Power generation device

Abstract

The utility model discloses a power generation device. The device comprises a transmission part used for transmitting power of the fitness equipment; the power generation component comprises an electromagnetic coil; the power generation component is connected with the transmission component so as to convert power of the fitness equipment into electric energy through the electromagnetic coil; the power supply circuit comprises a rectifying circuit and a DCDC conversion circuit which are connected in sequence; the rectifying circuit is connected with the electric energy output end of the power generation component, and the DCDC conversion circuit is connected with a load; the output capability control device is in communication connection with the load so as to obtain the target receiving power of the load; and the output capability control device is electrically connected with the DCDC conversion circuit so as to determine the target output current of the electric energy output end according to the target receiving power, so that the electromagnetic coil can change the magnetic field intensity based on the target output current. By means of the technical scheme, the electromagnetic damping can be adjusted at will, the generated electric energy can be provided for consumer electronics or stored in an energy storage device, and the concept of low carbon and environmental protection is met.

Description

Technical Field

[0001] This application generally relates to the field of power generation technology. More specifically, this application relates to a power generation device. Background Art

[0002] Traditional fitness equipment can change the magnetic field by directly changing the current in the coil, so as to achieve the purpose of changing the damping. However, such fitness equipment consumes electrical energy. With the popularization of the concept of low-carbon environmental protection, some fitness equipment can be switched from the power-consuming mode to the power generation mode. However, the damping of fitness equipment with power generation function depends on the energy that the load can extract. If the load is consumer electronic products such as mobile phones and computers, during the process of the fitness equipment generating electricity to charge the consumer electronic products, as the battery of the consumer electronic products gradually becomes full, the damping of the fitness equipment will become smaller and smaller. If the load is a high-power energy storage device, the fitness equipment will only generate electricity at the set maximum power, and its damping cannot be adjusted. Compared with traditional fitness equipment, it cannot achieve the effect of arbitrarily adjusting the damping.

[0003] In view of this, there is an urgent need to provide a power generation device, so that while being able to arbitrarily adjust the electromagnetic damping, it can also supply the generated electrical energy to consumer electronic products or store it in an energy storage device, which conforms to the concept of low-carbon environmental protection. Summary of the Utility Model

[0004] In order to solve at least one or more of the above-mentioned technical problems, this application proposes a power generation device in multiple aspects. This power generation device can arbitrarily adjust the electromagnetic damping, and at the same time can supply the generated electrical energy to consumer electronic products or store it in an energy storage device, which conforms to the concept of low-carbon environmental protection.

[0005] This application provides a power generation device, including: a transmission component for transmitting the power of the fitness equipment; a power generation component including an electromagnetic coil; the power generation component is connected to the transmission component to convert the power of the fitness equipment into electrical energy through the electromagnetic coil; a power supply circuit including a rectifier circuit and a DCDC conversion circuit connected in sequence; the rectifier circuit is connected to the electrical energy output terminal of the power generation component, and the DCDC conversion circuit is connected to the load; and an output capacity control device communicatively connected to the load to be able to obtain the target receiving power of the load; and the output capacity control device is electrically connected to the DCDC conversion circuit to be able to determine the target output current of the electrical energy output terminal according to the target receiving power, so that the electromagnetic coil can change the magnetic field strength based on the target output current.

[0006] In some embodiments, the power generation component includes a power generation rotor and a power generation stator; the transmission component is connected to the power generation rotor to transmit the power of the fitness equipment to the power generation rotor.

[0007] In some embodiments, at least one permanent magnet is provided on the power generation rotor; at least one coil is provided on the power generation stator; the at least one permanent magnet and the at least one coil form an electromagnetic coil.

[0008] In some embodiments, the at least one permanent magnet is uniformly arranged along the edge of the power generation rotor; the at least one coil is uniformly arranged along the edge of the power generation stator.

[0009] In some embodiments, the setting positions of the at least one permanent magnet on the power generation rotor correspond one-to-one to the setting positions of the at least one coil on the power generation stator.

[0010] In some embodiments, the DCDC conversion circuit is a BUCK circuit; the BUCK circuit includes a BUCK control chip, a voltage regulation circuit, and a first output circuit connected in sequence; the voltage regulation circuit includes a switch Q1, a switch Q2, an inductor L1, and an energy storage capacitor C1; the positive output terminal of the rectifier circuit, the switch Q1, the inductor L1, the energy storage capacitor C1, and the negative output terminal of the rectifier circuit are connected in series; the switch Q2, the inductor L1, and the energy storage capacitor C1 are connected in series; the switch Q2 is connected to the negative output terminal; the first output circuit includes an output control switch Q3; the energy storage capacitor C1, the output control switch Q3, and the load are connected in series; the negative electrodes of the energy storage capacitor C1 and the load are connected to the negative output terminal; the BUCK control chip is communicatively connected to the energy storage capacitor C1 to be able to collect the input voltage of the energy storage capacitor C1; and the BUCK control chip is electrically connected to the switch Q1 and the switch Q2 to be able to control the opening and closing of the switch Q1 and the switch Q2 according to the input voltage of the energy storage capacitor C1.

[0011] In some embodiments, the DCDC conversion circuit is a BOOST circuit; the BOOST circuit includes a BOOST control chip, a boost circuit, and a second output circuit connected in sequence; the boost circuit includes an inductor L2, a switch Q4, a switch Q5, and an energy storage capacitor C2; the positive output terminal of the rectifier circuit, the inductor L2, the switch Q5, the energy storage capacitor C2, and the negative output terminal of the rectifier circuit are connected in series; the switch Q4, the switch Q5, and the energy storage capacitor C2 are connected in series; the switch Q4 is connected to the negative output terminal; the second output circuit includes an output control switch Q6; the energy storage capacitor C2, the output control switch Q6, and the load are connected in series; the negative electrodes of the energy storage capacitor C2 and the load are connected to the negative output terminal; the BOOST control chip is communicatively connected to the energy storage capacitor C2 to be able to collect the input voltage of the energy storage capacitor C2; and the BOOST control chip is electrically connected to the switch Q4 and the switch Q5 to be able to control the opening and closing of the switch Q4 and the switch Q5 according to the input voltage of the energy storage capacitor C2.

[0012] In some embodiments, the output capability control device is connected between the rectifier circuit and the load.

[0013] In some embodiments, the output capacity control device is an output conversion IC chip; the output conversion IC chip includes a mutually connected BUCK step-down circuit and a PD fast charging circuit.

[0014] In some embodiments, the power generation component is a disk-type micro motor.

[0015] In some embodiments, the transmission component is a bicycle gear disc.

[0016] The technical solution provided by this application may include the following beneficial effects:

[0017] The power generation device provided by this application includes a transmission component, a power generation component, a power supply circuit, and an output capacity control device. Among them, the transmission component is used to transmit the power of the fitness device. The power generation component includes an electromagnetic coil, and the power generation component is connected to the transmission component to convert the power of the fitness device into electrical energy through the electromagnetic coil. The power supply circuit includes a rectification circuit and a DCDC conversion circuit connected in sequence. The rectification circuit is connected to the electrical energy output terminal of the power generation component, and the DCDC conversion circuit is connected to the load. Further, the output capacity control device is communicatively connected to the load to be able to obtain the target receiving power of the load, and the output capacity control device is electrically connected to the DCDC conversion circuit to be able to determine the target output current of the electrical energy output terminal according to the target receiving power without considering circuit losses. Thus, the electromagnetic coil can change the magnetic field strength based on the target output current so that the electromagnetic coil can meet the condition of generating the target output current. Furthermore, the purpose of adjusting the magnetic field strength of the electromagnetic coil by arbitrarily adjusting the target receiving power of the load is achieved. The magnetic field strength of the electromagnetic coil is proportional to the electromagnetic damping of the electromagnetic coil, meeting the needs of users for different exercise intensities. At the same time, the generated electrical energy can also be provided to consumer electronics products or stored in an energy storage device, conforming to the concept of low-carbon environmental protection. Description of the Drawings

[0018] By reading the following detailed description with reference to the drawings, the above and other objects, features, and advantages of the exemplary embodiments of this application will become readily understood. In the drawings, several embodiments of this application are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, where:

[0019] Figure 1 Shows the circuit structure schematic diagram of the power supply circuit in the power generation device of the embodiment of this application;

[0020] Figure 2 Shows the circuit structure schematic diagram of the power generation device of the embodiment of this application when the DCDC conversion circuit of the power supply circuit is a BUCK circuit;

[0021] Figure 3The figure shows a schematic circuit diagram of the power generation device in the embodiment of the present application when the DCDC conversion circuit of the power supply circuit is a BOOST circuit;

[0022] Figure 4 The figure shows a schematic structural diagram of the power generation rotor of the electromagnetic coil in the power generation device of the embodiment of the present application;

[0023] Figure 5 The figure shows a schematic structural diagram of the power generation stator of the electromagnetic coil in the power generation device of the embodiment of the present application. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. For the sake of simplicity and clarity of description, where appropriate, the same reference numerals may be repeated in the drawings to indicate corresponding or similar elements. In addition, the present application sets forth many specific details in order to provide a thorough understanding of the embodiments described herein. However, those of ordinary skill in the art will understand that the embodiments described herein can be practiced without these specific details. In other cases, well-known methods, processes, and components have not been described in detail so as not to obscure the embodiments described herein. Moreover, this description should not be regarded as limiting the scope of the embodiments described herein. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present application.

[0025] It should be understood that the possible terms "first" or "second" etc. in the claims, the specification, and the drawings disclosed in the present application are used to distinguish different objects, rather than to describe a specific order. The terms "comprising" and "including" used in the specification and claims of the present application indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0026] It should also be understood that the terms used in the specification of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. As used in the specification and claims of the present application, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms. It should be further understood that the term " / and" used in the specification and claims of the present application refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0027] As used in this specification and the claims, the term "if" may be construed, depending on the context, as "when", "once", "in response to determining", or "in response to detecting". Similarly, the phrase "if determined" or "if [the described condition or event] is detected" may be construed, depending on the context, to mean "once determined", "in response to determining", "once [the described condition or event] is detected", or "in response to detecting [the described condition or event]".

[0028] Traditional fitness equipment can change the magnetic field by directly changing the current in the coil, so as to achieve the purpose of changing the damping. However, such fitness equipment consumes electric energy. With the popularization of the concept of low-carbon environmental protection, some fitness equipment can be converted from a power-consuming mode to a power-generating mode. However, the damping of the fitness equipment with power-generating function depends on the energy that the load can extract. If the load is consumer electronic products such as mobile phones and computers, during the process of the fitness equipment generating electricity to charge the consumer electronic products, as the battery of the consumer electronic products gradually becomes full, the damping of the fitness equipment will also become smaller and smaller. If the load is a high-power energy storage device, the fitness equipment will only generate electricity at the set maximum power, and its damping cannot be adjusted. Compared with traditional fitness equipment, it cannot achieve the effect of arbitrarily adjusting the damping.

[0029] In view of this, there is an urgent need to provide a power generation device that can not only arbitrarily adjust the electromagnetic damping, but also supply the generated electric energy to consumer electronic products or store it in an energy storage device, which conforms to the concept of low-carbon environmental protection.

[0030] The following will describe in detail the specific embodiments of the present application with reference to the accompanying drawings.

[0031] Figure 1 The circuit structure diagram of the power supply circuit in the power generation device according to the embodiment of the present application is shown. Please refer to Figure 1 The power generation device shown in the embodiment of the present application may include: a transmission component, a power generation component, a power supply circuit, and an output capacity control device.

[0032] In the embodiment of the present application, the transmission component is used to transmit the power of the fitness equipment. In some application scenarios, the fitness equipment may be a bicycle. In this case, the corresponding transmission component may be a bicycle gear disc. It can be understood that in actual applications, the forms of the fitness equipment and its corresponding transmission equipment can be diverse, and the forms of the fitness equipment and its corresponding transmission equipment need to be determined according to the actual application situation. The present application does not impose any restrictions in this regard.

[0033] In the embodiments of the present application, the power generation component includes an electromagnetic coil. In some application scenarios, the power generation component can be a disk-type micro motor. It can be understood that in actual applications, the form of the power generation component can be diverse, and the form of the power generation component needs to be determined according to the actual application situation. The present application does not impose any restrictions in this regard. Further, the power generation component is connected to the transmission component to convert the power of the fitness device into electrical energy through the electromagnetic coil. It can be understood that the power of the fitness device drives the coil and the magnet in the electromagnetic coil to perform a magnetic induction line cutting movement, thereby being able to generate an induced electromotive force.

[0034] As Figure 1 shown, in the embodiments of the present application, the power supply circuit includes a rectifier circuit and a DCDC conversion circuit connected in sequence to achieve stable power supply to the load. Among them, the rectifier circuit is connected to the power output terminal of the power generation component, and the DCDC conversion circuit is connected to the load. Further, the output capacity control device is communicatively connected to the load to be able to obtain the target received power of the load; and the output capacity control device is electrically connected to the DCDC conversion circuit to be able to determine the target output current of the power output terminal according to the target received power, so that the electromagnetic coil can change the magnetic field intensity based on the target output current. It can be understood that the damping of the fitness device with a power generation function depends on the energy that the load can extract, and the current of the electromagnetic coil cannot be actively adjusted. In addition, under the condition of not considering losses, the input power of the circuit is equal to the output power (i.e., the above-mentioned target received power). Thus, when the change in the movement speed is small, the input voltage ( Figure 1 V in bus ) corresponding to the input power can be a fixed value. Therefore, the input current corresponding to the input power changes in direct proportion to the target received power, that is, when the target received power increases, the input current needs to increase. In order for the power generation component to output the corresponding input current, it is necessary to change its magnetic field intensity accordingly, and the change in the magnetic field intensity will cause a change in the electromagnetic damping. Therefore, as long as the target received power is changed, the electromagnetic damping of the power generation component can be changed.

[0035] The power generation device of the present application includes a transmission component, a power generation component, a power supply circuit, and an output capacity control device. Among them, the transmission component is used to transmit the power of the fitness equipment. The power generation component includes an electromagnetic coil, and the power generation component is connected to the transmission component to convert the power of the fitness equipment into electrical energy through the electromagnetic coil. The power supply circuit includes a rectification circuit and a DCDC conversion circuit connected in sequence. The rectification circuit is connected to the electrical energy output terminal of the power generation component, and the DCDC conversion circuit is connected to the load. Further, the output capacity control device is communicatively connected to the load to be able to obtain the target receiving power of the load, and the output capacity control device is electrically connected to the DCDC conversion circuit to be able to determine the target output current of the electrical energy output terminal according to the target receiving power without considering circuit losses. Thus, the electromagnetic coil can change the magnetic field intensity based on the target output current so that the electromagnetic coil can meet the conditions for generating the target output current. Furthermore, the purpose of adjusting the magnetic field intensity of the electromagnetic coil by arbitrarily adjusting the target receiving power of the load is achieved. The magnetic field intensity of the electromagnetic coil is proportional to the electromagnetic damping of the electromagnetic coil, meeting the needs of users for different exercise intensities. At the same time, the generated electrical energy can also be provided to consumer electronics products or stored in an energy storage device, conforming to the concept of low-carbon environmental protection.

[0036] In some embodiments, the DCDC conversion circuit can be further designed. The following will be combined with Figure 2 and Figure 3 to elaborate on the DCDC conversion circuit and the output capacity control device in detail. Figure 2 shows a schematic circuit diagram of the power generation device in an embodiment of the present application when the DCDC conversion circuit of the power supply circuit is a BUCK circuit; Figure 3 shows a schematic circuit diagram of the power generation device in an embodiment of the present application when the DCDC conversion circuit of the power supply circuit is a BOOST circuit. Please refer to Figure 2 and Figure 3 , the power generation device shown in the embodiment of the present application may include:

[0037] As Figure 2 shown, in the embodiment of the present application, when the DCDC conversion circuit is a BUCK circuit, the BUCK circuit may include a BUCK control chip (i.e., Figure 2The Buck IC in it), a voltage stabilizing circuit, and a first output circuit connected in sequence. Among them, the voltage stabilizing circuit includes a switch Q1, a switch Q2, an inductor L1, and a storage capacitor C1. The positive output terminal of the rectifying circuit, the switch Q1, the inductor L1, the storage capacitor C1, and the negative output terminal of the rectifying circuit are connected in series. The switch Q2, the inductor L1, and the storage capacitor C1 are connected in series, and the switch Q2 is connected to the negative output terminal. In addition, the first output circuit includes an output control switch Q3. Among them, the storage capacitor C1, the output control switch Q3, and the load are connected in series, and the negative electrodes of the storage capacitor C1 and the load are connected to the negative output terminal. In addition, the BUCK control chip is communicatively connected to the storage capacitor C1 to be able to collect the input voltage of the storage capacitor C1 (i.e., Figure 2 V in 01 ), and the BUCK control chip is electrically connected to the switch Q1 and the switch Q2 to be able to control the opening and closing of the switch Q1 and the switch Q2 according to the input voltage of the storage capacitor C1.

[0038] As Figure 3 shown, in the embodiment of the present application, when the DCDC conversion circuit is a BOOST circuit, the BOOST circuit may include a BOOST control chip (i.e., Figure 2 the Boost IC in

[0039] ), a boost circuit, and a second output circuit connected in sequence. Among them, the boost circuit includes an inductor L2, a switch Q4, a switch Q5, and a storage capacitor C2. The positive output terminal of the rectifying circuit, the inductor L2, the switch Q5, the storage capacitor C2, and the negative output terminal of the rectifying circuit are connected in series. The switch Q4, the switch Q5, and the storage capacitor C2 are connected in series, and the switch Q4 is connected to the negative output terminal. In addition, the second output circuit includes an output control switch Q6. Among them, the storage capacitor C2, the output control switch Q6, and the load are connected in series, and the negative electrodes of the storage capacitor C2 and the load are connected to the negative output terminal. In addition, the BOOST control chip is communicatively connected to the storage capacitor C2 to be able to collect the input voltage of the storage capacitor C2, and the BOOST control chip is electrically connected to the switch Q4 and the switch Q5 to be able to control the opening and closing of the switch Q4 and the switch Q5 according to the input voltage of the storage capacitor C2. Figure 1 In the embodiment of the present application, the output capability control device ( Figure 2 and Figure 3The V0 in it is converted into a stable DC voltage that can be received by the load, and the input current is converted into a stable DC current that can be received by the load. The output capability control device is an output conversion IC chip. Exemplarily, an output conversion IC chip of Infineon CYPD7271 can be used. The output conversion IC chip includes a BUCK step-down circuit and a PD fast charging circuit connected to each other. The BUCK step-down circuit and the PD fast charging circuit can adopt existing well-known circuits. Thus, the conversion IC chip integrates the BUCK function and the PD function. The PD fast charging circuit can define the output capability, including the maximum output voltage and current.

[0040] Exemplarily, when the connected load is a mobile phone and the charging voltage of the mobile phone is low, three damping levels can be set: simple, normal, and difficult. The corresponding target receiving powers are 9V / 1A (9W), 9V / 2A (18W), and 9V / 3A (27W). When the connected load is a laptop computer and the charging voltage of the computer is generally 15V, three damping levels can be set: simple, normal, and difficult. The corresponding target receiving powers are 15V / 1A (15W), 15V / 2A (30W), and 15V / 3A (45W). When the connected load is a UPS or a high-power power bank, three damping levels can also be set: simple, normal, and difficult. The corresponding target receiving powers are 20V / 1A (20W), 20V / 2A (40W), and 20V / 3A (60W). When the above loads are connected, the output capability control device can intelligently identify and enter the corresponding gear according to the damping level set by the user.

[0041] In some embodiments, the electromagnetic coil may include a power generation rotor and a power generation stator. The following will be combined with Figure 4 and Figure 5 to describe the structure of the electromagnetic coil in detail. Figure 4 FIG. shows a schematic structural diagram of the power generation rotor of the electromagnetic coil in the power generation device of the embodiment of the present application; Figure 5 FIG. shows a schematic structural diagram of the power generation stator of the electromagnetic coil in the power generation device of the embodiment of the present application. Please refer to Figure 4 and Figure 5 , the power generation device shown in the embodiment of the present application may include:

[0042] The power generation component includes a power generation rotor 1 and a power generation stator 2. Among them, the transmission component is connected to the power generation rotor 1 to transmit the power of the fitness device to the power generation rotor 1. Further, at least one permanent magnet 11 is provided on the power generation rotor 1, and at least one coil 21 is provided on the power generation stator 2. At least one permanent magnet 11 and at least one coil 21 form an electromagnetic coil. When the power of the fitness device drives the power generation rotor 1 to rotate, the coil 21 on the power generation stator 2 will cut the magnetic field of the permanent magnet 11 of the power generation rotor 1. According to the law of electromagnetic induction, an induced electromotive force will be generated on the coil 21. In Figure 1Three power output terminals L1, L2, and L3 therein generate three-phase AC voltage.

[0043] In some application scenarios, at least one permanent magnet can be evenly arranged along the edge of the power generation rotor, and at least one coil can be evenly arranged along the edge of the power generation stator. And the setting positions of at least one permanent magnet on the power generation rotor can correspond one-to-one to the setting positions of at least one coil on the power generation stator.

[0044] Although multiple embodiments of the present application have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art can think of many changes, alterations, and alternative ways without departing from the spirit and idea of the present application. It should be understood that various alternative solutions to the embodiments of the present application described herein can be adopted in the process of practicing the present application. The appended claims are intended to define the protection scope of the present application and thus cover equivalents or alternatives within the scope of these claims.

Claims

1. A power generation device, characterized in that, Comprising: A transmission component for transmitting the power of the fitness equipment; A power generation component including an electromagnetic coil; the power generation component is connected to the transmission component to convert the power of the fitness equipment into electric energy through the electromagnetic coil; A power supply circuit including a rectification circuit and a DCDC conversion circuit connected in sequence; the rectification circuit is connected to the electric energy output terminal of the power generation component, and the DCDC conversion circuit is connected to the load; and An output capacity control device communicatively connected to the load to be able to obtain the target receiving power of the load; and the output capacity control device is electrically connected to the DCDC conversion circuit to be able to determine the target output current of the electric energy output terminal according to the target receiving power, so that the electromagnetic coil can change the magnetic field intensity based on the target output current.

2. The power generation device according to claim 1, wherein The power generation component includes a power generation rotor and a power generation stator; The transmission component is connected to the power generation rotor to transmit the power of the fitness equipment to the power generation rotor.

3. The power generation device according to claim 2, wherein At least one permanent magnet is provided on the power generation rotor; At least one coil is provided on the power generation stator; The at least one permanent magnet and the at least one coil constitute the electromagnetic coil.

4. The power generation device according to claim 3, wherein The at least one permanent magnet is uniformly arranged along the edge of the power generation rotor; The at least one coil is uniformly arranged along the edge of the power generation stator.

5. The power generation device according to claim 4, wherein The setting positions of the at least one permanent magnet on the power generation rotor correspond one by one to the setting positions of the at least one coil on the power generation stator.

6. The power generation device according to claim 1, characterized in that, The DCDC conversion circuit is a BUCK circuit; The BUCK circuit includes a BUCK control chip and a voltage regulation circuit and a first output circuit connected in sequence; The voltage regulation circuit includes a switch Q1, a switch Q2, an inductor L1 and a storage capacitor C1; The positive output terminal of the rectification circuit, the switch Q1, the inductor L1, the storage capacitor C1 and the negative output terminal of the rectification circuit are connected in series; The switch Q2, the inductor L1 and the storage capacitor C1 are connected in series; The switch Q2 is connected to the negative output terminal; The first output circuit includes an output control switch Q3; The storage capacitor C1, the output control switch Q3 and the load are connected in series; The negative electrodes of the storage capacitor C1 and the load are connected to the negative output terminal; The BUCK control chip is communicatively connected to the storage capacitor C1 to be able to collect the input voltage of the storage capacitor C1; and the BUCK control chip is electrically connected to the switch Q1 and the switch Q2 to be able to control the on / off of the switch Q1 and the switch Q2 according to the input voltage of the storage capacitor C1.

7. The power generation device according to claim 1, characterized in that The DCDC conversion circuit is a BOOST circuit; The BOOST circuit includes a BOOST control chip, a boost circuit, and a second output circuit connected in sequence; The boost circuit includes an inductor L2, switches Q4 and Q5, and an energy storage capacitor C2; The positive output terminal of the rectifier circuit, the inductor L2, the switch Q5, the energy storage capacitor C2, and the negative output terminal of the rectifier circuit are connected in series; The switches Q4, Q5, and the energy storage capacitor C2 are connected in series; The switch Q4 is connected to the negative output terminal; The second output circuit includes an output control switch Q6; The energy storage capacitor C2, the output control switch Q6, and the load are connected in series; The negative electrodes of the energy storage capacitor C2 and the load are connected to the negative output terminal; The BOOST control chip is communicatively connected to the energy storage capacitor C2 to be able to collect the input voltage of the energy storage capacitor C2; and the BOOST control chip is electrically connected to the switches Q4 and Q5 to be able to control the opening and closing of the switches Q4 and Q5 according to the input voltage of the energy storage capacitor C2.

8. The power generation device according to claim 7, characterized in that, The output capacity control device is connected between the rectifier circuit and the load.

9. The power generation device according to claim 1, characterized in that, The output capacity control device is an output conversion IC chip; the output conversion IC chip includes a BUCK buck circuit and a PD fast charging circuit connected to each other.

10. The power generation device according to claim 1, wherein The power generation component is a disc-type micro motor.

11. The power generation device according to claim 1, wherein The transmission component is a bicycle gear disc.

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