Deye BOS-A high-voltage storage module LiFePO4 7.68 kWh

Deye BOS-A is a modular high-voltage energy storage module designed for use in high-performance and scalable storage systems for residential and commercial applications. Based on superior lithium iron phosphate (LiFePO4) technology, each module offers a capacity of 7.68 kWh. Multiple modules can be connected in series to create a high-voltage system that ensures maximum efficiency, safety and flexibility for modern photovoltaic installations.

Highlights at a glance

• Scalable high-voltage system: Several modules (e.g. 7 to 21 units) are combined in series to form a high-performance high-voltage storage tower.
• Maximum safety with LiFePO4: Cobalt-free lithium iron phosphate technology is considered the safest and longest-lasting on the market.
• Intelligent Battery Management System (BMS): Each module is continuously monitored to ensure safe and optimised operation.
• High efficiency: High-voltage technology reduces energy losses and increases the overall efficiency of the system.
• Professional rack mounting: Designed for simple and secure installation in standard industrial racks.

Flexible scalability for high energy requirements

Deye ’s BOS-A storage system is designed for maximum flexibility and future-proofing. Starting with a system size of, for example, seven modules (approx. 54 kWh), the capacity can be scaled up to meet growing energy requirements by adding further modules. This scalability positions the system as the ideal solution for high-demand homes with heat pumps and electric vehicles, as well as for agricultural and commercial businesses seeking to maximise their self-consumption and reduce peak loads.

Maximum safety and longevity with LiFePO4

The integration of lithium iron phosphate cells (LiFePO4) establishes the highest safety benchmark in energy storage solutions. These cells are highly thermally stable, inherently safe, and do not contain cobalt. They are characterised by an exceptionally high cycle life of over 6,000 charge and discharge cycles, which enables a very long service life of over 15 years and makes the system a sustainable and cost-effective solution.

Intelligent control and professional installation

At the heart of the system is the intelligent battery management system (BMS), which is integrated into a higher-level control unit (Cluster Control Box). It reliably protects the storage system against overcharging, deep discharge, overheating and short circuits. It also ensures active cell balancing, which maximises efficiency and service life. The individual modules are designed for quick and safe installation in professional racks (control cabinets), ensuring a neat and standard-compliant installation.
 

Features

H2: FAQs on the BOS-A storage system ( Deye )

What is the advantage of a modular storage system?

A modular system offers you the flexibility to start with a capacity tailored to your current needs and expand this later as required by adding further modules. You can adapt your storage system to rising energy requirements, e.g. due to an electric car.

Why is LiFePO4 the safest lithium technology?

LiFePO4 cells have a very stable chemical structure. They are not susceptible to thermal runaway, even in the event of mechanical damage or overcharging. This makes them the safest choice for use in residential and commercial buildings.

What is the advantage of a high-voltage (HV) storage unit over a low-voltage (LV) one?

A high-voltage system operates at a higher voltage and correspondingly lower currents to transmit the same power. Lower currents result in less heat loss in the cables and the inverter, which increases the overall efficiency of the system (PV system, storage and inverter).

Which inverters is this system compatible with?

The Deye BOS-A system is optimally matched to the high-voltage hybrid inverters from Deye (e.g. 50–100 kW series). Communication between the storage system’s BMS and the inverter ensures perfectly coordinated and efficient operation. Compatibility with inverters from other manufacturers should be checked in advance. We strongly recommend checking the compatibility list.

 

Delivery scope: Deye BOS-A (7.68 kWh HV battery storage module)

1 x Deye BOS-A battery module (7.68 kWh)

• A high-performance high-voltage LiFePO4 storage module for industrial applications with a capacity of 7.68 kWh, designed for installation in 19-inch rack systems.

1 x set of internal DC connection cables

• Short, high-current-rated power cables for the serial connection of the module to the next module within the battery cabinet.

1 x internal communication cable (RJ45)

• A data cable for integrating the module into the internal BMS communication chain for monitoring cell voltages and temperatures.

1 x mounting kit (screws and mounting brackets)

• Special brackets and screws for the secure mechanical fixing of the module in the rack’s profile rails.

1 x Grounding Cable

• A yellow-green cable for correct equipotential bonding between the module housing and the central earthing point of the cabinet.

1 x User manual

• A technical supplement containing specifications, installation instructions and information on the correct addressing of the module within the system network.