Delta Electronics, Inc.

Yao-Hsien Shao

Yu-Wei Chuang

Ji Dai

Yi-Ming Wu

Yu-Kuan Lin

Tzu-Ting Hsu

Yen-Wei Tseng

A hairpin stator includes a core, slot-positions and hairpin wires. The core includes a first side and a second side. The slot-positions are configured on the core circumferentially to form M radially-adjacent slot-position layers, wherein M is an odd number greater than or equal to 5. The hairpin wires are configured in the slot-positions and connected to form a plurality of windings. The hairpin wires include a plurality of first U-shaped wires arranged at an outermost slot-position layer in the radial direction and a plurality of second U-shaped wires arranged at an innermost slot-position layer in the radial direction. Each first U-shaped wire includes a U-shaped section arranged at the outermost slot-position layer and protruding from the first side of the core. Each second U-shaped wire includes a U-shaped section arranged at the innermost slot-position layer and protruding from the second side of the core.

Hairpin wire motor stator

A hairpin stator includes an iron core, a plurality of slot-positions and a plurality of hairpin wires. The slot-positions are located in the circumferential direction of the iron core, and form a plurality of adjacent slot-position layers in the radial direction. The iron core includes polar regions, each polar region includes phases, and each phase includes phase slots. The hairpin wires are arranged in the slot-positions of the phase slots of the same phases of the polar regions, and the hairpin wires are connected to form windings. The hairpin wires include transpolar hairpin wires. A span of the transpolar hairpin wires on an insertion side of the iron core is equal to a quotient, which is obtained by dividing a total number of the phase slots by a total number of the polar regions, plus 1 or minus 1.

A hairpin motor stator includes a stator core, a plurality of slots, a first hairpin wire and a temperature sensor. The stator core defines a rotor accommodating space. The slots are located on the stator core, and each slot extends in a radial direction from the rotor accommodating space. Each slot has a side opening adjacent to the rotor accommodating space. One of the slots is a temperature sensor accommodating slot. The first hairpin wire is located in the temperature sensor accommodating slot and proximal to the side opening of the temperature sensor accommodating slot. The temperature sensor is between the side opening of the temperature sensor accommodating slot and the first hairpin wire. The temperature sensor is larger than the side opening of the temperature sensor accommodating slot such that the temperature sensor is enclosed in the temperature sensor accommodating slot.

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Taoyuan, Taiwan

Yao-Hsien Shao