WO2020252723A1 - Procédé et appareil de collecte de source d'énergie renouvelable, et dispositif de commande - Google Patents

Procédé et appareil de collecte de source d'énergie renouvelable, et dispositif de commande Download PDF

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Publication number
WO2020252723A1
WO2020252723A1 PCT/CN2019/091997 CN2019091997W WO2020252723A1 WO 2020252723 A1 WO2020252723 A1 WO 2020252723A1 CN 2019091997 W CN2019091997 W CN 2019091997W WO 2020252723 A1 WO2020252723 A1 WO 2020252723A1
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WIPO (PCT)
Prior art keywords
voltage
controller
current signal
renewable energy
weak current
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Application number
PCT/CN2019/091997
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English (en)
Chinese (zh)
Inventor
宋少丽
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武文静
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 武文静 filed Critical 武文静
Priority to CN201980000876.7A priority Critical patent/CN113474742B/zh
Priority to PCT/CN2019/091997 priority patent/WO2020252723A1/fr
Publication of WO2020252723A1 publication Critical patent/WO2020252723A1/fr

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Classifications

    • 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

Definitions

  • This application belongs to the technical field of renewable energy, and in particular relates to a method, device and controller for collecting renewable energy.
  • Renewable energy such as solar energy, hydro energy, wind energy, biomass energy, wave energy, tidal energy, ocean thermal energy, and geothermal energy has many advantages such as rich resources, cleanness, and environmental protection, and can effectively reduce dependence on fossil energy such as petroleum and coal. , And meet the demand for sustainable energy.
  • the embodiments of the present application provide a renewable energy collection method, device, and controller, which can effectively collect renewable energy with weak energy intensity.
  • the first aspect of the embodiments of the present application provides a renewable energy collection method, which is executed by a controller, and the renewable energy collection method includes:
  • the weak current signal includes a millivolt level voltage signal, a nanoamp level current signal, a microamp level current signal, and a weak charge signal. At least one of
  • a current signal with a preset current value is output to charge the energy storage module.
  • the second aspect of the embodiments of the present application provides a controller, including a core, I/O ports, registers, timers, electrical aggregation components, SPI bus, analog-to-digital converter, voltage comparator, PWM chip, and low voltage detection A chip and a computer program stored in the register, and the kernel implements the steps of the renewable energy collection method when the computer program is executed.
  • the third aspect of the embodiments of the present application provides a renewable energy collection device, including:
  • the renewable energy power generation module and the energy storage module are electrically connected to the controller.
  • the renewable energy power generation module includes a weak photovoltaic panel
  • the energy storage module includes at least one of a capacitor, a rechargeable battery, a memory metal, a fuel cell, a primary battery, a secondary battery, and a flash battery .
  • the weak current signal output by the renewable energy power generation module is collected through the I/O port of the controller, and the weak current signal is gathered, and when the voltage of the gathered weak current signal is greater than the preset voltage threshold, the preset current value is output
  • the current signal charges the energy storage module, which can effectively collect weak current signals, and directly collect weak current signals through the I/O port of the controller, which has low power consumption and can effectively reduce power consumption.
  • FIG. 1 is a schematic flowchart of a renewable energy collection method provided by an embodiment of the present application
  • FIG. 2 is another schematic flow chart of the renewable energy collection method provided by the embodiment of the present application.
  • FIG. 3 is another schematic flow chart of the renewable energy collection method provided by the embodiment of the present application.
  • Fig. 4 is a schematic flow diagram of still another method for collecting renewable energy provided by an embodiment of the present application.
  • Fig. 5 is a schematic structural diagram of a controller provided by an embodiment of the present application.
  • An embodiment of the present application provides a renewable energy collection method executed by a controller.
  • the method may be a software program method stored in the controller.
  • the controller can be a central processing unit (Central Processing Unit, CPU), other general-purpose processors, digital signal processors (Digital Signal Processors) Signal Processor, DSP), Application Specific Integrated Circuit (ASIC), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor can be a microprocessor, a microcontroller unit (Microcontroller Unit, MCU), single chip microcomputer (Single Chip Microcomputer) or the processor can also be any conventional processor.
  • the renewable energy collection method includes:
  • Step S101 Collect the weak current signal output by the renewable energy power generation module through the I/O port of the controller; wherein, the weak current signal includes a millivolt voltage signal, a nanoamp current signal, a microamp current signal, and a weak current signal. At least one of the charge signals.
  • the controller has at least one I/O port for connecting with at least one renewable energy power generation module, and each I/O port is connected to a renewable energy power generation module to directly collect the renewable energy through the I/O port.
  • I/O port can be GPIO (General-purpose input/output, general-purpose input and output) port.
  • the renewable energy power generation module includes at least one of a solar power module, a hydropower module, a wind energy module, a biomass energy module, a wave energy module, a tidal energy module, an ocean thermal energy module, and a geothermal energy module.
  • solar power modules can be weak photovoltaic panels or photosensitive elements.
  • the solar power module can convert light signals into electrical signals in a low light environment, and the light intensity range of the light signals in a low light environment can be set to [5lux, 50lux].
  • Weak photovoltaic panels can be silicon solar cells (for example, amorphous silicon solar cells, monocrystalline silicon solar cells, polycrystalline silicon solar cells, etc.), compound cells (for example, gallium arsenide solar cells, cadmium telluride solar cells, etc.), thin film solar cells Batteries (for example, copper indium selenium thin film batteries, copper zinc tin sulfur thin film solar cells, etc.), fuel-sensitized solar cells, organic solar cells, perovskite solar cells, graphene solar cells, quantum dot solar cells, etc.
  • the photosensitive element can be a photodiode, a phototransistor, etc.
  • the renewable energy power generation module includes a weak photovoltaic panel.
  • the method includes:
  • Step S201 Power-on reset the register and timer of the controller according to the weak current signal, and initialize the system clock and user data to wake up the controller; wherein, the system clock is used to start timing after initialization, so The user data includes the preset voltage threshold and the preset current value;
  • Step S202 After waking up the controller, it enters a sleep state.
  • the controller's I/O port collects the weak current signal, it triggers the controller to wake up for a short time by the weak current signal, resets the controller's registers and timers, initializes the system clock and user data, and starts the system clock And load user data, so that the subsequent steps can be carried out normally, after a short time wake up the controller, the controller enters the dormant state again to reduce power consumption, reduce power consumption, so as to maximize the accumulation of more weak current signals to charge the energy storage module.
  • step S201 includes:
  • Step S301 Power-on resetting the register and timer of the controller according to the weak current signal
  • Step S302 define the stack domain
  • Step S303 Initialize the interrupt vector table
  • Step S304 initialize the system clock
  • Step S305 call the entry function
  • Step S306 Initialize the I/O port, SPI bus, analog-to-digital converter, voltage comparator and user data of the controller; wherein, the user data also includes low voltage detection data.
  • steps S301 ⁇ S305 are the startup steps of the software program system solidified in the internal storage space of the controller.
  • the software program system can be written in assembly language, and the entry function includes the main function; calling the main function starts execution
  • the system program enters step S306 to initialize the various hardware and software data inside the controller.
  • the low voltage detection chip inside the controller provides the low voltage detection interrupt function, which can detect the voltage value and the voltage value of the renewable energy power generation module or energy storage module. Power to obtain low-voltage detection data.
  • Step S102 Gather the weak current signals.
  • the controller is integrated with an electric gathering element for gathering weak electric signals.
  • the electric gathering element includes a MOS tube, a charge storage diode, a capacitor, an electric coupling element (Charge-coupled Device, CCD), etc.
  • step S102 includes:
  • the weak electric signal is gathered by the electric gathering element of the controller.
  • Step S103 Detect whether the voltage of the collected weak current signal is greater than a preset voltage threshold.
  • the voltage of the gathered weak current signal can be sampled by the analog-to-digital converter inside the controller, and then the voltage of the gathered weak current signal can be compared with the preset voltage threshold through the voltage comparator inside the controller to detect Whether the voltage of the collected weak current signal is greater than the preset voltage threshold.
  • the preset voltage threshold can be set as a voltage value capable of providing a stable charging voltage and current for the energy storage module according to actual needs.
  • step S103 includes:
  • Step S401 Detect the voltage of the collected weak current signal
  • Step S402 Acquire the voltage rising speed of the collected weak current signal according to the voltage of the weak current signal
  • Step S403 Query the generated power associated with the voltage rising speed in a preset query table
  • Step S404 Track the generated power according to the MPPT algorithm, and when the generated power is greater than a preset power threshold, determine that the voltage of the collected weak current signal is greater than the preset voltage threshold.
  • the voltage of the weak current signal changes with time, and the slope of the curve is calculated.
  • the slope of the curve is proportional to the voltage rise speed of the collected weak current signal, and the voltage rise speed is proportional to the power generation.
  • the preset time period may be a unit time period, for example, 1 second, 1 minute, 1 hour, etc.
  • the preset lookup table is used to record the association relationship between the voltage rise rate of the weak current signal and the power generation power of the renewable energy power generation module.
  • the association relationship may be a mapping relationship;
  • the preset lookup table may be a display lookup table ( Look-Up-Table, LUT), can also be realized by other devices or programs that can output generated power with the same input voltage rise speed as the display look-up table.
  • MPPT Maximum Power Point Tracking (Maximum Power Point Tracking) algorithm tracks the queried generated power.
  • the generated power is greater than the preset power threshold, it is determined that the voltage of the gathered weak current signal is greater than the preset voltage threshold.
  • the preset power threshold can be set according to actual needs. Real-time tracking of power generation through the MPPT algorithm can ensure that the energy storage module is charged after the generation voltage and current of the renewable energy power generation module reach the appropriate value.
  • Step S104 When the voltage of the collected weak current signal is greater than the preset voltage threshold, output a current signal with a preset current value to charge the energy storage module.
  • charging the energy storage module by outputting a current signal with a preset current value can improve charging stability and efficiency, ensure charging safety, and increase the life of the energy storage module.
  • the energy storage module includes at least one of a capacitor, a rechargeable battery, a memory metal, a fuel cell, a primary battery, a secondary battery, and a flash battery.
  • energy storage modules can include capacitors (for example, bile capacitors, farad capacitors, ceramic capacitors, etc.), rechargeable batteries (for example, nickel-metal hydride batteries, lithium batteries, etc.), memory metals, fuel cells, primary batteries, and two At least one of secondary battery, flash battery, etc. can be selected according to the required storage capacity.
  • capacitors for example, bile capacitors, farad capacitors, ceramic capacitors, etc.
  • rechargeable batteries for example, nickel-metal hydride batteries, lithium batteries, etc.
  • memory metals for example, fuel cells, primary batteries, and two At least one of secondary battery, flash battery, etc.
  • the priority of charging the battery can be set according to the voltage rise rate or the generated power, for example, the voltage rise rate is greater than the preset speed or the generated power is greater than the preset preset power
  • the priority of the battery with a large storage capacity it means that the battery with a large storage capacity will be charged first; on the contrary, the priority of the battery with a small storage capacity is set higher than the storage capacity.
  • a battery with a large capacity is to give priority to a battery with a small capacity.
  • the preset speed and preset power can be set according to actual needs, and the preset power is greater than the preset power threshold.
  • step S104 includes:
  • the PWM chip of the controller When the voltage of the collected weak current signal is greater than the preset voltage threshold, the PWM chip of the controller is awakened, and the collected weak current signal is converted into a current signal of a preset current value by the PWM chip.
  • the module can be charged.
  • the PWM (Pulse The Width Modulation (Pulse Width Modulation) chip charges the energy storage module, and the PWM chip converts the voltage waveform and current waveform of the gathered weak current signal into a waveform suitable for charging the energy storage module to charge the energy storage module.
  • the renewable energy collection method further includes:
  • the external interrupt signal includes an optical synchronization signal or a low illumination signal
  • the optical synchronization signal and the low illumination signal are used to trigger the controller to control the energy storage module to output a voltage signal of a preset voltage value to emit light
  • the load is powered, and the low voltage signal is sent by the low voltage detection chip of the controller.
  • the luminous load can be street lamps, indoor lighting, landscape lights, billboard light boxes and other lamps.
  • the light synchronization signal can be sent by other luminous devices except the luminous load to make the luminous load and other luminous devices emit light simultaneously or Flashing.
  • the low-illuminance signal can be sent out by an illuminance meter or a light sensor when it detects that the ambient illuminance is lower than a preset illuminance threshold to make the luminous load glow or flicker, and the illuminance meter or light sensor is connected to the controller.
  • the preset illuminance threshold can be set according to actual needs, for example, 0lux ⁇ 100lux.
  • the low-illuminance signal can also be sent by the system clock or timer in the evening period, and the evening period can be set according to actual needs, for example, 18:00 ⁇ 6:00.
  • the low voltage detection chip is used to detect the voltage and power of the energy storage module.
  • the voltage or power of the energy storage module reaches a certain level (for example, the voltage is greater than or equal to 80% of the rated voltage of the energy storage module, and the power is greater than or equal to When the capacity of the energy storage module is 80%), the low-voltage detection chip outputs a low-voltage signal to wake up the controller and make the controller enter the working state to supply power to the load.
  • the load can be any load whose rated working voltage is within the output voltage range of the energy storage module, such as candle lights, automatic trash can motors, door lock motors, wireless communication modules (for example, Bluetooth modules, WiFi modules, infrared modules, etc.) Smart door lock motors, human sensors, smoke sensors, etc.
  • the energy storage module such as candle lights, automatic trash can motors, door lock motors, wireless communication modules (for example, Bluetooth modules, WiFi modules, infrared modules, etc.) Smart door lock motors, human sensors, smoke sensors, etc.
  • the weak current signal output by the renewable energy power generation module is collected through the I/O port of the controller, and the weak current signal is gathered, and when the voltage of the gathered weak current signal is greater than the preset voltage threshold, the preset current value is output
  • the current signal charges the energy storage module, which can effectively collect weak current signals, and directly collect weak current signals through the I/O port of the controller, which has low power consumption and can effectively reduce power consumption.
  • an embodiment of the present application provides a controller 100, which includes a core 1, an I/O port 2, a register 3, a timer 4, an electrical aggregation component 5, an SPI bus 6, and an analog-to-digital converter. 7. Voltage comparator 8, PWM chip 9, low-voltage detection chip 10, and computer program 11 stored in register 3 and running on core 1, such as a renewable energy collection program.
  • the kernel 1 executes the computer program 11, the steps in the foregoing embodiments of the renewable energy collection method are implemented, such as steps S101 to S104 shown in FIG. 1.
  • the computer program may be divided into one or more modules/units, and the one or more modules/units are stored in the memory and executed by the kernel to complete the application.
  • One or more modules/units may be a series of computer program instruction segments capable of completing specific functions, and the instruction segments are used to describe the execution process of the computer program in the controller.
  • a computer program can be divided into an acquisition module, an aggregation module, a detection module, and a charging module. The specific functions of each module are as follows:
  • the acquisition module is used to collect the weak current signal output by the renewable energy power generation module through the I/O port of the controller; wherein the weak current signal includes a millivolt level voltage signal, a nanoamp level current signal, and a microamp level current signal And at least one of weak charge signals;
  • the aggregation module is used to aggregate the weak current signals
  • the detection module is used to detect whether the voltage of the collected weak current signal is greater than a preset voltage threshold
  • the charging module is configured to output a current signal with a preset current value to charge the energy storage module when the voltage of the collected weak current signal is greater than a preset voltage threshold.
  • the computer program can also be divided into the following modules:
  • the wake-up module is used to reset the registers and timers of the controller according to the weak current signal and initialize the system clock and user data to wake up the controller; wherein, the system clock is used to start timing after initialization ,
  • the user data includes the preset voltage threshold and the preset current value;
  • the sleep module is used to enter the sleep state after waking up the controller.
  • the wake-up module is also used to wake up the system and enter the working state when an external interrupt signal or a low-voltage signal is received.
  • the controller may include, but is not limited to the above-mentioned devices.
  • FIG. 5 is only an example of the controller, and does not constitute a limitation on the controller. It may include more or less components than shown in the figure, or combine certain components, or different components, for example
  • the controller may also include a system bus, a bus bridge, a voltage stabilizing circuit, or a chip.
  • An embodiment of the present application also provides a renewable energy harvesting device, including the controller;
  • the renewable energy power generation module and the energy storage module are electrically connected to the controller.
  • the disclosed device/controller and method can be implemented in other ways.
  • the device/controller embodiments described above are merely illustrative, for example, the division of modules or units is only a logical function division, and there may be other divisions in actual implementation, such as multiple units or components. Can be combined or integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the integrated module/unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • this application implements all or part of the processes in the above-mentioned embodiments and methods, and can also be completed by instructing relevant hardware through a computer program.
  • the computer program can be stored in a computer-readable storage medium. When the program is executed by the processor, the steps of the foregoing method embodiments can be implemented.
  • the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file, or some intermediate forms.
  • the computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signals, telecommunications signals, and software distribution media.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • electrical carrier signals telecommunications signals
  • software distribution media any entity or device capable of carrying the computer program code
  • recording medium U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signals, telecommunications signals, and software distribution media.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

La présente invention est applicable au domaine technique des sources d'énergie renouvelables, et concerne un procédé et un appareil de collecte de source d'énergie renouvelable, et un dispositif de commande. Selon des modes de réalisation de la présente invention, des signaux de courant faible émis par un module de production d'énergie renouvelable sont collectés au moyen d'un port E/S du dispositif de commande, et les signaux de courant faible sont accumulés ; et lorsque la tension du signal de courant faible accumulé est supérieure à un seuil de tension prédéfini, un module de stockage d'énergie est chargé par émission d'un signal de courant d'une valeur de courant prédéfinie. La collecte efficace de signaux de courant faible peut être obtenue ; de plus, les signaux de courant faible sont directement collectés au moyen du port E/S du dispositif de commande, la consommation d'énergie est faible, et la perte d'énergie peut être efficacement réduite.
PCT/CN2019/091997 2019-06-20 2019-06-20 Procédé et appareil de collecte de source d'énergie renouvelable, et dispositif de commande WO2020252723A1 (fr)

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CN201980000876.7A CN113474742B (zh) 2019-06-20 2019-06-20 一种可再生能源采集方法、装置及控制器
PCT/CN2019/091997 WO2020252723A1 (fr) 2019-06-20 2019-06-20 Procédé et appareil de collecte de source d'énergie renouvelable, et dispositif de commande

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PCT/CN2019/091997 WO2020252723A1 (fr) 2019-06-20 2019-06-20 Procédé et appareil de collecte de source d'énergie renouvelable, et dispositif de commande

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