Abstract: This article analyzes the development of battery swapping technology for electric heavy-duty trucks from a patent perspective. Based on global patent data analysis, it explores the patent development trends in the field of heavy-duty truck battery swapping, delves deeply into the changes in application volume, application regions, and applicants, and at the same time sorts out the characteristics, representative enterprises, and core patents of three mainstream battery swapping technology routes. Provide data references for the high-quality development of heavy-duty truck battery swapping technology in our country.