This inventor holds 2 USPTO granted patents. Top assignee: Hong Kong Applied Science and Technology Research Institute. Active years: 2016.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2016
Title: Po Wah Chang: Innovator in Battery Technology
Introduction
Po Wah Chang is a notable inventor based in Hong Kong, CN. He has made significant contributions to the field of battery technology, holding 2 patents that showcase his innovative approach to energy management.
Latest Patents
One of his latest patents is a serial multi-battery charger with independent simultaneous charge and discharge. This invention features a battery matrix with switches controlled by a microcontroller that reads voltages between batteries. It determines the charging status of each battery, allowing for simultaneous charging and discharging currents. The design prevents over-charging by blocking charging currents from fully-charged batteries while allowing discharging currents to flow. This innovative approach enhances the efficiency and safety of battery management systems.
Another significant patent is an LED driver with small output ripple that does not require a high-voltage primary-side electrolytic capacitor. This power converter reduces output ripple while extending product lifetime. It employs Primary-Side Regulation (PSR) using an auxiliary winding to provide a regulated secondary voltage. A bang-bang controller manages the secondary side current, effectively reducing current ripple despite voltage fluctuations. This invention represents a leap forward in power conversion technology.
Career Highlights
Po Wah Chang is currently associated with the Hong Kong Applied Science and Technology Research Institute. His work at this esteemed institution has allowed him to focus on cutting-edge research and development in battery technology.
Collaborations
He collaborates with talented coworkers such as Chik Wai (David) Ng and Kwok Kuen (David) Kwong. Their combined expertise contributes to the advancement of innovative solutions in their field.
Conclusion
Po Wah Chang's contributions to battery technology through his patents reflect his commitment to innovation and excellence. His work continues to influence the industry and pave the way for future advancements in energy management.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile