vehicle is driven by the motor, there is no routine maintenance such as oil, three filtration, belt, etc. Maintenance measures such as tire pressure monitoring and keep it clean.

The car should take a good sunscreen, and the high temperature brought by long-term exposure is unfavorable to the vehicle's parts and batteries, such as reducing battery activity. It is best to choose a cool place. Precautions: Precautions for lithium ion batteries 1 Safely use batteries, prevent the occurrence of safety accidents such as electricity, explosion, etc.

2 Call the battery in a good ventilation, heat dissipation environment, to ensure the temperature of the battery does not exceed the temperature of the internal electrochemical reaction, etc. If the battery temperature is found to be too high, you must see the use of batteries to cool down or if necessary, to ensure safety. 3 When charging, use a charging device that is supported with the battery, charge it according to the regulations to prevent the battery from excessive phenomenon.

Once the charge is repeated immediately. 4 To ensure proper use of the battery does not use a sharp or heavy object to impact the battery, can protect the cover outside the battery under conditions that ensure good ventilation, heat dissipation, etc., prevent the external damage of the battery and cause safety acci.

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