Purchasing skills of 18650 battery automatic spot welder

With the rise of new energy electric vehicles, 18650 batteries, which have been silent for many years, finally broke out. In addition to notebook batteries, domestic 18650 cells have fully penetrated into many industries such as electric vehicles, motorcycles, balance vehicles, electric tools, mobile lighting, mobile power supply and so on. The battery consumption of 18650 has increased, and the spot welding machine, as the key equipment of 18650 combination, is gradually upgraded from pedal spot welding machine to automatic spot welding machine.

18650 battery pack spot welding machine is divided into two types. One is a parallel spot welding machine, which is composed of automatic feeding combination, spot welding, nickel cutting belt and other mechanisms. It can only be used for simple parallel combination of mobile power supply; The other is multi parallel and multi series combined battery automatic spot welding machine, which needs to be equipped with spot welding fixture. It is composed of manually filled battery, nickel sheet and automatic shift spot welding battery. This kind of automatic spot welding machine is suitable for combined spot welding of various cylindrical batteries and is widely used. It can be divided into electric vehicle battery automatic spot welding machine, electric vehicle battery automatic spot welding machine Electric tool battery automatic spot welding machine, balance vehicle battery automatic spot welding machine, mobile lamp battery automatic spot welding machine, torsion vehicle battery automatic spot welding machine, etc. From the machine structure and function division, multi parallel and multi series combination spot welding machines are divided into two categories, one is plane spot welding machine, and the other is double-sided spot welding machine. Here, the advantages, disadvantages and purchase skills of these two types of spot welding machines are mainly analyzed.

The plane spot welding machine is composed of spot welding platform, XY axis moving gantry and welding head. When working, place one end of the battery pack upward on the spot welding platform. According to the set displacement procedure, move the gantry along the XY axis to move the welding head to the top of each 18650 battery for spot welding. After spot welding, manually turn over the battery and then spot weld the other end of the battery pack.

The double-sided spot welding machine is composed of a spot welding platform, a left XY axis moving frame, a right XY axis moving frame, a left welding head and a right welding head. During operation, lay the battery pack on the spot welding platform, and the two ends of the battery to be spot welded shall be placed in the left and right directions. According to the set displacement procedure, the left and right XY axis moving frame moves the left and right welding heads to the end face of each 18650 battery for spot welding at the same time.

From the above analysis, it is not difficult to see that the double-sided spot welding machine is almost the combination of two plane spot welding machines, so its cost is almost twice that of the plane spot welding machine. At the same time, the function of the double-sided spot welding machine is very narrow, and it can only spot weld the cylindrical battery pack. Because of its desktop structure, the plane spot welding machine can spot weld 18650 batteries, It can also spot weld polymer battery and aluminum shell battery spot welded with straight nickel sheet of protective plate. If necessary, it can also be used as pedal spot welding machine, which is widely used.

Many friends will ask about efficiency when preparing to buy 18650 battery pack automatic spot welder. To be frank, they ask how many points an hour. In fact, this question is difficult to answer. This spot welding machine itself is not a full-automatic spot welding machine, but a semi-automatic spot welding machine. It is composed of manual filling and automatic shift spot welding. The automatic shift spot welding machine is very fast, and the low-cost plane spot welding machine can meet the needs of mass production, unless we return to the starting point and use the crowd tactics, The double-sided spot welding machine can only be fed by more personnel filling batteries and nickel sheets. Of course, some people will say that the efficiency of double-sided spot welding machine with two more people is much higher than that of plane spot welding machine, which is still cost-effective. In fact, this idea ignores the essence of the machine, that is, the price of double-sided spot welding machine is much more expensive, and the machine structure is complex, and the failure rate will be much higher. For example, four people are equipped with one double-sided spot welding machine and four people are equipped with two flat spot welding machines. Their output is consistent with the purchase cost. I believe many people will choose to buy two flat spot welding machines. First, two spot welding machines can arrange the launch of two products at the same time; Second, there are two spot welding machines in hand. If one fails, it will not stop production. Moreover, the probability of failure of plane spot welding machine itself is lower than that of double-sided spot welding machine; Third, the operators gather, and it is inevitable to have a lot of talk; Fourth, maximize machine utilization.

In addition to efficiency, we also pay attention to the spot welding effect, such as whether there will be false welding, fire explosion, large spark, etc. The spot welding effect mainly depends on the welding power supply. According to the configuration of high, medium and low, it can be divided into transistor welding power supply, medium frequency welding power supply, energy storage welding power supply and AC welding power supply