Vehicle Battery Deterioration Diagnosis Using Dual Charging Data
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Solution Overview
Problem
The accuracy of battery deterioration diagnosis is limited by the accuracy of sensors used for detection, leading to inconsistent and potentially inaccurate assessments of battery health.
Innovation Solution
A diagnostic system that acquires and compares charging information from both an external charger and the vehicle's battery sensors, calculating and integrating error values to estimate battery deterioration more accurately, thereby improving diagnosis precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensor-based detection is used for battery charging monitoring, then the diagnostic system can obtain charging information, but the measurement precision is limited by sensor accuracy
Solution Approach 1:
The patent combines charging information from multiple sources (external charger sensors and vehicle sensors) into a single integrated diagnostic system. By merging data from both chargers and vehicles, the system compensates for individual sensor inaccuracies and achieves more reliable battery deterioration diagnosis.
Solution Approach 2:
The system implements feedback mechanisms where charging information is continuously monitored, compared, and used to adjust diagnostic estimates. The diagnostic results are fed back to improve future measurements and diagnoses, enabling the system to learn from and correct sensor measurement errors over time.
2Measurement precision
If multiple charging information sources are integrated, then the diagnosis accuracy improves, but the device complexity increases
Solution Approach 1:
The diagnostic device is designed with multi-functional capabilities to handle various types of charging information from different sources (external chargers, vehicle sensors, different charging conditions). This universal design allows the same device to process diverse data types without requiring separate specialized systems for each data source.
Solution Approach 2:
The system segments charging information processing into distinct modules: one for acquiring data from external chargers, another for vehicle sensors, and a separate diagnostic engine that integrates both. This segmentation allows each component to be optimized independently while maintaining overall system simplicity through modular architecture.
Data Source
AI summary
A diagnostic device (100) includes: an acquisition unit (101) that acquires first charging information including a first detected value detected by an external charger (200) during charging of a battery mounted in a vehicle (10) and second charging information including a second detected value detected by the vehicle; and a deterioration estimation unit (105) that estimates a deterioration degree that indicates a degree of deterioration of the battery on the basis of the first charging information and the second charging information.