Battery Module Assembly Guide for Connector Stability

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Solution Overview

Problem

Existing energy storage systems face issues with connector damage and detachment due to repeated demounting and mounting, affecting the stability and assembly convenience of secondary battery modules.

Innovation Solution

The energy storage system incorporates a first battery module assembly with a module guide and a second battery module assembly, featuring connectors that are spaced apart during pre-mounting to prevent collision, and a terminal insertion sequence that prioritizes high voltage terminals first to enhance stability and assembly convenience.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If connectors are closely positioned for compact assembly, then assembly density is improved, but connector damage and detachment occur due to external forces and repeated demounting

Engineering Contradiction:
Improveassembly densityVSAvoidconnector stability
Core Design Contradiction:
Volume of moving objectVSReliability

Solution Approach 1:

The connector assembly is divided into separate components: a first connector on the first battery module assembly and a second connector on the second battery module assembly. These segmented connectors are positioned at different locations and connected through a controlled path, reducing the risk of mutual damage while maintaining compact overall assembly.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A guide structure acts as an intermediary between the two connectors, defining a specific insertion path and controlling the relative movement during assembly. This intermediary mechanism protects the connectors from external forces and misalignment damage while enabling compact positioning.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If demounting and mounting operations are performed frequently for maintenance, then ease of operation is improved, but connector damage and internal component detachment occur

Engineering Contradiction:
Improvemaintenance accessibilityVSAvoidconnector integrity
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The guide structure is pre-installed on the battery module assemblies before connector connection. This preliminary action establishes a protected insertion path that guides subsequent connector assembly and disassembly operations, preventing damage during repeated maintenance cycles while maintaining ease of operation.

Inventive Principle:
Principle #10Preliminary action

3Stability of the object's composition

If module guide structure is added to guide mounting, then assembly stability is improved, but device complexity increases

Engineering Contradiction:
Improveassembly stabilityVSAvoidstructure complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The guide structure is merged with the battery module assembly housing rather than being a separate component. This integration provides assembly guidance and stability while minimizing the increase in device complexity, as the guide features are incorporated into the existing structural elements.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP4668443A1Energy storage system
Publication Date: 2025.12.24 LG ENERGY SOLUTION LTD
  • EP4668443A1 patent drawingFigure 1
  • EP4668443A1 patent drawingFigure 2
  • EP4668443A1 patent drawingFigure 3

AI summary

An energy storage system according to an embodiment of the present disclosure may include a first battery module assembly and a second battery module assembly mounted on the first battery module assembly, wherein the first battery module assembly may include a module guide provided to guide the mounting with the second battery module assembly.