Pool Cleaner Charging Contacts with Corrosion-Mitigating Devices

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Solution Overview

Problem

Traditional charging systems for automatic swimming pool cleaners (APCs) face issues with corrosion of electrical contacts due to exposure to water and environmental factors, leading to compromised charging efficiency, safety hazards, and reduced battery life.

Innovation Solution

The development of a charging system with corrosion-mitigating devices, including drying devices and coupling systems, that minimize or prevent corrosion by drying electrical contacts before charging and allowing for easy removal and replacement of contacts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional charging contacts are used in water environment, then charging function is achieved, but corrosion occurs leading to reduced reliability and safety hazards

Engineering Contradiction:
Improvecharging efficiencyVSAvoidcorrosion
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces an intermediary substance (corrosion mitigating device) between the electrical contact and the corrosive environment. This device acts as a protective barrier that prevents direct contact between the electrical contact and corrosive elements such as water, chlorine, and salt, thereby maintaining charging efficiency while preventing corrosion.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent employs disposable or replaceable corrosion mitigating devices that can be easily replaced when worn or depleted. These sacrificial protective elements are designed to be consumed or degraded instead of the expensive electrical contacts, providing economical corrosion protection while maintaining system reliability.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

2Ease of operation

If electrical contacts remain wet during charging, then charging process is simple, but corrosion risk increases and safety hazards occur

Engineering Contradiction:
Improvecharging simplicityVSAvoidcorrosion risk
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent implements preliminary action by pre-drying or pre-protecting the electrical contacts before the charging process begins. The corrosion mitigating device is applied in advance to create a protective barrier, ensuring that the contacts are not wet or exposed to corrosive elements during charging, thus maintaining both simplicity and safety.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent introduces an intermediary drying or protective mechanism that mediates between the wet environment and the electrical contact. This intermediary device absorbs moisture or creates a hydrophobic barrier, allowing charging to proceed safely without direct water contact, thereby maintaining ease of operation while eliminating corrosion risks.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If corrosion-resistant materials are used for electrical contacts, then reliability improves, but manufacturing complexity and cost increase

Engineering Contradiction:
Improvecontact durabilityVSAvoidmanufacturing complexity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent segments the corrosion protection function from the electrical contact itself. Instead of making the entire contact assembly complex and expensive, the solution divides the system into a simple electrical contact and a separate corrosion mitigating device. This segmentation allows the contact to remain simple for manufacturing while the protective device handles corrosion resistance.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent uses an intermediary corrosion mitigating device rather than requiring the electrical contact material itself to be highly corrosion-resistant. This intermediary approach allows the use of standard, easily manufactured electrical contacts while adding a separate layer of protection that is applied or attached to the contact surface.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Stability of the object's composition

If charging contacts are permanently fixed, then connection stability is maintained, but replacement and maintenance become difficult

Engineering Contradiction:
Improveconnection stabilityVSAvoidcontact replacement
Core Design Contradiction:
Stability of the object's compositionVSEase of repair

Solution Approach 1:

The patent segments the charging contact system into modular components that can be independently replaced. The corrosion mitigating device is designed as a separate, replaceable element that can be easily removed and replaced without affecting the permanent structural connections, thus maintaining connection stability while enabling easy maintenance.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements a discarding and recovering strategy where the corrosion mitigating device is designed to be easily removed, replaced, or regenerated. The permanent structural connections are maintained while the consumable protective elements can be discarded and replaced, facilitating easy repair and maintenance without compromising connection stability.

Inventive Principle:
Principle #34Discarding and recovering

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 proposed solution effectively reduces corrosion of electrical contacts, enhances charging efficiency, improves safety by minimizing shock hazards, and extends the life of batteries and charging system components.

Implementation Method 1

The corrosion-mitigating device may include a drying device for drying and/or removing water from the electrical contact prior to charging of the one or more batteries

Methodology Applied
Scientific EffectAbsorption: Absorption (physical)

Implementation Method 2

The corrosion-mitigating device may include a drying device for drying and/or removing water from the electrical contact prior to charging of the one or more batteries

Methodology Applied
Scientific EffectEvaporation: Evaporation

Data Source

PatentUS20250113961A1Automatic swimming pool cleaner charging systems with improved charging contacts
Publication Date: 2025.04.10 ZODIAC POOL CARE EURO
  • US20250113961A1 patent drawing
  • US20250113961A1 patent drawing
  • US20250113961A1 patent drawing

AI summary

A charging system for an automatic swimming pool cleaner may a corrosion-mitigating device for an electrical contact. Additionally, or alternatively, a charging system for an automatic swimming pool cleaner may include a charging pin. In some embodiments, the charging system includes a charging pin that is externally removable from the automatic swimming pool cleaner or from a charging station for the automatic swimming pool cleaner.