Toilet Power Generation Using Flush-Tank Electrochemical Cells
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Solution Overview
Problem
Existing power generation systems for toilets are complex, bulky, and expensive, and there is a need for a mechanism to provide continuous soft lighting in bathrooms without incurring long-term costs, as well as a way to alert users when toilet paper is running low.
Innovation Solution
A power generation system utilizing a cell with concentric cylinders made of dissimilar metals in a liquid medium, such as a toilet flush tank, combined with wind turbines, solar panels, and piezoelectric generators to power LEDs and other features, including an alert system for low toilet paper, without relying on an electrical grid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional power sources (battery or home electricity system) are used to power continuous soft lighting in bathrooms, then the lighting function is achieved, but long-term operational costs increase
Solution Approach 1:
The patent implements self-service by using a chemical cell with dissimilar metal electrodes (such as zinc and copper) that automatically generates electrical energy from the chemical energy stored in the electrolyte solution. The system powers itself without external connections to electrical grids or battery replacements, converting the chemical energy naturally present in the toilet's water system into usable electrical power for lighting and other electronic features.
Solution Approach 2:
The patent replaces mechanical/electrical power systems (batteries, electrical grids) with a chemical energy conversion system. The chemical cell uses electrochemical reactions between dissimilar metals and the electrolyte to generate electricity, substituting the need for mechanical battery systems or electrical wiring infrastructure with a simpler chemical energy conversion mechanism.
2Adaptability or versatility
If conventional power sources are used for portable toilets to power electronic features, then the electronic features function properly, but the system becomes complex and bulky
Solution Approach 1:
The chemical cell provides self-service power generation within the portable toilet system, eliminating the need for external battery packs, charging cables, or power management electronics. The cell automatically converts chemical energy from the onboard water system into electrical energy, simplifying the overall system architecture while enabling multiple electronic features.
Solution Approach 2:
The chemical cell serves multiple functions: it provides electrical power for lighting, sensors, actuators, radios, video displays, and USB charging ports. A single chemical energy conversion system replaces what would otherwise require multiple separate power sources, reducing system complexity while maintaining versatility.
3Adaptability or versatility
If conventional power sources are used for portable toilets to enable mobility, then the toilet can be completely disconnected from power grid, but electronic features cannot be powered
Solution Approach 1:
The chemical cell enables the portable toilet to be completely self-sufficient, generating all necessary electrical power from its own onboard chemical energy stores. This eliminates dependence on external power grids while maintaining full functionality of electronic features, achieving true portability with complete energy independence.
4Power
If existing power generation systems (electrodes in flush tank, piezo materials in seat/floor) are used, then power can be generated, but the systems become complex, bulky, and expensive
Solution Approach 1:
The patent merges the power generation function with the existing toilet water system by using the electrolyte solution already present in the flush tank or bowl. Instead of adding separate power generation systems (piezo materials, additional electrodes), the invention combines the chemical energy conversion directly with the existing water storage and delivery infrastructure, simplifying the overall system.
Solution Approach 2:
The chemical cell uses the electrolyte solution that is already part of the toilet's normal operation (water from the flush tank or bowl). The system converts the chemical energy already present in this solution into electrical power, making the existing water system serve dual purposes: sanitation function and energy generation, thereby reducing overall system complexity.
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 system provides sustainable and cost-effective power for toilet features, including continuous lighting and an alert for low toilet paper, using available energy sources like water, wind, and pressure, reducing the need for external power sources and minimizing costs.
Implementation Method 1
a cell with concentric cylinders made of dissimilar metals in a liquid medium, such as a toilet flush tank
Implementation Method 2
combined with wind turbines, solar panels, and piezoelectric generators to power LEDs and other features
Implementation Method 3
combined with wind turbines, solar panels, and piezoelectric generators to power LEDs and other features
Implementation Method 4
combined with wind turbines, solar panels, and piezoelectric generators to power LEDs and other features
Implementation Method 5
power the improvement... The cell may have two concentric cylinders, and one of the two concentric cylinders made of a first metal and the other of the two concentric cylinders made of a second metal... connected to the LED anode and the inner concentric coil is connected to the LED cathode
Data Source
AI summary
Power generation devices and methods for use with toilets is disclosed. A number of power generation devices are provided that can be used in combination to power various features in a toilet which will be particularly useful for portable toilets that are off the grid. The power generation devices and methods include, for example, using a cell battery inside a toilet water source, a wind turbine, solar panels, and piezoelectricity. The features include, for example, lighting up the toilet with light-emitting diodes (LEDs) to make it easier for users to find the toilet, an audio/video setup for entertainment, and a toilet status light indicator to let the next user know when the toilet paper is out.