Why not use soldering iron for lithium battery welding

Under ordinary conditions, lithium batteries can not be welded directly with a soldering iron, and some people say that they can be scraped directly with a sharp thing to make its appearance uneven and rough, and stop welding, which is too low, only suitable for people who are interested in playing. In particular, the aluminum pole ear of the soft pack lithium battery can not be welded with a soldering iron. At present, there are two welding methods on the market, one is a laser welding machine, and the other is an ultrasonic welding machine. Laser welding machine due to the high price, consumables are also high, this time do not discuss, but it is not to say that there are no advantages. Let's understand how ultrasonic lithium battery welding is welded.

The ultrasonic lithium battery welding machine is used for similar welding of metals, and can perform single point and multi-point short strip welding of thin data of copper, silver, aluminum and nickel non-ferrous metals, and can be widely used for welding of various shapes such as the pole ear of the fuse plate lithium battery.

Ultrasonic lithium battery welding machine

Ultrasonic metal spot welding machine adopts electronic program control, high power, high efficiency, automatic control, easy operation, built-in electronic maintenance circuit, safe use, stable and reliable work. The weldment has the characteristics of strong welding surface, high strength, objective and environmental protection.

Application request

Supply voltage: 220V/10A1P 50HZ±5%

Compressor displacement: 0.1M/Min

Ambient temperature: 0 ~ 40℃

Relative humidity: 35% ~ 85%

Atmospheric pressure: 86 ~ 106Kpa

Working principle

Welding principle:

When welding, the transducer converts the high-power vibration signal of 20KHZ into the corresponding mechanical energy, which is applied to the contact interface of the metal parts required to be welded, and the fierce friction at the joint of the welding parts generates high heat instantly, so that the molecules alternately fuse, so as to achieve the welding effect.

Factors affecting welding quality:

When welding is stopped, it is necessary to apply the necessary pressure to the welding part, while strictly controlling the welding time and ultrasonic power. Pressure, time and power are the three elements to ensure the quality of welding.

Welding pressure: Pressure is applied to the welding part in order to form a more stable welding load for the acoustic component. Due to the static pressure applied to the weldment, the weldment data contact surface is good, so that more ultrasonic energy can be absorbed. To achieve the effect.

Lithium battery copper foil aluminum foil welding machine

Welding time: Because the output power of the welder is certain, the energy obtained by the weldment is proportional to the ultrasonic action time, so the choice of welding time is the key. If the welding time is short, it will show virtual welding, and if the welding time is long, the welding part will be deformed. The welding time needs to be confirmed after repeated experiments.