Thermal gradient battery monitoring system and methods

Patent metadata

Field	Value
Publication number	US-12416532-B2
Application number	US-202418758223-A
Country	US
Kind code	B2
Filing date	Jun 28, 2024
Priority date	Sep 25, 2020
Publication date	Sep 16, 2025
Grant date	Sep 16, 2025

Abstract

A battery pack includes a battery, a first temperature sensor configured to provide a first temperature value associated with a temperature of the battery, a heat source disposed proximate to the battery and configured to heat the battery, a second temperature sensor configured to provide a second temperature value associated with a temperature of the heat source, and a control board coupled to the first temperature sensor and the second temperature sensor, wherein the control board is configured to receive the first temperature value and the second temperature value. The control board is configured to compare the first temperature value and the second temperature value to determine a temperature gradient between the battery and the heat source and transmit an alert if the temperature gradient exceeds a first temperature gradient threshold.

First claim

What is claimed is:

1. A system comprising:
at least one battery;
a first temperature sensor configured to provide a first temperature value associated with a temperature at a first location at the at least one battery;
a second temperature sensor configured to provide a second temperature value associated with a temperature at a second location at the at least one battery; and
a processor operatively coupled to the first temperature sensor and the second temperature sensor, the processor configured to:
receive the first temperature value and the second temperature value;
compare the first temperature value and the second temperature value to determine a temperature gradient;
transmit a notification in response to the temperature gradient exceeding a first temperature gradient threshold; and
disable an electronic device or one or more components associated with the electronic device powered by the at least one battery in response to the temperature gradient exceeding a second temperature gradient threshold, the second temperature gradient threshold being greater than the first temperature gradient threshold.

2. The system of claim 1 , wherein the system is integrated within the electronic device, the electronic device comprising at least one of an outdoor doorbell, an outdoor security camera, an outdoor motion sensor, an outdoor smart device, or an automobile.

3. The system of claim 1 , wherein the at least one battery comprises:
a jelly-roll structure; and
anode sheets and cathode sheets separated by a separator.

4. The system of claim 3 , further comprising:
a battery pack, the battery pack designed as a cell pouch and the at least one battery being disposed within the battery pack;
wherein the battery pack provides an airtight seal around the at least one battery, the battery pack comprises an electrolyte, and gases released from the electrolyte affect a temperature profile of the at least one battery.

5. The system of claim 1 , further comprising a heat source disposed proximate to the at least one battery and configured to heat the at least one battery.

6. The system of claim 5 , wherein the at least one battery is disposed within a battery pack and the heat source is wrapped around an exterior surface of the battery pack to provide heat to the at least one battery.

7. The system of claim 5 , wherein the heat source is disposed at least partially around the at least one battery.

8. The system of claim 5 , wherein the heat source includes a first surface and a second surface, the first surface and the second surface being substantially flat.

9. The system of claim 8 , wherein the first surface and the second surface are approximately parallel.

10. The system of claim 8 , wherein the first surface is configured to be in contact with at least portions of a top surface of the at least one battery and the second surface is configured to be in contact with at least portions of a bottom surface of the at least one battery.

11. An electronic device comprising:
a battery pack disposed within an enclosure of the electronic device, the battery pack comprising:
at least one battery;
a first temperature sensor configured to provide a first temperature value associated with a temperature at a first location at the at least one battery;
a second temperature sensor configured to provide a second temperature value associated with a temperature at a second location at the at least one battery; and
a processor operatively coupled to the first temperature sensor and the second temperature sensor, the processor configured to:
receive the first temperature value and the second temperature value;
compare the first temperature value and the second temperature value to determine a temperature gradient;
transmit a notification in response to the temperature gradient exceeding a first temperature gradient threshold; and
disable the electronic device or one or more components associated with the electronic device powered by the at least one battery in response to the temperature gradient exceeding a second temperature gradient threshold, the second temperature gradient threshold being greater than the first temperature gradient threshold.

12. The electronic device of claim 11 , wherein the electronic device comprises at least one of an outdoor doorbell, an outdoor security camera, an outdoor motion sensor, an outdoor smart device, or an automobile.

13. The electronic device of claim 11 , wherein the at least one battery comprises:
a jelly-roll structure; and
anode sheets and cathode sheets separated by a separator.

14. The electronic device of claim 13 , wherein:
the battery pack comprises a cell pouch, the at least one battery being disposed within the battery pack, wherein the battery pack provides an airtight seal around the at least one battery; and
the battery pack further comprises an electrolyte, wherein gases released from the electrolyte affect a temperature profile of the at least one battery.

15. The electronic device of claim 11 , further comprising a heat source disposed proximate to the at least one battery and configured to heat the at least one battery.

16. The electronic device of claim 15 , wherein the at least one battery is disposed within the battery pack and the heat source is wrapped around an exterior surface of the battery pack to provide heat to the at least one battery.

17. The electronic device of claim 15 , wherein the heat source is disposed at least partially around the at least one battery.

18. The electronic device of claim 15 , wherein the heat source includes a first surface and a second surface, the first surface and the second surface being substantially flat.

19. The electronic device of claim 18 , wherein the first surface and the second surface are approximately parallel.

20. The electronic device of claim 18 , wherein the first surface is configured to be in contact with at least portions of a top surface of the at least one battery and the second surface is configured to be in contact with at least portions of a bottom surface of the at least one battery.

Assignees

• Google Llc

Inventors

• Wang David
• Raghupathy Arun
• Lim James Robert
• Ali Ihab A
• Ye Chang Hong

Classifications

• H01M10/60

  Heating or cooling; Temperature control · CPC title

• H01M10/486

  for measuring temperature · CPC title

• H01M10/48

  Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M10/6554

  Rods or plates · CPC title