发明名称 Electric machine with stator's welded-side pitch less that rotor's pitch
摘要 The stator of the electric rotating machine includes a stator winding constituted of a plurality of U-shaped conductor segments each including a turn portion and two straight portions, the U-shaped conductor segments being connected in series by welding at welded portions formed in ends of the straight portions, and a stator core formed with slots, the straight portions of each U-shaped conductor segment being accommodated in corresponding two of the slots. The welded side slot pitch as an interval of the corresponding two of the slots on the side opposite to the turn portions is narrower than the N-S magnetic pole pitch of the rotor. The stator winding includes overlapped wire wrapping sections each constituted of the U-shaped conductor segments accommodated in the corresponding two of the slots, and crossover wires disposed on the side of the welded portions for connecting the overlapped wire wrapping sections.
申请公布号 US9479020(B2) 申请公布日期 2016.10.25
申请号 US201113338603 申请日期 2011.12.28
申请人 DENSO CORPORATION 发明人 Hisada Tomokazu
分类号 H02K3/28;H02K15/00 主分类号 H02K3/28
代理机构 Nixon & Vanderhye P.C. 代理人 Nixon & Vanderhye P.C.
主权项 1. An electric rotating machine comprising: a stator including a stator winding constituted of a plurality of U-shaped conductor segments each including a turn portion and two straight portions, the U-shaped conductor segments being connected in series by welding at welded portions formed in ends of the straight portions, and a stator core formed with slots, the straight portions of each U-shaped conductor segment being accommodated in corresponding two of the slots; and a rotor, wherein a welded side slot pitch is the interval along the circumferential direction between two straight portions of each conductor segment on a welded side, and the welded side slot pitch is narrower than an N-S magnetic pole pitch of the rotor, and the stator winding includes overlapped wire wrapping sections each constituted of the U-shaped conductor segments accommodated in the corresponding two of the slots, and crossover wires disposed on the side of the welded portions for connecting the overlapped wire wrapping sections, wherein the crossover wires include first crossover wires for connecting the ends of the U-shaped conductor segments disposed on an innermost side of the stator core, and second crossover wires for connecting the ends of the U-shaped conductor segments disposed on an outermost side of the stator core.
地址 Kariya JP