Dana has been granted a patent for methods and systems for an electric drive axle. The system includes an electric machine coupled to a gearbox with a clutch that selectively couples different gear sets for varying gear ratios. This innovation allows for efficient power distribution in vehicles. GlobalData’s report on Dana gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Dana, Differential gear shafts was a key innovation area identified from patents. Dana's grant share as of May 2024 was 50%. Grant share is based on the ratio of number of grants to total number of patents.
Electric drive axle with clutch for gear ratio selection
A recently granted patent (Publication Number: US11999227B2) discloses an electric drive axle system that includes an electric machine connected to a gearbox with a unique clutch mechanism. The gearbox features two planetary gear sets, each selectively engaged by the clutch to achieve different gear ratios. In one position, the clutch couples the carriers of both gear sets, while in another position, it connects the carrier of one gear set to the sun gear of the other. This innovative design allows for seamless transition between higher and lower gear ratios, enhancing the efficiency and performance of the electric drive axle.
Moreover, the patent also details a method for operating the electric drive axle, emphasizing the role of the clutch in transitioning between gear ratio modes. The system includes a controller with instructions to facilitate smooth gear changes based on operator input or vehicle conditions. Additionally, the patent highlights the coaxial arrangement of the electric machine and planetary gear sets, optimizing the overall design of the electric drive axle. With a focus on simplicity and functionality, the patent showcases the potential for advancements in electric vehicle technology, particularly in the realm of drivetrain efficiency and performance.
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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.
GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
