{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11973439","patent":{"patent_number":"US-11973439","title":"Control device and control method for power conversion device","assignee":null,"inventors":[],"filing_date":"2022-01-06T00:00:00.000Z","publication_date":"2024-04-30T00:00:00.000Z","cpc_codes":["H02M","H02M","H02M","H02M"],"num_claims":3,"abstract":"Between positive and negative electrode ends of battery 50, fuse 51, main contactor 52 and electrolytic capacitor C21 are connected in series. Between positive and negative electrode ends of electrolytic capacitor C21, inverter 54 in which upper phase side EFT (54U, 54V, 54W) and lower phase side FET (54X, 54Y, 54Z) are bridge-connected is connected. Resistor R1 for precharging electrolytic capacitor C21 is connected to main contactor 52 in parallel. The resistance value of resistor R1 is set so that in a precharging period until a key switch is turned on after battery 50 is connected, when the upper phase side FET is OFF-controlled and the lower phase side EFT is ON-controlled, the charge voltage value of electrolytic capacitor C21 is set to be able to limit a gate-source voltage of the upper phase side FET to a voltage at which the upper phase side FET is not turned on."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Control device and control method for power conversion device","description":"Between positive and negative electrode ends of battery 50, fuse 51, main contactor 52 and electrolytic capacitor C21 are connected in series. Between positive and negative electrode ends of electroly","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11973439","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-11973439","citation_suggestion":"Patentable. \"Control device and control method for power conversion device\" (US-11973439). https://patentable.app/patents/US-11973439","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11973439","json":"https://patentable.app/api/llm-context/US-11973439","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T02:40:03.618Z"}