Autonomous battery monitoring system

Patent metadata

Field	Value
Publication number	US-11977121-B2
Application number	US-202117474703-A
Country	US
Kind code	B2
Filing date	Sep 14, 2021
Priority date	Sep 15, 2020
Publication date	May 7, 2024
Grant date	May 7, 2024

Abstract

Described herein is a device for autonomously monitoring a battery is provided. The device is integrated with the battery (e.g., by being electrically coupled to the battery). The device obtains measurement data by injecting electrical signals into the battery and measuring an electrical response of the battery. The device participates in an authentication protocol with a computing device to verify a unique identity of the device to the computing device. After performing the authentication protocol verifying the unique identity of the device, the device transmits battery data to the computer. Further, techniques for verifying the identity of the battery using measurement data obtained by the device are described herein. The techniques generate a battery signature using the measurement data that is then used to verify the identity of the battery. For example, the battery signature may be used to determine whether the battery is counterfeit or defective.

First claim

The invention claimed is:

1. A system for verifying an identity of a battery integrated with a monitoring device, the system comprising:
a processor; and
a non-transitory computer-readable storage medium storing instructions that, when executed by the processor, cause the processor to:
after a first performance of an authentication protocol verifying a unique identity of the monitoring device, receive first data obtained by the monitoring device using a sensor of the monitoring device, wherein the first data comprises first measurement data obtained by the monitoring device or a first set of data generated from the first measurement data, wherein the first measurement data comprises a first measurement of an electrical response of the battery to a first one or more electrical signals injected by the monitoring device;
obtain a first battery signature using the first data obtained by the monitoring device, wherein the first battery signature comprises a plurality of values indicative of electrical characteristics of the battery;
verify the identity of the battery using the first battery signature at least in part by determining whether the electrical characteristics of the battery match those of a reference battery;
after a second performance of the authentication protocol verifying the unique identity of the monitoring device, receive second data obtained by the monitoring device using the sensor, wherein the second data comprises second measurement data obtained by the monitoring device using the sensor or a second set of data generated from the second measurement data, wherein the second measurement data comprises a second measurement of an electrical response of the battery to a second one or more electrical signals injected by the monitoring device;
obtain a second battery signature using the second data obtained by the monitoring device, wherein the second battery signature comprises a plurality of values indicative of the electrical characteristics of the battery; and
verify the identity of the battery using the second battery signature at least in part by determining whether the electrical characteristics of the battery match those of the reference battery.

2. The system of claim 1 , wherein the first battery signature is different from the second battery signature.

3. The system of claim 1 , wherein verifying the identity of the battery using the first battery signature comprises comparing the plurality of values indicating electrical characteristics of the battery to an expected set of values.

4. The system of claim 3 , wherein the expected set of values are determined according to an expected electrical response of the battery to the first one or more electrical signals.

5. The system of claim 1 , wherein verifying the identity of the battery using the first battery signature comprises determining whether the battery is a counterfeit battery.

6. The system of claim 1 , wherein verifying the battery using the first battery signature comprises determining whether the battery is defective.

7. The system of claim 1 , wherein the first measurement data comprises measurement data obtained from performing electronic impedance spectroscopy (EIS) on the battery by the monitoring device.

8. The system of claim 1 , wherein obtaining the first battery signature using the first data comprises generating the first battery signature using the first measurement data.

9. The system of claim 1 , wherein the plurality of values are indicative of electrical characteristics of the battery at one or more frequencies, and/or at one or more temperatures.

10. A method for verifying an identity of a battery integrated with a monitoring device, the method comprising:
using a processor to perform:
after a first performance of an authentication protocol verifying a unique identity of the monitoring device, receiving first data obtained by the monitoring device using a sensor of the monitoring device, wherein the first data comprises first measurement data obtained by the monitoring device or a first set of data generated from the first measurement data, wherein the first measurement data comprises a first measurement of an electrical response of the battery to a first one or more electrical signals injected by the monitoring device;
obtaining a first battery signature using the first data obtained by the monitoring device, wherein the first battery signature comprises a plurality of values indicative of electrical characteristics of the battery;
verifying the identity of the battery using the first battery signature at least in part by determining whether the electrical characteristics of the battery match those of a reference battery;
after a second performance of the authentication protocol verifying the unique identity of the monitoring device, receive second data obtained by the monitoring device using the sensor, wherein the second data comprises second measurement data obtained by the monitoring device using the sensor or a second set of data generated from the second measurement data, wherein the second measurement data comprises a second measurement of an electrical response of the battery to a second one or more electrical signals injected by the monitoring device;
obtain a second battery signature using the second data obtained by the monitoring device, wherein the second battery signature comprises a plurality of values indicative of the electrical characteristics of the battery; and
verify the identity of the battery using the second battery signature at least in part by determining whether the electrical characteristics of the battery match those of the reference battery.

11. The method of claim 10 , wherein verifying the identity of the battery using the first battery signature comprises comparing the plurality of values indicating electrical characteristics of the battery to an expected set of values.

12. The method of claim 10 , wherein the plurality of values indicate electrical characteristics of the battery at one or more frequencies, and/or one or more temperatures.

13. A device integrated with and configured to autonomously monitor a battery, the device comprising:
a sensor;
wireless communication circuitry;
a processor; and
a non-transitory computer-readable storage medium storing instructions that, when executed by the processor, cause the processor to:
perform a first measurement on the battery using the sensor to obtain first measurement data at least in part by injecting a first one or more electrical signals into the battery and measuring an electrical response of the battery using the sensor, wherein the first measurement data indicates electrical characteristics of the battery integrated with the monitoring device;
perform, using the wireless communication circuitry, an authentication protocol with a computing device, separate from the device, wherein performance of the authentication protocol verifies a unique identity of the device to the computing device;
after performing the authentication protocol with the computing device, transmit, using the wireless communication circuitry, the first measurement data or a first set of data generated from the first measurement data to the computing device; and
after transmitting the first measurement data or the first set of data generated from the first measurement data:
perform a second measurement on the battery using the sensor to obtain second measurement data at least in part by injecting a second one or more electrical signals into the battery and measuring an electrical response of the battery using the sensor, wherein the second measurement data indicates electrical characteristics

Assignees

• Analog Devices International Unlimited Co

Inventors

• O'Mahony Shane
• Kamath Narsimh Dilip
• Poo Tze Lei
• Aquilano Gina G
• Gullapalli Hemtej
• Doherty Lance Robert

Classifications

• G01R31/378 Primary

  specially adapted for the type of battery or accumulator · CPC title

• G01R31/367

  Software therefor, e.g. for battery testing using modelling or look-up tables · CPC title

• G01R31/389

  Measuring internal impedance, internal conductance or related variables · CPC title

• H01M10/4221 Primary

  with battery type recognition · CPC title

• H01M10/4285

  Testing apparatus · CPC title