Location History:
- Ibaraki, JP (1988 - 2017)
- Osaka, JP (1994 - 2020)
Company Filing History:
3 out of 1,112 
2 out of 8,782 
1 out of 52 Years Active: 1988-2020
Title: Keiichi Tanii: Innovator in Lithium Ion Battery Technology
Introduction
Keiichi Tanii is a prominent inventor based in Ibaraki, Japan. He has made significant contributions to the field of battery technology, particularly in lithium ion secondary batteries. With a total of 6 patents to his name, Tanii's work has advanced the efficiency and reliability of battery systems.
Latest Patents
One of Tanii's latest patents is a lithium ion secondary battery charging control method and charging mechanism. This innovation provides a method to determine the life of lithium ion batteries with greater accuracy and a simpler configuration. The charging control method calculates an integrated value of the number of charge cycles. It includes adding a predetermined value to this integrated value if both the residual voltage before charging and the elapsed time since the last charge meet specific criteria. This method allows for a more precise estimation of the battery's lifespan.
Another notable patent is related to a battery unit design. This design features a flat battery that includes a cylindrical positive electrode can and a cylindrical negative electrode can. The configuration allows for efficient use of space and improved performance. The substrate is mounted with circuit components, enhancing the functionality of the battery unit.
Career Highlights
Throughout his career, Keiichi Tanii has worked with notable companies such as Hitachi Maxell, Limited and Sanyo Electric Co., Ltd. His experience in these organizations has contributed to his expertise in battery technology and innovation.
Collaborations
Tanii has collaborated with several talented individuals in his field, including Masatoshi Hashimoto and Kyohei Takeuchi. These collaborations have fostered a creative environment that has led to significant advancements in battery technology.
Conclusion
Keiichi Tanii's contributions to lithium ion battery technology have made a lasting impact on the industry. His innovative patents and collaborations with esteemed colleagues highlight his dedication to advancing battery efficiency and reliability. Tanii's work continues to influence the future of energy storage solutions.