US 11,735,986 B2
Electrical machine for a vehicle
Roberto Almeida E Silva, Stuttgart (DE); Bernd Blankenbach, Boeblingen (DE); Terry Cox, Swinford (GB); Philip Grabherr, Stuttgart (DE); Niklas Kull, Stuttgart (DE); Tim Male, Telford (GB); Peter Pisek, Leitring (AT); Peter Sever, Murska Sobota (SI); Josef Sonntag, Nuertingen (DE); and Martin Williams, Northkampton (GB)
Assigned to Mahle International GmbH, Stuttgart (DE)
Filed by Mahle International GmbH, Stuttgart (DE)
Filed on Nov. 19, 2019, as Appl. No. 16/689,047.
Claims priority of application No. 10 2018 219 818.7 (DE), filed on Nov. 19, 2018.
Prior Publication US 2020/0161947 A1, May 21, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. H02K 15/10 (2006.01); H02K 3/28 (2006.01); B29C 45/14 (2006.01); H02K 1/16 (2006.01); H02K 9/197 (2006.01); B29C 45/17 (2006.01); B29C 45/00 (2006.01)
CPC H02K 15/105 (2013.01) [B29C 45/14 (2013.01); H02K 1/16 (2013.01); H02K 3/28 (2013.01); H02K 9/197 (2013.01); B29C 2045/0079 (2013.01); B29C 2045/1786 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for producing a stator for an electrical machine, the method comprising the steps of:
(a) providing the stator including a plurality of stator teeth arranged spaced apart from one another along a circumferential direction of a stator body and a ring-shaped stator body, from which the plurality of stator teeth for accommodating stator windings protrude, wherein a space is in each case embodied between two stator teeth adjacent to one another in the circumferential direction;
(b) first injection molding of at least two stator teeth adjacent to one another in the circumferential direction with a plastic;
(c) arranging at least one stator winding in the space; and
(d) second injection molding of the at least one stator winding arranged in the space with the plastic, such that an air gap and/or air trap formed between the stator teeth injection molded in step (b) and the at least one stator winding after arranging the at least one stator winding in the space according to step (c), is filled with the plastic,
wherein at least one phase insulation, which is arranged in the space and which divides the space into a radially inner and into a radially outer subspace, is embodied during the injection molding with the plastic, such that first conductor elements of the at least one stator winding, which embody a first phase winding, can be arranged in a radially inner subspace, and second conductor elements of the at least one stator winding, which embody a second phase winding, which is electrically insulated with respect to the first phase winding, can be arranged in the radially outer subspace.