As the demand for electric vehicles (EVs) continues to surge, innovations in electric motor technology play a pivotal role in shaping the future of transportation.
Patent Trends in the Electric Vehicle Industry
The International Energy Agency has observed exponential growth in the EV sector due to factors like improved range, wider model availability, and increased performance. Despite the pandemic, major car markets witnessed a record high of 6.6 million EV sales in 2021. While countries like the United States lead the way, emerging nations are gradually embracing this industry through grants, subsidies, and tax rebates. As the EV landscape evolves, companies worldwide are racing to file patents for new inventions.
Innovations Beyond Batteries
While battery technology remains at the heart of the EV industry, other critical areas are also witnessing patent activity. These include the braking system, steering system, and arrangement of propulsion. Additionally, aspects like chassis and arrangement of batteries hold immense potential for revolutionising both the EV and automotive sectors.
Global Collaboration and Technological Shifts
Unlike traditional automotive technology, the EV sector fosters collaboration between firms, innovators, and competitors. The unique requirements for manufacturing EVs have led to a global network of expertise. Companies from the United States, China, Japan, Korea, Germany, Canada, and Australia are at the forefront of patent applications, driving technological advancements.
New Electronic Vehicle (EV) Patents
– Porsche’s Unique Charging Port Design
Porsche’s unique charging port design for electric vehicles (EVs) represents a significant advancement in EV technology. The design focuses on efficiency and user experience, aiming to provide a reliable and rapid charging solution.
Porsche’s patent involves a method where alternating current (AC) voltage from an electricity source is transformed into a prescribed AC voltage level by at least one transformer, which then routes the voltage via AC lines to multiple charging stations. This innovative approach allows for a quick and simple provision of high current or voltage when needed, catering to the growing demand for fast and efficient EV charging infrastructure.
The patent reflects Porsche’s commitment to enhancing the EV user experience and is part of a broader trend in the automotive industry towards embracing electric mobility.
– Ford’s Rotor Magnet Temperature Detection
Ford’s Rotor Magnet Temperature Detection patent for electric vehicles (EVs) introduces a method and system for actively monitoring the temperature of rotor magnets in permanent magnet synchronous motors (PMSMs). Unlike traditional approaches that embed temperature sensors within the rotor, Ford’s innovation eliminates the need for such sensors. Instead, the system leverages existing motor parameters—such as line currents, line voltage, rotor speed, and motor inductance—to calculate the rotor temperature. By avoiding sensor integration, Ford enhances system reliability and simplifies motor design, potentially leading to improved efficiency and longevity.
The heart of this patent lies in its ability to detect rotor magnet temperature without physical sensors. The system utilises a preset rotor permanent magnet temperature expression, incorporating relevant motor parameters. As the motor operates, the controller commands the injection of a direct-axis (d-axis) current while the motor spins, allowing it to actively detect the back electromotive force (BEMF) voltage. This dynamic approach ensures accurate temperature estimation, contributing to optimal motor performance and durability in Ford’s EV lineup.
J C Bamford Excavators Ltd Off-Highway Control System
J C Bamford Excavators Ltd introduces a control system for off-highway working machines. This system calculates travel energy thresholds, potentially optimising energy usage in heavy-duty applications.
JCB’s Off-Highway Control System represents a leap forward in intelligent machinery management. It enhances productivity, safety, and energy efficiency, making it a valuable addition to the world of off-highway equipment.
What’s Ahead for EV Patents?
The electric vehicle (EV) industry is poised for exciting developments in patent trends. The EV sector fosters collaboration across borders. Countries like the United States, China, Japan, Korea, Germany, Canada, and Australia are actively filing patents. This global network of expertise drives technological advancements.
As the EV landscape evolves, patents will continue to play a pivotal role in shaping the industry, driving efficiency, sustainability, and electrifying our roads.