Causes of polymer lithium ion battery pack expansion and roller maintenance technology

2022/04/08

  Author :Iflowpower – Portable Power Station Supplier

The problem of the original lithium ion battery pack expanded 1. Lithium ion battery pack manufacturing level is that the electrode coating is not average, the processing process is rough. 2.

A large amount of heat, resulting in electrolyte analysis and gasification, lithium ion battery expansion. 3. In addition, when the polymer lithium ion battery leads forward, the expansion is expanded, as the air is electrically conductive to some extent, so the long release time is equivalent to the pen direct contact of the battery positive and negative electrode, and performs a chronic short circuit.

4. Lithium-ion battery charger quality difference: The charger uses inferior plate, refurbished or inferior parts, heating, parameter drift is not accurate, so that the charging limit is out of control, resulting in an internal gas inside the lithium ion battery, causing the battery housing to deform, charging Crack and even explode. 5.

Too long charging time. If excessive charging can cause a large amount of gas flushing plate, the internal active material in which the lithium ion battery pack is detached, shorten battery life, so that the battery is exhausted, affecting the electrolyte analysis, so that the battery temperature is raised, so that the battery is overflow! Polymer lithium ion battery pack roller maintenance technology 1. Preparation work to find a ventilated place, prepare polymer lithium-ion battery, scissors, clip, toothpick, 705 translucent silicone rubber, translucent tape, syringe, injection needle and a plastic tube (Not least).

II. The air pump is ready to connect the syringe to the infusion needle to fix the needle in the sealing of the lithium ion battery pack, and then fix the needle with the tape, apply a small amount of 705 silicone rubber near the needle to alert. 3.

The gas extracts the syringe out of the gas in the battery, pumps a complete pipe, clamping the needle of the needle with the needle, separate the syringe and the needle, discharge the gas (although the gas in the battery is not toxic, but the taste is not Ok, so find a ventilated place), then connect the syringe to the needle, then operate over again. IV. Sealed passes multiple operations, the packaging aluminum film of the battery will gradually tighten and stick to the battery body, and the polymer lithium ion battery pack will become very hard.

When the gas cannot be extracted, after the inside of the battery is close to the vacuum state, the plastic pipe behind the needle is sandwiched with a clip, and a small piece of translucent tape (1 cm square) is scratched with a scissors, and the needle is pressed, and the needle is pressed. V. Quality test is very small, with silicone rubber and translucent tape seal, the gas will no longer enter the battery.

After several hours of silicone rubber curing, lithium ion battery packs, lithium-ion battery packs are charged and discharged under small current. If there is no more expansion problem, treatment will be completed. If there is still a gas, you can follow the above process again, and operate again, if it still cannot handle, the battery has been scrapped.

I bought a dozen low-priced polymer lithium-ion batteries on the Internet. After the above solution, it has returned to normal use, the effect is very good.

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