Apparatus and method for determining the temperature of a charging power source

• US 7,672,798 B2
• Filed: 09/06/2002
• Issued: 03/02/2010
• Est. Priority Date: 06/27/2002
• Status: Active Grant

• Current Assignee: SPX Corporation
• Original Assignee: SPX Corporation
• Inventors: Sontheimer, Paul, Murphy, Jason, Raichle, Kurt
• Primary Examiner(s): West; Jeffrey R
• Application Number:
  US10/235,798
• Publication Number:
  US 20040002825A1
• Time in Patent Office: 2,734 Days
• Field of Search: 702/57, 702/60, 702/62, 702/63, 702/99, 702/134, 702/135, 702/182, 320/134, 320/136, 320/153
• US Class Current: 702/63
• CPC Class Codes: H01M 10/46 Accumulators structurally combined with charging apparatus circuits for charging H02J7/00
• CPC Class Codes: H01M 10/486 for measuring temperature
• CPC Class Codes: H02J 7/007194 of the battery
• CPC Class Codes: Y02B 40/00 Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02E 60/13 Energy storage using capacitors

Abstract

A method and apparatus for automatically sensing the temperature of a battery during the testing and charging. The method and apparatus can monitor the temperature of the battery, the charger or both. Additionally, a user can be notified when the temperature is at or exceeds a predetermined level. The temperature data is also used to aid in efficiently charging the battery.

Claims

1. A battery charging apparatus, comprising:

a battery charger having a microprocessor that comprises a field programmable gate array, which receives a set-point value, said battery charger having a housing for receiving a battery, wherein the microprocessor is linked to the battery charger;

an automatic temperature sensor linked to the microprocessor;

a connection using at least one clamp to connect to the battery;

a comparator that compares a voltage upstream from the connection of the clamp with a voltage at the connection of the clamp to test a quality of the clamp connection to the battery; and

a module in communication with the microprocessor, and adapted to communicate with similar modules of other battery chargers to network the battery charger with other battery chargers,

wherein the battery charger determines at which point in a sine wave to allow voltage or current to pass through to the battery to be charged based on a sine value selected, wherein the selected sine value is determined by observing an end-point of the sine wave and following along the sine wave in a rearward direction, the sine value defining a mean voltage or mean current for pass through.

2. The apparatus as in claim 1, further comprising a battery tester that is linked to the microprocessor.

3. The apparatus as in claim 1, wherein the temperature sensor is located within the housing and exterior to the battery in order to record the temperature of the battery.

4. The apparatus as in claim 1, wherein the temperature sensor detects the temperature of the charger.

5. The apparatus as in claim 4, wherein the temperature sensor is an infrared sensor.

6. The apparatus as in claim 4, wherein when the temperature detected by the temperature sensor is at or above a predetermined temperature, an operator is notified.

7. The apparatus as in claim 6, wherein the operator can be notified from a group consisting of a display, a pager, a fax, an e-mail, a phone, a PDA, a computer, other communication means, and a combination thereof.

8. The apparatus as in claim 1, wherein the temperature sensor detects the temperature of a charging battery.

9. The apparatus as in claim 8, wherein the detected temperature is transmitted to the microprocessor.

10. The apparatus as in claim 9, wherein the microprocessor alters the charging rate based upon the detected temperature.

11. The apparatus as in claim 8, wherein when the temperature detected by the temperature sensor is at or above a predetermined temperature, an operator is notified.

12. The apparatus as in claim 11, wherein the operator can be notified from a group consisting of a display, a pager, a fax, an e-mail, a phone, a PDA, a computer, other communication means, and a combination thereof.

13. The apparatus as in claim 1, further comprising a control input/output port linked to the microprocessor.

14. The apparatus of claim 1, wherein the battery is a lead-acid battery.

15. A method for detecting the properties of a charging battery, comprising:

locating a battery within a housing of a battery charger;

providing a temperature sensor within the housing and exterior to the battery in order to record a temperature of the battery;

transmiffing a set-point value to the battery charger;

determining at which point in a sine wave to allow voltage or current to pass through to the battery, based on a selected sine value, wherein the selected value is determined by observing an end-point of the sine wave and following along the sine wave in a rearward direction, the sine value defining a mean voltage or mean current for pass through;

applying a load to the battery;

automatically monitoring the temperature of the battery in response to a load; and

transmitting the temperature to a microprocessor that comprises a field programmable gate array;

determining a quality of a connection of the battery charger with the battery by comparing voltages at different locations; and

networking the battery charger with another battery charger and communicating between the networked battery chargers via a connection.

16. The method as in claim 15, further comprising the steps of analyzing the temperature of the battery and comparing the temperature to a reference point.

17. The method as in claim 16, further comprising the steps regulating the load to the battery if the temperature of the battery exceeds the reference point.

18. The method of claim 17, further comprising the step of adjusting the load to the battery in response to the temperature falling below the reference point.

19. The method of claim 17, wherein the temperature sensor is an infrared detector within the housing and directing the infrared detector at the battery.

20. The method of claim 19, wherein the step of transmitting the temperature is accomplished with a wireless device.

21. The method of claim 16, wherein when the temperature is at or exceeds the reference point an operator can be notified.

22. The method of claim 15, wherein the determining step is performed by the field programmable gate array.

23. The method of claim 15, wherein the battery is a lead-acid battery.

24. An apparatus for detecting the properties of a charging battery, comprising:

means for receiving a battery in a battery charger;

means for detecting temperature located in the receiving means;

means for transmitting a set-point value to the battery charger;

means for determining at which point in a sine wave to allow voltage or current to pass through to the battery based on a selected sine value, wherein the selected value is determined by observing an end-point of the sine wave and following along the sine wave in a rearward direction, the sine value defining a mean voltage or mean current for pass through;

means for applying a load to the battery;

means for automatically monitoring a temperature of the battery in response to the load; and

means for transmitting the temperature to a microprocessor that comprises a field programmable gate array;

means for determining a quality of the connection of the battery charger with the battery; and

means for networking the battery charger with another battery charger and communicating between the networked battery chargers via a connection.

25. The apparatus of claim 24, further comprising a means for analyzing the temperature of the battery and means for comparing the temperature to a reference point.

26. The apparatus of claim 25, further comprising means for regulating the load to the battery if the temperature of the battery exceeds the reference point.

27. The apparatus of claim 26, further comprising means for adjusting the load to the battery in response to the temperature falling below the reference point.

28. The apparatus of claim 26, further comprising a means to notify an operator when the temperature is at or exceeds the reference point.

29. The apparatus of claim 24, wherein the battery is a lead-acid battery.