Winding arrangement for an electric machine

• US 6,958,560 B2
• Filed: 02/15/2002
• Issued: 10/25/2005
• Est. Priority Date: 03/09/2001
• Status: Expired due to Fees

• Current Assignee: Continental Isad Electronics Systems GmbH & Co. OhG (Continental AG)
• Original Assignee: Temic Automotive Electric Motors Gmbh (Continental AG)
• Inventors: Masberg, Ulrich, Gründl, Andreas, Hoffmann, Bernhard, Menhart, Michael, Rasch, Reinhard, Holzheu, Georg
• Primary Examiner(s): Lam, Thanh
• Application Number:
  US10/471,507
• Publication Number:
  US 20040135457A1
• Time in Patent Office: 1,348 Days
• Field of Search: 310/71, 310179-184, 310/201, 310/206, 310/208
• US Class Current: 310/179
• CPC Class Codes: H02K 15/064 Windings consisting of separate segments, e.g. hairpin windings H02K15/063 takes precedence
• CPC Class Codes: H02K 2203/09 Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
• CPC Class Codes: H02K 3/12 arranged in slots
• CPC Class Codes: H02K 3/28 Layout of windings or of connections between windings windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32
• CPC Class Codes: H02K 3/50 Fastening of winding heads, equalising connectors, or connections thereto
• CPC Class Codes: Y10T 29/49009 Dynamoelectric machine
• CPC Class Codes: Y10T 29/49073 by assembling coil and core

Abstract

The invention relates to a winding arrangement for an electric machine with a polyphase winding, in which a plurality of coils or coil groups connected in parallel (50, 52, 54, 56) are connected with a conductor rail (40, 42, 44, 46). This makes it possible to connect the coil ends directly and without connecting pieces with the electric power supply. The conductor rails (40, 42, 44, 46) are preferably arranged at one or both face sides of the post of the electric machine below the slot openings, i.e., in the area of the back of the post.

Furthermore, the invention is aimed at an corresponding manufacturing method for a winding arrangement of a polyphase winding for an electric machine, in which the coils or coil groups connected in parallel (50, 52, 54, 56) of the winding are connected with one of the conductor rails (40, 42, 44, 46).

Claims

1. A winding arrangement for a stator of an electric machine with a polyphase winding having a plurality of phase branches, comprising:

coils or coil groups, and

conductor rails with at least one terminal,

in which each phase branch comprises a plurality of coils or coil groups connected in parallel;

in which the conductor rails are located at least partially around the stator; and

in which at least one end of the coils or coil groups connected in parallel is connected with one of the conductor rails in such a way that said conductor rail forms a current conductor connecting the terminal with the parallel-connected coils or coil groups of a phase branch.

2. The winding arrangement of claim 1, in which the electric machine presents a stator with slots creating lateral slot openings in the stator and having a slot depth, and in which the conductor rails are placed at one or both face sides of the stator in the direction of the slot depth below the slot openings.

3. The winding arrangement of claim 1, in which a plurality of conductor rails is arranged next to one another and connected with a conductor rail set.

4. The winding arrangement of claim 1, in which at least one conductor rail is composed of individual ring sectors.

5. The winding arrangement of claim 1, in which the winding is composed of structural parts.

6. The winding arrangement of claim 5, in which the conductor rails are directly connected with structural parts of the coils.

7. The winding arrangement of claim 2, in which the ends of the coils or coil groups connected with the conductor rails are all arranged in the direction of the slot depth and at the same side of the slot opening as the conductor rails.

8. The winding arrangement of claim 2, in which the slots run in a lateral direction, and a plurality or all of the conductor rails is/are layered next to each other in the lateral direction of the slots.

9. The winding arrangement of claim 8, in which at least one conductor rail comprises elevations connecting the coil ends on the side facing the slot openings.

10. The winding arrangement of claim 2, in which a plurality or all of the conductor rails is/are layered on top of one another in the direction of the slot depth.

11. The winding arrangement of claim 8, in which a star point rail presents links extending across the conductor rails and connecting coil ends.

12. The winding arrangement of claim 10 having a star point rail, and in which the star point rail presents links extending across the conductor rails and connected with coil ends.

13. The winding arrangement of claim 1, in which at least two coils are connected in series, and the serial connection is created with connections between the coils connected in series, and in which at least some connection create sectors which are insulated from each other.

14. The winding arrangement of claim 1, in which

the electric machine presents a stator with face sides and slots;

the winding presents several overlapping coils comprising of the slot bars located in the slots and connector lines located at the face sides of the stator; and

the connector lines are flatter than the slot bars and the connector lines of overlapping coils are staggered and therefore layered.