Battery Pack Control Unit Segmentation for Faster Module Management

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Solution Overview

Problem

Conventional battery packs face inefficiencies in control processing speed and quality due to a single control module managing multiple cell module assemblies, leading to increased manufacturing costs and reduced energy density.

Innovation Solution

A battery pack design where cell module assemblies are divided into groups, each managed by a separate control unit, with a connection cable system to optimize control efficiency and reduce space occupancy by control modules.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If one control module is used to manage all cell module assemblies, then manufacturing cost is reduced, but control processing speed and quality deteriorate

Engineering Contradiction:

Improvemanufacturing costVSAvoidcontrol processing speed

Core Design Contradiction:

Ease of manufactureVSProductivity

Solution Approach 1:

The control module is divided into multiple independent control units, each managing a specific group of cell module assemblies. This segmentation allows parallel processing of control tasks, improving control processing speed and quality while maintaining cost-effectiveness through shared architecture

Inventive Principle:

Principle #1Segmentation

2Ease of manufacture

If one control module is used to manage all cell module assemblies, then manufacturing cost is reduced, but control quality deteriorates

Engineering Contradiction:

Improvemanufacturing costVSAvoidcontrol quality

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The control module is divided into multiple independent control units, each managing a specific group of cell module assemblies. This segmentation allows dedicated attention to each group, improving control quality and reliability while maintaining cost-effectiveness through shared architecture

Inventive Principle:

Principle #1Segmentation

3Productivity

If individual control modules are provided for each cell module assembly, then control efficiency is improved, but manufacturing cost increases

Engineering Contradiction:

Improvecontrol efficiencyVSAvoidmanufacturing cost

Core Design Contradiction:

ProductivityVSEase of manufacture

Solution Approach 1:

The control module is divided into multiple independent control units, each managing a specific group of cell module assemblies. This segmentation provides dedicated control for improved efficiency while maintaining cost-effectiveness through shared architecture

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Multiple control units share a common communication interface and control architecture, allowing them to perform similar functions simultaneously. This universality reduces manufacturing cost through standardized components while maintaining high control efficiency

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Productivity

If individual control modules are provided for each cell module assembly, then control efficiency is improved, but energy density decreases

Engineering Contradiction:

Improvecontrol efficiencyVSAvoidenergy density

Core Design Contradiction:

ProductivityVSQuantity of substance

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20240178508A1Battery pack and energy storage system including the same

Publication Date: 2024.05.30 LG ENERGY SOLUTION LTD

AI summary

A battery pack includes a plurality of cell module assemblies having at least one battery cell, and a control module electrically connected to the plurality of cell module assemblies to manage the plurality of cell module assemblies as at least two groups.