CN208021180U - A kind of hub motor for electric automobile - Google Patents

Abstract

The utility model discloses a wheel hub motor of an electric vehicle, which comprises an inner support frame, an outer support frame and a wheel frame. Both ends of the inner support frame are fixedly installed with side-wing frames, and the inner support frame and the outer support frame are connected through the side-wing frames. , the outer support frame is arranged inside the wheel frame, an encoder is fixedly installed inside the inner support frame, windings are fixedly installed on the side frame, and a magnetic steel is also fixedly installed between the winding and the outer support frame, so Bearings are installed on the side of the inner support frame through fastening bolts. Brakes are provided on both sides of the bearings. Wheel hubs are installed on the outer side of the magnetic steel through beams. Wheel rims are fixed on the inner sides of the hubs. Magnetic steel fixed connection, simple structure, high specific power, which is conducive to improving the stability and smoothness of electric vehicles when driving, simplifies the structure of the drive system, improves transmission efficiency, and facilitates the realization of wheel anti-lock braking system and steer-by-wire technology. Improve operational stability.

Description

A hub motor for an electric vehicle

technical field

The utility model relates to the technical field of electric vehicle engines, in particular to an electric vehicle hub motor.

Background technique

With the development of automobile technology, people's understanding of the driving force of automobiles is also improving, and now the early fuel engines are gradually inclined to electric engines. In the traditional driving mode, mechanical components such as clutches, transmissions, drive shafts, and differentials need to be used in conjunction. The structure of the entire transmission system is complex. Due to the complex transmission structure, the overall transmission efficiency in the transmission structure is very high. A large part of the waste is in internal friction, which reduces the transmission efficiency, and for the traditional drive structure, when controlling the power of the wheels, it needs to be comprehensively controlled by the engine, transmission, differential and wheel braking system. The process is complicated, and it is very easy to cause braking or control failure, causing serious safety hazards, and there are problems in coordination with the anti-lock braking system, and the transmission engine is driven by an oil circuit, which takes up The space is large, the maintenance cost is high, and the components of the whole vehicle need to be combined comprehensively, it is difficult to realize flexible configuration, the distribution of the vehicle on the axle load is unreasonable, and the stability of the vehicle's maneuverability is poor.

In order to overcome the defects of the above-mentioned traditional engines, the gradually developed in-wheel motors gradually overcome the above-mentioned difficulties. However, the existing in-wheel motors mainly adopt the deceleration drive type. Although this kind of motor overcomes the above-mentioned shortcomings, in order to meet the power requirements of the car, it needs to match the corresponding planetary gear reduction mechanism, and there are still complex structures. Problems, and the use of planetary gear drive will also lead to an increase in the unsprung mass of the car, which is not conducive to the smoothness and smoothness of the car, and the mechanical wear between them will also greatly reduce the transmission efficiency.

Utility model content

In order to overcome the deficiencies of the existing technical solutions, the utility model provides an electric vehicle hub motor, which has a simple structure, high specific power, reduces the unloaded mass, and is beneficial to improve the stability and smoothness of the electric vehicle when driving. The planetary gear reduction mechanism is adopted, which simplifies the structure of the drive system and improves the transmission efficiency. Compared with the reduction drive hub motor drive mode, it is easy to implement wheel anti-lock braking system and wire control steering technology, and improves the operation stability of electric vehicles. Effectively solve the problems in the background technology.

The technical solution adopted by the utility model to solve the technical problem is: an electric vehicle wheel hub motor, including an inner support frame, an outer support frame and a wheel frame. The frame and the outer support frame are connected through the side-wing frame. The outer support frame is installed inside the wheel frame. An encoder is fixedly installed inside the inner support frame, and windings are fixedly installed on the side-wing frame. The connection between the winding and the outer support frame A magnetic steel is also fixedly installed between them, bearings are installed on the side of the inner support frame through fastening bolts, brakes are provided on both sides of the bearing, and a hub is installed on the outer side of the magnetic steel through a beam, and the inner side of the hub is fixedly installed with The rim is fixedly connected with the magnetic steel through the rotating shaft.

As a preferred technical solution of the utility model, the support frame inside the side-wing frame is installed symmetrically, and the winding is fixedly installed on the side-wing frame to form a stator, and the winding is connected to the encoder through a conductive wire.

As a preferred technical solution of the utility model, the magnet steel is fixedly connected with the outer support frame to form a rotor, and the width of the magnet steel is slightly smaller than that of the winding.

As a preferred technical solution of the utility model, the contact relationship between the bearing and the brake is adjusted by fastening bolts, and a winding piece is fixedly installed on the contact surface between the fastening bolt and the bearing, and the winding piece is arc-shaped And it has the same shape as the bearing.

As a preferred technical solution of the present invention, the rotating shafts are distributed with the cross beam as the center of symmetry, and the rotating shafts are arranged outside the cross beam.

Compared with the prior art, the beneficial effects of the utility model are:

(1) Compared with the deceleration-driven hub motor, the planetary gear reduction mechanism is removed, and the external rotation structure with low speed and high torque characteristics equivalent to the speed range of the wheel is adopted. The rotor is externally placed and part of the structure such as the rim is directly installed on the The wheel hub drives the vehicle to run, with simple structure and high specific power, which effectively reduces the power waste caused by mechanical conduction in the process of rotation;

(2) The unsprung mass is reduced, and the transmission structure of the car is scattered and built inside the wheel frame of the car, while the shock absorbing spring of the car will only support the car body structure, which reduces the overall mass of the car and reduces the weight of the car. The position of the center of gravity of the operation is conducive to improving the stability and smoothness of the electric vehicle when driving;

(3) On the other hand, the planetary gear reduction mechanism is removed, the drive system structure is simplified, the transmission efficiency is improved, the direct bite wear of the gear plate is reduced, and the service life of the equipment is improved;

(4) Compared with the deceleration drive wheel hub motor drive mode, the brake system is externally placed on the wheel frame and directly connected to the bearing to hold it tightly, which is conducive to the deceleration and anti-lock control of the bearing by the anti-lock braking system. Conductive wires are used to transmit the operating speed model of the encoder to realize steering-by-wire. The overall coordinated structure is easy to realize wheel anti-lock braking system and steering-by-wire technology, which improves the operational stability of electric vehicles.

Description of drawings

Fig. 1 is the structural representation of the utility model;

In the figure: 1-inner support frame; 2-outer support frame; 3-wheel frame; 4-flank frame; 5-encoder; 6-winding; 7-magnetic steel; 8-fastening bolt; 9-bearing; 10 -brake; 11-beam; 12-hub; 13-rim; 14-rotating shaft; 15-stator; 16-conducting wire; 17-rotor;

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Example:

As shown in Figure 1, the utility model provides a hub motor for an electric vehicle, including an inner support frame 1, an outer support frame 2 and a wheel frame 3, and both ends of the inner support frame 1 are fixedly equipped with side wing frames 4, providing The supporting position, and plays the connection role of the internal structure, and the inner support frame 1 and the outer support frame 2 are connected through the side frame 4, the outer support frame 2 is set inside the wheel frame 3, and the driving mechanism is installed in the wheel in a dispersed manner , reduce the sprung mass, lower the center of gravity of the vehicle, the internal support frame 1 is fixedly installed with an encoder 5, and a winding 6 is fixedly installed on the side frame 4, and is also fixedly installed between the winding 6 and the outer support frame 2 There is a magnetic steel 7, bearings 9 are installed on the side of the inner support frame 1 through fastening bolts 8, and brakes 10 are provided on both sides of the bearing 9 to facilitate braking, and a wheel hub is installed on the outer side of the magnetic steel 7 through a beam 11 12. A rim 13 is fixedly installed on the inside of the hub 12, and the rim 13 is fixedly connected with the magnetic steel 7 through a rotating shaft 14.

Preferably, the support frame 1 inside the wing frame 4 is installed symmetrically, and the winding 6 is fixedly installed on the side frame 4 to form a stator 15, the winding 6 is connected to the encoder 5 through the conductive wire 16, and the winding 6 is connected to the encoder 5 through the conductive wire 16. The rotation speed and angle signals are transmitted to control the steering; the magnetic steel 7 is fixedly connected with the outer support frame 2 to form a rotor 17, and the width of the magnetic steel 7 is slightly smaller than the width of the winding 6, so as to prevent the magnetic steel 7 from touching the winding 6 during rotation form a rotation obstacle; the contact relationship between the bearing 9 and the brake 10 is adjusted by fastening bolts 8, and a winding piece 18 is fixedly installed on the contact surface between the fastening bolt 8 and the bearing 9, and the winding piece 18 is arc-shaped And it has the same shape as the bearing 9, which is used for automatic and easy coordination of the anti-lock braking system; the rotating shaft 14 is distributed with the beam 11 as the center of symmetry, and the rotating shaft 14 is arranged on the outside of the beam 11.

Main features of the utility model are:

(1) Compared with the deceleration-driven hub motor, the planetary gear reduction mechanism is removed, and the external rotation structure with low speed and high torque characteristics equivalent to the speed range of the wheel is adopted. The rotor is externally placed and part of the structure such as the rim is directly installed on the The wheel hub drives the vehicle to run, with simple structure and high specific power, which effectively reduces the power waste caused by mechanical conduction in the process of rotation;

(2) The unsprung mass is reduced, and the transmission structure of the car is scattered and built inside the wheel frame of the car, while the shock absorbing spring of the car will only support the car body structure, which reduces the overall mass of the car and reduces the weight of the car. The position of the center of gravity of the operation is conducive to improving the stability and smoothness of the electric vehicle when driving;

(3) On the other hand, the planetary gear reduction mechanism is removed, the drive system structure is simplified, the transmission efficiency is improved, the direct bite wear of the gear plate is reduced, and the service life of the equipment is improved;

(4) Compared with the deceleration drive wheel hub motor drive mode, the brake system is externally placed on the wheel frame and directly connected to the bearing to hold it tightly, which is conducive to the deceleration and anti-lock control of the bearing by the anti-lock braking system. Conductive wires are used to transmit the operating speed model of the encoder to realize steering-by-wire. The overall coordinated structure is easy to realize wheel anti-lock braking system and steering-by-wire technology, which improves the operational stability of electric vehicles.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to fall within the scope of the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (5)

1. a kind of hub motor for electric automobile, it is characterised in that：Including inner support frame (1), outer support frame (2) and wheel carrier (3), Inner support frame (1) both ends are installed with flank skeleton (4), and inner support frame (1) and outer support frame (2) pass through flank Skeleton (4) connects, and the outer support frame (2) is located at wheel carrier (3) inside, and volume is installed with inside the inner support frame (1) Code device (5), is installed with winding (6) on flank skeleton (4), also fixed between the winding (6) and outer support frame (2) Magnet steel (7) is installed, inner support frame (1) side is equipped with bearing (9), bearing (9) both sides by fastening bolt (8) It is equipped with brake (10), wheel hub (12) is equipped with by crossbeam (11) on the outside of magnet steel (7), wheel hub (12) inside is solid Dingan County is equipped with wheel rim (13), and the wheel rim (13) is fixedly connected by rotation axis (14) with magnet steel (7).

2. a kind of hub motor for electric automobile according to claim 1, it is characterised in that：Within the flank skeleton (4) Supporting rack (1) is symmetrically installed, and winding (6) is fixedly mounted on flank skeleton (4) and forms stator (15), and the winding (6) is logical Transporting electric wire (16) is crossed to connect with encoder (5).

3. a kind of hub motor for electric automobile according to claim 1, it is characterised in that：The magnet steel (7) and outer support Frame (2) is fixedly connected to form rotor (17), and the width of magnet steel (7) is slightly less than the width of winding (6).

4. a kind of hub motor for electric automobile according to claim 1, it is characterised in that：The bearing (9) and brake (10) contact relation is adjusted by fastening bolt (8) between, and also fixed in fastening bolt (8) and bearing (9) contact surface Be equipped with around pack (18), it is described around pack (18) in arcuation and identical as bearing (9) shape.

5. a kind of hub motor for electric automobile according to claim 1, it is characterised in that：The rotation axis (14) is with crossbeam (11) it is that symmetrical centre is distributed, and rotation axis (14) is located on the outside of crossbeam (11).