System and method for detecting battery failure during a non-operating event

• US 9,347,995 B2
• Filed: 02/01/2013
• Issued: 05/24/2016
• Est. Priority Date: 02/18/2012
• Status: Active Grant

• Current Assignee: CPS Technology Holdings, LLC
• Original Assignee: Johnson Controls Technology Company (Johnson Controls International plc)
• Inventors: Nguyen, Thanh T., Jiang, Junwei
• Primary Examiner(s): Assouad, Patrick
• Assistant Examiner(s): NASIR, TAQI R
• Application Number:
  US13/757,228
• Publication Number:
  US 20130214790A1
• Time in Patent Office: 1,208 Days
• Field of Search: 324/426, 324/430, 324/432, 324/433, 324/764.01, 324/761.01, 320/101, 320/103, 320/138, 307/21, 307/23, 307/43, 307/44, 307/66, 136/293
• US Class Current: 1/1
• CPC Class Codes: B60L 2260/22 Standstill, e.g. zero speed
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 58/21 having the same nominal voltage
• CPC Class Codes: B60L 58/24 for controlling the temperature of batteries
• CPC Class Codes: G01R 31/3648 comprising digital calculation means, e.g. for performing an algorithm
• CPC Class Codes: G01R 31/371 with remote indication, e.g. on external chargers
• CPC Class Codes: G01R 31/382 Arrangements for monitoring battery or accumulator variables, e.g. SoC
• CPC Class Codes: G01R 31/396 Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
• CPC Class Codes: H02J 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• CPC Class Codes: H02J 7/0047 with monitoring or indicating devices or circuits
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles

Abstract

A system is provided for monitoring an energy-storing apparatus during a non-operating event of a mechanism that draws energy from the energy-storing apparatus, which includes a plurality of energy-storing cells. The system includes a plurality of sensing units, each of which is coupled to a subset of the plurality of cells and is configured to monitor conditions of the corresponding subset of cells during the non-operating event. The system further includes a wireless communication unit and a power source. The wireless communication unit is coupled to each of the sensing units and configured to communicate a signal indicative of one of the monitored conditions of the corresponding subset of cells to a computing device. The power source provides energy to the sensing units and the wireless communication unit during the non-operating event.

Claims

1. A system for monitoring an energy-storing apparatus during a non-operating event of a mechanism that draws energy from the energy-storing apparatus, the apparatus including a plurality of energy-storing cells, the system comprising:

a plurality of sensing units, each one of the sensing units being coupled to a subset of the plurality of cells, wherein each one of the sensing units is configured to monitor conditions of a corresponding subset of cells during the non-operating event, wherein the non-operating event corresponds to when electrical current is not flowing to or from the energy-storing apparatus;

a wireless communication unit coupled to each of the sensing units and configured to communicate a signal indicative of one of the monitored conditions of the corresponding subset of cells to a computing device, wherein the energy-storing apparatus is configured to provide energy to the plurality of sensing units and the wireless communication unit during an operating event;

a self-harvesting power source configured to provide energy to the plurality of sensing units and the wireless communication unit only when the non-operating event begins; and

a processor configured to switch a supply of the energy from the energy-storing apparatus to the self-harvesting power source when the non-operating event begins.

2. The system of claim 1, wherein the monitored conditions includes one of a voltage status, a temperature status, a strain status, and a pressure status.

3. The system of claim 1, wherein the self-harvesting power is generated by one of vibration energy or solar energy.

4. The system of claim 1, wherein each of the wireless communication unit and the self-harvesting power source is located within or outside the energy-storing apparatus.

5. The system of claim 1, wherein each subset of the plurality of cells comprises one cell and each of the plurality of sensing units is associated with one of the plurality of cells.

13. The system of claim 1, wherein the self-harvesting power is generated by vibration energy.

14. The system of claim 1, wherein the signal indicative of one of the monitored conditions is generated when one of the monitored conditions reaches a value outside of a predetermined range and when a duration of time over which the value is outside of the predetermined range exceeds a duration threshold.

6. A vehicle comprising:

a system for monitoring an energy-storing apparatus during a non-operating event of the vehicle, the apparatus including a plurality of energy-storing cells, the system comprising;

a plurality of sensing units, each one of the sensing units being coupled to a subset of the plurality of cells, wherein each one of the sensing units is configured to monitor conditions of a corresponding subset of cells during the non-operating event, wherein the non-operating event corresponds to when electrical current is not flowing to or from the energy-storing apparatus;

a wireless communication unit coupled to each of the sensing units and configured to communicate a signal indicative of one of the monitored conditions of the corresponding subset of cells to a computing device, wherein the energy-storing apparatus is configured to provide energy to the plurality of sensing units and the wireless communication unit during an operating event;

a power source configured to provide energy to the sensing units and the wireless communication unit only when the non-operating event begins; and

a processor configured to switch a supply of the energy from the energy-storing apparatus to the power source when the non-operating event begins.

7. The vehicle of claim 6, wherein the monitored conditions includes one of a voltage status, a temperature status, a strain status, and a pressure status.

8. The vehicle of claim 6, wherein the power source is a self-harvesting power source.

15. The system of claim 8, wherein the self-harvesting power source generates power by vibration energy.

16. The system of claim 6, wherein the signal indicative of one of the monitored conditions is generated when one of the monitored conditions reaches a value outside of a predetermined range and when a duration of time over which the value is outside of the predetermined range exceeds a duration threshold.

9. A method for monitoring an energy-storing apparatus during a non-operating event, the apparatus including a plurality of energy-storing cells, comprising:

monitoring conditions occurring within a subset of the plurality of cells during the non-operating event via a sensing unit associated with the subset of cells, wherein the non-operating event corresponds to when electrical current is not flowing to or from the energy-storing apparatus;

generating and communicating a signal indicative of one of the monitored conditions of the corresponding subset of cells to a computing device via a wireless communication unit coupled to the sensing unit;

providing energy to the sensing unit and the wireless communication unit via the energy-storing apparatus; and

switching from providing energy to the sensing unit and the wireless communication unit via the energy-storing apparatus to providing energy to the sensing unit and the wireless communication unit via a self-harvesting power source only when the non-operating event begins.

17. The method of claim 9, wherein the self-harvesting power is generated by vibration energy.

18. The method of claim 9, wherein the signal indicative of one of the monitored conditions is generated when one of the monitored conditions reaches a value outside of a predetermined range and when a duration of time over which the value is outside of the predetermined range exceeds a duration threshold.

10. A non-transitory computer readable medium including a processor for performing instructions corresponding to a method for monitoring an energy-storing apparatus during an non-operating event, the apparatus including a plurality of energy-storing cells, the method comprising:

monitoring conditions occurring within a subset of the plurality of cells during the non-operating event via a sensing unit associated with the subset of cells, wherein the non-operating event corresponds to when electrical current is not flowing to or from the energy-storing apparatus;

generating and communicating a signal indicative of one of the monitored conditions of the corresponding subset of cells to a computing device via a wireless communication unit coupled to the sensing unit; and

providing energy to the sensing unit and the wireless communication unit via the energy-storing apparatus; and

switching from providing energy to the sensing unit and the wireless communication unit via the energy storing apparatus to providing energy to the sensing unit and the wireless communication unit via a self-harvesting power source only when the non-operating event begins.

11. The non-transitory computer readable medium of claim 10, wherein the monitored conditions includes one of a voltage status, a temperature status, a strain status, and a pressure status.

12. The non-transitory computer readable medium of claim 10, wherein the indicative signal is generated when one of the monitored conditions reaches a corresponding threshold level.

19. The non-transitory computer readable medium of claim 10, wherein the self-harvesting power is generated by vibration energy.

20. The system of claim 10, wherein the signal indicative of one of the monitored conditions is generated and communicated when one of the monitored conditions reaches a value outside of a predetermined range and when a duration of time over which the value is outside of the predetermined range exceeds a duration threshold.