Shulou(Shulou.com)11/24 Report--

CTOnews.com Sept. 7, Samsung SDI revealed the latest progress of its 46 series battery development at the 2022 World New Energy vehicle Congress. Cui Xun, head of Samsung SDI China, said Samsung SDI will determine the final size of its battery, which is 46mm in diameter.

CTOnews.com learned that Tesla has used 4680 batteries in some of his electric vehicles, which are 46mm in diameter and 80mm in length. It has been reported that both Samsung SDI and Panasonic will be Tesla suppliers.

But in fact, Samsung is working on more than 4680 batteries, Samsung SDI is also developing 4695 and 46120 batteries, these batteries are 46mm in diameter, the same as the 4680, the difference is in height, 95mm and 120mm respectively.

Cui Xun said that the 46 series cylindrical cell developed by Samsung SDI, which has higher capacity and higher energy density, is currently in the stage of emerging product development and is expected to finalize the design and begin mass production in 2023. This is similar to the timing of competitors LG Energy Solution and Panasonic, which is expected to complete the development of its 4680 battery by 2023.

Cui Xun said that Samsung SDI's power battery solution is mainly concerned with increasing the battery energy density and shortening the fast charging time. Samsung SDI has both material and structural advantages, which can be used to increase the energy density of the battery. They will use high-nickel cathodes and silicon anodes with more than 90 per cent nickel content and an energy density of more than 520Wh / L, 78 per cent of Samsung SDI's fifth-generation prismatic batteries.

In addition to improving product capacity and power performance, Samsung SDI will further improve energy density and safety through square laminated design in terms of structure. In addition, the fast charging scheme improves the fast charging ability through high intercalation rate graphite material and optimizing the electrode structure of the ion dispersion path.

It is reported that Samsung SDI is building a 4680 battery test production line in Cheonan, South Korea, and the first batch of equipment has been ordered with a planned annual production capacity of 1 GWh. If the test goes well, Samsung SDI will mass-produce 4680 batteries at its Malaysian plant with a planned capacity of 8-12GWh. SDI is already building a second factory there.

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