Modular Battery Container Control for Expandable Energy Storage
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Solution Overview
Problem
Conventional energy storage systems require separate management for each battery container, making centralized control and coordination cumbersome, especially when expanding the system.
Innovation Solution
An energy storage system with a control container connected to an external power conversion system and electrical system, and multiple battery containers, where the control container includes a DC unit, an AC unit, and a main controller, allowing for integrated management and expandability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple battery containers operate as autonomous units, then each container can function independently, but centralized control and coordination becomes cumbersome
Solution Approach 1:
The patent merges the control functions of multiple autonomous battery containers into a single control container. The control container includes a main controller that communicates with slave controllers in each battery container, enabling centralized management while maintaining operational independence. This resolves the contradiction by combining control capabilities (improving manageability) while preserving the autonomous operation structure (maintaining reliability).
Solution Approach 2:
The control container serves multiple functions: it acts as a power conversion system interface, a central control hub, and a coordination point for multiple battery containers. The main controller performs diverse tasks including charge/discharge management, communication coordination, and system monitoring across all containers. This multi-functionality allows centralized control without requiring separate dedicated control systems for each container, reducing overall management complexity.
2Stability of the object's composition
If conventional container-unit energy storage systems are used, then each unit is self-contained, but expansion of the system becomes difficult
Solution Approach 1:
The energy storage system is segmented into modular components: a control container and multiple detachable battery containers. Each battery container is an independent module that can be added or removed without affecting the core control container. The standardized interfaces and communication protocols enable easy system expansion while maintaining structural stability of the control architecture.
Solution Approach 2:
The system employs a nested structure where battery containers are hierarchically organized under the control container. The main controller nests within the control container and communicates with slave controllers nested within each battery container. This nested architecture allows the system to maintain a stable core (control container) while enabling flexible expansion through addition of outer layers (battery containers).
Data Source
AI summary
An energy storage system includes a control container configured to be connected to an external power conversion system (PCS) and an external electrical system; and a battery container including at least one battery rack and configured to be connected to the control container.