WO2018095228A1 - 运动能量收集电路和便携式电子设备 - Google Patents

运动能量收集电路和便携式电子设备 Download PDF

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Publication number
WO2018095228A1
WO2018095228A1 PCT/CN2017/110480 CN2017110480W WO2018095228A1 WO 2018095228 A1 WO2018095228 A1 WO 2018095228A1 CN 2017110480 W CN2017110480 W CN 2017110480W WO 2018095228 A1 WO2018095228 A1 WO 2018095228A1
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Prior art keywords
module
energy
motion
frequency motion
mosfet
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PCT/CN2017/110480
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English (en)
French (fr)
Inventor
蒋云
肜卿
蒋丛华
周虎
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比亚迪股份有限公司
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Priority to US16/349,573 priority Critical patent/US20200195038A1/en
Publication of WO2018095228A1 publication Critical patent/WO2018095228A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/08—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for recovering energy derived from swinging, rolling, pitching or like movements, e.g. from the vibrations of a machine
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G5/00—Devices for producing mechanical power from muscle energy
    • F03G5/06—Devices for producing mechanical power from muscle energy other than of endless-walk type
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time pieces
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
    • G04G19/12—Arrangements for reducing power consumption during storage
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G21/00—Input or output devices integrated in time-pieces
    • G04G21/02—Detectors of external physical values, e.g. temperature
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/0044—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction specially adapted for holding portable devices containing batteries

Definitions

  • the present invention relates to the field of electronic device technologies, and in particular, to a motion energy collecting circuit and a portable electronic device.
  • life time is the biggest resistance to its development.
  • most wearable smart devices have taken the practice of sacrificing configuration and functionality, greatly reducing the user experience.
  • the present invention aims to solve at least one of the technical problems in the related art to some extent. Accordingly, it is an object of the present invention to provide a motion energy harvesting circuit that avoids wasted motion energy and improves the collection efficiency of motion energy.
  • a second object of the present invention is to provide a portable electronic device.
  • an embodiment of the first aspect of the present invention provides a motion energy collecting circuit, comprising: a power generating module, configured to convert kinetic energy generated by human motion into electrical energy, and output direct current; low frequency motion energy a collecting module, the low-frequency motion energy collecting module is configured to collect DC power output by the power generating module when the human body is in a low-frequency motion state; and a high-frequency motion energy collecting module, where the high-frequency motion energy collecting module is configured to collect the power generating module a direct current output when the human body is in a high-frequency motion state; an energy storage module, the energy storage module being respectively connected to the low-frequency motion energy collection module and the high-frequency motion energy collection module for storing electrical energy; the motion switching module, The motion switching module is respectively connected to the power generation module, the low frequency motion energy collection module and the high frequency motion energy collection module, and the motion switching module is configured to monitor a motion state of the human body and control according to the motion state of the human body.
  • the kinetic energy generated by the human body motion is converted into electric energy by the power generation module, and the direct current power is output, and the motion state of the human body is monitored by the motion switching module to control the low frequency motion energy collecting module to collect power generation according to the human body motion state.
  • the module outputs direct current when the human body is in a low frequency motion state, and controls the high frequency motion energy collecting module to collect the direct current power output by the power generating module when the human body is in a high frequency motion state to respectively charge the energy storage module.
  • the circuit can avoid the waste of kinetic energy and improve the collection efficiency of kinetic energy.
  • a second aspect of the present invention provides a portable electronic device including the above-described motion energy collecting circuit.
  • the above-described motion energy collecting circuit can avoid waste of kinetic energy and improve the collection efficiency of the kinetic energy.
  • FIG. 1 is a block schematic diagram of a motion energy harvesting circuit in accordance with an embodiment of the present invention.
  • FIG. 2 is a block schematic diagram of a motion switching module in accordance with one embodiment of the present invention.
  • FIG. 3 is a block diagram showing the structure of a motion energy harvesting circuit in accordance with one embodiment of the present invention.
  • FIG. 4 is a block diagram showing the structure of a motion energy collecting circuit according to another embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a motion energy collecting circuit according to still another embodiment of the present invention.
  • FIG. 6 is a block schematic diagram of a portable electronic device in accordance with an embodiment of the present invention.
  • the motion energy collecting circuit of the embodiment of the present invention includes: a power generating module 10 , a low frequency motion energy collecting module 20 , a high frequency motion energy collecting module 30 , an energy storage module 40 , and a motion switching module 50 .
  • the power generation module 10 is configured to convert kinetic energy generated by human motion into electrical energy and output direct current.
  • the low frequency motion energy collection module 20 is configured to collect the direct current power generated by the power generation module 10 when the human body is in a low frequency motion state.
  • the high-frequency motion energy collecting module 30 is configured to collect the direct current power generated by the power generating module 10 when the human body is in a high-frequency motion state.
  • the energy storage module 40 is connected to the low frequency motion energy collection module 20 and the high frequency motion energy collection module 30, respectively, for storing electrical energy.
  • the motion switching module 50 is respectively connected to the power generation module 10, the low frequency motion energy collection module 20, and the high frequency motion energy collection module 30.
  • the motion switching module 50 is configured to monitor the motion state of the human body, and control the low frequency motion energy collection module 20 according to the motion state of the human body.
  • the high frequency motion energy harvesting module 30 switches to operate to charge the energy storage module 40, respectively.
  • the low frequency motion refers to a state in which the human body is in a low frequency motion, for example, walking and unconscious lifting.
  • High-frequency exercise refers to the state in which the human body is in high-frequency motion, such as running and other large-scale sports.
  • the power generation module 10 can convert the kinetic energy generated when the human body is in a low frequency motion state or a high frequency motion state into electrical energy, and output direct current power.
  • the motion switching module 50 includes an accelerometer 51, a controllable switching unit 52, and a single chip microcomputer 53.
  • the accelerometer 51 is used to detect human body acceleration information.
  • the first end of the controllable switch unit 52 is connected to the power generation module 10.
  • the second end of the controllable switch unit 52 is connected to the low frequency motion energy collection module 20, and the third end of the controllable switch unit 52 is high.
  • the frequency motion energy harvesting module 30 is connected.
  • the single chip microcomputer 53 is respectively connected with the accelerometer 51 and the control end of the controllable switch unit 52, and the single chip microcomputer 53 is used according to the person
  • the body acceleration information determines the motion state of the human body, and controls the controllable switch unit 52 when the human body is in the low frequency motion state to cause the low frequency motion energy collecting module 20 to collect the direct current output from the power generation module 10 and intermittently charge the energy storage module 40. And controlling the controllable switch unit 52 when the human body is in a high frequency motion state to cause the high frequency motion energy harvesting module 30 to collect the direct current output from the power generation module 10 and continuously charging the energy storage module 40.
  • the controllable switching unit 52 includes a first MOSFET Q1 and a second MOSFET Q2.
  • the gate of the first MOSFET Q1 is connected to the first output end of the single chip microcomputer 53, and the source of the first MOSFET Q1 serves as the third end of the controllable switch unit 52.
  • the gate of the second MOSFET Q2 is connected to the second output of the microcontroller 53, the source of the second MOSFET Q2 serves as the second terminal of the controllable switching unit 52, the drain of the first MOSFET Q1 and the drain of the second MOSFET Q2.
  • the acceleration information of the human body can be detected by the accelerometer 51, and the single-chip microcomputer 53 determines whether the motion state of the human body is in a low-frequency motion state or a high-frequency motion state according to the human body acceleration information.
  • the single chip 53 if it is detected that the human body is in a low frequency motion state, the single chip 53 outputs a signal 1 as a low level signal and a signal 2 as a high level signal, thereby controlling the first MOSFET Q1 to be in an off state, The second MOSFET Q2 is in an on state.
  • the low frequency motion energy collecting module 20 collects the direct current output from the power generation module 10 by controlling the controllable switching unit 52, and intermittently charges the energy storage module 40.
  • the energy storage module 40 can be a super capacitor or a rechargeable battery.
  • the operation of the motion energy collecting circuit includes a power generation module 10, a low frequency motion energy collection module 20, and an energy storage module 40.
  • the low frequency motion energy collecting module 20 includes a first capacitor C1, a third MOSFET Q3, a first diode D1, and a driving unit 21.
  • the first end of the first capacitor C1 is connected to the second end of the controllable switch unit 52, and the second end of the first capacitor C1 is grounded to GND.
  • the source of the third MOSFET Q3 is connected to one end of the first capacitor C1.
  • the anode of the first diode D1 is connected to the drain of the third MOSFET Q3, and the cathode of the first diode D1 is connected to the energy storage module 40.
  • the output end of the driving unit 21 is connected to the gate of the third MOSFET Q3, and the driving unit 21 intermittently drives the third MOSFET Q3 to be turned on and off according to the voltage across the first capacitor C1, so that the low-frequency motion energy collecting module 20 is intermittent.
  • the energy storage module 40 is electrically charged.
  • the driving unit 21 includes a first resistor R1, a second resistor R2, a third resistor R3, a second diode D2, a fourth resistor R4, an amplifier A, and a fifth resistor R5.
  • the first resistor R1 and the second resistor R2 are connected in series and connected in parallel with the first capacitor C1.
  • the first resistor R1 and the second resistor R2 have a second node J2.
  • One end of the third resistor R3 is connected to the first end of the first capacitor C1.
  • the cathode of the second diode D2 is connected to the other end of the third resistor R3, and the anode of the second diode D2 is connected to the second end of the first capacitor C1.
  • One end of the fourth resistor R4 is connected to the other end of the third resistor R3 and the cathode of the second diode D2, respectively.
  • the positive input terminal of the amplifier A is connected to the other end of the fourth resistor R4, and the negative input terminal of the amplifier A is connected to the second node J2, the amplifier The output of A is connected to the gate of the third MOSFET Q3.
  • a fifth resistor R5 is coupled between the positive input of amplifier A and the output of the amplifier.
  • the second diode D2 may be a Schottky diode.
  • the driving unit 21 drives the third MOSFET.
  • Q3 is turned on, the voltage of the first capacitor C1 is charged to the energy storage module 40 through the first diode D1, and at this time, the voltage across the first capacitor C1 is decreased, and the voltage across the first capacitor C1 drops to the first
  • the threshold value is 1, for example, 1V
  • the driving unit 21 drives the third MOSFET Q3 to turn off.
  • the driving unit 21 drives the third MOSFET Q3 to turn on again, and the first capacitor C1 is again
  • the third MOSFET Q3 is intermittently driven to be turned on and off according to the voltage across the first capacitor C1 by the driving unit 21, so that the low frequency motion energy collecting module 20 collects the direct current output from the power generation module 10. And charging the energy storage module 40 intermittently.
  • the first threshold and the second threshold may be set as needed, and may be implemented by adjusting the resistances of the resistors R1 R R5.
  • the single-chip microcomputer 53 outputs a signal 1 as a high-level signal, and the signal 2 is a low-level signal, thereby controlling the first MOSFET Q1 to be in a conducting state.
  • the second MOSFET Q2 is in an off state.
  • the high frequency motion energy collecting module 30 collects the direct current output from the power generation module 10 by controlling the controllable switch 52, and continuously charges the energy storage module 40.
  • the motion energy collecting circuit may include a power generation module 10, a high frequency motion energy harvesting module 30, and an energy storage module 40.
  • the high frequency motion energy harvesting module 30 can be implemented by using an LTC3105 or LTC3129 boost energy harvesting chip to charge the energy storage module 40 with a continuous output.
  • the kinetic energy generated by the power generation module 10 is converted into electric energy, and the generated electric energy is continuously stored in the form of direct current through the LTC3105 or LTC3129 boost energy collecting chip.
  • the energy module 40 is charged.
  • the motion energy collecting circuit of the embodiment of the present invention monitors the motion state of the human body through the motion switching module 50, and controls the switching operation of the low-frequency motion energy collecting module 20 and the high-frequency motion energy collecting module 30 according to the human body motion state, which can correspond to different motion states. Different sizes of exercise energy are separately collected, thereby avoiding waste of exercise energy and improving the collection efficiency of exercise energy.
  • the energy storage module 40 controls the supply current through the diode to control the supply current to the load to provide power to the load.
  • the motion energy collecting circuit of the embodiment of the invention can be used not only in the wearable intelligent electronic device, but also in an industrial occasion with certain motion energy generation, for example, an Internet of Things node and a smart home.
  • the kinetic energy generated by the human body motion is converted into electric energy by the power generation module, and the direct current power is output, and the motion state of the human body is monitored by the motion switching module to control the low frequency motion according to the motion state of the human body.
  • the energy collection module collects the output of the power generation module when the human body is in a low frequency motion state.
  • the direct current power is controlled, and the high frequency motion energy collecting module is collected to collect the direct current power outputted by the power generating module when the human body is in a high frequency motion state to respectively charge the energy storage module.
  • the circuit can avoid the waste of sports energy, improve the collection efficiency of sports energy, and save energy and environmental protection.
  • the present invention also proposes a portable electronic device.
  • FIG. 6 is a portable electronic device in accordance with an embodiment of the present invention. As shown in FIG. 6, the portable electronic device 1000 includes the athletic energy harvesting circuit 100 of the above embodiment.
  • the portable electronic device 1000 can be a wearable electronic device, wherein the wearable electronic device can include a smart bracelet, a smart watch.
  • the above-mentioned motion energy collecting circuit can avoid waste of sports energy, improve the collection efficiency of the sports energy, and save energy and environment.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the meaning of "a plurality” is at least two, such as two, three, etc., unless specifically defined otherwise.
  • the terms “installation”, “connected”, “connected”, “fixed” and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or integrated; can be mechanical or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements, unless otherwise specified Limited.
  • the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • the first feature "on” or “under” the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact.
  • the first feature "above”, “above” and “above” the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

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Abstract

一种运动能量收集电路（100）和便携式电子设备（1000），所述电路（100）包括：用于将人体运动产生的动能转换为电能，并输出直流电的发电模块（10）；用于收集发电模块（10）在人体处于低频运动状态时输出的直流电的低频运动能量收集模块（20）；用于收集发电模块（10）在人体处于高频运动状态时输出的直流电的高频运动能量收集模块（30）；分别与低频运动能量收集模块（20）和高频运动能量收集模块（30）相连用于存储电能的储能模块（40）；分别与发电模块（10）、低频运动能量收集模块（20）和高频运动能量收集模块（30）相连的运动切换模块（50），用于监测人体运动状态，并根据人体运动状态控制低频运动能量收集模块（20）和高频运动能量收集模块（30）切换进行工作，以分别对储能模块（40）进行充电。该电路（100）能够避免运动能量的浪费，提高运动能量的收集效率。

Description

运动能量收集电路和便携式电子设备 技术领域
本发明涉及电子设备技术领域，特别涉及一种运动能量收集电路和一种便携式电子设备。
背景技术
当今可穿戴智能电子设备越来越受到消费者的青睐，然而其续航时间的问题一直制约着整个可穿戴智能电子设备行业的发展。目前，市场上流行的可穿戴智能设备基本上都是采用内置锂电池的方式，但是其续航时间普遍较短。
可以说，无论是智能手表还是智能手机，亦或是其他类型的电子产品，续航时间都是其发展的最大阻力。为了尽量延长续航时间，大多数的可穿戴智能设备均采取了牺牲配置和功能的做法，大大降低了用户的体验。
发明内容
本发明旨在至少在一定程度上解决相关技术中的技术问题之一。为此，本发明的一个目的在于提出一种运动能量收集电路，该电路能够避免运动能量的浪费，提高运动能量的收集效率。
本发明的第二个目的在于提出一种便携式电子设备。
为实现上述目的，本发明第一方面实施例提出了一种运动能量收集电路，其包括：发电模块，所述发电模块用于将人体运动产生的动能转换为电能，并输出直流电；低频运动能量收集模块，所述低频运动能量收集模块用于收集所述发电模块在人体处于低频运动状态时输出的直流电；高频运动能量收集模块，所述高频运动能量收集模块用于收集所述发电模块在人体处于高频运动状态时输出的直流电；储能模块，所述储能模块分别与所述低频运动能量收集模块和所述高频运动能量收集模块相连，用于存储电能；运动切换模块，所述运动切换模块分别与所述发电模块、所述低频运动能量收集模块和所述高频运动能量收集模块相连，所述运动切换模块用于监测人体运动状态，并根据所述人体运动状态控制所述低频运动能量收集模块和所述高频运动能量收集模块切换进行工作，以分别对所述储能模块进行充电。
根据本发明实施例的运动能量收集电路，通过发电模块将人体运动产生的动能转换为电能，并输出直流电，通过运动切换模块监测人体运动状态，以根据人体运动状态控制低频运动能量收集模块收集发电模块在人体处于低频运动状态时输出的直流电，并控制高频运动能量收集模块收集发电模块在人体处于高频运动状态时输出的直流电，以分别对储能模块进行充电。该电路能够避免运动能量的浪费，提高运动能量的收集效率。
为实现上述目的，本发明第二方面实施例提出了一种便携式电子设备，其包括上述的运动能量收集电路。
根据本发明实施例的便携式电子设备，通过上述的运动能量收集电路，能够避免运动能量的浪费，提高运动能量的收集效率。
附图说明
图1是根据本发明实施例的运动能量收集电路的方框示意图。
图2是根据本发明一个实施例的运动切换模块的方框示意图。
图3是根据本发明一个实施例的运动能量收集电路的结构示意图。
图4是根据本发明另一个实施例的运动能量收集电路的结构示意图。
图5是根据本发明又一个实施例的运动能量收集电路的结构示意图。
图6是根据本发明实施例的便携式电子设备的方框示意图。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
下面结合附图来描述本发明实施例的运动能量收集电路和便携式电子设备。
图1是根据本发明实施例的运动能量收集电路的方框示意图。如图1所示，本发明实施例的运动能量收集电路包括：发电模块10、低频运动能量收集模块20、高频运动能量收集模块30、储能模块40和运动切换模块50。
其中，发电模块10用于将人体运动产生的动能转换为电能，并输出直流电。低频运动能量收集模块20用于收集发电模块10在人体处于低频运动状态时输出的直流电。高频运动能量收集模块30用于收集发电模块10在人体处于高频运动状态时输出的直流电。储能模块40分别与低频运动能量收集模块20和高频运动能量收集模块30相连，用于存储电能。运动切换模块50分别与发电模块10、低频运动能量收集模块20和高频运动能量收集模块30相连，运动切换模块50用于监测人体运动状态，并根据人体运动状态控制低频运动能量收集模块20和高频运动能量收集模块30切换进行工作，以分别对储能模块40进行充电。
可以理解，低频运动是指人体处于低频运动的状态，例如，走路和无意识抬手等动作。高频运动是指人体处于高频运动的状态，例如，跑步和其它大幅度的运动。发电模块10可将人体处于低频运动状态或者高频运动状态时产生的动能转换为电能，并输出直流电。
在本发明的一个实施例中，如图2所示，运动切换模块50包括：加速度计51、可控开关单元52和单片机53。其中，加速度计51用于检测人体加速度信息。如图3所示，可控开关单元52的第一端与发电模块10相连，可控开关单元52的第二端与低频运动能量收集模块20相连，可控开关单元52的第三端与高频运动能量收集模块30相连。单片机53分别与加速度计51和可控开关单元52的控制端相连，单片机53用于根据人 体加速度信息判断人体运动状态，并在人体处于低频运动状态时通过控制可控开关单元52以使低频运动能量收集模块20收集发电模块10输出的直流电、并间歇性地对储能模块40进行充电，以及在人体处于高频运动状态时通过控制可控开关单元52以使高频运动能量收集模块30收集发电模块10输出的直流电、并持续性地对储能模块40进行充电。
在本发明的一个实施例中，如图3所示，可控开关单元52包括：第一MOSFET Q1和第二MOSFET Q2。其中，第一MOSFET Q1的栅极与单片机53的第一输出端相连，第一MOSFET Q1的源极作为可控开关单元52的第三端。第二MOSFET Q2的栅极与单片机53的第二输出端相连，第二MOSFET Q2的源极作为可控开关单元52的第二端，第一MOSFET Q1的漏极与第二MOSFET Q2的漏极相连，第一MOSFET Q1的漏极与第二MOSFET Q2的漏极之间具有第一节点J1，第一节点J1作为可控开关单元52的第一端。
具体地，可通过加速度计51检测人体加速度信息，并通过单片机53根据人体加速度信息判断人体运动状态是处于低频运动状态还是处于高频运动状态。
具体地，如图3所示，如果检测到人体处于低频运动状态时，单片机53输出信号1为低电平信号，信号2为高电平信号，从而控制第一MOSFET Q1处于关断的状态、第二MOSFET Q2处于导通的状态，此时，通过控制可控开关单元52使低频运动能量收集模块20收集发电模块10输出的直流电、并间歇性地对储能模块40进行充电。其中，储能模块40可为超级电容或可充电电池。
在本发明的一个实施例中，如图4所示，在通过低频运动能量收集模块20收集发电模块10输出的直流电、并间歇性地对储能模块40进行充电时，运动能量收集电路的工作部分包括发电模块10、低频运动能量收集模块20和储能模块40。其中，低频运动能量收集模块20包括：第一电容C1、第三MOSFET Q3、第一二极管D1和驱动单元21。其中，第一电容C1的第一端与可控开关单元52的第二端相连，第一电容C1的第二端接地GND。第三MOSFET Q3的源极与第一电容C1的一端相连。第一二极管D1的阳极与第三MOSFET Q3的漏极相连，第一二极管D1的阴极与储能模块40相连。驱动单元21的输出端与第三MOSFET Q3的栅极相连，驱动单元21根据第一电容C1两端的电压间歇性地驱动第三MOSFET Q3导通和关断，以使低频运动能量收集模块20间歇性地对储能模块40进行充电。
进一步地，如图4所示，驱动单元21包括：第一电阻R1、第二电阻R2、第三电阻R3、第二二极管D2、第四电阻R4、放大器A和第五电阻R5。其中，第一电阻R1和第二电阻R2串联后与第一电容C1并联，第一电阻R1与第二电阻R2之间具有第二节点J2。第三电阻R3的一端与第一电容C1的第一端相连。第二二极管D2的阴极与第三电阻R3的另一端相连，第二二极管D2的阳极与第一电容C1的第二端相连。第四电阻R4的一端分别与第三电阻R3的另一端和第二二极管D2的阴极相连。放大器A的正输入端与第四电阻R4的另一端相连，放大器A的负输入端与第二节点J2相连，放大器 A的输出端与第三MOSFET Q3的栅极相连。第五电阻R5连接在放大器A的正输入端与放大器的输出端之间。其中，第二二极管D2可以为肖特基二极管。
具体地，在人体处于低频运动状态时，通过发电模块10将人体运动产生的动能转换为电能，且电能使得第一电容C1两端的电压到达一定阈值，例如3V时，驱动单元21驱动第三MOSFET Q3导通，第一电容C1的电压通过第一二极管D1对储能模块40进行充电，此时，会导致第一电容C1两端的电压下降，当第一电容C1两端的电压下降至第二阈值，例如1V时，驱动单元21驱动第三MOSFET Q3关断，当电能使得第一电容C1两端的电压再次到达3V时，驱动单元21再次驱动第三MOSFET Q3导通，第一电容C1再次给储能模块40进行充电，则通过驱动单元21根据第一电容C1两端的电压间歇性地驱动第三MOSFET Q3导通和关断，以使低频运动能量收集模块20收集发电模块10输出的直流电、并间歇性地对储能模块40进行充电。其中，第一阈值和第二阈值可根据需要进行设定，并可由调整电阻R1～R5的阻值实现。
具体地，如图3所示，如果检测到人体处于高频运动状态时，单片机53输出信号1为高电平信号，信号2为低电平信号，从而控制第一MOSFET Q1处于导通的状态、第二MOSFET Q2处于关断的状态，此时，通过控制可控开关52使高频运动能量收集模块30收集发电模块10输出的直流电、并持续性地对储能模块40进行充电。
在本发明的一个实施例中，如图5所示，在通过高频运动能量收集模块30收集发电模块10输出的直流电、并连续性地对储能模块40进行充电时，运动能量收集电路的工作部分可包括发电模块10、高频运动能量收集模块30和储能模块40。其中，高频运动能量收集模块30可采用LTC3105或LTC3129升压能量收集芯片实现，以持续性输出对储能模块40充电。
具体地，人体处于高频运动状态时，通过将发电模块10将人体运动产生的动能转换为电能，并且产生的电能以直流电的形式经过LTC3105或LTC3129升压能量收集芯片采集后持续性地对储能模块40进行充电。
应当理解，在人体处于低频运动状态时所产生的动能较小，因此通过发电模块10输出的直流电的电压较低；而在人体处于高频运动状态时所产生的动能较大，因此通过发电模块10输出的直流电的电压较高。本发明实施例的运动能量收集电路，通过运动切换模块50监测人体运动状态，并根据人体运动状态控制低频运动能量收集模块20和高频运动能量收集模块30切换工作，能够对应不同的运动状态对不同大小的运动能量进行分别收集，从而能够避免运动能量的浪费，提高运动能量的收集效率。
进一步地，储能模块40将储存的电能通过二极管控制供电电流流向负载，为负载提供电能。本发明实施例的运动能量收集电路不仅可运用在可穿戴智能电子设备中，也可很好地运用在有一定运动能量产生的工业场合中，例如，物联网节点以及智能家居。
综上所述，根据本发明实施例的运动能量收集电路，通过发电模块将人体运动产生的动能转换为电能，并输出直流电，通过运动切换模块监测人体运动状态，以根据人体运动状态控制低频运动能量收集模块收集发电模块在人体处于低频运动状态时输出的 直流电，并控制高频运动能量收集模块收集发电模块在人体处于高频运动状态时输出的直流电，以分别对储能模块进行充电。该电路能够避免运动能量的浪费，提高运动能量的收集效率，且节能环保。
基于上述实施例，本发明还提出一种便携式电子设备。
图6是根据本发明实施例的便携式电子设备。如图6所示，便携式电子设备1000包括上述实施例的运动能量收集电路100。
具体地，便携式电子设备1000可为穿戴式电子设备，其中，穿戴式电子设备可包括智能手环、智能手表。
需要说明的是，本发明实施例的便携式电子设备1000中未披露的细节，请参考本发明实施例的运动能量收集电路100中所披露的细节，具体这里不再详述。
根据本发明实施例的便携式电子设备，通过上述的运动能量收集电路，能够避免运动能量的浪费，提高运动能量的收集效率，且节能环保。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、 材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (10)

  1. 一种运动能量收集电路，其特征在于，包括：
    发电模块，所述发电模块用于将人体运动产生的动能转换为电能，并输出直流电；
    低频运动能量收集模块，所述低频运动能量收集模块用于收集所述发电模块在人体处于低频运动状态时输出的直流电；
    高频运动能量收集模块，所述高频运动能量收集模块用于收集所述发电模块在人体处于高频运动状态时输出的直流电；
    储能模块，所述储能模块分别与所述低频运动能量收集模块和所述高频运动能量收集模块相连，用于存储电能；
    运动切换模块，所述运动切换模块分别与所述发电模块、所述低频运动能量收集模块和所述高频运动能量收集模块相连，所述运动切换模块用于监测人体运动状态，并根据所述人体运动状态控制所述低频运动能量收集模块和所述高频运动能量收集模块切换进行工作，以分别对所述储能模块进行充电。
  2. 如权利要求1所述的运动能量收集电路，其特征在于，所述运动切换模块包括：
    加速度计，所述加速度计用于检测人体加速度信息；
    可控开关单元，所述可控开关单元的第一端与所述发电模块相连，所述可控开关单元的第二端与所述低频运动能量收集模块相连，所述可控开关单元的第三端与所述高频运动能量收集模块相连；
    单片机，所述单片机分别与所述加速度计和所述可控开关单元的控制端相连，所述单片机用于根据所述人体加速度信息判断所述人体运动状态，并在人体处于所述低频运动状态时通过控制所述可控开关单元以使所述低频运动能量收集模块收集所述发电模块输出的直流电、并间歇性地对所述储能模块进行充电，以及在人体处于所述高频运动状态时通过控制所述可控开关单元以使所述高频运动能量收集模块收集所述发电模块输出的直流电、并持续性地对所述储能模块进行充电。
  3. 如权利要求2所述的运动能量收集电路，其特征在于，所述可控开关单元包括：
    第一MOSFET，所述第一MOSFET的栅极与所述单片机的第一输出端相连，所述第一MOSFET的源极作为所述可控开关单元的第三端；
    第二MOSFET，所述第二MOSFET的栅极与所述单片机的第二输出端相连，所述第二MOSFET的源极作为所述可控开关单元的第二端，所述第一MOSFET的漏极与所述第二MOSFET的漏极相连，所述第一MOSFET的漏极与所述第二MOSFET的漏极之间具有第一节点，所述第一节点作为所述可控开关单元的第一端。
  4. 如权利要求2或3所述的运动能量收集电路，其特征在于，所述低频运动能量 收集模块包括：
    第一电容，所述第一电容的第一端与所述可控开关单元的第二端相连，所述第一电容的第二端接地；
    第三MOSFET，所述第三MOSFET的源极与所述第一电容的第一端相连；
    第一二极管，所述第一二极管的阳极与所述第三MOSFET的漏极相连，所述第一二极管的阴极与所述储能模块相连；
    驱动单元，所述驱动单元的输出端与所述第三MOSFET的栅极相连，所述驱动单元用于根据所述第一电容两端的电压间歇性地驱动所述第三MOSFET导通和关断，以使所述低频运动能量收集模块间歇性地对所述储能模块进行充电。
  5. 如权利要求4所述的运动能量收集电路，其特征在于，所述驱动单元包括：
    第一电阻和第二电阻，所述第一电阻与所述第二电阻串联后与所述第一电容并联，所述第一电阻与所述第二电阻之间具有第二节点；
    第三电阻，所述第三电阻的一端与所述第一电容的一端相连；
    第二二极管，所述第二二极管的阴极与所述第三电阻的另一端相连，所述第二二极管的阳极与所述第一电容的另一端相连；
    第四电阻，所述第四电阻的一端分别与所述第三电阻的另一端和所述第二二极管的阴极相连；
    放大器，所述放大器的正输入端与所述第四电阻的另一端相连，所述放大器的负输入端与所述第二节点相连，所述放大器的输出端与所述第三MOSFET的栅极相连；
    第五电阻，所述第五电阻连接在所述放大器的正输入端与所述放大器的输出端之间。
  6. 如权利要求1-5中任一项所述的运动能量收集电路，其特征在于，所述高频运动能量收集模块采用LTC3105或LTC3129升压能量收集芯片实现，用于工作时持续性地对所述储能模块充电。
  7. 如权利要求1-6中任一项所述的运动能量收集电路，其特征在于，所述储能模块为超级电容或可充电电池。
  8. 一种便携式电子设备，其特征在于，包括如权利要求1-7中任一项所述的运动能量收集电路。
  9. 如权利要求8所述的便携式电子设备，其特征在于，所述便携式电子设备为可穿戴式电子设备。
  10. 如权利要求9所述的便携式电子设备，其特征在于，所述可穿戴式电子设备包括智能手环、智能手表。
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