Apparatus for failure prediction of power cable and method thereof

Patent metadata

Field	Value
Publication number	US-11686782-B2
Application number	US-202117524317-A
Country	US
Kind code	B2
Filing date	Nov 11, 2021
Priority date	Dec 1, 2020
Publication date	Jun 27, 2023
Grant date	Jun 27, 2023

Abstract

A power cable failure prediction apparatus and method includes a temperature sensor configured to measure a temperature around a vehicle, a resistance measurer configured to measure a resistance of a cable connected to a drive motor of the vehicle, and a controller configured to predict in advance whether the cable is damaged by comparing the temperature around the vehicle with the resistance of the cable.

First claim

What is claimed is:

1. A power cable failure prediction apparatus, comprising:
a temperature sensor configured to measure a temperature around a vehicle;
a resistance measurer configured to measure a resistance of a cable connected to a drive motor of the vehicle and to measure a resistamce of a braid constituting the cable;
a controller configured to predict in advance whether the cable is damaged by comparing the temperature around the vehicle with the resistance of the cable, wherein the controller is further configured to,
measure a rate of change in the temperature via the sensor;
measure a rate of change in the resitance of the cable via the resitance measurer; and
determine that the cable is damaged, in response to the rate of change in the resistance of the cable being greater than a rate of change in the temperature around the vehicle.

2. The power cable failure prediction apparatus of claim 1 , wherein the controller is further configured to:
measure the temperature around the vehicle and the resistance of the braid before the vehicle is driven;
measure a rate of change of the temperature around the vehicle while the vehicle is being driven via the temperature sensor,
measure a rate of change in the resistance of the cable via the resistance measurer while the vehicle is being driven; and
determine that the braid is damaged, in response to the rate of change in the resistance of the braid being greater than a rate of change in the temperature around the vehicle.

3. The power cable failure prediction apparatus of claim 2 , wherein the controller is further configured to display an alarm, in response to determining that the braid is damaged.

4. A method of predicting a failure of a power cable, the method comprising:
measuring a temperature around a vehicle;
measuring a resistance of the power cable, wherein the power cable is connected to a drive motor of the vehicle;
measuring a resistance of a braid constituting the power cable;
predicting in advance whether the power cable is damaged, wherein the predicting comprises:
measuring a rate of change in the temperature around the vehicle; and
measuring a rate of change in the resistance of the power cable,
wherein, when the rate of change in the resistance of the cable is greater than the rate of change in the temperature, it is determined that the power cable is damaged.

5. The method of claim 4 , wherein the predicting in advance of whether the power cable is damaged by comparing the temperature around the vehicle with the resistance of the power cable comprises:
measuring the temperature around the vehicle and the resistance of the braid before the vehicle is driven;
measuring the temperature around the vehicle and the resistance of the braid while the vehicle is being driven; and
determining that the braid is damaged in response to a rate of change in the resistance of the braid being greater than a rate of change in the temperature around the vehicle.

6. The method of claim 5 , further comprising:
displaying an alarm, in response to determining that the braid is damaged.

Assignees

• Hyundai Mobis Co Ltd

Inventors

• Yang Hae Jun
• Lee Sang Han

Classifications

• G01R31/54

  Testing for continuity · CPC title

• G01R31/58 Primary

  Testing of lines, cables or conductors (testing of electric windings G01R31/72) · CPC title

• B60K35/22

  Display screens · CPC title

• B60W50/0205 Primary

  Diagnosing or detecting failures; Failure detection models · CPC title

• B60W40/02

  related to ambient conditions · CPC title