Company Filing History:
Years Active: 1997
Title: Innovations by Daniel Welsh in Battery Charging Technology
Introduction
Daniel Welsh is an accomplished inventor based in Solana Beach, California. He has made significant contributions to the field of battery charging technology. His innovative approach focuses on enhancing the efficiency and regulation of battery charging through advanced methods.
Latest Patents
Welsh holds a patent for a "Method and apparatus for controlling battery charging current." This invention features an automatic photovoltaic controller that provides a fixed frequency, pulse width modulated charging current to charge and regulate a battery. The system controls the duty cycle of the charging current based on the difference between the sensed battery voltage and a desired regulated voltage. Modulation is achieved by managing the on and off states of multiple parallel-connected FET switches placed in series between the photovoltaic array and the battery. The duty cycle is adjustable in discrete steps from 0% to 100% and is updated frequently with new battery voltage measurements to ensure precise regulation. The charge current pulse rise time is tailored to match the response time of the photovoltaic array. The fixed frequency of the charge current is maintained within the preferred range of 100 Hz to 600 Hz, allowing sufficient time for the chemical reactions within the battery cells to complete between charge pulses. The controller also features automatic protection mechanisms that rapidly disconnect the battery and/or load under specified conditions. Additionally, the photovoltaic array is disconnected from the battery at night to prevent battery discharge into the array. Equalization of the battery occurs automatically at a voltage level slightly higher than the regulated voltage after a predetermined number of days or if the battery voltage falls below a certain threshold.
Career Highlights
Welsh is currently employed at Morningstar Corporation, where he continues to develop innovative solutions in battery technology. His work has contributed to advancements in renewable energy applications and battery management systems.
Collaborations
Welsh collaborates with Kenneth F Gerken, leveraging their combined expertise to drive innovation in their field.
Conclusion
Daniel Welsh's contributions to battery charging technology exemplify the impact of innovative thinking in renewable energy. His patent reflects a commitment to improving battery efficiency and regulation, showcasing the potential for advancements in this critical area.