Secondary Battery Can with Segmented Receiving Spaces

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Solution Overview

Problem

As the capacity of secondary batteries increases, the storage capacity relative to the surface area decreases, and heat radiation and dissipation become critical factors affecting safety, particularly in high-tech electronic devices where efficient heat dissipation is necessary.

Innovation Solution

The design of a secondary battery with a can having multiple receiving spaces and a separation space, along with a cap plate that seals the can, increases the surface area for heat dissipation by incorporating long, short, and separation sidewalls, and a connection wall, allowing for improved heat radiation characteristics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If the capacity of a single battery is increased, then the storage capacity increases, but the storage capacity relative to the surface area decreases and heat dissipation becomes insufficient

Engineering Contradiction:

Improvestorage capacityVSAvoidheat dissipation

Core Design Contradiction:

Quantity of substanceVSTemperature

Solution Approach 1:

The can is divided into multiple receiving spaces (first receiving space and second receiving space) separated by separation walls, allowing the electrode assembly to be segmented into corresponding sections. This segmentation increases the internal surface area contact between the electrode assembly and can walls, improving heat dissipation while maintaining high storage capacity.

Inventive Principle:

Principle #1Segmentation

2Volume of moving object

If the battery is miniaturized to fit electronic devices, then the device size decreases, but the heat dissipation efficiency may be compromised

Engineering Contradiction:

Improvebattery sizeVSAvoidheat radiation

Core Design Contradiction:

Volume of moving objectVSTemperature

Solution Approach 1:

The can incorporates protrusions on its inner wall that extend toward the electrode assembly, creating additional heat dissipation surfaces in the radial dimension. This dimensional enhancement increases the effective heat exchange area without significantly increasing the overall battery volume, maintaining compactness while improving heat radiation efficiency.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

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

This design enhances heat dissipation efficiency by increasing the surface area of the electrode assembly in contact with the can's walls, thereby improving the battery's heat radiation and safety performance.

Implementation Method 1

Heat radiation and dissipation through surfaces of the battery may be an important factor affecting safety

Methodology Applied

Scientific EffectHeat radiation: Thermal Radiation

Implementation Method 2

This design enhances heat dissipation efficiency by increasing the surface area of the electrode assembly in contact with the can's walls

Methodology Applied

Scientific EffectHeat conduction: Conduction (thermal)

Data Source

PatentUS8758927B2Secondary battery

Publication Date: 2014.06.24 SAMSUNG SDI CO LTD

AI summary

A secondary battery including a can having at least two receiving spaces with a separation space therebetween, an electrode assembly received in the receiving spaces of the can, a collector electrically connected to the electrode assembly, and a cap plate coupled to an upper portion of the can to seal the can.