STATOR COIL, METHOD FOR MANUFACTURING STATOR, AND ROTATING ELECTRICAL MACHINE
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Accused Products
Abstract
This rotating electrical machine includes a coil. The coil includes a first coil portion formed of a single-layer lap winding coil arranged on radially outer sides of slots, a second coil portion continuously connected to a first connecting wire portion continuously connected to the first coil portion, and formed of a single-layer lap winding coil arranged on radially inner sides of the slots, and a third coil portion group including a plurality of third coil portions each formed of a double-layer lap winding coil.
8 Citations
23 Claims
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1-10. -10. (canceled)
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11. A stator coil that is to be arranged in a stator core, the stator coil comprising:
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a first coil formed of a single-layer lap winding coil including a pair of first slot-housed portions to be respectively arranged on a radially outer side of a first slot and on a radially outer side of a second slot; a second coil continuously connected to an other-side end of a first connecting wire having a one-side end continuously connected to the first coil, and formed of a single-layer lap winding coil including a pair of second slot-housed portions, one of which is arranged on a radially inner side of the first slot and the other of which is arranged on a radially inner side of a third slot different from the first slot and the second slot; and a coil group including a plurality of third coils each formed of a double-layer lap winding coil, wherein a third slot-housed portion at a one-side end of the coil group in a circumferential direction is arranged on a radially inner side of the second slot, and a fourth slot-housed portion at an other-side end of the coil group in the circumferential direction is arranged on a radially outer side of the third slot. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A method for manufacturing a stator including a stator core having a first slot, a second slot, and a third slot that are different slots, the method comprising:
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arranging, in a state in which one of a first coil and a second coil is retreated to an outside of the stator core, the other of the first coil and the second coil in the stator core, the first coil being formed of a single-layer lap winding coil including a pair of first slot-housed portions to be respectively arranged on a radially outer side of the first slot and on a radially outer side of the second slot of the stator core, the second coil being continuously connected to an other-side end of a first connecting wire having a one-side end continuously connected to the first coil, and formed of a single-layer lap winding coil including a pair of second slot-housed portions, one of which is arranged on a radially inner side of the first slot and the other of which is arranged on a radially inner side of the third slot; subsequently arranging, on a radially inner side of the second slot, a third slot-housed portion at a one-side end of a coil group in a circumferential direction, the coil group including a plurality of third coils each formed of a double-layer lap winding coil, and arranging, on a radially outer side of the third slot, a fourth slot-housed portion at an other-side end of the coil group in the circumferential direction; and subsequently arranging, in the stator core, the one of the first coil and the second coil that is retreated to the outside of the stator core. - View Dependent Claims (20, 21, 22)
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23. A rotating electrical machine, comprising:
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a rotor core provided with a permanent magnet; a stator core arranged so as to face the rotor core in a radial direction, and having a first slot, a second slot, and a third slot that are different slots; and a coil arranged in the stator core, wherein the coil includes; a first coil formed of a single-layer lap winding coil including a pair of first slot-housed portions respectively arranged on a radially outer side of the first slot and on a radially outer side of the second slot; a second coil continuously connected to an other-side end of a first connecting wire having a one-side end continuously connected to the first coil, and formed of a single-layer lap winding coil including a pair of second slot-housed portions, one of which is arranged on a radially inner side of the first slot and the other of which is arranged on a radially inner side of the third slot; and a coil group including a plurality of third coils each formed of a double-layer lap winding coil, and a third slot-housed portion at a one-side end of the coil group in a circumferential direction is arranged on a radially inner side of the second slot, and a fourth slot-housed portion at an other-side end of the coil group in the circumferential direction is arranged on a radially outer side of the third slot.
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Specification