Photovoltaic heat source comprehensive control system and control method

Abstract

The present application provides a photovoltaic heat source comprehensive control system and control method, which relates to the field of new energy utilization; the system includes a photovoltaic building, a photovoltaic panel assembly, a confluence building and an air source heat pump group; a number of photovoltaic panel assemblies are laid on the top light-facing side of the photovoltaic building for power generation applications; the air source heat pump group is arranged in the confluence channel; the first door body assembly is used to open or close the upstream air inlet of the photovoltaic channel, and the second door body assembly is used to open or close the downstream air outlet of the photovoltaic channel; at least one side of the confluence building is provided with a third door body assembly, and the third door body assembly is used to open or close the exchange function between the confluence channel and the external environment air. This solution can realize the flexible adjustment of the first door body assembly, the second door body assembly and the third door body assembly according to the external environment temperature and the indoor temperature, so as to ensure that the optimal air supply environment is provided for the air source heat pump group, so as to optimize the heating efficiency of the air source heat pump group.

Description

Technical Field

[0001] The present invention relates to the field of new energy utilization, and in particular to a photovoltaic heat source comprehensive control system and control method. Background Art

[0002] At present, the technology of using renewable clean energy to generate electricity has become mature. The device that uses solar photovoltaic power generation system for power generation has the characteristics of small investment and short construction period, and is gradually being promoted in an all-round way.

[0003] However, during the operation of the photovoltaic power generation system, the heat around the photovoltaic panels increases due to the heat generation performance of the solar photovoltaic panels, causing the power generation efficiency of the photovoltaic power generation system to decrease as the operating temperature of the solar photovoltaic panels increases.

[0004] For example, the Chinese invention patent with the authorization announcement number CN206683031U provides a solar photovoltaic and thermal airflow integrated power generation and heating device. In this solution, an air source heat pump is installed in the power generation greenhouse. The air source heat pump absorbs the heat in the power generation greenhouse, which can effectively reduce the temperature of the solar photovoltaic panel and keep its ambient temperature at the optimal working temperature. At the same time, low-quality thermal energy can also be recycled throughout the year.

[0005] However, after long-term practice, the applicant found that the device had the following problems when used:

[0006] Through actual operation tests, it was found that when used in cold winter nights in the north, when the temperature at night is between 0℃ and -20℃, the temperature of the photovoltaic panels is much lower than the external ambient temperature, resulting in the airflow temperature formed after the outdoor natural air passes through the photovoltaic channel being lower than the external ambient temperature, causing the air source heat pump to have a lower heating efficiency in the low temperature environment at night than in the natural air environment. Therefore, how to effectively solve the problem of the low temperature cold current formed in the photovoltaic channel during cold winter nights in the north reducing the heating efficiency of the air source heat pump is an urgent problem that needs to be solved. Summary of the invention

[0007] The purpose of the present invention is to provide a photovoltaic heat source comprehensive control system and control method to solve the technical problem existing in the prior art that the low-temperature cold current formed in the photovoltaic channel reduces the heating efficiency of the air source heat pump.

[0008] Based on the above objectives, in the first aspect, the present application provides a photovoltaic heat source comprehensive control system,

[0009] Including photovoltaic buildings, photovoltaic panel assemblies, confluence buildings and air source heat pump units;

[0010] A plurality of photovoltaic panel assemblies are laid on the top sun-facing side of the photovoltaic building for power generation;

[0011] The interior of the photovoltaic building forms a photovoltaic channel along its length direction;

[0012] The confluence building is located on one side of the photovoltaic building, and the interior of the confluence building forms a confluence channel, and the confluence channel is interconnected with the downstream air outlet of the photovoltaic channel;

[0013] The air source heat pump group is arranged in the confluence channel;

[0014] The two ends of the photovoltaic building in the length direction are respectively provided with a first door assembly and a second door assembly, wherein the first door assembly is used to open or close the upstream air inlet of the photovoltaic channel, and the second door assembly is used to open or close the downstream air outlet of the photovoltaic channel;

[0015] A third door assembly is disposed on at least one side of the converging building, and the third door assembly is used to open or close the exchange function between the converging channel and the external ambient air.

[0016] Further, it also includes a first temperature detector, a second temperature detector and a third temperature detector;

[0017] Wherein, the first temperature detector is arranged outside the photovoltaic building and is used to detect the external environment temperature;

[0018] The second temperature detector is arranged in the photovoltaic channel and is used to detect the indoor temperature in the photovoltaic channel;

[0019] The third temperature detector is disposed in the confluence channel and is used to detect the indoor temperature in the confluence channel.

[0020] Furthermore, it also includes a wind speed and direction detector, which is arranged outside the photovoltaic building and is used to detect outdoor wind speed and wind direction data.

[0021] Furthermore, at least one exhaust fan is provided on the wall on the backlight side of the photovoltaic channel to draw external ambient air into the photovoltaic channel;

[0022] At least one heat pump exhaust port is arranged on the backlight side wall in the converging channel, and is used for exhausting air from the air source heat pump group to the external environment.

[0023] Furthermore, at least one exhaust fan is arranged in the converging channel to draw external ambient air into the converging channel.

[0024] Furthermore, the door frames at the two ends in the length direction of the photovoltaic building are triangular;

[0025] The first door body assembly includes a first triangular door panel, a first door shaft and a first driving assembly, wherein the two side edges of the first triangular door panel are respectively connected to the midpoints of the backlight side and the bottom side of the door frame through the first door shaft, and the first driving assembly is connected to the first door shaft to drive the first door shaft to drive the first triangular door panel to open or close the upstream air inlet of the photovoltaic channel.

[0026] Furthermore, the second door body assembly includes a second triangular door panel, a second door shaft and a second driving assembly, wherein the two side edges of the second triangular door panel are respectively connected to the midpoints of the backlight side and the bottom side of the door frame through the second door shaft, and the second driving assembly is connected to the second door shaft to drive the second triangular door panel to open or close the downstream air outlet of the photovoltaic channel.

[0027] Furthermore, a plurality of guide plates are disposed on one side of the first triangular door panel and the second triangular door panel, and the plurality of guide plates are arranged at intervals according to a preset spacing.

[0028] In a second aspect, the present application provides a photovoltaic heat source comprehensive control method, which is applied to the above-mentioned photovoltaic heat source comprehensive control system; the method comprises:

[0029] In winter, the air source heat pump unit is in heating condition:

[0030] When the temperature in the photovoltaic channel is lower than the external environment temperature, the first door assembly and the second door assembly close the photovoltaic channel, and the third door assembly opens the confluence channel, so that the external environment air directly enters the confluence channel to supply air to the air source heat pump group;

[0031] When the temperature inside the photovoltaic channel is higher than the external environment temperature, the first door assembly and the second door assembly open the photovoltaic channel, and the third door assembly closes the confluence channel, so that the external environment air directly passes through the photovoltaic channel to heat up and then supplies air to the air source heat pump group.

[0032] Furthermore, the method further comprises:

[0033] In summer, the air source heat pump unit is in cooling condition:

[0034] When the temperature inside the photovoltaic channel is lower than the external environment temperature, the first door assembly and the second door assembly open the photovoltaic channel, and the third door assembly closes the confluence channel, so that the external environment air passes through the photovoltaic channel to form a low-temperature cold air flow to supply air to the air source heat pump group.

[0035] By adopting the above technical solution, the photovoltaic heat source comprehensive control system and control method provided by this application have the following technical effects compared with the prior art:

[0036] A number of photovoltaic panel assemblies are laid on the top sun-facing side of the photovoltaic building for power generation; an air source heat pump group is arranged in a confluence channel; a first door assembly is used to open or close the upstream air inlet of the photovoltaic channel, and a second door assembly is used to open or close the downstream air outlet of the photovoltaic channel; a third door assembly is arranged on at least one side of the confluence building, and the third door assembly is used to open or close the exchange function between the confluence channel and the external ambient air.

[0037] In actual application, especially in winter when the air source heat pump unit is in heating condition:

[0038] When the temperature in the photovoltaic channel is lower than the external ambient temperature, the first door assembly and the second door assembly close the photovoltaic channel, and the third door assembly opens the confluence channel, so that the external ambient air directly enters the confluence channel to supply air to the air source heat pump group. This can greatly reduce the impact of the low-temperature air in the photovoltaic channel on the heating efficiency of the air source heat pump group, thereby improving the heating efficiency;

[0039] When the temperature inside the photovoltaic channel is higher than the external environment temperature, the first door assembly and the second door assembly open the photovoltaic channel, and the third door assembly closes the confluence channel, so that the external environment air can directly pass through the photovoltaic channel to heat up and then supply air to the air source heat pump group, thereby achieving the purpose of improving the heating efficiency of the air source heat pump group.

[0040] To sum up, the technical solution of the present application can realize flexible adjustment of the first door body assembly, the second door body assembly and the third door body assembly according to the external ambient temperature and the indoor temperature, thereby ensuring the provision of the optimal air supply environment for the air source heat pump group to optimize the heating efficiency of the air source heat pump group. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 It is a schematic diagram of the external structure of the photovoltaic heat source comprehensive control system provided in the embodiment of the present application;

[0043] Figure 2 It is an internal structure diagram of the photovoltaic heat source comprehensive control system provided in an embodiment of the present application (the first door assembly and the second door assembly are in a closed state, and the third door assembly is in an open state);

[0044] Figure 3It is an internal structure diagram of the photovoltaic heat source comprehensive control system provided in an embodiment of the present application (the first door assembly and the second door assembly are in an open state, and the third door assembly is in a closed state);

[0045] Figure 4 is a schematic structural diagram of a first triangular door panel provided in an embodiment of the present application;

[0046] Figure 5 This is an internal structural diagram of another photovoltaic heat source comprehensive control system provided in an embodiment of the present application (the first door body assembly and the second door body assembly are in a closed state, and the third door body assembly is in an open state).

[0047] Icons: 100-photovoltaic building; 110-photovoltaic channel; 120-first temperature detector; 130-second temperature detector; 140-third temperature detector; 150-wind speed and direction detector; 160-exhaust fan; 200-photovoltaic panel assembly; 300-convergence building; 310-convergence channel; 320-third door assembly; 330-heat pump exhaust outlet; 400-air source heat pump group; 500-first door assembly; 510-first triangular door panel; 520-first door axis; 530-guide plate; 600-second door assembly. DETAILED DESCRIPTION

[0048] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0049] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0050] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0051] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] like Figures 1 to 5 As shown, a photovoltaic heat source comprehensive control system provided in an embodiment of the present application includes a photovoltaic building 100, a photovoltaic panel assembly 200, a confluence building 300 and an air source heat pump group 400;

[0053] The photovoltaic building 100 may be in any structural form, for example, a rectangular building, a cube building, a triangle or an arched building, etc. In this embodiment, a more common triangle building is taken as an example for explanation.

[0054] The triangular photovoltaic building 100 usually has a light-facing side and a light-back side. Taking the actual application in northern my country as an example, the light-facing side is located in the south, and the light-back side is located in the north. A number of photovoltaic panel assemblies 200 are laid on the light-facing side of the top of the photovoltaic building 100 for power generation applications.

[0055] A photovoltaic channel 110 is formed inside the photovoltaic building 100 along its length direction, and the photovoltaic channel 110 extends in the east-west direction. The confluence building 300 is located on one side of the photovoltaic building 100; for example, the confluence building 300 can be arranged on the east side of the photovoltaic building 100, and the confluence channel 310 is formed inside the confluence building 300, and the confluence channel 310 is connected to the downstream air outlet of the photovoltaic channel 110;

[0056] The air source heat pump group 400 is arranged in the confluence channel 310; the air source heat pump utilizes the refrigerant compression refrigeration heat release cycle working principle, uses the heat source in the ambient air as the low-temperature heat source, and exchanges heat through the condenser or evaporator in the traditional air conditioner, and then releases heat energy through the circulating heat exchange system, and finally uses the water pump circulating heat exchange system to transfer energy to the building, so as to meet the user's needs for domestic hot water, floor heating or air conditioning.

[0057] In addition, a first door assembly 500 and a second door assembly 600 are respectively provided at two ends of the photovoltaic building 100 in the length direction (for example, the east-west direction), the first door assembly 500 is used to open or close the upstream air inlet of the photovoltaic channel 110, and the second door assembly 600 is used to open or close the downstream air outlet of the photovoltaic channel 110;

[0058] A third door assembly 320 is disposed on at least one side of the converging building 300 , and the third door assembly 320 is used to open or close the exchange function between the converging channel 310 and the external ambient air.

[0059] It should be noted that when there is no light, there is no other radiation source to cause the photovoltaic panel assembly 200 to change temperature, and its temperature remains consistent with the ambient temperature.

[0060] However, in actual application, the working conditions during the day and at night are as follows:

[0061] daytime:

[0062] The photovoltaic panel assembly 200 is exposed to light radiation, and its surface temperature is higher than the ambient temperature. The back side of the photovoltaic panel assembly 200 is subjected to heat transfer from the front side to the back side due to the thermal conductivity of the material. Therefore, the back side temperature of the photovoltaic panel assembly 200 is higher than the external ambient temperature, and heat is continuously dissipated into the photovoltaic channel 110, so that the temperature inside the photovoltaic channel 110 is higher than the external ambient temperature.

[0063] night:

[0064] There is no other heat source at night, so the temperature of the front and back of the photovoltaic panel assembly 200 is theoretically equal to the external ambient temperature; but generally speaking, the ground temperature at night is lower than the high-altitude temperature. The main reason is that at night, due to the lack of solar radiation, the fluidity of the air causes the near-ground atmospheric temperature to drop faster, and the ground dissipates heat to the atmosphere through atmospheric back radiation, cold air descends, and hot air rises. Due to the continuous atmospheric back radiation of the ground, the ground temperature on winter nights is lower than the atmospheric temperature.

[0065] Similarly, since the photovoltaic panel assembly 200 is made of metal and has good thermal conductivity, the cold air will continue to flow away the heat of the photovoltaic panel assembly 200. This results in the outdoor ambient air entering the photovoltaic channel 110. Under the action of the photovoltaic panel assembly 200, the air flow temperature is lower than the external ambient temperature, resulting in a decrease in the heating efficiency of the air source heat pump in the low temperature environment at night compared to the outdoor natural air environment.

[0066] Therefore, when the photovoltaic heat source comprehensive control system provided in this embodiment is used, when the temperature drops at night and the temperature in the photovoltaic channel 110 is lower than the external environment temperature: the first door body assembly 500 and the second door body assembly 600 jointly close the photovoltaic channel 110, and at the same time, the third door body assembly 320 is opened to allow the external environment air to directly enter the confluence channel 310 to supply air to the air source heat pump group 400. In other words, the air temperature in the confluence channel 310 is consistent with the air temperature of the external environment. This can greatly reduce the low-temperature air in the photovoltaic channel 110 entering the confluence channel 310, which affects the heating efficiency of the air source heat pump group 400.

[0067] When used during the day, the photovoltaic panel assembly 200 is exposed to light radiation and its surface temperature is higher than the ambient temperature. Due to the heat transfer effect, the temperature of the back side of the photovoltaic panel assembly 200 is higher than the external ambient temperature, and the heat is continuously dissipated into the photovoltaic channel 110, so that the temperature inside the photovoltaic channel 110 is also higher than the external ambient temperature. Under this working condition, the third door assembly 320 is closed, and the first door assembly 500 and the second door assembly 600 are all opened, so that the external ambient air can directly enter the photovoltaic channel 110, thereby heating the air, and then enter the confluence channel 310 to supply air to the air source heat pump group 400, thereby achieving the purpose of improving the heating efficiency of the air source heat pump group 400.

[0068] At the same time, when the external ambient air passes through the photovoltaic panels with higher temperatures for heat exchange, the temperature of the photovoltaic backsheet is reduced, thereby achieving the effect of improving the power generation efficiency of the photovoltaic panels (reducing energy consumption, improving efficiency, reducing carbon emissions, and reducing energy expenditures).

[0069] The photovoltaic heat source comprehensive control system provided in this embodiment also includes a first temperature detector 120, a second temperature detector 130 and a third temperature detector 140;

[0070] The first temperature detector 120 is disposed outside the photovoltaic building 100 and is used to detect the external environment temperature;

[0071] The second temperature detector 130 is disposed in the photovoltaic channel 110 and is used to detect the indoor temperature in the photovoltaic channel 110;

[0072] The third temperature detector 140 is disposed in the confluence channel 310 and is used to detect the indoor temperature in the confluence channel 310 .

[0073] In addition, a fourth temperature detector and a fifth temperature detector may be provided. The fourth temperature sensor may be installed on the back plate of the photovoltaic panel assembly 200 to detect the back plate side temperature of the photovoltaic panel assembly 200. The fifth temperature sensor may be installed on the front side of the photovoltaic panel assembly 200 to detect the temperature of the front side of the photovoltaic panel.

[0074] The photovoltaic heat source comprehensive control system provided in this embodiment also includes a wind speed and direction detector 150, which is arranged outside the photovoltaic building 100 and is used to detect outdoor wind speed and wind direction data.

[0075] In actual application, taking into account the influence of external strong wind weather factors, when the wind speed and direction detector 150 detects that the wind direction is consistent with the air inlet of the photovoltaic channel 110, and the wind force is strong enough to reach a preset value, such as level 4 or above, the control system outputs a control signal according to the wind direction signal to close the first door assembly 500, thereby reducing and protecting the strong wind from the impact and damage to the enclosed photovoltaic channel 110.

[0076] In this embodiment, refer to Figure 2 and Figure 3 When a high-power air source heat pump group 400 with an upward exhaust port is used, at least one exhaust fan 160 is set on the wall on the backlight side of the photovoltaic channel 110, for example, two are set, for drawing external environment air into the photovoltaic channel 110; at least one heat pump exhaust port 330 is set on the backlight side wall of the confluence channel 310, for exhausting the air source heat pump group 400 to the external environment.

[0077] Reference Figure 5 When a low-power exhaust port side-mounted air source heat pump group 400 is used, at least one exhaust fan 160 is arranged in the confluence channel 310 to draw external ambient air into the confluence channel 310 .

[0078] Under some special weather conditions, such as hot summer days, the heating time of the air source heat pump group 400 becomes shorter and the automatic standby time becomes longer (the heat exchange fan of the air source heat pump group 400 stops working during automatic standby), resulting in poor heat exchange between the external ambient air and the photovoltaic panel assembly 200 during standby. The temperature of the photovoltaic panel assembly 200 increases accordingly, and the power generation efficiency decreases. When the air source heat pump group 400 is detected to be in the automatic standby state, Figure 3 The exhaust fan 160 in the photovoltaic channel 110 shown in FIG. 1 is automatically started. Figure 5 The exhaust fan 160 in the confluence channel 310 shown is automatically started to allow external ambient air to enter the photovoltaic channel 110 and continue to maintain heat exchange with the photovoltaic panel assembly 200, ensuring that the photovoltaic panel assembly 200 continues to have good power generation efficiency when the air source heat pump group 400 is in standby mode.

[0079] On the contrary, when the air source heat pump unit 400 automatically enters the working state, Figure 3 The exhaust fan 160 in the photovoltaic channel 110 shown in FIG. 1 is turned off. Figure 5 The exhaust fan 160 in the confluence channel 310 shown is turned off, so that the airflow in the photovoltaic channel 110 can meet the heat exchange with the photovoltaic panel assembly 200, while improving the heating efficiency of the air source heat pump group 400.

[0080] In some cases, when the back panel temperature of the photovoltaic panel assembly 200 is detected to be lower than 25°C, Figure 3 and Figure 5 The exhaust fan 160 of the corresponding channel stops working; when it is detected that the photovoltaic panel assembly 200 stops generating electricity, Figure 3 and Figure 5 The exhaust fan 160 in the corresponding channel also stops working.

[0081] In this embodiment, the door frames at the two ends of the photovoltaic building 100 in the length direction may be set as triangles;

[0082] The first door body assembly 500 includes a first triangular door panel 510, a first door shaft 520 and a first driving assembly, wherein the two side edges of the first triangular door panel 510 are respectively connected to the midpoints of the backlight side and the bottom side of the door frame through the first door shaft 520, and the first driving assembly can adopt a reduction motor, and the first driving assembly is connected to the first door shaft 520, and is used to drive the first door shaft 520 to drive the first triangular door panel 510 to open or close the upstream air inlet of the photovoltaic channel 110.

[0083] Specifically, the reduction motor can be directly connected to the first door shaft 520, and the reduction motor can also be connected to the first door shaft 520 through a gear box, which is suitable for different actual installation directions.

[0084] The structure of the second door body assembly 600 is the same as the structure of the first door body assembly 500. Specifically, the second door body assembly 600 includes a second triangular door panel, a second door shaft and a second drive assembly, wherein the two side edges of the second triangular door panel are respectively connected to the midpoints of the backlight side and the bottom side of the door frame through the second door shaft, and the second drive assembly can adopt a reduction motor, and the second drive assembly is connected to the second door shaft to drive the second door shaft to drive the second triangular door panel to open or close the downstream air outlet of the photovoltaic channel 110.

[0085] Specifically, the reduction motor can be directly connected to the second door shaft, and the reduction motor can also be connected to the second door shaft through a gear box, which is suitable for different actual installation directions.

[0086] In this embodiment, the door panel is designed to be a triangle. Since the two sides of the door panel are connected to the midpoints of the backlight side and the bottom side of the door frame through the door axis, the door panel is inclined when rotating, and can guide the external ambient air, so that the airflow entering the photovoltaic channel 110 is attached to the back plate of the photovoltaic panel assembly 200 (on the light-facing side), so that the photovoltaic panel assembly 200 and the air can achieve sufficient heat exchange, thereby increasing the air temperature in the photovoltaic channel 110, which can effectively reduce the energy consumption of the air source heat pump group 400 during heating.

[0087] Preferably, refer to Figure 4 A plurality of guide plates 530 are disposed on one side of the first triangular door panel 510 and the second triangular door panel, and the plurality of guide plates 530 are arranged at intervals according to a preset spacing.

[0088] In actual application, when the door panel is switched to the open state, multiple guide plates 530 are used to evenly introduce the external ambient airflow into the photovoltaic channel 110 to achieve sufficient heat exchange.

[0089] In addition, the door panels of the first door body assembly 500 and the second door body assembly 600 in this embodiment may also be in other shapes, such as a conventional rectangle, and the door panels may also be connected to the door frame by hinges.

[0090] In this embodiment, the confluence building 300 may also be in various structural forms, such as a rectangular parallelepiped, a triangular building, etc., wherein the third door assembly 320 may be provided in one or 2-3 pieces, depending on the specific situation; Figure 2 , Figure 3 and Figure 5 The third door assembly 320 preferably adopts a rolling shutter door, which is convenient for electric adjustment to open or close.

[0091] The photovoltaic heat source comprehensive control system provided in the embodiment of the present application also includes a control device, which is respectively connected to the first drive component, the second drive component, each temperature detector, the wind speed and direction detector, each exhaust fan, and the air source heat pump group through electrical signals.

[0092] For the photovoltaic heat source comprehensive control system provided in this embodiment, in actual application, different control methods can be adopted according to different working conditions to ensure the working efficiency of the air source heat pump group 400 and the cooling effect on the photovoltaic panel assembly 200;

[0093] Below, specific adjustment plans for different working conditions are described in detail.

[0094] 1. In winter, the air source heat pump unit 400 is in heating condition:

[0095] Reference Figure 2 When the temperature in the photovoltaic channel 110 is lower than the external environment temperature, the first door assembly 500 and the second door assembly 600 close the photovoltaic channel 110, and the third door assembly 320 opens the confluence channel 310, so that the external environment air directly enters the confluence channel 310 to supply air to the air source heat pump group 400, thereby reducing the impact of the low-temperature air in the photovoltaic channel 110 on the air source heat pump group 400;

[0096] Reference Figure 3 As the light increases, when the temperature inside the photovoltaic channel 110 is higher than the external environment temperature, the first door assembly 500 and the second door assembly 600 open the photovoltaic channel 110, and the third door assembly 320 closes the confluence channel 310, so that the external environment air directly passes through the photovoltaic channel 110 and is heated up to supply air to the air source heat pump group 400, thereby improving the heating efficiency of the air source heat pump group 400.

[0097] 2. In summer, the air source heat pump unit 400 is in cooling condition:

[0098] Reference Figure 3When the temperature inside the photovoltaic channel 110 is lower than the external ambient temperature, the first door assembly 500 and the second door assembly 600 open the photovoltaic channel 110, and the third door assembly 320 closes the confluence channel 310, so that the external ambient air passes through the photovoltaic channel 110 to form a low-temperature cold air flow to supply air to the air source heat pump group 400, thereby improving the cooling efficiency and reducing power consumption.

[0099] 3. When the air source heat pump unit 400 stops working in summer, the power generation of the photovoltaic panel assembly 200 is increased

[0100] An automatic exhaust fan 160 is provided at the end of the photovoltaic channel 110 or in the confluence channel 310 to ensure the standby interval of the air source heat pump group 400 during heating, and when the air source heat pump group 400 stops running in summer, the external ambient air forms an airflow in the photovoltaic channel 110 and fully exchanges heat with the high-temperature photovoltaic panel assembly 200, so as to reduce the temperature increase of the photovoltaic panel assembly 200 and reduce the power generation efficiency.

[0101] 4. Prevent damage from strong winds

[0102] When the wind speed and direction detector 150 detects that the wind direction is consistent with the air inlet of the photovoltaic channel 110 and the wind force reaches a preset value, such as above level 4, the control system outputs a control signal according to the wind direction signal to close the first door assembly 500, thereby reducing and protecting the impact and damage of strong winds on the enclosed photovoltaic channel 110.

[0103] VII. Working mode of exhaust fan 160 under special weather conditions

[0104] When the weather is warm, the heating time of the air source heat pump becomes shorter and the automatic standby time becomes longer (the heat exchange fan of the air source heat pump stops working during automatic standby), resulting in a poor heat exchange effect between the external ambient air and the photovoltaic panel assembly 200 during standby, and the temperature of the photovoltaic panel assembly 200 increases accordingly, and the power generation efficiency decreases. When the automatic standby state of the air source heat pump is detected, the exhaust fan 160 in the photovoltaic channel 110 or the exhaust fan 160 in the confluence channel 310 automatically starts, allowing the external ambient air to enter the photovoltaic channel 110 and continue to maintain heat exchange with the photovoltaic panel, ensuring that the photovoltaic panel continues to have good power generation efficiency when the air source heat pump group 400 is in standby state. On the contrary, when the air source heat pump group 400 automatically enters the working state, the exhaust fan 160 stops working, allowing the hot air flow in the photovoltaic channel 110 to meet the heat exchange of the photovoltaic panel assembly 200 while meeting the air source heat pump to improve the heating efficiency.

[0105] When the air source heat pump group 400 is completely disabled in summer, when it is detected that the back panel temperature of the photovoltaic panel assembly 200 is higher than the external ambient temperature, the exhaust fan 160 in the photovoltaic channel 110 and the exhaust fan 160 in the convergence channel 310 start working; when it is detected that the back panel temperature of the photovoltaic panel assembly 200 is lower than 25°C, the exhaust fan 160 in the photovoltaic channel 110 and the exhaust fan 160 in the convergence channel 310 stop working; when it is detected that the photovoltaic panel assembly 200 stops generating electricity, the exhaust fan 160 in the photovoltaic channel 110 and the exhaust fan 160 in the convergence channel 310 stop working.

[0106] In summary, the technical solution of the present application can realize flexible adjustment of the first door body assembly 500, the second door body assembly 600 and the third door body assembly 320 according to the external ambient temperature and the indoor temperature, thereby ensuring that the optimal air supply environment is provided for the air source heat pump group 400 to optimize the heating efficiency of the air source heat pump group 400.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention 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 replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A photovoltaic heat source comprehensive control system, characterized in that: Including photovoltaic buildings, photovoltaic panel assemblies, confluence buildings and air source heat pump units; A plurality of photovoltaic panel assemblies are laid on the top sun-facing side of the photovoltaic building for power generation; The interior of the photovoltaic building forms a photovoltaic channel along its length direction; The confluence building is located on one side of the photovoltaic building, and the interior of the confluence building forms a confluence channel, and the confluence channel is interconnected with the downstream air outlet of the photovoltaic channel; The air source heat pump group is arranged in the confluence channel; The two ends of the photovoltaic building in the length direction are respectively provided with a first door assembly and a second door assembly, wherein the first door assembly is used to open or close the upstream air inlet of the photovoltaic channel, and the second door assembly is used to open or close the downstream air outlet of the photovoltaic channel; A third door assembly is provided on at least one side of the confluence building, and the third door assembly is used to open or close the exchange function between the confluence channel and the external environment air; Also includes a first temperature detector, a second temperature detector and a third temperature detector; Wherein, the first temperature detector is arranged outside the photovoltaic building and is used to detect the external environment temperature; The second temperature detector is arranged in the photovoltaic channel and is used to detect the indoor temperature in the photovoltaic channel; The third temperature detector is arranged in the confluence channel, and is used to detect the indoor temperature in the confluence channel; The door frames at the two ends of the photovoltaic building in the length direction are triangular; The first door body assembly includes a first triangular door panel, a first door shaft and a first driving assembly, wherein the two side edges of the first triangular door panel are respectively connected to the midpoints of the backlight side and the bottom side of the door frame through the first door shaft, and the first driving assembly is connected to the first door shaft to drive the first triangular door panel to open or close the upstream air inlet of the photovoltaic channel; The second door body assembly includes a second triangular door panel, a second door shaft and a second driving assembly, wherein the two side edges of the second triangular door panel are respectively connected to the midpoints of the backlight side and the bottom side of the door frame through the second door shaft, and the second driving assembly is connected to the second door shaft to drive the second triangular door panel to open or close the downstream air outlet of the photovoltaic channel; A plurality of guide plates are disposed on one side of the first triangular door panel and the second triangular door panel, and the plurality of guide plates are arranged at intervals according to a preset spacing.

2. The photovoltaic heat source comprehensive control system according to claim 1 is characterized in that: It also includes a wind speed and direction detector, which is arranged outside the photovoltaic building and is used to detect outdoor wind speed and wind direction data.

3. The photovoltaic heat source comprehensive control system according to claim 1 is characterized in that: At least one exhaust fan is provided on the wall on the backlight side of the photovoltaic channel, for extracting external ambient air into the photovoltaic channel; At least one heat pump exhaust port is arranged on the backlight side wall in the converging channel, and is used for exhausting air from the air source heat pump group to the external environment.

4. The photovoltaic heat source comprehensive control system according to claim 1 is characterized in that: At least one exhaust fan is arranged in the converging channel to draw external ambient air into the converging channel.

5. A photovoltaic heat source comprehensive control method, characterized in that: The photovoltaic heat source integrated control system according to any one of claims 1 to 4; the method comprises: In winter, the air source heat pump unit is in heating condition: When the temperature in the photovoltaic channel is lower than the external environment temperature, the first door assembly and the second door assembly close the photovoltaic channel, and the third door assembly opens the confluence channel, so that the external environment air directly enters the confluence channel to supply air to the air source heat pump group; When the temperature inside the photovoltaic channel is higher than the external environment temperature, the first door assembly and the second door assembly open the photovoltaic channel, and the third door assembly closes the confluence channel, so that the external environment air directly passes through the photovoltaic channel to heat up and then supplies air to the air source heat pump group.

6. The control method according to claim 5, characterized in that: The method further comprises: In summer, the air source heat pump unit is in cooling condition: When the temperature inside the photovoltaic channel is lower than the external environment temperature, the first door assembly and the second door assembly open the photovoltaic channel, and the third door assembly closes the confluence channel, so that the external environment air passes through the photovoltaic channel to form a low-temperature cold air flow to supply air to the air source heat pump group.

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