行业知识

According to statistics, the global demand for lithium-ion batteries has reached 1.3 billion, and with the continuous expansion of the scope of use, this data is increasing year by year. Because of this, with the rapid increase in the use of lithium-ion batteries in various industries, the safety performance of batteries has become increasingly prominent, which requires not only excellent charging and discharging performance of lithium-ion batteries, but also higher safety performance. Why did the lithium-ion batte

Abstract: In view of the use of power lithium-ion batteries in groups, each lithium-ion battery requires protection against charging overvoltage, discharge undervoltage, overcurrent and short circuit, and the problem of equalizing the charging of the whole group of batteries during the charging process, this paper analyzes the design method of a battery pack protection board with equalizing charging function that uses a single lithium-ion battery protection chip to protect any group of lithium-ion batteries in seri

Recently, the incombustible battery technology developed by Micromacro held a global announcement in Beijing Water Cube. This 8-year research and development achievement has far-reaching significance for the whole new energy. It is understood that the incombustible battery technology has dealt with the safety dilemma surrounding lithium ion batteries from both active and passive defense levels. It is an innovative and leading new technology in the battery industry and is expected to refresh the global safety techno

General series charging At present, lithium ion battery packs are generally charged in series, which is critical because of its simple structure, low cost and easy implementation. However, due to the differences in capacity, internal resistance, attenuation characteristics, self discharge and other performances between single lithium-ion batteries, when the lithium-ion battery pack is charged in series, the single lithium-ion battery with the smallest capacity in the battery pack will be the first to overflow. A

Nissan Automobile and Nissan ARC announced on March 13, 2014 that they have developed a decomposition method that can directly observe and quantify the electronic movement in the cathode material during the charging and discharging of lithium ion batteries. By adopting this method, it is possible to develop high-capacity lithium-ion batteries, thus helping to extend the range of pure electric vehicles (EVs). To develop lithium-ion batteries with high capacity and long life, it is necessary to store as much lithi

Although both the national level and the company level have great hopes for hydrogen fueled vehicles, some experts seem not optimistic about this. "The key technologies have not been solved, so we should go back to the laboratory for continuous research. It is unreasonable to call for the development of hydrogen fueled vehicles before the two key issues of membrane and catalyst have been solved." At the first "Sanlitun Salon" held by BAIC BJEV recently, Professor Chen Quanshi, the director and d

Recently, researchers at Linköping University in Sweden have successfully developed a new type of fuel cell using lignin from trees as a raw material. Unlike batteries that use small molecules such as methanol and ethanol as fuel, this process does not generate carbon dioxide, not only is the raw material green and environmentally friendly, but also the product achieves zero carbon emissions. Lignin is an important structural material for plants and algae. It is common in bark or wood and is one of the by-p

ASX-listed Lithium Australia will apply for two additional patents for its chemical-based SiLeach lithium extraction process to lock in a process for recovering lithium without significant evaporation. Technological improvements will reduce the capital and operating costs associated with managing the water balance for process liquid lithium recovery, while improving the quality of the lithium chemicals and potassium by-products produced by SiLeach. The new process steps are the result of Lithium Australia'

A fuel cell is a chemical device that directly converts the chemical energy of fuel into electrical energy, also known as an electrochemical generator. It is the fourth power generation technology after hydropower, thermal power and atomic power. Since the fuel cell converts the Gibbs free energy part of the chemical energy of the fuel into electrical energy through electrochemical reaction, it is not limited by the Carnot cycle effect, so the efficiency is high; in addition, the fuel cell uses fuel and oxygen as b