Patent ID: 11863035
Assignee: MIBA EMOBILITY GMBH
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A stator (1) for an electric machine, comprising:
an essentially hollow-cylindrical laminated core (2) having a first and a second axial front end (13a, 13b) and having multiple receiving grooves (4) arranged distributed along a circumferential direction (10) of the laminated core (2) and extending along a longitudinal axis (3) of the laminated core (2),
multiple electric conductor sections (La, Lb) per receiving groove (4) formed by forming rods, which conductor sections (La, Lb) form a stator winding (14) by predetermined electric connections, which stator winding (14) has multiple immediately-adjacent layers (L) of conductor sections (La, Lb) in a radial direction to the longitudinal axis (3) of the laminated core (2),
wherein the stator winding (14) comprises at least two electric part-windings (TWa, TWb, TWc, TWd) per phase winding (PW), which part-windings (TWa, TWb, TWc, TWd) are formed by multiple serially-connected conductor sections (La, Lb), wherein first and second electric connecting sections (VBa, VBb) between electrically serially-connected conductor sections (La, Lb) are allocated to the first and to the second axial front end (13a, 13b) of the laminated core (2), and wherein two serially-connected conductor sections (La, Lb) define a pair of forming rods (16),
wherein the at least two electric part-windings (TWa, TWb, TWc, TWd) are respectively formed at least by one first and one second electrically series-connected winding segment (WSa, WSb),
wherein conductor sections (La, Lb) of the first winding segment (WSa) are electrically interconnected by means of the first and second electric connecting sections (VBa, VBb) such that a helical current path (17a) is defined along a first radial direction (18a) to the longitudinal axis (3) of the laminated core (2) and conductor sections (La, Lb) of the second winding segment (WSb) are electrically interconnected by means of the first and second electric connecting sections (VBa, VBb) such that a second helical current path (17b) is defined along an opposite, second radial direction (18b) to the longitudinal axis (3) of the laminated core (2),
wherein the current path (17a) defined by the first winding segment (WSa) either (i), starting from the radially-innermost layer (L1) of conductor sections (La, Lb), leads to the radially-outermost layer (L8) of conductor sections (La, Lb), or vice versa (ii), starting from the radially-outermost layer (L8) of conductor sections (La, Lb), leads to the radially-innermost layer (L1) of conductor sections (La, Lb), is subsequently guided, without an offset in the layer (L), by means of a third electric connecting section (VBc) to the second winding segment (WSb), and
wherein the current path (17b) in the second winding segment (WSb) either (i), starting from the radially-outermost layer (L8) of conductor sections (La, Lb), is guided to the radially-innermost layer (L1) of conductor sections (La, Lb), or vice versa (ii), starting from the radially-innermost layer (L1) of conductor sections (La, Lb), is guided to the radially-outermost layer (L8) of conductor sections (La, Lb).