PATENT CLAIM ANALYSIS

Application Number: 15891948
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["324", "500000"]

Abstract:
The present invention refers to a device and a method for measuring isolation resistance of a battery powered systems. The device comprises: a first reference resistance (R 01 ) connectable in series between a positive high-voltage bus ( 1 ) and a low-voltage ground connection ( 5 ), a second reference resistance (R 02 ) connectable in series between the negative high-voltage bus ( 2 ) and the a low-voltage ground connection ( 5 ), a first measurement resistance (Rbottom) connected with the low-voltage ground connection ( 5 ), a second measurement resistance (Rtop 1 ) connectable in series between the positive high-voltage bus ( 1 ), and the first measurement resistance (Rbottom), and a third measurement resistance (Rtop 2 ) connectable in series between the negative high-voltage bus ( 2 ), and the first measurement resistance (Rbottom). Isolation resistances (Riso_pos, Riso_neg) are calculated based on voltage measurements at the first measurement resistance (Rbottom), and the mean value of the four high-voltage battery voltage measurements.

Claim (Index 24):
An electric vehicle comprising:\n a vehicle chassis including a low voltage ground; a battery including a positive pole and a negative pole; a device load ( 4 ); and a device including a positive high-voltage bus connectable to the positive pole and to the device load, a negative high-voltage bus connectable to the negative pole and to the device load, a low-voltage ground connection, a first reference resistance and a first switch connected in series between the positive high-voltage bus and the low-voltage ground connection, a second reference resistance and a second switch connected in series between the negative high-voltage bus and the low-voltage ground connection, a first measurement resistance having a first terminal connected with the low-voltage ground connection and a second terminal, a second measurement resistance and a third switch connected in series between the positive high-voltage bus and the second terminal, a third measurement resistance and a fourth switch connected in series between the negative high-voltage bus and the second terminal, a control module adapted for opening and closing the first to the fourth switches in accordance with a pre-established sequence, and a calculating module adapted for calculating an isolation resistance between the positive high-voltage bus and the low-voltage ground and an isolation resistance between the negative high-voltage bus and the low-voltage ground based on voltage measurements at the first measurement resistance and voltage measurements of the high-voltage battery, wherein the positive high-voltage bus and the negative high-voltage bus are connected with the battery and with the device load.

Metadata:
- Claim Count in Document: 8.0
- Percentile: 88.0
- Lexical Diversity: 2.98438
- Patent Class: 324.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14607404', '15401714', '15378922', '14882247', '15841955']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5693830659803499
- 35 USC 102 Novelty (BERT): 0.4814716265786615
- Combined Prediction Score: 0.560591922040181
- Mean Citation Score: 204.803238
- Max Citation Score: 222.86447
- Similarity Product: 166.39529628350374

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

Dataset: test