Modular Battery Container Control for Stable ESS Communication

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Solution Overview

Problem

Conventional energy storage systems require individual control of independent container units, leading to inefficiencies and challenges in communication stability and scalability.

Innovation Solution

An energy storage system with a control container, battery container, and watering container, utilizing multiple interconnected communication lines (home run and daisy chain configurations) for stable communication and scalability, including a battery system controller, master and slave controllers, and fire extinguishing capabilities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If energy storage systems are configured in independent container units, then each system can be independently controlled and contained, but the systems must be controlled individually which increases operational complexity and reduces efficiency

Engineering Contradiction:
Improveindependent control capabilityVSAvoidindividual control requirement
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges multiple independent container units into a single integrated energy storage system. Multiple battery containers are connected within one system framework, allowing centralized control through a unified control system rather than requiring separate control for each container. This reduces operational complexity while maintaining the containment and control capabilities of individual units.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The control system is designed with universal functionality to manage multiple battery containers simultaneously. The single control system can interface with and control various components across different containers, providing multi-functional control capabilities that eliminate the need for separate control systems for each container unit.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Ease of manufacture

If communication lines are not pre-configured with connection terminals, then system assembly is simpler, but communication stability between components deteriorates

Engineering Contradiction:
Improveassembly simplicityVSAvoidcommunication stability
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

Connection terminals are pre-configured and built into the communication lines during the manufacturing stage. This preliminary action ensures that when the system is assembled, the communication connections are already established and stable, eliminating the need for complex field wiring while guaranteeing reliable communication between control components.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The connection terminals act as intermediary elements that facilitate stable communication between different system components. These pre-configured terminals provide standardized interfaces that ensure reliable electrical and data connections, serving as mediators between the control container and battery containers without requiring complex custom wiring arrangements.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Device complexity

If battery containers cannot be easily expanded, then system configuration is simpler, but scalability and adaptability to different energy storage requirements are reduced

Engineering Contradiction:
Improvesystem configuration simplicityVSAvoidscalability
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The energy storage system is divided into modular battery containers that can be independently added or removed. Each container is a self-contained unit with standardized interfaces, allowing the system to be segmented into discrete modules. This segmentation enables easy expansion by simply adding more container units while maintaining system simplicity through standardized configurations.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system configuration is made dynamic and adaptable through modular design. The number and arrangement of battery containers can be changed based on energy storage requirements, allowing the system to evolve and scale. This dynamic configuration capability enables adaptability to different applications while maintaining operational simplicity through consistent modular interfaces.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP4380114B1Energy storage system
Publication Date: 2026.03.18 LG ENERGY SOLUTION LTD
  • EP4380114B1 patent drawingFigure 1
  • EP4380114B1 patent drawingFigure 2
  • EP4380114B1 patent drawingFigure 3

AI summary

An energy storage system according to an embodiment of the present disclosure includes a control container configured to include a battery system controller (BSC), a master controller configured to be connected to the BSC through a first communication line, and a bank battery management system (BBMS) configured to be connected to the BSC through a second communication line; and a battery container configured to include a slave controller configured to be connected to the master controller through the first communication line, and a rack battery management system (RBMS) connected to the BBMS through the second communication line and configured to monitor a state of a corresponding battery rack.