Electric vehicle brake generator

Abstract

The invention discloses an electric vehicle brake generator, which comprises a stator and a rotor embedded in a brake hub, wherein the inner end of the rotor is provided with an inner ring gear, the inner end of the stator is provided with an outer ring gear, an annular frame is arranged at the inner ends of the stator and the rotor, 3-6 planetary gears meshing with the inner ring gear and the outer ring gear are installed on the outer side of the annular frame, a brake ring is arranged on the outer edge of the annular frame, two brake sub-cylinders connected to the brake oil pipe and fixedly mounted on the shaft seat are arranged inside the brake ring, each brake sub-cylinder comprises two brake piston rods and a brush piston rod, the brake shoe is connected to the brake piston rod, and the brush piston rod is connected to the brush corresponding to the collector ring at the inner end of the stator. It has a reasonable structure, stable performance, and can effectively recover braking energy.

Description

Technical Field

[0001] The invention belongs to the technical field of electric vehicle manufacturing, and in particular relates to a brake generator for an electric vehicle. Background Art

[0002] Since the beginning of the 21st century, energy and environment have had an increasingly greater impact on human life and social development. Energy conservation and emission reduction technologies for transportation vehicles have become increasingly prominent, and vehicle energy recovery technology has received full attention. Braking energy recovery systems have been widely used in electric and hybrid vehicles.

[0003] The basic principle of braking energy recovery for vehicles with braking energy recovery systems is: using the motor to generate electricity during braking, and storing the electricity in the power battery to achieve braking energy recovery. At present, the structure of the braking energy recovery system is unreasonable, and the effectiveness of energy recovery is insufficient. Summary of the invention

[0004] The purpose of the present invention is to provide a novel electric vehicle brake generator, which has a reasonable structure, stable performance and can effectively recover braking energy.

[0005] The object of the present invention is achieved as follows: an electric vehicle brake generator, which includes an axle frame composed of an axle seat and an axle sleeve, an axle is installed in the axle sleeve, a brake disc composed of a brake hub and a brake pad is fixedly installed on the outer end of the axle, a brake caliper is arranged on the brake pad, and the brake caliper is connected to the brake oil pipe, characterized in that: it includes a stator embedded in the brake hub and fixedly connected to the brake hub, a rotor is arranged on the outer ring of the stator, an inner end of the rotor is provided with inner ring teeth, an inner end of the stator is provided with outer ring teeth corresponding to the inner ring teeth, a collector ring is arranged on the inner end of the stator, an annular frame is arranged on the inner side of the stator and the rotor, and the outer end of the annular frame is provided with an annular distribution. 3-6 planetary gears meshing with both the inner ring teeth and the outer ring teeth, a brake ring protruding inward is provided on the outer edge of the annular frame, two brake cylinders fixedly mounted on the axle seat and connected to the brake oil pipe, two brake shoes and two return springs connecting the ends of the two brake shoes are arranged inside the brake ring, each brake cylinder includes two brake piston rods and a brush piston rod, one end of the two brake shoes are respectively connected to the two brake piston rods of one brake cylinder, the other ends of the two brake shoes are respectively connected to the two brake piston rods of the other brake cylinder, and brushes corresponding to the two poles of the collector ring are respectively installed on the brush piston rods of the two brake cylinders.

[0006] Preferably, 3 to 6 support bearings supported on the inner ring of the rotor are installed in an annular distribution at the outer end of the stator.

[0007] Preferably, the brush is mounted on the outer side of the shaft seat via an elastic plate, and the top end of the brush piston rod is connected to the elastic plate via a compression spring radial support.

[0008] Preferably, the axle is mounted in the sleeve via an inner bearing and an outer bearing.

[0009] Working principle of the present invention:

[0010] (1) The wheel axle, brake hub, brake pad and stator are fixedly connected together as a whole, and are driven to rotate by the wheel axle when the car is moving;

[0011] (2) The rotor is an integral part of the stator. It is mounted on the outer ring of the stator and rotates with the rotor when the vehicle is running.

[0012] (3) The ring frame, brake ring and planetary gear are an integral whole, and it rotates with the rotor when the car is running;

[0013] (4) The shaft seat, shaft sleeve, two brake cylinders, two brake shoes, two brushes, brake calipers and brake oil pipes are a whole, and it is a non-rotating part;

[0014] (5) When the brake pedal is not pressed: the car moves forward normally, the rotor, annular frame, brake ring and planetary gear rotate synchronously with the stator and wheels, and no power is generated;

[0015] (6) When the brake pedal is lightly pressed, the brake oil pipe generates medium-pressure oil, the brake cylinder starts to work after the medium-pressure oil is injected, the brake piston rod extends to push the brake shoe to press against the brake ring, and the ring frame and the planetary gear stop rotating; at the same time, the brush piston rod extends, so that the positive and negative brushes are pressed against the collector ring; at this time, the stator is still rotating, the planetary gear starts to rotate, and the rotor starts to reverse under the drive of the planetary gear. The stator rotates forward and the rotor reverses, generating current to charge the battery; in the process of power generation, the Ampere force has a braking effect to prevent the stator and wheels from rotating;

[0016] (7) When the brake pedal is stepped on hard: the brake oil pipe generates high-pressure oil. The high-pressure oil causes the brake cylinder to work and generate electricity, while also starting the brake caliper to work, which can achieve emergency braking.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] (1) The present invention can be installed on all four wheels of a car and has a compact structure. It does not require any additional auxiliary components and is easy to prepare and install.

[0019] (2) In the present invention, when the brake pedal is lightly pressed, the generator starts to generate electricity and light braking is achieved through the generator Ampere force. When the brake pedal is heavily pressed, the generator Ampere force and the brake caliper act simultaneously to achieve emergency braking.

[0020] (3) The present invention connects the rotor and the stator through a planetary gear transmission. The rotor and the stator rotate in opposite directions, the relative speed is doubled, the power generation efficiency is high, and the energy recovery rate is high.

[0021] (4) The overall design of the present invention is scientific and reasonable, the operation is stable and noiseless, and it is suitable for use in electric vehicles or hybrid vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the electric vehicle brake generator of the present invention from an outer perspective;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the electric vehicle brake generator from the inner side of the present invention;

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the electric vehicle brake generator of the present invention in an exploded state from an outer perspective;

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the electric vehicle brake generator of the present invention in an exploded state from the inner side perspective;

[0026] Figure 5 It is a three-dimensional structural schematic diagram of the brake cylinder, brake shoe and brush part of the present invention;

[0027] Figure 6 This Figure 5 A-section structure enlarged view.

[0028] In the figure: 1-axle seat, 2-axle sleeve, 3-wheel axle, 4-brake hub, 5-brake pad, 6-brake caliper, 7-brake oil pipe, 8-stator, 9-rotor, 10-inner ring gear, 11-outer ring gear, 12-collector ring, 13-annular frame, 14-planetary gear, 15-brake ring, 16-brake cylinder, 17-brake shoe, 18-return spring, 19-brake piston rod, 20-brush piston rod, 21-brush, 22-support bearing, 23-elastic plate, 24-compression spring, 25-inner bearing, 26-outer bearing. DETAILED DESCRIPTION

[0029] The embodiments of the technical solution of the present invention are described in detail below with reference to the accompanying drawings.

[0030] Example: Figures 1 to 6As shown, an electric vehicle brake generator comprises an axle frame consisting of an axle seat 1 and a shaft sleeve 2, a wheel axle 3 is installed in the shaft sleeve 2 through an inner bearing 25 and an outer bearing 26, a brake disc consisting of a brake hub 4 and a brake pad 5 is fixedly installed at the outer end of the wheel axle 3, a brake caliper 6 is arranged on the brake pad 5, the brake caliper 6 is connected to a brake oil pipe 7, it comprises a stator 8 embedded in the brake hub 4 and fixedly connected to the brake hub 4, a rotor 9 is arranged on the outer ring of the stator 8, an inner ring tooth 10 is arranged at the inner side end of the rotor 9, an outer ring tooth 11 corresponding to the inner ring tooth 10 is arranged at the inner side end of the stator 8, a collector ring 12 is arranged at the inner side of the stator 8, an annular frame 13 is arranged on the inner side of the stator 8 and the rotor 9, and 5 outer ring teeth 10 are arranged in a circular distribution at the outer end of the annular frame 13. The outer ring gear 11 is meshed with the planetary gear 14, and the outer edge of the annular frame 13 is provided with a brake ring 15 protruding inward. The brake ring 15 is provided with two brake cylinders 16, two brake shoes 17 and two return tension springs 18 connecting the ends of the two brake shoes 17 fixedly installed on the shaft seat 1. Each brake cylinder 16 includes two brake piston rods 19 and a brush piston rod 20. One end of the two brake shoes 17 is connected to the two brake piston rods 19 of one brake cylinder 16, and the other end of the two brake shoes 17 is connected to the two brake piston rods 19 of the other brake cylinder 16. Brushes 21 corresponding to the two poles of the collector ring 12 are respectively installed on the brush piston rods 20 of the two brake cylinders 16. Five support bearings 22 supported on the inner ring of the rotor 9 are annularly distributed and installed on the outer end of the stator 8. The brush 21 is installed on the outer side of the shaft seat 1 through an elastic plate 23, and the top of the brush piston rod 20 is radially supported and connected to the elastic plate 23 through a compression spring 24.

[0031] Finally, it should be noted that: in order to facilitate the description of the present invention and simplify the description, the inside and outside mentioned in this specification and claims refer to the center of the car as the inside, and the left or right side of the car is called the outside, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and should all be included in the scope of the claims and specification of the present invention.

Claims

1. An electric vehicle brake generator, comprising an axle frame consisting of an axle seat and a sleeve, a wheel axle is installed in the sleeve, a brake disc consisting of a brake hub and a brake pad is fixedly installed on the outer end of the wheel axle, a brake caliper is arranged on the brake pad, and the brake caliper is connected to a brake oil pipe, characterized in that: It includes a stator embedded in a brake hub and fixedly connected to the brake hub, a rotor is arranged on the outer ring of the stator, an inner end of the rotor is provided with inner ring teeth, an inner end of the stator is provided with outer ring teeth corresponding to the inner ring teeth, a collector ring is arranged on the inner end of the stator, an annular frame is arranged on the inner side of the stator and the rotor, 3-6 planetary gears meshing with the inner ring teeth and the outer ring teeth are installed in a circular distribution on the outer end of the annular frame, a brake ring protruding inward is provided on the outer edge of the annular frame, two brake sub-cylinders fixedly installed on the shaft seat and connected to the brake oil pipe, two brake shoes and two return tension springs connecting the ends of the two brake shoes are arranged inside the brake ring, each brake sub-cylinder includes two brake piston rods and a brush piston rod, one end of the two brake shoes is respectively connected to the two brake piston rods of one brake sub-cylinder, and the other end of the two brake shoes is respectively connected to the two brake piston rods of another brake sub-cylinder, and brushes corresponding to the two poles of the collector ring are respectively installed on the brush piston rods of the two brake sub-cylinders.

2. The electric vehicle brake generator according to claim 1, characterized in that: 3 to 6 support bearings supported on the inner ring of the rotor are installed in a circular distribution on the outer end of the stator.

3. The electric vehicle brake generator according to claim 2, characterized in that: The brush is installed on the outer side of the shaft seat through an elastic plate, and the top end of the brush piston rod is connected to the elastic plate through radial support of a compression spring.

4. The electric vehicle brake generator according to claim 1, 2 or 3, characterized in that: The wheel axle is mounted in the sleeve via the inner bearing and the outer bearing.

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