PATENT CLAIM ANALYSIS

Application Number: 16351332
Application Type: Utility
Filing Date: 2019-03
Publication Date: 2019-07
Patent Classification: ["307", "104000"]

Abstract:
In a wireless power transfer system, a resonant circuit is formed on the secondary coil side, phase information of a resonant current flowing in the resonant circuit is detected, and, based on this phase information, a driving frequency is determined so that the current phase of a driving current flowing in a primary coil slightly delays from the voltage phase, thereby driving the primary coil. A Q value determined based on a leakage inductance of the secondary coil, a capacitance of a resonant capacitor, and an equivalent load resistance is set to a value greater than or equal to a value determined by Q=2/k 2  (k is a coupling coefficient).

Claim (Index 19):
A wireless power transfer system in which a primary coil connected to a high-frequency power source and a secondary coil connected to a load are disposed so as to be isolated from each other with a coupling coefficient k, thereby supplying power from the primary coil to the secondary coil in a non-contact manner, the system comprising:\n a resonance current phase detection means forming a resonance circuit by connecting a resonance capacitor to the secondary coil, configured to detect phase information of a resonance current flowing in the secondary coil, and including a phase correction means configured to, when a phase delay has occurred in the detected phase information, correct the phase delay by correcting the detected phase information in a phase advancing direction, the resonance current phase detection means being configured to detect the corrected phase information as the phase information of the resonance current; and a driving circuit configured to determine, based on the corrected phase information, a driving frequency so that a current phase of a driving current flowing in the primary coil slightly delays from a voltage phase of a driving voltage applied to the primary coil, thereby driving the primary coil, wherein a Q value determined based on a leakage inductance of the secondary coil, a capacitance of the resonance capacitor, and an equivalent load resistance on the secondary coil side is set to a value greater than or equal to a value determined by Q=2/k 2 .

Metadata:
- Claim Count in Document: 68.0
- Percentile: 99.0
- Lexical Diversity: 1.93651
- Patent Class: 307.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15310222', '11705820', '11112074', '11329068', '11660972']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8030081687452718
- 35 USC 102 Novelty (BERT): 0.5410288536512541
- Combined Prediction Score: 0.7768102372358701
- Mean Citation Score: 263.188976
- Max Citation Score: 393.5308
- Similarity Product: 364.3955404916287

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

Dataset: test