{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11990598","patent":{"patent_number":"US-11990598","title":"Heat activated multiphase fluid-operated pump for battery temperature control","assignee":null,"inventors":[],"filing_date":"2021-09-10T00:00:00.000Z","publication_date":"2024-05-21T00:00:00.000Z","cpc_codes":["H01L","H01L"],"num_claims":15,"abstract":"A heat-activated pump regulates the temperature of a battery or motor. For a battery, an evaporator has fluid passageways arranged in a serpentine path or multiple parallel paths, in direct contact with battery cells. For a motor, the passageways wrap around its casing or within. Working fluid in the passageways is converted to vapor. Whenever a target pressure is exceeded, a pressure-control valve allows vaporized working fluid to escape into a liquid-piston chamber, where it expands adiabatically and displaces pumped liquid, expelling it in a pumping stage from the liquid-piston chamber through a check valve into a condenser. Another check valve allows the pumped liquid to return in a suction stage to the chamber. An injector valve between the liquid-piston chamber and the evaporator returns jets of condensed working fluid to the evaporator in successive brief spurts responsive to periodic pressure pulses in the liquid-piston chamber."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Heat activated multiphase fluid-operated pump for battery temperature control","description":"A heat-activated pump regulates the temperature of a battery or motor. For a battery, an evaporator has fluid passageways arranged in a serpentine path or multiple parallel paths, in direct contact wi","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11990598","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-11990598","citation_suggestion":"Patentable. \"Heat activated multiphase fluid-operated pump for battery temperature control\" (US-11990598). https://patentable.app/patents/US-11990598","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11990598","json":"https://patentable.app/api/llm-context/US-11990598","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T01:31:47.813Z"}