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US 2019/0356181 A1Published application
Stator For An Electric Motor
Assigneeebm-papst Mulfingen GmbH & Co. KG
InventorsMichael STURM, Werner MUELLER, Thomas EHRLER
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Abstract
A stator (1) for an electric motor has a modular stator body (2) with at least two stator cores (10, 20) arranged axially in series. Each core (10, 20) is form from a plurality of stacked electrical laminations (11, 21). This forms winding poles (16, 26) with radially extending winding webs (17, 27). The stator cores (10, 20) each have a separate overmolding (U1, U2).
Claims11
A stator for an electric motor comprising:
- a modular stator body including at least two stator cores arranged axially in series, each stator core is formed from a plurality of stacked electrical laminations that form winding poles with radially extending winding webs;
- the stator cores each have a separate overmolding, the respective overmolding is applied to the inner surface of the respective stator core in the winding region, to the winding webs and to the pole slots (N) between the winding poles.
A method for producing a stator comprising the steps of:
- providing a first stator core formed from a plurality of stacked electrical laminations;
- overmolding plastic onto the first stator core;
- providing at least one additional stator core formed from a plurality of stacked electrical laminations;
- overmolding plastic onto the at least one additional stator core;
- aligning the stator cores axially with one another;
- connecting the first and at least the second stator core mechanically at end-face connectors;
- and
- forming a stator body.
5 more elements
Dependencies are inferred from the claim text.