Modular Battery Pack Venting Structure for Safe Narrow-Space Assembly

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Solution Overview

Problem

Existing battery packs face challenges in providing convenience for carrying and installation, particularly in narrow spaces, and ensuring safety during abnormal conditions.

Innovation Solution

A battery pack design featuring a pair of battery modules with partition walls and a supporting plate, a BMS assembly, and specific cover structures to facilitate easy assembly and prevent flame leakage, incorporating gas discharge channels and mesh filters to enhance safety.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If the battery pack is designed with sufficient capacity and output using multiple battery cells, then the energy storage capability is improved, but the volume and weight increase making it difficult to move through narrow spaces

Engineering Contradiction:

Improvebattery cell quantityVSAvoidportability

Core Design Contradiction:

Quantity of substanceVSEase of operation

Solution Approach 1:

The battery pack is divided into multiple detachable battery modules, each containing one or more battery cells. This segmentation allows the system to provide sufficient total capacity while enabling flexible configuration and easier handling of individual modules through narrow spaces and staircases.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The battery modules are designed with a compact vertical stacking arrangement, transitioning from horizontal placement to vertical dimension utilization. This dimensional change optimizes space utilization and reduces the footprint, making the battery pack more suitable for installation in limited spaces while maintaining adequate capacity.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Strength

If the battery modules are tightly coupled to ensure structural stability, then the mechanical strength is improved, but the ease of assembly and disassembly deteriorates

Engineering Contradiction:

Improvestructural strengthVSAvoidassembly ease

Core Design Contradiction:

StrengthVSEase of manufacture

Solution Approach 1:

The battery pack employs modular battery modules with standardized coupling interfaces. Each module can be independently assembled and then quickly coupled to adjacent modules through simple mechanical connections, maintaining structural integrity while enabling easy assembly and disassembly for maintenance or reconfiguration.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The coupling mechanism between battery modules incorporates movable and adjustable components that allow for quick connection and disconnection. The structural elements are designed to provide sufficient strength when coupled while remaining dynamically adjustable during assembly operations.

Inventive Principle:

Principle #15Dynamics

3Ease of operation

If the battery pack structure is simplified to improve portability, then the ease of carrying is improved, but the safety in case of abnormal situations deteriorates

Engineering Contradiction:

Improvecarrying convenienceVSAvoidsafety

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The segmented modular design allows safety features such as partition walls, mesh filters, and gas discharge channels to be integrated into each individual module. This ensures that safety functions are maintained even when the overall structure is simplified for portability, as each module operates as an independent safety-contained unit.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The battery module design incorporates beforehand safety measures including flame-resistant partition walls, mesh filters to prevent flame propagation, and dedicated gas discharge channels. These safety features are built into the basic module structure before assembly, ensuring protection against abnormal situations while maintaining a compact portable form.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The design improves carrying convenience and safety by allowing easy handling and effective gas and flame containment, minimizing external discharge during abnormal conditions.

Implementation Method 1

A mesh filter may be inserted into at least one of the gas discharge hole and the lower cover holes

Methodology Applied

Scientific EffectFiltration: Filter (physical)

Implementation Method 2

a gas channel may be formed between the cell stack and the module housing

Methodology Applied

Scientific EffectGas channeling: Convection

Data Source

PatentUS12476323B2Battery pack having structure with increased movement and ease of assembly and structure with improved safety, and ESS comprising same

Publication Date: 2025.11.18 OMRON CORP

AI summary

A battery pack includes a pair of battery modules having a plurality of first partition walls formed to extend downward from a lower surface thereof, a supporting plate having a plurality of second partition walls formed to extend upward from an upper surface thereof and a gas discharge hole formed at a longitudinal center thereof, the supporting plate being coupled to a bottom of the pair of battery modules such that plurality of first partition walls and the plurality of second partition walls are adjacent and overlap each other in one-to-one pairs and a BMS assembly coupled to an upper portion of the pair of battery modules in a plug-in type.