{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9709444","patent":{"patent_number":"US-9709444","title":"Motor controller, electric vehicle, and heat stress estimation method for switching element","assignee":null,"inventors":[],"filing_date":"2015-11-30T00:00:00.000Z","publication_date":"2017-07-18T00:00:00.000Z","cpc_codes":["B60W","B60W","B60W","B60W","B60W","H02M","H02M"],"num_claims":9,"abstract":"The specification is related to a motor controller, a vehicle including the motor controller and a heat stress estimating method for a switching element. The motor controller includes a switching element, a temperature sensor, and a computer. The switching element is configured to convert output electric power of an electric power supply into motor-driving electric power. The temperature sensor is configured to measure a temperature of the switching element. The computer is configured to extract a maximum point and a minimum point in a time-dependent change in the temperature of the switching element, the computer is configured to calculate a temperature difference between the maximum point and the minimum point adjacent to each other and configured to calculate an estimated value of a heat stress to which the switching element is subjected based on each calculated temperature difference."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Motor controller, electric vehicle, and heat stress estimation method for switching element","description":"The specification is related to a motor controller, a vehicle including the motor controller and a heat stress estimating method for a switching element. The motor controller includes a switching elem","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9709444","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9709444","citation_suggestion":"Patentable. \"Motor controller, electric vehicle, and heat stress estimation method for switching element\" (US-9709444). https://patentable.app/patents/US-9709444","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9709444","json":"https://patentable.app/api/llm-context/US-9709444","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T10:18:30.646Z"}