18HC Liquid-Cooled Container Energy Storage System Technical Overview

This document provides a comprehensive technical overview of an 18HC liquid-cooled container energy storage system designed for new energy applications. The system has a capacity of 8.1MW/8.106MWh, utilizing three energy storage subsystem containers, each rated at 2.7MW/2.702MWh. It employs 280Ah lithium iron phosphate battery cells configured in 1P377S per cluster, with eight clusters per container. The system features a liquid cooling thermal management method with 50kW cooling capacity, ensuring a temperature difference of ≤6°C. Key components include battery clusters, high voltage boxes, battery management units at cluster and box levels, and a power conversion and step-up integrated machine rated at 2.75MW. The container dimensions are 5500x2550x2896mm, with a weight of ≤30T. The system operates within a voltage range of 1055.6-1357.2V and achieves energy efficiency of ≥92%. Safety features include a piped perfluorohexanone fire protection system and water fire protection. The document details the system topology, mechanical interfaces, grounding, and EMS integration, emphasizing superior charge-discharge performance and extended cycle life.