Specialist in underwater robotics relies on special fire protection for the storage of lithium batteries

[Translate to en_GB:] SafeStore

Founded in 2016, Kraken Power GmbH, based in Bentwisch near Rostock, develops and produces pressure-neutral batteries, drives and electronics for underwater robots, which are sold worldwide. The focus is on the development of uncomplicated and cost-effective technologies for the construction and application of mechanical, electrical and electronic systems that tolerate a hydrostatic pressure of 600 bar.

Based on this technology, Kraken Power offers various electrical drive and power supply systems with lithium polymer cells and is thus a leader in this segment. 

Challenge and task

Lithium batteries have a high risk potential. The causes of self-inflammation are manifold and usually due to an invisible defect. The Association of Non-insurers (VdS) recommends increased safety precautions, such as storage in fire-related separate areas, even for medium-capacity batteries, as well as for damaged energy storage systems. 

Kraken Power GmbH uses the special range for the safe storage of lithium energy storage systems from DENIOS AG in order to ensure insurance coverage and to minimize fire risk. 

Also important was Kraken Power's convenient handling for the separate storage of the lithium modules during the production of the battery units. In order not to accept unnecessary detours during storage, the choice was made for the safe cabinet "SafeStore" with fire protection on both sides, which could be placed directly at the production site.

The solution

With the "SafeStore" from DENIOS, Kraken Power GmbH has received a new generation of safety cabinets with 90 minutes of fire protection from inside and outside as well as equipment components specially designed for the safe storage of lithium batteries. The special feature: Conventional safety cabinets are designed only for a fire from the outside to the inside. The SafeStore model also protects against overheating or smoke build-up inside during storage.

The fire resistance duration is 90 minutes from the inside out and has been proven by an additional fire test based on EN 1363-1. If a fire breaks out outside the cabinet, the "SafeStore" also withstands 90 minutes from the outside and is classified according to EN 14470-1 Type 90.

In addition, a liquid-tight bottom tub ensures a safe absorption of leaks by burning batteries. An integrated, self-closing door mechanism also ensures permanent fire protection.

Customer benefits

With the "SafeStore", Kraken Power receives a state-of-the-art security solution with double-sided fire protection for the storage of lithium modules, which combines fire and insurance protection as well as cost-effectiveness. In addition, the increased safety requirements, which also apply to non-life insurers for the storage of lithium energy storage systems, have been taken into account.