Lead Sulfate Removal Pulses for Low-Power Battery Desulfation

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Solution Overview

Problem

Existing lead sulfate coating removal devices have high power consumption and can damage electrodes, with excessive reverse current levels, and there is a need to increase the peak value of the removal signal without increasing power consumption.

Innovation Solution

A lead sulfate coating removal device implemented by an application-specific digital integrated circuit (ASIC) generates a removal signal with a peak value of 550 mA to 1000 mA, pulse width of 5 nsec to 100 nsec, and frequency of 5 kHz to 50 kHz, using a digital integrated circuit to optimize power consumption and prevent electrode damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the peak value of the removal signal is increased to improve lead sulfate coating removal efficiency, then the removal efficiency is improved, but the power consumption of the device increases

Engineering Contradiction:

Improvelead sulfate coating removal efficiencyVSAvoidpower consumption

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent applies parameter changes by optimizing the pulse width and frequency of the removal signal. Specifically, it uses a pulse width of 5 nsec to 100 nsec and a frequency of 5 kHz to 50 kHz, which allows achieving effective lead sulfate coating removal with a controlled peak current of 550 mA to 1000 mA, thereby improving removal efficiency while maintaining power consumption within acceptable limits

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs periodic action by using pulsed current instead of continuous current. The removal signal is applied in periodic pulses with specific width and frequency parameters, which enables effective coating removal while reducing overall power consumption compared to continuous high-current application

Inventive Principle:

Principle #19Periodic action

2Productivity

If the reverse current level is increased to improve lead sulfate coating removal, then the removal efficiency is improved, but the electrodes are damaged

Engineering Contradiction:

Improvelead sulfate coating removal efficiencyVSAvoidelectrode damage

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent applies parameter changes by precisely controlling the peak current within the range of 550 mA to 1000 mA and using short pulse widths of 5 nsec to 100 nsec. This controlled parameter approach ensures sufficient current density for effective lead sulfate removal while limiting the total energy exposure to prevent electrode damage

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses partial action by applying current in short pulses rather than continuous exposure. The pulse width of 5 nsec to 100 nsec provides just enough current exposure to remove lead sulfate coatings effectively without excessive current application that would cause electrode damage

Inventive Principle:

Principle #16Partial or excessive action

3Ease of manufacture

If an analog circuit is used to generate the removal signal, then the device can be implemented with conventional technology, but the peak value of the removal signal is limited to 1000 mA at most due to power consumption constraints

Engineering Contradiction:

Improvedevice implementation easeVSAvoidpeak value of removal signal

Core Design Contradiction:

Ease of manufactureVSPower

Solution Approach 1:

The patent substitutes analog circuit implementation with a digital integrated circuit. This substitution enables more precise control over current parameters, allowing the device to achieve peak values of 550 mA to 1000 mA with optimized pulse characteristics while maintaining power consumption within acceptable limits, overcoming the inherent limitations of analog circuit approaches

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 device effectively removes lead sulfate coatings without damaging the electrodes, achieves low power consumption, and can be downsized, while exceeding the temperature reduction goals of previous technologies.

Implementation Method 1

a generation unit that generates, on the basis of a signal extracted from the lead-acid battery, a removal signal of the lead sulfate coating having a peak value of 550 mA to 1000 mA, a pulse width of 5 nsec to 100 nsec, and a frequency of 5 kHz to 50 kHz

Methodology Applied

Scientific EffectPulse signal generation:

Data Source

PatentUS20250343282A1Lead sulfate coating removal device, lead sulfate coating removal system, and lead sulfate coating removal method

Publication Date: 2025.11.06 POWER SUPPORT

AI summary

[Problem] An object is to provide a lead sulfate coating removal device that has low power consumption and does not damage an electrode of a lead-acid battery.[Solution]A lead sulfate coating removal device implemented by an application specific integrated circuit (ASIC) that removes a lead sulfate coating generated on an electrode of a lead-acid battery includes: a generation unit that generates, on the basis of a signal extracted from the lead-acid battery, a removal signal of the lead sulfate coating having a peak value of 550 mA to 1000 mA, a pulse width of 5 nsec to 100 nsec, and a frequency of 5 kHz to 50 kHz; and a supply unit that supplies the removal signal generated by the generation unit to the electrode of the lead-acid battery.