PATENT CLAIM ANALYSIS

Application Number: 15867244
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-05
Patent Classification: ["702", "063000"]

Abstract:
A technique of diagnosing a fuel cell stack is provided. In particular, current and voltage of a fuel cell stack are measured during driving of a fuel cell vehicle and the current and voltage are sequentially stored. It is then determined based on the stored current whether the vehicle is being operated at constant current. Different factors are analyzed depending on whether the vehicle is being operated at constant current, and then it is determined whether the fuel cell stack is in a normal state. A moisture supply into the fuel cell stack is calculated if it is determined that the fuel cell stack is not in the normal state. Based on the calculated moisture supply, whether the fuel cell stack is in a dryout state is diagnosed.

Claim (Index 9):
An apparatus, comprising:\n a processor coupled to the network interfaces and adapted to execute one or more processes; and a memory configured to store a process executable by the processor, the process when executed operable to:\n measure current and voltage of a fuel cell stack during driving of a fuel cell vehicle and sequentially storing the current and voltage; \n determine whether the vehicle is being operated at constant current by comparing a variance of the stored current with a preset reference variance value; \n determine whether the fuel cell stack is in a normal state by comparing different factors with a preset reference value depending on whether the vehicle is being operated at constant current; \n calculate a moisture supply into the fuel cell stack if it is determined that the fuel cell stack is not in the normal state; \n diagnose whether the fuel cell stack is in a dryout state by comparing the calculated moisture supply with a preset reference moisture supply value; and \n execute a recovery driving control of the fuel cell stack upon diagnosing that the fuel cell stack is in a dryout state by controlling an air supply system, a cooling system of the fuel cell stack or an output of the fuel cell stack.

Metadata:
- Claim Count in Document: 44.0
- Percentile: 86.0
- Lexical Diversity: 2.58491
- Patent Class: 702.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14616229', '14320899', '14489887', '15373286', '12619000']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2122487430068139
- 35 USC 102 Novelty (BERT): 0.4915539005196209
- Combined Prediction Score: 0.2401792587580946
- Mean Citation Score: 232.60430600000004
- Max Citation Score: 255.36563
- Similarity Product: 199.844465520469

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