How to classify lithium batteries?

A lithium battery is a rechargeable battery whose working principle is that lithium ions move between the positive electrode and the negative electrode. During charging and discharging, Li+ intercalates and deintercalates back and forth between the two electrodes. In rechargeable batteries, lithium ions are extracted from the positive electrode and inserted into the negative electrode through the electrolyte. The negative electrode is in a state rich in lithium. When unloading, the situation is just the opposite. Generally speaking, batteries with lithium as the electrode are representative of modern high-performance batteries. Lithium batteries are divided into lithium batteries and lithium batteries. Both mobile phones and notebook computers use lithium batteries, which are commonly referred to as lithium batteries, which are very dangerous and are rarely used in daily electronic products. Lithium batteries generally use graphite-like carbon as the negative electrode. Lithium batteries are a development of lithium batteries. Before we talk about lithium ion, let's talk about lithium batteries. For example, the button battery used in the camera is a lithium battery. The positive electrode of a lithium battery is manganese dioxide or thionyl chloride, and the negative electrode is lithium. After the battery is packaged, the battery will have voltage and does not need to be charged. This kind of battery can also be charged, but the cycle performance is not good. Lithium crystals are easily formed during the charge-discharge cycle, causing internal short circuit of the battery. Therefore, charging of this battery is generally prohibited. Carbon lithium battery Later, Sony invented a lithium battery with carbon material as the negative electrode and lithium-containing compound as the positive electrode. During the charging and discharging process, there is no metallic lithium, only lithium ions. This is a lithium battery. The battery capacity we usually call the rocking chair battery refers to the discharge capacity. During the charging and discharging process of lithium ions, the lithium ions are in a state of movement from the positive electrode to the negative electrode and then to the positive electrode. The lithium battery is like a rocking chair, the two poles of the battery, and the lithium ion moves back and forth like an athlete. Therefore, lithium batteries are also called rocking chair batteries. Important lithium batteries can be divided into liquid lithium batteries (LIB) and polymer lithium batteries (PLB) according to the electrolyte materials used. Lithium batteries (lithium-ion) rechargeable lithium batteries are widely used in modern electronic products such as mobile phones and notebook computers, but they are relatively fragile and cannot be overcharged or over-discharged during use (they can damage the battery or cause the battery to fail). Therefore, there are protective components or protective circuits for batteries to prevent damage to expensive batteries. Lithium battery charging requirements are very high. In order to ensure that the terminal voltage accuracy is within ±1%, important semiconductor device factories have developed a variety of lithium battery charging ICs to ensure safe, reliable, and fast charging. Mobile phones are mainly powered by lithium batteries. Proper use of lithium batteries is of great significance to extend battery life. According to the requirements of different electronic products, it can be made into plane rectangle, cylinder, rectangle, button and other shapes, and there are multiple batteries in series and parallel to form a battery pack. Due to changes in materials, the rated voltage of lithium batteries is generally 3.7V, while the positive electrode of lithium iron phosphate (hereinafter referred to as iron phosphate) is 3.2V. When fully charged, the terminal charging voltage is generally 4.2v and 3.65v. The termination discharge voltage of lithium batteries is 2.75v~3.0v (the operating voltage range or termination discharge voltage given by the battery manufacturer, each parameter is slightly different, generally 3.0v, phosphorus, iron 2.5v). Discharge below 2.5V (2.0V ferrophosphorus) is called overdischarge and will damage the battery. Lithium batteries using lithium cobalt oxide cathode materials are not suitable for high-current discharge. Overcurrent discharge will shorten the discharge time (internal temperature rise, energy loss) and may cause danger. The lithium iron phosphate cathode material lithium battery can be charged and discharged with a large current of 20C or greater (C is the capacity of the battery, such as Cu003d800mAh, 1C charging rate, that is, the charging current is 800mA), which is particularly suitable for electric vehicles. Therefore, the large discharge current given by the battery manufacturer should be less than the large discharge current being used. Lithium batteries have certain requirements for temperature. The factory provides charging temperature range, discharging temperature range, and storage temperature range. 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: Explain the maintenance methods of lithium batteries