CN221227300U - Power generation device and body-building equipment - Google Patents

Abstract

The present disclosure relates to a power generation device and exercise equipment, the power generation device comprising: a motor and a rectifier; the motor includes: the rotor and the stator are coaxially distributed, and the rotor is used for rotating along the axis of the rotor under the action of rotating mechanical energy and generating a rotating magnetic field; the stator cuts magnetic lines in a direction perpendicular to the magnetic lines of the magnetic field and generates alternating current. The stator is connected with the input end of the rectifier, and the output end of the rectifier is used for being connected with a load; the rectifier is used for converting alternating current into direct current and outputting the direct current to a load through an output terminal. The power generation device can be used for converting mechanical energy into electric energy, and mechanical energy generated by body-building equipment can be fully utilized, so that the device is economical and environment-friendly.

Description

Power generation device and body-building equipment

Technical Field

The present disclosure relates to the field of electronics, and in particular, to a power generation device and fitness equipment.

Background

Taking an exercise bicycle as an example, an exercise person performs exercise by stepping on pedals of the exercise bicycle, work of the exercise person is generally consumed by heat energy generated by eddy current loss of magnetic control wheels, and the magnetic control wheels need electric energy for driving. Not only the magnetic control wheel needs electric energy to drive, but also the Bluetooth function and the controller of the exercise bicycle need electric energy, and the electric energy is provided by a battery. The excessive power consumption electronic devices require more electricity, and the battery has limited electricity storage capacity, so that the battery needs to be replaced frequently or charged frequently, and the use experience of a user is reduced.

Disclosure of utility model

The present disclosure provides a power generation device and fitness equipment.

According to a first aspect of embodiments of the present disclosure, there is provided a power generation device including: a motor and a rectifier;

The motor includes: a rotor and a stator coaxially distributed, said rotor being adapted to rotate along the axis of said rotor (02) under the effect of rotational mechanical energy and to generate a rotating magnetic field; the stator cuts the magnetic force lines in the direction perpendicular to the magnetic force lines of the magnetic field and generates alternating current;

The stator is connected with the input end of the rectifier, and the output end of the rectifier is used for being connected with a load;

the rectifier is used for converting the alternating current into direct current and outputting the direct current to the load through the output end.

According to some alternative embodiments, the rotor comprises a rotor support and a magnet, the magnet being connected to the rotor support; the rotor support is used for receiving the mechanical energy; and/or the number of the groups of groups,

The stator comprises a stator support and a coil winding, wherein the coil winding is connected to the stator support, and the coil winding is connected with the input end of the rectifier.

According to some alternative embodiments, the coil windings and the magnets are distributed along the circumference of two concentric circles, respectively, wherein the diameter of the circumference of the coil windings is smaller than the diameter of the circumference of the magnets.

According to some alternative embodiments, the rotor support comprises a flywheel.

According to some alternative embodiments, the stator frame has a plurality of receiving slots, the coil windings being located within the receiving slots; the number of grooves of the accommodating groove is greater than or equal to 18, and the number of poles of the magnet is greater than or equal to 12.

According to some alternative embodiments, the number of slots of the receiving slot is an odd number.

According to some alternative embodiments, the pole arc coefficient of the motor is less than or equal to 0.7.

According to some alternative embodiments, the magnet is a permanent magnet.

According to a second aspect of embodiments of the present disclosure, there is provided an exercise apparatus comprising:

The power generation device of the first aspect;

The equipment body, the equipment body includes equipment support and transmission system, the transmission system connect in the equipment support, and to power generation facility's rotor transmission mechanical energy.

According to some alternative embodiments, the exercise apparatus further comprises:

And the load is connected with the equipment body and is connected with the output end of the rectifier of the power generation device.

The embodiment of the disclosure discloses a power generation device and fitness equipment, which can convert mechanical energy into electric energy through a motor, and can convert alternating current output by the motor into direct current for loads through a rectifier. Therefore, the conversion from mechanical energy to electric energy can be realized by utilizing the power generation device, the mechanical energy generated by the body-building equipment can be fully utilized, the device is economical and environment-friendly, the generated electric energy can be used for supplying power to the body-building equipment, and the use experience of a user on the body-building equipment can be improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is one of schematic structural views of an electric motor according to an exemplary embodiment;

FIG. 2 is a second schematic diagram of a motor according to an exemplary embodiment;

FIG. 3 is a schematic diagram of an induced electromotive force simulation waveform of a power generation device output, according to an example embodiment;

FIG. 4 is a schematic diagram of a topology of a rectifier shown according to an exemplary embodiment;

fig. 5 is a block diagram of an exercise apparatus according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the embodiments of the present disclosure. Rather, they are merely examples of apparatus and methods consistent with aspects of embodiments of the present disclosure as detailed in the accompanying claims.

The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

Embodiments of the first aspect of the present disclosure provide a power generation apparatus comprising: a motor 80 and a rectifier 90.

Wherein the motor 80 comprises: a rotor 02 and a stator 01 coaxially distributed, wherein the rotor 02 is used for rotating along the axis of the rotor 02 under the action of rotating mechanical energy and generating a rotating magnetic field; the stator 01 cuts the magnetic force lines in the direction perpendicular to the magnetic force lines of the magnetic field and generates alternating current; the stator 01 is connected with the input end of the rectifier 90, and the output end of the rectifier 90 is used for being connected with a load; the motor 80 converts the mechanical energy into electrical energy in the form of alternating current, and the rectifier 90 converts the alternating current into direct current for delivery to the load.

In general, the rotor 02 has magnetism, the stator 01 has conductivity, and the stator 01 can generate induced electromotive force when the rotor 02 rotates, thereby generating electric energy and realizing conversion from mechanical energy to electric energy.

The rectifier 90 functions to convert alternating current to direct current for use by a load.

In some embodiments, rectifier 90 comprises a bridge rectifier.

In some embodiments, the load may be electronics in the power plant. The power equipment can be equipment for generating mechanical energy for driving the rotor 02 to rotate, and can also be other equipment requiring electricity. The electronics include, but are not limited to, a battery, an interface module or controller, and the like.

In the disclosed embodiment, the conversion of mechanical energy into electrical energy can be achieved by the motor 80, and the rectifier 90 can be utilized to convert the alternating current output by the motor 80 into direct current for use by a load. Therefore, the conversion from mechanical energy to electric energy can be realized by utilizing the power generation device, the mechanical energy generated by the body-building equipment can be fully utilized, the device is economical and environment-friendly, the generated electric energy can be used for supplying power to the body-building equipment, and the use experience of a user on the body-building equipment can be improved.

According to some alternative embodiments, the rotor 02 comprises a rotor support 20 and a magnet 30, the magnet 30 being connected to the rotor support 20; the rotor support 20 is configured to receive the mechanical energy; and/or, the stator 01 comprises a stator frame 10 and a coil winding 41, the coil winding 41 is connected to the stator frame 10, and the coil winding 41 is connected to the input end of the rectifier 90.

Without limitation, the stator frame 10 includes a stator core.

The magnet 30 includes a permanent magnet. The permanent magnet can be a metal alloy magnet or a magnet made of ferrite permanent magnet material.

The magnets 30 are annularly distributed on the rotor holder 20, the coil windings 41 are annularly distributed on the stator holder 10, and the coil windings 41 and the magnets 30 are coaxially distributed.

Fig. 4 shows an exemplary schematic diagram of a bridge rectifier.

As shown in fig. 4, the rectifier 90 includes a plurality of power diodes 50 and a filter element, and the plurality of power diodes 50 are connected in a bridge type. The motor 80 is a three-phase motor, and the coil winding 41 in the motor stator 01 is connected with the power diode 50 through three leads to realize current transmission. The load 70 is connected to the output of the rectifier 90. As shown in fig. 4, the coil windings 41 respectively include the following three phases: phase A (P-A), phase B (P-B) and phase C (P-C).

The filter element comprises a capacitance and/or a resistance. Fig. 4 shows schematically a filter capacitor 60 connected in parallel with the power diode 50.

The permanent magnets arranged on the rotor support 20 and the winding coils arranged on the stator 01 are utilized to generate relative motion, the number of magnetic force lines contained in the coil winding 41 is changed continuously, and induced electromotive force is generated in the stator winding; the induced electromotive force is used for supplying power to load 70 equipment through a bridge rectifier formed by electronic switching tubes (namely power diode 50), so that conversion from mechanical energy to electric energy is realized.

According to some alternative embodiments, the coil winding 41 and the magnet 30 are distributed along the circumferences of two concentric circles, wherein the diameter of the circumference of the coil winding 41 is smaller than the diameter of the circumference of the magnet 30.

As shown in fig. 1 and 2, the coil winding 41 is located between the center of the circumference where the magnets 30 are located and the magnets 30, that is, the coil winding 41 is located inside the annular structure formed by the plurality of magnets 30. The motor 80 distributed in this manner is an external rotor motor.

Compared with an inner rotor motor, the outer rotor motor is smaller in size and lower in cost, and is beneficial to reducing the weight of the equipment when the motor is applied to power equipment. Moreover, the external rotor motor is more suitable for a low-speed high-torque scene.

According to some alternative embodiments, the rotor support 20 is multiplexed as a flywheel.

The rotor support 20 can be used to support the magnets 30 as well as a flywheel. When used as a flywheel, the rotor support 20 generally has a large moment of inertia so that the rotor support 20 can store energy and smooth the rotational speed of the motor 80.

According to some alternative embodiments, the stator frame 10 has a plurality of receiving slots 40, the coil windings 41 being located within the receiving slots 40; the number of slots of the accommodating slot 40 is 18 or more, and the number of poles of the magnet 30 is 12 or more.

The number of grooves of the motor 80 is more than or equal to 18, and the number of corresponding rotor poles is more than or equal to 12, so that the size and cost of the motor 80 are reduced, electromagnetic noise and mechanical noise are reduced, and the use experience of a user is improved.

Without limitation, the pole slot mating parameters of the motor 80 may be as shown in Table one. For example: when the number of stator slots (i.e., the number of slots of the receiving slot 40) is 18, the number of poles of the rotor may be 12, 14, 16, 20, and 22. The number of poles of the rotor 02 may be 16, 18, 20, 22 or 26 for a stator slot number of 24. The number of poles of the rotor 02 may be 24, 26, 28, 30 or 32 with a stator slot number of 27.

Pole slot mating parameters for a watch-type motor

According to some alternative embodiments, the number of slots of the receiving slot 40 is an odd number.

The cogging torque of the odd slot motor 80 is greatly reduced compared to the even slot, thus greatly reducing noise, and avoiding the complex process of stator slots or rotor diagonal poles required for the even slot to reduce the cogging torque.

According to some alternative embodiments, the polar arc coefficient of the motor 80 is less than or equal to 0.7.

In some embodiments, as shown in FIG. 2, the permanent magnet pole arc coefficient in the motor 80 is 0.67.+ -. 0.03.

The polar arc coefficient is less than or equal to 0.7, so that the waveform of the output voltage of the power generation device can be more sinusoidal, EMC (electromagnetic compatibility, which means comprehensive evaluation of the interference (EMI) and anti-interference capability (EMS) of an electronic product in terms of electromagnetic field) is reduced.

The power generation device of the embodiment of the disclosure can obtain lower electromagnetic noise and mechanical noise, and the output three-phase voltage waveform is also more sinusoidal, wherein the simulated electromotive force waveform induced by the power generation device is shown in fig. 3. In fig. 3, the abscissa indicates Time (Time) in ms. The ordinate is the induced voltage (induce voltage), in V. The three curves in fig. 3 represent waveforms of the induced voltages of three phases (i.e., a phase, B phase and C phase corresponding to fig. 4) with time, respectively.

In some examples, the power generation device generates less than 50 decibels of noise.

In the embodiment of the present disclosure, the stator 01 is rotated to generate a rotating magnetic field, and the stator 01 having the coil winding 41 is stationary, and in the power generating apparatus having such a structure, the motor may be a brushless motor. Compared with a brush motor, the brushless motor has smaller noise, and is more beneficial to the application of the power generation device to indoor scenes.

A second aspect of the present disclosure provides an exercise apparatus, as shown in fig. 5, comprising:

the power generation device according to the embodiment of the first aspect;

The equipment body 110, the equipment body 110 includes equipment support and transmission system, the transmission system is connected to the equipment support, and transmits mechanical energy to the rotor 02 of the power generation device.

Exercise equipment is exemplified by exercise bike. The equipment support may be referred to as a frame. The transmission system comprises pedals, pedal cranks, transmission gears and the like, wherein the pedals are connected to the pedal cranks, and the pedal cranks are connected to gear shafts of the transmission gears. When a body-building person exercises, mechanical energy is input through pedals, and the mechanical energy is transmitted to the power generation device through the transmission system.

Therefore, when the power generation device disclosed by the embodiment of the disclosure is applied to fitness equipment, work of a fitness person is not wasted, but is converted into electric energy, so that the power generation device is economical and environment-friendly.

In addition to exercise equipment, the power generation device can be applied to other devices that can generate mechanical energy.

According to some alternative embodiments, the exercise apparatus further comprises: and a load 70 connected to the fixture body 110, wherein the load 70 is connected to an output terminal of the rectifier 90 of the power generation device.

Loads 70 within the exercise apparatus include, but are not limited to, batteries, interface modules or controllers, and the like.

Furthermore, load 70 may be a device independent of other exercise equipment, such as: a cell phone, a headset or a wearable device, etc.

In some examples, as depicted in fig. 5, the exercise apparatus includes a power generation device and an apparatus body 110. The fixture body 110 includes a fixture support and a transmission system coupled to the fixture support and transmitting mechanical energy to the power generation device.

The power generation device includes: brushless motor and rectifier 90. As shown in fig. 1 and 2, the brushless motor includes: the rotor 02 and the stator 01 are coaxially distributed, and the rotor 02 is used for receiving mechanical energy for driving the rotor 02 to rotate; the stator 01 is connected with the input end of the rectifier 90, and the output end of the rectifier 90 is used for being connected with the load 70; the motor 80 converts mechanical energy into electrical energy in the form of alternating current, and the rectifier 90 converts the alternating current into direct current for delivery to the load 70.

The load 70 may be electronics within the exercise apparatus or may be a device such as a cell phone that is independent of the exercise apparatus.

The rotor 02 includes a rotor flywheel and permanent magnets, and is mounted on the rotor flywheel by the magnets 30; the rotor flywheel is used for receiving mechanical energy; the stator 01 includes a stator frame 10 and a coil winding 41, the coil winding 41 is mounted on the stator frame 10, and the coil winding 41 is connected to an input terminal of the rectifier 90.

The brushless motor is an external rotor motor in which the coil windings 41 are located inside the magnets 30. Rectifier 90 is a bridge rectifier (as shown in fig. 4).

The stator frame 10 has a plurality of receiving slots 40, and the coil windings 41 are located in the receiving slots 40; the number of slots of the accommodating slot 40 is 27, and the number of poles of the brushless motor is 30. The polar arc coefficient of the permanent magnet is less than or equal to 0.7.

When a body-building person steps on the body-building vehicle, the rotor flywheel of the brushless motor is driven to rotate through the transmission system, permanent magnet steel is arranged in the rotor flywheel, the steel magnet rotates along with the rotor flywheel, a rotating magnetic field is continuously cut to generate sine wave induced electromotive force, three-phase leads of the coil windings 41 are connected with the bridge rectifier, mechanical energy is converted into electric energy to generate direct current, energy conversion is achieved, energy conservation and environmental protection are achieved, and therefore mobile phones or other electronic equipment can be charged during body building, and power supply of the whole vehicle is maintained. The power generation device used by the fitness equipment can obtain lower electromagnetic noise and mechanical noise, and the output three-phase voltage waveform is more sinusoidal (shown in fig. 3).

The features disclosed in the several product embodiments provided in the present disclosure may be combined arbitrarily without conflict to obtain new product embodiments.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (9)

1. A power generation device, characterized in that the power generation device comprises: a motor (80) and a rectifier (90);

the motor (80) includes: a rotor (02) and a stator (01) coaxially distributed, wherein the rotor (02) is used for rotating along the axis of the rotor (02) under the action of rotating mechanical energy and generating a rotating magnetic field; the stator (01) cuts the magnetic force lines in the direction perpendicular to the magnetic force lines of the magnetic field and generates alternating current; wherein the rotor (02) comprises a rotor support (20) and a magnet (30), the stator (01) comprises a stator support (10) and a coil winding (41), the stator support (10) is provided with a plurality of accommodating grooves (40), and the coil winding is positioned in the accommodating grooves (40); the number of grooves of the accommodating groove (40) is greater than or equal to 18, and the number of poles of the magnet (30) is greater than or equal to 12;

The stator (01) is connected with the input end of the rectifier (90), and the output end of the rectifier (90) is connected with the load (70);

the rectifier (90) is configured to convert the alternating current into direct current and to output the direct current to the load via the output.

2. The power generation device of claim 1, wherein the power generation device comprises a power generator,

The magnet (30) is connected to the rotor support (20); -the rotor support (20) is adapted to receive the mechanical energy; and/or the number of the groups of groups,

The coil winding (41) is connected to the stator frame (10), the coil winding (41) being connected to the input of the rectifier (90).

3. The power generation device according to claim 2, wherein the coil windings (41) and the magnets (30) are distributed along the circumference of two concentric circles, respectively, wherein the diameter of the circumference of the coil windings (41) is smaller than the diameter of the circumference of the magnets (30).

4. The power generation device according to claim 2, wherein the rotor support (20) comprises a flywheel.

5. The power generation device according to claim 1, wherein the number of the accommodating grooves (40) is an odd number.

6. The power generation device according to claim 1 or 2, characterized in that the pole arc coefficient of the electric machine (80) is less than or equal to 0.7.

7. The power generation device of claim 2, wherein the magnet is a permanent magnet.

8. An exercise apparatus, the exercise apparatus comprising:

The power generation apparatus of any one of claims 1 to 7;

The equipment body (110), equipment body (110) include equipment support and transmission system, the transmission system connect in the equipment support to mechanical energy is transmitted to power generation facility's rotor (02).

9. The exercise apparatus of claim 8, wherein the exercise apparatus further comprises:

And the load (70) is connected to the equipment body, and the load (70) is connected with the output end of the rectifier (90) of the power generation device.