HHS Stackable Battery – Reduce Your Dependence on the Grid and Achieve Energy Independence

Adding energy storage to home solar systems empowers households to reduce their dependence on the grid by capturing and storing excess power generated from their rooftop array. This capability not only maximizes the use of renewable energy but also increases energy independence and reduces carbon emissions.

The modular design of a stackable battery allows for flexible expansion and capacity adjustment. This enables the system to grow with energy demand and solar power capacity, helping achieve resilience and renewable integration objectives.

Increased Energy Independence

One of the biggest criticisms of renewable energy sources like solar and wind is that they can’t be counted on to produce power when you need it, unlike fossil fuels. Energy storage can eliminate this issue by capturing and storing excess energy produced during peak sunlight hours for use at night, allowing you to achieve greater levels of self-sufficiency and reduce your dependence on the grid.

Additionally, many homeowners choose to install batteries as a way to save money on their utility bills. Depending on your state and local incentives, you may be able to take out a loan for the battery system upfront and begin saving immediately. Many homeowners also qualify for a federal investment tax credit (ITC), which helps offset the cost of a battery-powered solar system.

Our stackable batteries come with guided quick connectors that auto-plug once stacked, eliminating the need for hand-wiring and saving installation time. Moreover, the integrated BMS battery management system can manage each cell’s information including voltage, current and temperature to ensure proper cycle life. Moreover, multiple stackable batteries can be connected in parallel to expand capacity and power output capabilities. This enables you to provide power for heavy start load items such as air conditioning and sump pumps with greater efficiency. Lastly, our smart energy BMS controls and protects the stackable batteries against overcharge and overdischarge to ensure maximum battery life.

Reduced Reliance on the Grid

With a large portion of electricity generated by renewables coming from solar panels, HHS stackable batteries can help homeowners maximize their use of energy from the sun. This reduces dependence on the grid and allows them to achieve energy independence.

Behind-the-meter (BTM) applications for storage can deliver customer-facing services — such as utility bill savings, increased PV self-consumption, and backup power — along with grid services at the distribution- and transmission-levels, which are called ancillary services. Using 48v lifepo4 stacked battery cost-effective, system-appropriate battery systems to provide ancillary services can increase the reliability of the overall energy supply and help prevent costly interruptions due to unplanned events.

A number of different battery technologies are currently being used to support a variety of grid services. Among them, energy storage is expected to play an increasingly important role because of its versatility and the ability to provide multiple grid services when needed.

Economic scheduling with battery sizing optimization is proposed to minimize the microgrid operating costs for various battery sizes. The battery optimal size is determined by a combination of two key factors: 1) the lifecycle describing how many charge and discharge cycles the BESS can sustain, and 2) the depth of discharge indicating the maximum capacity that the BESS can maintain over its lifetime. The method is implemented by a firefly algorithm (FA). The results show that the battery sizing and scheduling cost of the proposed technique is much lower than that of other metaheuristic techniques.

Enhanced Solar Energy Utilization

The high voltage stackable battery allows households to maximize the use of locally generated solar energy, reducing energy demand from the grid and helping them achieve energy independence. The system also allows users to store excess solar energy for usage during off-peak sunlight hours, further reducing their reliance on the grid and contributing to a more sustainable energy landscape.

The device consists of a flexible battery, PCB board and semi-flexible solar cells module that are integrated into a single unit. The battery is a 3.2 V Lithium Iron Phosphate (LiFePO4) cell with a capacity of 4.2 Ah. The solar cells are monocrystalline silicon and have an efficiency of up to 25%.

A power management IC (BQ25570) from Texas Instruments is used to manage the power acquired from the solar cells to charge the battery and power the microprocessor module. This IC can be configured with different MPPT algorithms depending on the energy source. It can also be set to power a load with a fixed output voltage value using its buck converter.

The prototype was tested under different sunlight conditions and during four Daily Routines (DR) to replicate typical usage. The first DR consisted of wearing the device during a working day with sunny weather and a maximum generated power of 148.0 mW. In the second and third DR, the device was worn on weekends with cloudy weather to observe how the battery performs in these conditions.

Increased Flexibility

As more variable renewable generation is integrated, energy storage is critical to support power peaks. Today’s high-power, low-cost batteries are well suited for peak shaving applications, providing power in milliseconds to minutes.

However, longer durations require more capacity and higher cycle life. This is why newer battery technologies such as sodium-sulfur and flow batteries are gaining traction in the grid market.

The stackable energy storage brick features intelligent BMS powerwall (Battery Management System), which monitors cell information including voltage, current and temperature. During charging and discharging, cells are balanced by the BMS to ensure an equal amount of energy is available to all the batteries. This prevents the weaker batteries from getting hammered by their stronger siblings and helps prolong their cycle life.

Additionally, a patented self-cooling mode allows the stackable batteries to operate at lower temperatures without any degradation of their performance. This makes the UFO energy storage brick an ideal choice for residential applications. It is also able to flexibly expand its capacity by connecting multiple batteries in parallel, which can reach up to 75kwh. Moreover, the stackable battery provides a safe, reliable and environmentally friendly alternative to traditional lithium ion batteries. It is also highly durable and has a long service life of up to 10 years, which is three times longer than traditional lithium batteries.