21700 battery "the enemy approached the walls" of domestic enterprises to accelerate the layout
followed by tesla, at this year's north american auto show, samsung also released a new type of 21700 batteries. the new battery's energy density is two times that of a battery, and a new battery pack can charge up to 370 miles (600 kilometers) in 20 minutes, the company said.
the new battery will drive american start-ups, including lucidmotors and ff (faradayfuture), on samsung's ppt.
followed by tesla, panasonic also includes lg chemical, almost and samsung, lg chemical also released its own 21700 batteries, is expected to be put into operation in 2020. lg chemical customers include general motors, hyundai, chrysler and lucidmotors.
as tesla led the 18650 wave of the same, the domestic 21700 battery is also full of expectations, that the 21700 batteries will be widely used in the field of new energy vehicles. led by tesla, samsung, lg, including wei wei li li, beek, tian peng, lion technology and other enterprises are actively promoting the entry of 21700 batteries.
insiders pointed out that the domestic part of the 18650 battery enterprise if the enterprise by improving the research on properties of material strength is not strong, the energy density increase is the most direct way by physical means can do a large increase in energy density. and tesla's choice of 21700 is the physical and economic comprehensive balanced results.
one is to increase energy density by at least 20%. 21700, the energy density of the battery is better than that of the 18650 battery. according to the current tesla, matsushita, samsung, lg and other information disclosure, under the existing conditions, the production system 21700 battery energy density is about 300wh/kg, than the original 18650 cell system 250wh/kg increased about 20%.
when the volume of monomer is raised, the number of parts needed for pack will be reduced in proportion, thus driving down the cost of pack. from 18650 to 21700 after the type switching type, single cell battery capacity can reach 3~4.8ah, significantly improved 35%, the required number of battery equivalent energy can be reduced by about 1/3, teslamodels electric car use section 7104 18650 battery series parallel battery group, is expected in the new model3 cell number will be significantly reduced.