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

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

Highlights at a glance

• Scalable high-voltage system: Multiple modules (e.g. 7 to 21 units) are connected in series to form a high-performance high-voltage storage tower.
• Maximum safety with LiFePO4: The cobalt-free lithium iron phosphate technology is considered the safest and most durable on the market.
• Smart Battery Management (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 installation: Designed for easy and safe installation in standard industrial racks.

Flexible scalability for high energy needs

The Deye 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 expanded as energy needs grow by adding more modules. This scalability makes the system the ideal solution for demanding homes with heat pumps and e-mobility, as well as for agricultural and commercial businesses looking to maximise self-consumption and cut peak loads.

Maximum safety and longevity with LiFePO4

The use of lithium iron phosphate cells (LiFePO4) sets the highest safety standard in storage technology. These cells are extremely thermally stable, inherently safe and are cobalt-free. They are characterised by exceptionally high cycle stability of over 6,000 charge and discharge cycles, enabling a very long service life of over 15 years and making the system a sustainable and economical solution.

Intelligent control and professional installation

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

Features

H2: FAQs on the Deye BOS-A storage system

What is the advantage of a modular storage system?

A modular system gives you the flexibility to start with a capacity tailored to your current needs and to expand it later if necessary by adding additional modules. You can adapt your storage system to increasing energy needs, for example 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 over a low-voltage (LV) one?

A high-voltage system operates at a higher voltage and correspondingly lower currents to deliver the same power. Lower currents lead to less heat loss in the cables and inverter, resulting in higher 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 Deye high-voltage hybrid inverters (e.g. 50-100 kW series). Communication between the storage BMS and the inverter ensures perfectly coordinated and efficient operation. Compatibility with inverters from other manufacturers should be checked in advance.

 

Scope of delivery: Deye BOS-A (7.68 kWh HV battery storage module)

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

• A powerful 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 power cables for 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 secure mechanical fixing of the module in the rack profile rails.

1 x grounding cable (Grounding Cable)

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

1 x user manual (Manual)

• A technical supplement containing specifications, installation instructions and information on properly addressing the module in the system network.