Battery Manufactory

In the structure of lithium batteries, the diaphragm is one of the key internal components. The performance of the lithium battery separator determines the battery's interface structure, internal resistance, etc., which directly affect the battery's capacity, cycle and safety performance. A separator with excellent performance plays an important role in improving the overall performance of the battery. What is a lithium battery separator? The lithium battery separator is located between the positive and negative electrodes, and its main function is to separate the positive and negative active materials to prevent the two electrodes from being short-circuited due to contact; in addition, during the electrochemical reaction, it can maintain the necessary electrolyte to form a channel for ion movement . The diaphragm material is non-conductive, and different types of lithium batteries use different diaphragms. What are the constituent materials of lithium battery se

The lithium cobalt oxide battery has a stable structure, high specific capacity, outstanding comprehensive performance, but poor safety and high cost. Mainly used for small and medium batteries, the nominal voltage of the battery is 3.7V. Regarding the safety performance analysis of lithium cobalt oxide batteries, we will explain in detail through the safety comparison of nickel manganate, lithium iron phosphate, lithium cobalt oxide and lithium manganate batteries: 1. Lithium nickel cobalt manganese oxide battery The actual available theoretical ratio has been greatly improved. Compared with lithium cobalt oxide batteries, it can play a higher capacity role better, but from the material point of view, the ternary battery uses lithium nickel cobalt manganese oxide and organic electrolyte, which has not fundamentally solved the safety problem. If the battery is short-circuited, excessive current will be generated, causing safety hazards. 2. Lithium iron phosphate battery

Lithium battery electrolyte is the carrier of ion transmission in the battery. Generally composed of lithium salt and organic solvent. The electrolyte plays a role in conducting ions between the positive and negative electrodes of the lithium battery, ensuring that the lithium ion battery has the advantages of high voltage and high specific energy. Electrolyte is generally prepared from raw materials such as high-purity organic solvents, electrolyte lithium salt and necessary additives in a certain proportion under certain conditions. Lithium-ion battery electrolytes are divided into two types, one is acid electrolyte and the other is alkaline electrolyte. The former is sulfuric acid and the latter is sodium hydroxide. Both are highly corrosive, and their harm is self-evident. 1. Invasion route: inhalation, ingestion, transdermal absorption. Lithium battery electrolyte is a mild stimulant and anesthetic. Inhalation can cause headache, dizziness, weakness, nausea and br

1. Lithium-ion battery type and capacity selection First, calculate the continuous current to be provided by the battery according to the power of your motor (the actual power is required, and the general riding speed will correspond to the corresponding actual power). For example, if the continuous current of the motor is 20A (1000w at 48V), the battery must be able to provide 20A for a long time and the temperature rise is very low (even if the outdoor temperature in summer is 35°C, the battery temperature is best controlled below 50°C). In addition, if the current is 20A at 48V, the overvoltage is doubled (96V, such as ecpu3), and the current continues to about 50A. If you like to use overvoltage for a long time, please choose a battery that can continuously provide 50A current (also pay attention to the temperature rise). The continuous current of the battery here is not the nominal battery discharge capacity of the merchant. The merchant claims that a few C (or a few

Many times, when people go out, they will encounter the situation that the mobile phone is out of power and forget to bring the power bank and charger, which brings certain inconvenience to life. If there is such a piece of clothing, it looks no different from ordinary clothes, but it can wirelessly charge mobile phones and other electronic devices. Isn’t it exciting? Recently, researchers from Fudan University have developed a wearable battery fabric that can not only wirelessly charge mobile phones, but also provide sufficient energy for smart fibers that monitor human health data. Moreover, after repeated washing and folding, it can still maintain stable electrochemical and mechanical properties. The classic plane coating method is difficult to apply to high-curvature fibers, because when the fiber surface is coated, uneven coating such as beads is easily generated on the surface, which seriously affects the continuity and electrochemical performance of the fiber ele

Polymer lithium ion batteries can be divided into three categories: 1. Solid polymer electrolyte lithium ion battery. The electrolyte is a mixture of polymer and salt. This battery has low ion conductivity at room temperature and is suitable for high temperature use. 2. Gel polymer electrolyte lithium ion battery. That is, additives such as plasticizers are added to the solid polymer electrolyte to increase the ionic conductivity and enable the battery to be used at room temperature. 3. Lithium-ion battery with polymer cathode material. Using conductive polymer as the positive electrode material, its energy is three times that of existing lithium-ion batteries , which is the latest generation of lithium-ion batteries. Due to the use of solid electrolytes instead of liquid electrolytes, compared with liquid lithium-ion batteries, polymer lithium-ion batteries have the advantages of being thinner, arbitrarily large, and arbitrarily shaped, and will not cause leakage, co

Classified by battery shape : the first category, cylindrical lithium-ion batteries. At present, there are mainly two models of 18650 (diameter 18 mm, length 65 mm) and 26650 (diameter 26 mm, length 50 mm), which are mainly used for notebooks and power tools. The second type is a prismatic lithium-ion battery. There are many kinds of this kind, so I won't go into details, mainly used in mobile phones, digital cameras, etc. The third type is button lithium-ion batteries. The shape is the same as the buttons, round and thin, which can meet the high specific capacity and thinness requirements of computers and cameras.   Classified by working temperature : the first category, high temperature lithium ion batteries. It can be used normally at a certain high temperature (below 60°C). Mainly used in aerospace and other fields. The civilian category is mainly car GPS. The second is a normal temperature power lithium-ion battery. At present, commercial lithium-ion batteries