Cylindrical Power Storage Module Holder for Vibration Fixation

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Solution Overview

Problem

Existing power storage modules face challenges in securely fixing power storage devices in holders, particularly in environments with prolonged vibrations, which can compromise their reliability.

Innovation Solution

A power storage module design featuring cylindrical power storage devices with concave and convex parts on the device and holder surfaces, respectively, forming an anchor effect to enhance fixation, combined with a potting material to reinforce the connection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If power storage devices are fixed in holders using conventional methods, then the structure is simple, but the fixation reliability deteriorates under prolonged vibration

Engineering Contradiction:

Improvefixation reliabilityVSAvoidstructure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The invention introduces convex and concave curved surfaces on the power storage device and holder respectively. The convex part on the power storage device fits into the concave part on the holder, creating an interlocking curved surface structure that enhances fixation reliability under vibration while maintaining structural simplicity

Inventive Principle:

Principle #14Spheroidality (Curvature)

Solution Approach 2:

The convex part of the power storage device is nested within the concave part of the holder, forming a fitted structure where one component is partially contained within another. This nesting arrangement provides secure fixation without adding complex external fastening mechanisms

Inventive Principle:

Principle #7Nested doll (Nesting)

2Stability of the object's composition

If convex and concave parts are formed on power storage device and holder, then fixation stability improves, but manufacturing complexity increases

Engineering Contradiction:

Improvefixation stabilityVSAvoidmanufacturing ease

Core Design Contradiction:

Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

The convex and concave parts are formed using curved surfaces that can be integrated into the existing molding processes for power storage devices and holders. The curved geometry provides stable fixation while being compatible with conventional manufacturing methods

Inventive Principle:

Principle #14Spheroidality (Curvature)

Solution Approach 2:

The invention modifies the surface geometry parameters of the power storage device and holder by adding convex and concave features. These parameter changes enhance fixation stability while being implementable through standard manufacturing process adjustments

Inventive Principle:

Principle #35Parameter changes

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 provides robust fixation of power storage devices, improving their alignment and stability against vibrations, while also facilitating efficient discharge of high-temperature gases during abnormal conditions.

Implementation Method 1

at least one convex part fitted in the concave part is formed on the other

Methodology Applied

Scientific EffectAnchor effect: Mechanical Fastener

Data Source

PatentUS20250260113A1Power storage module

Publication Date: 2025.08.14 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

AI summary

A power storage module includes at least one cylindrical power storage device, and a lower holder that holds a lower end part of the power storage device, wherein at least one concave part is formed on one of a surface of the power storage device facing a holding part and a surface of the holding part facing the power storage device, and at least one convex part fitted in the concave part is formed on the other.