{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8478469","patent":{"patent_number":"US-8478469","title":"Power source system for electric powered vehicle and control method therefor","assignee":null,"inventors":[],"filing_date":"2009-08-07T00:00:00.000Z","publication_date":"2013-07-02T00:00:00.000Z","cpc_codes":["H02J"],"num_claims":12,"abstract":"At the time of external charging, an external charging relay is turned on, and a system main relay is turned off. Therefore, a main battery can be charged by electric power from an external power source, without applying an output voltage of the main battery to a PCU. At the time of external charging, basically, a power supply voltage for an auxiliary system (low voltage system) is generated by a sub DC/DC converter of a small capacity, while a main DC/DC converter of a large capacity used when vehicle is running is stopped. Only when the output of sub DC/DC converter is insufficient to cover the power consumption by the auxiliary system, an ECU operates the main DC/DC converter. Therefore, ECU and auxiliary load group can be operated reliably while efficiency of external charging is improved."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Power source system for electric powered vehicle and control method therefor","description":"At the time of external charging, an external charging relay is turned on, and a system main relay is turned off. Therefore, a main battery can be charged by electric power from an external power sour","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8478469","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-8478469","citation_suggestion":"Patentable. \"Power source system for electric powered vehicle and control method therefor\" (US-8478469). https://patentable.app/patents/US-8478469","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8478469","json":"https://patentable.app/api/llm-context/US-8478469","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T12:21:02.501Z"}