Yosifumi Sakaguchi

Title: Yosifumi Sakaguchi: Innovator in Battery Protection Technology

Introduction

Yosifumi Sakaguchi is a notable inventor based in Ome, Japan. He has made significant contributions to the field of battery technology, particularly in the development of protection devices for secondary batteries. His innovative approach has led to the creation of a patent that addresses critical issues related to battery overcharging and overdischarging.

Latest Patents

Sakaguchi holds a patent for a secondary battery protection device designed to prevent overcharge and overdischarge. This protection circuit device features first and second terminals, which allow for the connection of a charger and a load. The device includes a first switch and/or a second switch that can be placed in series with the secondary battery. In charging mode, the second switch remains conductive while the first switch is activated for charging. If the battery experiences overcharging, the first switch is turned off to protect the battery. Conversely, during discharging, the first switch remains conductive, and the second switch is activated. This innovative design ensures that the battery can continue to discharge even if a temporary overdischarge occurs, as long as it does not exceed a predetermined time limit.

Career Highlights

Throughout his career, Yosifumi Sakaguchi has worked with prominent companies in the technology sector. He has been associated with Hitachi Microcomputer System, Ltd. and Hitachi Maxell, Limited. His experience in these organizations has contributed to his expertise in battery technology and innovation.

Collaborations

Sakaguchi has collaborated with notable colleagues in his field, including Eiji Matsumasa and Shinji Tanaka. These partnerships have likely fostered an environment of creativity and innovation, leading to advancements in battery protection technologies.

Conclusion

Yosifumi Sakaguchi's contributions to battery protection technology highlight his role as an innovator in the field. His patent for a secondary battery protection device demonstrates his commitment to enhancing battery safety and efficiency. Through his work and collaborations, he continues to influence the development of advanced battery technologies.