PATENT CLAIM ANALYSIS

Application Number: 16308736
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-05
Patent Classification: ["323", "271000"]

Abstract:
Provided is a voltage conversion device including: a voltage conversion circuit having two inductors that are wound around a core and that magnetically cancel each other out, and switching elements that switch current flowing through the respective inductors; and a control unit that alternately turns on and off each of the switching elements. The coupling coefficient of the two inductors is in the range from −0.99 to −0.78.

Claim (Index 11):
A method of deciding leakage inductance of two inductors in a voltage conversion device including switching elements that respectively switch current flowing through the two inductors that are wound around a core and magnetically cancel each other out, each of the switching elements being turned on or off by a control unit, comprising:\n preparing two first inductors with a coupling coefficient of 0, and two second inductors having leakage inductance of a same magnitude as self inductance of the first inductors and a coupling coefficient close to \u22121; connecting the two first inductors in place of the two inductors; obtaining a first change characteristic with respect to a duty ratio in a predetermined range where the control unit turns on each of the switching elements, for ripple current flowing through the first inductors; connecting the two second inductors in place of the two first inductors; obtaining a second change characteristic with respect to the duty ratio in the predetermined range, for ripple current flowing through the second inductors; calculating a reduction rate of ripple current based on a result obtained by comparing the obtained first and second change characteristics with each other; setting a reduction rate of the magnitude of leakage inductance of the second inductors to a reduction rate equal to or lower than the calculated reduction rate of ripple current; deciding a magnitude of leakage inductance of the two inductors so as to obtain the reduction rate; and setting a coupling coefficient of the two second inductors as a coupling coefficient of the two inductors.

Metadata:
- Claim Count in Document: 6.0
- Percentile: 98.0
- Lexical Diversity: 1.46
- Patent Class: 323.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14857323', '14724194', '14957743', '12163573', '10527129']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7401182915004689
- 35 USC 102 Novelty (BERT): 0.4831886657798202
- Combined Prediction Score: 0.714425328928404
- Mean Citation Score: 237.57403400000004
- Max Citation Score: 249.93864
- Similarity Product: 206.20913288552285

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