PATENT CLAIM ANALYSIS

Application Number: 15747115
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-09
Patent Classification: ["324", "503000"]

Abstract:
Wide deployment of high voltage battery systems in traction, industrial and renewable energy installations is raising the concerns for human safety. Exposure to hazardous high voltages may occur due to deterioration of insulation materials or by accidental events. It is thus important to monitor for such faults and being able to provide timely warnings to affected persons. For this purpose it has become mandatory for electrified passenger vehicles (CFR 571.305) to maintain high isolation values which can be continuously monitored by electrical isolation monitoring devices. The task of monitoring isolation resistance within the electrically noisy car environment is not a trivial task and the solution to this problem has become quickly a field of research and innovation for all affected industries.

Claim (Index 1):
A method to estimate a change in values of isolation impedance in an isolated ground (IT) electrical system comprising a power source, the method comprising:\n modeling a first isolation path between a first reference point and a second reference point and modeling a second isolation path between a third reference point and a fourth reference point, thereby creating a theoretical model of the isolated ground electrical system; providing an initial value of a first isolation resistance for the first isolation path and an initial value of a second isolation resistance for the second isolation path; measuring an initial value of a voltage between the first reference point and the second reference point and storing the measured initial value in a storage medium; measuring an initial value of a voltage between the third reference point and the fourth reference point and storing the measured initial value in the storage medium; measuring a subsequent different value of the voltage between the first reference point and the second reference point and storing the measured subsequent value in the storage medium; measuring a subsequent value of the voltage between the third reference point and the fourth reference point and storing the measured subsequent value in the storage medium; entering the measured initial values of the voltages, the measured subsequent values of the voltages, the provided values of the isolation impedances and an elapsed amount of time between the initial measurements and the subsequent measurements into a mathematical function stored in the storage medium; wherein the mathematical function minimizes the discrepancy between the measured change in values of the voltages and the modeled theoretical values by adjusting values of modeled isolation impedances associated with the isolation paths in the electrical system; extracting estimated values of isolation impedances associated with the isolation paths in the electrical system by application of the mathematical function; and storing the estimated values in the storage medium.

Metadata:
- Claim Count in Document: 98.0
- Percentile: 86.0
- Lexical Diversity: 1.37234
- Patent Class: 324.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13467834', '14504588', '14607404', '13172922', '12484434']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5427224785752657
- 35 USC 102 Novelty (BERT): 0.46361476709609
- Combined Prediction Score: 0.5348117074273482
- Mean Citation Score: 145.106004
- Max Citation Score: 160.99979
- Similarity Product: 119.9554770572102

Labels:
- Claim Label 101: 0
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 0

Dataset: test