Lithium Battery Knowledge

Many users who use laptops will have a question, "Does the laptop need to be plugged in all the time?". This article focuses on this question and talks about my own views.

With the transformation of automobile electrification, consumers' acceptance of pure electric vehicles has gradually increased, and pure electric vehicles on the market have become more and more popular, but at the same time, the shortcomings of pure electric vehicles have also been exposed.

China's leading battery companies have recently notified contracted customers to renegotiate prices, and their quotations may increase by about 20%. It is understood that the domestic battery industry will basically raise prices in a unified manner in the near future. The long-term contract signing method is still under negotiation with downstream companies next year. It can also be seen that the willingness of battery companies to increase prices this time is firm.

There are many reasons for choosing electric vehicles, but I believe that friends who choose fuel vehicles have two very important reasons: one is that fuel vehicles will not have the problem of mileage anxiety; the other is that the time cost of waiting for refueling is very low.

Saturnose, an Asian battery research and development company, announced that it will publicly release independent test results of enhanced aluminum-ion batteries, and plans to launch solid-state rechargeable aluminum-ion batteries, which will be released as soon as next year. This may be the world's first mass-produced commercial-grade aluminum-ion solid-state battery, which is expected to replace the risky lithium-ion battery.

Among all environmental factors, temperature has the greatest influence on the battery's charge and discharge performance. The electrochemical reaction at the electrode / electrolyte interface is related to the ambient temperature. The temperature rise means that the output power of the lithium ion battery will rise. The temperature also affects the transfer speed of the electrolyte. The temperature rises faster, the transfer temperature decreases, and the transfer slows down. The battery charge and discharge performance will also be affected. However, if the temperature is too high above 45 ° C, the chemical balance in the battery will be destroyed, causing side reactions.

18650 lithium battery has high energy density, so most of it is used in laptop battery. In addition, because 18650 has very good stability in work, it is widely used in various electronic fields. Commonly used in high-end glare flashlights, portable power supplies, wireless data transmitters, electric heating suits, shoe materials, portable instruments, portable lighting equipment, portable printers, industrial instruments, medical instruments, etc.

Cylindrical lithium-ion batteries are usually represented by five digits. Counting from the left, the first and second digits are the diameter of the battery, the third and fourth digits are the height of the battery, and the fifth digit represents the cylindrical shape. There are many types of cylindrical lithium batteries, the more common ones are 10400, 14500, 16340, 18650, 21700, 26650, 32650 and so on.

Cylindrical lithium batteries usually refer to cylindrical 18560 lithium batteries, which can be divided into three material systems: lithium cobalt oxide, lithium manganate, and ternary materials. Batteries are widely used in: notebook computers, digital cameras, lighting fixtures, toy products, power tools, portable mobile energy and other fields.

Everyone is familiar with ternary batteries, and its cathode material is usually nickel-cobalt-manganese or nickel-cobalt-aluminum. What kind of battery is a quaternary battery that is one yuan more expensive than a ternary battery?