Dynamic Battery Charging via Real-Time Parameter Feedback

Solution Overview

Problem

Existing battery charging systems do not adequately account for changes in battery condition and ambient conditions, leading to unnecessary stress and suboptimal recharge times, as they employ fixed charge schemes that do not consider depth of discharge or ambient changes.

Innovation Solution

A dynamic battery charging scheme that continuously measures cell and ambient parameters during charging, adjusts energy supply based on real-time data, and uses reference information to optimize charge rate parameters, minimizing thermal and overcharge stress by dynamically varying charge current and voltage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If rapid recharge systems are used to quickly return batteries to required charge levels, then recharge time is reduced, but battery damage occurs due to overheating and overcharging

Engineering Contradiction:

Improverecharge timeVSAvoidbattery damage from thermal stress and saturation stress

Core Design Contradiction:

Loss of timeVSObject-affected harmful factors

Solution Approach 1:

The patent applies dynamics by transitioning from fixed predetermined charge parameters to dynamic parameters that continuously adapt based on real-time battery conditions. The charge current and voltage are dynamically adjusted according to measured temperature, state of charge, and battery response, allowing rapid recharge while preventing thermal and saturation stress through continuous adaptation to changing battery states.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent implements feedback by continuously measuring battery parameters (temperature, voltage, current) during charging and using this information to adjust charge parameters. The system monitors battery response to supplied energy and modifies charge current accordingly, creating a closed-loop control system that prevents overcharging and overheating while maintaining rapid recharge capability.

Inventive Principle:

Principle #23Feedback

2Device complexity

If fixed charge schemes with predetermined parameters are used, then charging is simple to implement, but the schemes do not account for changes in battery condition and ambient conditions leading to unnecessary stress

Engineering Contradiction:

Improvecharging system complexityVSAvoidunnecessary battery stress

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The patent applies dynamics by transitioning from fixed predetermined charge parameters to dynamic parameters that continuously adapt based on real-time battery conditions. The charge current and voltage are dynamically adjusted according to measured temperature, state of charge, and battery response, allowing rapid recharge while preventing thermal and saturation stress through continuous adaptation to changing battery states.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent implements feedback by continuously measuring battery parameters (temperature, voltage, current) during charging and using this information to adjust charge parameters. The system monitors battery response to supplied energy and modifies charge current accordingly, creating a closed-loop control system that prevents overcharging and overheating while maintaining rapid recharge capability.

Inventive Principle:

Principle #23Feedback

3Productivity

If fixed charge schemes are used, then the charging process is straightforward, but recharge times are suboptimal due to lack of adaptation to actual battery conditions

Engineering Contradiction:

Improverecharge efficiencyVSAvoidcharging control complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent applies dynamics by transitioning from fixed predetermined charge parameters to dynamic parameters that continuously adapt based on real-time battery conditions. The charge current and voltage are dynamically adjusted according to measured temperature, state of charge, and battery response, allowing rapid recharge while preventing thermal and saturation stress through continuous adaptation to changing battery states.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent implements feedback by continuously measuring battery parameters (temperature, voltage, current) during charging and using this information to adjust charge parameters. The system monitors battery response to supplied energy and modifies charge current accordingly, creating a closed-loop control system that prevents overcharging and overheating while maintaining rapid recharge capability.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS8040110B2Stress management of battery recharge, and method of state of charge estimation

Publication Date: 2011.10.18 EATON INTELLIGENT POWER LTD

AI summary

One or more cells are charged by measuring one or more cell parameters or changes in said cell parameters, inputting the measured cell parameter(s) or changes in cell parameters into a state of charge estimation model, obtaining a state of charge of the cell(s) from the state of charge estimation model, selecting an allowable temperature rise for the cell(s), determining a charge parameter in accordance with the state of charge of the cell(s) and in accordance with the selected allowable temperature rise for the cell(s), and supplying energy to the cell(s) in accordance with the determined charge parameter. The invention may be embodied as methods, apparatus and computer program products.