Electrolyzer Cooling Cells for Uniform Temperature Control

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Solution Overview

Problem

Existing electrolyzers face challenges in achieving efficient and scalable hydrogen production while maintaining optimal operating temperatures, which affects their efficiency and compactness.

Innovation Solution

A cassette design for an electrolyzer that incorporates two cooling plates forming a cooling flow path, with electrolyte plates contacting the cooling plates, and a distribution of cooling cells across the plates to ensure uniform cooling and efficient temperature management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If traditional cooling designs are used in electrolyzers, then the structure is simpler, but the temperature control efficiency is insufficient and the system cannot be easily scaled

Engineering Contradiction:
Improvetemperature control efficiencyVSAvoidcooling system structure
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The cooling flow path is divided into multiple cooling cells distributed across the cooling plates in a grid pattern. Each cooling cell has inlet and outlet channels that distribute cooling fluid uniformly across the electrolyte plates, enabling localized and efficient temperature control throughout the electrolyzer system.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The cooling cells are arranged in a two-dimensional grid pattern across the cooling plates, transforming the traditional linear or single-point cooling approach into a distributed two-dimensional cooling network. This dimensional expansion ensures uniform temperature distribution across the entire electrolyte plate surface.

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

2Volume of moving object

If the electrolyzer system is made compact and scalable, then the space utilization improves, but the heat dissipation efficiency may be compromised

Engineering Contradiction:
Improvesystem compactnessVSAvoidheat dissipation efficiency
Core Design Contradiction:
Volume of moving objectVSLoss of energy

Solution Approach 1:

The cooling channels are integrated within the cooling plates themselves, with the cooling flow path nested between the two cooling plates. The electrolyte plates are positioned adjacent to the cooling plates, creating a nested layered structure where cooling and electrolysis functions are combined in a compact arrangement.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

A liquid cooling fluid is circulated through the cooling cells via inlet and outlet channels, using hydraulic flow to efficiently remove heat from the electrolyte plates. The cooling fluid absorbs heat through thermal conduction from the electrolyte plates through the cooling plates, maintaining effective heat dissipation in a compact design.

Inventive Principle:
Principle #29Pneumatics and hydraulics

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

The cassette design enables efficient cooling of the electrolytic fluids, maintaining optimal temperatures for efficient electrolysis, and allows for scalability and compactness of the electrolyzer system.

Implementation Method 1

a cooling fluid flowing through the cooling flow path provides cooling to the electrolytic fluid flowing in each of the electrolyte paths

Methodology Applied
Scientific EffectHeat transfer: Conduction (thermal)

Data Source

PatentUS20250051937A1Cooling cells for cassette for electrolyzer
Publication Date: 2025.02.13 DANFOSS AS
  • US20250051937A1 patent drawing
  • US20250051937A1 patent drawing
  • US20250051937A1 patent drawing

AI summary

A cassette (1) for an electrolyzer includes two cooling plates (2) contacting each other and forming a cooling flow path (5) between them, and two electrolyte plates (3a, 3c), each electrolyte plate (3a, 3c) contacting one of the cooling plates (2). At least a section of the cooling flow path (5) is split into cooling cells (17) each connecting to a cooling cell supply channel (20) via a cooling cell inlet (21) and to a cooling cell return channel (22) via a cooling cell outlet (23), forming a cooling flow path through each cooling cell (17) from the cooling cell inlet (21) to the cooling cell outlet (23). The cooling cells (17) are distributed across the cooling plates (2) along two directions.