Deye presents a new LFP roof battery for photovoltaics. The Chinese energy store is small and universal
Ningbo Deye Inverter Technology, a Chinese firm, has introduced a 51.2 V LFP battery module. This innovative product combines 32 individual components to create a novel energy bank, boasting an overall capacity of 196.48 kWh. Designed for the purpose of storing power from photovoltaic installations situated on residential rooftops.
The new RW-S6.1 lithium-iron-phosphate battery from the Chinese company Deye Source: company’s advertising materials
Deye has unveiled a Lithium Iron Phosphate (LiFePO4 or LFP) battery tailored for rooftop applications. By integrating 32 lithium iron phosphate battery modules, each featuring a nominal voltage of 51.2 V and a capacity of 6.24 kWh, the resulting installation accumulates a comprehensive capacity of 1638.4 A (equivalent to 196.48 kWh).
Chinese batteries on the roof
NingBo Deye Inverter Technology (Deye), a leading Chinese inverter manufacturer, has innovated a novel lithium iron phosphate (LiFePO4) battery storage system tailored for both residential and commercial rooftop applications.
The system allows for the parallel connection of up to 32 battery modules, ranging in capacity from 6.14 kWh to an impressive 196.48 kWh.
Each module maintains a nominal voltage of 51.2 V and is sized at 460 mm x 720 mm x 143 mm (with a depth of 160 mm, inclusive of suspension installation), weighing 55 kg. Designed for wall or floor mounting, its primary purpose revolves around photovoltaic integration.
The RW M6.1 series is notably well-suited for scenarios demanding high power output, constrained installation spaces, and extended operational lifecycles.
informs Deye
The fresh battery model is engineered for discharging within the temperature range of -20 to 55 degrees Celsius, while charging is supported between 0 to 55 degrees Celsius. The manufacturer offers a comprehensive 10-year warranty for the battery and guarantees a lifespan exceeding 6,000 cycles.
Low-voltage batteries serve as backup energy sources for households. Their substantial capacity empowers homeowners to optimize their solar energy generation, consequently lowering reliance on the grid and augmenting the surplus energy harvested from photovoltaic panels.
The manufacturer advertises
The battery employs cobalt-free lithium iron phosphate, a material chosen for its combination of safety, extended lifespan, efficiency, and high power capability. The materials utilized in its production are environmentally benign, as the module is non-toxic and free from pollutants.
The intelligent Battery Management System (BMS) assumes comprehensive protective duties by constantly supervising cell voltages during both charging and discharging. If it detects any irregularities such as a voltage drop in any cell, it triggers a disconnection mechanism. Similarly, during charging, it ensures balance across cells to prevent exceeding upper voltage thresholds.
The RW M6.1 is adept at handling substantial discharge power, and its IP65 rating guarantees efficient natural cooling.
With a modular configuration, expansion is simplified, accommodating up to 32 parallel units. This adaptability renders it beneficial for household, commercial, and corporate applications.
Its notable attributes include a relatively light and slim profile, well-suited for wall or rooftop installation, making it ideal for settings with limited installation space.
Moreover, this new Deye product offers automatic battery module connection, IP addressing, remote monitoring, and updates.
A 10 kW photovoltaic battery can range in cost from PLN 4,000 for the most budget-friendly models, similar to a 200 Ah gel battery for photovoltaic use. Smaller 100 Ah gel batteries can be found starting from around PLN 750, while some models can reach prices as high as PLN 14,000.
The anticipated price of the RW M6.1 is approximately EUR 2,900, though it has not yet been released on the global market.
Ningbo Deye ESS Technology Co., Ltd is a scientific and technological enterprise specializing in the design and production of energy storage systems. Their endeavors encompass diverse areas, such as the development of Battery Management Systems (BMS) for lithium batteries, battery testing and production, as well as energy storage system integration.
Their customer base spans the globe, providing tailored energy storage solutions for residential, industrial, and commercial purposes, including portable backup power and network support services. The company’s products are certified by international standards such as IEC, CE, VDE, UL, and UN38.3.
When lithium meets iron and phosphate
The market offers a diverse range of energy storage options. Among these, the lithium iron phosphate (LiFePO4) blend is widely regarded as one of the safest battery types available today. Manufacturers have engineered these batteries to eliminate the risk of overheating or explosions, ensuring heightened safety.
LiFePO4 batteries also stand out for their compactness compared to other alternatives. Their weight is notably lighter, up to three times less than gel or Valve-Regulated Lead-Acid (VRLA) batteries, which are commonly utilized, particularly in Poland.
Benefitting from their reduced size and commendable performance, lithium iron phosphate batteries find applications across a spectrum of installations. They are prevalent in electric cars, marine vessels, sailboats, wheelchairs, and motorhomes.
These batteries are particularly suitable for storing energy harnessed by photovoltaic panels due to their impressive resistance to environmental factors. They exhibit operational capability within a broad temperature range, spanning from -20 to 55 degrees Celsius. Consequently, LiFePO4 energy banks are gaining popularity among proponents of renewable energy.
An additional advantage is that these batteries are free of toxic and environmentally detrimental substances. Their durability and efficiency are notably high, rendering them a compelling ecological alternative.
Energy for later and no worries about blackouts
Energy storage has long been a consideration within the photovoltaic sector. When prosumers are away from home during the day, solar panels generate surplus energy that goes unused. Conversely, in the afternoon and evening when solar power diminishes, there might not be enough electricity available for the household’s requirements. This scenario holds particularly true during Poland’s short winter days when energy generation from solar installations might be limited.
This is where the burgeoning interest in green energy intersects with the development of the energy storage market. The purpose is to harness and store surplus energy produced by solar panels for later utilization. Not only does this strategy aid in optimizing energy consumption, but it also acts as a safeguard in the event of power outages or disruptions in the grid.
Sources:
- https://www.pv-magazine.com/2023/03/13/deye-unveils-lithium-iron-phosphate-battery-for-rooftop-applications/
- https://www.sklepelektryka24.pl/akumulatory.html