Abnormal battery cell voltage detection circuitry
Patent 5302902 Issued on April 12, 1994. Estimated Expiration Date: 
April 26, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 26, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3846773 Battery monitor circuit Automatic voltage imbalance detector Battery scanning system Lithium battery protection circuit Battery monitoring and condition indicator system for multi-battery pack Battery voltage measurement system Monitoring system for batteries during charge and discharge Patent #: 5206578 InventorAssigneeApplicationNo. 691908 filed on 04/26/1991US Classes:324/434, To determine plural cell condition324/426, Using a battery testing device340/636.15, By voltage340/636.16, Having load detail340/636.19Battery deterioration detectionExaminersPrimary: Wieder, Kenneth A.Assistant: Brown, Glenn W. Attorney, Agent or FirmInternational ClassG01N 027/416AbstractDefective battery cells are detected by individually monitoring the voltage utput therefrom, which characteristically becomes abnormal when the defective condition occurs. Each cell is independently referenced to a common ground by its voltage monitoring device which drives a level sensing comparator that generates a control signal when the output voltage from that cell becomes abnormal. This control signal drives at least one switch to indicate when the defective condition occurs. | |
