BATTERY HEALTH STATUS BASED ON THRESHOLDS
Patent Information
- Application Number
- DE602016090759
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2015-11-19
- Filing Date
- 2016-11-18
- Publication Date
- 2024-12-25
- Estimated Expiration
- 2036-11-18
AI Technical Summary
Existing battery state of health (SOH) monitoring techniques, particularly incremental capacity analysis (ICA) using voltage measurements, are sensitive to noise and require batteries to be discharged to lower state of charge (SOC) ranges, limiting their applicability and frequency of monitoring.
The method employs force measurements derived from the swelling of lithium-ion battery electrodes to create incremental capacity curves, reducing noise and allowing SOH monitoring at higher SOC ranges, thereby enabling more frequent and accurate assessments.
This approach provides a more accurate and frequent estimation of battery SOH, minimizing noise and enabling pre-failure warnings and anticipated replacement dates, with errors in capacity estimation maintained within acceptable limits.