Deterioration diagnosis device, control program, and deterioration diagnosis method
The degradation diagnosis device uses existing battery management units to correct time axis shifts in current and voltage waveforms, allowing accurate battery degradation diagnosis without additional hardware, thus reducing costs.
JP2026031170APending Publication Date: 2026-02-24NISSIN ELECTRIC CO LTD +1
Patent Information
- Application Number
- JP2024134528
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2026-02-24
AI Technical Summary
Technical Problem
Conventional methods for diagnosing storage battery degradation require dedicated measuring instruments, leading to high costs while maintaining accuracy, which is undesirable for widespread implementation.
Method used
A degradation diagnosis device that utilizes existing battery management units to acquire current and voltage waveform data, performs time axis correction, and calculates internal resistance to diagnose battery degradation accurately without additional hardware.
Benefits of technology
Enables accurate battery degradation diagnosis at a lower cost by utilizing existing battery management systems, maintaining accuracy through data correction processes.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure 2026031170000001_ABST
Abstract
To implement deterioration diagnosis of a storage battery at low cost while maintaining accuracy.SOLUTION: A deterioration diagnosis device (10) includes a data acquisition unit (11) that acquires current waveform data and voltage waveform data from a battery management unit (22) of a power storage device (20), a first correction processing unit (13) that corrects a deviation of a time axis between the current waveform data and the voltage waveform data, an internal resistance calculation unit (15) that calculates an internal resistance, and a deterioration diagnosis unit (16) that performs deterioration diagnosis based on the internal resistance.SELECTED DRAWING: Figure 1
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Citation Information
Patent Citations
Equivalent circuit synthesis method and device, and circuit diagnostic method
JP2013253784A
Deterioration diagnosis method and deterioration diagnosis device
JP2022175876A