The Chinese battery group CATL has just presented its development plans for cell-to-pack batteries at the IAA in Germany. The new CTP platform is designed to improve the development of battery sets with a pack’s energy density to increase from 180 Wh/kg to 200 Wh/kg.
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The key data for CTP technology is as follows: CATL aims to increase mass-related energy density by 10 to 15 per cent, and for volume-related usage efficiency, the company reports an improvement of 15 to 20 per cent. This means that more energy can be stored in the same battery space, while the whole battery has also become lighter. The has taken on the task of using 40 per cent fewer components.
In terms of a battery pack, these improvements mean an energy density of 200 Wh/kg instead of the current 180 Wh/kg. At the battery cell level, CATL has already achieved an energy density of 240 Wh/kg. The company’s target for 2024 is an energy density of 350 Wh/kg – although they have not specified whether this is the energy density of a battery pack or a battery cell. The Chinese battery giant has not revealed when they will start delivering batteries with CTP technology to customers.
“It is an exciting time to be solidifying our standing within Europe’s dynamic and fast-moving e-mobility sector, and at CATL we embrace every opportunity to connect with OEMs in the region to better understand their needs and walk them through our solutions,” said Matthias Zentgraf Europe President, CATL. In addition to the new CTP platform, the battery manufacturer will also be showing other products at the trade fair, such as NMC (nickel manganese cobalt) and LFP (lithium iron phosphate) batteries.
The Chinese battery experts will be giving a series of technical workshops at the IAA. The manufacturer will also provide insights into the company’s latest battery solutions for electric vehicles, the design of battery management systems and intelligent manufacturing processes.
Update 30 September 2019: Shortly after CATL presented its development plans for cell-to-pack batteries at the IAA, CATL and BAIC’s electric subsidiary BJEV have now jointly unveiled the world’s first cell-to-pack (CTP) battery pack. The first model to use the battery is the BAIC EU5, the most successful plug-in model produced in China from January to August.
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