Samsung SDI: 46xx Batteries Efficiency Goal Achieved Earlier Than Deliberate

Samsung SDI, one of many world’s largest EV battery producers, continues to broaden its battery enterprise in the course of the first half of 2023.

Our consideration was caught by the current quarterly report, during which the South Korean producer talked about solid-state batteries (SSB) and 46xx-type cylindrical battery cells (a diameter of 46 mm and unspecified top), as the long run development engines.

That is an fascinating factor. We all know that Samsung SDI has been working onerous on the big cylindrical battery cells for fairly a while (the earliest unofficial experiences emerged in 2022 – in Could, in June, and in September).

The corporate particularly wrote “line setup” in regard to SSB and 46xx batteries so we all know that preparations are underway. Let’s recall that the present lineup of Samsung SDI batteries consists of varied sorts of cylindrical cells (1865, 2170) in addition to pouch and prismatic ones.

Using the “46Φ” signal within the presentation signifies that Samsung SDI is engaged on a number of variations (top) of battery cells with 46 mm diameter for varied clients (which might help the sooner rumors). For reference, Tesla is utilizing 4680-type cells (the peak is 80 mm), whereas BMW introduced two sorts: 4695 and 46120.


Some of the fascinating issues is that, in response to the corporate, the 46xx batteries achieved goal efficiency sooner than deliberate and Samsung SDI “began preparation of pattern for buyer.”

Nicely, it is troublesome to say what “efficiency” was achieved, however so far as batteries are thought of, crucial issues are power density, charging/discharging time, cycle life in typical temperatures and naturally prices.

If the samples are going to be despatched to clients, we should add probably at the least a number of months if no more than a yr earlier than sequence manufacturing, as there can be time wanted for exterior exams of battery packs and suggestions associated to issues that have to be ultimately corrected.


Anyway, in response to The Elec‘s unofficial sources, Samsung SDI is planning to broaden its battery manufacturing unit in Goed, Hungary to accommodate 46120-type cylindrical battery cells (a diameter of 46 mm and top of 120 mm).

This specific kind issue and site would point out that the manufacturing is envisioned for BMW, which introduced the 46120-type as one of many two sorts that can be utilized in its next-generation electrical automobiles. BMW can be constructing a brand new BEV manufacturing unit in Debrecen, Hungary. On high of that, we should keep in mind that Samsung SDI is a long-standing BMW provider of batteries (prismatic kind, since BMW i3/i8).

As a facet word, we will add that there could be a number of different clients, together with Common Motors, which signed up for unspecified cylindrical battery cells from Samsung SDI.

Nonetheless, the size of manufacturing – in response to the unofficial report – can be 10 gigawatt-hours (GWh), which isn’t a really excessive quantity (probably sufficient for BMW, assuming that CATL and EVE Vitality may even be supplying 46xx batteries in Europe).

A separate report from The Elec says that Samsung SDI-backed battery gear producer Philenergy will launch a brand new line of merchandise aimed toward 46xx-type cylindrical batteries. If we join the dots, evidently the South Korean producer is treating the brand new massive cylindrical format very significantly.