Noise inflow analysis apparatus and method

Patent metadata

Field	Value
Publication number	US-12517162-B2
Application number	US-202318380908-A
Country	US
Kind code	B2
Filing date	Oct 17, 2023
Priority date	Apr 24, 2023
Publication date	Jan 6, 2026
Grant date	Jan 6, 2026

Abstract

An electromagnetic noise penetration analysis apparatus for analyzing electromagnetic wave noise penetrating a battery management device may include a plurality of internal electrical components grouped as function blocks based on each collective function. The electromagnetic noise penetration analysis apparatus may include one near-field measurement probe positioned near or adjacent to at least one electrical component of an associated function block, the electrical component being previously identified by associated monitoring data operating abnormally during an electromagnetic wave immunity test at a susceptible frequency, and configured to measure intensity of magnetic field near or at the identified electrical component, while simulated electromagnetic noise of a frequency comparable to the susceptible frequency is applied. An analyzer may be configured to quantify intensity of electromagnetic wave noise received by the electrical component represented by the function block based on the intensity of magnetic field measured by the near-field measurement probe.

First claim

What is claimed is:

1 . An electromagnetic noise penetration analysis apparatus for analyzing electromagnetic wave noise penetrating a battery management device that manages at least one battery module and has a plurality of electrical components represented by a plurality of function blocks, the apparatus comprising:
at least one near-field measurement probe positioned adjacent to at least one electrical component of the plurality of electrical components associated with first monitoring data identified as operating abnormally during an electromagnetic wave immunity test among the plurality of electrical components represented by the plurality of function blocks, and configured to measure an intensity of magnetic field while electromagnetic noise of a frequency applied when the first monitoring data was obtained during the electromagnetic wave immunity test is applied to the battery management device; and an analyzer configured to quantify intensity of electromagnetic wave noise penetrating to reach the at least one electrical component represented by at least one function block based on intensity of the magnetic field measured by the at least one near-field measurement probe.

2 . The apparatus as claimed in claim 1 , further comprising a receiver configured to receive frequency information of electromagnetic noise applied when the first monitoring data was identified as operating abnormally during the electromagnetic wave immunity test along with the first monitoring data.

3 . The apparatus as claimed in claim 2 , wherein the at least one near-field measurement probe is configured to sensitively respond to the frequency applied when the first monitoring data was identified as operating abnormally.

4 . The apparatus as claimed in claim 1 , wherein the at least one electrical component represented by the at least one function block is positioned near or along a path connected to the at least one electrical component represented by the at least one function block.

5 . An apparatus for quantifying electromagnetic noise penetration into a device under test, the apparatus comprising:
a near-field probe positioned near or adjacent an electrical component among a plurality of electrical components inside the device under test, the near-field probe being configured to measure magnetic field intensity communicated to an analyzer via a receiver to quantify an intensity of electromagnetic noise penetrating the device under test and reaching the electrical component among the plurality of electrical components; and the receiver in communication with the near-field probe.

6 . The apparatus as claimed in claim 5 , wherein the electrical component among the plurality of electrical components is more susceptible to abnormal operation from penetrating noise at a particular frequency than any other electrical component inside the device under test.

7 . The apparatus as claimed in claim 6 , wherein the near-field probe is sensitized to the particular frequency.

8 . The apparatus as claimed in claim 5 , further comprising a diagnosis apparatus in communication with the device under test, and configured to receive data that may operate abnormally when the device under test does not include a near-field probe inside the device under test.

9 . The apparatus as claimed in claim 8 , wherein the diagnosis apparatus communicates data to the receiver relating to an area where the near-field probe is positioned near circuitry susceptible to abnormal operation from electromagnetic noise penetration.

10 . The apparatus as claimed in claim 9 , wherein the diagnosis apparatus communicates frequency information relating to susceptible frequencies at which the data that may operate abnormally are more likely to operate abnormally than at any arbitrary frequency.

11 . The apparatus as claimed in claim 5 , wherein the device under test is a battery management device.

12 . The apparatus as claimed in claim 11 , wherein the device under test is connected to a battery pack.

13 . The apparatus as claimed in claim 5 , comprising a diagnosis unit in communication with the device under test configured to generate a warning signal if an abnormality occurs.

14 . A method for analyzing electromagnetic wave noise that penetrates into a device under test for testing electromagnetic wave immunity against electromagnetic wave noise penetration, the method comprising:
obtaining first data that operates abnormally during an electromagnetic wave immunity test and corresponding frequency information of an electromagnetic wave noise applied to the device under test when the first data operates abnormally; measuring magnetic field intensity with at least one near-field measurement probe positioned at or adjacent a position of at least one electrical component represented by at least one function block associated with the first monitoring data among a plurality of function blocks included in the device under test while the electromagnetic wave noise is applied to the device under test; and quantifying an intensity of the electromagnetic wave noise penetrating the device under test to reach the at least one electrical component represented by the at least one function block based on intensity of magnetic field measured by the at least one near-field measurement probe.

15 . The method as claimed in claim 14 , wherein the at least one near-field measurement probe is configured to respond to a frequency that was applied when the first monitoring data was operating abnormally.

16 . The method as claimed in claim 14 , wherein the position of the at least one electrical component represented by the at least one function block comprises a position near or along a path connected to the at least one electrical component represented by the at least one function block.

17 . The method as claimed in claim 14 , wherein the device under test is a battery management device that manages at least one battery module.

18 . The method as claimed in claim 14 , wherein measurements of magnetic field intensity made with the near-field measurement probe are communicated to a receiver outside the device under test.

19 . The method as claimed in claim 14 , wherein information relating to origins of any data operating abnormally and any corresponding particularly susceptible frequency is sent to a receiver.

20 . The method as claimed in claim 14 , wherein a diagnosis apparatus detects any abnormal data and communicates information relating to corresponding frequency of noise penetration causing the abnormal data to a receiver.

Assignees

• Samsung Sdi Co Ltd

Inventors

• Chung Mooil
• Mun Seongjin

Classifications

• G01R31/3646

  for indicating electrical conditions or variables, e.g. visual or audible indicators · CPC title

• G01R31/392

  Determining battery ageing or deterioration, e.g. state of health · CPC title

• B60L58/16

  responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH] · CPC title

• G01R23/20

  Measurement of non-linear distortion · CPC title

• G01R33/02

  Measuring direction or magnitude of magnetic fields or magnetic flux (G01R33/20 takes precedence) · CPC title