Yoshihisa Tsurumi

Title: **Yoshihisa Tsurumi: Innovator in Electrical Storage Technologies**

Introduction

Yoshihisa Tsurumi hails from Hitachinaka, Japan, and stands out as an accomplished inventor with a portfolio of five patents. His contributions primarily lie in the field of battery technology, focusing on innovations that enhance the efficiency and effectiveness of electrical storage systems.

Latest Patents

Tsurumi’s latest patents demonstrate his expertise in battery design and functionality. One notable invention is a battery pack and method for welding cells. This advanced battery pack features a reduced resistance connection arrangement, wherein battery cells are organized in rows within an insulating case. Each battery cell has electrodes linked through a copper connecting metallic plate, forming a lap joint by joining a positive electrode of one cell to the negative electrode of another. Tsurumi's innovative welding technique uses arc spot welding to create welds at predetermined positions on the connecting metallic plate, ensuring a robust and efficient connection. The design specification stipulates that the weld penetration depth is greater than the thickness of the connecting metallic plate, optimizing overall performance.

Another significant invention is an electrical storage device that comprises a conductive battery house casing, several battery cells securely held within, and a control unit to efficiently manage these cells. The integration of a circuit designed to ensure the electrical connections between the negative terminal and the battery casing showcases Tsurumi's commitment to enhancing safety and operational efficacy in electrical storage devices.

Career Highlights

Throughout his career, Yoshihisa Tsurumi has made significant contributions to the field while working with prominent companies such as Hitachi, Ltd. and Hitachi Vehicle Energy, Ltd. His dedication to innovation has positioned him at the forefront of battery technology development.

Collaborations

Tsurumi has collaborated with notable engineers, including Sadashi Seto and Masuhiro Onishi, sharing insights and expertise that have contributed to advancements in battery technology. These collaborations highlight the importance of teamwork and knowledge sharing in driving innovations forward.

Conclusion

Yoshihisa Tsurumi's contributions to electrical storage technology underscore the impact of dedicated inventors in shaping modern advancements. With a focus on enhancing battery performance and safety through innovative designs, his work continues to influence the evolution of electrical storage devices. As the demand for efficient and reliable power sources grows, Tsurumi's inventions are poised to play a critical role in the future of energy storage solutions.