Xiamen Zecrown Technology Co., Ltd.

High-efficiency lead-acid equipment manufacturer

How to maintain the Three Phase Transformer for a long lifespan?

Three phase transformers are crucial components in electrical systems as they help distribute power efficiently. To ensure their long lifespan and optimal performance, it is important to properly maintain them. Here are some tips on how to maintain a three phase transformer: 1. Regular Inspections: Regular inspections of the transformer are essential to check for any signs of wear and tear, loose connections, or leaks. Inspections should be carried out by qualified technicians who can identify any potential issues and address them promptly.

What should be noted when using Prismatic Cell?

Prismatic cells are a type of rechargeable battery commonly used in portable electronic devices such as laptops, smartphones, and tablets. When using prismatic cells, there are several important factors to keep in mind to ensure their safe and effective operation:

How does a Cylindrical Cell usually protect itself?

A cylindrical cell typically protects itself through several mechanisms to ensure safe and reliable operation. Some of the key ways in which a cylindrical cell protects itself include: 1. Overcharge protection: Cylindrical cells are designed with built-in protection mechanisms that prevent overcharging. Overcharging can lead to increased temperature, gas generation, and ultimately cell failure. The protection circuitry in the cell monitors voltage levels and shuts off the charging process once the cell reaches full capacity. 2. Over-discharge protection: Cylindrical cells also have protection features to prevent over-discharge. If a cell is discharged beyond a certain point, it can cause irreversible damage and reduce the cell's lifespan. The protection circuitry in the cell will cut off power when the voltage drops below a safe threshold to prevent over-discharge. 3. Overcurrent protection: Cylindrical cells are equipped with protection against high currents. Excessive current can lead to overheating, which can damage the cell and pose a safety risk. The protection circuitry in the cell will limit the current flow to a safe level to prevent overheating. 4. Short circuit protection: Cylindrical cells have safeguards in place to prevent short circuits. A short circuit can cause a rapid discharge of energy, leading to overheating, fire, or explosion. The protection circuitry in the cell will detect a short circuit and disconnect the cell from the circuit to prevent damage. 5. Temperature protection: Cylindrical cells are sensitive to temperature changes, and excessive heat can degrade the cell's performance and safety. The protection circuitry in the cell will monitor the temperature and shut off the cell if it exceeds a safe threshold to prevent overheating. 6. Pressure relief valve: Some cylindrical cells, especially those used in high-performance applications or in extreme conditions, are equipped with a pressure relief valve. This valve releases excess gas that may build up inside the cell due to overcharging or high temperatures, preventing the cell from rupturing. Overall, cylindrical cells are designed with multiple layers of protection to ensure safe operation and prevent potential hazards. These protection mechanisms work together to safeguard the cell from overcharging, over-discharging, high currents, short circuits, overheating, and pressure build-up, ultimately prolonging the cell's lifespan and ensuring reliable performance.

The recycling of lead-acid batteries in China is developing rapidly, with overcapacity and unresolved equipment and process issues

China is a major producer and consumer of lead. Compared with the primary lead extracted from ores, the recycled lead obtained from discarded batteries has lower energy consumption, fewer pollutant emissions, and better meets the needs of low-carbon environmental protection in the production process. On July 7th, at the 17th International Lead and Zinc Summit and International Lead and Zinc Technology Innovation Conference 2022, jointly organized by Shanghai Nonferrous Network Information Technology Co., Ltd. (SMM) and Tianneng Holdings Group Co., Ltd., industry insiders stated that China's recycled lead industry has developed rapidly in recent years, but there are still problems with overcapacity, low profitability, and the need for further improvement in equipment and technology level in the industry. According to the "14th Five Year Plan for Industrial Green Development" released by the Ministry of Industry and Information in November 2021, during the "14th Five Year Plan" period, China's production scale of recycled lead will continue to expand. It is expected that by 2025, China's recycled refined lead will reach 2.9 million tons, with a total market capacity of about 40 billion yuan. Lead acid batteries - The development of recycled lead cycle has become the main driving force for the growth of China's recycled lead industry. More than 85% of China's recycled lead raw materials come from waste lead batteries, and more than half of the lead consumed in the lead battery industry comes from recycled lead. In the afternoon forum, Zhang Chunqiang, Executive Vice President of Tianneng Resource Recycling Business Unit, introduced that in 2021, the production capacity of recycled lead enterprises that extended from battery production enterprises to the dismantling of waste lead batteries reached 4.17 million tons/year, accounting for 38.5% of the recycled lead production capacity. The recycled lead industry has begun to develop towards intelligence and scale. Since 2018, the production capacity of new and ongoing projects has mostly exceeded 100000 tons per year, and the concentration of the industry has rapidly increased.

Nandu Power: Winning the bid for the centralized bidding project of valve controlled sealed lead-acid batteries for China Tower in 2024

According to AI News, Nandu Power (SZ 300068, closing price: 12.31 yuan) announced on the evening of March 14th that the company has won the bid for the centralized bidding project of valve regulated sealed lead-acid batteries for China Tower in 2024. The winning bid amount is approximately 327 million yuan. From January to June 2023, the operating revenue of Nandu Power Supply consisted of resource regeneration industry accounting for 47.12%, power storage accounting for 30.64%, and industrial energy storage accounting for 22.23%. The Chairman and General Manager of Nandu Power are both Zhu Baoyi, a 45 year old male with a master's degree background. As of publication, the market value of Nandu Power is 10.7 billion yuan. Daoda 1997's "Individual Stock Trends" Reminder: 1. Within the past 30 days, the shareholding of northbound funds in Nandu Power has increased by 2.4059 million shares, accounting for 0.29% of the outstanding shares; 2. No institution has conducted research on Nandu Power Supply in the past 30 days.

What does a sodium ion battery rely on to resist "lithium" in the courtroom?

Recently, with the frequent news of the launch of sodium ion batteries, the industrialization of sodium ion batteries has become more clear. (Article from: Energy Review • Chief Energy Outlook ID: CEO-ER) On December 27, 2023, the world's first electric vehicle equipped with sodium ion batteries, Jianghuai Yttrium, was officially launched. The new car began mass delivery on January 5, 2024. This model is positioned as an A00 level micro electric vehicle and currently starts at a price of 59900 yuan. It is reported that Jianghuai Yttrium is equipped with a unique sodium ion cylindrical battery cell supplied by Zhongke Haina Technology Co., Ltd. This battery has a honeycomb battery structure and a safety feature of "never self ignition". On December 28, 2023, the first pure electric A00 level sodium ion battery model, Jiangling Yizhi EV3 (Youth Edition), jointly launched by Jiangling Group and Funeng Technology, was officially launched. Outside of Jianghuai and Jiangling, electric four-wheel vehicle companies such as Chery and BYD, as well as electric tricycle companies such as Huaihai, have clear plans to use sodium ion batteries or have already applied for relevant vehicle models to the CRRC Vehicle Technical Service Center; Electric two wheeled vehicle companies such as Yadi, Tailing, and Xinri have launched models equipped with sodium ion batteries. These enterprises have become promoters of the sodium ion battery industry. Regarding this, Moko, the founder of third-party battery industry research think tank and true lithium research, said that after the maturity of sodium ion battery technology, it is bound to invade the market of some lead-acid batteries and lithium iron phosphate batteries. However, this will be a long and tortuous process. In 2021, sodium ion batteries rapidly rose due to the skyrocketing price of lithium, but with lithium prices returning to normal, the cost advantage of sodium ion batteries will no longer be prominent.