Inverters Batteries

New battery for residential and industrial storage from Germany – pv journal Worldwide

The modular battery is manufactured by Fenecon in Germany and has a storage capacity of 8 kWh to 22 kWh. The product is intended to enable predictive, network-friendly charging and discharging.

May 3, 2021

Of pv magazine germany

The German storage system provider Fenecon has presented a storage system for private and commercial applications Equipped with a self-learning energy management system that takes power consumption and weather forecasts into account.

The system should be able to keep the battery capacity free for midday on sunny days in order to prevent a restriction and thus a loss of power yield. For this purpose, the energy is automatically distributed in advance to charging stations for electric vehicles, heat pumps or other controllable systems. Customers with time-variable electricity tariffs should also be able to use the control system in a targeted manner. In addition, the control should prevent solar energy from being fed into the grid during peak times.

According to the manufacturer, customers can also access a large number of other energy services and applications via the OpenEMS platform – for example municipal or flat-rate offers for green electricity if their own solar power does not meet their needs at times.

The modular battery pack has a size of 506 x 365 mm and a storage capacity of 8.8 kWh to 22 kWh. The high-voltage batteries, the battery management module and the intelligent control box can be connected to one another. With a total height of only 1,710 mm in the maximum permissible version with ten battery modules, there is still space for wall mounting the inverter – which weighs 24 kg, even in low basement rooms. A total of three such towers can be connected to one another to increase the capacity to up to 66 kWh.

In addition to the energy management system, the new product includes DC surge protection for the photovoltaic strings. Internet access; all battery outputs; and the communication interface to the inverter, to additional battery towers, heat pumps or charging stations.

According to Fenecon, all connections are pluggable and suitable for outdoor use. This means that neither the box for the battery management system (BMS) nor the box for the self-learning energy management system have to be opened for installation.

The company also claims that the system typically takes less than an hour to install and start up. The three-phase inverter developed in cooperation with a partner not named has a photovoltaic connection for up to 13 kW and an output of 10 kW. The hybrid unit combines solar and battery inverters in one device.

According to Fenecon, the battery is suitable for all new photovoltaic systems and for retrofitting existing systems. A combination of DC and AC coupled connections is also possible. In the event of a power failure, the integrated power interruption enables uninterrupted and powerful emergency power with solar charging.

"A storage system for the energy transition must intelligently integrate photovoltaic systems, wall boxes, heat pumps and electricity tariffs into a central management system – and optimize self-consumption," says Ludwig Asen, Head of Product Management at Fenecon, describing the idea behind the storage solution.

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