Cylindrical negative spot welder machine

The cylindrical negative electrode spot welding machine is designed specifically for welding the negative electrode ear to the battery casing in cylindrical batteries. It typically uses advanced control technology to ensure precision and consistency in the welding process, suitable for the production of various cylindrical batteries, such as nickel-cadmium, nickel-metal hydride, and lithium batteries.

Product Overview ：

Control Technology: Microcomputer single-chip machine control is adopted for precise welding parameter settings.

Welding Modes: Supports single-pulse, double-pulse, and multi-pulse welding to adapt to different welding requirements.

Operation Interface: Digital control interface makes parameter adjustment intuitive and precise.

Pressure Adjustment: The welding pin pressure can be independently adjusted to ensure stable and reliable welding pressure.

Applicable Materials: Suitable for various welding ears ranging from 0.03mm to 0.25mm, offering a wide range of material adaptability.

Power Requirements: Typically requires an AC220V±10% 50～60Hz power supply.

Air Source Requirements: The input air pressure range is 0.1～0.7MPa.

Product Features：

1.    High-Precision Welding: Ensures uniform and aesthetically pleasing weld points, with minimal sparks and no black spots.

2.     Stability: Overcomes the low pressure and water discharge phenomena after lithium battery spot welding, providing stable welding quality.

3.     Flexibility: Supports various welding modes to meet different welding process requirements.

4.     User-Friendly: The digital control interface allows operators to quickly adjust welding parameters.

5.     Independent Pressure Control: Ensures consistency in welding pressure throughout the process, improving welding quality.

6.      Broad Material Adaptability: Capable of handling welding ears of different thicknesses, increasing the applicability of the equipment.

7.      Easy Maintenance: Equipped with an efficient dust removal system, reducing maintenance time and costs.

8.      Online Monitoring: Able to monitor welding quality in real-time and make dynamic adjustments.

9.     Energy-Efficient and High-Performance: Optimized welding parameter settings reduce energy consumption and increase production efficiency.

Purchase Information：

If you are interested in our multi arc ion coating system, please feel free to contact us for more information and pricing.

Contact phone number: 183-3926-3857

Email: jack@cysitech.com

Contact person: Jack Yang

WeChat: 183 3926 3857

Detailed Parameter： 

 Major parts：

 Application Fields of Cylindrical Negative Electrode Spot Welding Machine

Cylindrical negative electrode spot welding machines are primarily used in the manufacturing of cylindrical lithium-ion batteries. Here are some of the key application areas:

1. Battery Manufacturing: These machines are crucial for joining the nickel tab to the inner aluminum casing in lithium-ion cells, which is critical for the mechanical strength and electrical contact resistance of the joint.

2. Electric Vehicle (EV) Battery Packs: In automotive batteries, numerous individual cells are electrically connected to meet energy and power requirements. The choice of suitable welding techniques is essential for the performance, efficiency, and safety of the battery pack/module .

3. Energy Storage Systems: Cylindrical batteries are used in energy storage systems due to their high energy and power density, good cyclic stability, lightweight, and low self-discharge rate .

4. Electronic Devices: Beyond automotive applications, cylindrical batteries are used in various electronic devices such as mobile phones, laptops, and other portable electronics where high energy density is required.

5. Research and Development: In academic and research settings, these welding machines are used to study the effects of different welding parameters on the electrochemical performance of lithium-ion cells .

6. Battery Pack Assembly: For the assembly of battery packs, spot welding is used to connect battery cells and sheet metal connectors. This method is widely used due to its lower infrastructure cost compared to laser welding .

7. Micro-Mobility Battery Development: Micro-resistance spot welding is particularly attractive for low-to-medium-volume applications such as e-bikes, two-wheelers, or e-rickshaws due to its low maintenance and investment costs, ease of quality control, and ease of operation .

8. Industrial Electronics: In the manufacturing of industrial electronics, where precision and reliability are paramount, cylindrical negative electrode spot welding machines ensure high-quality connections in battery components.

 These applications highlight the importance of cylindrical negative electrode spot welding machines in the production of cylindrical batteries, which are used in a wide range of industries and applications where high energy density and reliable power sources are required.

Application Case: " Experimental Steps for Welding Cylindrical Battery Tabs "

Welding cylindrical battery tabs is a precise process that involves multiple steps to ensure the quality of the weld and the performance of the battery. Here are the general experimental steps for welding cylindrical battery tabs:

Preparation:

Ensure that all welding equipment, including the cylindrical negative electrode spot welding machine, is calibrated and in good working condition.

Prepare the battery tabs and casings required for welding, ensuring their surfaces are clean and free from oil and dirt.

1. Electrode Alignment:

Align the battery tab with the battery casing to ensure they are on the same straight line for easy welding. Alignment is crucial as any deviation can affect the quality of the weld and the performance of the battery.

2. Welding Parameter Settings:

Set the welding current, welding time, and welding pressure according to the material of the battery and design requirements. These parameters directly affect the quality of the weld.

3. Welding Process:

Initiate the welding machine and place the welding head on the contact point of the battery tab and casing.

Apply the set pressure while transmitting ultrasonic energy through the welding head, causing the metal tab and casing to bond under pressure and vibration.

4. Monitoring Weld Quality:

During the welding process, closely monitor the formation of the weld to ensure there are no defects such as cold solder joints or burn-through.

5. Post-Weld Inspection:

After welding is complete, inspect the quality of the weld using a microscope or other inspection equipment to ensure a strong and defect-free bond.

Conduct shear tests or pull tests to evaluate the mechanical strength of the weld.

6. Electrical Performance Testing:

Perform electrical performance tests on the welded battery, including measuring contact resistance and the battery's charge/discharge performance, to ensure the weld has good electrical conductivity.

7. Environmental Control:

Ensure that the environmental conditions (such as humidity and temperature) in the welding area meet the requirements to avoid adverse effects during the welding process.

8. Data Recording:

Record all welding parameters and test results for subsequent data analysis and process optimization.

9. Cleaning and Maintenance:

After welding is complete, clean the welding area and equipment, and perform necessary maintenance to ensure the long-term stability and repeatability of the equipment.

These steps provide a basic framework, but specific operations may vary depending on the type, material, and design requirements of the battery. In practice, adjustments may be necessary based on the experimental objectives and equipment capabilities.