The Intrinsic Artifacts

The fun and challenge of DIY battery packs

The DIY 18650 battery pack is not only a practical skill but also a sense of accomplishment. With the widespread adoption of lithium battery technology, more and more people are looking to assemble their own battery packs, whether it's for power tools, power banks, or solar energy storage systems, even if 18650 batteries are their first choice. However, welding links during the assembly process often pose a barrier for beginners. Traditional welding methods are easy to damage the battery, but professional welding methods are usedIt can greatly improve the success rate. In this article, we will provide you with detailed tips and precautions for spot welding machines to complete battery pack production safely and efficiently.

Get ready

Before welding begins, thorough preparation is key to ensuring success. First of all, it is recommended to choose a high-quality 18650 battery and give preference to models with protective plates to avoid overcharging or over-discharging. Second, checkThese include the cleanliness of the electrodes, the stability of the power supply, and the degree of wear of the solder pins. Auxiliary tools such as nickel sheets, insulating washers, and fixtures should also be prepared in advance, and the recommended thickness is between 0.1mm and 0.2mm to ensure conductivity and weld strength. Safety protection should not be neglected, and goggles and high-temperature gloves can effectively reduce risks.

18650 battery compatible

When choosing a battery, make sure its voltage and capacity meet your needs. The common 18650 batteries in the Hong Kong market range from 2000mAh to 3500mAh, and it is recommended to use the same batch of batteries to ensure consistency. If there is dirt on the positive and negative electrodes of the battery, gently wipe it with an alcohol cotton pad.

Inspecting and Configuring Spot Welding Machines

After turning on the spot welding machine, first test whether the no-load voltage is stable. Adjust the welding current and time according to the thickness of the nickel sheet, but the initial setting is usually as follows:

 

 

• Current: 300A-500A
• Time: 3ms-5ms

If the welding needle oxidizes, it can be lightly sandbed with fine sandpaper to restore its conductivity.

Detailed Spot Welding Procedure

The welding process requires meticulous and precise use, and the specific steps are as follows:

Cutting and placing nickel sheets

Cut the nickel sheet according to the battery pack arrangement, ensuring it is long enough to connect adjacent cells. When placing the nickel sheet, make sure it completely covers the positive and negative electrodes of the battery and secure it with clamps to prevent it from shifting.

Selecting the location of the solder joint

It is recommended to solder 2-3 solder points per cell and distribute them evenly to distribute the current. Avoid placing the solder joint too close to the end of the battery to avoid damaging the housing.

Welding parameter setting

First time usingIt is recommended to start testing with low parameters and gradually adjust to the best results. Here is a reference table:

 

Nickel Plate Thickness	Current (A)	Time (ms)
0.1mm	300-350	3-4
0.15mm	350-450	4-5

Spot welding as a demonstration

Press the solder pin vertically against the nickel sheet and touch the start switch. If you hear a clear "pop" sound, it indicates that the welding is complete. If the sound is dull, the parameters may be insufficient or the welding pins may not be pressed.バッテリー製造機

Weld Quality Inspection

Once done, use tweezers to gently pull on the nickel sheet and test its hardness. The solder joint should have a uniform, circular indentation with no burn marks around it.

Common problems and solutions

Even experienced DIY enthusiasts may encounter issues such as:

The solder joint is not strong

The reason may be a lack of current or too short a soldering time. It is recommended to gradually increase the parameters so that each adjustment does not exceed 10%.18650リチウム電池用スポット溶接機

The battery overheats

Continuous welding can increase the battery temperature. Pause soldering for 3 seconds every 4-10 points to dissipate the battery.

welding short circuit

Accidentally touching the positive and negative poles of the battery can cause a short circuit. When doing this, make sure that the nickel sheet only touches a single electrode.

Welding needle bonding

When gluing the welding needle to the nickel sheet, do not pull it forcibly. After turning off the power, you can tap the solder pins or treat them with a specialized cleaner.

Improved spot welding skills

After mastering the basic work, you can further optimize the welding effect.

Uniform welding skills

Keep the pressure of the solder needle constant and avoid tilting. It is recommended that the soldering sequence be stretched outward from the center of the battery pack to reduce cumulative errors.

Simple welding tips

Pre-positioning the nickel sheet and securing it using magnetic clamps can significantly improve efficiency.

Aesthetic skills of solder joints

To make the shape of the solder joint more regular, choose a solder pin with a circular concave surface. After welding, wipe the surface with a soft cloth to remove any oxides.

Safety Precautions

useSafety is always a top priority.

Dangers of Battery Short Circuit

A short circuit in a lithium battery can cause a fire. The work surface should be kept dry and away from flammable materials.

Risk of burns

The instantaneous temperature of welding can reach hundreds of degrees, so be sure to wear protective gloves when working.

Welding Fume Hazards

Nickel fumes emit trace amounts of metal fumes when heated, so it is recommended to do so in a well-ventilated environment or under a mask.

Safety first, enjoy the fun of DIY

Through the introduction of this article, I believe you are rightI have a comprehensive understanding of the job. From preparation to advanced skills, every step is about success or failure, and safety. In recent years, DIY battery packs have become increasingly popular in Hong Kong, but related accidents have also been heard from time to time. Only by strictly adhering to safety standards can you truly enjoy the fun of DIY. Try it now and create your own high-efficiency battery pack!

Comprehensive analysis o

Why Do You Need a Spot Welding Machine? 18650 Battery Application Scenario Overview

In modern electronics, 18650 lithium batteries have become a preferred choice for many applications due to their high energy density, long lifespan, and stability. From laptops and power tools to electric vehicles and energy storage systems, the widespread use of 18650 batteries makes spot welding machines indispensable. Spot welding machines (Its primary function is to securely weld the battery electrodes with nickel strips or other conductive materials to ensure the stability and safety of current transmission.

For DIY enthusiasts and small studios, spot welding machines not only enhance work efficiency but also ensure weld quality. For example, when creating homemade battery packs, poor welding can lead to poor contact, heat generation, and even short circuits, affecting equipment performance or causing safety hazards. Therefore, choosing the right spot welding machine is crucial (Important.

In addition, with the growing demand for renewable energy and electric vehicles in Hong Kong and other places, the application scenarios of 18650 batteries are also expanding. Many small and medium-sized enterprises and individuals have begun to invest in the production and maintenance of battery packs, resulting in a continuous increase in market demand for spot welding machines. Understanding the price and performance of spot welding machines can help you make more informed purchasing decisions.

Key Factors Affecting the Price of 18650 Spot Welding Machine

Power and performance: pulse energy, weld thickness, etc.

The power output of a spot welding machine directly affects its welding capabilities. High-power spot welding machines can typically handle thicker materials, such as welding multiple layers of nickel strips or welding thick battery electrodes. Pulse energy is also an important indicator that determines the instantaneous energy output during welding. Generally, the higher the pulse energy, the stronger the welding effect, but the price will increase accordingly.

 

• Low power modelA: It is suitable for welding single-layer nickel strips, and the price is as low as about HKD 500-1,000.
• Medium Power ModelsA: We can process double-layer nickel strips, and the price is about HKD 1,000-3,000.
• High Power ModelsA: It is suitable for professional production lines, and the price starts from HKD 3,000.

Welding method: traditional spot welding, energy storage spot welding, laser spot welding, etc.

The difference in welding methods also affects the price. Traditional spot welding machines are cheaper, but the welding effect may not be as stable as energy storage spot welding machines. Energy storage spot welding machines can provide more stable weld quality by storing energy in advance, making them suitable for high-precision needs. Laser spot welding machines are a high-end choice, expensive but very fast and accurate, mainly used for large-scale production.

Brand and Origin: Price Difference between Domestic and Imported Brands

Domestic brands such as "XX" and "YY" are usually cheaper and suitable for users on a budget. Imported brands such as Japan and German equipment may be 2-3 times more expensive but are more guaranteed in terms of quality and durability. In the Hong Kong market, domestic brands account for about 70% of the sales share, indicating that they are widely recognized for their cost performance.

Features and configurations: digital display, adjustable current, safety protection, etc.

Modern spot welding machines often come with features like digital displays, adjustable current, and more, which can drive up the price. While safety protection features like overcurrent and overvoltage protection increase the cost, they can significantly reduce the risk, making it worth the investment.

Degree of Automation: Handheld, Desktop, Automation Equipment

Handheld spot welding machines have the lowest price and are suitable for small-scale operations. Benchtop equipment is suitable for use in studios. Fully automatic equipment is suitable for production lines and is the most expensive, but it can greatly improve efficiency.

We recommend 18650 spot welding machines in different price ranges

Entry-Level (HKD 500-1,500): Suitable for DIY enthusiasts

Entry-level spot welding machines are typically handheld and have lower power output, but they are sufficient for personal DIY needs. For example, the basic model of the "AA brand" costs around HK$800 and is suitable for welding single-layer nickel strips. These devices are simple but lack advanced features, making them suitable for users on a budget.バッテリー製造機

Mid-range (HKD 1,500-5,000): Suitable for small studios

Mid-range spot welding machines are typically equipped with digital displays and adjustable current capabilities, and are advanced models of "BB brand" priced at around HK$3,000. This type of equipment can process double-layer nickel strips for more consistent welding results, making them suitable for small or frequently used workshops.

High class (HKD 5,000+): suitable for professional production lines

Most of the high-end spot welding machines are fully automatic equipment, such as CC brand industrial-grade models, and the price starts from HK$5,000. This type of equipment is fast and accurate, and has a variety of safety protection functions, making it suitable for mass production and professional repair shops.

Precautions when buying an 18650 spot welding machine

Safety: Over-current protection, over-voltage protection, etc.

The biggest concern when purchasing a spot welding machine is safety. The equipment should have features such as over-current protection and over-voltage protection to avoid accidents during the operation process. In the Hong Kong market, equipment that meets international safety standards usually has CE or UL certification and should be prioritized when purchasing.

Ease of use: operation interface, complete accessories, etc.

Whether the interface is intuitive or the accessories are complete also affects the user experience. For example, digital displays allow users to adjust parameters more intuitively, and a wide range of accessories (such as electrode heads with different specifications) can improve device suitability.

After-sales service: warranty period, technical support, etc.

After-sales service is a guarantee of long-term use. It is recommended to choose a brand that offers at least one year of warranty and ensures that technical support is readily available. Local brands in Hong Kong usually perform well in this area, offering quick repairs and consulting services.

How to Choose the Right 18650 Spot Welding Machine for Your Needs and Manage Your Budget

When choosing a spot welding machine, you must first clarify your needs. DIY enthusiasts can choose entry-level equipment, while professional users should invest in mid-to-high-end models. From a budget planning perspective, it is recommended to consider subsequent consumables (such as electrode tips) and maintenance costs. In the Hong Kong market, domestic brands are generally more cost-effective and suitable for most users.

In other words, the 18650 spot welding machine (The price is influenced by a variety of factors, from power and welding methods to brand and features. Whether for personal use or professional production, choose the right oneThis greatly improves work efficiency and safety.18650リチウム電池用スポット溶接機