Photovoltaic driving based control device and method for a heat accumulator electric heater

Abstract

The application relates to the technical field of photovoltaic heating, in particular to a heat storage type electric heater control device and method based on photovoltaic driving, wherein the device comprises a DC / AC converter for keeping photovoltaic output at a maximum power point to supply power to the electric heater; a temperature control plug for taking power from a power grid when photovoltaic power does not meet preset requirements; a heating carbon fiber pipe for converting electric energy into heat energy to meet heating requirements; a heat storage device for meeting the heating requirements corresponding to the outlet air temperature of the electric heater and indoor temperature when photovoltaic power does not meet preset requirements; and a temperature control axial flow fan for adjusting the operating state of the fan according to the outlet air temperature, so that the outlet air temperature of the electric heater reaches preset stable conditions. The application can switch different power supply modes to supply power to the electric heater based on actual power supply conditions and temperature, so that stable constant-temperature photovoltaic heating is realized, the construction cost of photovoltaic heating is saved, the reliability of photovoltaic heating is improved, and the application is more practical.

Description

Technical Field

[0001] This application relates to the field of photovoltaic heating technology, and in particular to a control device and method for a photovoltaic-driven thermal storage electric heater. Background Technology

[0002] Building heating results in significant energy consumption and carbon dioxide emissions. Using photovoltaic power for building heating is an effective way to reduce building energy consumption and carbon emissions.

[0003] In related technologies, because photovoltaic power is volatile, it cannot be directly used to drive electric heating equipment. Therefore, photovoltaic panels can be used to generate electricity, which is then inverted to heat electric heaters. Excess electricity during the day is stored in batteries and can be used for time-sharing heating to reduce the large amount of energy consumption and carbon dioxide emissions caused by building heating.

[0004] However, in related technologies, the high cost of batteries increases the cost of photovoltaic heating, making the photovoltaic heating system less economical. Furthermore, the uncertainty of photovoltaic power generation has not been mitigated, making it difficult to guarantee stable voltage and power output. This makes it impossible to achieve reliable and practical constant-temperature photovoltaic heating, reducing the applicability and stability of photovoltaic heating in practical applications, which urgently needs to be addressed. Summary of the Invention

[0005] This application provides a control device and method for a photovoltaic-driven thermal storage electric heater to solve the problems in related technologies, such as the high cost of batteries leading to increased photovoltaic heating costs, resulting in insufficient economic efficiency of photovoltaic heating systems, failure to mitigate the uncertainties of photovoltaic power generation, difficulty in ensuring stable voltage and power output, inability to achieve reliable and practical constant-temperature photovoltaic heating, and reduced applicability and stability of photovoltaic heating in practical applications.

[0006] The first aspect of this application provides a photovoltaic-driven thermal storage electric heater control device, comprising: a DC / AC converter for maintaining photovoltaic power output at its maximum power point to supply power to the electric heater; a temperature-controlled plug connected to the power grid, which draws power from the power grid when the photovoltaic power does not meet preset requirements to ensure that the electric heater's power meets heating needs; a heating carbon fiber tube connected to both the DC / AC converter and the temperature-controlled plug to convert electrical energy into heat energy to meet heating needs; a thermal storage device for storing and releasing the heat energy, and meeting heating requirements corresponding to the outlet air temperature and indoor temperature of the electric heater when the photovoltaic power does not meet the preset requirements; and a temperature-controlled axial flow fan installed at the bottom of the electric heater, which adjusts its operating state according to the outlet air temperature to ensure that the outlet air temperature of the electric heater reaches a preset stable condition under fluctuating photovoltaic power.

[0007] Optionally, in one embodiment of this application, the temperature-controlled axial flow fan has a temperature probe to detect the outlet air temperature. When the power supply does not meet the preset requirements and the outlet air temperature is lower than the preset critical temperature of the temperature-controlled axial flow fan, the temperature-controlled axial flow fan operates, causing the electric heater to increase heat exchange through forced convection. When the power supply meets the preset requirements and the outlet air temperature is higher than the preset critical temperature, the temperature-controlled axial flow fan stops operating, causing the electric heater to use natural convection.

[0008] Optionally, in one embodiment of this application, the control temperatures of the thermostat are ordered as follows: the critical temperature of the thermostat plug < the comfortable temperature perceived by human convection < the critical temperature of the thermostat axial flow fan.

[0009] Optionally, in one embodiment of this application, the heat storage device is surrounded by the heating carbon fiber tube at the front and rear.

[0010] Optionally, in one embodiment of this application, the heat storage device is at least one heat storage brick.

[0011] Optionally, in one embodiment of this application, the preset requirement is that the power is lower than a preset power.

[0012] The second aspect of this application provides a photovoltaic-driven thermal storage electric heater control method, comprising the following steps: determining whether the photovoltaic power meets preset requirements; if the photovoltaic power does not meet the preset requirements, drawing power from the grid and using the thermal storage device to meet the heating requirements corresponding to the outlet air temperature and indoor temperature of the electric heater; adjusting the operating state of the temperature-controlled axial flow fan according to the outlet air temperature, so that the outlet air temperature of the electric heater reaches the preset stable condition under the drive of fluctuating photovoltaic power.

[0013] Optionally, in one embodiment of this application, adjusting the operating state of the temperature-controlled axial flow fan according to the outlet air temperature includes: when the power supply does not meet the preset requirements and the outlet air temperature is lower than the preset critical temperature of the temperature-controlled axial flow fan, the temperature-controlled axial flow fan operates, causing the electric heater to increase heat exchange through forced convection; when the power supply meets the preset requirements and the outlet air temperature is higher than the preset critical temperature, the temperature-controlled axial flow fan stops operating, causing the electric heater to use natural convection.

[0014] Optionally, in one embodiment of this application, the critical temperature of the temperature-controlled plug is less than the comfortable temperature perceived by human convection and less than the critical temperature of the temperature-controlled axial flow fan.

[0015] Optionally, in one embodiment of this application, the preset requirement is that the power is lower than a preset power.

[0016] A third aspect of this application provides an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the photovoltaic-driven thermal storage electric heater control method as described in the above embodiments.

[0017] A fourth aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described photovoltaic-driven thermal storage electric heater control method.

[0018] This application embodiment can achieve stable, constant-temperature photovoltaic heating by switching different power supply methods to power the electric heater based on actual power supply conditions and temperature. This saves on the construction cost of photovoltaic heating, improves its reliability, and makes it more practical. Therefore, it solves the problems in related technologies where the high cost of batteries increases the cost of photovoltaic heating, making the photovoltaic heating system less economical. Furthermore, it fails to mitigate the uncertainties of photovoltaic power generation, making it difficult to guarantee stable voltage and power output, thus failing to achieve reliable and practical constant-temperature photovoltaic heating, and reducing the applicability and stability of photovoltaic heating in practical applications.

[0019] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0021] Figure 1 This is a schematic diagram of the structure of a photovoltaic-driven thermal storage electric heater control device according to an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the operating structure of a photovoltaic-driven thermal storage electric heater control device according to an embodiment of this application;

[0023] Figure 3 This is a flowchart of a photovoltaic-driven thermal storage electric heater control method according to an embodiment of this application;

[0024] Figure 4 This is a schematic diagram of the structure of an electronic device according to an embodiment of this application. Detailed Implementation

[0025] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0026] The following description, with reference to the accompanying drawings, describes a photovoltaic-driven thermal storage electric heater control device and method according to embodiments of this application. In the related technologies mentioned in the background section, the high cost of batteries increases the cost of photovoltaic heating, making photovoltaic heating systems economically inefficient. Furthermore, the uncertainty of photovoltaic power generation remains unresolved, making it difficult to guarantee stable voltage and power output, thus hindering reliable and practical constant-temperature photovoltaic heating and reducing the applicability and stability of photovoltaic heating in practical applications. This application provides a photovoltaic-driven thermal storage electric heater control device that can switch between different power supply methods to supply power to the electric heater based on actual power supply conditions and temperature, thereby achieving stable constant-temperature photovoltaic heating. This saves on the construction cost of photovoltaic heating, improves its reliability, and makes it more practical. Therefore, this solves the problems in the related technologies where the high cost of batteries increases the cost of photovoltaic heating, leading to insufficient economic efficiency of photovoltaic heating systems, and the unresolved uncertainty of photovoltaic power generation makes it difficult to guarantee stable voltage and power output, hindering reliable and practical constant-temperature photovoltaic heating and reducing the applicability and stability of photovoltaic heating in practical applications.

[0027] Specifically, Figure 1 This is a schematic diagram of a photovoltaic-driven thermal storage electric heater control device provided in an embodiment of this application.

[0028] like Figure 1 As shown, the control device 10 of the photovoltaic-driven thermal storage electric heater 130 includes: a DC / AC converter 110, a temperature control plug 120, a heating carbon fiber tube 131, a thermal storage device 132, and a temperature control axial flow fan 133.

[0029] DC / AC converter 110 is used to maintain the photovoltaic output at the maximum power point to power the electric heater 130.

[0030] It is understood that in this embodiment of the application, the DC / AC converter 110 is used to provide photovoltaic power to the electric heater 130. The DC / AC converter 110 maintains maximum power point operation to ensure that the electric heater 130 preferentially uses photovoltaic power, and the capacity of the DC / AC converter 110 is determined by the photovoltaic installed capacity, while ensuring that the capacity of the DC / AC converter 110 is greater than the rated power of the electric heating equipment.

[0031] For example, an input path can be set up to connect to the photovoltaic panel 20, including a DC / AC converter 110 with an MPPT (Maximum Power Point Tracking) algorithm, and keep the photovoltaic panel operating at its maximum output power point.

[0032] Specifically, it can accept either AC or DC power. When DC power is required, the DC / AC converter 110 can be replaced with a DC / DC converter without changing the operation process.

[0033] The DC / AC converter 110 in this embodiment is used to keep the photovoltaic output at the maximum power point, thereby supplying power to the electric heater 130, so as to effectively improve the energy conversion efficiency of the photovoltaic-driven thermal storage electric heater 130 and maximize the utilization of photovoltaic power.

[0034] Temperature control plug 120 is connected to grid 30. When the photovoltaic power does not meet the preset requirements, it draws power from grid 30 to ensure that the electric power of electric heater 130 meets the heating demand.

[0035] In actual operation, the temperature control plug 120 can be connected to the power grid 30. When it is detected that the outlet air temperature of the electric heater 130 cannot meet the heating requirements, it is considered that the photovoltaic power does not meet the preset requirements, and the temperature control plug 120 closes to ensure that the electric heater 130 can continuously provide heating based on the power from the power grid 30. Specifically, the heating requirement of the temperature control plug 120 is that the outlet air temperature of the electric heater 130 is lower than the critical temperature of the temperature control plug 120.

[0036] For example Figure 2 As shown, different power supply modes can be switched through the temperature control plug 120. When the temperature probe 135 connected to the temperature control plug 120 detects that the air outlet temperature of the electric heater 130 is lower than the critical temperature of the temperature control plug 120, it is considered that the photovoltaic power does not meet the preset requirements and automatically draws power from the grid 30 to ensure that the electric heater 130 provides normal heating.

[0037] Optionally, in one embodiment of this application, the preset requirement is that the power is lower than a preset power.

[0038] It is understood that in this embodiment of the application, when the photovoltaic power supply is insufficient due to insufficient light source and the photovoltaic power is lower than the preset power intensity, it is considered that the power does not meet the preset requirements.

[0039] It should be noted that the preset requirements and preset power can be set by those skilled in the art according to the actual situation, and no specific limitations are made here.

[0040] Heating carbon fiber tube 131 is connected to DC / AC converter 110 and temperature control plug 120 respectively to convert electrical energy into heat energy to meet heating demand.

[0041] Specifically, the heating carbon fiber tube 131 can be connected to the DC / AC converter 110 and the temperature control plug 120 through two power supply ports respectively, so as to realize photovoltaic power supply and grid power supply 30 respectively, thereby converting electrical energy into heat energy and performing the heating function.

[0042] The heating carbon fiber tube 131 is connected to the DC / AC converter 110 via a port that continuously absorbs photovoltaic power for heating. The connection between the heating carbon fiber tube 131 and the temperature control plug 120 is disconnected by default. When the temperature control probe detects that the temperature at the air outlet 134 of the heater 130 is lower than the critical temperature of the temperature control plug 120, the photovoltaic power supply to the heater 130 is insufficient, requiring additional electrical energy. The temperature control plug 120 then draws power from the grid 30 to supply power to the heating carbon fiber tube 131.

[0043] The thermal storage device 132 is used to store and release thermal energy, and when the photovoltaic power does not meet the preset requirements, it meets the heating requirements corresponding to the air outlet temperature and indoor temperature of the electric heater 130.

[0044] It should be noted that the preset requirements can be set by those skilled in the art according to the actual situation, and no specific limitations are made here.

[0045] In some embodiments, the heat storage device 132 can maintain its own temperature rising continuously under the heating of the heating carbon fiber tube 131 in order to achieve heat storage. When the photovoltaic power does not meet the preset requirements, the heating carbon fiber tube 131 stops heating due to insufficient power, and the heat storage device 132 can release heat to maintain the outlet air temperature.

[0046] Optionally, in one embodiment of this application, the heat storage device 132 is surrounded by heating carbon fiber tubes 131 at the front and rear.

[0047] It is understood that in this embodiment of the application, the heat storage device 132 surrounds the heating carbon fiber tube 131 from the front and back to ensure that the heat of the heating carbon fiber tube 131 is fully absorbed, thereby realizing the storage of excess heat and releasing heat to ensure heating requirements. For example, heat can be released at night or during periods of insufficient sunlight, such as rainy days.

[0048] Optionally, in one embodiment of this application, the heat storage device 132 is at least one heat storage brick.

[0049] It is understood that, in the embodiments of this application, the heat storage device 132 includes, but is not limited to, at least one heat storage brick. The surface of the heat storage brick may be provided with stripes perpendicular to the ground to ensure smooth gas flow inside the electric heater 130. Insulation cotton may be wrapped around the outside of the heat storage brick to reduce heat loss from the heat storage brick.

[0050] Temperature-controlled axial flow fan 133 is installed at the bottom of electric heater 130. Temperature-controlled axial flow fan 133 adjusts the operation of the fan according to the outlet air temperature so that the outlet air temperature of electric heater 130 reaches the preset stable condition under the drive of fluctuating photovoltaic power.

[0051] It is understood that in this embodiment of the application, the temperature-controlled axial flow fan 133 can be installed at the bottom of the electric heater 130, and the operating state of the temperature-controlled axial flow fan 133 can be adjusted according to the outlet air temperature, so that the outlet air temperature of the electric heater 130 remains relatively stable and constant temperature heating is guaranteed.

[0052] It should be noted that the preset stability conditions can be set by those skilled in the art according to the actual situation, and no specific limitations are made here.

[0053] For example, under heating conditions, the temperature-controlled axial flow fan 133 can drive airflow through the heating carbon fiber tube 131, and increase the heat exchange by forced convection, thereby increasing the outlet air temperature of the electric heater 130.

[0054] Optionally, in one embodiment of this application, the temperature-controlled axial flow fan 133 has a temperature probe 135 to detect the outlet air temperature. When the power supply does not meet the preset requirements and the outlet air temperature is lower than the preset critical temperature of the temperature-controlled axial flow fan 133, the temperature-controlled axial flow fan 133 operates, causing the electric heater 130 to increase heat exchange through forced convection. When the power supply meets the preset requirements and the outlet air temperature is higher than the preset critical temperature, the temperature-controlled axial flow fan 133 stops operating, causing the electric heater 130 to use natural convection.

[0055] It should be noted that the preset requirements and preset critical temperatures can be set by those skilled in the art according to the actual situation, and no specific limitations are made here.

[0056] In actual operation, the opening and closing of the temperature-controlled axial flow fan 133 is determined by the outlet air temperature, which is detected by the temperature probe 135 at the outlet 134. When the power is insufficient, causing the outlet air temperature to fall below the critical temperature of the temperature-controlled axial flow fan 133, the temperature-controlled axial flow fan 133 operates, and the electric heater 130 uses forced convection to increase heat exchange and raise the outlet air temperature. When the power is sufficient, causing the outlet air temperature to exceed the critical temperature of the temperature-controlled axial flow fan 133, the temperature-controlled axial flow fan 133 stops operating, and the electric heater 130 uses natural convection to prevent the outlet air temperature from becoming too high.

[0057] Optionally, in one embodiment of this application, the control temperatures of the thermostat are ordered as follows: critical temperature of thermostat plug 120 < comfortable temperature perceived by human body convection < critical temperature of thermostat axial flow fan 133.

[0058] It is understood that in this embodiment, the thermostat can be controlled by temperature. The thermostat of the heater includes a thermostat plug 120 and a thermostat axial flow fan 133. The comfortable temperature for human convection perception can be set to 25°C. For example, in a nighttime scenario, insufficient sunlight at the photovoltaic panel 20 leads to a decrease in photovoltaic power supply, and the heating carbon fiber tube 131 stops heating. At this time, the temperature probe 135 detects that the outlet air temperature is lower than the critical temperature of the thermostat axial flow fan 133, so the thermostat axial flow fan 133 turns on, using forced convection to increase heat exchange. At the same time, the heat storage device 132 releases heat to maintain the outlet air temperature. When all the heat from the heat storage brick is released, the photovoltaic power is still insufficient. The temperature probe senses that the outlet air temperature at the outlet 134 has dropped below the critical temperature of the thermostat plug 120, so the thermostat plug 120 closes and begins to draw power from the grid 30 to drive the heating carbon fiber tube 131. At the same time, the thermostat axial flow fan 133 continues to turn on, continuously ensuring forced convection so that the outlet air temperature meets the heating requirements.

[0059] The working principle of the embodiments of this application will be described in detail below with some specific examples.

[0060] For example, on a sunny day with ample sunlight, the photovoltaic power generation is relatively high. The DC / AC converter 110 keeps the photovoltaic output at its maximum power point, and the carbon fiber tube generates heat under the action of photovoltaic power to provide indoor heating. Meanwhile, the probe of the temperature-controlled axial flow fan 133 monitors the outlet air temperature of the electric heater 130. When the outlet air temperature is lower than the set temperature of the thermostat, the axial flow fan is driven to turn on, and the outlet air temperature is increased by forced convection. When the outlet air temperature is higher than the set temperature of the thermostat, the axial flow fan is stopped, and natural convection is used to reduce heat exchange and prevent the outlet air temperature from being too high. At the same time, the temperature of the heat storage brick continuously rises under the heating of the heating carbon fiber tube 131, storing heat. At night or on rainy days, due to the lack of photovoltaic power, the heating carbon fiber tube 131 stops heating, and the heat storage brick releases heat to maintain the outlet air temperature. When all the heat of the heat storage brick has been released, and the photovoltaic power is insufficient, the temperature control plug 120 senses that the outlet air temperature has dropped below the critical temperature and starts to draw power from the grid 30 to drive the heating carbon fiber tube 131. At the same time, the axial flow fan turns on, so that the outlet air temperature meets the heating requirements.

[0061] For example, on cloudy or rainy days or at night, when there is no photovoltaic power, the thermostat plug 120 senses that the outlet air temperature has dropped below the critical temperature and draws power from the grid 30 to drive the heating carbon fiber tube 131. At the same time, the axial flow fan turns on, ensuring that the outlet air temperature meets the heating requirements. When the outlet air temperature of the electric heater 130 is higher than the set temperature of the thermostat axial flow fan 133, the fan turns off. When the outlet air temperature of the electric heater 130 further rises until it exceeds the critical temperature of the thermostat plug 120, the thermostat plug 120 disconnects from the grid 30. At this time, the electric heater 130 uses the heat stored in the heat storage brick to heat the room.

[0062] The photovoltaic-driven thermal storage electric heater control device proposed in this application can switch between different power supply methods to supply power to the electric heater based on actual power supply conditions and temperature, thereby achieving stable constant-temperature photovoltaic heating. This saves on the construction cost of photovoltaic heating, improves its reliability, and makes it more practical. Therefore, it solves the problems in related technologies where the high cost of batteries increases the cost of photovoltaic heating, making the photovoltaic heating system less economical. Furthermore, it fails to mitigate the uncertainties of photovoltaic power generation, making it difficult to guarantee stable voltage and power output, thus hindering reliable and practical constant-temperature photovoltaic heating and reducing the applicability and stability of photovoltaic heating in practical applications.

[0063] Next, referring to the accompanying drawings, a photovoltaic-driven thermal storage electric heater control method based on an embodiment of this application is described.

[0064] Figure 3 This is a flowchart of a photovoltaic-driven thermal storage electric heater control method according to an embodiment of this application, including the following steps:

[0065] In step S301, it is determined whether the photovoltaic power meets the preset requirements.

[0066] In step S302, if the photovoltaic power does not meet the preset requirements, power is drawn from the grid, and the heating requirements corresponding to the air outlet temperature and indoor temperature of the electric heater are met based on the thermal storage device.

[0067] In step S303, the operating state of the temperature-controlled axial flow fan is adjusted according to the outlet air temperature so that the outlet air temperature of the electric heater reaches the preset stable condition under the drive of fluctuating photovoltaic power.

[0068] Optionally, in one embodiment of this application, adjusting the operating state of the temperature-controlled axial flow fan according to the outlet air temperature includes: when the power supply does not meet the preset requirements and the outlet air temperature is lower than the preset critical temperature of the temperature-controlled axial flow fan, the temperature-controlled axial flow fan operates, causing the electric heater to increase heat exchange through forced convection; when the power supply meets the preset requirements and the outlet air temperature is higher than the preset critical temperature, the temperature-controlled axial flow fan stops operating, causing the electric heater to use natural convection.

[0069] Optionally, in one embodiment of this application, the critical temperature of the temperature-controlled plug is less than the comfortable temperature perceived by human convection and less than the critical temperature of the temperature-controlled axial flow fan.

[0070] Optionally, in one embodiment of this application, the preset requirement is that the power is lower than a preset power.

[0071] It should be noted that the foregoing explanation of the photovoltaic-driven thermal storage electric heater control device embodiment also applies to the photovoltaic-driven thermal storage electric heater control method of this embodiment, and will not be repeated here.

[0072] The photovoltaic-driven thermal storage electric heater control method proposed in this application can achieve stable constant-temperature photovoltaic heating by switching different power supply methods to power the electric heater based on actual power supply conditions and temperature. This saves on the construction cost of photovoltaic heating, improves its reliability, and makes it more practical. Therefore, it solves the problems in related technologies where the high cost of batteries increases the cost of photovoltaic heating, making the photovoltaic heating system less economical. Furthermore, it fails to mitigate the uncertainty of photovoltaic power generation, making it difficult to guarantee stable voltage and power output, thus failing to achieve reliable and practical constant-temperature photovoltaic heating, and reducing the applicability and stability of photovoltaic heating in practical applications.

[0073] Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of this application. The electronic device may include:

[0074] The memory 401, the processor 402, and the computer program stored on the memory 401 and capable of running on the processor 402.

[0075] When the processor 402 executes the program, it implements the photovoltaic-driven thermal storage electric heater control method provided in the above embodiments.

[0076] Furthermore, electronic devices also include:

[0077] Communication interface 403 is used for communication between memory 401 and processor 402.

[0078] The memory 401 is used to store computer programs that can run on the processor 402.

[0079] Memory 401 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.

[0080] If the memory 401, processor 402, and communication interface 403 are implemented independently, then the communication interface 403, memory 401, and processor 402 can be interconnected via a bus to complete communication between them. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of representation, Figure 4 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0081] Optionally, in a specific implementation, if the memory 401, processor 402, and communication interface 403 are integrated on a single chip, then the memory 401, processor 402, and communication interface 403 can communicate with each other through an internal interface.

[0082] Processor 402 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application.

[0083] This embodiment also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the above-described photovoltaic-driven thermal storage electric heater control method.

[0084] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0085] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0086] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or N executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0087] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution means, apparatus, or device (such as a computer-based device, a processor-included device, or other means that can fetch and execute instructions from, or in conjunction with, an instruction execution means, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution means, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0088] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution device. For example, if implemented in hardware as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0089] Those skilled in the art will understand that all or part of the steps of the methods described in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it includes one or a combination of the steps of the method embodiments.

[0090] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0091] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A control device for a heat accumulator electric heater based on photovoltaic drive, characterized in that, The application comprises: a DC / AC converter for keeping photovoltaic at maximum power point output to power the electric heater; a temperature control plug connected to the power grid to take power from the power grid when the photovoltaic power fails to meet the preset requirement to ensure that the electric power of the electric heater meets the heating demand; a heating carbon fiber tube connected to the DC / AC converter and the temperature control plug to convert electric energy into heat energy to meet the heating demand; a heat storage device for storing and releasing the heat energy to meet the heating requirement corresponding to the outlet temperature of the electric heater and the indoor temperature when the photovoltaic power fails to meet the preset requirement; and a temperature control axial flow fan installed at the bottom of the electric heater, which adjusts the operating state of the fan according to the outlet temperature to make the outlet temperature of the electric heater reach the preset stable condition under the driving of fluctuating photovoltaic power. The temperature control axial flow fan has a temperature probe to detect the outlet temperature, and when the photovoltaic power fails to meet the preset requirement and the outlet temperature is lower than the preset critical temperature of the temperature control axial flow fan, the temperature control axial flow fan operates to make the electric heater increase the heat exchange amount in a forced convection manner, and when the photovoltaic power meets the preset requirement and the outlet temperature is higher than the preset critical temperature, the temperature control axial flow fan stops operating to make the electric heater adopt a natural convection manner. The control temperature sequence of the temperature controller is: the critical temperature of the temperature control plug < the comfortable temperature perceived by the human body in convection < the critical temperature of the temperature control axial flow fan.

2. The control device for a photovoltaic driving-based heat storage electric heater according to claim 1, wherein The front and back of the heat storage device are surrounded by the heating carbon fiber tube.

3. The control device for a photovoltaic driving-based heat storage type electric heater according to claim 1, wherein The heat storage device is at least one heat storage brick.

4. The control device for a photovoltaic driving-based heat storage electric heater according to claim 1 or 3, wherein The preset requirement is that the photovoltaic power is lower than the preset power.

5. The control device for a photovoltaic driving-based heat storage type electric heater according to claim 1, wherein The application comprises:

6. A control method of a photovoltaic driving-based heat accumulating electric heater, adapted to be applied to the photovoltaic driving-based heat accumulating electric heater control device according to any one of claims 1 to 5, characterized by, judging whether the photovoltaic power meets the preset requirement; if the photovoltaic power fails to meet the preset requirement, taking power from the power grid and meeting the heating requirement corresponding to the outlet temperature of the electric heater and the indoor temperature based on the heat storage device; and adjusting the operating state of the temperature control axial flow fan according to the outlet temperature to make the outlet temperature of the electric heater reach the preset stable condition under the driving of fluctuating photovoltaic power. The adjusting of the operating state of the temperature control axial flow fan according to the outlet temperature comprises: when the photovoltaic power fails to meet the preset requirement and the outlet temperature is lower than the preset critical temperature of the temperature control axial flow fan, the temperature control axial flow fan operates to make the electric heater increase the heat exchange amount in a forced convection manner; when the photovoltaic power meets the preset requirement and the outlet temperature is higher than the preset critical temperature, the temperature control axial flow fan stops operating to make the electric heater adopt a natural convection manner. The application comprises:

7. An electronic device, comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor executes the program to implement the photovoltaic driving-based heat storage electric heater control method of claim 6. The program is executed by the processor to implement the photovoltaic driving-based heat storage electric heater control method of claim 6.

8. A computer-readable storage medium having stored thereon a computer program, characterized in that, ​

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