21700 the four advantages of lithium battery is introduced

Source: 2020 - 03 - All clicks: 30 four advantages: 1. Battery capacity increased by 35%. Tesla production of 21700 pieces of batteries, for example. Type type conversion from 18650 to 21700, after a single battery capacity can reach 3 ~ 4. 8 ah, significantly increased by 35%. 2. Battery energy density has increased by about 20%. According to data released by the tesla, the early use of 18650 battery energy density is about 250 wh/kg, the late production of 21700 battery energy density of about 300 wh/kg. The volume of 21700 battery energy density than the original 18650 nearly 20% higher than that of the battery. 3. The system is expected to reduce the cost of about 9%. According to the information analysis released tesla battery price, 21700 battery power lithium battery system price is $170 / Wh, and price is $185 / Wh 18650 battery system. Using only model on 3 21700 batteries, battery system cost can be reduced by about 9%. 4. The system component is expected to reduce 10%. The total capacity of 21700 more than 18650. With the increase of capacity of monomer, monomer energy density increases. Therefore, under the same energy battery monomer amount can reduce about one-third as needed. When SDI switch to a new 21700 pieces of battery, it is found that the weight of the system was 10% lighter than the current system. It insists on the high reliability and stability of the battery, 18650 21700 cell function in all aspects than 18650 had the very big enhancement. In addition, compared with other types of batteries, 21700 battery on raw materials selection, manufacturing process and process similar to more complex 18650 battery. As a result, most of the 18650 s and 21700 production lines can be compatible, some businesses safer way is to do something on the production line, 21700 and 18650 production lines are closer to the compatible. Can pursue ratio has become an irreversible trend power battery, many battery company began to focus on the layout of the 21700 pieces of batteries. Some companies imported production lines from abroad, but his assembly, so they can use less capital transformation from 18650 to 21700.