S³-EStation 1500 V Liquid-cooling Energy Storage Battery System

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Kehua Tech

Anhui, China

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The liquid-cooling energy storage battery system of Kehua Digital Energy includes a 1500 V energy battery seires, rack-level controllers, liquid cooling system, protection system and intelligent management system. The rated capacity of the system is3.44 MWh. Each rack of batteries is equipped with a rack-level controller (or high-voltage box) for charging and discharging. Each rack of batteries incloudes eight 1P48S battery packs(1P48S cells for each pack) connected in series. The cell capacity of the system is 280 Ah and higher. Eight racks are combined through rack-level controllers (or high-voltage box) as the external output of the container. The system adopts an external maintenance design, integrates internal fire distinguish system and liquid cooling pipeline to realize the fire distinguish and intelligent management of the liquid-cooling battery energy storage system. Different applications scenarios such as peak shaving and frequency modulation, output power smoothing, grid support, and peak load shifting for renewable energy side, grid side(independent/shared energy storage) and user side can be supported by the BESS.

Characteristics:
Secure.
■ Designed battery cells, battery packs, BMS, and fire system to ensure safety for the entire energy storage station.
■ Integrated BMS and rack-level controller for intelligent power control and scheduling, including active current sharing, intelligent switching, fast response, and double protection for battery rack units.
■ Intelligent battery protection management for forecasting SOH, decreasing thermal runaway, and enhancing system equipment safety.
Smart
■ Use power electronics technology to monitor and manage processes by merging software and hardware with 3S designs (PCS, BMS, and EMS).
■ Intelligent battery health management, insulation defect diagnosis and protection, and fire detection at both the container and pack levels.
■ Our intelligent maintenance platform uses AI to detect failure locations and provide early warnings, making the system easy to grow, manage, and install.
Simple
■ Adapt to 3.45MW energy storage converters for standardized and integrated design from battery to grid, enabling quick configuration and implementation.
■ Integrated battery system design, unified interface, remote upgrading, cloud data analysis, and visual management.
■ DC/DC enhances system cycle life and charging/discharging capacity for cells with capacities of 280Ah or above, with a 20-year reliability design (Product T).