New lithium battery technology will increase the range of new energy vehicles

A new type of lithium battery technology will improve the mileage of new energy vehicles. A new type of battery preparation technology has passed the scientific and technological achievements review and product evaluation organized by the my country Science and Technology Industrialization Research Association and the my country Machinery Industry Association. It is reported that this new technology called Square Flexible Packaging 5 Ah/Vanadium Phosphate Lithium Graphite Lithium Battery was developed by Tianjin University, Harbin New Energy Automobile Distance Power Lithium-ion Battery Co., Ltd., and Heilongjiang Distance and New Energy Technology Development Co., Ltd. Experts believe that this technology has reached the domestic and international advanced level in battery low temperature function, and will greatly improve the technical level of life, low temperature, and safety of new energy pure electric vehicles. Professor Tang Zhiyuan of Tianjin University said that compared with traditional batteries, lithium vanadium phosphate as the negative electrode material has the characteristics of large capacity, good safety, long service life, and good low-temperature performance. At present, the most widely used cathode materials in the market are lithium cobalt acid, lithium manganese acid, ternary materials and lithium iron phosphate. These batteries have their own characteristics, but one of the shortcomings is that the safety hazard is high, the electric vehicle battery explodes or burns, and the lithium battery is widely used in the electric vehicle field, and safety is the primary problem that must be solved. Not long ago, the lithium vanadium phosphate battery passed the acupuncture safety inspection by the Chemical and Physical Power Product Quality Supervision and Inspection Center of the Ministry of Industry and Information Technology. During acupuncture, the battery did not explode or burn. After the acupuncture test, the battery remained intact and showed good safety. Tang Zhiyuan said that the needle test uses a large steel needle in the battery, and the battery working environment directly enters the artificially formed instantaneous short circuit. The imitation is that the new energy vehicle is suddenly affected by violence under the condition of the rod, and the battery has received serious damage. Because the most extreme battery is damaged. In this case, many currently used batteries will burn or explode due to the rapid heat generation, but lithium vanadium phosphate batteries will only evaporate the electrolyte and emit fine white smoke, which is not a safety issue. In terms of capacity, compared with commonly used car batteries, the unit component capacity of lithium vanadium phosphate batteries has increased by about 26%, and it is expected to increase to about 40%-60% in the future. In addition, the lithium vanadium phosphate battery has an outstanding feature, that is, its low temperature function is very good. At present, serious aging of batteries in low-temperature environments is a major problem encountered by new energy vehicles, especially pure electric vehicles. A typical example is the number of pure electric vehicles. Their cruising range is about 200 kilometers, but in the severe winter in the north, the actual cruising range after a full charge may be only more than 100 kilometers, and the aging of the battery is also very serious. Lithium vanadium phosphate batteries are different. According to national standards, car batteries can release 70% of their energy under environmental conditions of minus 20 degrees Celsius, which is qualified. It is known that this battery is tested by the Physical and Chemical Power Product Quality Supervision and Inspection Center of the Ministry of Industry and Information Technology, and can release 81% of its electricity under environmental conditions of minus 30 degrees Celsius. Mr. Tang said that similar products can only produce 30% to 40% of electricity at a temperature of minus 30 degrees Celsius. In addition, the high-temperature discharge function of this battery is also very good. Through the test, under the above zero 55 degrees Celsius environmental conditions, 93% of the cost can be released, which greatly reduces the endurance travel and other aspects of the electric vehicle due to changes in the temperature environment. influences. The expert committee believes that the technology has significantly improved the thermal stability, safety and cycle life of the battery, and has made excellent progress in improving the low-temperature discharge function of the battery, reaching the advanced level at home and abroad. According to analysis, batteries can be widely used in power tools, electric vehicles, aerospace and military processing, and various fields of people's lives. At present, the products prepared with this technology have passed the pilot test and are expected to be put into processing before the end of this year. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: How to prevent the self-discharge of electric vehicle batteries?