CN202856580U

CN202856580U - Hub motor for electric vehicle

Info

Publication number: CN202856580U
Application number: CN2012205577242U
Authority: CN
Inventors: 李少亮; 赵德培
Original assignee: SHENGMENG (LUTAI) MOTOR MANUFACTURING Co Ltd
Current assignee: SHENGMENG (LUTAI) MOTOR MANUFACTURING Co Ltd
Priority date: 2012-10-29
Filing date: 2012-10-29
Publication date: 2013-04-03
Anticipated expiration: 2022-10-29

Abstract

The utility model relates to a hub motor for an electric vehicle, which comprises a stator core, a stator coil, an outer rotor and two end covers, wherein the stator core is provided with a center hole, and a plurality of tooth slots are arranged on the outer circumferential surface; the stator coil is formed by wires wound in the tooth slots; the outer rotor is a rear wheel hub of the electric vehicle, a plurality of permanent magnetic poles are installed on the inner circumferential surface, and the outer rotor is arranged outside the stator core; the two end covers are fixed on two side surfaces of the outer rotor; the ratio between the number of the permanent magnetic poles and the number of the tooth slots on the stator core is 30/27; and the slot pitch of the stator coil is 1. As the ratio between the number of the permanent magnetic poles and the number of the tooth slots on the stator core and the winding structure of the stator coil of the hub motor for the electric vehicle are designed reasonably, the hub motor provided by the utility model has the characteristics of small no-load current, small size, good sliding effect, high efficiency and the like compared with a generally used hub motor in the market, and enables continuous travelling distance of an electric vehicle using the motor provided by the utility model to increase by more than 20% than an electric vehicle using a common motor.

Description

A kind of hub for electric vehicle motor

Technical field

The utility model belongs to the vehicle technology field, particularly relates to a kind of hub for electric vehicle motor.

Background technology

Electric motor car has easy, practical characteristics as a kind of important vehicles, is therefore liked by ordinary consumer.The trailing wheel of electric motor car is for directly driving the wheel hub motor that car load moves ahead.The deficiencies such as the existing wheel hub motor ubiquity volume that uses is large on the market, mileages of continuation is short.Need for this reason to develop that a kind of high pulling torque, volume are little, high efficiency and the long wheel hub motor of mileages of continuation come the satisfying the market needs.

Summary of the invention

In order to address the above problem, the purpose of this utility model is to provide a kind of hub for electric vehicle motor that can satisfying the market needs.

In order to achieve the above object, the hub for electric vehicle motor that provides of the utility model comprises stator core, stator coil, external rotor and two end caps; Wherein the centre of stator core is formed with a centre bore that is used for being installed on the motor shaft, and its outer circumference surface is evenly distributed a plurality of teeth groove; Stator coil is to form by being wrapped in the multiple conducting wires in a plurality of teeth groove on the stator core, and power line causes outside the motor by the motor shaft wire hole; External rotor is the rear-wheel hub of electric motor car, and the multi-disc permanent magnet poles evenly is installed on the inner peripheral surface, and external rotor is placed in the stator core outside, has the gap between permanent magnet poles and stator core outer circumference surface; Two end caps are separately fixed on two sides of external rotor, and the centre is installed on the motor shaft by bearing; The ratio of the quantity of teeth groove is 30/27 on the sheet number of described permanent magnet poles and the stator core; The slot pitch of stator coil is 1, and winding mode is two groups of coil sides around the home in the same teeth groove of stator core, and wherein one group is the termination limit of a coil, and another group is the initial line that rises of another coil.

Because the permanent magnet poles number on the hub for electric vehicle motor that the utility model provides and the when stator coil winding reasonable in design of stator core teeth groove number, therefore compare with the wheel hub motor that generally uses on the market, it is little to have no-load current, volume is little, slide effective and the characteristics such as high efficiency, so that under normal circumstances, electric motor car uses the mileages of continuation of this motor to increase more than 20% than common electric machine.

Description of drawings

The hub for electric vehicle electric machine structure cutaway view that Fig. 1 provides for the utility model.

Stator core construction schematic diagram on the hub for electric vehicle motor that Fig. 2 provides for the utility model.

Outer-rotor structure cutaway view on the hub for electric vehicle motor that Fig. 3 provides for the utility model.

Embodiment

Below in conjunction with the drawings and specific embodiments the hub for electric vehicle motor that the utility model provides is elaborated.

As shown in Figure 1-Figure 3, the hub for electric vehicle motor that provides of the utility model comprises stator core 1, stator coil 2, external rotor 3 and two end caps 4; Wherein the centre of stator core 1 is formed with a centre bore 6 that is used for being installed on the motor shaft 5, and its outer circumference surface is evenly distributed a plurality of teeth groove 7; Stator coil 2 is to form by being wrapped in the multiple conducting wires in a plurality of teeth groove 7 on the stator core 1, and power line causes outside the motor by motor shaft 5 wire holes; External rotor 3 is the rear-wheel hub of electric motor car, and multi-disc permanent magnet poles 8 evenly is installed on the inner peripheral surface, and external rotor 3 is placed in stator core 1 outside, has the gap between permanent magnet poles 8 and stator core 1 outer circumference surface; Two end caps 4 are separately fixed on two sides of external rotor 3, and the centre is installed on the motor shaft 5 by bearing; The ratio of the quantity of teeth groove 7 is 30/27 on the sheet number of described permanent magnet poles 8 and the stator core 1; The slot pitch of stator coil 2 is 1, and winding mode is two groups of coil sides around the home in the same teeth groove 7 of stator core 1, and wherein one group is the termination limit of a coil, and another group is the initial line that rises of another coil.

The hub for electric vehicle machine operation principle that now the utility model is provided is described below: when Vehicular accumulator cell by controller to stator iron core 1 on stator coil 2 in the teeth groove 7 when passing into electric current, stator coil 2 will produce electromagnetic torque, permanent-magnetic field on this magnetic field and the external rotor 3 interacts and produces torque, so that external rotor 3 rotates, move ahead thereby directly drive electric motor car.

Claims

1. hub for electric vehicle motor, it comprises stator core (1), stator coil (2), external rotor (3) and two end caps (4); Wherein the centre of stator core (1) is formed with a centre bore (6) that is used for being installed on the motor shaft (5), and its outer circumference surface is evenly distributed a plurality of teeth groove (7); Stator coil (2) is to form by being wrapped in the multiple conducting wires in the upper a plurality of teeth groove (7) of stator core (1), and power line causes outside the motor by motor shaft (5) wire hole; External rotor (3) is the rear-wheel hub of electric motor car, multi-disc permanent magnet poles (8) evenly is installed on the inner peripheral surface, external rotor (3) is placed in stator core (1) outside, has the gap between permanent magnet poles (8) and stator core (1) outer circumference surface; Two end caps (4) are separately fixed on two sides of external rotor (3), and the centre is installed on the motor shaft (5) by bearing; It is characterized in that: the ratio of the quantity of the upper teeth groove (7) of the sheet number of described permanent magnet poles (8) and stator core (1) is 30/27; The slot pitch of stator coil (2) is 1, and winding mode is two groups of coil sides around the home in the same teeth groove (7) of stator core (1), and wherein one group is the termination limit of a coil, and another group is the initial line that rises of another coil.