System and method for measuring battery impedance
By optimizing charging waveforms based on impedance measurements, the method addresses inefficiencies in conventional battery charging, enhancing efficiency and extending battery life.
JP2026086621APending Publication Date: 2026-05-26IONTRA LLC
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Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- IONTRA LLC
- Filing Date
- 2026-02-06
- Publication Date
- 2026-05-26
AI Technical Summary
Technical Problem
Conventional battery charging technologies face inefficiencies due to uncontrolled harmonics that increase impedance, leading to capacity loss, heat generation, and reduced battery life, while rapid charging systems require expensive electronics and slow charging systems compromise speed.
Method used
A method for determining complex impedance characteristics of batteries during charging, allowing optimization of charging waveforms by adjusting harmonic components to minimize impedance, thereby improving charging efficiency and extending battery life.
Benefits of technology
The method enhances charging efficiency by reducing loss energy, heat generation, and capacity retention, while extending battery life by optimizing charging signals based on impedance measurements.
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Smart Images
Figure 2026086621000001_ABST
Abstract
The present invention provides a system for determining the complex impedance characteristics of one or more batteries based on a charging signal that has been applied to or will be applied to the batteries. [Solution] Embodiments may include measuring the impedance of a battery and, in some cases, determining frequency components or harmonics that define at least a portion of the waveform shape for charging the battery. In one embodiment, the impedance in a battery can be measured or estimated from one discontinuous charging period applied to the battery, or from multiple discontinuous charging periods applied to the battery. The magnitude, phase shift, real and / or imaginary values of the impedance in the battery can be determined or estimated using the measured differences between the amplitude and time components of the voltage and current waveforms.
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