This inventor holds 4 USPTO granted patents and 3 published patent applications and 9 EPO patents. Top assignees: Scania Cv Ab, Man Truck & Bus Se., Traton Ab. Active years: 2022-2026.
Company Filing History:
3 out of 527 
1 out of 66 
1 out of 5 Years Active: 2022-2026
Title: Innovations by Gunnar Ledfelt
Introduction
Gunnar Ledfelt is a notable inventor based in Nykvarn, Sweden. He has made significant contributions to the field of power supply circuits, particularly in the context of hybrid and electrified vehicles. With a total of 4 patents to his name, Ledfelt's work showcases his expertise and innovative spirit.
Latest Patents
One of Gunnar Ledfelt's latest patents is a power supply circuit and a method for controlling a power supply circuit. This invention relates to a power supply circuit of a vehicle, which includes a first side comprising a power source, a first battery pack, and first power consumers. The second side is connected in series with the first side and includes a second battery pack and second power consumers. An overload current breaker is provided between the two sides, which has a predetermined threshold breaking current value. The controller regulates the voltage from the power source and monitors the charging current to ensure safe operation.
Another significant patent is a method and arrangement for the protection of access to live parts when charging hybrid or electrified vehicles. This arrangement prevents access to live parts in charging contact sockets by using blind plugs that can be inserted into the sockets. The system is designed to sense the presence of either an electric plug or a blind plug, ensuring safety during the charging process.
Career Highlights
Gunnar Ledfelt has worked with prominent companies in the automotive industry, including Scania CV AB and MAN Truck & Bus SE. His experience in these organizations has allowed him to develop and refine his innovative ideas in power supply technology.
Collaborations
Throughout his career, Ledfelt has collaborated with talented individuals such as Jean-Baptiste Billot and Robert Jadeborg. These partnerships have contributed to the advancement of his projects and innovations.
Conclusion
Gunnar Ledfelt's contributions to the field of power supply circuits demonstrate his commitment to innovation and safety in hybrid and electrified vehicles. His patents reflect a deep understanding of the complexities involved in modern automotive technology.