Battery system temperature monitor

• US 9,651,428 B2
• Filed: 11/21/2013
• Issued: 05/16/2017
• Est. Priority Date: 11/22/2012
• Status: Active Grant

• Current Assignee: Samsung SDI Company Limited
• Original Assignee: Samsung SDI Company Limited
• Inventors: Erhart, Michael
• Primary Examiner(s): Verbitsky, Gail Kaplan
• Application Number:
  US14/085,824
• Publication Number:
  US 20140140369A1
• Time in Patent Office: 1,272 Days
• Field of Search: 702130, 702135
• CPC Class Codes: G01J 5/028 using a charging unit or battery
• CPC Class Codes: H01M 10/482 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 10/486 for measuring temperature
• CPC Class Codes: H01M 2010/4271 Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
• CPC Class Codes: H01M 2200/10 Temperature sensitive devices
• CPC Class Codes: H01M 50/581 in response to temperature
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A battery system including a plurality of battery cells and at least one electronic unit having a circuit board and a temperature measuring device with at least two infrared temperature sensors arranged on and operatively connected to the circuit board and configured to measure a temperature of a predetermined measurement region on a surface of the battery cells.

Claims

1. A battery system comprising:

a plurality of battery cells;

an electronic unit comprising a circuit board and a temperature measuring device, the temperature measuring device comprising a plurality of infrared temperature sensors arranged on and operatively connected to the circuit board and configured to measure a temperature of a predetermined measurement region on a surface of the battery cells; and

a first insulator arranged between the battery cells and a side of the electronic unit, which side faces the battery cells, the first insulator comprising apertures in a region of the infrared temperature sensors and configured to partially thermally decouple the infrared temperature sensors from the battery cells.

2. The battery system of claim 1, wherein the infrared temperature sensors are thermally decoupled from the circuit board.

3. The battery system of claim 1, further comprising a second insulator arranged on another side of the electronic unit, which side is remote from the battery cells, the second insulator configured to thermally decouple the electronic unit from other components of the battery system.

4. The battery system of claim 1, wherein the predetermined measurement region of the surface of the battery cells comprises a predetermined breaking point of the battery cells.

5. The battery system of claim 1, wherein the predetermined measurement region of the surface of the battery cells lies in proximity of a cell pole of the battery cells.

6. The battery system of claim 1, wherein the predetermined measurement region lies on a cell connector arranged between two battery cells.

7. The battery system of claim 1, wherein the predetermined measurement region includes a device configured to increase a coefficient of emission.

8. The battery system of claim 1, wherein at least one of the battery cells comprises a window in a region of an effective measurement field of the infrared temperature sensors.

9. The battery system of claim 1, wherein the infrared temperature sensors comprise a radiation thermopile or a bolometer.

10. The battery system of claim 1, wherein additional temperature sensors are arranged on the circuit board of the electronic unit.

11. The battery system of claim 1, wherein the electronic unit further comprises a cell monitoring unit configured to measure a voltage at cell poles and/or cell connectors by way of voltage tapping elements.

12. A battery system comprising:

a plurality of battery cells;

an electronic unit comprising a circuit board and a temperature measuring device, the temperature measuring device comprising a plurality of infrared temperature sensors arranged on and operatively connected to the circuit board and configured to measure a temperature of a predetermined measurement region on a surface of the battery cells; and

an insulator arranged between the battery cells and a side of the electronic unit, which side faces the battery cells, the insulator being configured to partially thermally decouple the infrared temperature sensors from the battery cells,

wherein an effective measurement field of the infrared temperature sensor simultaneously senses adjacent battery cells.

13. A battery system for a motor vehicle comprising:

a plurality of battery cells;

an electronic unit comprising a circuit board;

a temperature sensor operatively connected to the circuit board and configured to measure a temperature of a predetermined measurement region on a surface of the battery cells; and

a first insulator arranged between the battery cells and a side of the electronic unit, which side faces the battery cells, the first insulator being configured to partially thermally decouple the temperature sensor from the battery cells,

wherein the temperature sensor has an effective measurement field that simultaneously measures the temperature of adjacent battery cells.

14. The battery system of claim 13, wherein the temperature sensor comprises an infrared temperature sensor.

15. The battery system of claim 13, wherein the temperature sensor is thermally decoupled from the circuit board.

16. The battery system of claim 13, further comprising:

a second insulator arranged on another side of the electronic unit, which side is remote from the battery cells, the second insulator being configured to thermally decouple the electronic unit from other components of the battery system.

17. The battery system of claim 16, wherein the first insulator comprises apertures in a region of the temperature sensor.

18. The battery system of claim 13, wherein the electronic unit comprises a cell monitoring unit configured to measure a voltage at cell poles and/or cell connectors by way of voltage tapping elements.