Denso‘s patent describes a stator featuring a core, multiple windings, and a busbar with a flat conductor body. The busbar includes a main body and radially extending protruding portions, which are laser welded to the coil end portions, with the protruding portions being thicker than the main body. GlobalData’s report on Denso 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 Denso, Battery management systems was a key innovation area identified from patents. Denso's grant share as of June 2024 was 51%. Grant share is based on the ratio of number of grants to total number of patents.
Stator with laser-welded busbar and protruding portions
The patent US12046973B2 describes a stator designed for enhanced performance in electrical machines. The stator comprises a core, multiple windings, and a busbar that connects the coil end portions of the windings. The busbar features a flat conductor body with a main body portion extending circumferentially and multiple protruding portions that extend radially. Notably, the protruding portions are thicker in the direction of the laser beam used for welding, compared to the main body thickness. This design aims to improve the integrity and efficiency of the connections made during the laser welding process.
Further claims detail the structural characteristics of the protruding portions, including variations in thickness and shape, which contribute to the overall functionality of the stator. The design includes specific arrangements of the stator windings and conductors, ensuring that the components align properly for effective operation. The busbar is formed through press molding, resulting in a rounded edge that enhances its connection to the coil end portions. This innovative approach to stator design aims to optimize performance while ensuring robust connections between components, which is critical for the reliability of electrical machines.
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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.
