扁线电机和代步车

Abstract

本实用新型公开一种扁线电机和代步车，扁线电机包括定子铁芯和定子绕组，定子铁芯包括沿其周向间隔排布的多个定子齿，相邻两个定子齿之间限定出定子槽，定子槽为矩形槽，定子齿为扇形齿。定子绕组包括多组U形线和多组连接线，U形线的组数、连接线的组数和定子齿的数量相等，每组U形线包括沿定子铁芯的径向排布的多个U形线，每组U形线中的多个U形线套接单个定子齿，每组连接线包括沿定子铁芯的径向排布的多个连接线，每组U形线中的相邻两个U形线通过连接线连接，U形线插入相邻两个定子槽内的部分沿定子铁芯的径向错位布置。本实用新型提供的扁线电机具有结构紧凑、体积小、定子绕组在定子槽内填充紧密的优点。

Claims

1. A flat wire motor, characterized by, include: Stator core (1), the stator core (1) includes a plurality of stator teeth (12) arranged at intervals along its circumference, a stator slot (11) is defined between two adjacent stator teeth (12), the stator slot (11) is a rectangular slot, and the stator teeth (12) are fan-shaped teeth; The stator winding (2) includes multiple sets of U-shaped wires (21) and multiple sets of connecting wires (22). The number of sets of U-shaped wires (21), the number of sets of connecting wires (22), and the number of stator teeth (12) are equal. Each set of U-shaped wires (21) includes multiple U-shaped wires (21) arranged sequentially along the radial direction of the stator core (1). Multiple U-shaped wires (21) in each set of U-shaped wires (21) are connected to a single stator tooth (12). Each set of connecting wires (22) includes multiple connecting wires (22) arranged sequentially along the radial direction of the stator core (1). Two adjacent U-shaped wires (21) in each set of U-shaped wires (21) are connected by the connecting wires (22). The portion of the U-shaped wire (21) inserted into two adjacent stator slots (11) is arranged radially offset along the stator core (1).

2. The flat wire motor according to claim 1, characterized in that Multiple sets of the U-shaped wires (21) are arranged sequentially along the circumference of the stator core (1).

3. The flat wire motor of claim 2, wherein The U-shaped line (21) includes a first insertion segment (211), a first intermediate segment (212), and a second insertion segment (213) connected in sequence; The first insertion segment (211) and the second insertion segment (213) are respectively inserted into two adjacent stator slots (11). The first insertion segment (211) and the second insertion segment (213) are the same size. The first insertion segment (211) and the second insertion segment (213) in each U-shaped line (21) are radially misaligned by a distance greater than or equal to the maximum radial dimension of the first insertion segment (211) in the stator core (1).

4. The flat wire motor of claim 3, wherein The portion of the first insertion segment (211) located within the stator slot (11) has a rectangular cross-section with the same dimensions at any position in its extension direction.

5. The flat wire motor of claim 3, wherein The first insertion segment (211) and the second insertion segment (213) both extend along the axial direction of the stator core (1) and partially protrude from the side of the stator core (1) away from the first intermediate segment (212). The connecting line (22) is located on the side of the stator core (1) away from the first intermediate segment (212). In each group of U-shaped wires (21), the first insertion segment (211) in one U-shaped wire (21) and the second insertion segment (213) in the other U-shaped wire (21) are arranged circumferentially along the stator core (1) and the connecting wire (22) is welded to each other.

6. The flat wire motor of claim 5, wherein The outer contour of the connecting line (22) can be any one of a straight line, a V-shape, or a U-shape.

7. The flat wire motor of claim 5, wherein In the same group of U-shaped lines (21), a plurality of first insertion segments (211) protruding from the stator core (1) on the side opposite to the first intermediate segment (212) are arranged radially spaced along the stator core (1), and a plurality of second insertion segments (213) protruding from the stator core (1) on the side opposite to the first intermediate segment (212) are arranged radially spaced along the stator core (1); and / or, The flat wire motor also includes a partition (3), which is disposed on the side of the stator core (1) away from the first intermediate section (212). The partition (3) forms a plurality of limiting grooves for the connecting wires (22) to cooperate with. The partition (3) separates two adjacent connecting wires (22) arranged radially along the stator core (1).

8. A flat wire motor according to any of claims 3-7, characterized in that The stator winding (2) defines a U-phase winding, a V-phase winding and a W-phase winding, each of the U-phase winding, the V-phase winding and the W-phase winding including at least two split-phase windings (25) arranged circumferentially along the stator core (1), each of the split-phase windings (25) including at least two sets of the U-shaped wires (21) arranged adjacent to each other; The stator winding (2) further includes an interphase bridging line (23), and in at least two of the phase windings (25) of each of the U-phase winding, the V-phase winding and the W-phase winding, two adjacent phase windings (25) are connected by the interphase bridging line (23).

9. The flat wire motor of claim 8, wherein The phase-to-phase bridge line (23) is U-shaped and includes a third insertion section, a second intermediate section, and a fourth insertion section connected in sequence. The third and fourth insertion sections are arranged circumferentially along the stator core (1) and inserted into different stator slots (11). The third insertion section is connected to the first insertion section (211) via the connecting line (22), and the fourth insertion section is connected to the second insertion section (213) via the connecting line (22); and / or, Each of the phase windings (25) also includes an inter-tooth bridging line (24), and two adjacent sets of U-shaped lines (21) are connected by the inter-tooth bridging line (24).

10. The flat wire motor of claim 9, wherein The second intermediate section and the first intermediate section (212) are located on the same side of the stator core (1); Alternatively, the second intermediate section is located on the inner circumference side of the stator core (1); Alternatively, the second intermediate section is located on the outer periphery of the stator core (1).

11. The flat wire motor of claim 9, wherein The inter-tooth bridging line (24) is U-shaped and includes a fifth insertion section, a third intermediate section and a sixth insertion section connected in sequence. The fifth insertion section and the sixth insertion section are arranged along the circumference of the stator core (1) and are respectively inserted into two adjacent stator slots (11). One of the first insertion section (211) and the second insertion section (213) is located between the fifth insertion section and the sixth insertion section along the circumference of the stator core (1).

12. A scooter, characterized in that Including the flat wire motor according to any one of claims 1-10.

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