Tesla Inc may feel a little angry with Contemporary Amperex Technology Co Ltd (CATL), the world’s largest manufacturer of electric vehicle batteries. The Chinese company supplies most of the batteries for EVs produced at Tesla’s Gigafactory in Shanghai. CATL has a bond until 2025 with Tesla to supply battery to Tesla.
But Korean battery companies like LG Energy Solutions and Samsung SDI are investing considerable amounts in building an assembly line to manufacture Tesla’s unique 4680 cylindrical batteries. And Tesla itself has plans to halve the costs of the most expensive part of an EV by producing its own batteries.
Amidst all this action, CATL unveiled an electric car battery that it said has a range of over 1,000 kilometers on a single charge and is 13% more powerful than what Tesla planned.
Named the Qilin (a legendary creature in Chinese mythology), the battery sets, according to the company’s claim, a new record for volume-based usage efficiency by over 72 percent. That is, 72% of the battery ready for installation is filled with cells. When CATL introduced the first generation of cell-to-pack (CTP) technology in 2019, the volume usage efficiency was 50%. The new battery has an energy density of up to 255 Wh/kg, capable of providing a range of over 1,000 km in an instant.
“With the same chemistry and the same pack size, it can deliver 13% more power than the 4680 battery, achieving an overall improvement in range, fast charging, safety, lifespan, efficiency and low-temperature performance,” he said. the company.
What is the new CATL battery
CATL said that in the CTP 3.0 battery, the inner crossbar, liquid cooling plate and thermal pad have been integrated into a multifunctional elastic interlayer. “The integrated power unit, which is composed of the cell and the multifunctional elastic interlayer, creates a more stable load-bearing structure perpendicular to the driving direction, thus increasing the battery’s shock and vibration resistance.”
The battery-bottom-sharing design allows for the intelligent arrangement of multiple components, including structural protection, high voltage connection, and a protective vent for thermal runaway, further increasing battery capacity by 6%.
CATL claimed that the new battery has a ‘disruptive water-cooled design’, in which functional liquid-cooled parts are placed between adjacent cells. This increases the heat transfer area by four times, cuts the thermal control time in half, and supports a hot start in 5 minutes and fast charging in 10 minutes. ‘It allows the cell to cool rapidly under extreme circumstances, effectively preventing abnormal thermal conduction between cells.’
CTP 3.0, or Qilin, batteries are expected to hit the market in 2023.