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Customer application

The Tailored Large Storage Battery

With a scalable hybrid energy storage system of lead acid and lithium ion batteries, the battery expert HOPPECKE from Brilon is allowing new flexibility in power supply.

Hardly a sound can be heard, only the air-conditioning fans turning slowly. It’s hard to believe that the within the inconspicuous container runs one of the most innovative and robust energy storage systems currently available on the market. “We have confirmed the feasibility of the systems, and our expectations have been exceeded,” states Matthias Büter, Product Manager and Project Director of HOPPECKE Batterien GmbH & CO.

Energy storage systems are playing an increasingly important role in meeting the challenges of the energy transition. They stabilize the power grid and support medium-sized and large industrial plants in absorbing the shock of their energy demand and saving on infrastructure investments.

Storage systems can do even more: They make it possible to optimize energy consumption even with self-produced wind or solar power, provide power for electric charging stations and ensure an uninterrupted power supply. “Our ‘sun | systemizer scalecube’ large storage system allows all these challenges to be met economically,” explains Büter.

Smoothing load peaks, optimizing self-supply, charging electric vehicles – HOPPECKE from Brilon has developed a large storage system that supports small and medium-sized companies in optimizing their power supply.

Lead and Lithium in a Sensible Combination

The HOPPECKE innovation has an essential advantage: It is modularly scaleable, so it can be adapted to any application. The example on the plant premises can take in and discharge up to 1.5 megawatts of electric power This power is divided among three battery units with a total energy content of about 2600 kilowatt-hours: Two units consist of a total of two times 416 serially connected, maintenance-free lead cells from HOPPECKE of the grid|power VR M 2V 600Ah type.

Another battery unit has been implemented with 2560 lithium ion cells that are connected into individual modules. “The lithium ion battery is the real workhorse for the application, since it is more cycle-proof than the two lead batteries. The lead units form the backup,” explains Büter. All the technology is housed in two containers that are specially protected against weather.

One standard-sized container accommodates the lithium unit and another, somewhat larger one the lead units. Within the containers, the batteries and accumulators are stacked neatly in specially developed racks. In order to be able use as many lead cells as possible and thus achieve the highest possible energy density of the area while taking up at little space as possible and meeting safety requirements, the two middle rack rows of the four total can be shifted electrically. This creates a 60 centimeter wide maintenance passageway between the two rows at the press of a button.

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