Kulr, Amprius team on silicon battery cells

Kulr, Amprius team on silicon battery cells

Business news |
By Nick Flaherty

Kulr Technology Group has signed a strategic partnership deal with Amprius for silicon battery cells.

Kulr will integrate the Amprius cylindrical cell into its KULR ONE Space and Guardian battery architectures for high reliability aerospace and military applications. Amprius already has deals to supply batteries for high altitude pseudo satellites (HAPS) and eVTOL air taxis, while Kulr has worked closely with US space agency NASA.

At the heart of the partnership is the Amprius silicon-anode SA10 cells which provide a higher energy density and faster discharge capability than cells with graphite anodes. The incorporation of these cells into KULR ONE Space & Guardian reference designs will ensure a propagation-resistant structure, equipped with the necessary safety measures to meet stringent specifications for defence and space operations.

The cells will be used in upcoming standard battery models and commercialized variations of the KULR ONE Space in 100 to 400 Wh variations, using Kulr’s NASA-certified screening practices. This step meets a fundamental requirement for battery packs destined for crewed space flights, in compliance with the NASA JSC 20793 standard and for next generation military battery packs required to satisfy extensive environmental testing requirements such as MIL-STD-810H.

Working jointly with Amprius and NASA, Kulr aims to secure the essential approvals for the SA10’s use in battery packs for these missions and applications.

“The innovation encapsulated within the SA10 cell, and the agility demonstrated by Amprius align seamlessly with our commitment to serving high reliability sectors. This is an ideal strategic partnership for our KULR ONE platform utilizing their high energy density cell. Together, we are positioned to exceed the expectations of our mission-critical customers,” said Michael Mo, CEO of Kulr.

“Kulr’s unwavering dedication to safety and innovation, coupled with their ability to rapidly produce prototypes, is indispensable,” said Dr. Kang Sun, CEO of Amprius Technologies. “Kulr’s  adoption of the SiCore product line not only allows us to enter new markets with cutting-edge technology, but it also propels ongoing development for future demands.”

Kulr has also used its battery production capabilities at its newly opened plant in Webster, Texas facility to support NASA with its Firefly R5 CubeSat mission. The Realizing Rapid, Reduced-cost high-Risk Research (R5) mission is using commercial-off-the-shelf (COTS) components whenever possible for the CubeSats in low earth orbit.

A recent round of testing revealed that the battery design required a more robust electrical interconnect (busbar) to supplement the COTS nature of the design, and Kulr researchers developed a design that successfully passed additional testing.;


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