{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8509975","patent":{"patent_number":"US-8509975","title":"Vehicle, method of estimating state of charge of secondary battery, and method of controlling vehicle","assignee":null,"inventors":[],"filing_date":"2008-10-17T00:00:00.000Z","publication_date":"2013-08-13T00:00:00.000Z","cpc_codes":["B60W","B60W","B60W","H02J","B60W","B60W","B60W","H02J"],"num_claims":6,"abstract":"A vehicle comprising a chargeable/dischargeable battery, a current sensor for detecting the current from the battery, and a control unit for estimating the charged state of the battery and controlling the charging/discharging of the battery according to the charged state. In a first operation mode in which charging and discharging cycles are repeated, the control unit estimates the open-circuit voltage of the battery, and determines the charged state on the basis of the value which is obtained by correcting the open-circuit voltage according to the polarization. In a second operation mode in which either one of charging and discharging is continued, the control unit determines the charged state on the basis of the result of integration of the current detected by the current sensor. Hence, the charged and discharged amperehours are large, thereby providing a vehicle which can effectively utilize the secondary battery."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Vehicle, method of estimating state of charge of secondary battery, and method of controlling vehicle","description":"A vehicle comprising a chargeable/dischargeable battery, a current sensor for detecting the current from the battery, and a control unit for estimating the charged state of the battery and controlling","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8509975","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-8509975","citation_suggestion":"Patentable. \"Vehicle, method of estimating state of charge of secondary battery, and method of controlling vehicle\" (US-8509975). https://patentable.app/patents/US-8509975","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8509975","json":"https://patentable.app/api/llm-context/US-8509975","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T17:29:01.681Z"}