Foldable Hardware Layout for Higher Battery Capacity in Thin Devices

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Solution Overview

Problem

Foldable electronic devices face a trade-off between maximizing display size and battery life due to limited internal volume and battery capacity, as thinner devices often compromise on battery size for reduced thickness.

Innovation Solution

Repositioning the power control module underneath the display control module within the internal cavity, allowing battery cell tabs to extend in an unfolded configuration, thereby increasing battery capacity and reducing the device's dimensional profile.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If the battery capacity is increased to extend battery life, then the device thickness increases

Engineering Contradiction:
Improvebattery lifeVSAvoiddevice thickness
Core Design Contradiction:
Duration of action of moving objectVSLength of stationary object

Solution Approach 1:

The patent reconfigures the internal hardware layout by positioning the power control module underneath the display control module along the Z-axis, and arranging battery cell tabs in an unfolded configuration extending along the Y-axis. This dimensional reorganization allows the battery to occupy more internal volume without increasing device thickness, thereby extending battery life while maintaining a thin profile.

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

Solution Approach 2:

The power control module is positioned underneath the display control module, creating a nested arrangement where components are stacked vertically. This nesting approach maximizes the use of internal cavity volume along the Z-axis, allowing the battery to extend further along the Y-axis and increase capacity without increasing overall device thickness.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Area of stationary object

If the display size is maximized, then the internal cavity volume for battery placement is reduced

Engineering Contradiction:
Improvedisplay sizeVSAvoidinternal cavity volume
Core Design Contradiction:
Area of stationary objectVSVolume of stationary object

Solution Approach 1:

By changing the arrangement of battery cell tabs from a folded to an unfolded configuration and positioning the power control module underneath the display control module, the patent utilizes the Z-axis vertical space more effectively. This allows the battery to occupy more volume within the same internal cavity, accommodating larger battery capacity without reducing display size.

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

3Length of stationary object

If the device thickness is reduced, then the battery capacity decreases

Engineering Contradiction:
Improvedevice thicknessVSAvoidbattery capacity
Core Design Contradiction:
Length of stationary objectVSQuantity of substance

Solution Approach 1:

The patent maintains thin device profile by organizing components along the Z-axis (power control module underneath display control module) and extending the battery along the Y-axis through unfolded cell tab configuration. This dimensional strategy allows maximum battery capacity within the constrained thickness, achieving both thin form factor and adequate battery life.

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

Solution Approach 2:

The flexible arrangement of battery cell tabs in an unfolded configuration allows the battery to adapt to the available internal cavity space, maximizing capacity utilization within the thin device envelope. This dynamic spatial arrangement optimizes the balance between thickness and battery capacity.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12628284B2Internal hardware configurations within foldable electronic devices
Publication Date: 2026.05.12 GOOGLE LLC
  • US12628284B2 patent drawing
  • US12628284B2 patent drawing
  • US12628284B2 patent drawing

AI summary

This document describes systems and techniques directed at internal hardware configurations for foldable devices. In aspects, a foldable electronic device includes a housing, defining an internal cavity within which a battery is disposed, and one or more displays that are fixed to the housing, forming at least one internal cavity. The foldable electronic device further includes one or more battery cell tabs that are arranged in an unfolded configuration and extend from the battery to a power control module positioned underneath a display control module that is mounted to the display. Through such a configuration, an internal volume within the internal cavity can be more-efficiently occupied by increasing a battery capacity or reducing a dimensional profile of the foldable electronic device.