Remote battery monitoring systems and sensors

• US 20050038614A1
• Filed: 11/27/2002
• Published: 02/17/2005
• Est. Priority Date: 11/27/2001
• Status: Abandoned Application

• Current Assignee: SYS Technologies (San Diego) (Kratos Defense & Security Solutions Incorporated)
• Original Assignee: SYS Technologies (San Diego) (Kratos Defense & Security Solutions Incorporated)
• Inventors: Bevis, Jeff, Botts, Steve
• Application Number:
  US10/495,842
• Publication Number:
  US 20050038614A1
• Time in Patent Office: Days
• US Class Current: 702/63
• 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 31/3842 combining voltage and current measurements
• 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: H01M 10/482 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 10/486 for measuring temperature
• CPC Class Codes: H01M 50/569 Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals battery terminal connectors with integrated measuring arrangements G01R31/364
• CPC Class Codes: H02J 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• CPC Class Codes: H02J 7/005 Detection of state of health [SOH]
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A remote battery monitoring system and sensors are disclosed in which a plurality of telesensors are connected to batteries in a battery string. The telesensor measure battery data such as voltage, current, and temperature and wirelessly transmit the battery data to a control and collection unit. The control and collection unit receives, processes, analyzes, and stores the battery data. Remote monitoring software running on the control and collection unit can be configured to provide warning alarms when the battery data is outside present limits.

Claims

1. A remote battery monitoring system for monitoring the health and/or status of a plurality of batteries arranged in a battery string, the system comprising:

a plurality of telesensors, each telesensor connected to a battery in the battery string;

a control and collection unit wirelessly coupled to the plurality of telesensors;

wherein each telesenor is configured measure battery data representing the health and/or status of the battery to which it is connected and to wirelessly transmit the battery data to the control and collection unit; and

wherein the control and collection unit is configured to receive and process the battery data from the plurality telesensors.

2. The system of claim 1 wherein each telesensor comprises a voltage telesensor configured to measure battery voltage.

3. The system of claim 2 further comprising a current telesensor attached to the battery string the current telesensor configured to measure current in the battery string.

4. The system of claim 1 wherein each telesensor comprises a shunt telesensor configured to measure battery voltage and current.

5. The system of claim 1 wherein each telesensor is configured to measure battery temperature.

6. The system of claim 1 wherein the control and collection unit comprises:

a HUB configured for wirelessly communicating with the plurality of telesensors to receive battery data from the plurality of telesensors; and

a monitoring unit configured for receiving the battery data from the HUB and for processing and storing the battery data.

7. The system of claim 6 wherein the HUB is located at the battery string site and the monitoring unit is located remotely from the battery string site.

8. The system of claim 6 wherein the HUB comprises:

a gateway; and

a master unit telesensor connected to the gateway;

wherein the master unit telesensor is configured to wirelessly communicate with the plurality of telesensors and the gateway is configured to provide a communication link to the monitoring unit.

9. The system of claim 8 wherein the gateway is configured to connect the monitoring unit to the master unit telesensor through a wide area network.

10. The system of claim 6 wherein the monitoring unit comprises:

an applications server configured to store battery data; and

a user workstation configured to access and display the battery data.

11. The system of claim 6 wherein the HUB and monitoring unit are located remotely from the plurality of telesensors.

12. The system of claim 11 wherein the monitoring unit comprises a user workstation and the HUB comprises a master unit telesensor connected to the user workstation.

13. The system of claim 6 further comprising remote monitoring software running on the monitoring unit, the remote monitoring software configured to process and analyze battery data.

14. The system of claim 13 wherein the remote monitoring software is further configured for triggering warning alarms when the battery data falls outside of preprogrammed operating limits.

15. The system of claim 1 wherein the control and collection unit is further configured to provide control signals to the plurality of telesensors requesting that battery data measurements be made.

16. The system of claim 1 wherein each telesensor is further configured to wirelessly transmit information regarding the status of the telesensor to the control and collection unit.

17. The system of claim 1 wherein each telesensor comprises:

a radio for wirelessly transmitting battery data; and

a processor for providing the telesensor with control and measurements capabilities.

18. The system of claim 1 wherein each telesensor is configured to receive power parasitically from the battery to which it is attached.

19. A telesensor for measuring the health and/or status of a battery, the telesensor comprising:

an analog interface circuit for receiving analog inputs from a battery and converting the analog inputs into digital signals;

a processor connected to the analog interface circuit for receiving the digital signals from the analog interface circuit and for processing data encoded in the digital signals into battery data;

a radio connected to the processor for receiving the battery data from the processor and for wirelessly transmitting the battery data to a remote unit.

20. The telesensor of claim 19 wherein the battery data comprises the battery voltage.

21. The telesensor of claim 19 wherein the battery data comprises discharge current.

22. The telesensor of claim 19 wherein the battery data comprises charge current.

23. The telesensor of claim 19 wherein the battery data comprises battery temperature.

24. The telesensor of claim 19 wherein the telesensor is configured to receive power parasitically from the battery.

25. The telesensor of claim 19 further comprising a Hall Effect current measuring transducer.

26. The telesensor of claim 19 wherein the processor further comprises a debug/configuration input for use in setting up and maintaining the telesensor.

27. The telesensor of claim 19 wherein the analog interface circuit further comprises scaling amplifiers configured to provide different gains during battery charge and battery discharge conditions.

28. The telesensor of claim 19 further comprising a sign indication circuit configured to indicate either a battery charge or battery discharge condition.

29. The telesensor of claim 19 further comprising an ID chip for providing a unique electronic identification symbol.

30. The telesensor of claim 19 further comprising operational firmware for initializing and controlling operation of the telesensor.

31. A method for initializing and controlling operation of a telesensor configured to measure the health and/or status of a battery, the method comprising the steps of:

loading default initialization parameters into the telesensor;

determining a unique ID for the telesensor;

conducting a telesensor self test;

determining whether the telesensor has received a serial port configuration signal;

determining whether the telesensor is a master or slave telesensor;

loading telesensor specific configuration parameters into the telesensor.

32. The method of claim 31 wherein the telesensor is a slave telesensor, the method further comprising:

waking the telesensor up from sleep mode;

measuring battery data;

temporarily storing the battery data;

scaling the stored battery data;

forming packets including the scaled data;

wirelessly transmitting the packets to a remote unit.

33. The method of claim 32 wherein the step of wirelessly transmitting further comprises:

selecting a transmission channel from a hop list;

switching on a radio subsystem of the telesensor;

starting a media access control process which transmits the packets to the remote unit via the selected transmission channel;

switching the radio subsystem into a low-power sleep state.

34. The method of claim 31 wherein the telesensor is a master telesensor, the method further comprising:

loading master telesensor configuration parameters into the master telesensor;

switching on a radio subsystem of the telesensor;

starting a media access control process which receives packets from a remote slave telesensor;

extracting and formatting data from the received packets;

switching the radio subsystem into a low-power sleep mode;

transmitting the formatted data to a monitoring unit.