Foldable Battery Pack for Asymmetric Space Utilization

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Solution Overview

Problem

Conventional battery designs for portable electronic devices are rectangular, leading to wasted space and an unsightly form factor, as they do not efficiently utilize the available space between internal components and the device casing, resulting in larger and less aesthetically pleasing devices.

Innovation Solution

A foldable battery configuration comprising multiple cells arranged on a sheet that can be folded into various shapes, allowing optimal fit within the device, with sets of cells connected by a defined connector to create a curved form factor that aligns with internal components and the casing, maximizing space utilization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If a rectangular battery design is used, then the battery structure is simple and easy to manufacture, but it wastes space between the battery and device casing, resulting in larger device form factor

Engineering Contradiction:
Improvebattery volumeVSAvoidbattery structure complexity
Core Design Contradiction:
Volume of moving objectVSEase of manufacture

Solution Approach 1:

The battery is divided into multiple individual cells that can be independently arranged and folded. This segmentation allows the battery to conform to irregular spaces within the device while maintaining manufacturing simplicity through modular assembly of standard cells.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The battery cells are nested together in a folded configuration, with cells arranged in layers that can be compacted into the available space between internal components and the device casing, maximizing space utilization.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Shape

If a rectangular battery design is used, then the manufacturing process is straightforward, but the device form factor becomes larger and less aesthetically pleasing due to wasted space

Engineering Contradiction:
Improvebattery form factorVSAvoidbattery configuration complexity
Core Design Contradiction:
ShapeVSDevice complexity

Solution Approach 1:

The battery configuration transitions from a rigid rectangular form to a dynamic folded structure that can adapt to the device's internal space constraints. The folded design allows the battery to assume different shapes based on the available space between components.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The battery cells are arranged in a flexible folded configuration rather than a rigid rectangular structure, allowing the battery to conform to the curved form factor of the device and eliminate wasted space while maintaining structural integrity.

Inventive Principle:
Principle #30Flexible shells and thin films

3Area of stationary object

If space is wasted between the battery and device casing to accommodate a rectangular battery, then the battery structure remains simple, but the device appears larger and less appealing

Engineering Contradiction:
Improvedevice form factorVSAvoidbattery assembly complexity
Core Design Contradiction:
Area of stationary objectVSEase of manufacture

Solution Approach 1:

The battery cells are arranged in an asymmetric folded configuration that matches the asymmetric space available between internal components and the device casing, eliminating wasted space and achieving a compact curved form factor.

Inventive Principle:
Principle #4Asymmetry

Data Source

PatentUS9401502B2Battery pack
Publication Date: 2016.07.26 NOKIA TECHNOLOGIES OY
  • US9401502B2 patent drawing
  • US9401502B2 patent drawing
  • US9401502B2 patent drawing

AI summary

In some example embodiments, a battery described herein includes a plurality of foldable cells, that when folded takes the form of an asymmetric battery that can utilize available space within a portable electronic device and further is configured to present a curved form factor. In some example embodiments, the apparatus includes a first set of cells and a second set of cells. The first set of cells and the second set of cells are disposed on a sheet that is foldable such that the first set of cells and the second set of cells form a folded battery configuration.