Battery Pack Reinforcement Plate Heat Sealing

Solution Overview

Problem

The existing battery pack structures require additional adhesive sheets or tapes for attaching metal reinforcement plates, which reduces work efficiency and reliability.

Innovation Solution

A reinforcement plate composed of a metal layer and a heat sealing layer, where the heat sealing layer is made of thermoplastic or thermosetting resin, is attached to the battery cell using heat welding, eliminating the need for additional adhesives and enhancing coupling force.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a metal reinforcement plate is used to strengthen the battery cell, then the strength and reliability are improved, but additional adhesive sheets or tapes are required which increases device complexity and reduces work efficiency

Engineering Contradiction:

Improvereinforcement plate strengthVSAvoidattachment structure complexity

Core Design Contradiction:

StrengthVSDevice complexity

Solution Approach 1:

The reinforcement plate merges two functions into one component: the metal layer provides structural strength while the heat sealing layer provides attachment functionality. This combines the reinforcement function and the adhesive attachment function into a single integrated component, eliminating the need for separate adhesive sheets or tapes and reducing device complexity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The reinforcement plate uses a composite structure with a metal layer (steel, stainless steel, or aluminum) for strength and a heat sealing layer (thermoplastic or thermosetting resin) for bonding. This composite material approach allows the single component to achieve both mechanical reinforcement and reliable attachment without requiring additional adhesive materials.

Inventive Principle:

Principle #40Composite materials

2Reliability

If additional adhesive sheets or tapes are used to attach the reinforcement plate, then the attachment is achieved, but work efficiency is reduced due to multiple components and steps

Engineering Contradiction:

Improveattachment reliabilityVSAvoidwork efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The reinforcement plate merges two functions into one component: the metal layer provides structural strength while the heat sealing layer provides attachment functionality. This combines the reinforcement function and the adhesive attachment function into a single integrated component, eliminating the need for separate adhesive sheets or tapes and reducing device complexity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The heat sealing layer extracts the adhesive attachment function from separate adhesive materials and integrates it directly into the reinforcement plate structure. This allows the reinforcement plate to be attached directly to the battery cell through heat sealing without requiring additional adhesive sheets or tapes, thereby improving work efficiency.

Inventive Principle:

Principle #2Taking out (Extraction)

3Strength

If a metal reinforcement plate is used, then the strength is improved, but the attachment process becomes more complex requiring additional materials

Engineering Contradiction:

Improvebattery cell strengthVSAvoidattachment process simplicity

Core Design Contradiction:

StrengthVSEase of manufacture

Solution Approach 1:

The reinforcement plate uses a composite structure with a metal layer (steel, stainless steel, or aluminum) for strength and a heat sealing layer (thermoplastic or thermosetting resin) for bonding. This composite material approach allows the single component to achieve both mechanical reinforcement and reliable attachment without requiring additional adhesive materials.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The heat sealing layer replaces the need for mechanical adhesive attachment systems with a thermal bonding process. By using heat sealing technology, the reinforcement plate can be directly bonded to the battery cell through melting and bonding of the heat sealing layer, eliminating the need for separate adhesive materials and simplifying the manufacturing process.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 configuration improves the reliability and quality of the battery pack by providing increased strength and efficient attachment of the reinforcement plate to the battery cell and top cover, enhancing the overall product quality.

Implementation Method 1

A reinforcement plate composed of a metal layer and a heat sealing layer, where the heat sealing layer is made of thermoplastic or thermosetting resin, is attached to the battery cell using heat welding

Methodology Applied

Scientific EffectHeat welding: Welding

Data Source

PatentUS8846222B2Battery pack

Publication Date: 2014.09.30 SAMSUNG SDI CO LTD

AI summary

A battery pack including a reinforcement plate having a metal layer and a heat sealing layer, wherein the reinforcement plate is attached to a battery cell to reinforce the battery cell, thus improving reliability regarding product quality. The battery pack includes a battery cell, a circuit module electrically connected to the battery cell, a top cover installed on an upper portion of the battery cell, and a reinforcement plate attached to the battery cell.