Mazda Motor. has filed a patent for an inverter design integrating an electric component portion with a cooling portion. The switching module includes a heat sink attached to a substrate, with a common mode current suppression structure for electrical insulation. GlobalData’s report on Mazda Motor 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 Mazda Motor, Collision avoidance system was a key innovation area identified from patents. Mazda Motor's grant share as of January 2024 was 27%. Grant share is based on the ratio of number of grants to total number of patents.

Integrated inverter with cooling portion for electric components

Source: United States Patent and Trademark Office (USPTO). Credit: Mazda Motor Corp

The patent application (Publication Number: US20240032266A1) describes an innovative inverter design that includes an electric component portion housing an electronic component with a switching module and an integrated cooling portion. The switching module consists of an insulating layer with an electronic circuit, a heat sink with heat receiving and radiation portions, and a common mode current suppression structure. This structure includes an insulating member to electrically insulate the heat sink and cooler from each other, ensuring efficient operation and safety.

Furthermore, the inverter design includes various configurations such as insulating case covers, insulating frame members, and electric conductive layers embedded in the insulating member to enhance the common mode current suppression structure. The patent also details the use of cooling oil or water as the refrigerant in the electric conductive cooler, providing flexibility in cooling options. By incorporating these features, the inverter aims to improve performance, reliability, and safety in electronic components, particularly in applications where common mode current suppression is crucial. Overall, the patent presents a comprehensive and innovative approach to inverter design with a focus on efficient cooling and electrical insulation for enhanced functionality.

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