Increasing battery capacity in Samsung phones inspired by electric car batteries – stacking instead of jelly rolls!

Increasing battery capacity in Samsung phones inspired by electric car batteries – stacking instead of jelly rolls!

Increasing battery capacity in Samsung phones inspired by electric car batteries – stacking instead of jelly rolls!

News unit Samsung SDI is one of the subsidiaries of Samsung and its most important product is rechargeable batteries used in IT devices. About a year ago, Samsung SDI started producing the fifth generation of batteries for electric vehicles. The difference between the fifth generation and the previous generations is that instead of using the usual “jelly roll” method, Samsung has used a new method called “stacking” in making these batteries. The advantage of this new method compared to the previous method is that the battery components are placed together in a more compact form, and as a result, the final battery – while maintaining the previous size – will have a higher capacity.

news Korean The Elec on Tuesday, April 19, 2022 (30 April 1401) with News Release claimed on its website that Samsung intends to increase the capacity of its smartphone batteries by Use stacking. It is said, if you replace the “jelly roll” method with “stacking”, you can add at least 10% to the battery capacity in smartphones. For example, consider a 5,000 mAh battery (like the Galaxy S22 Ultra battery) made using the gel roll method. If this battery – with the same dimensions – is produced in a stacking way, it can have a capacity of 5,500 mAh.

Apple uses L-shaped batteries in some of its iPhones. With this, only a volume of the battery moves towards the extra space available at the edges of the phone, but the density of the battery does not change. While the philosophy of the stacking method is to increase the density. The mechanism of this method is that battery components such as anodes and separators are placed on top of each other in a stair-step style arrangement. Battery components cannot be compactly stacked in a jelly roll manner, because successive charging and discharging naturally causes swelling, which bends and damages the electrodes. But the stacking method solves this problem and allows the dead space inside the battery to be filled.

If the stacking method is successfully implemented, in the future we will see the production of flagships with 5,500 mAh batteries from Samsung. Of course, another option for Samsung is to produce thinner phones (with the same 5,000 mAh battery) instead of increasing the battery capacity, or allocate the empty space inside the phone to other parts. It should be noted that by using the same method and making the fifth generation of electric car batteries (such as the batteries that are produced in the factory located in Poland), Samsung has increased the range of electric cars using these types of batteries while reducing production costs.

Now, the question may come to mind that if it is possible to increase the battery capacity of smartphones simply by adopting the common way of making batteries for electric cars, why didn’t Samsung do it earlier? In response, we must say that the transition from “jelly roll” to “stacking” is not as simple as turning on and off a light bulb and requires time and money. Reports indicate that Samsung plans to start the production of smartphone batteries using the stacking method at the Cheonan plant. This will require a remodel of the production line at the factory (known as the M-Line), which some sources say will require a budget of 100 billion Korean won (approximately $85 million). According to The Elec, an experimental production line in one of the Samsung factories located in Tianjin, China will also be dedicated to this work.

At the end, it should be mentioned that until now, there is no specific time frame for the production of smartphone batteries using stacking method by Samsung has not been announced and we still do not know which battery of Galaxy phones will be equipped with this technology. Of course, it seems that Samsung can produce the battery of the Galaxy S23 series with this technology. Apparently, these flagships will be introduced in the first quarter of 2023.

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