6LR61 alkaline battery.18650 lithium battery welding method, lithium battery processing and welding technology

18650 lithium battery welding method, lithium battery processing and welding technology. The reasonable selection of welding methods and processes during the manufacturing process of power 18650 lithium batteries will directly affect the cost, quality, safety and consistency of the battery. Laser welding is used for the welding of lithium batteries.

18650 lithium battery welding method, lithium battery processing and welding technology. The reasonable selection of welding methods and processes during the manufacturing process of power 18650 lithium batteries will directly affect the cost, quality, safety and consistency of the battery. Laser welding is used for welding lithium batteries. Compared with traditional welding methods, laser welding process level is higher High, the benefits are considerable, and safety issues are also better solved.

18650 lithium battery welding method

We know that the outer shell of the 18650 lithium battery is a steel shell. Without a dedicated battery spot welder, it is difficult to weld with an electric soldering iron. Of course, there are also powerful battery fluxes that can be used to easily solder 18650 batteries with an ordinary soldering iron. However, this powerful flux is corrosive, not only corroding the battery casing and positive electrode, but also corroding the soldering iron tip. The welding method of 18650 lithium battery is as follows:

1. First use a knife or file to scrape the area to be welded clean;

2. Since the material of the positive electrode is difficult to tin, it is best to grind it a little;

3. In order to prevent high temperature from damaging the 18650 lithium battery, wrap the battery with a damp cloth;

4. Hold the soldering wire against the battery with one hand, and solder it with a soldering iron of sufficient temperature with the other hand to tin the positive electrode of the battery.

18650 lithium battery repair method

1. Take out your 18650 lithium battery after all use, and use temperature treatment. The battery will greatly shorten the use time when the temperature is unstable, because the battery has no power and a considerable part of the lithium ions already have memory cells. In this way, part of the memory power can be discharged. When winter comes, put it outside for a while and then put it inside the house.

2. There is another way to remove the battery and leave it for about a week to slowly consume the power. You need to use a machine to completely consume the power first. Then charge it fully. I guess your current charging time must be very short. After charging it completely, disconnect it and charge it again. Repeat it several times. It will definitely be effective.

3. In order to fully activate the 18650 lithium battery, it needs to be fully charged and discharged several times. The discharge circuit is composed of a resistor and a light-emitting diode, and the discharge state can be estimated through the light-emitting diode.

Lithium battery processing and welding technology

From the manufacturing of lithium battery cells to the assembly of battery packs, welding is a very important manufacturing process. The conductivity, strength, air tightness, metal fatigue and corrosion resistance of lithium batteries are typical battery welding quality evaluation standards. . Battery products that fail to meet such standards will be strictly prohibited from being sold on the market, which will be a loss for the company.

Laser is used as the welding heat source to weld lithium batteries. An automated welding production line is composed of a welding workbench, precision fixture, automatic loading mechanism and unloading mechanism. It saves labor costs and avoids manual misoperation, and the yield rate reaches more than 98%.

Advantages of laser welding lithium batteries

1. Laser equipment occupies a small area and can release a large amount of space for other flexible arrangements;

2. Laser welding has no air and noise pollution and no dust. It is a product of Xinliyuan and is more suitable for use in high-tech dust-free workshops;

3. The laser has low power consumption, high electro-optical conversion rate, low equipment loss, and greatly reduced maintenance costs, reducing production costs and increasing the production profits of lithium battery manufacturers;

4. Laser welding can adjust the welding speed, welding depth, welding width, etc. according to needs to achieve precise control, adapt to the welding of different materials and products, achieve precise welding, more reliable quality, and a cleaner appearance.

The above is an introduction to the 18650 lithium battery welding method and lithium battery processing and welding technology. As an energy storage battery that has been developing rapidly in recent years, lithium batteries are still relatively mysterious to us in their production and processing technology. As long as we understand these difficulties in power battery welding and avoid them one by one, I believe we will be able to break through the welding difficulties. .