Location History:
- Shizuoka-ken, JP (1997)
- Susono, JP (1999)
Company Filing History:
Years Active: 1997-1999
Title: Ryo Kumagai: Innovator in Battery Technology
Introduction
Ryo Kumagai is a notable inventor based in Shizuoka-ken, Japan. He has made significant contributions to the field of battery technology, holding a total of 3 patents. His work focuses on improving the measurement and management of battery residual capacity, which is crucial for enhancing battery performance and longevity.
Latest Patents
Kumagai's latest patents include a battery residual capacity measuring system and a battery remaining capacity measuring device. The battery residual capacity measuring system processes collected sets of amperage and voltage data to estimate the residual capacity for normal travel conditions. It also calculates a third value representing the residual capacity under high load conditions, allowing for better monitoring of battery performance. The battery remaining capacity measuring device utilizes a voltage sensor and a current sensor to detect the terminal voltage and current flowing through a load. It employs a voltage-current changing tendency calculation unit to output dispersed data and a voltage-current approximating line calculation unit to determine a linear function for the voltage-current relationship, ultimately calculating the remaining capacity of the battery.
Career Highlights
Kumagai is currently employed at Yazaki Corporation, where he continues to innovate in the field of battery technology. His work has been instrumental in developing systems that enhance the efficiency and reliability of battery usage in various applications.
Collaborations
Throughout his career, Kumagai has collaborated with notable colleagues, including Kenichi Shimoyama and Youichi Arai. These collaborations have contributed to the advancement of battery technology and the successful development of his patented inventions.
Conclusion
Ryo Kumagai is a prominent figure in battery technology, with a focus on improving the measurement of battery residual capacity. His innovative patents and contributions to Yazaki Corporation highlight his commitment to advancing this critical field.