CN214429295U - 4G data acquisition module power supply circuit based on photovoltaic inverter - Google Patents
4G data acquisition module power supply circuit based on photovoltaic inverter Download PDFInfo
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- CN214429295U CN214429295U CN202120788880.9U CN202120788880U CN214429295U CN 214429295 U CN214429295 U CN 214429295U CN 202120788880 U CN202120788880 U CN 202120788880U CN 214429295 U CN214429295 U CN 214429295U
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Abstract
The utility model discloses a 4G data acquisition module power supply circuit based on photovoltaic inverter, including module power supply circuit, soft start circuit, control circuit includes MCU, the output of module power supply circuit's input connection dc-to-ac converter, the output of soft start circuit's input connection module power supply circuit, soft start circuit connection 4G data acquisition module for provide the electric energy for 4G data acquisition module, control circuit connects module power supply circuit, is used for control module power supply circuit's output or ends. This application prepares module power supply circuit alone for 4G data acquisition module, has overcome the problem that can appear when using same power with the control circuit power and power is not enough, carries out soft start to module power supply circuit, and too big surge current when reducing the module and starting avoids drawing down the supply voltage of dc-to-ac converter.
Description
Technical Field
The utility model belongs to the technical field of industry internet of things and specifically relates to a 4G data acquisition module power supply circuit based on photovoltaic inverter is related to.
Background
At present, photovoltaic power generation is rapidly developed in recent years, a household roof photovoltaic power station is a photovoltaic power station emerging in recent years, the cost is low, the construction is flexible, the occupied area is small, the household roof photovoltaic power station becomes a new energy source which can be selected by common households, the data acquisition module is used for acquiring the operation data of a single photovoltaic inverter, the inverter supplies power for direct current or alternating current, and the operation data is remotely transmitted to an intelligent operation and maintenance cloud platform of the photovoltaic power station through a 4G module.
However, the requirement of the 4G data acquisition module on the power supply is higher than that of the 2G data acquisition module on the power supply, and meanwhile, the electric leakage condition of the inverter is difficult to solve, and under the condition, the power supply of the inverter cannot meet the requirement of the 4G data acquisition module on the power supply.
Therefore, under the condition of power supply of the inverter, a stable power supply is provided for the 4G data acquisition module, which is a problem to be solved urgently at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a 4G data acquisition module supply circuit based on photovoltaic inverter for 4G data acquisition module prepares module power supply circuit alone, has overcome the problem that can appear when using same power with the control circuit power, carries out soft start to module power supply circuit, reduces the too big surge current when the module starts, avoids drawing down the supply voltage of dc-to-ac converter.
The above technical scheme of the utility model can be realized through following technical scheme to the purpose:
the utility model provides a 4G data acquisition module power supply circuit based on photovoltaic inverter, control circuit, module power supply circuit, soft start circuit connect gradually, control circuit and module power supply circuit are connected, the input connection photovoltaic inverter's of module power supply circuit output, its output connection soft start circuit's input, control circuit is used for the mode of control module power supply circuit, the output of soft start circuit is used for providing the power for the 4G module.
The present application is further configured to further include a control power circuit for providing electrical power to the control circuit.
The inverter further comprises an energy storage circuit, wherein the energy storage circuit is connected with the control circuit and the control power circuit and used for obtaining electric energy from the inverter or providing electric energy for the control power circuit according to a control signal of the control circuit.
The application is further provided with a voltage detection circuit which is connected with the control circuit and the inverter and used for detecting the output voltage of the inverter and transmitting the detection result to the control circuit.
The application further sets up to the module power supply circuit including the anti-reverse connection circuit, energy storage filter circuit, the module control circuit that connect gradually, and the input of anti-reverse connection circuit is connected the output of dc-to-ac converter, and module control circuit's enable end is connected with control circuit for according to control circuit's enable signal, provide the power or stop the power supply for the 4G module.
This application further sets up to still including feedback circuit, is connected with module control circuit for detect module control circuit's output, and feed back to module control circuit.
The application is further configured to: the reverse connection preventing circuit comprises a transient diode and a first switching tube, wherein one end of the transient diode is connected with the positive output end of the inverter, and the other end of the transient diode is connected with the negative output end of the inverter; the input end of the first switch tube is connected with the positive output end of the inverter, the control end of the first switch tube is connected with the negative output end of the inverter through a first resistor, the output end of the first switch tube is connected with the first input end of the module control circuit, and a second resistor is connected in parallel between the control end and the output end of the first switch tube and used for preventing reverse connection.
The application further sets up to energy storage filter circuit and includes energy storage filter capacitor, and module control circuit's first input is connected to energy storage filter capacitor's one end, and the other end is connected to the negative output of dc-to-ac converter for carry out energy storage and filtering.
This application further sets up to soft start circuit including the first tank circuit of soft start, starting circuit, the soft second tank circuit that connects gradually, the first tank circuit of soft start's input connection module power supply circuit's of soft start output, and the first tank circuit of soft start stores energy, and when the energy storage of first tank circuit reached certain voltage, starting circuit opened, stored energy for the soft second tank circuit of soft start.
This application further sets up to energy storage circuit includes energy storage switch tube, energy storage capacitor, and energy storage switch tube's control end connection control circuit switches on or ends according to control circuit's control signal control energy storage switch tube, and when not uploading data, the energy storage switch tube switches on, and energy storage capacitor charges, and when the dialing, the energy storage switch tube ends, and energy storage capacitor discharges to provide the electric energy for control circuit.
Compared with the prior art, the beneficial technical effects of this application do:
1. the power supply can output 2A current by independently configuring the module power supply circuit for the 4G data acquisition module;
2. furthermore, the normal work of data interaction during module dialing is ensured through the equipment storage circuit, and the restarting of MCU power supply insufficiency is avoided;
3. further, this application reduces data acquisition unit's consumption through setting up soft start circuit, prevents that the protection of leaking current from appearing in the dc-to-ac converter.
Drawings
FIG. 1 is a schematic diagram of a photovoltaic inverter supply circuit configuration according to an exemplary embodiment of the present application;
FIG. 2 is a schematic diagram of a modular power circuit according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a modular power circuit according to one embodiment of the present application;
FIG. 4 is a schematic diagram of a soft start circuit of an embodiment of the present application;
FIG. 5 is a schematic of a tank circuit according to an embodiment of the present application.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
The utility model provides a 4G data acquisition module power supply circuit based on photovoltaic inverter, as shown in figure 1, including module power supply circuit, soft start circuit, a control circuit includes MCU, the output of module power supply circuit's input connection dc-to-ac converter, the output of soft start circuit's input connection module power supply circuit, the output connection 4G module of soft start circuit, be used for providing the electric energy for the 4G module, control circuit connects module power supply circuit, be used for controlling module power supply circuit's output or end.
The 4G module is connected with a control circuit (MCU) and used for data interaction.
Based on photovoltaic inverter, still be provided with control power supply circuit, energy storage circuit, voltage detection circuit, control power supply circuit is connected with control circuit for provide the electric energy for control circuit. The energy storage circuit is connected with the control circuit and the control power circuit and used for charging when the work is not needed, the energy storage circuit obtains electric energy from the inverter and works when the work is needed, namely module dialing is carried out, or the data acquisition module interacts with cloud data, the energy storage circuit discharges, and a stable power supply is provided for the control circuit.
And the voltage detection circuit is connected with the control circuit and the inverter and used for detecting the output of the inverter and transmitting the detection result to the control circuit, and the control circuit performs feedback control according to the detection result.
As shown in fig. 2, the module power circuit includes an anti-reverse connection circuit, an energy storage filter circuit, a module control circuit, and a feedback circuit,
the anti-reverse connection circuit, the energy storage filter circuit and the module control circuit are sequentially connected, and the feedback circuit is connected with one output end of the module control circuit and used for detecting the output of the module control circuit and feeding the detection structure back to the module control circuit.
The reverse connection preventing circuit is used for preventing the reverse connection of the power supply, and the energy storage filter circuit is used for storing and filtering the output of the inverter so as to provide stable voltage for the module control circuit.
The enabling end of the module control circuit is connected with the control circuit and used for controlling the output of the module control circuit according to the enabling signal of the control circuit and respectively controlling the 4G module to provide power or stop supplying power.
The input of the module power circuit represents the output of the inverter, and the output of the module power circuit represents the input of the soft start circuit.
And the PFM mode represents the working mode of the module control circuit.
In an embodiment of the present application, as shown in fig. 3, in the module power supply circuit, the reverse connection preventing circuit includes a transient diode D10, a switch Q13, and a resistor R62/R63, one end of the transient diode D10 is connected to the first output terminal of the inverter, the other end is connected to the power ground DGND, the control terminal of the switch Q13 is connected to the power ground DGND through a first resistor R63, the input terminal thereof is connected to the first output terminal of the inverter, the output terminal thereof is connected to the input terminal of the energy storage filter circuit, and a second resistor R62 is connected between the output terminal and the control terminal thereof.
The energy storage filter circuit comprises three capacitors EC6/EC9/C21, wherein the first capacitor EC6 and the second capacitor EC9 are electrolytic capacitors and are used for storing electric energy, and the third capacitor C21 is a filter capacitor. One end of the first capacitor EC6, one end of the second capacitor EC9 and one end of the third capacitor C21 are connected with the output end of the anti-reverse connection circuit and the first input end of the module control circuit, the other end of the first capacitor EC6, the other end of the second capacitor EC9 and the other end of the third capacitor C21 are connected with the power ground DGND,
the module control circuit comprises a control chip U1, and the output of the energy storage filter circuit is connected with the first input end of the control chip U1.
The control chip U1 is connected with a switch circuit at an enabling end, the switch circuit comprises an NPN switch triode Q29, the base electrode of the triode Q29 is connected with an enabling signal output end of the control circuit through a third resistor R25, the collector electrode of the triode Q29 is connected with an enabling end EN of the control chip U1, the emitter electrode of the triode Q is connected with a power ground DGND, a fourth resistor R24 is connected between the collector electrode and the emitter electrode, and a fifth resistor R26 is connected between the base electrode and the emitter electrode.
When the enable signal output by the control circuit is high, the triode Q29 is conducted, the enable end EN of the control chip U1 becomes low, and the control chip U1 stops working; when the enable signal output by the control circuit is low, the triode Q29 is cut off, the enable terminal EN of the control chip U1 becomes high, and the control chip U1 operates.
The output end of the control chip U1 is connected with one end of an inductor L1, the other end of the inductor L1 is connected with one end of a fourth energy storage capacitor EC3, and one end of the fourth energy storage capacitor EC3 is connected with a power ground for outputting a power supply V-GPRS. The fourth energy storage capacitor EC3 is a tantalum capacitor.
And a feedback circuit is also connected to the output end of the power supply V-GPRS, and comprises a resistor R14/R18/R13/a capacitor C16, the resistor R14/R18 are connected in series, the series connection point of the resistor R14/the capacitor C18 is simultaneously connected with one feedback input end of a control chip U1, the resistor R13/the capacitor C16 are connected in series and then connected in parallel with two ends of a resistor R14, the other end of the resistor R14 is connected with the output end of the power supply V-GPRS, and the other end of the resistor R18 is connected with the ground DGND of the power supply. The feedback circuit is used for detecting the output size of the control chip U1 and feeding back the detection result to the control chip U1, so that the output of the control chip is controlled in a required range.
The control chip works in a PFM mode, the light load efficiency is high, and the conduction loss is small.
As shown in fig. 4, the soft start circuit includes a first energy storage circuit, a start circuit, and a second energy storage circuit, where the first energy storage circuit includes an energy storage capacitor EC12, one end of the first energy storage circuit is connected to the output end of the power supply V-GPRS, and the other end of the first energy storage circuit is connected to the ground DGND. For storing the output power of the control chip U1.
The starting circuit comprises a switch tube Q6, a capacitor C35/a resistor R44, the capacitor C35/the resistor R44 are connected in series, one end of a capacitor C35 is connected with a power supply V-GPRS output end, one end of a resistor R44 is connected with a power supply ground DGND, the series connection point of the capacitor C35/the resistor R44 is connected with a control end of a switch tube Q6, the input end of the switch tube Q6 is connected with the power supply V-GPRS output end, and the output end of the switch tube Q6 is connected with the input end of the second energy storage circuit.
When the power supply V-GPRS is switched on, the capacitor C35 is charged, and when the conduction voltage of the switching tube Q6 is charged, the switching tube Q6 is conducted, so that soft start is realized.
The second energy storage circuit comprises four tantalum capacitors connected in parallel and used for storing energy. The energy storage voltage is V-GSM.
As shown in fig. 5, the energy storage circuit includes a switching tube Q2 and an energy storage capacitor, a control terminal of the switching tube Q2 is connected to an output terminal of the control circuit for controlling the on/off of the switching tube Q2, an input terminal of the switching tube Q2 is connected to an output terminal of the inverter, and an output terminal thereof is connected to the energy storage capacitor, where the input terminal and the output terminal of the switching tube Q2 are for convenience of description, the switching tube Q2 is fully used as a switch, when data is not uploaded, the switching tube Q2 is turned on to charge the energy storage capacitor, and when data is dialed, the switching tube Q2 is turned off and the energy storage capacitor is discharged. The control of the control power supply circuit is realized.
The voltage detection circuit comprises a voltage division circuit and is used for monitoring whether the output voltage of the inverter falls or not, and if the output voltage of the inverter falls, the falling time information is uploaded to a platform and is used for recording the fluctuation of the power supply voltage of the inverter.
The control power circuit adopts an LDO chip to convert the output voltage of the inverter into 3.3V and provide power for the control chip.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a 4G data acquisition module power supply circuit based on photovoltaic inverter which characterized in that: the photovoltaic grid-connected inverter control system comprises a control circuit, a module power circuit and a soft start circuit, wherein the module power circuit and the soft start circuit are sequentially connected, the control circuit is connected with the module power circuit, the input of the module power circuit is connected with the output of a photovoltaic inverter, the output of the module power circuit is connected with the input of the soft start circuit, the control circuit is used for controlling the working mode of the module power circuit, and the output of the soft start circuit is used for providing power for a 4G data acquisition module.
2. The photovoltaic inverter-based 4G data acquisition module power supply circuit of claim 1, wherein: the control power supply circuit is used for supplying electric energy to the control circuit.
3. The photovoltaic inverter-based 4G data acquisition module power supply circuit of claim 2, wherein: the energy storage circuit is connected with the control circuit and the control power circuit and used for obtaining electric energy from the inverter or providing electric energy for the control power circuit according to the control signal of the control circuit.
4. The photovoltaic inverter-based 4G data acquisition module power supply circuit of claim 1, wherein: the voltage detection circuit is connected with the control circuit and the inverter and used for detecting the output voltage of the inverter and transmitting the detection result to the control circuit.
5. The photovoltaic inverter-based 4G data acquisition module power supply circuit of claim 1, wherein: the module power circuit comprises an anti-reverse connection circuit, an energy storage filter circuit and a module control circuit which are sequentially connected, wherein the input of the anti-reverse connection circuit is connected with the output of the inverter, and the enabling end of the module control circuit is connected with the control circuit and used for providing power for the 4G module or stopping power supply according to the enabling signal of the control circuit.
6. The photovoltaic inverter-based 4G data acquisition module power supply circuit of claim 5, wherein: the module control circuit is connected with the input end of the module control circuit and used for detecting the output of the module control circuit and feeding back the output to the module control circuit.
7. The photovoltaic inverter-based 4G data acquisition module power supply circuit of claim 5, wherein: the reverse connection preventing circuit comprises a transient diode and a first switching tube, wherein one end of the transient diode is connected with the positive output end of the inverter, and the other end of the transient diode is connected with the negative output end of the inverter; the input end of the first switch tube is connected with the positive output end of the inverter, the control end of the first switch tube is connected with the negative output end of the inverter through a first resistor, the output end of the first switch tube is connected with the first input end of the module control circuit, and a second resistor is connected in parallel between the control end and the output end of the first switch tube and used for preventing reverse connection.
8. The photovoltaic inverter-based 4G data acquisition module power supply circuit of claim 5, wherein: the energy storage filter circuit comprises an energy storage filter capacitor, one end of the energy storage filter capacitor is connected with the first input end of the module control circuit, and the other end of the energy storage filter capacitor is connected to the negative output end of the inverter and used for storing energy and filtering.
9. The photovoltaic inverter-based 4G data acquisition module power supply circuit of claim 1, wherein: the soft start circuit comprises a soft start first energy storage circuit, a start circuit and a soft start second energy storage circuit which are sequentially connected, wherein the input of the soft start first energy storage circuit is connected with the output of the module power circuit, the soft start first energy storage circuit stores energy, and when the energy storage of the first energy storage circuit reaches a certain voltage, the start circuit is opened to store energy for the soft start second energy storage circuit.
10. The photovoltaic inverter-based 4G data acquisition module power supply circuit of claim 1, wherein: the energy storage circuit comprises an energy storage switch tube and an energy storage capacitor, the control end of the energy storage switch tube is connected with the control circuit, the energy storage switch tube is controlled to be switched on or switched off according to a control signal of the control circuit, when data are not uploaded, the energy storage switch tube is switched on, the energy storage capacitor is charged, when dialing is carried out, the energy storage switch tube is switched off, and the energy storage capacitor is discharged, so that electric energy is provided for the control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120788880.9U CN214429295U (en) | 2021-04-16 | 2021-04-16 | 4G data acquisition module power supply circuit based on photovoltaic inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120788880.9U CN214429295U (en) | 2021-04-16 | 2021-04-16 | 4G data acquisition module power supply circuit based on photovoltaic inverter |
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| Publication Number | Publication Date |
|---|---|
| CN214429295U true CN214429295U (en) | 2021-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120788880.9U Active CN214429295U (en) | 2021-04-16 | 2021-04-16 | 4G data acquisition module power supply circuit based on photovoltaic inverter |
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|---|---|
| CN (1) | CN214429295U (en) |
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2021
- 2021-04-16 CN CN202120788880.9U patent/CN214429295U/en active Active
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