The analysis of cylindrical lithium-ion battery types and specifications

Source: 2020 - 04 - 20 hits: young man, cylindrical lithium-ion battery type and specification is what? Lithium battery packaging mainly has three kinds: cylindrical, square and flexible packaging. Cylindrical lithium-ion battery has a lot of kinds, such as 14650, 17490, 18650, 21700, 26650, etc. Cylindrical lithium-ion battery of lithium battery companies in Japan and South Korea are very popular. What is the type of cylindrical lithium-ion batteries and specification? Cylindrical lithium-ion battery model cylindrical lithium-ion batteries are divided into lithium cobalt acid lithium, lithium manganese acid lithium materials, three yuan. Three kinds of cells each have advantages, widely used in notebook computers, digital cameras, lighting, toys, power tools, portable power and other fields. 1. 10440 10440 battery is 10 mm in diameter, height of 44 mm lithium battery. Its size and 'no' is the same. We usually call it the battery. Such as a flashlight, mini audio, amplifiers, etc. 2. 14500 battery 14500 14 mm in diameter and 50 mm high lithium battery, we were called the 'battery' 5 size, battery is 3. 7 V and 3. 2 V, rated capacity is small, slightly larger than 10440 batteries, generally is 1600 mah, discharge performance is superior, the main application field of consumer electronics products, such as wireless audio, electric toys, digital camera, etc. 3. 16340 16340 battery is a 16 mm diameter, height is 34 mm of lithium battery. The battery because the height of the ruler is shorter, capacity is not small, so often appear in the flashlight, LED flashlight, head lights, laser lights, lights, etc. 4. 18650 18650 battery is an 18 mm in diameter, height is 65 mm of lithium battery, its biggest characteristic is has a very high energy density, reached almost 170 watts/kg, so the battery performance is very good, we often see most at ordinary times is the battery, because it is a relatively mature lithium-ion batteries, the stability of the system in all aspects of good quality and is widely used in about 10 KWH battery capacity situation, for example, in mobile phones, laptops and other small appliances. 5. 21700 21700 battery is 21 mm diameter, height is 70 mm of lithium battery, because of its size, space utilization, energy density, battery monomer as well as the system can be improved, the volume of its energy density is much higher than 18650 type batteries, widely used in digital, electric cars, balance, solar car lights, LED lights, electric tools such as lithium-ion batteries. The structure characteristics of cylindrical lithium-ion batteries, 1) Ordinary cylindrical lithium-ion batteries by shell, hats, the positive and negative, of the diaphragm and the electrolyte. Generally speaking, the battery shell is battery cathode, battery cover is the anode of the battery. ( 2) Dynamic cylindrical lithium-ion battery electrical connection structure of the main difference is that the battery, because the general application of power battery large current, so you need to specifically designed for large current structure. To facilitate the connection, in the original cylindrical lithium-ion battery structure, on the basis of a special combination of connection device is designed. More mature coiling technology on cylindrical lithium-ion battery, a high degree of automation, product quality is stable, relatively low cost. The advantages of cylindrical lithium-ion battery cylindrical lithium-ion batteries have formed a series of international standard specifications and models, technology is mature, suitable for continuous production in bulk. Cylinder is greater than surface area, good heat dissipation effect. Cylindrical lithium-ion battery is usually sealed battery, does not exist in the process of using maintenance problems. Lithium battery casing pressure is high, in use process won't appear such as square, flexible packaging cell expansion.