HouYou Ploymer Cell Manufacturer

With the development of lithium battery technology, there are more and more types of cylindrical lithium batteries. Cylindrical lithium ion batteries are divided into lithium cobalt oxide, lithium manganate, and ternary materials. The three material system batteries have different advantages. Let's take a look at the models and specifications of cylindrical lithium batteries. Cylindrical lithium-ion batteries are usually represented by five-digit numbers. Counting from the left, the first and second digits refer to the diameter of the battery, the third and fourth digits refer to the height of the battery, and the fifth digit represents a circle. There are many types of cylindrical lithium batteries, the more common ones are 10400, 14500, 16340, 18650, 21700, 26650, 32650, etc. 1. 10440 battery The 10440 battery is a lithium-ion battery with a diameter of 10mm and a height of 44mm. It is the same size as the AA battery we often call it. The capacity of this battery...

A slight swelling of the polymer lithium battery will affect the use, reduce the battery performance, and in severe cases will burst the packaging aluminum foil, causing leakage and corrosion. Next, let's analyze the reasons for the inflation of polymer lithium batteries. 1. The cause of gas production There are two types of gas production in flexible packaging lithium-ion batteries : normal gas production and abnormal gas production. Normal gas production refers to the chemical formation process in the battery cell production process, which is accompanied by the formation of the SEI film, and is often referred to as chemical production gas. This kind of gas can generally be temporarily stored in the air bag and discharged in the subsequent process, which does not have a significant impact on the cell. Abnormal gas production means that when the air bag is removed and the packaging is completed, the amount of gas is excessive due to an abnormality inside the battery....

Lithium-ion batteries are widely used because of their light weight, large capacity, and no memory effect—many digital devices today use lithium-ion batteries as power sources, although they are relatively expensive. Lithium-ion batteries have high energy density, their capacity is 1.5 to 2 times that of nickel-metal hydride batteries of the same weight, and they have a very low self-discharge rate. In addition, lithium-ion batteries have almost no "memory effect" and the advantages of no toxic substances are also important reasons for their widespread use. Please pay attention to the safety of lithium-ion batteries . Lithium-ion batteries are prone to short circuits during charging. While most Li-ion batteries come with protection circuits against short circuits, there are also explosion proof cords. But this circuit may not necessarily be useful in various situations. The use of explosion-proof wire is also limited. So, what conditions should lithium-ion batt...

Commonly used conductive agents for lithium-ion batteries can be divided into traditional conductive agents (such as carbon black, conductive graphite, carbon fiber, etc.) and new conductive agents (such as carbon nanotubes, graphene and their mixed conductive pastes, etc.). The types of conductive agents on the market are SPUERLi, S-O, KS-6, KS-15, SFG-6, SFG-15, 350G, acetylene black (AB), Ketjen black (KB), vapor grown carbon fiber (VGCF) , carbon nanotubes (CNTs), etc. 1. Carbon black Carbon black is chain-like or grape-like under scanning electron microscope, and a single carbon black particle has a very large specific surface area (700m2/g). The high specific surface area and tight packing of carbon black particles facilitates the close contact between the particles, forming a conductive network in the electrode. The process problem caused by the larger specific surface is that it is difficult to disperse and has strong oil absorption. This requires improving the ...