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US 12,519,358 B2Granted
Coil element for an electrical machine
AssigneeZF Friedrichshafen AG
InventorsStefan Reuter, Ralf Wittstadt
Life of this patent
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Abstract
A coil element for a coil of an electric machine having at least two conductor elements extending parallel for arrangement in slots of a coil body and at least one connection portion that connects the two conductor elements to one another. The conductor elements and the connection portion are integrally formed. A bending position in a plane defined by the two conductor elements is provided only at a transition from a conductor element to the connection portion, and the connection portion extends in a straight line.
Claims13
A coil element for a coil of an electric machine comprising:
- at least two conductor elements extending in parallel arranged in slots of a coil body;
- one connection portion configured to connect two respective conductor elements to one another,
- wherein the at least two conductor elements and the one connection portion are integrally formed;
- and
- a bending position arranged in a first plane and defined by the two conductor elements and is provided only at a transition from a respective conductor element to the one connection portion, wherein the one connection portion extends in a straight line, wherein a plurality of phases and a number of holes q of at least three are provided, in that the wave winding has a standard winding step WS of WS=q×m, where q corresponds to the number of holes and m corresponds to the quantity of phases, in that at least a quantity of coil strands corresponding to the number of holes q is provided connected in parallel, wherein the coil strands comprise at least one coil element with at least one turn region W, wherein the turn region W comprises the one connection portion and adjacent transitions, wherein two different variants of coil elements are provided, in a first variant of the coil elements, the turn region W has a shortened winding step WK between the conductor elements, and in a second variant of the coil elements, the turn region W has a lengthened winding step WL.
2 more elements
A coil element for a coil of an electric machine comprising:
- at least two conductor elements extending in parallel arranged in slots of a coil body;
- one connection portion configured to connect two respective conductor elements to one another,
- wherein the at least two conductor elements and the one connection portion are integrally formed;
- and
- a bending position arranged in a first plane and defined by the two conductor elements and is provided only at a transition from a respective conductor element to the one connection portion,
- wherein two further bending positions in a second plane extending perpendicular to the first plane defined by the conductor elements are comprised at the one connection portion, and the further bending positions are bent in opposite directions,
- wherein a plurality of phases and a number of holes q of at least three are provided, in that the wave winding has a standard winding step WS of WS=q×m, where q corresponds to the number of holes and m corresponds to the quantity of phases, in that at least a quantity of coil strands corresponding to the number of holes q is provided connected in parallel, wherein the coil strands comprise at least one coil element with at least one turn region W, wherein the turn region W comprises the one connection portion and adjacent transitions, wherein two different variants of coil elements are provided, in a first variant of the coil elements, the turn region W has a shortened winding step WK between the conductor elements, and in a second variant of the coil elements, the turn region W has a lengthened winding step WL.
4 more elements
A wave winding for an electric machine with at least one coil element comprising:
- at least two conductor elements extending in parallel arranged in slots of a coil body;
- one connection portion configured to connect two respective conductor elements to one another,
- wherein the at least two conductor elements and the one connection portion are integrally formed;
- a bending position arranged in a first plane and defined by the two conductor elements and is provided only at a transition from a respective conductor element to the one connection portion, wherein the one connection portion extends in a straight line,
- wherein a plurality of phases and a number of holes q of at least three are provided, in that the wave winding has a standard winding step WS of WS=q×m, where q corresponds to the number of holes and m corresponds to the quantity of phases, in that at least a quantity of coil strands corresponding to the number of holes q is provided connected in parallel, wherein the coil strands comprise at least one coil element with at least one turn region W, wherein the turn region W comprises the one connection portion and adjacent transitions, wherein two different variants of coil elements are provided, in a first variant of the coil elements, the turn region W has a shortened winding step WK between the conductor elements, and in a second variant of the coil elements, the turn region W has a lengthened winding step WL.
2 more elements
A stator for an electric machine, wherein the stator is provided with a wave winding comprising:
- at least two conductor elements extending in parallel arranged in slots of a coil body;
- one connection portion configured to connect two respective conductor elements to one another,
- wherein the at least two conductor elements and the one connection portion are integrally formed;
- and
- a bending position arranged in a first plane and defined by the two conductor elements and is provided only at a transition from a respective conductor element to the one connection portion, wherein the one connection portion extends in a straight line,
- wherein a plurality of phases and a number of holes q of at least three are provided, in that the wave winding has a standard winding step WS of WS=q×m, where q corresponds to the number of holes and m corresponds to the quantity of phases, in that at least a quantity of coil strands corresponding to the number of holes q is provided connected in parallel, wherein the coil strands comprise at least one coil element with at least one turn region W, wherein the turn region W comprises the one connection portion and adjacent transitions, wherein two different variants of coil elements are provided, in a first variant of the coil elements, the turn region W has a shortened winding step WK between the conductor elements, and in a second variant of the coil elements, the turn region W has a lengthened winding step WL.
3 more elements
A rotor for an electric machine, wherein the rotor is provided with a wave winding comprising:
- at least two conductor elements extending in parallel arranged in slots of a coil body;
- one connection portion configured to connect two respective conductor elements to one another,
- wherein the at least two conductor elements and the one connection portion are integrally formed;
- and
- a bending position arranged in a first plane and defined by the two conductor elements and is provided only at a transition from a respective conductor element to the one connection portion, wherein the one connection portion extends in a straight line,
- wherein a plurality of phases and a number of holes q of at least three are provided, in that the wave winding has a standard winding step WS of WS=q×m, where q corresponds to the number of holes and m corresponds to the quantity of phases, in that at least a quantity of coil strands corresponding to the number of holes q is provided connected in parallel, wherein the coil strands comprise at least one coil element with at least one turn region W, wherein the turn region W comprises the one connection portion and adjacent transitions, wherein two different variants of coil elements are provided, in a first variant of the coil elements, the turn region W has a shortened winding step WK between the conductor elements, and in a second variant of the coil elements, the turn region W has a lengthened winding step WL.
3 more elements
An electric machine, wherein at least one wave winding comprising:
- at least two conductor elements extending in parallel arranged in slots of a coil body;
- one connection portion configured to connect two respective conductor elements to one another,
- wherein the at least two conductor elements and the one connection portion are integrally formed;
- and
- a bending position arranged in a first plane and defined by the two conductor elements and is provided only at a transition from a respective conductor element to the one connection portion, wherein the one connection portion extends in a straight line,
- wherein a plurality of phases and a number of holes q of at least three are provided, in that the wave winding has a standard winding step WS of WS=q×m, where q corresponds to the number of holes and m corresponds to the quantity of phases, in that at least a quantity of coil strands corresponding to the number of holes q is provided connected in parallel, wherein the coil strands comprise at least one coil element with at least one turn region W, wherein the turn region W comprises the one connection portion and adjacent transitions, wherein two different variants of coil elements are provided, in a first variant of the coil elements, the turn region W has a shortened winding step WK between the conductor elements, and in a second variant of the coil elements, the turn region W has a lengthened winding step WL.
3 more elements
Dependencies are inferred from the claim text.