Primary Cell Voltage Recovery via Sine Curve Impulses

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Solution Overview

Problem

Primary cells, once used, are typically discarded due to perceived complete discharge, despite still having residual capacitance, leading to waste and environmental pollution, as they are considered non-rechargeable and unable to supply sufficient voltage for modern electronic devices.

Innovation Solution

A method involving a device with a reading circuit, control circuit, stimulating circuit, and voltage transforming and rectifying circuit that applies sine curve impulses to primary cells to recover voltage, adjusting the impulse frequency based on the voltage recovery percentage, allowing the chemical substance to react completely and stabilize, thereby extending the cell's usable life.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If primary cells are discarded after single use, then manufacturing simplicity and ease of operation are maintained, but resource waste and environmental pollution increase

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidresource waste
Core Design Contradiction:
Ease of manufactureVSLoss of substance

Solution Approach 1:

The patent applies the discarding and recovering principle by enabling the recovery of residual chemical energy in primary cells through controlled reverse current application. The system reads the cell's remaining capacity, applies reverse polarity current to reactivate unreacted chemical substances, and restores the cell to functional voltage levels, thereby recovering resources that would otherwise be discarded.

Inventive Principle:
Principle #34Discarding and recovering

Solution Approach 2:

The patent utilizes parameter changes by altering the electrical parameters (current direction, voltage levels, pulse duration) applied to the cell during the recovery process. The system dynamically adjusts these parameters based on the cell's initial state and recovery progress, transforming the cell's chemical state from depleted to reactive.

Inventive Principle:
Principle #35Parameter changes

2Quantity of substance

If primary cells are charged repeatedly, then resource utilization is improved, but the cell structure and chemical stability deteriorate

Engineering Contradiction:
Improveresource utilizationVSAvoidcell stability
Core Design Contradiction:
Quantity of substanceVSReliability

Solution Approach 1:

The patent applies partial action by performing only the necessary minimum recovery operation - applying reverse current just enough to reactivate unreacted chemical substances and restore functional voltage, rather than attempting full recharging. This partial intervention extends cell life without subjecting the cell structure to excessive stress.

Inventive Principle:
Principle #16Partial or excessive action

Solution Approach 2:

The system employs periodic action by applying reverse current in controlled pulses with specific timing intervals, rather than continuous current application. The controller reads cell voltage at intervals and applies stimulation pulses periodically, allowing the cell chemistry to stabilize between pulses and preventing overheating or structural damage.

Inventive Principle:
Principle #19Periodic action

3Loss of substance

If voltage recovery is attempted on fully discharged cells, then resource waste is reduced, but the risk of cell damage or safety hazards increases

Engineering Contradiction:
Improveenergy wasteVSAvoidcell damage risk
Core Design Contradiction:
Loss of substanceVSObject-affected harmful factors

Solution Approach 1:

The patent applies preliminary action by performing a non-invasive reading of the cell's remaining capacity and voltage state before applying any recovery current. The controller assesses whether the cell has sufficient residual chemical substances to respond to recovery stimulation, and only proceeds with voltage recovery if the preliminary assessment indicates safety and potential for successful recovery.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system implements feedback control by continuously monitoring cell voltage, current, and temperature during the recovery process. The controller adjusts the recovery parameters in real-time based on feedback from the cell's response, and terminates the recovery process if abnormal conditions are detected, thereby preventing cell damage while maximizing energy recovery.

Inventive Principle:
Principle #23Feedback

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 method effectively recovers the voltage of used primary cells to their standard level, enabling their reuse and reducing waste, thus conserving resources and minimizing environmental impact by extracting remaining energy from seemingly spent cells.

Implementation Method 1

imposing sine curve impulse once every 1-3 seconds to excite chemical substance in the cells

Methodology Applied
Scientific EffectElectrochemical reactions: Redox Reactions

Data Source

PatentUS7612523B2Method of recovering voltage of a primary cell and its device
Publication Date: 2009.11.03 PROMORE ENVIRONMENT & ENERGY
  • US7612523B2 patent drawing
  • US7612523B2 patent drawing
  • US7612523B2 patent drawing

AI summary

A method of recovering voltage of a primary cell and its device. The method of steps of reading a cell to obtain start voltage, capacitance and number of the cells to be recovered, of imposing sine curve impulse once every 1-3 second on the positive pole of the cell(s) for stimulating chemical substance in the cell(s), of imposing sine curve impulse once every 5-7 seconds when the voltage recovery reaches 70%, of imposing sine curve impulse once every 10-12 seconds when the voltage recovery reaches more than 90%, and of changing sine curve impulse into a small stream of impulse when the voltage recovery reaches more than 99% for stabilizing the chemical substance in the cell(s). The device includes a reading circuit, a stimulating circuit, a control circuit, a control circuit and a voltage transforming and rectifying circuit.