This 3.4MWh industrial and commercial liquid-cooled energy storage battery system is specifically designed for high-capacity energy storage requirements. It achieves intelligent management through the integration of PCS, BMS and EMS, and optimizes heat dissipation efficiency by adopting vertical liquid-cooled piping technology, significantly enhancing the battery's cycle life and safety performance. Its modular structure supports flexible deployment and can be widely applied in scenarios such as factories, photovoltaic power stations, grid-side peak shaving, and high-energy-consuming facilities. While ensuring a deep discharge rate of over 90%, it also possesses remote monitoring and rapid upgrade capabilities, providing industrial users with a highly reliable and low-maintenance large-scale energy solution.