Parallel Ion Exchanger Cartridge Layout for Compact Fuel Cell Cooling

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Solution Overview

Problem

Existing ion exchanger filter devices for fuel cell systems face challenges in maintaining high efficiency and preventing short circuits due to the use of electrically conductive cooling media, while requiring compact designs and high ion exchange capacity.

Innovation Solution

A housing design with multiple ion exchanger cartridges arranged circumferentially and in fluid connection with a central tube, featuring parallel flow paths and concentric inflow and outflow channels, along with a removable connector for easy assembly and sealing, ensuring even flow distribution and efficient ion exchange.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If multiple ion exchanger cartridges are arranged circumferentially in parallel, then the ion exchange capacity is increased, but the device occupies more space

Engineering Contradiction:

Improveion exchange capacityVSAvoiddevice volume

Core Design Contradiction:

Quantity of substanceVSVolume of moving object

Solution Approach 1:

Multiple ion exchanger cartridges are arranged circumferentially around a central tube within a compact housing, nesting multiple functional units in a radial configuration. This allows parallel flow paths through multiple cartridges while maintaining a compact overall volume, effectively increasing ion exchange capacity without proportionally increasing device footprint.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The invention transitions from a single linear flow path to a radial/circumferential arrangement where multiple cartridges are positioned around a central axis. This dimensional reorganization allows parallel processing through multiple cartridges while maintaining a compact cylindrical footprint, effectively utilizing three-dimensional space more efficiently.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Use of energy by moving object

If the cooling medium is electrically conductive, then the heat transfer efficiency is improved, but short circuiting between cells occurs

Engineering Contradiction:

Improveheat transfer efficiencyVSAvoidshort circuiting

Core Design Contradiction:

Use of energy by moving objectVSObject-generated harmful factors

Solution Approach 1:

An ion exchanger cartridge is introduced as an intermediary component between the electrically conductive cooling medium and the fuel cell stack. The ion exchanger selectively removes ions from the cooling medium, reducing its electrical conductivity and preventing short circuits while allowing the medium to maintain its heat transfer function.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The ion exchanger cartridge utilizes porous ion exchange material that allows the cooling medium to flow through while selectively capturing ions. The porous structure provides large surface area for ion exchange reactions, effectively reducing electrical conductivity of the cooling medium while maintaining flow and heat transfer characteristics.

Inventive Principle:

Principle #31Porous materials

3Volume of moving object

If a compact design is implemented, then the device occupies less space, but the ion exchange capacity is reduced

Engineering Contradiction:

Improvedevice volumeVSAvoidion exchange capacity

Core Design Contradiction:

Volume of moving objectVSQuantity of substance

Solution Approach 1:

The ion exchange system is segmented into multiple separate cartridges arranged in parallel around a central tube. Each cartridge contains ion exchange material and provides an independent flow path. This segmentation allows the system to achieve high total ion exchange capacity through parallel processing while maintaining a compact cylindrical footprint by utilizing radial space efficiently.

Inventive Principle:

Principle #1Segmentation

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 solution provides a high-capacity ion exchanger filter device with even pressure loss and efficient ion exchange, occupying less space and allowing for easy installation and maintenance, suitable for use in fuel cell systems and electric charging stations.

Implementation Method 1

a deionization by means of an ion exchanger is necessary

Methodology Applied

Scientific EffectIon exchange: Ion Exchange

Implementation Method 2

a cooling medium flows about the cells

Methodology Applied

Scientific EffectConvection: Convection

Data Source

PatentUS20250319462A1Ion exchanger filter device and ion exchanger cartridge

Publication Date: 2025.10.16 MANN HUMMEL GMBH

AI summary

An ion exchanger filter device comprises a housing comprising a central tube extending in an axial direction, and at least two receiving compartments respectively enclosing at least two ion exchanger cartridges, the at least two receiving compartments being arranged circumferentially and in fluid connection with the central tube, each of the at least two ion exchanger cartridges comprising a cartridge container with a circumferentially extending wall enclosing a receptacle filled with an ion exchanger material, and the circumferentially extending wall comprising one or more outflow ports distributed at or about a circumference of the circumferentially extending wall. The ion exchanger filter further comprises a connector comprising at least one inflow opening and at least one outflow opening for a medium, the connector being in fluid connection to a central opening of the housing. The medium flows through the at least two ion exchanger cartridges in parallel.