PATENT CLAIM ANALYSIS

Application Number: 16387760
Application Type: Utility
Filing Date: 2019-04
Publication Date: 2019-08
Patent Classification: ["320", "107000"]

Abstract:
A lithium ion secondary battery includes a positive electrode including a positive electrode active material layer containing lithium iron phosphate, a negative electrode including a negative electrode active material layer containing graphite, and an electrolyte including a lithium salt and a solvent including ethylene carbonate and diethyl carbonate between the positive electrode and the negative electrode. When the battery temperature of the lithium ion secondary battery or the temperature of an environment in which the lithium ion secondary battery is used is T and given temperatures are T1 and T2 (T1<T2), in the case where T<T1, constant current charge is performed until voltage reaches a given value and then constant voltage charge is performed; in the case where T1≤T<T2, only constant current charge is performed; and in the case where T2≤T, charge is not performed.

Claim (Index 2):
A battery charger comprising:\n a power conversion unit; a charge control switch and a discharge control switch each connected to the power conversion unit in series; a control circuit configured to control output of the power conversion unit; and a temperature detection unit detecting a temperature of a secondary battery, wherein: the control circuit comprises:\n a current-voltage switching unit; and \n a temperature control switching unit, \n the temperature control switching unit is configured to output signals for supplying output of the current-voltage switching unit to the power conversion unit in accordance with the temperature, the signals comprise:\n a first signal for permitting constant current charge, constant voltage charge, and discharge, when the temperature is lower than T1; \n a second signal for prohibiting constant voltage charge and permitting constant current charge and discharge, when the temperature is T1 or higher and lower than T2, T2 being higher than T1; \n a third signal for prohibiting constant voltage charge and constant current charge and permitting discharge, when the temperature is T2 or higher and lower than T3, T3 being higher than T2; and \n a fourth signal for prohibiting constant voltage charge, constant current charge, and discharge, when the temperature is higher than T3, and \n the control circuit is configured to determine whether charging in accordance with the temperature, and to shift from constant current charge to constant voltage charge when a voltage of the secondary battery reaches a given value during charging.

Metadata:
- Claim Count in Document: 45.0
- Percentile: 100.0
- Lexical Diversity: 2.39062
- Patent Class: 320.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13714459', '14173029', '13122096', '14136503', '14152104']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7280576357767824
- 35 USC 102 Novelty (BERT): 0.5179879204197823
- Combined Prediction Score: 0.7070506642410824
- Mean Citation Score: 234.27873800000003
- Max Citation Score: 346.94843
- Similarity Product: 329.9594049020397

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