The welding effect of 18650 lithium battery spot welding machine is influenced by various factors, including the following main aspects:

1、 Welding parameter settings:
Current size: The welding current directly affects the melting situation and welding quality of the welding joint, and it needs to be reasonably set according to parameters such as battery type and thickness.
Welding time: Welding time determines the input time of heat during the welding process, and whether it is too long or too short can affect the quality of the welded joint.
Pressure magnitude: Appropriate welding pressure helps ensure good contact of the welded joint, but excessive pressure may cause deformation or damage to the welded joint.

2、 Electrode design and materials:
Electrode shape: The shape of the electrode directly affects the shape and quality of the welding joint, and a suitable electrode shape needs to be designed according to specific welding requirements.
Electrode material: Electrode materials should be selected with good conductivity, wear resistance, and heat resistance, such as pure copper or copper alloy, to ensure stability and durability during the welding process.

3、 Battery surface treatment:
Surface cleaning: Before welding, it is necessary to clean the surface of the battery to remove oil stains and oxides, in order to ensure good contact of the welded joint.
Surface coating: In some cases, a layer of welding flux or coating can be applied to the welded joint to improve welding stability and corrosion resistance.

4、 Welding environment:
Temperature: The temperature of the welding environment can affect the working effect of the welding machine and the quality of the welding joint, and it needs to be maintained within an appropriate temperature range.
Humidity: Excessive humidity may cause oxidation of welded joints, affecting welding quality.

5、 Operational techniques:
The technical level and experience of operators have a direct impact on the welding effect, and it is necessary to train and improve their welding skills.
The welding position and posture can also affect the quality of the welded joint, and it is necessary to pay attention to operating standards and correct operating posture.

6、 Equipment maintenance:
The maintenance and upkeep of welding machine equipment can also directly affect the welding effect. It is necessary to regularly clean, lubricate, and maintain the equipment to ensure that it is in good working condition.
In summary, the welding effect of the 18650 lithium battery spot welding machine is affected by multiple factors, and it is necessary to comprehensively consider and reasonably set welding parameters, maintain good operating techniques and equipment maintenance, to ensure the quality and stability of the welding joints.