In 2019, CATL introduced the world a cell that packs technology with 55% volumetric efficiency. This week, the company announced a new Qilin (formerly Kirin) battery pack that boasts 72% volumetric efficiency. The energy density is said to be 255Wh / kg, which is 13% higher than the energy density of Tesla’s latest 4680 cells. We can continue with the general goodness of the Qilin battery, but CATL has kindly created a video that explains it pretty well.
Kirin is the name of a creature in Chinese mythology, Yahoo Finance.. The new battery is said to charge faster than any previous battery manufactured by CATL and move further on a single charge. According to the company, a car with a new battery can travel more than 1000km on a single charge. (Of course, it all depends on the size of the battery pack and the aerodynamic efficiency of the car.)
according to CnEVPost, CATL has quadrupled the heat transfer area by instead placing a liquid cooling element (usually at the bottom of the battery cell) between the cells. This allows for shorter charging times, better heat control of cell temperature, faster battery cell warm-up in cold weather, and improved performance.
The new design supports fast hot start in 5 minutes and can charge up to 80% in 10 minutes, CATL says. In extreme conditions, cells can be cooled rapidly to effectively block abnormal heat transfer between cells and reduce the possibility of thermal runaway events (fire, non-technical type).
In addition, according to CATL, the integrated energy pack, which consists of a battery cell and a multifunctional elastic sandwich layer, builds a more stable force structure in the direction perpendicular to the direction of movement, improving the structural strength and impact resistance of the battery pack. Let me.
Since CATL supplies batteries to most of the major automakers in China and around the world, the Qilin Battery Pack may enter the production of cars starting next year. At this time, there is no official word that the company has signed up to use CATL’s new battery pack. What is known is that CATL is investigating a US site to build the first battery factory in North America. It is the world’s largest battery supplier and will stay there.
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