Electric machine with circuit board assembly for winding wiring and method of manufacture

Abstract

The invention relates to an electric machine (1) having a stator (2) with an electrical winding having a plurality of electrically conductive bars (5) arranged in the stator (2) In the plurality of grooves (4) and each of the bars has a first cross-section (21) in the area of ​​the grooves (4), and an inverter for controlled supply of current to the winding A circuit (9), wherein the inverter circuit (9) is electrically interconnected with the winding and / or with the bars via at least one circuit board assembly (8). The invention proposes that the at least one circuit board assembly (8) has a through hole (11) having a diameter smaller than the largest dimension (12) of the first cross section (21), in the rods (5) A rod end (10) of a rod is correspondingly inserted through a through hole (11), wherein the rod end (10) inserted through has a second cross section in the region of the through hole (11) (22), the second cross-section has a maximum dimension (13) smaller than or equal to the diameter of the through hole (11).

Description

technical field

[0001] The invention relates to an electric machine having a stator with an electrical winding made up of a plurality of electrically conductive bars. The electrical winding is electrically connected to the inverter circuit via at least one circuit board assembly. The bars of the winding can also be electrically connected to each other in pairs via the circuit board assembly. A method for manufacturing the electric machine also belongs to the invention. Background technique

[0002] The windings of the stator of an electric machine are usually made of wire separately from the inverter electronics (ie the inverter circuit) and are then connected to the inverter circuit. If the winding consists of conductive rods (rod winding), the connection of the phase terminals of the winding to the printed circuit board of the inverter circuit takes place via plug-in connections, press-fit contacts or sleeves in the printed circuit board . These additional contact elem...

Examples

Embodiment Construction

[0031] The examples set forth below are preferred embodiments of the invention. In these examples, the described components of these embodiments present individual features of the invention which can be considered independently of each other, which also respectively improve the invention independently of each other and which can therefore also be used individually or in combination with the illustrated Combinations different from the ones listed are considered to be part of the present invention. Furthermore, the described embodiments can also be supplemented by other features of the invention that have already been described.

[0032] In the figures, functionally identical elements are provided with the same reference symbols.

[0033] figure 1 An electric machine 1 is shown, wherein the electric machine can be, for example, an electric starter or an electric starter-generator for a motor vehicle. In the stator 2 is shown a sheet metal pack 3 of the stator. The per se kno...

technical field

[0001] The invention relates to an electric machine having a stator with an electrical winding made up of a plurality of electrically conductive bars. The electrical winding is electrically connected to the inverter circuit via at least one circuit board assembly. The bars of the winding can also be electrically connected to each other in pairs via the circuit board assembly. A method for manufacturing the electric machine also belongs to the invention. Background technique

[0002] The windings of the stator of an electric machine are usually made of wire separately from the inverter electronics (ie the inverter circuit) and are then connected to the inverter circuit. If the winding consists of conductive rods (rod winding), the connection of the phase terminals of the winding to the printed circuit board of the inverter circuit takes place via plug-in connections, press-fit contacts or sleeves in the printed circuit board . These additional contact elem...

Examples

Embodiment Construction

[0031] The examples set forth below are preferred embodiments of the invention. In these examples, the described components of these embodiments present individual features of the invention which can be considered independently of each other, which also respectively improve the invention independently of each other and which can therefore also be used individually or in combination with the illustrated Combinations different from the ones listed are considered to be part of the present invention. Furthermore, the described embodiments can also be supplemented by other features of the invention that have already been described.

[0032] In the figures, functionally identical elements are provided with the same reference symbols.

[0033] figure 1 An electric machine 1 is shown, wherein the electric machine can be, for example, an electric starter or an electric starter-generator for a motor vehicle. In the stator 2 is shown a sheet metal pack 3 of the stator. The per se kno...

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