Briefly describe the repair of lithium batteries by means of core changing

With the popularity of digital products, the application of lithium batteries (including lithium-ion batteries and lithium polymer batteries ) has become more widespread. In general, the life of a lithium battery has a charging cycle of 300 to 500 times. After a certain number of times, the capacity is significantly reduced. At this time, the battery is replaced. However, because lithium battery designs are often not common to each other, the original batteries are expensive, and some varieties are difficult to purchase. Is there a way to reuse old batteries? For those who love hands-on electronics, the answer is yes. I have dissected a number of different types of lithium batteries, the structure is basically the same, are composed of the shell, the protection circuit, the lithium battery (usually 18650 lithium battery ) three parts.

This is a dying lithium battery. In fact, its internal lithium battery is close to the life limit, so we renew the lithium battery by replacing the internal lithium battery. The specific operation is as following: Use a utility knife to cut along the seam of the battery casing. If the barbed buckle is not treated first, the other seams are opened and the outer casing with the barb is pinched to loosen the buckle. After opening the casing, remove the lithium battery core with a soldering iron, and then use the sample to the electronic market to purchase the lithium battery with the corresponding specifications and quantity. Then, the newly purchased lithium battery core is welded to the original battery as it is, and then the molten metal melt is applied on the inside of the battery joint, and then the outer casing is quickly closed, aligned and pressed, and the hot melt adhesive is solidified and then used. The tool trims the hot melt adhesive that overflows from the seam, and the repair of the lithium battery is completed. The price of a typical lithium battery varies from a few Yuan to a dozen Yuan. The cost of repairing a lithium battery is much lower than the price of purchasing a compatible lithium battery. Therefore, we should not throw away the waste lithium battery. It will pollute the environment. We may wish to pick up the electric soldering iron to enjoy the fun.

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