This invention discloses a compartmentalized concrete
energy storage unit and an immersion liquid-cooled
energy storage system. The
energy storage unit includes: a housing made of concrete, the interior of which is directly enclosed by the housing walls to form at least one independent compartment; a door, independently provided for the opening of each compartment, with a sealing structure between the door and the housing; a guide bearing structure located inside each compartment; and an encapsulated battery module located inside the compartment and slidably connected to the guide bearing structure, which can be pushed into or pulled out of the compartment along the guide bearing structure. This invention achieves a high degree of integration of the energy storage unit by directly enclosing the compartments with the housing; each compartment is independently sealed and pressure-bearing, allowing the battery module to be immersed in a
cooling medium during application, using water-based
coolant instead of expensive insulating liquid, significantly reducing
system costs; simultaneously, immersion cooling achieves efficient heat dissipation and integrated
fire protection, and the independent compartment design confines
thermal runaway to a
single compartment, significantly improving
system safety.