BATTERY SYTEM TEMPERATURE MONITOR

• US 20140140369A1
• Filed: 11/21/2013
• Published: 05/22/2014
• Est. Priority Date: 11/22/2012
• Status: Active Grant

• Current Assignee: Samsung SDI Company Limited
• Original Assignee: Magna Steyr Battery Systems GmbH & Co. oG (Samsung SDI Company Limited)
• Inventors: ERHART, Michael
• Granted Patent: US 9,651,428 B2
• Time in Patent Office: Days
• US Class Current: 374/121
• 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; 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.

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

4. The battery system of claim 3, wherein the first insulator comprises apertures in a region of the infrared temperature sensors.

5. The battery system of claim 1, further comprising a second insulator arranged on a 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.

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

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

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

9. The battery system of claim 1, wherein an effective measurement field of the infrared temperature sensor simultaneously senses adjacent battery cells.

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

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

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

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

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

18. The battery system of claim 1, further comprising:

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

a second insulator arranged on a 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.

19. The battery system of claim 18, wherein the first insulator comprises apertures in a region of the infrared temperature sensors.

15. A battery system for a motor vehicle, comprising:

battery cells;

an electronic unit having a circuit board; and

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

16. The battery system of claim 15, wherein the temperature sensor comprises an infrared temperature sensor.

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

20. The battery system of claim 15, wherein the electronic unit comprises a cell monitoring unit configured to also measure a voltage at cell poles and/or cell connectors by way of voltage tapping elements.