SK On said Sunday it will showcase a range of “CTP integrated package solutions” at InterBattery 2026, which runs for three days starting March 11, combining its cell-to-pack (CTP) technology with immersion-cooling fluid technology from SK Enmove, an in-house independent company.
The move reflects SK On’s plan to expand its product portfolio from supplying cells and modules to offering battery packs.
Under the theme “Unlock the Next Energy,” SK On will operate an exhibition booth featuring future technologies across three zones: Leading Tech, Core Tech and Future Tech.
In the Core Tech zone, which integrates the company’s key technologies, SK On will present three CTP package types — pouch CTP, a pouch-integrated prismatic pack, and large-area cooling CTP — along with one CMP (cell-module-pack) package solution.
The “pouch CTP,” targeted for commercial production in 2027, removes modules and integrates cells directly into the pack. SK On said it increases energy density while lowering manufacturing costs compared with existing systems. It also applies heat-transfer blocking technology to help prevent a problem in one cell from spreading to adjacent cells, improving safety.
The “pouch-integrated prismatic pack,” planned for commercial production in 2028, directly encloses mid-nickel pouch cells in a rigid aluminum prismatic case. By eliminating modules, it reduces parts and processes while improving protection against external impacts, the company said.
The “large-area cooling CTP” directly bonds an aluminum cooling plate across the broad surfaces where pouch cells contact each other, reducing the need for insulation while maximizing thermal management efficiency. SK On said it boosts cooling performance by up to three times compared with existing designs. Product verification at the battery-module level was completed last year, and commercial production is being pursued for 2028.
SK On is also introducing its CMP package solution, a cell-module-pack structure widely used in applications including electric vehicles and energy storage systems.
In the Future Tech zone, SK On displayed a model of an immersion-cooled battery pack that incorporates immersion-cooling fluid technology being jointly developed with SK Enmove. Two versions were shown, based on pouch CTP and CMP.
SK On applied the “immersion-cooled pack” to a vehicle underbody model and visually demonstrated a small immersion-cooling module submerged in cooling fluid to make the concept easier to understand.
Immersion cooling circulates an insulating fluid directly inside the pack to keep battery temperatures stable. SK On said the approach can help maintain cell performance and lifespan even in extremely cold or hot external conditions.
“Through this exhibition, we are unveiling SK On’s own CTP integrated package solutions for the first time,” an SK On official said. The official added that the company plans to continue expanding its battery product portfolio by building technology synergies with SK Enmove, including immersion cooling.
* This article has been translated by AI.
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