Battery system module

• US 6,828,755 B1
• Filed: 10/15/2002
• Issued: 12/07/2004
• Est. Priority Date: 10/15/2001
• Status: Active Grant

• Current Assignee: CPS Technology Holdings, LLC
• Original Assignee: Johnson Controls Technology Company (Johnson Controls International plc)
• Inventors: Chen, Chih Y., Klos, Scott G., Iverson, Michael E., Dougherty, Thomas J., Green, Thomas J., Gondek, Mark M.
• Primary Examiner(s): Tibbits, Pia
• Application Number:
  US10/271,355
• Time in Patent Office: 784 Days
• Field of Search: 320/104, 429/100, 429/96-99, 429/121, 429/123, 429/178, 429/179, 307/43, 307/64, 307/66
• US Class Current: 320/104
• CPC Class Codes: B60R 16/03 for supply of electrical power to vehicle subsystems or for circuit arrangements for charging batteries H02J7/00
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/625 Vehicles
• CPC Class Codes: H01M 10/6563 with forced flow, e.g. by blowers
• CPC Class Codes: H01M 10/6566 Means within the gas flow to guide the flow around one or more cells, e.g. manifolds, baffles or other barriers H01M10/6565 takes precedence
• CPC Class Codes: H01M 10/667 the system being an electronic component, e.g. a CPU, an inverter or a capacitor
• CPC Class Codes: H01M 16/00 Structural combinations of different types of electrochemical generators
• CPC Class Codes: H01M 6/42 Grouping of primary cells into batteries H01M6/40 takes precedence
• CPC Class Codes: H02J 1/082 Plural DC voltage, e.g. DC supply voltage with at least two different DC voltage levels
• CPC Class Codes: H02J 1/14 Balancing the load in a network
• CPC Class Codes: H02J 2310/46 for ICE-powered road vehicles
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A module for a battery is disclosed. The module includes a power system in the container. The power system also includes a high voltage battery for powering high voltage loads. The power system also includes a low voltage battery for powering low voltage loads. The module also includes a converter at least partially in the container configured for directing power provided from the high voltage battery to the low voltage battery. The module also includes a device for disconnecting at least one of the high voltage battery from the high voltage loads and the low voltage battery from the low voltage loads. The container is configured to transfer heat from the battery system to an outside of the container. A module for thermal management of a battery system is also disclosed. An energy management system for a battery system is also disclosed.

Claims

1. A module for a battery comprising:

a container having a cover coupled to a base; and

a power system in the container comprising;

a high voltage battery for powering a plurality of high voltage loads;

a low voltage battery for powering a plurality of low voltage loads;

a converter at least partially in the container configured for directing power provided from the high voltage battery to the low voltage battery;

a device for disconnecting at least one of the high voltage battery from the plurality of high voltage loads and the low voltage battery from the plurality of low voltage loads;

wherein the container is configured to transfer heat from the power system to an outside of the container.

2. The module of claim 1 wherein the device comprises a switch.

3. The module of claim 2 wherein the high voltage loads are disconnected from the high voltage battery when the cover is decoupled from the base.

4. The module of claim 3 further comprising a door for accessing a plurality of fuses for the plurality of high voltage loads.

5. The module of claim 4 wherein the device is actuated by opening the door.

6. The module of claim 4 wherein the device comprises an actuator coupled to at least one of the door and the base and further comprises a sensor coupled to at least one of the door and the base.

7. The module of claim 6 wherein the device comprises a magnetic proximity sensor switch.

8. The module of claim 2 wherein the high voltage battery comprises a 36 volt battery and the low voltage battery comprises a 12 volt battery.

9. The module of claim 8 wherein the container further comprises a first interface configured for charging the 12 volt battery and a second interface for charging the 36 volt battery.

10. The module of claim 9 wherein the converter comprises a bi-directional DC to DC converter configured for directing power provided from the high voltage battery to the low voltage battery.

11. The module of claim 10 further comprising an inlet for the intake of air along a first air flow path for the transfer of heat from the power system and a second air flow path for the transfer of heat from the DC to DC converter.

12. A module comprising:

a container;

at least one high voltage battery provided in the container and configured to provide power to at least one high voltage load of a vehicle;

at least one low voltage battery provided in the container and configured to provide power to at least one low voltage load of a vehicle; and

a converter for transferring power between the at least one high voltage battery to the at least one low voltage battery;

wherein the container includes at least one aperture for transferring heat from the container.

13. The module of claim 12 wherein the container includes a cover coupled to a base.

14. The module of claim 13 further comprising a switch for disconnecting at least one of the at least one high voltage battery from at least one high voltage load and the at least one low voltage battery from at least one low voltage load.

15. The module of claim 14 wherein the module is configured to disconnect the at least one high voltage load from the at least one high voltage battery when the cover is decoupled from the base.

16. The module of claim 14 further comprising a door provided in the cover and wherein the switch is actuated by opening the door.

17. The module of claim 14 wherein the switch is a magnetic proximity sensor switch.

18. The module of claim 12 wherein the converter includes at least one fin for transferring heat from the converter.

19. The module of claim 12 wherein the at least one high voltage battery has a voltage of 36 volts and the at least one low voltage battery has a voltage of 12 volts.

20. The module of claim 12 further comprising a first interface for charging the at least one low voltage battery and a second interface for charging the at least one high voltage battery.

21. The module of claim 12 wherein the converter comprises a bi-directional DC to DC converter for directing power from the at least one high voltage battery to the at least one low voltage battery.

22. The module of claim 12 further comprising an inlet for providing air flow into the container.

23. The module of claim 22 wherein the container is configured to provide a first air flow path for transferring heat from the at least one low voltage battery and a second air flow path for transferring heat from the at least one high voltage battery.

24. The module of claim 22 wherein the inlet includes a baffle comprising a plurality of walls for providing a tortuous path for the air flow.

25. The module of claim 24 wherein the baffle is configured to inhibit the flow of debris into the container.

26. A module for a battery comprising:

a container;

at least one high voltage battery for providing power to at least one high voltage load in a vehicle;

at least one low voltage battery for providing power to at least one low voltage load in the vehicle;

a converter configured to transfer power between the at least one high voltage battery and the at least one low voltage battery;

an inlet for providing an air flow into the container; and

at least one outlet for allowing the air flow to escape the container;

wherein the container is configured to allow for removal of heat from the at least one low voltage battery and the at least one high voltage battery utilizing the air flow.

27. The module of claim 26 wherein the inlet includes a baffle that provides a tortuous path for the air flow.

28. The module of claim 27 wherein the baffle includes at least one vertical wall.

29. The module of claim 27 wherein the inlet is configured to provide the air flow into the container when the vehicle is moving and the baffle is configured to inhibit debris from entering the container.

30. The module of claim 26 wherein the container is configured to provide a first air flow path for removing heat from the at least one low voltage battery and a second air flow path for removing heat from the at least one high voltage battery.

31. The module of claim 26 further comprising an outlet for discharging debris from the inlet.

32. The module of claim 26 wherein the converter includes a plurality of heat exchange fins for removing heat from the converter.

33. The module of claim 32 wherein the container includes a cover and a base and the at least one aperture is provided in the cover.

34. The module of claim 33 wherein the plurality of heat exchange fins extend through the at least one aperture provided in the cover.

35. The module of claim 33 further comprising a device for disconnecting at least one of the at least one high voltage battery and the at least one low voltage battery from a load.

36. The module of claim 35 wherein the device comprises a switch that is actuated when the cover is decoupled from the base.

37. The module of claim 26 wherein the converter is a bi-directional converter.

38. The module of claim 26 wherein the at least one high voltage battery is a 36 volt battery and the at least one low voltage battery is a 12 volt battery.

39. The module of claim 26 further comprising a first switch configured to disconnect the at least one high voltage battery from the at least one high voltage load and a second switch configured to disconnect the at least one low voltage battery from the at least one low voltage load.

40. The module of claim 39 further comprising a control system configured to open the first switch when an engine of the vehicle is off and further configured to close the first switch when the charge of the at least one high voltage battery is greater than a predetermined value.

41. The module of claim 40 wherein the control system is further configured to open the second switch when a charging voltage applied to at least one of the at least one high voltage battery and the at least one low voltage battery is less than a predetermined value.

42. The module of claim 41 further comprising a sensor configured to provide a signal representative of the charging voltage.

43. The module of claim 42 further comprising a display configured to indicate the charging of at least one of the at least one low voltage battery and the at least one high voltage battery.