Solar photovoltaic air conditioner and system thereof

Abstract

The utility model discloses a solar photovoltaic air conditioner and a system thereof, the solar photovoltaic air conditioner comprises an indoor unit and an outdoor unit, the indoor unit is provided with an indoor unit main control chip and an indoor unit null line and live line communication circuit, and the indoor unit null line and live line communication circuit is connected with the indoor unit main control chip; the outdoor unit is provided with an outdoor unit main control chip, an outdoor unit null line and live line communication circuit and an NB module circuit, the outdoor unit null line and live line communication circuit is connected with the indoor unit null line and live line communication circuit, and the outdoor unit main control chip is connected with the outdoor unit null line and live line communication circuit; the NB module circuit is connected with the outdoor unit main control chip and is in wireless communication with a cloud server. Compared with remote control over the solar photovoltaic air conditioner through WIFI, 4G and 5G networks, the scheme is achieved through the NB module circuit, the network coverage range is wider, the connection number is large, the standby time is long, power consumption is low, the system is more suitable for the solar photovoltaic air conditioner, adaptability is high, and cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to a solar photovoltaic air conditioning and a system thereof. Background Art

[0002] With the continuous upgrading and improvement of industrial technology, energy is becoming increasingly scarce. Traditional energy (such as coal, oil, petroleum gas and other mineral fossil fuels) not only causes extremely serious pollution to the environment, but also cannot be regenerated after exhaustion. Therefore, solar power generation is an effective measure to effectively solve environmental pollution and energy crisis. Photovoltaic air conditioners, which use solar energy as the main energy source, conform to the development trend of the home appliance market and have certain market prospects. At the same time, they save energy and reduce emissions, reduce the power loss in the process of converting AC to DC, and improve resource utilization.

[0003] Conventional air conditioners are usually controlled by remote controllers, which can only be controlled over short distances. Although existing smart air conditioners can communicate wirelessly with the user's handheld terminal through communication methods such as WIFI, 4G and 5G networks, allowing users to remotely control the air conditioner from a distance, using WIFI, 4G and 5G networks to achieve remote control of solar photovoltaic air conditioners is costly and power-intensive, and the existing remote control methods for smart air conditioners are not suitable for solar photovoltaic air conditioners. Utility Model Content

[0004] The embodiment of the utility model provides a solar photovoltaic air conditioner and a system thereof, aiming to solve the problems of high hardware cost and high power consumption required for realizing remote control of the existing solar photovoltaic air conditioner.

[0005] The utility model provides a solar photovoltaic air conditioner, comprising: an indoor unit and an outdoor unit.

[0006] The indoor unit is provided with an indoor unit main control chip and an indoor unit zero-live line communication circuit, wherein the indoor unit zero-live line communication circuit is connected to the indoor unit main control chip;

[0007] The external unit is provided with an external unit main control chip, an external unit zero-live communication circuit and a NB module circuit. The external unit zero-live communication circuit is connected to the internal unit zero-live communication circuit, the external unit main control chip is connected to the external unit zero-live communication circuit, and the NB module circuit is connected to the external unit main control chip and communicates wirelessly with the cloud server.

[0008] In the solar photovoltaic air conditioner provided by the utility model, the NB module circuit is also provided with a SIM card circuit, and the SIM card circuit is connected to the NB module circuit.

[0009] In the solar photovoltaic air conditioner provided by the utility model, the external unit is also provided with an external unit sensor circuit for collecting outdoor environmental parameters, and the external unit sensor circuit is connected to the NB module circuit and the external unit main control chip.

[0010] In the solar photovoltaic air conditioner provided by the utility model, the external unit is further provided with a bus communication circuit, and the bus communication circuit is connected to the main control chip of the external unit.

[0011] In the solar photovoltaic air conditioner provided by the utility model, the external unit is also provided with a compressor drive circuit, an electronic expansion valve drive circuit and a DC fan drive circuit, and the compressor drive circuit, the electronic expansion valve drive circuit and the DC fan drive circuit are all connected to the external unit main control chip.

[0012] In the solar photovoltaic air conditioner provided by the utility model, the indoor unit is further provided with a short-distance communication circuit, and the short-distance communication circuit is connected to the main control chip of the indoor unit.

[0013] In the solar photovoltaic air conditioner provided by the utility model, the short-distance communication circuit includes at least any one of an infrared communication circuit, a Bluetooth communication circuit, and a 2.4G communication circuit.

[0014] In the solar photovoltaic air conditioner provided by the utility model, the indoor unit is also provided with an indoor sensor circuit for collecting indoor environmental parameters, and the indoor sensor circuit is connected to the indoor main control chip; and / or, the indoor unit is also provided with a voice communication circuit, and the voice communication circuit is connected to the indoor main control chip.

[0015] In the solar photovoltaic air conditioner provided by the utility model, the indoor unit main control chip and the outdoor unit main control chip are both MCU chips.

[0016] The utility model also provides a solar photovoltaic air-conditioning system, comprising: a solar photovoltaic air-conditioning, wherein the solar photovoltaic air-conditioning is the above-mentioned solar photovoltaic air-conditioning, and the photovoltaic inverter supplies power to the solar photovoltaic air-conditioning.

[0017] The utility model provides a solar photovoltaic air conditioner and a system thereof. The solar photovoltaic air conditioner comprises an indoor unit and an outdoor unit. The indoor unit is provided with an indoor unit main control chip and an indoor unit zero-live line communication circuit. The outdoor unit is provided with an outdoor unit main control chip and an outdoor unit zero-live line communication circuit and an NB module circuit. The indoor unit zero-live line communication circuit and the outdoor unit zero-live line communication circuit are respectively connected to the indoor unit main control chip and the outdoor unit main control chip, and the indoor unit zero-live line communication circuit and the outdoor unit zero-live line communication circuit are connected. In this way, the indoor unit and the outdoor unit communicate through the indoor unit zero-live line communication circuit and the outdoor unit zero-live line communication circuit. The B module circuit is connected to the main control chip of the outdoor unit, and the NB module circuit is connected to the cloud server. Therefore, the data of the outdoor unit and the indoor unit can be uploaded to the cloud server through the NB module circuit, and the cloud server can send control instructions through the NB module circuit to control the operation of the outdoor unit and the indoor unit. Compared with the use of WIFI, 4G and 5G networks to achieve remote control of solar photovoltaic air conditioners, this solution uses NB module circuits to achieve it. The network coverage is wider, the number of connections is large, the standby time is long, the power consumption is low, it is more suitable for solar photovoltaic air conditioners, with strong adaptability and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments 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.

[0019] Figure 1 This is a schematic diagram of a solar photovoltaic air conditioner according to an embodiment of the utility model;

[0020] Figure 2 A schematic diagram of a solar photovoltaic air conditioning system according to an embodiment of the utility model;

[0021] Figure 3 This is a working logic diagram of the solar photovoltaic air conditioning system of the utility model embodiment;

[0022] Figure 4 This is a schematic diagram of the parameter collection and communication process of the solar photovoltaic air conditioner according to the embodiment of the utility model; Description of the drawings:

[0024] 100, external unit; 101, external unit main control chip; 102, external unit zero and live wire communication circuit; 103, NB module circuit; 104, SIM card circuit; 105, 485 communication circuit; 106, external ring temperature sensing circuit; 107, external tube temperature sensing circuit; 108, exhaust pipe temperature sensing circuit; 109, compressor drive circuit; 110, electronic expansion valve drive circuit; 111, DC fan drive circuit;

[0025] 200, indoor unit; 201, indoor unit main control chip; 202, indoor unit zero and live wire communication circuit; 203, infrared communication circuit; 204, Bluetooth communication circuit; 205, 2.4G communication circuit; 206, inner ring temperature sensing circuit; 207, voice communication circuit;

[0026] 300. Photovoltaic inverter;

[0027] 400, cloud server;

[0028] 500, controller;

[0029] 600. Remote control. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments 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.

[0031] The directional terms mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only for reference to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention. In addition, in the drawings, structures with similar or identical structures are represented by the same reference numerals.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] The embodiment of the utility model provides a solar photovoltaic air conditioner and a system thereof, which solves the problems of high hardware cost and high power consumption required for remote control of existing solar photovoltaic air conditioners. Wireless communication is achieved by connecting to a cloud server using an NB module circuit, which reduces the cost and power consumption.

[0034] The present invention solves the above-mentioned problems of high cost and high power consumption, and its technical solution is as follows:

[0035] The specific solution is that the indoor unit and the outdoor unit exchange information through the zero-live communication circuit, and the NB module circuit is set in the outdoor unit to access the cloud server. In this way, the data collected by the outdoor unit can be directly uploaded to the cloud server through the NB module circuit. The data collected by the indoor unit is first fed back to the outdoor unit through the zero-live communication circuit, and then uploaded to the cloud server by the outdoor unit through the NB module circuit. At the same time, the cloud server can also control the working state of the air conditioner by issuing control instructions through the NB module circuit, thereby realizing the remote control of the solar photovoltaic air conditioner. Therefore, the NB module circuit is used to replace the traditional WIFI, 4G and 5G networks to realize the remote control of the solar photovoltaic air conditioner. The NB module circuit has lower cost and lower power consumption.

[0036] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] Reference Figure 1-Figure 4 , Figure 1 A schematic diagram of a solar photovoltaic air conditioner provided in an embodiment of the utility model. The embodiment of the utility model provides a solar photovoltaic air conditioner, including: an indoor unit 200 and an outdoor unit 100. The indoor unit 200 is provided with an indoor unit main control chip 201 and an indoor unit zero-live communication circuit 202, and the indoor unit zero-live communication circuit 202 is connected to the indoor unit main control chip 201; the outdoor unit 100 is provided with an outdoor unit main control chip 101, an outdoor unit zero-live communication circuit 102 and a NB module circuit 103, the outdoor unit zero-live communication circuit 102 is connected to the indoor unit zero-live communication circuit 202, the outdoor unit main control chip 101 is connected to the outdoor unit zero-live communication circuit 102, and the NB module circuit 103 is connected to the outdoor unit main control chip 101 and wirelessly communicates with a cloud server 400.

[0038] Specifically, an external unit zero-live wire communication circuit 102 is set in the external unit 100, and an internal unit zero-live wire communication circuit 202 is set in the internal unit 200. The external unit main control chip 101 and the internal unit main control chip 201 are respectively connected to the external unit zero-live wire communication circuit 102 and the internal unit zero-live wire communication circuit 202, and the external unit zero-live wire communication circuit 102 is connected to the internal unit zero-live wire communication circuit 202. In this way, the external unit main control chip 101 and the internal unit main control chip 201 can communicate through the external unit zero-live wire communication circuit 102 and the internal unit zero-live wire communication circuit 202, and the internal unit 200 exchanges information with the external unit 100 through the zero-live wire communication circuit, wherein the external unit 100 is the host and the internal unit 200 is the slave. The external unit 100 is also provided with a NB module circuit 103 (Narrow Band Internet of Things, NB-IoT). The NB module circuit 103 is a module based on narrowband Internet of Things technology and cellular network communication, supporting cellular data connection of low-power devices in the wide area network. The NB module circuit 103 has the characteristics of wide coverage, multiple connections, fast speed, low cost, low power consumption, and excellent architecture. The NB module circuit 103 is connected to the external unit main control chip 101, and the NB module circuit 103 is connected to the cloud server 400. The NB module circuit 103 can communicate wirelessly with the cloud server 400. The data generated in the internal unit 200 and the external unit 100 can be uploaded to the cloud server 400 through the NB module circuit 103, wherein the data generated in the external unit 100 can be directly uploaded through the NB module circuit 103, and the data generated in the internal unit 200 is first fed back to the external unit 100 through the zero-live communication circuit, and then uploaded through the NB module circuit 103. Similarly, the cloud server 400 sends control instructions to the outdoor unit 100 through the NB module circuit 103 to control the action of the outdoor unit 100, and sends control instructions to the outdoor unit 100 through the NB module circuit 103, and the outdoor unit 100 sends them to the indoor unit 200 through the zero-live communication circuit to control the action of the indoor unit 200, thereby controlling the working state of the air conditioner and realizing remote control of the solar photovoltaic air conditioner.

[0039] Through this embodiment, compared with using WIFI, 4G and 5G networks to realize remote control of solar photovoltaic air conditioners, this solution uses NB module circuit 103 to achieve a wider network coverage, a large number of connections, a long standby time, low power consumption, more suitable for solar photovoltaic air conditioners, strong adaptability and low cost.

[0040] In one embodiment, the NB module circuit 103 is also provided with a SIM card circuit 104, and the SIM card circuit 104 is connected to the NB module circuit 103. Specifically, the SIM card circuit 104 (Subscriber Identity Module) provides Internet access and identity identification for the NB module circuit 103, so that the user can find the corresponding controlled air conditioner during remote control. The NB module circuit 103 of this embodiment uses BC28 as the main control chip, including reset, startup, voltage conversion, network display, SIM card and other circuits. The reset circuit is reset when the system is turned on to ensure the normal reception and reception of BC28. During the operation of the system, the network indicator light will flash frequently, indicating that the system is connected and data can be transmitted to the server. The SIM card is inserted into a traffic card to ensure data transmission.

[0041] In one embodiment, the external machine 100 is also provided with an external machine sensor circuit for collecting outdoor environmental parameters, and the external machine sensor circuit is connected to the NB module circuit 103 and the external machine main control chip 101. Specifically, the external machine sensor circuit of this embodiment includes: an external ring temperature sensing circuit 106, an external tube temperature sensing circuit 107, and an exhaust pipe temperature sensing circuit 108. Of course, it can be understood that the external machine sensor circuit can also include other types of sensor circuits, which are not limited here. Various environmental parameters are collected through the external ring temperature sensing circuit 106, the external tube temperature sensing package circuit, the exhaust pipe temperature sensing circuit 108, etc., and the cloud server 400 is connected through the NB module circuit 103, and various parameters are uploaded.

[0042] In one embodiment, the external unit 100 is also provided with a bus communication circuit, and the bus communication circuit is connected to the external unit main control chip 101. Specifically, the bus communication circuit can be a 485 communication circuit 105, or a CAN communication circuit, or other communication circuits, which are not limited here. This embodiment adopts the 485 communication circuit 105. The bus communication circuit is connected to the photovoltaic inverter 300, and the external unit 100 and the photovoltaic inverter 300 communicate through the bus communication circuit. On the one hand, when the photovoltaic inverter 300 is working, various parameters such as the output power of the photovoltaic power generation panel, the actual bus power input to the air conditioner, the grid output power, and the light intensity are collected and transmitted to the external unit 100 through the 485 communication circuit 105. On the other hand, the external unit 100 feeds back the working status of the air conditioner to the photovoltaic inverter 300 through the 485 communication circuit 105.

[0043] In this embodiment, the external unit 100 is further provided with a compressor drive circuit 109, an electronic expansion valve drive circuit 110 and a DC fan drive circuit 111, and the compressor drive circuit 109, the electronic expansion valve drive circuit 110 and the DC fan drive circuit 111 are all connected to the external unit main control chip 101. Specifically, the external unit main control chip 101 controls the working state of the load through the compressor drive circuit 109, the electronic expansion valve drive circuit 110 and the DC fan drive circuit 111, and feeds back the working state of the air conditioner to the photovoltaic inverter 300 through the 485 communication circuit 105.

[0044] In one embodiment, the indoor unit 200 is also provided with a short-distance communication circuit, and the short-distance communication circuit is connected to the indoor unit main control chip 201. Specifically, in addition to being able to achieve remote control through the NB module circuit 103, the solar photovoltaic air conditioner of this embodiment can achieve short-distance control by providing a short-distance communication circuit in the indoor unit 200. The user can send a control instruction to the short-distance communication circuit through the remote control 600 or the touch screen panel of the solar photovoltaic air conditioner, and the short-distance communication circuit transmits the control instruction to the indoor unit main control chip 201, thereby controlling the working state of the air conditioner. Through the wireless short-distance control method, customers can use the photovoltaic air conditioner more conveniently, and the air conditioner can also be controlled normally in the case of "offline". Using the touch screen panel of the solar photovoltaic air conditioner, the operating parameters inside the photovoltaic air conditioner can be monitored in the "offline" mode to achieve "offline mode" control. In this way, the solar photovoltaic air conditioner of this embodiment can remotely control and short-distance control the air conditioner through the NB module circuit 103 and the short-distance communication circuit respectively, realizing the "online mode" and "offline mode" of the air conditioner control. Among them, "online mode" refers to uploading data to the cloud server 400 through the NB module circuit 103, and performing corresponding actions according to the instructions issued by the cloud server 400; "offline mode" refers to regional control through wireless short-distance control methods such as 2.4G, Bluetooth or infrared.

[0045] In this embodiment, the short-distance communication circuit includes at least one of an infrared communication circuit 203, a Bluetooth communication circuit 204, and a 2.4G communication circuit 205. Of course, it is understandable that the short-distance communication circuit can also be of other types, and those skilled in the art can set it according to actual needs. In this embodiment, the "online mode" is to upload various parameters of the photovoltaic air conditioner (such as photovoltaic power generation, light intensity, temperature and humidity, etc.) to the cloud server 400 through the NB module circuit 103, so that the operator can remotely monitor the operating status of the photovoltaic air conditioner, which is convenient for remote problem finding and debugging. The "offline mode" is to use a variety of short-distance wireless control methods for regional control, such as Bluetooth connection, which can facilitate mobile phone app connection, such as infrared, 2.4G, etc., which can facilitate the remote control 600 and the central control board to control and receive communication signals. In the remote control 600, infrared, Bluetooth, 2.4G and other technologies are used to wirelessly remotely control the air conditioner.

[0046] In one embodiment, the indoor unit 200 is further provided with an indoor unit sensor circuit for collecting indoor environmental parameters, and the indoor unit sensor circuit is connected to the indoor unit main control chip 201. Specifically, the indoor unit sensor circuit can be an inner ring temperature sensing circuit 206, or other sensor circuits, which can be set by those skilled in the art according to actual needs. The indoor environmental temperature is collected through the inner ring temperature sensing circuit 206.

[0047] In one embodiment, the indoor unit 200 is further provided with a voice communication circuit 207, and the voice communication circuit 207 is connected to the indoor unit main control chip 201. Specifically, the voice broadcast function can be performed through the voice communication circuit 207, and the air conditioner can also be controlled by voice.

[0048] In one embodiment, the internal machine main control chip 201 and the external machine main control chip 101 are both MCU chips. Specifically, compared with the use of PLC chip control, although PLC has advantages such as stable operation and easy maintenance, compared with the MCU system, PLC has disadvantages such as high cost, slow operation speed, and many interface restrictions, which is not conducive to the expansion and development of subsequent functions.

[0049] Reference Figure 2 The embodiment of the utility model also provides a solar photovoltaic air-conditioning system, including: a solar photovoltaic air-conditioning and a photovoltaic inverter 300, wherein the solar photovoltaic air-conditioning is the solar photovoltaic air-conditioning of the above embodiment, and the photovoltaic inverter 300 supplies power to the solar photovoltaic air-conditioning.

[0050] Specifically, the solar photovoltaic air conditioning system includes a solar photovoltaic air conditioner (hereinafter referred to as an air conditioner), a photovoltaic inverter 300, and a controller 500. The photovoltaic inverter 300 is connected to the photovoltaic panel and the power grid. The photovoltaic panel converts solar energy into direct current power, which is transmitted to the photovoltaic inverter 300 after filtering by the storage capacitor and storing part of the energy, and then processed by the photovoltaic inverter 300 for grid connection. The controller 500 collects the power generation voltage and current parameters of the photovoltaic panel, and controls the switch states of the first switch and the second switch in the photovoltaic inverter 300 according to the output power of the photovoltaic cell and the operating power of the air conditioner, so that the solar photovoltaic air conditioning system switches to different working states, and reports the collected various parameters to the cloud server 400 through the NB module circuit 103. When the solar photovoltaic air conditioning system switches to the first working state, the photovoltaic panel supplies power to the air conditioner. At this time, the bus voltage of the solar photovoltaic air conditioning system is jointly affected by the output power of the photovoltaic panel and the operating power of the air conditioner. Therefore, the bus voltage is controlled according to the output power and the operating power, so that the bus voltage is high enough to ensure the normal operation of the air conditioner, and the output power of the photovoltaic cell is matched with the operating power of the air conditioner in real time, so as to ensure that the air conditioner can operate normally when the photovoltaic panel supplies power to the air conditioner. When the photovoltaic air conditioner switches to the second working state, the controller 500 detects whether the power corrector is enabled. When the power grid supplies power to the air conditioner, the air conditioner may enable the power corrector, correct the first voltage output by the power grid, and then input it into the air conditioner to drive the air conditioner. If the power corrector is not enabled, the bus voltage is controlled according to the first voltage output by the power grid, and the output power of the photovoltaic cell is adjusted until the bus voltage is less than or equal to the rated bus voltage. When the power factor corrector is enabled, the bus voltage is controlled according to the second voltage at the output end of the power factor corrector.

[0051] Reference Figure 2 and Figure 3 , when the air conditioner is in the operation stage, that is, the operating power of the air conditioner is not zero, it is divided into two situations: the output power of the photovoltaic panel is greater than the power of the air conditioner. This situation shows that the output power of the photovoltaic panel can reach the operating power of the air conditioner, and there is enough margin, and the photovoltaic panel alone is sufficient to ensure the normal operation of the air conditioner. Therefore, at this time, the photovoltaic air-conditioning system can be controlled to switch to the first working state, that is, only the photovoltaic panel is required to power the air conditioner. The output power of the photovoltaic panel is less than the power of the air conditioner. This situation shows that the output power of the photovoltaic panel is not enough to ensure the normal operation of the air conditioner, so the power grid is required to power the air conditioner to ensure that the air conditioner can operate normally. At this time, the controller 500 controls the photovoltaic air-conditioning system to switch to the second working state, that is, the photovoltaic panel and the power grid simultaneously supply power to the air conditioner.

[0052] When the operating power of the air conditioner is detected to be zero, it means that the air conditioner is in shutdown state. In order to avoid the output power of the photovoltaic panel being wasted, the output power of the photovoltaic panel can be connected to the grid, that is, the photovoltaic air conditioning system is controlled to switch to the third working state, and the output power of the photovoltaic panel is connected to the grid.

[0053] Reference Figure 4 When the photovoltaic inverter 300 is working, it needs to collect various parameters such as the output power of the photovoltaic panel, the actual bus power input to the air conditioner, the grid output power, and the light intensity, and transmit them to the outdoor unit 100 through the 485 communication circuit 105. In addition to receiving the signal from the remote control 600, the indoor unit 200 also needs to collect indoor environmental parameters such as the inner ring temperature in real time, and feed these parameters and the working mode of the indoor unit 200 back to the outdoor unit 100 through the zero-live communication circuit. While the outdoor unit 100 needs to receive various parameters from the photovoltaic inverter 300 and the indoor unit 200, it also needs to collect outdoor environmental parameters such as the exhaust pipe temperature, the outer pipe temperature, and the outer ring temperature, and summarize and calculate the above parameters, and upload them to the cloud server 400 together with the working mode of the outdoor unit 100 and the working mode of the indoor unit 200 through the NB module circuit 103. If the cloud server 400 issues an instruction to control the air conditioner, the outdoor unit 100 will perform corresponding actions according to the instruction.

[0054] Through the solar photovoltaic air conditioning system of this embodiment, two wireless control modes, "online mode" and "offline mode" are adopted; by using the NB module circuit 103, customers can understand the operation of the photovoltaic air conditioner in real time through the APP on the mobile terminal or through the cloud visualization interface on the PC terminal, adjust the working content of the air conditioner, and realize "online mode" control. Various parameters can be obtained without on-site disassembly testing, which is convenient for understanding the working condition of the air conditioner, and also allows the debugging personnel to know various parameters when the air conditioner is running, and find problems in time; compared with other online control modes, such as WIFI connection and 4G network, the NB module circuit 103 has a wider network coverage, a large number of connections, and a terminal module standby time of up to 10 years, with lower power consumption, which is more suitable for the development of photovoltaic projects, and the NB module circuit 103 does not require hardware upgrades, and is fully compatible with communication systems such as 4G networks, with stronger adaptability and lower cost.

[0055] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A solar photovoltaic air conditioner, characterized in that: include: The indoor unit is provided with an indoor unit main control chip and an indoor unit zero-live line communication circuit, wherein the indoor unit zero-live line communication circuit is connected to the indoor unit main control chip; The external unit is provided with an external unit main control chip, an external unit zero-live communication circuit and a NB module circuit. The external unit zero-live communication circuit is connected to the internal unit zero-live communication circuit, the external unit main control chip is connected to the external unit zero-live communication circuit, and the NB module circuit is connected to the external unit main control chip and communicates wirelessly with the cloud server.

2. The solar photovoltaic air conditioner according to claim 1, characterized in that: The NB module circuit is also provided with a SIM card circuit, and the SIM card circuit is connected to the NB module circuit.

3. The solar photovoltaic air conditioner according to claim 1, characterized in that: The external machine is also provided with an external machine sensor circuit for collecting outdoor environmental parameters, and the external machine sensor circuit is connected to the NB module circuit and the external machine main control chip.

4. The solar photovoltaic air conditioner according to claim 1, characterized in that: The external machine is also provided with a bus communication circuit, and the bus communication circuit is connected to the external machine main control chip.

5. The solar photovoltaic air conditioner according to claim 4, characterized in that: The external unit is also provided with a compressor drive circuit, an electronic expansion valve drive circuit and a DC fan drive circuit, and the compressor drive circuit, the electronic expansion valve drive circuit and the DC fan drive circuit are all connected to the external unit main control chip.

6. The solar photovoltaic air conditioner according to claim 1, characterized in that: The indoor unit is also provided with a short-distance communication circuit, and the short-distance communication circuit is connected to the indoor unit main control chip.

7. The solar photovoltaic air conditioner according to claim 6, characterized in that: The short-distance communication circuit includes at least any one of an infrared communication circuit, a Bluetooth communication circuit, and a 2.4G communication circuit.

8. The solar photovoltaic air conditioner according to claim 1, characterized in that: The indoor unit is also provided with an indoor unit sensor circuit for collecting indoor environmental parameters, and the indoor unit sensor circuit is connected to the indoor unit main control chip; and / or The indoor unit is also provided with a voice communication circuit, and the voice communication circuit is connected to the indoor unit main control chip.

9. The solar photovoltaic air conditioner according to claim 1, characterized in that: The internal machine main control chip and the external machine main control chip both adopt MCU chips.

10. A solar photovoltaic air conditioning system, characterized in that: include: A solar photovoltaic air conditioner and a photovoltaic inverter, wherein the solar photovoltaic air conditioner is the solar photovoltaic air conditioner as described in any one of claims 1 to 9, and the photovoltaic inverter supplies power to the solar photovoltaic air conditioner.

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