VCHICS Portable 99-Speed Spot Welder Kit Instruction Manual

1. Introduction

This instruction manual provides essential information for the safe and effective use of your VCHICS Portable 99-Speed Spot Welder Kit. Please read this manual thoroughly before operating the device and retain it for future reference. This kit is designed for spot welding nickel sheets, primarily for 18650 lithium battery packs and other circuit board applications.

2. Safety Information

Warning: Improper use of this device can result in electric shock, burns, or fire. Always follow safety precautions.

• Always wear appropriate personal protective equipment (PPE), including safety glasses and gloves, when operating the spot welder.
• Ensure the work area is well-ventilated and free from flammable materials.
• Do not operate the device in wet conditions or expose it to liquids.
• Keep children and unauthorized personnel away from the operating area.
• Use only the specified power supply and accessories.
• Do not touch the welding pens or workpieces immediately after welding, as they may be hot.
• Disconnect the power supply when not in use or before performing any maintenance.
• Never attempt to modify or repair the device yourself. Contact qualified personnel for service.

3. Package Contents

Verify that all items are present in your package:

• Spot Welder Control Board
• Red Welding Pen
• Black Welding Pen
• Input Power Cables (Red and Black)
• Nickel Strips (for testing)
• Mounting Screws
• Heat Shrink Tubing

Figure 3.1: Contents of the VCHICS Portable Spot Welder Kit, including the main board, welding pens, power cables, and accessories.

4. Product Overview

The VCHICS Portable Spot Welder Kit features a compact design with advanced functionalities for precise spot welding.

Key Features:

• Integrated Voltmeter: Built-in 12-bit high-precision ADC for voltage measurement with accuracy up to 0.01V. Automatically displays voltage when connected to power (8-24V range).
• 99-Speed Power Adjustment: Real-time digital display for precise power level selection.
• 8 MOS Tubes: Enables a peak welding current of up to 2400A for strong welds.
• Bilateral Output: Designed for easy and reliable spot welding connections.
• Super Thick Copper Pipe: Utilizes 12 AWG wire and alumina copper spot welding needles for excellent current capacity and durability, enhancing welding efficiency.

Figure 4.1: Top view of the spot welder control board, highlighting the 8 MOS tubes, digital display, and input/output terminals.

Figure 4.2: Detailed view of the spot welder board with labels for Pen Output (+/-), MOS tubes, Power Input (+/-), TX60 interface, Foot Switch Interface, Gear Position buttons (SW1, SW2), and Buzzer.

Figure 4.3: The spot welder also functions as a voltmeter, displaying the input voltage on its digital screen.

5. Setup Instructions

Follow these steps to set up your spot welder:

1. Connect Welding Pens: Connect the red welding pen to the "Pen output +" terminal and the black welding pen to the "Pen output -" terminal on the control board. Ensure connections are secure.
2. Connect Power Source: Connect your 8V-24V DC power source (e.g., a battery pack) to the "Power input +" (red) and "Power input -" (black) terminals. The TX60 interface can also be used for power input. Ensure correct polarity.
3. Power On: Once connected, the digital display will automatically show the input voltage.

Figure 5.1: Diagram illustrating the connection of welding pens and power input to the spot welder board. The red welding pen connects to the positive output, and the black welding pen connects to the negative output. The power source (battery) connects to the positive and negative input terminals.

6. Operating Instructions

Operating the VCHICS spot welder involves adjusting the power level and performing the weld.

1. Power Adjustment: Use the "Gear position -" (SW1) and "Gear position +" (SW2) buttons to adjust the welding power level. The digital display will show the current gear setting (1-99). Start with a lower setting and increase gradually until a satisfactory weld is achieved.
2. Welding Process:
   • Place the nickel strip onto the battery terminal or workpiece.
   • Position both welding pens firmly onto the nickel strip, ensuring good contact with the workpiece.
   • The device will automatically detect contact and initiate a weld after a short delay (typically 0.5-1 second). A buzzing sound may indicate the welding process.
   • Lift the welding pens after the weld is complete.
3. Testing Welds: After welding, gently try to peel off the nickel strip. A strong weld will resist peeling or tear the nickel strip itself. Adjust the power setting as needed.
4. Turning Off: To turn off the device, disconnect the power source.

Note: The optimal welding power setting depends on the thickness of the nickel strip and the type of battery/material being welded. Experiment with scrap materials first.

7. Maintenance

• Keep the device clean and free from dust and debris. Use a soft, dry cloth for cleaning.
• Inspect welding pens and cables regularly for wear or damage. Replace if necessary.
• Store the spot welder in a dry, cool place when not in use.
• Ensure proper ventilation during operation to prevent overheating.

8. Troubleshooting

• No Power/Display Off:
  • Check power source connection and ensure it is within the 8V-24V range.
  • Verify power cable polarity.
• Weak Welds/No Weld:
  • Increase the welding power setting (gear level).
  • Ensure welding pens are making firm and clean contact with both the nickel strip and the workpiece.
  • Check for oxidation on the nickel strip or workpiece; clean if necessary.
  • Ensure your power source can deliver sufficient current for welding.
• Overheating:
  • Allow the device to cool down between prolonged welding sessions.
  • Ensure adequate ventilation around the control board.

9. Specifications

10. Warranty and Support

Information regarding specific warranty terms and direct customer support for this product is not available in the provided details. For assistance, please refer to the retailer or your point of purchase.