Hiroaki Ogata

Title: Hiroaki Ogata: Inventor in Battery Protection and Mobility

Introduction

Hiroaki Ogata is an inventor associated with Iwata, Japan, and Yamaha Hatsudoki Kabushiki Kaisha. His work includes inventions related to battery protection and power-assisted mobility. His patent portfolio includes 5 patents.

Latest Patents

One of Ogata’s latest patents is an overcurrent protection device. The invention limits the duty factor used in pulse-width modulation according to a specified maximum. By keeping the current instruction within that limit, the device helps prevent a secondary battery from discharging beyond its safe current level, which can help protect battery life.

Another patent concerns a power-assisted wheelchair, a manually operated vehicle that provides electric assistance in response to the user’s input force. The disclosed designs adjust assistance according to factors such as speed and operating conditions. Assistance may be stronger at low speeds, remain steady at higher speeds, and decrease beyond a set speed. Some embodiments also provide regenerative braking when the vehicle travels too fast and adjust the force sensor’s dead band to balance easier startup with responsive operation while moving.

Career Highlights

Ogata’s patent work reflects an interest in practical engineering challenges, including protecting rechargeable batteries and improving the usability and performance of powered mobility devices. His inventions address both electrical control and the interaction between a vehicle and its operator.

Collaborations

Ogata is associated with Yamaha Hatsudoki Kabushiki Kaisha, commonly known as Yamaha Motor Co., Ltd. His listed coworkers include Masaya Suenari and Atsushi Uchiyama.

Conclusion

Hiroaki Ogata’s inventions span battery overcurrent protection and power-assisted wheelchair technology, illustrating his contributions to safer energy use and more adaptable mobility.