Articles about the repair and service work
This section presents articles about repair and maintenance works, what you can do with your own hands, and what not to do for safety. Some of the discussed works are presented in the services section. Read, enlightened!
This article is for those who have not heard what is spot welding of 18650 batteries. You can't say that as something new. The technology itself has existed for several decades and is widely used in the welding of automobile bodies. With the advent of 18650 battery cells, the problem of assembling them into single battery packs became acute. Here and remember that there is a way to bond metallic elements like spot welding, not warming them and providing a secure bond.
Lithium ion 18650 battery in the battery blocks are held together not by the normal soldering. Spot welding 18650 is carried out on special devices. The principle of operation of such a device is based on the short-term current transmission between the two electrodes and the contact plate. Due to the large value of the transmitted current and the short-term pulse, in places of contact there is a strong point heating. As a result, metals penetrate each other and form a strong connection.
If you do not have a welding machine, then in Moscow you can use the service of spot welding. As a rule, it is resorted to by people who design batteries for Hobie devices or electric vehicles. Provided that spot welding services are required for an already assembled battery, you will be guaranteed a minimum price for the work. Such batteries are already fastened together and they produced the necessary wiring of Nickel plates, and sometimes balancing wires. The master will take only for spot welding of elements, as a rule, it is about 50 rubles. for one contact. When ordering spot welding services in Moscow for large batteries or several pieces, of course, offer a discount.