Current transmission sub-device of a current-excited synchronous machine as a drive motor in a hybrid on electric vehicle

Patent metadata

Field	Value
Publication number	US-12328039-B2
Application number	US-202218288204-A
Country	US
Kind code	B2
Filing date	May 12, 2022
Priority date	Jun 21, 2021
Publication date	Jun 10, 2025
Grant date	Jun 10, 2025

Abstract

A high-voltage accumulator module having a multiplicity of battery cells arranged in a honeycombed parallel- and series connection assembly (for example, “honeycomb”). The gaps between the battery cells are filled with a thermally and electrically conductive potting compound. The battery cells are electrically insulated with respect to the potting compound. The potting compound is connected to an energy source via electrically conductive fixing elements that protrude into the potting compound and via two pole connections in such a way that a current flow through the potting compound which is as homogenous as possible is achieved. The two pole connections, for example, in the form of metal plates, may be fastened to the potting compound over a large surface area and in close electrical contact therewith by the fixing elements. The fixing elements may protrude as deep as possible into the potting compound in the form of strips or pins and may contain barbs.

First claim

The invention claimed is:

1. A current transmission sub-device of a current-excited synchronous machine, a rotor of which has slip rings for a current supply and is contacted and supplied with electrical energy by carbon brushes, the current transmission sub-device comprising:
at least one brush compartment for receiving a carbon brush, wherein the carbon brush has a pre-mounted stranded conductor and wherein the at least one brush compartment is applied on a brush carrier and has a stranded-conductor guide, in such a way that the carbon brush is insertable into the brush compartment and the pre-mounted stranded conductor is insertable through the stranded-conductor guide for connection to the brush carrier so as to reduce flapping;
wherein the stranded-conductor guide is configured as a recess disposed at a lateral side of the at least one brush compartment and a bridge-like connection from an upper edge of the recess of the at least one brush compartment to the brush carrier, at a distance from the carbon brush.

2. The current transmission sub-device according to claim 1 , wherein the upper edge of the recess protrudes beyond the carbon brush to the brush carrier, at a distance from the carbon brush.

3. The current transmission sub-device according to claim 2 , wherein the bridge-like connection extends from a left edge of the recess to a right edge of the recess of the at least one brush compartment, at a distance from the carbon brush.

4. The current transmission sub-device according to claim 1 , wherein the bridge-like connection extends from a left edge of the recess to a right edge of the recess of the at least one brush compartment, at a distance from the carbon brush.

5. A current transmission sub-device of a current-excited synchronous machine, a rotor of which has slip rings for a current supply and is contacted and supplied with electrical energy by carbon brushes, the current transmission sub-device comprising:
at least one brush compartment for receiving a carbon brush, wherein the carbon brush has a pre-mounted stranded conductor and wherein the at least one brush compartment is applied on a brush carrier and has a stranded-conductor guide, in such a way that the carbon brush is insertable into the brush compartment and the pre-mounted stranded conductor is insertable through the stranded-conductor guide for connection to the brush carrier so as to reduce flapping;
wherein the stranded-conductor guide is configured as a recess disposed at a front side of the at least one brush compartment and a bridge-like connection from an upper edge of the recess, which protrudes beyond the carbon brush to the brush carrier, at a distance from the carbon brush.

6. The current transmission sub-device according to claim 5 , wherein the bridge-like connection extends from a left edge of the recess to a right edge of the recess of the at least one brush compartment, at a distance from the carbon brush.

7. A current transmission sub-device of a current-excited synchronous machine, a rotor of which has slip rings for a current supply and is contacted and supplied with electrical energy by carbon brushes, the current transmission sub-device comprising:
at least one brush compartment for receiving a carbon brush, wherein the carbon brush has a pre-mounted stranded conductor and wherein the at least one brush compartment is applied on a brush carrier and has a stranded-conductor guide, in such a way that the carbon brush is insertable into the brush compartment and the pre-mounted stranded conductor is insertable through the stranded-conductor guide for connection to the brush carrier so as to reduce flapping;
wherein the stranded-conductor guide is configured as a recess disposed at a front side of the at least one brush compartment and a bridge-like connection from a left edge of the recess to a right edge of the recess of the at least one brush compartment, at a distance from the carbon brush.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Moerth Philip

Classifications

• H02K13/003

  Structural associations of slip-rings · CPC title

• H01R39/415

  with self-recoiling spring · CPC title

• H01R39/385

  Means for mechanical fixation of the brush holder · CPC title

• H01R39/383

  characterised by the electrical connection to the brush holder · CPC title

• H01R39/36

  Connections of cable or wire to brush · CPC title