Location History:
- Mie, JP (1988)
- Fukaya, JP (2002 - 2004)
Company Filing History:
Years Active: 1988-2004
Title: Innovations of Kensuke Hironaka in Battery Technology
Introduction
Kensuke Hironaka is a prominent inventor based in Fukaya, Japan, known for his significant contributions to battery technology. With a total of seven patents to his name, Hironaka has focused on developing non-aqueous electrolytic solution secondary batteries that prioritize safety and efficiency.
Latest Patents
One of Hironaka's latest patents is for a non-aqueous electrolytic solution secondary battery designed to provide high safety while maintaining high capacity and power. This invention features a cylindrical lithium-ion battery housed within a battery lid that includes a cleavage valve, which activates at a predetermined pressure. The battery comprises an electrode winding group made by winding a positive electrode, a negative electrode, and a separator, along with connection portions for linking the electrode winding group to respective electrode terminals. The positive electrode active material used is lithium manganate, which limits the elution of manganese into the non-aqueous electrolytic solution to 5% or less. The negative electrode active material is graphite, which allows for the occlusion and release of lithium ions during charging and discharging.
Another notable patent focuses on a non-aqueous electrolytic secondary battery that prevents power drops during large current discharges. This design features a separator with porosity greater than or equal to that of both the positive and negative electrode mixtures. Specifically, the porosity of the positive electrode mixture ranges from 20% to 50%, while the negative electrode mixture also falls within the same range. The separator's porosity is designed to be between 20% and 60%, enhancing the volume of electrolytic solution that infiltrates the interfacial aperture between the separator and the negative electrode. This innovation allows for efficient lithium-ion release and occlusion, minimizing interfacial resistance during high current discharges.
Career Highlights
Hironaka is currently employed at Shin-Kobe Electric Machinery Co., Ltd., where he continues to advance battery technology. His work has been instrumental in developing safer and more efficient battery solutions, contributing to the growing demand for reliable energy storage systems.
Collaborations
Hironaka collaborates with notable colleagues, including Kenji Nakai and Takeshi Nakano, who share his commitment to innovation in the field of battery technology.
Conclusion
Kensuke Hironaka's contributions to battery technology through his
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