Pre-Charging Switch Arrangement, Power Supplying Arrangement and Method For Connecting a Load to a High Direct-Current Voltage Source

Patent metadata

Field	Value
Publication number	US-2016362004-A1
Application number	US-201615248718-A
Country	US
Kind code	A1
Filing date	Aug 26, 2016
Priority date	Feb 28, 2014
Publication date	Dec 15, 2016
Grant date	—

Abstract

A pre-charging switch arrangement for charging a capacitor of a direct-current circuit is disclosed. The pre-charging switch arrangement has a pre-charging resistor, a pre-charging switch, and a voltage detection device connected to the pre-charging resistor and detecting a voltage across the pre-charging resistor.

First claim

What is claimed is:

1 . A pre-charging switch arrangement for charging a capacitor of a direct-current circuit, comprising:
a pre-charging resistor; a pre-charging switch; and a voltage detection device connected to the pre-charging resistor and detecting a voltage across the pre-charging resistor.

2 . The pre-charging switch arrangement of claim 1 , wherein the voltage detection device has a first voltage divider connected to an input side of the pre-charging resistor.

3 . The pre-charging switch arrangement of claim 1 , wherein the voltage detection device has a comparator comparing the voltage across the pre-charging resistor with a reference voltage from a direct-current voltage source.

4 . The pre-charging switch arrangement of claim 3 , wherein the direct-current voltage source is a direct-current voltage converter.

5 . The pre-charging switch arrangement of claim 4 , wherein the direct-current voltage source is connected to the comparator by a second voltage divider.

6 . The pre-charging switch arrangement of claim 5 , wherein a control input of the pre-charging switch is connected to an input of the direct-current voltage converter.

7 . The pre-charging switch arrangement of claim 6 , wherein an output of the comparator is connected to an input of a transmission unit.

8 . The pre-charging switch arrangement of claim 7 , wherein an output of the transmission unit is galvanically separated from the input of the transmission unit.

9 . The pre-charging switch arrangement of claim 8 , wherein the output of the transmission unit is connected to the input of the direct-current voltage converter.

10 . The pre-charging switch arrangement of claim 9 , wherein a supply line of the comparator, an output of the direct-current voltage converter, the input of the transmission unit, the first voltage divider, and the second voltage divider have a common reference potential connected to a line section connecting the pre-charging resistor to the pre-charging switch.

11 . The pre-charging switch arrangement of claim 10 , wherein the first voltage divider, the second voltage divider, the pre-charging resistor, the pre-charging switch, the comparator, the transmission unit, and the direct-current voltage converter form a component group disposed in a housing.

12 . A power supplying arrangement, comprising:
a direct-current circuit connecting a high direct-current voltage source to a capacitor and having a controllable first switch and controllable second switch each arranged between a pole of the high direct-current voltage source and the capacitor; and a pre-charging switch arrangement connected in parallel with the controllable second switch and having a pre-charging resistor, a pre-charging switch, and a voltage detection device connected to the pre-charging resistor detecting a voltage across the pre-charging resistor.

13 . The power supplying arrangement of claim 12 , wherein the pre-charging switch arrangement is connected to the direct-current circuit only by two high-voltage connections, one high voltage connection on each side of the controllable second switch.

14 . A method for connecting a load to a high direct-current voltage source, comprising:
connecting the load to the high direct-current voltage source depending on a voltage across a pre-charging resistor arranged between the high direct-current voltage source and the load.

15 . The method for connecting a load to a high direct-current voltage source of claim 14 , wherein a direct-current circuit connects the high direct-current voltage source to the load and has a controllable first switch and a controllable second switch each arranged between a pole of the high direct-current voltage source and the capacitor.

16 . The method for connecting a load to a high direct-current voltage source of claim 15 , wherein a pre-charging switch arrangement connected in parallel with the controllable second switch has the pre-charging resistor, a pre-charging switch, and a voltage detection device connected to the pre-charging resistor detecting the voltage across the pre-charging resistor.

17 . The method for connecting a load to a high direct-current voltage source of claim 16 , wherein, when the voltage across the pre-charging resistor is below a reference voltage, the pre-charging switch is opened and the pre-charging switch arrangement is switched into a powerless state.

Assignees

• Te Connectivity Germany Gmbh

Inventors

• Einhorn Jorg

Classifications

• H02M1/36 Primary

  Means for starting or stopping converters · CPC title

• B60L2270/20

  Inrush current reduction, i.e. avoiding high currents when connecting the battery · CPC title

• B60L3/04

  Cutting off the power supply under fault conditions (protective devices and circuit arrangements in general H01H; H02H) · CPC title

• B60L2210/10

  DC to DC converters · CPC title

• B60L50/51

  characterised by AC-motors · CPC title