After years of development in the lithium battery industry, from the initial AC pulse spot welding machine to energy storage spot welding machine, intermediate frequency spot welding machine, transistor-type spot welding machine, to laser spot welding machine, spot welding equipment is continuously upgraded, and spot welding The quality has also been continuously improved. But we often see all kinds of spot welding machines gathered in the same production workshop, playing their respective roles. Spot welding machines with poor performance have not been eliminated. Why? We start from various spot welding machines. To understand their performance in depth.

The AC pulse spot welding machine uses the SCR controlled by the single-chip microcomputer to intercept the AC pulse voltage to the primary coil of the welding transformer, and the transformer converts the high-voltage pulse into a low-voltage large current and outputs it to the spot welding needle for discharge spot welding.

Energy storage spot welding machine   controls the charging voltage of the energy storage capacitor through a single chip microcomputer, and then controls the discharge time of the capacitor to the welding transformer, so that the secondary of the welding transformer outputs the same amount of work every time to discharge the spot welding needle.

Intermediate frequency welding power source   AC input current is rectified into direct current, and the direct current is converted into high frequency pulse by inverter to the primary of intermediate frequency transformer. After the transformer secondary output waveform is full-wave rectified, it outputs a stable low voltage large current to the spot welding needle to discharge the spot welding.

Transistor welding power supply is the most ideal resistance welding power supply. It does not require a welding transformer, and the current rises quickly. It directly outputs the current waveform with high frequency. It can choose constant current, constant voltage or constant current and constant voltage control methods, but it also has the disadvantage of being expensive.

The laser spot welder is composed of crystal, xenon lamp, condenser cavity, optical resonant cavity, cooling filter components and laser power supply. In the battery industry, the welding of steel shells and aluminum shell cover plates has been widely used. In recent years, spot welding of polymer PACK protection plates has also begun to be used. Compared with resistance welding, laser welding machine has the advantages of not needing to grind the spot welding needle, the welding is firm, the welding spot is uniform, and it is not easy to produce false welding, but it also has the disadvantages of high price and high maintenance cost.

ACEY provides all kinds of battery spot welding machine.