Transduction power supply system and shoes

Abstract

The utility model provides a transduction power supply system and shoes, and relates to the technical field of energy supply. Wherein the transduction power supply system comprises a piezoelectric film transduction unit, a piezoelectric ceramic transduction unit, an electromagnetic transduction unit and an energy storage unit; the piezoelectric film transduction unit, the piezoelectric ceramic transduction unit and the electromagnetic transduction unit are electrically connected with the energy storage unit. The energy storage unit collects a first current generated by the piezoelectric film transduction unit, a second current generated by the piezoelectric ceramic transduction unit and a third current generated by the electromagnetic transduction unit and stores the first current, the second current and the third current as electric energy to be provided for an electricity utilization unit.

Description

TECHNICAL FIELD

[0001] The present specification relates to the technical field of energy supply, and in particular to a transduction power supply system and shoes. BACKGROUND

[0002] With the wide popularity of social intelligence, people have diversified and diversified needs for daily necessities. Therefore, more wearable devices or home devices are endowed with more functions, such as massage cushions, heating floor mats, and positionable shoes. In the prior art, these devices generally use chemical batteries to provide power for them. These batteries have problems such as short service life, large size, and low reliability. In addition, traditional fossil fuels are increasingly depleted and seriously pollute the environment. In order to save energy and reduce emissions, finding new energy has become a top priority for people.

[0003] Environmental energy is extremely abundant, such as sea wave energy, wind energy, solar energy, and mechanical energy. Among them, mechanical energy generated by vibration is very common in daily life, for example, a large amount of energy is released to the external environment during human movement. Specifically, when people walk, lean on a cushion, sit on a cushion, walk on a carpet, etc. will cause vibration and generate mechanical energy. If these energies are utilized, it will help to improve the use rate of clean energy and effectively alleviate environmental pollution and other problems. CONTENT OF THE INVENTION

[0004] In order to capture the vibration mechanical energy in the environment and convert it into electrical energy, in order to improve the use rate of clean energy and effectively alleviate environmental pollution and other problems, some embodiments of the present specification provide a transduction power supply system and shoes.

[0005] One or more embodiments of the present specification provide a transduction power supply system, comprising a piezoelectric film transduction unit, a piezoelectric ceramic transduction unit, an electromagnetic transduction unit and an energy storage unit; the piezoelectric film transduction unit, the piezoelectric ceramic transduction unit and the electromagnetic transduction unit are respectively electrically connected with the energy storage unit, and the energy storage unit collects a first current generated by the piezoelectric film transduction unit, a second current generated by the piezoelectric ceramic transduction unit and a third current generated by the electromagnetic transduction unit and stores them as electrical energy to provide for a power unit.

[0006] According to the power supply system provided by one or more embodiments of the present specification, the piezoelectric ceramic transduction unit comprises a sheet-shaped substrate, a piezoelectric ceramic sheet and an elastic support, the sheet-shaped substrate is arranged at one end of the elastic support, at least one side of the sheet-shaped substrate is attached with the piezoelectric ceramic sheet, and the piezoelectric ceramic sheet is electrically connected to the energy storage unit.

[0007] According to the power supply system provided by one or more embodiments of the present specification, the thickness of the sheet-shaped substrate is 0.01mm-1mm.

[0008] According to one or more embodiments of the present specification, the electromagnetic energy conversion unit comprises a limiting member; the limiting member is a tubular structure, the magnet is movably arranged inside the limiting member along the length direction of the limiting member, and the conductive coil is arranged outside the limiting member.

[0009] According to one or more embodiments of the present specification, the conductive coil is arranged at the end of the limiting member, and the length L1 of the limiting member, the length L2 of the magnet and the length L3 of the conductive coil satisfy the following relationship: L2+L3≤L1 and L2≤L3.

[0010] According to one or more embodiments of the present specification, the energy storage unit comprises a rechargeable battery or a capacitor.

[0011] One or more embodiments of the present specification provide a shoe comprising the aforementioned energy conversion and power supply system, the piezoelectric film energy conversion unit comprises a piezoelectric film, the piezoelectric film is arranged in one or more combinations of the following parts: at least part of the area of the lower layer of the insole, at least part of the area in the insole; the piezoelectric ceramic energy conversion unit is arranged in at least part of the area in the sole; the electromagnetic energy conversion unit is arranged in one or more combinations of the following parts: at least part of the area of the heel of the sole, at least part of the area of the circumference of the sole; the energy storage unit is arranged in at least part of the area in the sole.

[0012] According to one or more embodiments of the present specification, the shoe, the piezoelectric ceramic energy conversion unit comprises a sheet-shaped substrate and an elastic support, the sheet-shaped substrate is arranged at one end of the elastic support, the other end of the elastic support is fixed to the heel of the shoe or the sole, and the elastic support supports the sheet-shaped substrate arranged in the heel.

[0013] According to one or more embodiments of the present specification, the shoe comprises a gait detection unit and a communication module; the communication module is electrically connected to the power supply system, and the power supply system supplies power to the communication module; the gait detection unit comprises an insole-shaped flexible substrate and a plurality of piezoelectric elements, and the plurality of piezoelectric elements are dispersedly arranged on the insole-shaped flexible substrate; the gait detection unit and the communication module have a signal connection, the gait detection signals obtained by the plurality of piezoelectric elements are sent outward through the communication module, and / or the electromagnetic energy conversion unit, the piezoelectric ceramic energy conversion unit and the piezoelectric film energy conversion unit respectively have a signal connection with the communication module, and part of the electric signals output by the electromagnetic energy conversion unit, part of the electric signals output by the piezoelectric ceramic energy conversion unit and part of the electric signals output by the piezoelectric film energy conversion unit are sent outward as gait detection signals through the communication module.

[0014] According to one or more embodiments of the present specification, the shoe further comprises a positioning unit electrically connected to the power supply system, the power supply system supplies power to the positioning unit; the positioning unit has a signal connection with the communication module, and the positioning information output by the positioning unit is sent outward through the communication module; and the communication module comprises a Bluetooth communication module.

[0015] The beneficial effects that may be brought by the embodiments of the present specification include but are not limited to: (1) the vibration mechanical energy generated by the motion in the environment is converted into electric energy by the piezoelectric film transduction unit, which powers the power-consuming unit, improves the reliability of power supply, and achieves the effect of energy saving and emission reduction; (2) the arrangement of electromagnetic, piezoelectric and other transduction units improves the power supply stability and output power of the transduction power supply device; (3) when the transduction power supply system is applied to shoes or shoe soles, the piezoelectric film transduction unit and the gait detection unit adopt a flexible or elastic structure, which further improves the comfort of the user's foot; (4) the transduction power supply device has a simple structure, which effectively saves the space of the shoe sole and improves the integration of the intelligent shoe; (5) in addition to the special gait detection unit, some embodiments of the present specification also utilize the electric signal output by the transduction unit, which enriches the gait detection signal and helps to obtain more accurate gait information of the user. It should be noted that different embodiments may have different beneficial effects, and in different embodiments, the beneficial effects that may be produced can be any one or a combination of the above, or any other beneficial effects that can be obtained. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present specification will be further illustrated in the form of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. The same reference numbers in the drawings represent the same structures or steps.

[0017] Figure 1 is a schematic diagram of a transduction power supply system according to some embodiments of the present specification.

[0018] Figure 2 is a schematic diagram of a piezoelectric film transduction unit according to some embodiments of the present specification.

[0019] Figure 3 is a schematic diagram of a piezoelectric ceramic transduction unit according to some embodiments of the present specification.

[0020] Figure 4 is a schematic diagram of a piezoelectric ceramic transduction unit according to some embodiments of the present specification.

[0021] Figure 5 is a schematic diagram of an electromagnetic transduction unit according to some embodiments of the present specification.

[0022] Figure 6 isFigure 5 Schematic diagram of internal structure of middle limiting member.

[0023] Figure 7 Circuit schematic diagram of transduction power supply system according to some embodiments of the present specification.

[0024] Figure 8 Schematic diagram of installation of transduction power supply system applied to shoes or shoe soles according to some embodiments of the present specification.

[0025] Figure 9 Schematic diagram of structure of gait detection unit according to some embodiments of the present specification.

[0026] Figure 10 Schematic diagram of assembly of shoe sole according to some embodiments of the present specification.

[0027] Figure 11 Schematic diagram of shoe according to some embodiments of the present specification.

[0028] In the figure, 1 is a piezoelectric transduction unit; 11 is a piezoelectric thin film transduction unit; 12A, 12B are piezoelectric ceramic transduction units; 121, 124 are piezoelectric ceramic sheets; 122, 125 are sheet-like substrates; 123 is an elastic support; 2 is an electromagnetic transduction unit; 21 is a conductive coil; 22 is a limiting member; 23 is a magnet; 3 is an energy storage unit; 4 is a communication module; 5 is a positioning unit; 6 is an insole; 7 is a gait detection unit; 71 is a piezoelectric element; 72 is a flexible substrate; 8 is a shoe; 9 is an external device. DETAILED DESCRIPTION

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present specification, the embodiments will be described in detail below with reference to the drawings. Obviously, the following description is some examples or embodiments of the present specification, and those skilled in the art can also apply the technical solutions or means disclosed in the present specification to other scenarios without creative labor, under the premise of not deviating from the principles of the present specification.

[0030] It should be understood that the "system", "device", "unit" and / or "module" used in the present specification is a method for distinguishing different components, elements, parts, portions or assemblies at different levels. However, if other words can achieve the same purpose, the words can be replaced by other expressions.

[0031] Unless otherwise specified, the technical terms of components, elements, etc. described in the present specification do not refer to a single number, but can also include a plurality. Generally speaking, the terms "include", "contain" and the like only indicate the inclusion of the steps, elements or components explicitly identified, and these steps, elements and components do not constitute an exclusive list, and the method or device described can also include other steps or components.

[0032] Environmental energy sources are extremely abundant, such as wave energy, wind energy, solar energy, and mechanical energy. Among these, mechanical energy generated by vibration is very common in daily life. For example, the human body releases a large amount of energy into the external environment during movement. Specifically, walking, leaning against a cushion, sitting on a seat, or walking on a carpet all cause vibrations that generate mechanical energy. Utilizing this energy can help improve the use of clean energy and effectively alleviate environmental pollution problems.

[0033] Therefore, some embodiments of this specification propose a transducer power supply system designed to capture the vibrational mechanical energy generated by motion in the environment and convert it into electrical energy to power the power-consuming unit.

[0034] Example 1

[0035] Figure 1 This is a schematic diagram of a transducer power supply system shown according to some embodiments of this specification, which can supply power to power-consuming units. For example... Figure 1 As shown, the power supply system provided in some embodiments of this specification includes a piezoelectric thin film transducer 11, a piezoelectric ceramic transducer 12, an electromagnetic transducer 2, and an energy storage unit 3.

[0036] When the piezoelectric thin-film transducer 11 deforms due to external force, it can output an electrical signal, such as current, at its two poles. Therefore, the piezoelectric thin-film unit can deform with movement and generate an electrical signal. In some embodiments, the piezoelectric thin-film transducer 11 can be disposed in the sole of a shoe, and the movement of a person can periodically compress the piezoelectric element, thereby continuously generating current. Alternatively, the piezoelectric thin-film transducer 11 can be disposed in a cushion, and when a person leans against the cushion, the piezoelectric element is compressed, causing deformation and thus outputting current. Or, the piezoelectric thin-film transducer 11 can be disposed in a seat cushion, and when a person sits on the cushion, the piezoelectric element is compressed, thus outputting current. Alternatively, the piezoelectric thin-film transducer 11 can be disposed in a carpet, and when a person steps on the carpet, the piezoelectric element is compressed, causing it to output current. Figure 1 As shown, the piezoelectric thin-film transducer 11 is electrically connected to the energy storage unit 3, and the energy storage unit 3 can store the electrical signal generated by the piezoelectric thin-film transducer 11 as electrical energy. The electrical energy in the energy storage unit 3 can supply power to a power-consuming unit, such as a power-consuming unit on a shoe. The aforementioned walking movement can include the actions of lifting and lowering the foot, specifically walking, jumping, running, and other movements.

[0037] Figure 2This is a schematic diagram of the structure of a piezoelectric thin-film transducer unit 11 according to some embodiments of this specification. The piezoelectric thin-film transducer unit 11 includes a piezoelectric thin film, the material of which includes a piezoelectric polymer. The piezoelectric thin-film transducer unit 11 can convert mechanical energy generated by external force into a first current. An energy storage unit 3 is electrically connected to the piezoelectric thin-film transducer unit 11 to collect the first current and store it as electrical energy for use by the power-consuming unit. Compared to traditional piezoelectric ceramics, using a flexible piezoelectric thin film as a piezoelectric element has the characteristic of being less fragile, which can increase the area where the piezoelectric effect is generated, thereby expanding the possible application scenarios of the piezoelectric element. Therefore, a flexible piezoelectric thin film can more efficiently convert mechanical energy generated by vibration into electrical energy, further improving the endurance of the power-consuming unit, or providing power to a higher-power power-consuming unit.

[0038] As an example, the piezoelectric polymer may include one or more combinations of the following materials: PVDF (polyvinylidene fluoride), PVDF-TrFE (a copolymer of vinylidene fluoride and trifluoroethylene), PVDF-TrFE-CFE (vinylidene fluoride-trifluoroethylene-chlorofluoroethylene), etc. In some embodiments, the piezoelectric thin-film transducer 11 may be a flexible piezoelectric element having an insole shape. As an example, the piezoelectric thin-film transducer 11 may be disposed in at least a portion of the lower layer of the insole or encapsulated in at least a portion of the insole. Stepping motion causes the sole to bend, thereby causing the piezoelectric thin-film transducer 11 to output a first current. In some alternative embodiments, the piezoelectric thin-film transducer 11 may also be disposed in at least a portion of the inner side of the cushion cover or the seat cover. When the cushion or seat is squeezed by an external force, causing the cushion cover or seat cover to bend, the piezoelectric thin-film transducer 11 outputs a first current. Alternatively, in some other optional embodiments, the piezoelectric thin film transducer 11 may also be disposed inside the carpet, and the carpet shall have a buffer layer of a certain thickness on the lower layer of the piezoelectric thin film transducer 11 to provide deformation space for the piezoelectric thin film transducer 11. When a human body steps on the carpet, the piezoelectric thin film transducer 11 outputs a first current.

[0039] Compared to traditional chemical batteries, the power supply system of this application uses a piezoelectric thin film transducer to convert mechanical energy into electrical energy to provide power. This piezoelectric thin film transducer has the advantages of simple structure, no heat generation, and easy processing, and the flexible thin film structure can be used in more scenarios.

[0040] The piezoelectric ceramic transducer 12 includes a piezoelectric ceramic sheet configured to deform under external force to generate a second current. The energy storage unit 3 is electrically connected to the piezoelectric ceramic transducer 12 to collect the second current and store it as electrical energy for use by the power-consuming unit.

[0041] In some embodiments, the piezoelectric ceramic transducer unit may further include a sheet-like substrate. The piezoelectric ceramic sheet is disposed on the sheet-like substrate, which serves to increase the mechanical strength of the piezoelectric ceramic sheet and protect it. For example, the piezoelectric ceramic sheet may be attached to the sheet-like substrate. In some embodiments, the sheet-like substrate has a small thickness, so that it possesses both sufficient mechanical strength and elasticity to better adapt to deformation during movement, thereby causing the piezoelectric ceramic sheet to deform and inducing more electrical signals at its positive and negative poles. Specifically, the thickness of the sheet-like substrate can be from 0.01 mm to 1 mm; for example, the thickness can be 0.05 mm, 0.08 mm, 0.2 mm, 0.5 mm, or 0.8 mm, etc.

[0042] Figure 3 These are schematic diagrams of the piezoelectric ceramic transducer units shown in some embodiments of this specification. Figure 3 As shown, the piezoelectric ceramic transducer unit 12A includes a sheet-like substrate 122, a piezoelectric ceramic sheet 121, and an elastic support member 123. The piezoelectric ceramic sheet 121 is attached to the sheet-like substrate 122, and one end of the elastic support member 123 is fixedly connected to the sheet-like substrate 122. The elastic support member 123 can be an elastic support column with a certain rigidity (such as a spring made of a relatively hard material), and one end of it can be fixedly connected to the center of the plane of the sheet-like substrate 122, thereby giving the sheet-like substrate 122 a larger deformation space.

[0043] In some embodiments, when the power supply system is applied to a shoe, the piezoelectric ceramic transducer unit can be configured to be disposed in at least a portion of the sole. When the foot presses against the sheet substrate 122, the sheet substrate 122 can generate more deformation, thereby causing the piezoelectric ceramic 121 to output more electrical energy. Simultaneously, the elastic support member 123 can further increase the shoe's wearing comfort, resulting in an improved user experience. In some embodiments, the other end of the elastic support member 123 can be fixed to the heel of the sole, and the elastic support member 123 supports the sheet substrate 122 within the heel area.

[0044] In some embodiments, the sheet-like substrate 122 may be horizontally disposed on the elastic support 123, i.e. Figure 3 The installation method is shown. In some other embodiments, the sheet-like substrate 122 can be inclinedly disposed on the elastic support 123; specifically, it can be... Figure 3 The sheet substrate 122 is tilted towards one of its edges so that the edge can contact the mounting surface, such as a shoe sole, to form another support. This arrangement provides better support for the sheet substrate 122 and better protection for the piezoelectric ceramic sheet 121 on it.

[0045] Specifically, the electromagnetic transducer 2 may include a magnet and a conductive coil. The conductive coil is capable of relative motion that cuts the magnetic field lines of the magnet to generate a third current. The energy storage unit 3 is electrically connected to the electromagnetic transducer 2 to collect the third current and store it as electrical energy for use by the power-consuming unit.

[0046] In some embodiments, the conductive coil is fixed, and the magnet can move relative to the conductive coil, causing the conductive coil to cut the magnetic field lines of the magnet and generate an induced electrical signal. In still other embodiments, the magnet is fixed, and the conductive coil can move, causing a change in the magnetic flux in the conductive coil and generating an induced electrical signal.

[0047] In some embodiments, when the power supply system is applied to shoes, the electromagnetic transducer unit is configured to be located at the heel of the sole. The heel of the sole is the location on the sole corresponding to the heel area of ​​the human foot. During walking, the heel has a large displacement space; placing the electromagnetic transducer unit here allows for the conversion of more vibrational energy into electrical energy. In some embodiments, the electromagnetic transducer unit may be located circumferentially on the sole, which can be the edge of the sole surface, specifically including the edge of the toe area at the front of the sole, the edge of the forefoot area of ​​the sole, and the edge of the heel. Figure 8 The electromagnetic transducer unit 2, drawn with a dashed line, is located at the edge of the foot area on the sole. In some embodiments, multiple electromagnetic transducers can be arranged sequentially along the circumference of the sole, or only in a portion of the circumference. In some embodiments, multiple electromagnetic transducers can be arranged simultaneously in the heel area and the circumference area of ​​the sole, thus capturing as much vibrational energy generated by walking as possible and converting it into electrical energy, while saving the usable space occupied by the electromagnetic transducers on the sole. In some optional embodiments, the electromagnetic transducer unit can also be configured to be located inside the cushion or seat cushion. When the cushion or seat cushion changes position or is shaken by an external force, the magnet changes position due to the shaking, thereby generating a movement that cuts magnetic field lines and thus generating an induced current.

[0048] Figure 5 These are schematic diagrams of the electromagnetic transducer unit shown in some embodiments of this specification. Figure 6 yes Figure 5 A schematic diagram of the internal structure of the middle limiting component. (See diagram below.) Figure 5 and Figure 6As shown, the electromagnetic transducer 2 further includes a conductive coil 21, a limiting member 22, and a magnet 23. The conductive coil 21 can be electrically connected to the energy storage unit 3 to form a closed loop. For example, the two ends of the conductive coil 21 are connected to the capacitor of the energy storage unit 3, in which case the conductive coil 21 and the capacitor form a closed loop. The limiting member 22 can be a hollow structure, with the magnet 23 located inside the limiting member 22 and capable of moving inside it. The conductive coil 21 surrounds the outside of the limiting member 22, and the magnet 23 can be a permanent magnet. In some embodiments, the inner diameter of the limiting member 22 is equal to or approximately the outer diameter of the magnet 23. Thus, the magnet 23 can be confined within the limiting member 22 and move up and down along the length of the limiting member 22, ensuring that the movement of the magnet 23 enables the conductive coil 21 to effectively cut magnetic field lines. The limiting member 22 can be coated with a lubricant to reduce the friction between the magnet 23 and the inner wall of the limiting member 22, further ensuring the movement of the magnet 23. In some embodiments, the limiting member 22 can be fixedly disposed on the sole, specifically in the heel area or circumferential area of ​​the sole. The limiting member can be made of a non-magnetic material, for example, plastic, ceramic, stainless steel, etc. In some embodiments, the limiting member 22 can be a rigid cylindrical tube, which, when installed inside the shoe, has its lower opening closed by the upper surface of the sole and its upper opening closed by the lower surface of the insole, thus forming a sealed cavity inside the rigid cylindrical tube. The magnet 23 placed inside can move with the foot, thereby changing the magnetic flux in the closed loop formed by the conductive coil 21, and an induced current appears inside the conductive coil 21. In some embodiments, the limiting member can also be replaced by a spring, which deforms when compressed and, when placed inside the shoe, can also enhance the user's foot comfort. In some embodiments, the length L1 of the limiting member 22 is greater than the length L3 of the conductive coil (i.e., Figure 5 The length L3 of the coil formed by the conductive wire on the axis of the limiting member 22 helps to increase the change in magnetic flux within the conductive coil 21 when the magnet 23 moves up and down within the limiting member 22, thereby increasing the induced current. In some embodiments, the length L1 of the limiting member 22 is not less than the sum of the length L3 of the conductive coil and the length L2 of the magnet (such as the dimension of the magnet 23 in the wire-drawing direction of the limiting member 22), and the length L3 of the conductive coil is not less than the length L2 of the magnet. The conductive coil 21 is sleeved on the outer end of the limiting member 22, such as the upper end or the lower end. With this arrangement, the magnet 23 can completely enter and exit the conductive coil 21 during movement, further ensuring that the magnetic flux within the conductive coil 21 can change to a greater extent, thereby increasing the induced current.

[0049] In some embodiments, Figure 5The limiting member 22 shown can be omitted, and a conductive spring tube can be used instead of the conductive coil 21. That is, the electromagnetic transducer unit includes a conductive spring and a magnet. The magnet is located inside the conductive spring and can move inside it. Similar to the conductive coil, the conductive spring forms part of a closed circuit. In some embodiments, the magnet can be tetrahedral, octahedral, or other shapes. When the magnet moves in the conductive spring, it can cause more changes in the magnetic flux in the closed loop, thereby inducing more electrical signals. The conductive spring can serve the dual purpose of forming a closed circuit and providing elastic support for the human foot, while further simplifying or miniaturizing the structure of the electromagnetic transducer unit.

[0050] Example 2

[0051] The piezoelectric ceramic transducer unit 12 of the power supply system provided in this embodiment differs from the piezoelectric ceramic transducer unit 12 in Embodiment 1. Specifically, the structure of the piezoelectric ceramic transducer unit 12 is as follows: Figure 4 As shown. See also Figure 4 The piezoelectric ceramic transducer 12B shown includes a piezoelectric ceramic sheet 124, a sheet substrate 122, a sheet substrate 125, and an elastic support 123. The sheet substrates 122 and 125 are connected at some of their edges, such as on one side of each other. In some embodiments, the two sheet substrates can be connected to each other by welding or integral casting. In other embodiments, the two sheet substrates can be considered as a single sheet material with a larger long side folded to form two different parts. One end of the elastic support 123 is fixedly connected to the sheet substrate 122, and the other end is fixedly connected to the sheet substrate 125. The piezoelectric ceramic sheet 124 is attached to the sheet substrate 122. In some embodiments, the two ends of the elastic support 123 can be fixedly connected to the center of the sheet substrates 122 and 125, respectively. Figure 4 The piezoelectric ceramic transducer shown has a structure with better elastic support, resulting in a better user experience when used in shoe soles. About Figure 4 More details about the medium-voltage ceramic sheet 124, the sheet-like substrates 122 and 125, and the elastic support 123 can be found in [link to relevant documentation]. Figure 3 The relevant descriptions will not be repeated here.

[0052] In some embodiments, piezoelectric ceramic sheets (such as piezoelectric ceramic sheet 121 and piezoelectric ceramic sheet 124) are attached to both sides of the sheet substrate 122 to further improve the output power of the piezoelectric ceramic transducer unit (such as piezoelectric ceramic transducer unit 12A or piezoelectric ceramic transducer unit 12B).

[0053] Example 3

[0054] This specification also provides a circuit diagram of a transducer power supply system in some embodiments. For example...Figure 7 As shown, the electrical signals generated by the electromagnetic transducer 2, the piezoelectric thin-film transducer 11, and the piezoelectric ceramic transducer 12 are respectively connected to the capacitor Cp through leads to charge the capacitor Cp. The electrical signals generated by the aforementioned transducers can have polarity (e.g., corresponding to different directions of movement or deformation), therefore, the voltage Vp across the capacitor Cp also changes between positive and negative over time. The voltage Vp is converted into a DC signal by a rectifier bridge (composed of diodes D1, D2, D3, and D4) and stored in the energy storage unit. In some embodiments, the energy storage unit can be a rechargeable battery. Figure 7 The capacitor C shown can be a rechargeable battery capacitor. The rectified DC signal charges the capacitor, storing the electrical signal in the rechargeable battery. In some embodiments, the energy storage unit can be a capacitor directly, such as a large-capacity capacitor with a slow discharge rate. The DC signal charges capacitor C, which then stores energy. Afterward, capacitor C can slowly release the energy to power the user unit. Using rechargeable batteries or capacitors for energy storage effectively reduces the environmental pollution caused by discarded chemical batteries compared to disposable chemical batteries.

[0055] Example 4

[0056] This specification provides a shoe sole in some embodiments, including the power supply system described in any of the foregoing embodiments. The electrical energy generated by the power supply system can be used by electrical units on the shoe. Exemplary examples include, but are not limited to, communication modules, lighting devices, audio players, and positioning devices. Figure 8 This is an installation diagram of a transducer power supply system according to some embodiments of this specification. For example... Figure 8 As shown, the electromagnetic transducer 2 is disposed in the heel area of ​​the sole. Optionally, the electromagnetic transducer 2 can also be disposed in the circumferential direction of the sole. The piezoelectric thin film transducer 11 is disposed in at least a portion of the lower layer of the insole or at least a portion of the insole, and the piezoelectric ceramic transducer 12 is disposed in the heel area of ​​the sole. This arrangement can make full use of the sole space, and the specific structure of the transducer can increase the elastic support effect of the sole, resulting in a better user experience. The energy storage unit 3 can be disposed in the forefoot area of ​​the sole where elastic support requirements are lower.

[0057] In some embodiments, the sole also includes a gait detection unit and a communication module (such as...). Figure 8 Communication module 4 in the middle. Figure 9 This is a schematic diagram of the gait detection unit according to some embodiments of this specification. Figure 9The gait detection unit 7 shown includes a shoe insole-shaped flexible substrate 72 and multiple piezoelectric elements 71. The piezoelectric elements 71 can be PZT (piezoelectric ceramic) or flexible piezoelectric materials. The flexible substrate 72 can be made of materials such as silicone, cotton, or leather. The piezoelectric elements 71 are distributed at different locations on the shoe insole-shaped flexible substrate 72, allowing them to sense pressure on different parts of the foot during walking, thus reflecting gait information. The communication module can be a Bluetooth communication module, a Zigbee communication module, a WiFi module, etc., powered by the aforementioned transducer power supply device. Each piezoelectric element 71 can have a signal connection to the communication module (each piezoelectric element 71 has two leads, and each pair of leads is connected one-to-one with multiple signal input interfaces of the communication module), so that the electrical signals generated by the deformation of each piezoelectric element under force can be output to external devices, such as mobile phones or computers. External devices have more powerful signal processing capabilities and can determine the user's gait information based on the output signals of the piezoelectric elements at different locations. In some other embodiments, the flexible substrate 72 may be a flexible circuit board, and the two pole electrical signals of each piezoelectric element 71 can be led out through the circuit on the flexible circuit board. Finally, the flexible circuit board transmits the electrical signals of each piezoelectric element to the communication module.

[0058] In some embodiments, the sole also includes a positioning unit (such as...). Figure 8 The positioning unit 5 shown can automatically acquire positioning information and can be powered by the aforementioned power supply device. For example, the positioning unit can be a positioning device based on positioning principles such as GPS positioning, BeiDou positioning, base station positioning, or inertial navigation positioning. The positioning unit has a signal connection with the communication module, which can send the positioning information output by the positioning unit, for example, to a mobile phone or computer.

[0059] In some embodiments, the communication module and positioning unit may be selected from low-power devices to better suit the self-generating capability of the power conversion device.

[0060] It is easy to understand that the electrical signals induced by the aforementioned electromagnetic and piezoelectric transducers are related to the direction and amplitude of the gait movement. Therefore, these electrical signals can be considered to carry gait information. In some embodiments of this specification, the electromagnetic and piezoelectric transducers are also connected to a communication module so that a portion of the electrical signals output by the electromagnetic and piezoelectric transducers can be transmitted as gait detection signals via the communication module. In some embodiments, the electrical signals transmitted by the transducers through the communication module and the electrical signals supplied to the energy storage unit can be transmitted separately through two parallel branches. Figure 5Taking the electromagnetic transducer unit shown as an example, the two ends of the conductive coil 21 are simultaneously connected to the signal input interfaces of both the energy storage unit and the communication module. In practical use, the internal resistance of the energy storage unit and the signal input interface can be adjusted to distribute the electrical signal output by the electromagnetic transducer unit. Specifically, the internal resistance can be adjusted so that the current output by the electromagnetic transducer unit to the energy storage unit is greater than the current output to the communication module. The connection method of the piezoelectric transducer unit is similar and will not be described in detail here. The output electrical signals of the electromagnetic transducer unit and the piezoelectric transducer unit can enrich the gait detection information to a certain extent, obtaining more accurate gait characteristics from the user.

[0061] Figure 10 This is a schematic diagram illustrating the assembly of the shoe sole according to some embodiments of this specification. For example... Figure 10 As shown, some embodiments of this specification provide a sole that may include a sole body (a sole or a combination of a sole and a midsole). The sole body is provided with an electromagnetic transducer unit 2, a piezoelectric ceramic transducer unit 12, an energy storage unit 3, a communication module 4, and a positioning unit 5. A first insole 6 is then placed on top, followed by a gait detection unit 7, a second insole 6, a piezoelectric thin film transducer unit 11, and a third insole 6. It should be understood that... Figure 10 The shoe sole assembly shown is merely an example and should not be construed as a limitation on the structure of the shoe soles provided in some embodiments of this specification. For example, in some other modified embodiments, the first and / or second insole layers may be omitted; and the positions of the gait detection unit 7 and the piezoelectric thin film transducer unit 11 may be interchanged.

[0062] Example 5

[0063] Some embodiments of this specification also provide a shoe including the aforementioned transducer power supply system, wherein the electrical energy generated by the transducer power supply system can be used by electrical units on the shoe. Exemplary electrical units may include, but are not limited to, communication modules, lighting devices, audio players, and positioning devices. In some embodiments, the installation positions of the electromagnetic transducer unit and the piezoelectric transducer unit in the transducer power supply system can be found in [reference needed]. Figure 8 and Figure 10 According to the relevant instructions, the energy storage unit can be installed in the sole area of ​​the shoe or in a certain position on the upper. For example, the energy storage unit can be encapsulated in the heel of the shoe (such as the part of the upper that covers the heel).

[0064] In some embodiments, the shoe also includes a gait detection unit and a communication module. More information about the gait detection unit and the communication module can be found at [link to relevant documentation]. Figure 8 , Figure 9 and Figure 10 The relevant explanation is provided below. In some alternative embodiments, the communication module may be located in a position on the upper, such as in the heel or side.

[0065] In some embodiments, the shoe may also include a positioning unit. More information about the positioning unit can be found at [link to relevant documentation]. Figure 8 and Figure 10 The relevant explanation is provided below. In some alternative embodiments, the communication module may be located outside the sole, such as within the heel counter.

[0066] Figure 11 This is a schematic diagram of a shoe according to some embodiments of this specification. The shoe 8 in the figure includes the aforementioned power supply system, gait detection unit, positioning unit, and communication module. Gait detection signals from the gait detection unit and positioning signals from the positioning unit can be transmitted to external device 9 through the communication module to promptly obtain the user's gait and positioning information.

[0067] The basic concepts have been described above. It is obvious that the detailed disclosure above is merely illustrative and does not constitute a limitation of this specification. Although not explicitly stated herein, various modifications, improvements, and corrections may be made to this specification by those skilled in the art. Such modifications, improvements, and corrections are taught in this specification and therefore remain within the spirit and scope of the exemplary embodiments described herein.

Claims

1. A power supply system for energy conversion, characterized in that, It includes piezoelectric thin film transducer units, piezoelectric ceramic transducer units, electromagnetic transducer units, and energy storage units; The piezoelectric thin film transducer, the piezoelectric ceramic transducer, and the electromagnetic transducer are respectively electrically connected to the energy storage unit. The energy storage unit collects the first current generated by the piezoelectric thin film transducer, the second current generated by the piezoelectric ceramic transducer, and the third current generated by the electromagnetic transducer and stores them as electrical energy to provide power to the power-consuming unit.

2. The power supply system for power conversion according to claim 1, characterized in that, The piezoelectric ceramic transducer unit includes a sheet substrate, a piezoelectric ceramic sheet, and an elastic support member. The sheet substrate is disposed at one end of the elastic support member, and the piezoelectric ceramic sheet is attached to at least one side of the sheet substrate. The piezoelectric ceramic sheet is electrically connected to the energy storage unit.

3. The power supply system for power conversion according to claim 2, characterized in that, The thickness of the sheet-like substrate is 0.01 mm to 1 mm.

4. The power supply system for power conversion according to claim 1, characterized in that, The electromagnetic transducer unit includes a limiting member; the limiting member is a tubular structure, a magnet is movably disposed inside the limiting member along the length direction of the limiting member, and a conductive coil is sleeved on the outside of the limiting member.

5. The power supply system according to claim 4, characterized in that, The conductive coil is sleeved on the end of the limiting member, and the length L1 of the limiting member, the length L2 of the magnet and the length L3 of the conductive coil satisfy the following relationship: L2 + L3 ≤ L1 and L2 ≤ L3.

6. The power supply system for power conversion according to any one of claims 1 to 5, characterized in that, The energy storage unit includes a rechargeable battery or a capacitor.

7. A shoe, characterized in that, Including the power supply system according to any one of claims 1 to 6, the piezoelectric film transducer unit includes a piezoelectric film, the piezoelectric film being disposed in one or more of the following locations: at least a portion of the underside of the insole, at least a portion of the insole; The piezoelectric ceramic transducer unit is disposed in at least a portion of the shoe sole; The electromagnetic transducer unit is disposed in one or more of the following locations: the heel of the sole, or at least a portion of the circumferential region of the sole; The energy storage unit is located in at least a portion of the sole.

8. The shoe according to claim 7, characterized in that, The piezoelectric ceramic transducer unit includes a sheet substrate and an elastic support member. The sheet substrate is disposed at one end of the elastic support member, and the other end of the elastic support member is fixed to the heel of the shoe or sole. The elastic support member supports the sheet substrate within the heel.

9. The shoe according to claim 7, characterized in that, It also includes a gait detection unit and a communication module; The communication module is electrically connected to the power supply system, and the power supply system supplies power to the communication module; The gait detection unit includes a shoe insole-shaped flexible substrate and multiple piezoelectric elements, which are distributed on the shoe insole-shaped flexible substrate. The gait detection unit is connected to the communication module by a signal, and the gait detection signal obtained based on the plurality of piezoelectric elements is sent out through the communication module. and / or The electromagnetic transducer, the piezoelectric ceramic transducer, and the piezoelectric thin film transducer are respectively connected to the communication module. Part of the electrical signal output by the electromagnetic transducer, part of the electrical signal output by the piezoelectric ceramic transducer, and part of the electrical signal output by the piezoelectric thin film transducer are sent out as gait detection signals through the communication module.

10. The shoe according to claim 9, characterized in that, It also includes a positioning unit, which is electrically connected to the power supply system, and the power supply system supplies power to the positioning unit; The positioning unit is connected to the communication module by a signal, and the positioning information output by the positioning unit is sent out through the communication module. The communication module includes a Bluetooth communication module.

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