Anode Assembly Contact Strips for Uniform Current Distribution

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Solution Overview

Problem

The performance and reliability of electrochemical cells are hindered by non-uniform current distribution across the anode and cathode interfaces, leading to increased cell voltage and potential membrane damage due to localized current concentration.

Innovation Solution

The implementation of a novel anode assembly featuring V-shaped, U-shaped, or Z-shaped elements outside the anode shell, which are in electrical contact with the anode and provide conductive contact strips coated or cladded with metals like nickel, copper, or iron, ensuring uniform current distribution and electrical continuity between adjacent cells in a stacked electrolyzer configuration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If conventional anode assembly is used, then device complexity is low, but current distribution uniformity deteriorates leading to localized current concentration

Engineering Contradiction:

Improvecurrent distribution uniformityVSAvoidanode assembly structure

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The anode assembly is segmented into multiple functional components: anode current bars, anode supports, and V/U/Z-shaped elements with conductive contact strips. This segmentation allows each component to perform a specific function in distributing current uniformly across the anode interface, resolving the contradiction by achieving precise current control through structured division.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Conductive contact strips made of materials like nickel, copper, or iron are applied locally at critical contact points on the V/U/Z-shaped elements. This local quality enhancement ensures high electrical conductivity and uniform current distribution at the interface, while the overall assembly structure remains relatively simple.

Inventive Principle:

Principle #3Local quality

2Power

If conventional anode assembly is used, then device complexity is low, but cell voltage increases due to non-uniform current flow

Engineering Contradiction:

Improvecell voltageVSAvoidanode assembly structure

Core Design Contradiction:

PowerVSDevice complexity

Solution Approach 1:

The anode assembly divides current distribution into multiple pathways through current bars, supports, and shaped elements. This segmentation creates parallel current flow routes that reduce electrical resistance and voltage drop, achieving lower cell voltage while maintaining structural simplicity through modular design.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

V/U/Z-shaped elements with conductive contact strips act as intermediaries between the anode current bars and the anode interface. These intermediary components ensure smooth current transition and distribution, reducing contact resistance and cell voltage without requiring complex direct connections.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If conventional anode assembly is used, then ease of manufacture is high, but membrane reliability deteriorates due to localized current concentration

Engineering Contradiction:

Improvemembrane reliabilityVSAvoidanode assembly manufacturing

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The anode assembly segments current distribution functions across multiple components, preventing localized current concentration that could damage the membrane. This segmentation protects the membrane through distributed current flow while maintaining manufacturing simplicity through standardized component assembly.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

V/U/Z-shaped elements with conductive contact strips are installed beforehand to cushion and distribute current flow before it reaches the membrane interface. This prior cushioning prevents harmful current concentration from occurring, thereby protecting membrane reliability while using straightforward manufacturing processes.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

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 enhances current distribution, reduces cell voltage, and minimizes membrane damage by providing a uniform current path and maintaining electrical contact between cells, thereby improving the overall performance and reliability of the electrochemical cell.

Implementation Method 1

the conductive contact strips provide electrical continuity between the anode shell of the electrochemical cell with a cathode shell of an adjacent electrochemical cell

Methodology Applied

Scientific EffectElectrical conduction: Conduction (electrical)

Implementation Method 2

each of the bases of the V-shaped, the U-shaped, or the Z-shaped elements is metallurgically attached to the outside of the anode shell bringing it in electrical contact with the anode

Methodology Applied

Scientific EffectElectrical conduction: Conduction (electrical)

Data Source

PatentUS11142834B2Anode assembly, contact strips, electrochemical cell, and methods to use and manufacture thereof

Publication Date: 2021.10.12 CALERA CORP

AI summary

Provided herein are anode assembly, conductive contact strips, electrochemical cells containing the anode assembly and the conductive contact strips, and methods to use and manufacture the same, where the anode assembly includes a plurality of V-shaped, U-shaped, or Z-shaped elements positioned outside the anode shell and in electrical contact with the anode.