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Lithium cell manufacturer relies on DENIOS safety

The manufacturers of lithium-ion cells are expanding worldwide. In order not to lose valuable time when setting up new production facilities, they rely on modular and turnkey solutions. A lithium cell manufacturer commissioned a test room from DENIOS to carry out product tests. The closed system offers general building authority approval, 90 minutes of fire protection from the inside and outside, a working environment that is climatically adapted to the sensitive technology and customised equipment for demanding activities.

Challenge and task

To ensure high product quality, the manufacturer plans to conduct regular tests. This includes disassembling the lithium cells into their raw components. Since contact with humidity is enough for lithium compounds to catch fire, these tests must take place in a controlled working environment.

The Solution

Integrated air dehumidification minimises the risk of fire in the hazardous materials warehouse: In close consultation with the customer, DENIOS created a self-contained, technical room system for the demanding activities. A customised solution has been created on the basis of the standardised WFP-X 22 hazardous materials warehouse, which already has F 90 fire protection and flexible equipment options.

The equipment is adapted to the planned activities:

  • The room system is divided into an entrance area and a disassembly area.

  • The cutting area is connected to a dehumidification system to keep humidity low and reduce the risk of fire to a minimum.

  • An air-conditioning system generates a constant 20°C +/- 2K.

  • A partition wall with a personnel lock separates the two areas.

  • Access authorisation is controlled by the level of humidity in the entrance area so as not to influence the climate in the cutting room when the door is opened.

  • An additional exit door in the working area serves as an escape route in case of emergency.

  • Four mobile hand-held fire extinguishers are placed at various locations for quick access.

Safety is in every component of the test room:

  • In the event of an accident, further protective measures are mapped via a complex control system.

  • Windows in the doors and in the outer walls as well as a video surveillance system provide a monitoring capability from the outside and ensure additional personal safety.

  • The exterior cladding, including the windows and the cable and pipe penetrations, is fire-resistant (F 90).

  • The floor is antistatic and resistant to chemicals.

  • Emergency lighting enables work to be completed carefully even in the event of a power failure.

  • Emergency signalling can be triggered by three manual alarms and two fire alarms and is both acoustic and visual.

For the dismantling workstation, the customer decided on a DENIOS work table with exhaust air function of the type AT Compact. The work surface is specifically made of plastic for the application. Powerful fans provide an air flow from the surroundings in the direction of the extraction bars. With air speeds of up to 0.5 m/s at the inlet opening, pollutants and emissions in the work area are safely captured, effectively retained and extracted. The folding safety front screen of the Compact worktable protects the worker from emissions. A gas detector signals an alarm as soon as a hydrogen concentration is detected.

Three additional work tables without exhaust function extend the working area for safe activities. Several 230 V sockets and dimmable LED lighting complete the individual room equipment.

Video: Insight into a lithium test room

Result and customer benefit

All-round peace of mind with a central DENIOS project manager: As a rule, many different trades and contractors are involved in construction projects. The risk of coordination problems and information gaps goes hand in hand with this. As a supplier and manufacturer of turnkey technical room systems, DENIOS has all the experts on board. In the project described, the customer benefited from a central contact person right from the start. A project engineer was at the customer's side for the entire project coordination, from the needs analysis to the turnkey delivery. Due to the direct communication and internal coordination of the different departments, the customer's requirements were taken up and implemented without interface losses.

The cooperative dialogue made a decisive contribution to a sensible and economical concept. The decision to award the project to DENIOS was also based on DENIOS' market leadership in the field of hazardous materials storage, existing fire protection approvals and long-standing, wide-ranging references on storage and test rooms for lithium energy storage systems.

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