Battery Charging Circuit with CPV-Guided Pulse Adaptation
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Solution Overview
Problem
Existing battery charging technologies fail to efficiently minimize charging time and maximize cycle life while reducing degradation mechanisms, leading to suboptimal performance and longevity.
Innovation Solution
Adaptive charging techniques and circuitry that adjust charge current characteristics, such as amplitude, duration, and duty cycle, based on charge pulse voltage (CPV) and its changes, to maintain CPV within predetermined ranges, thereby optimizing charging efficiency and extending battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional charging methods are used, then charging speed is maintained at standard levels, but charging time is extended and battery degradation increases
Solution Approach 1:
The charging current is dynamically adjusted based on real-time monitoring of charge pulse voltage (CPV) and its rate of change. The system transitions from static conventional charging to adaptive charging where current parameters (amplitude, duration, duty cycle) are continuously modified to optimize charging speed while preventing degradation
Solution Approach 2:
The system implements feedback control by monitoring CPV and dCPV/dt during charging, then using this information to adjust subsequent charging parameters. This closed-loop approach enables the system to respond to battery state changes and optimize charging in real-time, reducing total charging time while protecting battery health
2Loss of time
If high charging current is applied, then charging time is reduced, but battery degradation increases and cycle life decreases
Solution Approach 1:
The system changes charging parameters (current amplitude, pulse duration, duty cycle) based on monitored battery response. By adjusting these parameters dynamically rather than maintaining constant high current, the system achieves fast charging without excessive degradation, extending cycle life while reducing charging time
Solution Approach 2:
The charging process uses periodic pulse sequences with varying characteristics. Instead of continuous high current, the system applies periodic charge pulses with optimized amplitude and duration, allowing the battery to respond adaptively and reducing degradation mechanisms while maintaining efficient charging
3Productivity
If adaptive charging based on CPV monitoring is implemented, then charging efficiency is optimized and cycle life is extended, but system complexity increases
Solution Approach 1:
The battery effectively monitors its own state through CPV response to charge pulses, and the system uses this self-provided information to adjust charging. The battery's electrical response serves as its own diagnostic signal, eliminating the need for complex internal sensors while enabling adaptive charging that improves efficiency and extends cycle life
Data Source
AI summary
The present inventions, in one aspect, are directed to techniques and/or circuitry to applying a charge pulse to the terminals of the battery during a charging operation, measure a plurality of voltages of the battery which are in response to the first charge pulse, determine a charge pulse voltage (CPV) of the battery, wherein the charge pulse voltage is a peak voltage which is in response to the first charge pulse, determine whether the CPV of the battery is within a predetermined range or greater than a predetermined upper limit value and adapt one or more characteristics of a charge packet if the CPV is outside the predetermined range or is greater than a predetermined upper limit value.