{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9643502","patent":{"patent_number":"US-9643502","title":"Method and apparatus to monitor an on-vehicle battery charger","assignee":null,"inventors":[],"filing_date":"2015-04-15T00:00:00.000Z","publication_date":"2017-05-09T00:00:00.000Z","cpc_codes":["H02J","H02J","H02J","H02J","H02J","H02J","H02J"],"num_claims":14,"abstract":"A method for monitoring an on-vehicle battery charger includes estimating a charging efficiency of the battery charger. Upon achieving an indeterminate result related to the estimated charging efficiency of the battery charger, a commanded input power to the battery charger and an electric power at the on-vehicle battery during operation of the battery charger are determined. Flow of electric current through the battery charger is interrupted, and electric power flow from the on-vehicle battery is determined. An active charging efficiency of the battery charger is determined based upon the commanded input power to the battery charger, the electric power at the on-vehicle battery during operation of the battery charger and the monitored electric power flow from the on-vehicle battery when the flow of electric current through the battery charger is interrupted. Charging performance of the battery charger is evaluated based upon the active charging efficiency."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus to monitor an on-vehicle battery charger","description":"A method for monitoring an on-vehicle battery charger includes estimating a charging efficiency of the battery charger. Upon achieving an indeterminate result related to the estimated charging efficie","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9643502","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-9643502","citation_suggestion":"Patentable. \"Method and apparatus to monitor an on-vehicle battery charger\" (US-9643502). https://patentable.app/patents/US-9643502","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9643502","json":"https://patentable.app/api/llm-context/US-9643502","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T08:29:35.388Z"}