Coplanar Electrochemical Cell for Varying Current Loads

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Solution Overview

Problem

Conventional electrochemical cells with coplanar electrodes reach performance limits when powering components with different current requirements, leading to increased production costs and circuit area usage due to the need for separate energy sources.

Innovation Solution

An electrochemical cell configuration featuring a first electrode of one polarity and two or more electrodes of the same opposite polarity, arranged coplanarly on a non-conductive substrate with an ionically conductive electrolyte, allowing for efficient energy distribution and adaptation to specific energetic requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If separate electrochemical cells are used to power components with different current requirements, then the current requirements of each component can be met, but the production cost increases and the circuit surface area increases

Engineering Contradiction:
Improvecurrent requirement adaptationVSAvoidnumber of electrochemical cells
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The invention divides a single electrochemical cell into multiple independent electrode systems, where each system consists of a first electrode of one polarity and a second electrode of opposite polarity. These systems share a common electrolyte layer but can be electrically isolated through the non-conductive substrate, allowing each system to independently power components with different current requirements while maintaining a compact single-cell structure.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If separate electrochemical cells are used to power components with different current requirements, then the current requirements of each component can be met, but the production cost increases

Engineering Contradiction:
Improvecurrent requirement adaptationVSAvoidproduction cost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The invention merges multiple electrode systems into a single integrated electrochemical cell structure. All systems share common components including the electrolyte layer, the non-conductive substrate, and the sealing structure, while maintaining electrical isolation between positive and negative electrodes through the substrate. This consolidation reduces the total number of separate cells needed, simplifying manufacturing and reducing production costs.

Inventive Principle:
Principle #5Merging (Combining)

3Adaptability or versatility

If multiple separate electrochemical cells are used, then components with different current requirements can be powered, but the required surface area of the circuit increases

Engineering Contradiction:
Improveenergy supply capabilityVSAvoidcircuit surface area
Core Design Contradiction:
Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The invention utilizes the third dimension (vertical stacking) to accommodate multiple electrode systems within a single planar footprint. By stacking electrode layers vertically and using a non-conductive substrate for isolation, the design achieves multiple independent power sources without proportionally increasing the circuit's surface area, thus maintaining compactness while providing diversified energy supply capability.

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 configuration enables efficient energy supply to components with varying current needs, reducing production costs and optimizing substrate area usage by allowing independent operation and tailored energy delivery.

Implementation Method 1

This ion current is ensured by an ionically conductive electrolyte

Methodology Applied
Scientific EffectIon conduction: Conduction (electrical)

Implementation Method 2

During the discharge of an electrochemical cell, an energy-releasing chemical reaction takes place, consisting of two electrically coupled but spatially separated partial reactions

Methodology Applied
Scientific EffectElectrochemical reaction: Redox Reactions

Data Source

PatentEP3680981B1Electrochemical cell and assembly of electrically interconnected components
Publication Date: 2023.03.01 VARTA MICROBATTERY GMBH
  • EP3680981B1 patent drawingFigure 1A~1D

AI summary

An electrochemical cell (10) comprises a first electrode (10a) of a first polarity, a second electrode (10b) of a second polarity opposite to the first, and a third electrode (10c) of the same polarity as the second electrode (10b). The first, second, and third electrodes (10a, 10b, 10c) are arranged separately in a coplanar arrangement adjacent to one another on the surface of a substrate (12). The first electrode (10a) is connected to the second and third electrodes (10b, 10c) via an ion-conducting electrolyte (10d). It can be used in circuits (11) to supply power to electrical components (20, 30).