Technical Knowledge

According to foreign media reports, Toyota Motor Group said it plans to develop a more advanced electric vehicle battery in the next few years to help its vehicles increase cruising range by 15% and prolong battery life. Hisao Yamashige, a researcher in battery technology at Toyota, said: "Lithium-ion batteries are the focus of vehicle electrification, and we want to go one step further: improve technology and improve performance." Improving lithium-ion battery performance is a concern for all EV ma

Scientists at the University of Bristol in the United Kingdom have recently used nuclear waste to create a new type of man-made diamond battery. This radioactive diamond battery has a service life of more than 5,000 years. The British already had 95,000 tons of graphite blocks. They collected radioactive "carbon-14" from this nuclear waste to make diamond batteries. According to the researchers, a diamond battery produced in 2016 can take 7746 years to use up half of its energy. Sina Technology News

1. Analysis of flow battery Recently, nanoFLOWCELL, an electric vehicle brand from Liechtenstein, announced the new QUANT48Volt concept sports car, using the latest low-voltage flow battery technology, the maximum power will reach 762 horsepower, the maximum speed of 300km/h, 0-100km/h acceleration 2.4s, the maximum cruising range or Over 1000km. I believe everyone is used to this kind of news, but in fact, for us ordinary consumers, this kind of "surreal concept car" is still far away from us, and th

A Canadian battery research team led by Tesla battery expert Jeff Dahn is about to break through the energy density barrier of a new, next-generation battery. The team recently published the discovery in a new paper, Resolving Anode-Free Battery Defects with Electrolyte Solutions. After breaking this barrier, the energy density of next-generation battery cells is expected to reach revolutionary and unprecedented heights. According to the paper, "Diagnosing and Correcting Anode-Free Battery Failure Through E

The materials of lithium-ion battery packs are mainly composed of positive electrode, negative electrode, electrolyte, separator and outer shell. ① Positive electrode material---The positive electrode material accounts for 30%--40% of the cost of the lithium-ion battery. The performance of the positive electrode material directly affects the performance of the lithium-ion battery, and its cost also directly determines the cost of the battery. Using a carbon electrode that can absorb lithium ions, during discharg

In the next few years, driven by the rise of the global lithium-ion battery market, the global lithium-ion battery copper foil market will continue to grow rapidly. GGII expects a compound growth rate of 24% in the next four years, and the output will exceed 200,000 tons by 2020. ① Important countries in the world vigorously develop the new energy vehicle industry, and the demand for lithium battery copper foil for power lithium batteries will maintain a high upward trend, becoming an important application marke

1. Lithium primary battery Lithium primary batteries have very low self-discharge and can be stored for 3 years. The effect will be better when stored under refrigeration. It is a good idea to store lithium primary batteries in a low temperature place. 2. Lithium-ion battery Also called secondary lithium-ion battery. It can be stored for more than half a year at 20°C due to its low self-discharge rate and most of the capacity can be recovered. Lithium-ion batteries that have been stored for a long time sho

1. Charging 1-1 Charging current: The charging current shall not exceed the maximum charging current specified in the specification (generally 0.5~1.0C or below), and using a charging current higher than the recommended current may cause the charging and discharging performance, mechanical performance and safety of the battery. performance issues and may cause heat or leaks. At present, the 5C current charging model aircraft battery sold in the market is not recommended to use 5C charging frequently, so as not t

The negative electrode material of lithium titanate battery has the advantages of small size, light weight, high energy density, good sealing performance, no leakage, no memory effect, low self-discharge rate, rapid charge and discharge, long cycle life, wide working environment temperature range, safety It has the characteristics of stable green environmental protection and so on, so it has a very wide application prospect in the field of communication power supply. Lithium titanate battery can be used safely i