CBAK Energy Technology Inc (CBAT)

[Keystoner]

The company’s most significant partnership to date, however, was announced in September with Shenzen BAK Battery Company, one of the world’s largest lithium ion battery manufacturers. The companies announced BAK would begin mass producing batteries based on Cadenza’s supercell architecture in the first half of 2019.

Tesla famously achieves longer vehicle ranges by using small jelly rolls in its batteries, addressing safety issues with cooling tubes, intricate circuitry, and by spacing out each roll. But Cadenza has patented a simpler battery system it calls the “supercell,” that allows small jelly rolls to be tightly packed together into one module.

The key to the supercell is a noncombustible ceramic fiber material that each jelly roll sits in like an egg in a carton. The material helps to control temperature throughout the cell and isolate damage caused by an overheated jelly roll. A metal shunt wrapped around each jelly roll and a flame retardant layer of the supercell wall that relieves pressure in the case of a thermal event add to its safety advantages.

https://news.mit.edu/2018/cadenza-innovation-supercell-battery-1107