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German manufacturer Solarwatt says its new battery can be flexibly configured as an AC or DC system. It also features an emergency power supply function and can only be combined with Solarwatt inverters.
German company Solarwatt has introduced a new storage system for residential photovoltaic systems.
The Battery Vision system can be configured with a capacity of 5.2 kWh up to a maximum of 18.2 kWh and can be installed as a single-phase or three-phase and as a DC or AC system, making the product equally suitable for new installations and retrofits.
The system features BMW lithium iron phosphate cells, stackable in a modular design. It comprises a base unit and a top unit, each with a capacity of 2.6 kWh, expandable with up to five additional modules of the same capacity.
The nominal DC voltage is 57.6V, with a range of 40V to 480V, and a maximum charge/discharge current of 50A. It operates up to 55ºC and allows discharges down to -10ºC, with charging restricted to 0ºC or more. Its IP65-rated housing allows for outdoor installation.
The battery is exclusively operated with Solarwatts "Inverter vision one" and "vision three" models. The single-phase inverter offers five power options, ranging from 6 kW to 12 kW at the DC PV input. Each model includes two MPP trackers with one input each, which support a maximum system voltage of 600 V and a short-circuit current limit of 20 A. The three-phase inverter offers slightly higher efficiency values ??for increased capacity.
“The battery absorbs a lot of energy very quickly and can then release it just as efficiently when needed (1C power rate),” says Solarwatt Product Manager Peter Bachmann. “This is of utmost importance, for example, when charging an electric car or operating a heat pump using the storage system. Our new generation of storage systems reacts around three times faster than comparable products from our competitors.”
The inverters supply single-phase emergency power from the battery, automatically switching over in less than 20 milliseconds to ensure uninterrupted supply. According to Solarwatt, the emergency output power ranges from 3 kW to 6 kW. The system also allows charging from the grid when dynamic electricity tariffs offer favourable prices.
Passive cooling reduces operating noise to 35 decibels. Solarwatt offers a 10-year warranty on the system, reflecting its commitment to reliability and performance. |
