{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11971457","patent":{"patent_number":"US-11971457","title":"Method for measuring AC impedance of battery in composite power supply power system","assignee":null,"inventors":[],"filing_date":"2021-11-05T00:00:00.000Z","publication_date":"2024-04-30T00:00:00.000Z","cpc_codes":["H02J","H02J","H02J","H02J"],"num_claims":10,"abstract":"The present invention relates to a method for measuring the AC impedance of a battery in a composite power supply power system, comprising the following steps: determining the AC disturbance signal amplitude, operating the DC/DC voltage converter to generate the AC disturbance signal, collecting the output signals of the fuel cell and the lithium battery, calculating the output power of the fuel cell and the lithium battery; calculating the demand power of the load, and when the demand power is stable, calculating the impedance of the lithium battery and the fuel cell separately, otherwise, only the impedance of the fuel cell is calculated."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method for measuring AC impedance of battery in composite power supply power system","description":"The present invention relates to a method for measuring the AC impedance of a battery in a composite power supply power system, comprising the following steps: determining the AC disturbance signal am","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11971457","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-11971457","citation_suggestion":"Patentable. \"Method for measuring AC impedance of battery in composite power supply power system\" (US-11971457). https://patentable.app/patents/US-11971457","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11971457","json":"https://patentable.app/api/llm-context/US-11971457","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T12:48:02.979Z"}