18487624. METHOD AND SYSTEM FOR ESTIMATING SHORT CIRCUIT RESISTANCE IN BATTERY USING OPEN CELL VOLTAGE simplified abstract (SAMSUNG ELECTRONICS CO., LTD.)
Contents
METHOD AND SYSTEM FOR ESTIMATING SHORT CIRCUIT RESISTANCE IN BATTERY USING OPEN CELL VOLTAGE
Organization Name
Inventor(s)
Sivagaminathan Balasubramanian of Bengaluru (IN)
Myeongjae Lee of Suwon-si (KR)
METHOD AND SYSTEM FOR ESTIMATING SHORT CIRCUIT RESISTANCE IN BATTERY USING OPEN CELL VOLTAGE - A simplified explanation of the abstract
This abstract first appeared for US patent application 18487624 titled 'METHOD AND SYSTEM FOR ESTIMATING SHORT CIRCUIT RESISTANCE IN BATTERY USING OPEN CELL VOLTAGE
Simplified Explanation
The method described in the patent application involves estimating the short circuit resistance in a battery by analyzing the open cell voltage (OCV) of the battery under different conditions. Here are the key points of the innovation:
- Determining the rest period OCV of the battery during a rest period.
- Calculating the no-short OCV of the battery under a no-short condition based on specific parameters and the battery's state-of-health (SoH) and temperature.
- Identifying the presence of an internal short in the battery based on the no-short OCV and rest period OCV, and extending the rest period accordingly.
- Determining the extended OCV of the battery for the extended rest period based on parameters, SoH, and temperature.
- Estimating the short circuit resistance based on the no-short OCV, parameters, and extended OCV.
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- Potential Applications
This technology could be applied in the field of battery management systems for electric vehicles, renewable energy storage systems, and portable electronic devices.
- Problems Solved
This innovation helps in accurately estimating the short circuit resistance in batteries, which is crucial for preventing safety hazards and optimizing battery performance.
- Benefits
- Enhanced safety by detecting internal shorts in batteries. - Improved battery performance and longevity through precise resistance estimation.
- Potential Commercial Applications
1. Battery manufacturers can integrate this technology into their quality control processes. 2. Electric vehicle companies can use this innovation to enhance the safety and efficiency of their battery systems.
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- Possible Prior Art
One potential prior art could be the use of impedance spectroscopy techniques to analyze battery performance and internal resistance.
- Unanswered Questions
- How does this method compare to traditional battery testing techniques?
The article does not provide a direct comparison with traditional battery testing methods, leaving room for further exploration of the advantages and limitations of this innovation.
- What are the specific parameters used to calculate the no-short OCV and extended OCV?
The patent application mentions predetermined parameters, SoH, and temperature as factors in the calculations, but the exact values and formulas are not detailed in the abstract. Further information on these parameters would be beneficial for a deeper understanding of the technology.
Original Abstract Submitted
A method of estimating a short circuit resistance in a battery using open cell voltage (OCV) includes: determining a rest period OCV for a rest period of the battery; determining a no-short OCV of a no-short condition based on a predetermined parameter, a first state-of-health (SoH) parameter, and a first temperature of the battery; determining that an internal short is present in the battery based on the no-short OCV and the rest period OCV, and based thereon extending the rest period of the battery; determining an extended OCV of the battery for the extended rest period based on the predetermined parameter, a second SoH parameter, and a second temperature of the battery; and estimating the short circuit resistance based on the no-short OCV, the predetermined parameter, and the extended OCV.
