Lithium-ion batteries are the most commonly used energy storage devices They are widely used in smart phones, laptops and electric vehicles because of their portability, environmental friendliness and high energy density.

Mechanical properties(1) Extrusion: Place the single cell in the middle of two extrusion planes and gradually increase the pressure to 13 kN The extrusion direction of the cylindrical cell is perpendicular to the longitudinal axis of the cylindrical axis.

Recently, the Shenzhen Stock Exchange sent a letter of inquiry to BYD, requesting it to explain the financial problems, operation and R&D situation in the 2017 annual report In the inquiry letter, BYD was asked to explain whether the product structure of power battery in BYD could adapt to the development trend of the industry by combining the research and development of lithium iron phosphate batteries and ternary batteries in BYD.

BMW announced a patent agreement on low-temperature lithium-ion battery technology and ECPower to jointly develop battery technology to increase the temperature of vehicle-mounted batteries It is known that this technology can realize rapid charging of electric vehicles in low-temperature environment without using external power supply.

With the rapid development of new energy automobile market, the demand for power batteries is increasing In this context, a number of listed companies have accelerated the layout of solid-state lithium batteries.

Step 1 -- Preparation of electrode slurryIt is mainly mixed with electrode active materials, binders, solvents, etc, and fully stirred and dispersed to form a slurry.

The difference between lithium ion batteries compared and other batteryCompared with nickel metal hydride batteries, lithium ion battery charging and discharging voltage is higher, is about 3 times of Ni-Mh batteries, 37 V, and Ni-Mh battery charging and discharging voltage of 1.

China's new energy policy has attracted global attention in recent years, the Financial Times reported And China is becoming the dominant market in the fiercely competitive market for lithium-ion batteries.

Technavio, an international market research institute, recently reported that the global lithium-sulfur battery market will grow at a compound annual rate of more than 71% between 2018 and 2022 Restraining lead pollution and strict laws are the main factors to promote market growth.

Researchers from Stanford University in the United States have used artificial intelligence and machine learning to find about 21 solid electrolyte materials, hopefully to completely solve the lithium battery explosion problemRecently, researchers from Stanford University published their latest research results in the Journal Energy and Environmental Sciences.