{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9770997","patent":{"patent_number":"US-9770997","title":"Detection of imbalance across multiple battery cells measured by the same voltage sensor","assignee":null,"inventors":[],"filing_date":"2013-06-11T00:00:00.000Z","publication_date":"2017-09-26T00:00:00.000Z","cpc_codes":["H02J","H02J","H02J"],"num_claims":18,"abstract":"A vehicle having a battery pack with cells arranged in at least groups of two cells in series is disclosed. A controller balances the cells based on a change in voltage across the cells being different than an expected change in voltage. The expected value is based on a current and a time associated with charging or discharging the cells. A controller is disclosed that commands charging and discharging of the battery cells based on a difference between a voltage across the group and the expected value for the group. A method for charging and discharging a battery pack is disclosed. The voltage across a group of cells is measured and compared to an expected value. An imbalance in a cell attribute is estimated according to a difference between the measured voltage and the expected voltage. The voltage across each battery cell is not required."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Detection of imbalance across multiple battery cells measured by the same voltage sensor","description":"A vehicle having a battery pack with cells arranged in at least groups of two cells in series is disclosed. A controller balances the cells based on a change in voltage across the cells being differen","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9770997","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-9770997","citation_suggestion":"Patentable. \"Detection of imbalance across multiple battery cells measured by the same voltage sensor\" (US-9770997). https://patentable.app/patents/US-9770997","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9770997","json":"https://patentable.app/api/llm-context/US-9770997","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:58:52.269Z"}