Energy supply apparatus

Patent metadata

Field	Value
Publication number	US-11022993-B2
Application number	US-201816154323-A
Country	US
Kind code	B2
Filing date	Oct 8, 2018
Priority date	Oct 9, 2017
Publication date	Jun 1, 2021
Grant date	Jun 1, 2021

Abstract

The disclosure relates to an energy supply apparatus for the overcurrent-protected electric power supply to an electric consumer, including a power supply device configured to provide an electric current for the electric consumer, and a controllable power protection element configured to disable a supply of electric current to the electric consumer when the electric current reaches a first current limit value, wherein the controllable power protection element comprises an adjustable second current limit value set by the power supply device, wherein the power supply device receives an increased power requirement of the electric consumer within a time interval and to control the controllable power protection element for a duration of the time interval to set the second current limit value, and wherein the controllable power protection element disables the supply of the electric current to the electric consumer upon reaching the second current limit value by the electric current.

First claim

What is claimed is:

1. An energy supply apparatus for overcurrent-protected supply of electric power to an electric consumer, comprising:
a power supply device configured to provide an electric current for the electric consumer; and
a controllable power protection element configured to disable a supply of electric current to the electric consumer when the electric current reaches a first current limit value;
wherein the controllable power protection element comprises an adjustable second current limit value set by the power supply device;
wherein the second current limit value is higher than the first current limit value, wherein the power supply device is further configured to receive an increased power requirement of the electric consumer within a time interval and, in response to receiving the increased power requirement, to control the controllable power protection element for a duration of the time interval to set the second current limit value; and
wherein the controllable power protection element is configured, at the set second current limit value, to disable the supply of the electric current to the electric consumer upon reaching the second current limit value by the electric current.

2. The energy supply apparatus according to claim 1 , wherein the power supply device is configured to control the controllable power protection element after expiry of the time interval to set the first current limit value, and wherein the controllable power protection element is configured to disable the supply of the electric current to the electric consumer when the electric current reaches the first current limit value.

3. The energy supply apparatus according to claim 1 , wherein the power supply device is configured to detect the increased power requirement during an increasing current amplitude of the electric current.

4. The energy supply apparatus according to claim 3 , wherein the power supply device is configured to detect the increased power requirement during the increasing current amplitude of the electric current when an amplitude increase does not exceed a predetermined incremental limit value.

5. The energy supply apparatus according to claim 1 , wherein the controllable power protection element comprises a current path of the electric current, and wherein the controllable power protection element is configured to set the first current limit value or the second current limit value in the current path.

6. The energy supply apparatus according to claim 5 , wherein the controllable power protection element comprises a controllable circuit breaker arranged in the current path, wherein the controllable circuit breaker is configured to set the first current limit value or the second current limit value.

7. The energy supply apparatus according to claim 1 , wherein the controllable power protection element comprises a first current path with the first current limit value and a second current path with the second current limit value, and wherein the controllable power protection element is configured to interrupt the second current path to set the first current limit value and interrupt the first current path to set the second current limit value.

8. The energy supply apparatus according to claim 7 , wherein the controllable power protection element comprises a first circuit breaker with the first current limit value in the first current path and a second circuit breaker with the second current limit value in the second current path.

9. The energy supply apparatus according to claim 1 , wherein the power supply device is configured to detect a boost mode of the electric consumer, wherein the boost mode is when the electric consumer has reached the increased power requirement within the time interval.

10. The energy supply apparatus according to claim 1 , wherein the power supply device comprises a power monitor configured to monitor a power requirement to receive the increased power requirement.

11. The energy supply apparatus according to claim 1 , wherein the power supply device comprises a control output configured to output a control signal to set the respective current limit value by the controllable power protection element, wherein the controllable power protection element comprises a control input and wherein the control output is connected to the control input, and wherein the controllable power protection element is configured to set the relevant current limit value in response to a receipt of the control signal at the control input.

12. The energy supply apparatus according to claim 1 , wherein the power supply device is configured to adapt the time interval to adapt a period that the first or the second current limit value is set by the controllable power protection element.

13. The energy supply apparatus according to claim 1 , wherein the power supply device further comprises a power adapter configured to receive the electric power from a mains supply network and provide the electric power for the electric consumer.

14. The energy supply apparatus according to claim 1 , wherein the controllable power protection element is configured to limit a value of the electric current upon reaching the first current limit value and reaching the second current limit value.

15. A method for overcurrent-protected supply of electric power to an electric consumer, comprising:
providing, by a power supply device, an electric current configured for the electric consumer;
preventing, by a controllable power protection element, a supply of the electric current to the electric consumer when the electric current reaches a first current limit value, wherein the controllable power protection element comprises an adjustable second current limit value set by the power supply device, wherein the second current limit value is higher than the first current limit value;
controlling, by the power supply device, the controllable power protection element to set the second current limit value based at least in part on receiving, by the power supply device, an increased power requirement of the electric consumer within a time interval; and
disabling, by the controllable power protection element, the supply of the electric current to the electric consumer upon reaching the second current limit value within the time interval.

Assignees

• Phoenix Contact Gmbh & Co

Inventors

• Schmidt Olaf
• Alsdorf Lars
• Henkel Hartmut

Classifications

• H02H3/093

  with timing means {(in general H02H3/027; thermal delay H02H3/085; timing means for undervoltage protection H02H3/247)} · CPC title

• G01R19/16547

  voltage or current in AC supplies (switching for protection H02H; circuits for emergency power supply H02J9/00) · CPC title

• H02H3/08 Primary

  responsive to excess current (responsive to abnormal temperature caused by excess current H02H5/04) · CPC title

• G01R21/133

  by using digital technique · CPC title

• G05F1/66 Primary

  Regulating electric power · CPC title