Power generation device, watchband, and smartwatch

Abstract

The application provides a power generation device, a watchband and a smart watch. The power generation device comprises a containing cavity, an elastic member, a magnetic member, at least one set of power generation members and a rectifying member. The magnetic member is arranged in the containing cavity and is elastically connected to one end of the containing cavity through the elastic member and elastically connected to the other end of the containing cavity through the elastic member. The at least one set of power generation members acts on the containing cavity and the magnetic member. The rectifying member is electrically connected to the at least one set of power generation members. When the magnetic member moves along the direction of the central axis of the containing cavity under the action of its own gravity and / or the elastic force of the elastic member, an electric current is generated on the at least one set of power generation members through the interaction between the magnetic member and the at least one set of power generation members. The electric current is converted into direct current by the rectifying member and then output to supply power to an electric device. Through the application, the flexibility of supplying power to the electric device can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to terminal technology, and in particular to a power generation device, a watchband and a smart watch. BACKGROUND

[0002] The smart watch is a watch with information processing capability and meeting the basic technical requirements of the watch. In addition to displaying time, the smart watch has functions such as Bluetooth synchronization with a mobile phone to make a call, send and receive a message, monitor sleep, monitor heart rate, long sitting reminder, running step recording, remote photographing, music playing, video recording, compass, etc. The smart watch has high intelligence.

[0003] Due to the large number of functions of the smart watch, the power consumption is large, and the normal use time is only 1-2 days. The endurance is one of the current bottlenecks of the smart watch. In many scenarios, insufficient endurance will bring great inconvenience.

[0004] At present, there are watches charged by a charger and solar power generation watches on the market. Most of the solar power generation watches are ordinary electronic watches, and the functions are relatively simple. At present, the smart watch has many functions, so the main board needs more space, and it is difficult to place the solar power generation module in the limited space. At the same time, the solar power generation is affected by weather and season, and is not suitable for the smart watch which is a wearable device with large power consumption. That is, the power supply mode of the smart watch in the related art is relatively single. SUMMARY

[0005] The embodiments of the present application provide a power generation device, a watchband and a smart watch, provide a new power supply mode, and can improve the flexibility of power supply for a power consumption device.

[0006] The technical scheme of the embodiments of the present application is as follows:

[0007] The embodiments of the present application provide a power generation device, which comprises a containing cavity, an elastic member, a magnetic member, at least one set of power generation members and a rectifying member. The magnetic member is arranged in the containing cavity. One end of the magnetic member is elastically connected to one end of the containing cavity through the elastic member, and the other end of the magnetic member is elastically connected to the other end of the containing cavity through the elastic member. The at least one set of power generation members acts on the containing cavity and the magnetic member. The rectifying member is electrically connected to the at least one set of power generation members. When the magnetic member moves along the direction of the central axis of the containing cavity under the action of its own gravity and / or the elastic force of the elastic member, an electric current is generated on the at least one set of power generation members through the interaction between the magnetic member and the at least one set of power generation members. The electric current is converted into direct current by the rectifying member and then output to supply power to a power consumption device.

[0008] In some embodiments of the present application, the at least one power generation component comprises a coil, the coil is wound outside the accommodating cavity along the direction of the central axis of the accommodating cavity, one end of the coil is electrically connected to one end of the rectifier component, and the other end of the coil is electrically connected to the other end of the rectifier component; when the magnetic component moves along the direction of the central axis of the accommodating cavity under the action of its own gravity and / or the elastic force of the elastic component, the coil cuts the magnetic lines of force formed by the two ends of the magnetic poles of the magnetic component, thereby generating an electric current in the coil.

[0009] In some embodiments of the present application, the at least one power generation component comprises a charged component, a first capacitor plate and a second capacitor plate; the charged component is embedded on the magnetic component; the charged component provides a fixed amount of electric charge; the first capacitor plate is arranged on the magnetic component, and the second capacitor plate is arranged in the accommodating cavity; the charged component is electrically connected to the first capacitor plate; the rectifier component is electrically connected to the second capacitor plate, and the first capacitor plate and the second capacitor plate together form a first variable capacitor and a second variable capacitor with a plate distance and electric charge; when the magnetic component moves along the direction of the central axis of the accommodating cavity under the action of its own gravity and / or the elastic force of the elastic component, the plate distance changes, resulting in charge transfer between the first variable capacitor and the second variable capacitor, thereby generating an electric current in the first variable capacitor and the second variable capacitor.

[0010] In some embodiments of the present application, the first capacitor plate is arranged at the two magnetic pole ends of the magnetic component respectively; the second capacitor plate is arranged at the two ends of the accommodating cavity respectively; the first capacitor plate and the second capacitor plate are arranged oppositely; one end of the charged component is electrically connected to the first capacitor plate arranged at one magnetic pole end, and the other end of the charged component is electrically connected to the first capacitor plate arranged at the other magnetic pole end; one end of the rectifier component is electrically connected to the second capacitor plate arranged at one end of the accommodating cavity, and the other end of the rectifier component is electrically connected to the second capacitor plate arranged at the other end of the accommodating cavity.

[0011] In some embodiments of the present application, the first variable capacitor has a first plate distance, and the second variable capacitor has a second plate distance; the first plate distance and the second plate distance are negatively correlated; when the magnetic member moves along the central axis of the accommodating cavity under the action of its own gravity and / or the elastic force of the elastic member, the first plate distance decreases and the second plate distance increases, the first capacitance value of the first variable capacitor increases, the second capacitance value of the second variable capacitor decreases, resulting in the transfer of electric charge on the second variable capacitor to the first variable capacitor, generating current on the first variable capacitor and the second variable capacitor; when the magnetic member moves along the central axis of the accommodating cavity under the action of its own gravity and / or the elastic force of the elastic member, the first plate distance increases and the second plate distance decreases, the first capacitance value decreases, and the second capacitance value increases, resulting in the transfer of electric charge on the first variable capacitor to the second variable capacitor, generating current on the first variable capacitor and the second variable capacitor.

[0012] In some embodiments of the present application, the charged component includes a first electrode plate, a second electrode plate, and a dielectric material; the first electrode plate and the second electrode plate are oppositely arranged; the dielectric material is arranged on the opposite side of the first electrode plate and the second electrode plate; and the first electrode plate and the second electrode plate are electrically connected with the first capacitor plate.

[0013] Embodiments of the present application provide a watchband, which includes a power-consuming device and the above-mentioned power generation device; the power-consuming device is electrically connected with the power generation device, and the power generation device is used to supply power for the power-consuming device.

[0014] In some embodiments of the present application, the watchband includes a plurality of watch links; the plurality of watch links are components of the watchband; the power generation device is arranged in at least one of the plurality of watch links, and the power generation devices in the at least one watch link are connected in series or in parallel with each other.

[0015] In some embodiments of the present application, the at least one watch link further includes a flexible battery; the flexible battery is connected in series with the power generation device, and is used to store the current generated by the power generation device.

[0016] Embodiments of the present application provide a smart watch, which includes an electronic watch and the above-mentioned watchband; the watchband is detachably electrically connected with the electronic watch, and the watchband is used to supply power for the electronic watch.

[0017] The embodiment of the present application has the following beneficial effects: since each end of the magnetic member is elastically connected to a corresponding end of the accommodating cavity through the elastic member, the at least one group of power generation members act on the accommodating cavity and the magnetic member and are connected to the rectifying member, and when the magnetic member moves along the direction of the central axis of the accommodating cavity under the action of its own gravity and / or the elastic force of the elastic member, an electric current is generated on the at least one group of power generation members through the interaction between the magnetic member and the at least one group of power generation members, and the generated electric current is converted into direct current by the rectifying member to be output to the power consumption device, so that the conversion between kinetic energy and elastic potential and electric energy can be realized in the process of movement of the magnetic member, thereby generating electric energy at any time and anywhere when the power generation device moves to supply power to other power consumption devices, compared with the existing charger power supply and solar power generation, a new power supply mode is provided, and the flexibility of power supply to the power consumption device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a partial structure schematic diagram of an example power generation device provided by the embodiment of the present application;

[0019] Figure 2 is a schematic diagram of the first and second capacitor plates having opposite effective areas provided by the embodiment of the present application;

[0020] Figure 3 is an example of an optional structure schematic diagram of a power generation device provided by the embodiment of the present application;

[0021] Figure 4 is a structure schematic diagram of an example charged assembly provided by the embodiment of the present application;

[0022] Figure 5 is an example of a power generation principle schematic diagram of a first and second variable capacitor provided by the embodiment of the present application;

[0023] Figure 6 is an example of an optional structure schematic diagram of a power generation device provided by the embodiment of the present application;

[0024] Figure 7 is an example of an optional structure schematic diagram of a power generation device provided by the embodiment of the present application;

[0025] Figure 8 is an example of an optional structure schematic diagram of a power generation device provided by the embodiment of the present application;

[0026] Figure 9 is an example of an optional structure schematic diagram of a power generation device provided by the embodiment of the present application;

[0027] Figure 10 is a structure schematic diagram of a watchband provided by the embodiment of the present application;

[0028] Figure 11 is a structural schematic diagram of multiple table sections provided by an embodiment of the present application;

[0029] Figure 12 is an optional structural schematic diagram of a smart watch provided by an embodiment of the present application. DETAILED DESCRIPTION

[0030] In order to make the purposes, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings, and the described embodiments should not be regarded as limiting the present application, and all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0031] In the following description, "some embodiments" are related to a subset of all possible embodiments, but it can be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0032] In the following description, the terms "first\second\third" are only to distinguish similar objects, and do not represent a specific order of the objects, and it can be understood that "first\second\third" can be interchanged in a specific order or sequence as allowed, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used herein are only for the purpose of describing the embodiments of the present application, and are not intended to limit the present application.

[0034] Before the embodiments of the present application are further described in detail, the terms and phrases involved in the embodiments of the present application are explained, and the terms and phrases involved in the embodiments of the present application are applicable to the following explanations.

[0035] 1) Permanent magnet: refers to a magnet that can retain a high residual magnetism in an open circuit state, such as natural magnetite (magnetite) and artificial magnet (aluminum-nickel-cobalt alloy) and the like; permanent magnet is also called hard magnet, which is not easy to lose magnetism and is not easy to be magnetized.

[0036] 2) Electret: a dielectric that can maintain polarization intensity for a long time after polarization is called electret, also called permanent electric body, which can provide a fixed amount of positive or negative charge.

[0037] 3) Variable capacitor: a capacitor whose capacitance can be adjusted within a certain range, and the capacitance changes accordingly by changing the relative effective area between the plates or the distance between the plates.

[0038] At present, smart watches are a kind of electronic products commonly used by people. Because the smart watches have many functions and large power consumption, the normal use time is only 1-2 days, and the endurance is one of the current bottlenecks of the smart watches. In many scenarios, the insufficient endurance will bring great inconvenience. At present, there are watches charged by chargers and solar power generation watches on the market. Most of the solar power generation watches are ordinary electronic watches, and the functions are relatively simple. At present, the smart watches have many functions, and therefore, the main board needs more space, and it is difficult to place the solar power generation module in the limited space. At the same time, the solar power generation is affected by the weather and seasons, and it is not suitable for the wearable device such as the smart watch with large power consumption. In addition, for the smart watch, the charging device and the charging line of the power-consuming components such as the watchband are relatively small due to the small size, and the power consumption of the power-consuming components such as the watchband is not large, and the charging device and the charging line of the power-consuming components such as the watchband are not needed for a long time, so the extra device is wasted for a long time, and it is easy to cause loss and other problems.

[0039] The embodiment of the present application provides a power generation device, a watchband and a smart watch, which can increase a new power supply mode and improve the flexibility of power supply for power-consuming devices. The power generation device provided by the embodiment of the present application can be arranged in wearable devices (for example, a smart watchband, a smart watch, a sports bracelet, a Bluetooth earphone, AR glasses and the like), and can also be arranged in various types of user terminals (for example, a mobile phone, a portable music player, a personal digital assistant, a dedicated message device, a portable game device) to supply power.

[0040] Referring to Figure 1 , Figure 1 is a partial structure schematic diagram of an example power generation device provided by the embodiment of the present application. As shown in Figure 1 , the power generation device comprises a containing cavity 1, elastic members 2 (for example, elastic members 2a and 2b), a magnetic member 3, at least one set of power generation members (not shown in the figure) and a rectifying member (not shown in the figure). The magnetic member 3 is arranged in the containing cavity 1, one end of the magnetic member 3 is elastically connected to one end of the containing cavity 1 through the elastic member 2a, and the other end of the magnetic member 3 is elastically connected to the other end of the containing cavity 1 through the elastic member 2b. The at least one set of power generation members acts on the containing cavity 1 and the magnetic member 3, and is electrically connected to the rectifying member through a wire. When the magnetic member 3 moves along the direction of the central axis x of the containing cavity 1 under the action of its own gravity and / or the elastic force of the elastic member 2, an electric current is generated on the at least one set of power generation members through the interaction between the magnetic member 3 and the at least one set of power generation members, and the generated electric current is converted into direct current by the rectifying member and then output, so as to supply power to the power-consuming device.

[0041] In some embodiments of the present application, the containing cavity 1 can be a regular-shaped cavity, for example Figure 1The internal hollow cuboid shown can also be an irregular cavity, and embodiments of the present application do not limit this. The magnetic member 3 can be a permanent magnet having N and S poles, for example, Figure 1 The number of magnetic members 3 can be one or multiple, and embodiments of the present application do not limit this; when the number of magnetic members 3 is multiple, due to the attractive force of the magnetic poles between the magnetic members, the multiple magnetic members are substantially equivalent to a magnetic member with a larger volume.

[0042] In some embodiments of the present application, the elastic member can be a spring or other object with elastic force, and embodiments of the present application do not limit this. Here, the magnetic member 3 is suspended inside the accommodating cavity 1, and is not fixed by other components except for the elastic connection with the accommodating cavity 1 by the elastic member 2. When the accommodating cavity 1 moves, the magnetic member 3 arranged inside the accommodating cavity 1 moves in the direction of the central axis x under the action of its own gravity, and after moving to a certain distance, continues to move in the opposite direction under the action of the elastic force of the elastic members 2a and 2b, thereby performing reciprocating motion in the direction of the central axis x all the time, and interacting with the at least one group of power generation members during the movement, until the reciprocating motion of the magnetic member 3 gradually stops, and the interaction between the magnetic member 3 and the at least one group of power generation members stops.

[0043] In some embodiments of the present application, when the magnetic member 3 moves in the direction of the central axis x of the accommodating cavity 1 under the action of its own gravity and / or the elastic force of the elastic member 2, due to the reciprocating motion of the magnetic member 3 in the direction of the central axis x all the time, the direction of the current generated on the at least one group of power generation members also changes with the direction of the movement of the magnetic member 3 during the interaction between the magnetic member 3 and the at least one group of power generation members. Therefore, the electrical connection between the at least one group of power generation members and the rectifying member can convert the different direction currents generated in the at least one group of power generation members into direct current with the same direction through the rectifying member, to be directly output to the power consumption device for power supply.

[0044] In some embodiments of the present application, the rectifying member can be a one-way diode, or an integrated rectifying circuit, etc., as long as it can convert alternating current into one-way direct current, and embodiments of the present application do not limit this.

[0045] In some embodiments of the present application, the at least one power generation component can include a charged component, a first capacitor plate and a second capacitor plate. The charged component is embedded in the magnetic component 3 and is configured to provide a fixed amount of electric charge. The first capacitor plate is also disposed on the magnetic component 3, and the second capacitor plate is disposed in the accommodating cavity 1. The charged component and the first capacitor plate are electrically connected by a wire. The rectifier component and the second capacitor plate are electrically connected by a wire. The first capacitor plate and the second capacitor plate together form a first variable capacitor and a second variable capacitor having a plate distance and a certain amount of electric charge. When the magnetic component 3 moves along the central axis of the accommodating cavity 1 under the action of its own gravity and / or the elastic force of the elastic component 2, the plate distance of the first variable capacitor and the second variable capacitor changes, resulting in a transfer of electric charge between the first variable capacitor and the second variable capacitor, thereby generating an electric current in the first variable capacitor and the second variable capacitor.

[0046] Here, the charged component can be an electret, which is configured to provide a fixed amount of positive or negative electric charge. The electret can be embedded or fixed by a fixing component at any position inside or outside the magnetic component 3, which is not limited in the embodiments of the present application.

[0047] Here, the number of the first capacitor plate and the second capacitor plate can be arbitrarily set, as long as the first capacitor plate and the second capacitor plate have a relative effective area to form the first variable capacitor and the second variable capacitor. For example, as shown in Figure 2 the first capacitor plate 42 and the second capacitor plate 43 have a relative effective area y.

[0048] Here, the amount of electric charge carried by the first variable capacitor and the second variable capacitor can be the same or different, which is not limited in the embodiments of the present application.

[0049] In some embodiments, Figure 3 is an optional structural schematic diagram of an exemplary power generation device provided by the embodiments of the present application, Figure 3 exemplarily shows the first capacitor plates 42a and 42b, and the second capacitor plates 43a and 43b. As shown in Figure 3As shown, the first capacitor plates 42a and 42b are respectively arranged at the two magnetic pole ends of the magnetic member 3; the second capacitor plates 43a and 43b are respectively arranged at the two ends of the accommodating cavity 1, and the first capacitor plate 42a is arranged opposite to the second capacitor plate 43a, and the first capacitor plate 42b is arranged opposite to the second capacitor plate 43b. One end of the charged component 41 is electrically connected to the first capacitor plate 42a through the wire 5, and the other end is electrically connected to the first capacitor plate 42b through the wire 5. One end of the rectifying member 6 is electrically connected to the second capacitor plate 43a through the wire 5, and the other end is electrically connected to the second capacitor plate 43b through the wire 5.

[0050] In some embodiments of the present application, the charged component 41 can be an electret; accordingly, Figure 4 is an exemplary structure diagram of the charged component provided by the embodiments of the present application, as Figure 4 As shown, the charged component 41 comprises a first plate 411, a second plate 412 and a dielectric material 413, the first plate 411 is one end of the charged component 41, and the second plate 412 is the other end of the charged component 41. The first plate 411 is arranged opposite to the second plate 412, the dielectric material 413 is arranged on the side opposite to the first plate 411 and the second plate 412, and the first plate 411 is electrically connected to the first capacitor plate 42a through the wire 5, and the second plate 412 is electrically connected to the first capacitor plate 42b through the wire 5.

[0051] Here, the first plate 411 and the second plate 412 are both capacitor plates. The fixed amount of electric charge provided by the charged component 41 arranged on the magnetic member 3 is affected by the magnetic force of the N pole and the S pole of the magnetic member 3, part of the electric charge is gathered to the N pole end of the magnetic member 3 and distributed on the first capacitor plate 42a and the second capacitor plate 43a of the N pole end, and the other part of the electric charge is gathered to the S pole end of the magnetic member 3 and distributed on the first capacitor plate 42b and the second capacitor plate 43b of the S pole end, so that the first capacitor plate 42a and the second capacitor plate 43a together form a first variable capacitor C1 having a first plate distance d1 and having an electric charge amount Q1, and the first capacitor plate 42b and the second capacitor plate 43b together form a second variable capacitor C2 having a second plate distance d2 and having an electric charge amount Q2. When the magnetic member 3 moves along the direction of the central axis x of the accommodating cavity 1 under the action of its own gravity and / or the elastic force of the elastic member 2, the plate distances d1 and d2 of the first variable capacitor C1 and the second variable capacitor C2 change, resulting in charge transfer between the first variable capacitor C1 and the second variable capacitor C2, thereby generating an electric current on the first variable capacitor C1 and the second variable capacitor C2. That is, according to Figure 3It can be known that the power generation device can adopt a capacitive power generation method to convert mechanical energy into electrical energy to supply power for the power consumption device.

[0052] Exemplarily, Figure 5 is a schematic diagram of a power generation principle of the first variable capacitor C1 and the second variable capacitor C2 provided in the embodiment of the application, wherein R1 and R2 represent the power consumption device or the energy storage device, Q represents the charge provided by the charged component 41, Q1 represents the charge of the first variable capacitor (differential capacitor) C1, Q2 represents the charge of the second variable capacitor (differential capacitor) C2, and the symbol “-” represents that the charge provided by the charged component 41 is a negative charge. Then, for the first variable capacitor C1 and the second variable capacitor C2, Figure 5 According to Gauss theorem, the potential equation at the surface of the dielectric material 413 is:

[0053] ε0E1-ε r ε0E2=σ (1)

[0054] wherein E1 is the electric field intensity inside the air gap k, E2 is the electric field intensity inside the dielectric material 413, δ is the charge density of the equivalent surface of the dielectric material 413, ε r is the relative dielectric constant of the dielectric material 413, and ε0 is the vacuum dielectric constant.

[0055] And, for the first variable capacitor C1 and the second variable capacitor C2, Figure 5 According to Kirchhoff's voltage law, it is known that:

[0056] -V1+V2+i(R1+R2)+l1E1+l2E2=0 (2)

[0057] wherein V1 is the voltage (potential difference) between the two ends of the first variable capacitor C1, V2 is the voltage between the two ends of the second variable capacitor C2, i is the circuit current, l1 is the length of the air gap k, and l2 is the length of the dielectric material. In the embodiment of the application, since the voltage between the two ends of the first variable capacitor C1 and the voltage between the two ends of the second variable capacitor C2 change little during the movement of the magnetic piece 3, it can be considered that V1 is equal to V2. Therefore, when the circuit is in the initial state (i.e., the magnetic piece 3 is in the static state), V1 is equal to V2, and the relationship between V1 and V2, the relationship between Q1, Q2 and Q, and the current i can be represented as follows:

[0058]

[0059] In some embodiments of the present application, the effective areas of the first and second capacitor plates 42 and 43 are equal, and the first and second plate distances d1 and d2 are equal when the magnetic member 3 is in a stationary state in the accommodating cavity 1. Thus, according to the formula for calculating the capacitance of a variable capacitor, the first and second variable capacitors C1 and C2 have equal capacitance values c1 and c2 in the initial state, and the formula for calculating c1 and c2 is as follows:

[0060]

[0061] In some other embodiments of the present application, the effective areas of the first and second capacitor plates 42 and 43 can also be unequal, and the first and second plate distances d1 and d2 can also be equal when the magnetic member 3 is in a stationary state in the accommodating cavity 1. Thus, according to the above formula (4), the first and second variable capacitors C1 and C2 have unequal capacitance values c1 and c2 in the initial state.

[0062] Here, when the first and second variable capacitors C1 and C2 have equal capacitance values and equal voltages across them, and since the relationship between the charge q carried by a variable capacitor and the capacitance c and the voltage u is q = u x c, the first and second variable capacitors C1 and C2 have equal charge amounts Q1 and Q2, and Q1 = Q2 = Q / 2. Thus, according to the formula for calculating the voltage in formula (3) and formula (4), the specific relationship between Q1, Q2, Q, d1 and d2 in the initial state of the circuit is as follows:

[0063]

[0064] In the embodiments of the present application, the first and second plate distances d1 and d2 are negatively correlated, i.e., when the first plate distance d1 increases, the second plate distance d2 decreases, and when the first plate distance d1 decreases, the second plate distance d2 increases. Thus, when the magnetic member 3 moves along the central axis x of the accommodating cavity 1 under the action of its own gravity and / or the elastic force of the elastic member 2, if the first plate distance d1 decreases and the second plate distance d2 increases, the first capacitance value c1 of the first variable capacitor C1 increases, the second capacitance value c2 of the second variable capacitor C2 decreases, causing the charge on the second variable capacitor C2 to transfer to the first variable capacitor C1, and generating a current in the first and second variable capacitors C1 and C2.

[0065] Exemplarily, Figure 6 is a schematic structural diagram of a power generation device provided by an embodiment of the present application, as shown in Figure 6As shown, when the magnetic member 3 moves along the x1 direction under the action of its own gravity and / or the elastic force of the elastic members 2a and 2b, the first plate distance d1 decreases and the second plate distance d2 increases, the first capacitance value c1 of the first variable capacitor C1 increases, the second capacitance value c2 of the second variable capacitor C2 decreases, and the charges on the first and second capacitor plates 42b and 43b (i.e., the second variable capacitor C2) are transferred to the first and second capacitor plates 42a and 43a (i.e., the first variable capacitor C1) through the charged component 41, thereby generating a current i1 on the first and second variable capacitors C1 and C2 when the charges are negative charges.

[0066] In the embodiment of the present application, when the magnetic member 3 moves along the central axis x of the accommodating cavity 1 under the action of its own gravity and / or the elastic force of the elastic members 2a and 2b, the first plate distance d1 increases and the second plate distance d2 decreases, the first capacitance value c1 of the first variable capacitor C1 decreases, the second capacitance value c2 of the second variable capacitor C2 increases, and the charges on the first variable capacitor C1 are transferred to the second variable capacitor C2, thereby generating a current on the first and second variable capacitors C1 and C2.

[0067] Exemplarily, Figure 7 is an optional structural schematic diagram of the power generation device provided by the embodiment of the present application, as shown in Figure 7 As shown, when the magnetic member 3 moves along the x2 direction under the action of its own gravity and / or the elastic force of the elastic members 2a and 2b, the first plate distance d1 increases and the second plate distance d2 decreases, the first capacitance value c1 of the first variable capacitor C1 decreases, the second capacitance value c2 of the second variable capacitor C2 increases, and the charges on the first and second capacitor plates 42a and 43a (i.e., the first variable capacitor C1) are transferred to the first and second capacitor plates 42b and 43b (i.e., the second variable capacitor C2) through the charged component 41, thereby generating a current i2 on the first and second variable capacitors C1 and C2 when the charges are negative charges.

[0068] In the embodiments of the present application, when the user wears the device provided with the power generation device to move, when the magnetic member 3 moves in a certain direction under the action of its own gravity at first, and then reciprocates under the action of the pulling force and resistance of the elastic member 2, the distances d1 and d2 between the plates of the variable capacitors C1 and C2 change accordingly. When the capacitance value of a certain capacitor changes by Δc, the charge will be redistributed on the two variable capacitors C1 and C2. Since the amount of charge provided by the charged assembly 41 is fixed, the charge will be transferred between the two capacitors C1 and C2, so that the electrons will flow in the loop in which the two capacitors C1 and C2 are located, thereby generating current. For example, when the charge on the first capacitor C1 increases to Q1+ΔQ, the capacitance value of the first capacitor C1 is c1+Δc, and the capacitance value of the second capacitor C2 is c2-Δc, the charge on the second capacitor C2 is Q2-ΔQ. Figure 5 When the charge on the first capacitor C1 increases to , the amount of charge increase is ΔQ, which comes from the second variable capacitor C2, that is, the charge ΔQ is transferred from the first capacitor C1 to the second variable capacitor C2 through the loop composed of the loads R1 and R2, thereby supplying power to the loads R1 and R2. The power P of the load is: where R is the sum of R1 and R2, and c is the capacitance value of the first variable capacitor C1 and the second variable capacitor C2 at the initial time of the circuit. According to the above content, Q, R and c are all fixed values, so the power P generated by the power generation device is positively correlated with (dt represents the change in time), and the factor affecting the change in capacitance value dc is the distance between the plates of the first variable capacitor C1 and the second variable capacitor C2. Since the distance between the plates is affected by the Hook's law of the elastic member and the amplitude of motion, when the elastic member is determined, the more intense the motion of the magnetic member 3, the larger (Δd represents the change in distance between the plates), which leads to , so P is larger, that is, the power generation device generates more power. That is, the power generated by the power generation device in the embodiments of the present application is proportional to the intensity of the motion, and the power generation amount can be flexibly adjusted.

[0069] In some embodiments of the present application, at least one set of power generation members includes a coil 44. For example, Figure 8 is a schematic structural diagram of the power generation device provided by the embodiments of the present application. As Figure 8 shown, the coil 44 is wound around the outside of the accommodation cavity 1 along the direction of the central axis x of the accommodation cavity 1, and one end of the coil 44 is electrically connected to one end of the rectifying member 6 through the wire 5, and the other end is electrically connected to the other end of the rectifying member 6 through the wire 5. When the magnetic member 3 moves along the central axis x of the accommodation cavity 1 under the action of its own gravity and / or the elastic force of the elastic members 2a and 2b, the coil 44 cuts the magnetic lines of force formed at the two ends of the magnetic poles of the magnetic member 3, and an electric current is formed on the coil 44.

[0070] Here, the coil 44 is fixedly arranged outside the accommodating cavity 1, and the coil 44 is closed; the N-pole and S-pole of the magnetic member 3 form magnetic field lines. According to the principle of electromagnetic induction, when the magnetic field lines and the closed conductor move relative to each other in the magnetic field, the closed conductor will induce an electromotive force, thereby generating an electric current, that is, generating electric energy. Therefore, through the structure in Figure 8 , when the power generation device moves under an external force, the magnetic member will reciprocate along the central axis of the accommodating cavity 1 under the joint action of the gravitational potential energy of the magnetic member itself and the elastic potential energy of the elastic member. At this time, the static coil 44 moves relative to the magnetic member 3, which is equivalent to the coil 44 cutting the magnetic induction lines, so that an electromotive force E is generated in the coil 44. Since the coil 44 is closed, an electric current is generated in the coil 44. Since the magnetic member reciprocates along the central axis of the accommodating cavity 1, the direction of cutting the magnetic induction lines is opposite, and thus the direction of the generated electric current is also opposite. Therefore, by configuring a rectifying member at both ends of the coil 44, the output electric current can be rectified into unidirectional direct current, so as to directly supply power to the power consumption device. That is, according to Figure 8 , the power generation device can convert mechanical energy into electric energy by using the electromagnetic induction method, so as to supply power to the power consumption device.

[0071] In some embodiments of the present application, the at least one group of power generation members can further include a coil 44, a charged component 41, a first capacitor plate 42, and a second capacitor plate 43. An exemplary Figure 9 is an optional structural schematic diagram of the power generation device provided by the embodiments of the present application, which exemplarily shows the first capacitor plates 42a and 42b, and the second capacitor plates 43a and 43b. The power generation device in Figure 9 can simultaneously realize capacitive power generation and electromagnetic induction power generation, so as to have higher power generation efficiency and better supply power to the power consumption device.

[0072] The embodiments of the present application further provide a watchband, which is exemplarily shown in Figure 10 . The watchband 70 includes a power consumption device and the power generation device (neither of which is shown in Figure 10 ), wherein the power consumption device is electrically connected with the power generation device, and the power generation device is used to supply power to the power consumption device. Here, the power consumption device in the watchband can be a battery or a working circuit in the watchband, or other components in the watchband that need to consume power, and the embodiments of the present application do not limit this.

[0073] In some embodiments of the present application, as Figure 11As shown, the watchband 70 can include a plurality of watch links 700 (exemplarily shown as watch links 700a, 700b and 700c); wherein the watch links 700 are components of the watchband; the power generation devices are arranged in at least one of the plurality of watch links (for example, the watch links 700a and 700b), and the power generation devices in the at least one of the plurality of watch links are connected in series or in parallel with each other.

[0074] In some embodiments, since the watchband 70 is composed of a plurality of watch links 700, and the space required by the working circuit in the watchband 70 is small, the idle available space of the watchband 70 is large, and therefore, the power generation devices can be integrated into micro power generation devices and placed in the watch links 700, and the plurality of micro power generation devices are connected in series or in parallel with each other, so as to generate electric energy for the watchband 70 or other external devices. In some embodiments of the present application, the power generation devices can be arranged in each of the watch links 700, so as to generate more electric energy; in other embodiments of the present application, the power generation devices can also be arranged in part of the watch links 700, and the embodiments of the present application are not limited in this regard.

[0075] In some embodiments of the present application, at least one of the watch links further includes a flexible battery; the flexible battery is connected in series with the power generation device, and is used to store the electric current generated by the power generation device. Here, the flexible battery is embedded in the internal unit of the watchband, and is connected in series with the power generation device, so that the flexible battery can be charged to store electric energy while the power generation device is moved by external force, and then the corresponding power consumption device can be charged by the flexible battery.

[0076] In the embodiments of the present application, when the user wears the watchband to run or walk or performs other activities with swinging arm actions, the power generation devices in the watchband can repeatedly utilize the idle mechanical energy to convert it into electric energy and collect and store the electric energy, and the collected electric energy can be directly supplied to other power consumption devices in the watchband to supply power, so as to realize self-power supply of the health watchband, and increase the endurance of the watchband; and compared with the existing charger power supply and solar power generation, a new watchband power supply mode is provided, the flexibility of power supply for the watchband is improved, and self-power supply of the watchband is realized.

[0077] In the embodiments of the present application, an intelligent watch 7 is further provided, which is exemplarily shown as Figure 12As shown, the smart watch 7 comprises the above-mentioned watch band 70 and the electronic watch dial 71; the watch band 70 and the electronic watch dial 71 are detachably electrically connected, and the watch band 70 is used to supply power for the electronic watch dial 71. In some embodiments of the present application, the clamping part of the electronic watch dial 71 and the watch band 70 can be provided with mutually matched power supply components, such as power supply interfaces, so that after the electronic watch dial 71 and the watch band 70 are clamped, the power supply components are in contact with each other, and then the electric energy generated by the power generation device inside the watch band 70 can be transmitted to the electronic watch dial 71 through the contacting power supply components, for use by the electronic watch dial 71.

[0078] Here, the detachable electrical connection of the electronic watch dial 71 and the watch band 70 can make the watch band 70 of the smart watch be removed and replaced, so that when the watch band 70 further comprises a rechargeable battery (the above-mentioned flexible battery), the watch band 70 can be used as a portable power supply of the smart watch. When the user wears the smart watch during exercise, for example, has a swinging arm action, the power generation device in the watch band 70 can convert mechanical energy into electric energy and charge the rechargeable battery in the watch band 70, when the smart watch is low on power, the watch band with depleted power is removed, the watch band with full power is replaced, and the watch band with depleted power is re-worn to charge the watch band, which remedies the defect of insufficient endurance of the smart watch, increases the endurance of the smart watch, and greatly reduces the dependence of the smart watch on the charger, saving the cost of the battery; and compared with the existing charger power supply and solar power generation, a new power supply mode for the smart watch is provided, the flexibility of power supply for the smart watch is improved, and self-power supply of the smart watch is realized.

[0079] In summary, through the embodiment of the present application, the conversion between kinetic energy and elastic potential and electric energy can be realized in the process of the movement of the magnetic part in the power generation device, so that electric energy can be generated at any time and anywhere when the power generation device moves, to supply power to other electric devices. Compared with the existing charger power supply and solar power generation, a new power supply mode is provided, and the flexibility of power supply for electric devices is improved. When the user wears the watchband to run or walk and other activities with arm swinging actions, the power generation device in the watchband can repeatedly utilize the idle mechanical energy to convert it into electric energy and collect and store it, and can directly supply the collected electric energy to other electric devices in the watchband to supply power, thereby realizing the self-power supply of the health watchband and increasing the endurance of the watchband. Compared with the existing charger power supply and solar power generation, a new watchband power supply mode is provided, and the flexibility of power supply for the watchband is improved, thereby realizing the self-power supply of the watchband. When the smart watch is insufficient in electric quantity, the watchband with depleted electric energy can be detached, and the watchband with full electric energy is replaced, and the watchband with depleted electric energy is worn again to charge the watchband, thereby making up for the defect of insufficient endurance of the smart watch, increasing the endurance of the smart watch, greatly reducing the dependence of the smart watch on the charger, saving the battery cost, improving the flexibility of power supply for the smart watch, and realizing the self-power supply of the smart watch.

[0080] The above merely describes the embodiments of the present application, but is not used to limit the protection scope of the present application. Any modification, equivalent replacement and improvement within the spirit and scope of the present application shall be included in the protection scope of the present application.

Claims

1. A power generation device characterized by comprising: The power generation device comprises: a containing cavity, an elastic member, a magnetic member, at least one set of power generation members and a rectifying member; the magnetic member is placed in the containing cavity, one end of the magnetic member is elastically connected with one end of the containing cavity through the elastic member, and the other end of the magnetic member is elastically connected with the other end of the containing cavity through the elastic member; the at least one set of power generation members acts on the containing cavity and the magnetic member; the rectifying member is electrically connected with the at least one set of power generation members; when the magnetic member moves along the direction of the central axis of the containing cavity under the action of its own gravity and / or the elastic force of the elastic member, an electric current is generated on the at least one set of power generation members through the interaction between the magnetic member and the at least one set of power generation members, and the electric current is converted into direct current by the rectifying member and then output to supply power to a power consumption device; the at least one set of power generation members comprises a first capacitor plate and a second capacitor plate; the first capacitor plate and the second capacitor plate jointly form a first variable capacitor and a second variable capacitor with a plate distance and with electric charges; the first variable capacitor has a first plate distance, and the second variable capacitor has a second plate distance; the first plate distance is negatively correlated with the second plate distance; when the magnetic member moves along the direction of the central axis of the containing cavity under the action of its own gravity and / or the elastic force of the elastic member, the first plate distance decreases, and the second plate distance increases, the first capacitance value of the first variable capacitor increases, the second capacitance value of the second variable capacitor decreases, the electric charges on the second variable capacitor are transferred to the first variable capacitor, and an electric current is generated on the first variable capacitor and the second variable capacitor; when the magnetic member moves along the direction of the central axis of the containing cavity under the action of its own gravity and / or the elastic force of the elastic member, the first plate distance increases, and the second plate distance decreases, the first capacitance value decreases, the second capacitance value increases, the electric charges on the first variable capacitor are transferred to the second variable capacitor, and an electric current is generated on the first variable capacitor and the second variable capacitor.

2. The power generation device according to claim 1, wherein the at least one set of power generation members comprises a coil; the coil is wound outside the containing cavity along the direction of the central axis of the containing cavity; one end of the coil is electrically connected with one end of the rectifying member, and the other end of the coil is electrically connected with the other end of the rectifying member; when the magnetic member moves along the direction of the central axis of the containing cavity under the action of its own gravity and / or the elastic force of the elastic member, the coil cuts the magnetic induction lines formed by the two ends of the magnetic poles of the magnetic member, and an electric current is formed on the coil.

3. The power generation device according to claim 1 or 2, wherein the at least one set of power generation members comprises a charged component; the charged component is inlaid on the magnetic member; the charged component provides a fixed amount of electric charges. The first capacitor plate is arranged on the magnetic member, and the second capacitor plate is arranged in the accommodating cavity; the charged component is electrically connected with the first capacitor plate; and the rectifying member is electrically connected with the second capacitor plate.

4. The power generation device according to claim 3, characterized in that, The first capacitor plate is arranged at two magnetic pole ends of the magnetic member respectively, and the second capacitor plate is arranged at two ends of the accommodating cavity respectively; and the first capacitor plate is oppositely arranged with the second capacitor plate. One end of the charged component is electrically connected with the first capacitor plate arranged at one magnetic pole end, and the other end of the charged component is electrically connected with the first capacitor plate arranged at the other magnetic pole end; one end of the rectifying member is electrically connected with the second capacitor plate arranged at one end of the accommodating cavity, and the other end of the rectifying member is electrically connected with the second capacitor plate arranged at the other end of the accommodating cavity.

5. The power generation device of claim 3, wherein The charged component comprises a first plate, a second plate and a dielectric material; The first plate is oppositely arranged with the second plate; The dielectric material is arranged on the opposite side of the first plate and the second plate; and the first plate and the second plate are electrically connected with the first capacitor plate.

6. A watchband, characterized by Comprise: An electric device and the power generation device according to any one of claims 1-5; the electric device is electrically connected with the power generation device, and the power generation device is used for supplying power for the electric device.

7. The watchband of claim 6, wherein, The watchband comprises a plurality of watch links; the plurality of watch links are components of the watchband; the power generation device is arranged in at least one watch link of the plurality of watch links, and the power generation devices in the at least one watch link are connected in series or in parallel with each other.

8. The watchband of claim 6, wherein, The at least one watch link further comprises a flexible battery; the flexible battery is connected in series with the power generation device, and is used for storing the current generated by the power generation device.

9. A smart watch, characterized by The smart watch comprises an electronic watch and the watchband according to any one of claims 6-8; the watchband is detachably electrically connected with the electronic watch, and the watchband is used for supplying power for the electronic watch.

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