Page 42: of Marine Technology Magazine (September 2023)

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Subsea Bat eries 100

Source: Electrochem Source: RBR Global

Electrochem Solutions produces lithium-oxyhalide batteries, a type of lithium primary battery that use a lithium metal anode and a liquid cathode that doubles as the electrolyte.

RBR has deployed its RBRfermata battery canister and its RBRcervata deployment extender into deep-sea earthquake and tsunami monitoring systems.

RS Aqua’s batteries were recently put on SEABER’s YUCO micro-ROV when it successfully crossed the English

Channel in less than eight hours.

Source: SEABER FR

Verlume’s intelligent energy management system, Axonn, was designed for Aker Solutions as a completely wireless can deliver a constant output of power from renewable sources and self-powered tool for tubing hanger installation on sub- to support offshore decarbonization projects and minimize en- sea oil wells.

ergy loss from electricity generated from offshore wind. The deep sea can experience near-zero temperatures that can

Power management system advancements are key, but Ver- signi? cantly reduce batteries’ rated performance. Available lume’s CTO, Paul Slorach, says the company is also continu- space is limited such that overall battery pack capacity may ally improving the energy density of its systems. Most re- be dictated by the pressure vessel size required to withstand cently, that has involved a new module design, but he is also the design depth. A.G.O. balanced these challenges by design- keeping an eye on the developments in the electric vehicle ing titanium pressure cases with nickel-metal hydride (NiMH) market and exploring new battery chemistries. batteries. These batteries are rechargeable with a long life and

One of A.G.O. Environmental Electronics’s latest proj- offer the highest energy density by volume of all standard ects involved designing a set of large battery packs to supply non-lithium-based battery chemistries. They are also rated 172V with 21Ah capacity at up to 3,000m depth for subsea for operation at near-zero temperatures with minimal perfor- technology company Envirex’s SWIFT project. The system mance reductions. 42 September/October 2023

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