Thin Laminated Battery Assembly for Miniaturized Electronics

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Solution Overview

Problem

Conventional batteries are large, making it difficult to integrate them into miniaturized electronic devices without increasing the device's size, and there is a need for efficient manufacturing techniques to produce thin batteries.

Innovation Solution

A battery assembly is created using first and second electrodes disposed in substrate sections, with an adhesive bonding them and an electrolyte in between, along with current collectors and terminals for connectivity, which can be integrated into a package substrate assembly and manufactured using techniques like screen printing and folding of substrates.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If conventional batteries are used, then battery capacity is sufficient, but battery size becomes large and difficult to integrate into miniaturized electronic devices

Engineering Contradiction:
Improvebattery sizeVSAvoidbattery capacity
Core Design Contradiction:
Volume of moving objectVSQuantity of substance

Solution Approach 1:

The battery is divided into multiple thin layers (first substrate section, second substrate section) separated by an adhesive layer, creating a laminated structure. This segmentation allows the battery to achieve sufficient capacity through increased surface area while maintaining a thin overall profile suitable for miniaturized devices.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent transitions from a conventional single-volume battery design to a multi-layer planar structure. By stacking electrodes and substrates in multiple layers with an adhesive separator, the battery achieves capacity through two-dimensional expansion rather than three-dimensional volume increase, resulting in a thin profile.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Volume of moving object

If thin battery design is implemented, then space utilization in electronic devices is improved, but manufacturing complexity increases

Engineering Contradiction:
Improvebattery thicknessVSAvoidmanufacturing process complexity
Core Design Contradiction:
Volume of moving objectVSDevice complexity

Solution Approach 1:

The adhesive layer serves multiple functions simultaneously: it bonds the first and second substrate sections together, acts as a separator between electrodes, and helps define the chamber structure. This merging of multiple functions into a single component simplifies the overall manufacturing process despite the thin design.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The adhesive component performs multiple roles including structural bonding, electrical isolation, and chamber formation. This multi-functionality reduces the number of separate components needed, thereby simplifying assembly processes while maintaining the thin battery profile.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Volume of moving object

If thin battery assembly is created, then integration into electronic devices is easier, but structural strength may be compromised

Engineering Contradiction:
Improvebattery thicknessVSAvoidstructural integrity
Core Design Contradiction:
Volume of moving objectVSStrength

Solution Approach 1:

The battery structure is segmented into multiple reinforced layers (first substrate section, adhesive layer, second substrate section) that work together to provide structural integrity. Each layer contributes to the overall strength, allowing the thin battery to maintain adequate structural properties for device integration.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The battery employs a composite structure combining different materials (substrate materials, adhesive material, electrode materials) in a laminated configuration. This composite design leverages the strengths of each material to achieve both thinness and structural integrity suitable for electronic device integration.

Inventive Principle:
Principle #40Composite materials

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 solution allows for the integration of thin batteries into electronic devices, enhancing space utilization and enabling efficient assembly methods, resulting in a compact battery assembly with improved electrical performance and flexibility.

Implementation Method 1

an adhesive that bonds the first substrate section to the second substrate section

Methodology Applied
Scientific EffectAdhesion: Adhesive

Implementation Method 2

an electrolyte disposed in the chamber between the first and second electrodes

Methodology Applied
Scientific EffectIonic conduction: Conduction (electrical)

Implementation Method 3

a first current collector that is configured to collect current from the first electrode and a second current collector that is configured to collect current from the second electrode

Methodology Applied
Scientific EffectElectrical conduction: Conduction (electrical)

Data Source

PatentUS11764392B2Battery assembly and method of manufacturing the same
Publication Date: 2023.09.19 ANALOG DEVICES INC
  • US11764392B2 patent drawing
  • US11764392B2 patent drawing
  • US11764392B2 patent drawing

AI summary

A battery assembly is disclosed. The battery assembly can include a first electrode disposed in a first substrate section and a second electrode disposed in a second substrate section. The battery assembly can also include an adhesive that bonds the first substrate section to the second substrate section. The adhesive partially defines a chamber between the first and second electrodes. The battery assembly can also include an electrolyte disposed in the chamber between the first and second electrodes.