Anti-countercurrent control device and inverter output power control device
By integrating communication interaction modules, microcontroller units and power metering modules in the anti-countercurrent control device, the problem of real-time monitoring and remote adjustment in the prior art is solved, real-time anti-countercurrent processing of the circuit and interconnection with the inverter are realized, and the system's real-time processing capability and remote adjustment function are improved.
Patent Information
- Application Number
- CN202421264215.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-06-04
AI Technical Summary
The existing anti-countercurrent control devices cannot monitor the circuit's anti-countercurrent effect in real time, cannot remotely adjust the limiting power and current, and cannot directly interconnect with the inverter.
A countercurrent control device is designed, including a communication interaction module, a microcontroller unit and an energy metering module. By receiving and processing information data in real time, real-time anti-countercurrent processing and monitoring of the circuit is realized, and the communication interaction module is interconnected with the inverter to realize remote adjustment function.
It improves information reception sensitivity and data acquisition accuracy, enhances real-time processing capabilities, realizes the function of regulating and limiting power and current, and can be directly interconnected with the inverter.
Smart Images
Figure CN222884357U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power electronics, in particular to an anti-backflow control device and a device for controlling inverter output power. Background Art
[0002] An inverter is a converter that converts DC power into constant frequency and voltage or frequency and voltage regulated AC power. In addition to the output power of the inverter being used by the user at home, a small portion is allowed to be output to the public power grid. Therefore, by installing an anti-backflow control device in the circuit, the output power of the inverter can be controlled to prevent excessive power from being output to the public power grid in scenarios such as photovoltaic energy storage. During use, the power size and direction of the network access port collected by the meter are read through RS485 communication, and the output power is adjusted to achieve the anti-backflow function.
[0003] In the process of implementing the utility model, the inventor found that there are at least the following problems in the related technology:
[0004] When using the anti-backflow control device, users cannot monitor the anti-backflow effect of the circuit in real time in various scenarios. Even if the user knows that the circuit anti-backflow control is not ideal, the anti-backflow control device has no data processing and main control functions and cannot remotely adjust the power and current. In the scenario of photovoltaic energy storage, the anti-backflow control device requires another collector and cannot be directly connected to the inverter. Utility Model Content
[0005] The utility model provides a backflow prevention control device and a device for controlling inverter output power, so as to at least solve the problem in the prior art that the backflow prevention control device cannot implement a monitoring circuit and cannot remotely adjust and limit power and current.
[0006] In the first aspect, an embodiment of the utility model provides an anti-backflow control device, which includes: a communication interaction module, including at least one communication interaction device, the communication interaction device is connected to a microcontroller unit, and is used to receive in real time information data sent from other communication interaction devices paired with the communication interaction device, and send the information data to the microcontroller unit; a microcontroller unit, the microcontroller unit is connected to the communication interaction module and an electric energy metering module, and is used to receive in real time the information data transmitted by the communication interaction device, and perform anti-backflow processing on the circuit according to the information data; an electric energy metering module, and is used to measure in real time the circuit information after the anti-backflow processing; an AC / DC converter, connected to the communication interaction module, the microcontroller unit, and the electric energy metering module, and is used to supply power to the communication interaction module, the microcontroller unit, and the electric energy metering module.
[0007] In a second aspect, an embodiment of the utility model provides a device for controlling the output power of an inverter, the device comprising: a photovoltaic panel, the photovoltaic panel is connected to an inverter with a communication interaction module, and is used to convert sunlight into direct current, and input the direct current into the inverter with the communication interaction module; an inverter with a communication interaction module is connected to the communication interaction module of an anti-backflow control device, and is used to convert the direct current into alternating current, power a circuit, and send circuit information in the circuit to the communication interaction module of the anti-backflow control device; the communication interaction module of the anti-backflow control device includes at least one communication interaction device, and is used to receive in real time information from a communication interaction device paired with the communication interaction device. The circuit information sent by the inverter with a communication interaction module is sent to the micro control unit of the anti-backflow control device; the micro control unit of the anti-backflow control device is used to receive the circuit information transmitted by the communication interaction device of the anti-backflow control device in real time, and perform anti-backflow monitoring and processing on the circuit based on the circuit information; the electric energy metering module of the anti-backflow control device is used to measure the voltage, current, temperature and circuit status of the circuit in real time; the AC / DC converter of the anti-backflow control device is connected to the communication interaction module, the micro control unit and the electric energy metering module, and is used to supply power to the communication interaction module, the micro control unit and the electric energy metering module.
[0008] The beneficial effects of the embodiments of the utility model are: by optimizing the circuit design of the anti-backflow control device, the information receiving sensitivity and data collection accuracy are improved, thereby enhancing the real-time processing capability, while also increasing the operating frequency of the microcontroller unit, achieving the adjustment and limitation of power and current, and being able to be interconnected with the inverter. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0010] Figure 1 A schematic diagram of a connection structure of an example of an anti-backflow control device according to an embodiment of the utility model is shown;
[0011] Figure 2 A schematic diagram of the connection structure of the anti-backflow control device according to an embodiment of the utility model used in conjunction with a photovoltaic panel is shown;
[0012] Figure 3 A schematic diagram of a connection structure with an LED of an example of an anti-backflow control device according to an embodiment of the utility model is shown;
[0013] Figure 4 A schematic diagram of a connection structure with buttons of an example of an anti-backflow control device according to an embodiment of the utility model is shown;
[0014] Figure 5 A schematic diagram of the connection structure of an example of a device for controlling inverter output power according to an embodiment of the utility model is shown. DETAILED DESCRIPTION
[0015] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0016] Figure 1 A schematic diagram of the connection structure of an example of an anti-backflow control device according to an embodiment of the utility model is shown.
[0017] like Figure 1 As shown, the anti-backflow control device includes: a communication interaction module 110, a micro control unit 120, an electric energy metering module 130, and an AC / DC converter 140. Specifically, considering that the anti-backflow control device in the prior art can measure electric energy in both directions, but only provides RS485 interface query, in order to solve the defects of the prior art, the anti-backflow control device is configured with a communication interaction module 110, one end of the communication interaction module 110 is connected to other paired communication interaction devices, and the other end is connected to the micro control unit 120. When in use, the communication interaction module 110 turns on the network search mode, searches for a pairable inverter with a communication interaction device, and the communication interaction module 110 of the anti-backflow control device can realize the real-time transmission of information data after being paired with the inverter with the communication interaction device. After obtaining the transmitted information data, the communication interaction module 110 transmits the information data to the micro control unit 120 in real time to improve the collection accuracy of the information data.
[0018] The microcontrol unit 120 continuously and in real time receives information data of the circuit sent by the communication interaction module 110. With the latest real-time data, the microcontrol unit 120 can efficiently perform corresponding real-time control processing to improve the working frequency of the anti-backflow control device. When the communication interaction module 110 does not send information data, the microcontrol unit 120 can adopt a standby state to reduce power consumption under real-time control processing. After receiving the information data, the microcontrol unit 120 performs identification processing to adjust and limit power and current.
[0019] The electric energy metering module 130 is configured in the circuit downstream of the microcontroller unit 120. Since the microcontroller unit 120 may have adjusted the circuit output power, it is necessary to measure the circuit information after the anti-backflow processing in real time. It is precisely because the anti-backflow control device of the present application also has a communication interaction module 110 that the circuit information measured in real time by the electric energy metering module 130 can be sent to other communication interaction devices paired with the communication interaction module 110 through the communication interaction module 110 after the anti-backflow processing of the microcontroller unit 120. That is to say, the communication interaction module 110, the microcontroller unit 120, and the electric energy metering module 130 in the anti-backflow control device of the present application can realize a complete set of functional closed loops, including: real-time measurement of circuit information in the photovoltaic energy storage scenario. Further, after obtaining the real-time circuit information, the communication interaction module 110 can be used to transmit the circuit information to other communication interaction devices (for example, the user's control device), and the circuit information can be used as a numerical reference for the user to issue a circuit output power control instruction. And the anti-backflow control device of the present application can directly obtain the user's circuit output power control instruction through the communication interaction module 110, and use the micro control unit 120 to process the circuit output power control instruction to realize the anti-backflow control of the circuit. After adjusting the circuit output power, the current and voltage are transmitted to the current transformer terminal and the AC alternating current terminal. Therefore, the present application optimizes the circuit design of the anti-backflow control device, improves the information receiving sensitivity, improves the data acquisition accuracy, and thus enhances the real-time processing capability, while improving the operating frequency of the micro control unit, realizing the adjustment and limiting of power and current, and can be interconnected with the inverter. Finally, the AC / DC converter supplies power to the communication interaction module 110, the micro control unit 120, and the electric energy metering module 130 to ensure the stable operation of the anti-backflow control device.
[0020] The detailed description of the above functional closed loop of the present application is as an implementation method, and the anti-backflow control device of the present application is applied to the real photovoltaic energy storage scenario, such as Figure 2 , which shows a schematic diagram of the connection structure of the anti-backflow control device according to an embodiment of the utility model when used in conjunction with a photovoltaic panel.
[0021] The other communication interaction device paired with the communication interaction module 110 is an inverter device 210 with a communication interaction device. The photovoltaic panel stores electricity under the sun, and then the inverter device 210 with the communication interaction device sends the circuit information in the circuit, such as the voltage, current, temperature and status of the circuit, to the anti-backflow control device through the paired communication interaction module. At this time, after the communication interaction module 110 receives the information of the voltage, current, temperature and status of the circuit, it transmits it to the micro control unit 120 in real time. The micro control unit 120 is awakened by the sent circuit information and performs anti-backflow monitoring processing. Then the electric energy metering module 130 measures the real-time circuit information in the circuit. The whole process is mainly based on the "monitoring" of anti-backflow control.
[0022] As another implementation, the anti-backflow control device of the present application is applied to the monitoring scenario of the user end, and the electric energy metering module 130 is used to measure the output power of the circuit after adjustment in real time, and the circuit information of the photovoltaic energy storage is measured, and the communication interaction module 110 is used to send it to the paired user's monitoring device. At this time, after the user sees the information of the circuit voltage, current, temperature and circuit status at this time, the corresponding circuit output power control instruction is issued, and similarly, it is also transmitted by the communication interaction module 110. The micro control unit 120 is used to receive the circuit output power control instruction transmitted by the communication interaction device in real time, obtain the circuit output power control instruction and execute it, adjust the output power of the circuit based on the circuit output power control instruction, control the output power of the entire circuit, and realize the "control" of the entire anti-backflow control.
[0023] As an implementation mode, the communication interaction module 110 or the communication interaction module 210 listed above specifically includes Bluetooth and WIFI. If the cost permits, you can try to use mobile broadband communication, or you can use Star Flash communication for interaction.
[0024] Bluetooth has a short communication distance and is suitable for installation by installers. WIFI has a wide transmission range and is suitable for any scenario of the user. For example, the user's mobile phone can be used as a monitoring device to facilitate the viewing of real-time circuit information in the circuit and the issuance of circuit output power control instructions.
[0025] Figure 3 The figure shows a schematic diagram of the connection structure of the anti-backflow control device with LED according to an embodiment of the utility model. Figure 3As shown, the anti-backflow control device of the present application is also equipped with an LED signal light for displaying different colors during anti-backflow processing. When the photovoltaic energy storage scene is connected to the grid for power generation, the LED signal light displays green when the electric energy is output to the public grid, and displays red at other times. Similarly, different display lights can be configured for different scene states according to needs, so that when users or electric field monitors see the LED signal light, they can directly know the current working status of the anti-backflow control device.
[0026] Figure 4 The figure shows a schematic diagram of the connection structure with buttons of the anti-backflow control device according to an embodiment of the utility model. Figure 4 As shown, the anti-backflow control device of the present application is also configured with a button, which is used to switch the working mode of the communication interaction module of the anti-backflow device, for example, there are STA mode and AP mode. STA mode is the normal working mode, which is the abbreviation of Station. In this mode, the anti-backflow control device acts as a terminal station device in a wireless network. In STA mode, the device itself does not accept wireless access. AP mode is the construction and installation mode. AP is the abbreviation of Access Point, that is, a wireless access point. It is the central node of a wireless network and can be regarded as a server. As the central node of a network, it provides wireless access services. Other wireless devices are allowed to access the node. All wireless signal data of the devices accessing the node must pass through it to be exchanged and accessed with each other. With this mode, quick pairing of the anti-backflow control device with other communication and interaction devices is achieved.
[0027] Figure 5 FIG. 1 is a schematic diagram showing a connection structure of an example of a device for controlling inverter output power according to an embodiment of the utility model. Figure 5 As shown, the complete technology applied to the photovoltaic energy storage scenario of this application, the device for controlling the output power of the inverter includes: the communication interaction module 110 of the anti-backflow control device part, the micro control unit 120, the power metering module 130, the AC / DC converter 140, and the photovoltaic panel 200 of the photovoltaic energy storage part, the inverter communication interaction module 210, wherein the inverter communication interaction module 210 can be a NEP inverter with a WIFI module. In addition, for the specific details of the device for controlling the output power of the inverter, please refer to the above combined Figure 1-4 The relevant description in will not be repeated here.
[0028] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, 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 modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.
[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.
Claims
1. A backflow prevention control device, characterized in that: The anti-backflow control device comprises: The communication interaction module comprises at least one communication interaction device, which is connected to the micro control unit and is used to receive information data sent from other communication interaction devices paired with the communication interaction device in real time, and send the information data to the micro control unit; A microcontrol unit, the microcontrol unit is connected to the communication interaction module and the electric energy metering module, and is used to receive the information data transmitted by the communication interaction device in real time, and perform backflow prevention processing on the circuit according to the information data; Electric energy metering module, used for real-time metering of circuit information after anti-backflow treatment; An AC / DC converter is connected to the communication interaction module, the micro control unit, and the electric energy metering module, and is used to supply power to the communication interaction module, the micro control unit, and the electric energy metering module.
2. The backflow prevention control device according to claim 1, characterized in that: When the other communication interaction device paired with the communication interaction device is an inverter device with a communication interaction device, the backflow prevention control device includes: The communication interaction module includes at least one communication interaction device, which is used to receive circuit information sent from the inverter device paired with the communication interaction device in real time, and send the circuit information to the micro control unit, wherein the circuit information includes: voltage, current, temperature, and circuit status; A micro control unit, configured to receive the circuit information transmitted by the communication interaction device in real time, and perform anti-backflow monitoring processing on the circuit based on the circuit information; The electric energy metering module is used to measure the voltage, current, temperature and circuit status of the circuit in real time.
3. The backflow prevention control device according to claim 1, characterized in that: When the other communication interaction device paired with the communication interaction device is a control device with a communication interaction device, the anti-backflow control device includes: A communication interaction module, comprising at least one communication interaction device, configured to receive in real time a circuit output power control instruction sent from the control device paired with the communication interaction device, and send the circuit output power control instruction to a micro control unit; A micro control unit, used for receiving in real time the circuit output power control instruction transmitted by the communication interaction device, and adjusting the output power of the circuit based on the circuit output power control instruction; The electric energy metering module is used to measure the output power after circuit adjustment in real time.
4. The backflow prevention control device according to claim 1, characterized in that: The communication interaction equipment includes: WIFI and Bluetooth.
5. The backflow prevention control device according to claim 1, characterized in that: The anti-backflow control device comprises: a signal light for displaying different colors during the anti-backflow process.
6. The backflow prevention control device according to claim 1, characterized in that: The anti-backflow control device includes: a button for switching the anti-backflow working mode, wherein the anti-backflow working mode includes: STA mode and AP mode.
7. A device for controlling inverter output power, characterized in that: The device comprises: A photovoltaic panel, the photovoltaic panel is connected to an inverter with a communication interaction module, and is used to convert sunlight into direct current, and input the direct current into the inverter with the communication interaction module; An inverter with a communication interaction module is connected to the communication interaction module of the anti-backflow control device, and is used to convert the direct current into alternating current to power the circuit, and send circuit information in the circuit to the communication interaction module of the anti-backflow control device; The communication interaction module of the anti-backflow control device comprises at least one communication interaction device, which is used to receive in real time the circuit information sent from the inverter with the communication interaction module paired with the communication interaction device, and send the circuit information to the micro control unit of the anti-backflow control device; A microcontrol unit of the anti-backflow control device, configured to receive in real time the circuit information transmitted by the communication interaction device of the anti-backflow control device, and perform anti-backflow monitoring processing on the circuit based on the circuit information; The electric energy metering module of the anti-backflow control device is used to measure the voltage, current, temperature and circuit status of the circuit in real time; The AC / DC converter of the anti-backflow control device is connected to the communication interaction module, the micro control unit and the electric energy metering module, and is used to supply power to the communication interaction module, the micro control unit and the electric energy metering module.