On August 16, the "2024 TOPCon Solar Cell Technology Development Trend Seminar" was held in Shanghai. The conference was hosted by the China Photovoltaic Industry Association, and invited industry authorities, research institutions, photovoltaic power design institutes, and representatives of photovoltaic companies to deeply analyze the development trends and paths of TOPCon technology, and further promote the original innovation and application of battery technology. Dr. Ouyang Zi, Chief Technology Officer of JA Solar Technology, was invited to attend the meeting and held dialogues with several CTOs of TOPCon industrialization leading companies to jointly interpret the underlying advantages and future forms of TOPCon technology.

Ouyang Zi said that a third-party report showed that the overall TOPCon capacity, including the capacity under construction, is expected to approach 900GW, which is enough to meet most of the market demand in the next five years; at the same time, the report predicts that the market share of TOPCon technology based on the estimated shipment volume of TOPCon modules will remain at around 70%-80% in the next five years.

There are two underlying advantages that have made TOPCon technology the absolute mainstream of the photovoltaic panel industry. On the one hand, theoretically speaking, the key factors that need to be considered in battery design are the balance between light absorption, passivation, and multi-carrier transmission. As far as the currently known field is concerned, the system of contact passivation plus poly is the optimal mass production solution, and the TOPCon technology route itself is excellent enough.

On the other hand, the development of photovoltaic mass production technology is a combination of "process + equipment + material". From PERC to TOPCon, the overall change in manufacturing process and equipment does not exceed 30%, but it can greatly improve the conversion efficiency, and the cost performance is extremely high. After conquering key technologies such as boron diffusion and poly deposition, the rapid development of TOPCon became a matter of course, and it naturally became the first choice for leading companies.

At present, the industry should have a consensus on the mainstream status of TOPCon technology for about five years. TOPCon technology is not static. The introduction of new equipment and new materials, the optimization of battery structure and process can all enable the battery efficiency to be continuously improved. For example, metallization, as a key step from battery to component, is very important. As a high-temperature system, TOPCon has more metallization paths to choose from than heterojunction, and has greater potential for innovation and efficiency improvement.

Compared with BC, TOPCon is more suitable as the bottom cell of the stacked cell. In the more distant future, the "TOPCon+perovskite" stacked cell may lead the industry into the era of mass production of "30%+efficiency", and its vitality may far exceed five years.

For example, in July this year, in the "Solar Cell Efficiency Record Table" led by Professor Martin Green of the University of New South Wales, Australia, JA Solar Technology topped the "Mass Production Size TOPCon Cell Efficiency Category" with its mass production cell size, breaking the world record. This record was included in the certification results of the Hamelin Institute for Solar Energy Research (ISFH) in Germany.

Today, ISFH has given the latest efficiency certification results for JA Solar Technology's mass production size cells. This result is further improved compared to the previous certification efficiency. It has been included in the "2024 Solar Cell China Highest Efficiency" record by the Photovoltaic Committee of the China Renewable Energy Society. The efficiency breakthrough of mass production size cells is the most difficult. JA Solar Technology continues to create new records in mass production size cells, which is not only a reflection of its own R&D strength, but also proves the growth potential of TOPCon technology.

In addition, TOPCon technology is still a more suitable technical route for full-scene applications. At present, the global annual installed capacity of photovoltaic power generation has reached hundreds of gigawatts, and the market is increasingly focusing on diverse solutions for different scenarios. It is no longer possible to "cure all diseases with one good prescription". Based on the high efficiency and low cost brought by the scale effect of the TOPCon technology industry, products can achieve rapid response and iteration for different application scenarios. For example, JA Solar Technology has launched corresponding component solutions based on TOPCon technology products for different climate conditions such as deserts, hot and humid weather, plateaus and extreme cold. On the other hand, JA Solar also provides customized products based on TOPCon technology for different regions and scenarios, such as pile-based and floating offshore photovoltaic solutions, single-glass and anti-dust roof photovoltaic solutions, and anti-glare solutions, etc., to meet different market needs.

1. without a rapid shutdown device , there is no safe way to turn off the current running through those conductors
2. most people would assume that simply turning the solar inverter off would turn the power off, but it doesn't work like that. You would still have power being generated by the solar panel and you would still have power in the electrical cables coming from the solar panels.
3. this live current poses and electrocution risk to anyone who comes into contact with the solar panel system, including first responders who may be responding to an emergency on your roof
4. firefighters are at particular risk since it's common for them to ventilate burning structures by cutting holes into the roofs or walls, which may bring them into direct contact with the solar panel system's conductors or wires
5. solar rapid shutdown solves this problem by de-energizing the solar panel system in under a minute，remove the electrocution risk for anyone going on the roof

Solar wall lamps are a smart choice for outdoor illumination, combining convenience with eco-friendly energy. To keep these lights operating effectively, regular maintenance tailored specifically for wall-mounted fixtures is essential. Because they’re positioned vertically, solar wall lamps can gather dust, dirt, and even bird droppings more quickly, which can obstruct sunlight from reaching the solar panels. Cleaning the panels every few weeks with a soft, damp cloth will help maintain their energy absorption efficiency, ensuring bright illumination.

 

Since solar wall lights rely on rechargeable batteries, battery upkeep is another critical aspect of their maintenance. Located outdoors, the batteries face constant weather exposure, which can affect their chafing ability over time. Ensuring the lights receive full sunlight for most of the day will help maintain battery health. In climates with prolonged rainy or cloudy seasons, the batteries may need replacement every 1-2 years, using high-quality replacement batteries can prevent dimming and extend life of you wall mounted solar lights.

 

 

Wall-mounted fixtures are also vulnerable to wind, rain, and impact, making it essential to inspect them for physical damage. Periodically check for signs of wear, such as loose screws, cracked casings, or damaged wiring. Tighten and secure any components as needed to prevent moisture from infiltrating the internal circuitry. Addressing minor issues early will protect the structural integrity of the fixture, preserving both the aesthetic and functional value of solar outdoor wall lights.

 

By following these simple maintenance steps, your solar wall lights will remain and efficient, reliable source of illumination. Keeping the panels clean, caring for the batteries, and inspecting for weather-related wear will ensure your solar wall lights stay bright and functional for many seasons to come.

 

SLD, Solar Lights Do, specializes in manufacturing and selling high-quality solar lights, including efficient and durable solar wall lights designed for outdoor use. For more information about our solar lighting solutions, please visit us at www.solarlightsdo.com.

Solar Chinese lanterns are a beautiful fusion of traditional design and eco-friendly innovation. Modeled after the traditional Chinese lanterns that have been an essential part of cultural celebrations for centuries, solar-powered versions offer a contemporary twist, making them accessible and environmentally responsible. These solar powered lanterns capture the spirit of traditional Chinese festivals, especially the Lantern Festival, where colorful lanterns symbolize prosperity, good fortune, and the joy of communal gatherings. With solar power, users can now enjoy these solar decorative lights in outdoor spaces without the hassle of electrical wiring or batteries.

 

What makes solar Chinese lanterns special is their effortless installation and sustainable operation. Each lantern contains a solar panel that charges during the day, powering the LED light within the lantern at night. This setup eliminates the need for electricity, offering an energy-efficient way to illuminate gardens, patios, and walkways. The lights automatically turn on at dusk, providing a soft, enchanting glow for hours. They’re ideal for outdoor gatherings, celebrations, or even just a cozy, serene ambiance at home.

 

In terms of design, solar Chinese lanterns come in a range of colors, sizes, and materials, from traditional red and gold to contemporary white and pastel shades. Many are made with waterproof and weather-resistant materials to withstand various outdoor conditions, ensuring they can be used year-round. Their designs can vary from intricate patterns to simple, elegant forms, appealing to both lovers of classic Asian aesthetics and those who prefer minimalist decor. Additionally, with no electrical cords to worry about, these outdoor solar LED lanterns can be hung almost anywhere, whether on tree branches, pergolas, or along fences.

 

 

Beyond their decorative appeal, solar Chinese lanterns symbolize a commitment to sustainability. By using renewable solar energy, these lanterns reduce energy consumption and carbon emissions, contributing to a greener planet. Their charm and ecological benefits make them perfect for environmentally conscious individuals seeking ways to incorporate beauty, culture, and sustainability into their living spaces. Solar Chinese lanterns aren’t just lights; they’re a celebration of culture, nature, and forward-thinking design all in one.

 

SLD, Solar Lights Do, is a company that specializes in manufacturing and selling high-quality solar lights. We offer a wide range of efficient and durable solar lighting solutions designed for outdoor use. If you're interested, please visit us at www.solarlightsdo.com.

With the rapid development of the electric motorcycle and automotive industries, battery technology is also advancing. Although alternative technologies like lithium-ion batteries are emerging, motorcycle lead-acid batteries still hold a significant position in the global market due to their cost-effectiveness and reliability. The global market demand analysis for 2024 shows that the market size of motorcycle lead-acid batteries was approximately 16.5 billion RMB in 2023 and is expected to reach 23.6 billion RMB by 2030, with a compound annual growth rate (CAGR) of 5.3%.

 

 

Product Types and Applications

Motorcycle lead-acid batteries are mainly divided into two categories: valve-regulated lead-acid batteries and flooded batteries. These batteries are primarily used in original equipment manufacturer (OEM) markets and aftermarket sectors. The OEM market involves battery installation during new vehicle production, while the aftermarket includes vehicle maintenance and old battery replacements.

 

Regional Demand Analysis

The global demand for motorcycle lead-acid batteries is mainly concentrated in the Asia-Pacific region, particularly in China, India, and Southeast Asian countries. These regions have a large number of motorcycles and sustained economic growth, leading to stable demand for lead-acid batteries. Additionally, North America, Europe, and other regions are also important markets, where aftersales maintenance and old battery replacements support steady market growth.

 

Market Challenges and Opportunities

Although the lead-acid battery market faces challenges from environmental regulations and competition from new battery technologies, the industry is seeking sustainable development paths through technological innovation and improved recycling mechanisms. The low cost and ease of maintenance of lead-acid batteries make them competitive in certain applications.

 

Future Outlook

It is anticipated that over the next few years, the motorcycle lead-acid battery market will continue to grow steadily, especially in emerging markets and developing countries. As global attention on environmental protection and sustainability increases, the lead-acid battery industry needs to continuously adapt to new market demands, enhance product performance, and focus on environmental protection and recycling.

 

Overall, motorcycle lead-acid batteries still maintain a certain level of competitiveness and market demand globally, particularly in cost-sensitive and lower-maintenance regions. With continuous technological advancements and market changes, the lead-acid battery industry needs to innovate and improve constantly to maintain its market position.

Rechargeable fans, with their portability and adaptability, are becoming increasingly essential for households and outdoor enthusiasts. These fans are typically equipped with Valve-Regulated Sealed Lead-Acid Batteries, a.k.a VRLA Batteries, offering numerous conveniences. This blog will explore the advantages of rechargeable fans and provide detailed guidance on their use and care.

 

 

Advantages of Rechargeable Fans

The primary advantages of rechargeable fans lie in their portability and versatility. They can provide cooling air without access to a power source and may also integrate additional features such as LED lights or phone charging ports. Moreover, rechargeable fans are usually designed to be energy-efficient, reducing power consumption and being environmentally friendly.

 

Battery Life

The battery life of a rechargeable fan depends on the battery capacity and the usage mode. Generally, VRLA batteries can provide 4-12 hours of runtime on low speed and may be reduced to 2-6 hours on high speed. Typical batteries for rechargeable fan are: 6V4Ah, 6V4.5Ah, 6V7Ah, 12V4Ah, 12V4.5Ah, etc.

 

Usage and Maintenance Guide

Charging Safety

Use the original charger compatible with the fan for charging.

Avoid continuous charging for more than 24 hours to prevent battery overheating. Monitor the fan during charging to disconnect the power in time. It is recommended to use a smart charger, which can automatically cut off the power after the battery is fully charged to prevent overcharging.

 

Regular Maintenance

Regularly check if the battery is swollen or leaking, as these may be signs of battery damage.

Clean the fan with a soft cloth and mild cleaner, avoiding corrosive chemicals. Regularly clean the fan blades and grille to maintain optimal performance. Use a soft brush or damp cloth for cleaning, avoiding hard brushes or abrasive cleaners.

 

Storage Conditions

Do not store the fan in extreme high or low temperature environments.

Ensure the storage location is dry to prevent moisture from degrading battery performance. If the fan is not used for an extended period, charge it every few months to maintain battery health. Fully charge the battery before storing to extend its lifespan.

 

Transportation Safety

Secure the battery in place during transportation to avoid damage from vibration.

Avoid violent shaking or impact to protect the battery and fan from harm.

 

In conclusion, Rechargeable fans have become an indispensable tool in modern life due to their portability and reliability. Valve-regulated sealed lead-acid batteries provide a stable power supply, allowing rechargeable fans to perform well in various environments. By following the usage precautions mentioned above, users can ensure the long-term effective operation of the fan and maximize the battery life. As technology continues to advance, we can expect rechargeable fans to have even broader applications in the future.

In market transactions and daily logistics, electronic crane scales or hanging scales are highly favored for their portability and precision. These scales not only improve weighing efficiency but also ensure the fairness of transactions. Lead-acid batteries, as the power source for electronic crane scales, are crucial for their stable and economical operation. This article will discuss the working principle, technical parameters, application scenarios, and the application of lead-acid batteries in electronic crane scales.

Electronic crane scales are portable electronic balances that measure mass(weight) while the object is in a suspended state. They capture minor load changes through sensors, converting these changes into electrical signals, which are then transformed into digital signals by an A/D converter, ultimately displaying the weight value on the screen.

 

Main Technical Parameters of Electronic Hanging Scales

These scales typically follow simplified accuracy grades to meet the fast-paced demands of market transactions. Their design focuses on ease of operation and rapid response.

 

Applications and Advantages of Electronic Hanging Scales

Electronic hanging scales are suitable for various market environments, including agricultural product markets, seafood markets, and building materials markets. Their advantages include reducing work processes, accelerating measurement speed, saving labor and resources, and enhancing the transparency and fairness of transactions.

 

Application of Lead-Acid Batteries in Electronic Hanging Scales

As the power source for electronic hanging scales, lead-acid batteries need to provide stable and continuous electricity. They are usually small in size and have a moderate capacity to meet the power needs of electronic hanging scales while maintaining the portability of the device, such as 4V4Ah, 6V1.3Ah, 6V2.5Ah, 6V2.8Ah, etc.

 

Economic Benefits and Safety Considerations

When selecting electronic hanging scales and lead-acid batteries, economic benefits and safety are two important considerations. Lead-acid batteries are widely used due to their high cost-effectiveness and mature technology. Users need to make requirements based on the market environment, considering adaptability issues such as waterproofing and moisture resistance.

 

Universal Interchangeability and After-Sales Service

The universal interchangeability of products and after-sales service are also important factors to consider when selecting electronic hanging scales and lead-acid batteries. Modular design and easily replaceable parts can reduce maintenance costs, and good after-sales service can provide timely support when problems occur.

 

The combination of electronic crane scales and lead-acid batteries provides an efficient and reliable weighing solution for market transactions. With technological advancements, the performance and reliability of these two products will be further improved, bringing more convenience to market transactions. Get more details from www.kaiyingpower.com.

The Canton Fair, also known as the China Import and Export Fair, is a beacon of global trade and a testament to China's economic prowess. Here are ten essential facts that shed light on the significance and impact of this grand trade event.

 

1. A Long-Standing Tradition

With its inaugural event dating back to 1957, the Canton Fair is China's longest-running and largest trade fair. It has since become a staple in the global trade calendar, occurring biannually in the spring and autumn.

 

2. A Global Marketplace

The fair is a melting pot of international business, drawing over 20,000 exhibitors and 200,000 buyers from more than 200 countries and regions, solidifying its status as one of the world's most significant trade fairs.

 

3. Expansive Exhibition Space

Spanning an impressive 1.2 million square meters, the Canton Fair provides a vast platform for companies to display their wares, making it one of the largest exhibitions globally.

 

4. Structured Phases

The fair is strategically divided into three phases per session, each focusing on different industries and product categories, allowing for a more organized and targeted approach to trade.

 

5. Diverse Product Showcase

The Canton Fair is a one-stop platform for a plethora of products ranging from electronics and textiles to home appliances and machinery, offering direct access to manufacturers for global buyers.

 

6. Blending Physical and Digital

The fair combines the traditional physical exhibition with an online platform, enhancing the trade experience and providing additional convenience for buyers and suppliers worldwide.

 

7. Quality Assurance

The Canton Fair maintains a stringent selection process for exhibitors, ensuring that only high-quality products are showcased. This includes evaluations of product quality, production capacity, reputation, and export volume.

 

8. Specialized Zones

The fair features specialized exhibition zones such as the International Pavilion and Smart Home Zone, which cater to specific market segments and provide targeted exposure for exhibitors.

 

9. Embracing Innovation and Sustainability

The fair has been increasingly focusing on new energy and sustainable products like electric vehicles, solar products, and lithium batteries, reflecting the new trends in China's foreign trade and the global shift towards greener practices.

 

10. Global Economic Influence

Beyond its doors, the Canton Fair plays a pivotal role in promoting Chinese enterprises and products in various sectors on the global stage, contributing to the economic dynamism of the electronic, appliance, manufacturing, light industry, and hardware segments.

 

The Canton Fair is more than just an exhibition; it's a gateway to China's market and a platform for international trade and cooperation. As it continues to evolve, one thing remains certain: the Canton Fair remains a vital hub for global commerce and technological exchange. Kaiyingpower has been an exhibitor and excellent lead acid battery supplier at Canton Fair for so many years, below we show you the whole situation of our booth at the 136th Canton Fair.

 

 

 

 

Roller shutter door systems are widely used in commercial and industrial facilities for their convenience and speed. The stability and reliability of lead-acid batteries, which serve as the power source for these systems, directly affect the normal operation of the rolling shutter doors. Proper use and maintenance of lead-acid batteries are essential, and timely and effective troubleshooting is also necessary when problems occur. This article will provide you with maintenance tips, model selection, and troubleshooting methods for lead-acid batteries used in rolling shutter doors.

 

 

Main Models and Application Scenarios

12V1.3AH: Compact design, often used for fire-resistant rolling shutter door controllers to ensure a quick response in emergencies.

 

12V2.9AH: A lightweight choice suitable for small rolling shutter doors or residential garage doors.

 

12V5AH: Suitable for commercial rolling shutter doors, providing sufficient starting current.

 

12V7AH: Typical and common model for roller gates.

 

24V5AH: Provides power for industrial-level rolling shutter doors that require a higher voltage.

 

When selecting a lead-acid battery, consider the size of the rolling shutter door, the frequency of use, and the expected backup power time. Larger rolling shutter doors or environments with frequent use require batteries with a larger capacity. For example, for commercial rolling shutter doors that need to be operated frequently, a 12V5AH or 24V5AH battery may be a better choice because they can provide stronger starting current and longer endurance.

 

Maintenance of Lead-Acid Batteries

 

 

Keep terminals clean: Regularly clean the battery terminals to remove corrosion and dirt, ensuring good electrical contact.

 

Avoid overcharging and over-discharging: Follow the battery's charging and discharging specifications to prevent battery damage.

 

Storage conditions: Store batteries in a cool, dry place, avoiding extreme temperatures.

 

Environmental protection: Dispose of used batteries in accordance with local environmental protection regulations.

 

Common Faults and Troubleshooting Methods

 

Battery leakage: Check if the battery casing and sealing gum are intact, and replace damaged batteries in time.

 

Battery deformation: Avoid overcharging and regularly check if the battery casing is swollen.

 

Short circuit: Check the internal and external connections of the battery to ensure there is no damage.

 

Sulfation: Regularly perform maintenance charging to avoid long-term idleness.

 

Performance decline: If the battery performance declines, replace it with a new one in time.

 

Troubleshooting Tips

 

Rolling shutter door will not open or close: Check if the power lines and battery connections are firm, and whether the battery has enough power.

 

Remote control cannot operate the rolling shutter door: Make sure the remote control battery is powered, and check if the remote control is correctly coded with the rolling shutter door receiver.

 

Rolling shutter door runs slowly or unevenly: Clean the door track and check if the motor needs repair or replacement.

 

Rolling shutter door motor overheats: Make sure the motor is not jammed by foreign objects and that it is well-ventilated.

 

Battery repair: For sulfated batteries, try using a small current for a long time charging method to restore its capacity.

 

The correct use and maintenance of lead-acid batteries are crucial for the normal operation of rolling shutter door systems. By selecting the appropriate battery model and following maintenance tips and troubleshooting methods, you can ensure the long-term stable operation of the lead-acid batteries for rolling shutter doors and provide the necessary power support in emergencies. Remember, if you encounter complex or persistent problems, it is wise to contact a professional technician for inspection and repair in a timely manner.

 

 

HopelightSolar CO., Ltd. introduces an innovative solution for residential solar power needs: the All-in-One Kit solar system. This comprehensive package simplifies the transition to solar energy, integrating all necessary components into a single, efficient setup.

At its core, the All-in-One Kit System comprises advanced solar panels designed for residential use. These panels optimize sunlight conversion, maximizing energy generation while maintaining aesthetics on rooftops.

What sets HopelightSolar's offering apart is the inclusion of a residential battery storage system. This feature allows homeowners to store excess solar energy for use during peak demand or grid outages, ensuring uninterrupted power supply.

Beyond hardware, HopelightSolar provides comprehensive support services, including installation, maintenance, and customer assistance. Customizable options cater to varying energy needs and budgets, empowering consumers to tailor their solar setup accordingly.

In essence, HopelightSolar's All-in-One Kit System revolutionizes residential solar power. By combining simplicity, efficiency, and sustainability, it paves the way for a greener and more resilient future.