Alternator with current measurement

Patent metadata

Field	Value
Publication number	US-9647589-B2
Application number	US-201514746278-A
Country	US
Kind code	B2
Filing date	Jun 22, 2015
Priority date	Jun 22, 2015
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

An alternator is described that is configured to provide a current for powering one or more loads. The alternator includes an output port configured to output the current for powering the one or more loads, and one or more current sensors configured to measure a current level of at least a portion of the current being output via the output port to the one or more loads. The alternator further includes one or more communication ports configured to transmit information based on the current level measured by the one or more current sensors.

First claim

What is claimed is:

1. An alternator of a vehicle, the alternator comprising:
an output port configured to output a current for powering one or more loads of the vehicle;
one or more current sensors configured to measure a current level of at least a portion of the current being output via the output port to the one or more loads;
an alternator control unit; and
one or more communication ports configured to transmit information indicative of the current level measured by the one or more current sensors.

2. The alternator of claim 1 , wherein the alternator control unit is configured to:
receive, from the one or more current sensors, an indication of the current level measured by the one or more current sensors; and
transmit, via the one or more communication ports, the information.

3. The alternator of claim 2 , wherein the information is first information, the alternator further comprising:
a generator unit configured to produce the current for powering the one or more loads,
wherein the alternator control unit is further configured to:
receive, via the one or more communication ports, from an engine control unit of the vehicle, second information for adjusting the current level of at least a portion of the current being output via the first output to the one or more loads; and
control the generator unit based on the second information.

4. The alternator of claim 3 , wherein the alternator control unit is further configured to receive the second information, via the one or more communication ports, in response to transmitting, via the one or more communication ports, the first information.

5. The alternator of claim 2 , wherein:
the indication of the current level measured by the one or more current sensors comprises an analog signal; and
the information comprises a digital signal.

6. The alternator of claim 5 , wherein the digital signal comprises one or more messages that are formatted in accordance with a message based protocol.

7. The alternator of claim 2 , wherein:
the indication of the current level measured by the one or more current sensors comprises a digital signal.

8. The alternator of claim 1 , wherein the information is first information and the one or more communication ports comprise a first communication port, the alternator further comprising:
a generator unit configured to produce the current for powering the one or more loads; and
a second communication port configured to receive second information for adjusting the current level of at least a portion of the current being output via the first output to the one or more loads, wherein the alternator control unit is further configured to:
receive, via the second communication port, from an engine control unit of the vehicle, the second information; and
control the generator unit based on the second information.

9. The alternator of claim 8 , wherein the alternator control unit is further configured to receive the second information, via the second communication port, in response to the current sensor transmitting, via the first communication port, to the engine control unit of the vehicle, the first information.

10. The alternator of claim 2 , wherein:
the first information comprises an analog signal; and
the second information comprises a digital signal that includes one or more messages that are formatted in accordance with a message based protocol.

11. The alternator of claim 1 , wherein the current is a direct current, the alternator further comprising:
a rectifier for converting an alternating current generated by the alternator to the direct current for powering the one or more loads.

12. The alternator of claim 11 , wherein the rectifier comprises a plurality of phases and a single phase from the plurality of phases comprises the one or more current sensors.

13. The alternator of claim 11 , wherein the rectifier excludes the one or more current sensors.

14. The alternator of claim 1 , wherein the one or more current sensors comprise a Hall sensor.

15. An alternator of a vehicle, the alternator comprising:
an output port configured to output a direct current for powering one or more loads of the vehicle;
a rectifier for converting an alternating current generated by the alternator to the direct current for powering the one or more loads;
one or more current sensors configured to measure a current level of at least a portion of the current being output via the output port to the one or more loads;
an alternator control unit; and
one or more communication ports configured to transmit information indicative of the current level measured by the one or more current sensors.

16. The alternator of claim 15 , wherein the alternator control unit is configured to:
receive, from the one or more current sensors, an indication of the current level measured by the one or more current sensors; and
transmit, via a communication port, to an engine control unit (ECU) of the vehicle, the information.

17. The alternator of claim 15 , wherein the indication of the current level comprises an analog signal and the information comprises a digital signal that includes one or more messages that are formatted in accordance with a message based protocol.

18. An alternator configured to provide a direct current for powering one or more loads, the alternator comprising:
an output port configured to output the direct current for powering the one or more loads;
a rectifier for converting an alternating current generated by the alternator to the direct current for powering the one or more loads, wherein the rectifier comprises:
a plurality of phases including a single phase that comprises one or more current sensors, the current sensors being configured to measure a current level of at least a portion of the direct current being output via the output port to the one or more loads; and

one or more communication ports configured to transmit information based on the current level measured by the one or more current sensors.

19. The alternator of claim 18 , further comprising an control unit configured to:
receive, from the one or more current sensors, an analog signal as an indication of the current level measured by the one or more current sensors; and
transmit, via the one or more communication ports, to an engine control unit (ECU), the information as a digital signal that includes one or more messages that are formatted in accordance with a message based protocol.

20. The alternator of claim 18 , further comprising a generator unit configured to produce the alternating current.

Assignees

• Infineon Technologies Ag

Inventors

• Auer Frank
• Hartmann Robert
• Seidl Christoph

Classifications

• B60L2240/429

  Current · CPC title

• Y02T90/16

  Information or communication technologies improving the operation of electric vehicles · CPC title

• B60R16/03

  for supply of electrical power to vehicle subsystems {or for (circuit arrangements for charging batteries H02J7/00)} · CPC title

• H02P9/04 Primary

  Control effected upon non-electric prime mover and dependent upon electric output value of the generator · CPC title

• H02J3/38

  Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel · CPC title