THROTTLE FOR ELECTRICALLY-DRIVEN CHARGING DEVICES

• US 20200135377A1
• Filed: 06/26/2018
• Published: 04/30/2020
• Est. Priority Date: 06/26/2017
• Status: Active Grant

• Current Assignee: BorgWarner Incorporated
• Original Assignee: BorgWarner Incorporated
• Inventors: GLASS, Thomas, HORNBACH, Johannes, GRUNDMEIER, Ramona
• Granted Patent: US 11,482,366 B2
• Time in Patent Office: Days
• CPC Class Codes: F02B 33/36 of positive-displacement type
• CPC Class Codes: F02B 39/10 electric
• CPC Class Codes: H01F 17/06 with core substantially closed in itself, e.g. toroid
• CPC Class Codes: H01F 2017/065 Core mounted around conductor to absorb noise, e.g. EMI filter
• CPC Class Codes: H02K 11/02 for suppression of electromagnetic interference
• CPC Class Codes: H02K 11/33 Drive circuits, e.g. power electronics H02K11/38 takes precedence
• CPC Class Codes: H02M 1/14 Arrangements for reducing ripples from dc input or output
• CPC Class Codes: H02M 7/003 Constructional details, e.g. physical layout, assembly, wiring or busbar connections

Abstract

One aspect of the present disclosure relates to a power electronics device for an electrically-driven charging device for an engine, said power electronics device comprising one or more power electronics components which are designed to operate an electrically-driven charging device for an engine, first and second conductors for guiding current for the one or more power electronics components, and a throttle for filtering electromagnetic interference. The throttle has a magnetic core which forms a closed ring about the first and second conductors and comprises a tongue which extends, arising from the closed ring, between the first and second conductors.

Claims

1. A power electronics device (9) for an electrically-driven charging device for an engine, comprising:

one or more power electronics components which are designed to operate an electrically-driven charging device (1) for an engine;

first and second conductors (72, 73) for guiding current for the one or more power electronics components; and

a throttle (81;

80) for filtering electromagnetic interference,

wherein the throttle (81;

80) has a magnetic core (30;

60) which forms a closed ring (37;

67) about the first and second conductors (33, 34;

72, 73) and comprises a tongue (38;

68) which extends, arising from the closed ring (37;

67), between the first and second conductors (33, 34;

72, 73).

2. The power electronics device according to claim 1, wherein the tongue (38;

68) extends across at least 65% of an inner distance of a first side of the closed ring (37;

67) of the magnetic core (30;

60) from a second side of the closed ring (37;

67) spaced apart from the first side and lying opposite to the same.

3. The power electronics device according to claim 1, wherein the tongue (38;

68) is separated from the closed ring (37;

67) by a gap (39;

69).

4. The power electronics device according to claim 1, wherein the magnetic core (30;

60) is defined by a first and a second elongated slot (63, 66), wherein the first slot (63) accommodates the first conductor (72), and the second slot (66) accommodates the second conductor (73).

5. The power electronics device according to claim 4, wherein the first and second slots (63, 66) are arranged in the magnetic core (60) offset with respect to one another.

6. The power electronics device according to claim 1, wherein the closed ring (67) defines a substantially parallelogram-shaped but not rectangular cross section in a plane of the magnetic flow lines of the first and second conductors (72, 73).

7. The power electronics device according to claim 1, wherein the tongue (68) has a substantially parallelogram-shaped but not rectangular cross section in a plane perpendicular to a direction of a current flow through the conductors (72, 73).

8. The power electronics device according to claim 1, wherein the throttle (81;

80) is designed to suppress the propagation of common-mode and differential-mode interference through the first and second conductors (33, 34;

72, 73).

9. The power electronics device according to claim 1, wherein the throttle (81;

80) is designed such that, beginning at a certain direct current level, which flows through the conductors (33, 34;

72, 73), a common-mode interference filtering effect remains maintained while a differential-mode interference filtering effect subsides.

10. The power electronics device according to claim 1, wherein the magnetic core (30;

60) is configured as one piece.

11. The power electronics device according to claim 1, wherein the magnetic core (30;

60) is placed over the first and second conductors (33, 34;

72, 73) or vice versa.

12. The power electronics device according to claim 1, additionally comprising:

a carrier (70) on which the magnetic core (60) is placed,

wherein the first and second conductors (72, 73) are connected to the carrier (70),

wherein the carrier (70) comprises connection elements (77a, 77b) for contacting the first and second conductors (72, 73).

13. The power electronics device according to claim 1, wherein the throttle comprises a second magnetic core, which is configured as described in claim 1, wherein the two magnetic core are optionally arranged one behind the other.

14. The power electronics device according to claim 13, wherein the two magnetic cores are manufactured from different materials.

15. A method for producing a power electronics device (9) for an electrically-driven charging device for an engine, comprising:

providing one or more power electronics components which are designed to operate an electrically-driven charging device (1) for an engine;

providing first and second conductors (33, 34;

72, 73) for guiding current for the one or more power electronics components;

assembling a magnetic core (30;

60) and the first and second conductors (33, 34;

72, 73) together, wherein the magnetic core (30;

60) forms a closed ring (37;

67) about the first and second conductors (72, 73) and comprises a tongue (38;

68) which extends, arising from the closed ring (37;

67), between the first and second conductors (33, 34;

72, 73); and

joining the one or more power electronics components, the first and second conductors (33, 34;

72, 73), and the magnetic core (30;

60) to form the power electronics device (9).