Lithium Battery Knowledge
Lithium iron phosphate battery refers to a lithium ion battery that uses lithium iron phosphate as a positive electrode material. The cathode materials of lithium-ion batteries mainly include lithium cobalt oxide, lithium manganate, lithium nickel oxide, ternary materials, lithium iron phosphate, etc. Among them, lithium cobalt oxide is the cathode material used in the vast majority of lithium-ion batteries. In terms of material principle, lithium iron phosphate is also an intercalation and deintercalation process, which is exactly the same as lithium cobaltate and lithium manganate.
When many materials in a lithium battery come into contact with water, a violent chemical reaction occurs, releasing a large amount of thermal energy, which generates heat and burns. The manganese dioxide in the positive electrode of a lithium battery can generate heat with just a small drop of water. When the sulfurous chloride in the lithium battery comes into contact with water, it releases heat energy and produces hydrochloric acid and sulfur dioxide at the same time. If the temperature is too high, it is not normal. The reasons may be as follows:
In daily life, some wrong behaviors are easy to become habits, and over time, various problems will appear, such as the incident of "forgetting to unplug the charger and burning the house". There are actually many misunderstandings about the fact that we have to charge our mobile phones every day. Maybe 99% of people use the wrong method to charge their mobile phones every day. Come and see if you are.
Lithium battery equipment is mainly used in each process link of lithium battery production process. Lithium battery materials are mainly composed of four materials: positive electrode material, negative electrode material, separator and electrolyte, in addition to packaging and other parts. Lithium battery equipment is the necessary equipment and infrastructure for the lithium battery manufacturing industry.
Which is better, graphene battery or lithium-ion battery? The difference between graphene batteries and lithium batteries
Battery technology is the biggest threshold for the vigorous promotion and development of electric vehicles, and the battery industry is at a stage where the development of lead-acid batteries and traditional lithium batteries is at a bottleneck. The battery industry and even the electric vehicle industry have brought new changes. So which is better, graphene battery or lithium-ion battery? What is the difference between graphene batteries and lithium batteries?
Which is better, 18650 lithium battery or 26650 lithium battery? The difference between 18650 and 26650 lithium-ion batteries?
Lithium-ion batteries have the advantages of light weight, large capacity, and no memory effect, so they are widely used. Many digital devices use lithium-ion batteries as power sources, although their prices 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 wide application. There are also many types of lithium batteries. This article compares the two types of lithium batteries: 18650 lithium battery and 26650 lithium battery.
There are two main types of rechargeable batteries on the market: nickel-metal hydride batteries and lithium-ion batteries, and the problem that people are concerned about whether the batteries cannot be charged is mostly for these two types. Batteries of the same type and specification can be connected in parallel, in series and in combination to form assembled batteries with different numbers of cells. As a common phenomenon, people want to understand the reasons behind the failure of batteries and battery packs to charge and seek solutions.
Lithium-ion battery or NiMH battery which is better? The difference between lithium-ion batteries and nickel-metal hydride batteries
Nickel-metal hydride batteries and lithium-ion batteries are widely used in the market. They are non-polluting and environmentally friendly batteries and are important areas for new energy development. So which is better, Ni-MH battery or Li-ion battery?
In order to effectively improve the storage capacity of lithium batteries, people generally adopt the method of increasing the battery capacity to achieve the purpose. However, limited by the nature of the raw materials used, the increase in capacity is always limited, so increasing the voltage value has become another way to improve the power storage capacity of lithium batteries. As we all know, the nominal voltage of lithium battery is 3.6V or 3.7V, and the maximum voltage is 4.2V. So, why can't the voltage of lithium batteries get a bigger breakthrough? In the final analysis, this is also determined by the material and structural properties of lithium batteries.
The performance test of lithium battery mainly includes voltage, internal resistance, capacity, internal pressure, self-discharge rate, cycle life, sealing performance, safety performance, storage performance, appearance, etc. Others include overcharge, overdischarge, weldability, corrosion resistance sex, etc