Analyze the types of lithium batteries

Which types of lithium batteries? At present, there are two important secondary batteries: Ni-MH batteries and lithium batteries. Lithium batteries have been batch processed liquid lithium batteries (LiB) and polymer lithium batteries (Lip). So in many cases, the battery with lithium ion must be a lithium battery. But it is not necessarily a liquid lithium battery, it can be a polymer lithium battery. Polymer lithium battery 1. According to the different classification of electrolyte materials used in lithium battery, it can be divided into liquid lithium battery (lithiumion battery) and polymer lithium battery (LIP). The positive and negative materials of polymer lithium batteries are the same as those of liquid lithium, and the working principle of the battery is the same. The important difference lies in the electrolyte. Lithium batteries use liquid electrolytes, while lithium polymer batteries use solid polymer electrolytes, which can be dry or gel. Polymer lithium batteries can be divided into three categories: (1) Solid polymer electrolyte lithium batteries. The electrolyte is a mixture of polymer and salt. The battery has low ionic conductivity at room temperature and is suitable for use at high temperatures. (2) Gel polymer electrolyte lithium battery. That is, additives such as plasticizers are added to the solid polymer electrolyte to increase the ionic conductivity, so that the battery can be used at room temperature. (3) Polymer anode material lithium battery. Using conductive polymer as the cathode material, its energy is three times that of existing lithium batteries (the latest generation of lithium batteries). By using solid electrolytes instead of liquid electrolytes, compared with liquid lithium batteries, lithium polymer batteries can be thinner and changeable, any area has any shape, etc., and there will be no leakage and combustion explosion safety problems, so you can use Lu Shiping The battery case made of Su composite film can increase the capacity of the battery; the polymer lithium battery can also be used as a cathode material, and the ratio of its mass to energy will be more than 50% higher than that of the current liquid lithium battery. In addition, compared with lithium batteries, the operating voltage and cycle life of polymer lithium batteries are also improved. Based on these advantages, polymer lithium batteries are called next-generation lithium batteries. 2. Classification by charging method According to the charging method, it can be divided into two categories: non-rechargeable and rechargeable. Non-rechargeable batteries are called disposable batteries. Chemical energy can only be converted into electrical energy at a time, and electrical energy cannot be reduced to chemical energy (or the reduction performance is very poor). Rechargeable batteries are called secondary batteries. It converts electrical energy into chemical energy and stores it. When it is used, it converts chemical energy into electrical energy, which is reversible. (1) There are a variety of non-rechargeable lithium batteries, currently commonly used are lithium manganese batteries, lithium thionyl chloride batteries and lithium composite batteries. (2) There are many types of rechargeable lithium batteries, such as lithium vanadium oxide batteries, lithium batteries, and newly developed lithium battery polymer batteries abroad. Rechargeable lithium battery is the most widely used battery in mobile phones, but it is relatively fragile and cannot be overcharged or overdischarged during use (it will damage the battery or make it scrapped). Therefore, there are protective components or protective circuits for batteries to prevent damage to expensive batteries. Lithium battery charging requirements are very high. It is necessary to ensure that the terminal voltage accuracy is within 1%. At present, major semiconductor device manufacturers have developed a variety of lithium battery charging ICs to ensure safe, reliable, and fast charging. 3. According to the appearance of lithium batteries, there are square lithium batteries (such as commonly used mobile phone batteries) and cylindrical lithium batteries (such as 18650, 18500, etc.). 4. According to the outsourcing materials of lithium batteries, aluminum shell lithium batteries, steel shell lithium batteries, and soft batteries are classified. 5. According to lithium batteries, they are classified into lithium cobalt acid (LiCo02) batteries, lithium manganese acid batteries, lithium iron phosphate batteries, and disposable lithium manganese batteries by positive electrode material and negative electrode material (additives). Lithium batteries are an improved product of lithium batteries. Lithium batteries have been around for a long time, but lithium is very active (remember its position on the periodic table of the elements?) Metal, it is unsafe when used, and it often burns and bursts during charging. At this time An improved lithium battery appeared, adding active ingredients that inhibit lithium (such as cobalt, manganese, etc.). Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Concepts related to lithium battery anode materials