Energy-saving and environmentally friendly building exterior wall system

Abstract

The present invention discloses an energy-saving and environmentally friendly building exterior wall system, which belongs to the technical field of building equipment; it includes a wall, a power generation module, a water storage module and a heat insulation module, the power generation module includes a solar panel, the solar panel is connected to an angle adjustment mechanism, and the solar panel is used to absorb sunlight to generate electricity; the water storage module includes a third inner wall and a plurality of water inlet holes arranged on the wall, and the third inner wall is used to store rainwater or snow water; the heat insulation module is used to slow down the heat conduction between the inside and outside of the wall. The present invention forms an energy-saving and environmentally friendly system for the building exterior wall through the power generation module, the water storage module and the heat insulation module. On the one hand, the power generation module can use solar energy to generate electricity, thereby reducing the pollution of coal-fired power generation; on the other hand, the water storage module can collect rainwater, and the rainwater can be used for building construction, thereby saving water resources.

Description

Technical Field

[0001] The invention belongs to the technical field of building equipment, and in particular relates to an energy-saving and environmentally friendly building exterior wall system. Background Art

[0002] As the world pays more attention to environmental protection and energy consumption, the construction industry has an increasingly urgent need for energy-saving and environmentally friendly building technologies and materials. As an important building exterior wall solution, the energy-saving and environmentally friendly building exterior wall system achieves the goals of energy conservation, emission reduction and environmental protection by optimizing materials and structural design.

[0003] The application areas of energy-saving and environmentally friendly building exterior wall systems mainly include residential buildings, commercial buildings, industrial buildings, etc. By adopting joint energy and environmentally friendly building exterior wall systems, various buildings can achieve goals such as energy conservation and emission reduction, improve building quality, and improve indoor environment. The development of energy-saving and environmentally friendly building exterior wall systems has gone through several stages. Initially, the energy-saving and environmentally friendly performance of building materials, such as the use of environmentally friendly materials and green building design, attracted much attention. With the development of technology and the promotion of its application, joint energy and environmentally friendly building exterior wall systems have gradually taken shape, involving aspects such as exterior wall thermal insulation, solar energy utilization, and rainwater collection and utilization.

[0004] The patent with announcement number CN116695925B discloses an energy-saving and environmentally friendly building exterior wall system, including a building exterior wall substrate and a curtain wall panel, the curtain wall panel includes a photovoltaic panel and a carbon-fixing panel, the photovoltaic panel is used to power the carbon-fixing panel, the building exterior wall substrate includes a plurality of building exterior wall columns and a plurality of beams, the plurality of building exterior wall columns are arranged at intervals in the horizontal direction, and the plurality of beams are arranged at intervals in the vertical direction, and the carbon-fixing panel is installed on the outside of the building exterior wall columns and / or beams through a connecting component, and the connecting component is located on the inside of the carbon-fixing panel. Although this invention patent meets the requirements of energy conservation and environmental protection, it cannot improve energy utilization and reduce energy loss. Summary of the invention

[0005] In view of the above technical problems, the present invention aims to construct a building exterior wall structure with good energy-saving and environmental protection performance by integrating power generation, water storage and heat insulation functions.

[0006] The technical solution adopted by the present invention is: an energy-saving and environmentally friendly building exterior wall system, including a wall body, and also including:

[0007] A power generation module, wherein the power generation module comprises a solar panel, the solar panel is connected to the angle adjustment mechanism, and the solar panel is used to absorb sunlight to generate electricity; the power generation module also comprises a rotating shaft, the rotating shaft is rotatably matched with the wall, and the rotating shaft is fixedly connected to the solar panel;

[0008] A water storage module, the water storage module comprising a third inner wall and a plurality of water inlet holes arranged on the wall, the third inner wall being used to store rainwater or snow water; the water storage module further comprising a water pipe, a solenoid valve being arranged at a connection between the water pipe and the third inner wall, when the water in the third inner wall is used, the solenoid valve is opened to allow the water in the third inner wall to flow out through the water pipe;

[0009] The heat insulation module is used to slow down the heat conduction between the inside and outside of the wall; the heat insulation module includes a second inner wall, an air pump is installed on one side of the outside of the second inner wall, and the air pump is connected to the inside of the third inner wall.

[0010] Preferably, the angle adjustment mechanism includes an outer rod, which is fixedly connected to the solar panel, and the outer rod is slidably matched with the inner rod, and a return spring is arranged between the inner rod and the outer rod, and the end of the inner rod away from the outer rod is rotatably connected to the connecting head, and the connecting head is fixedly connected to the protruding end of the first cylinder, and the first cylinder is fixedly installed on the first rectangular groove in the second inner wall, and a first inner wall is arranged between the second inner wall and the wall body, and the first inner wall is fixedly connected to the wall body, and the first inner wall is used to reduce heat conduction.

[0011] Preferably, a second rectangular groove is provided on the solar panel, and the angle adjustment mechanism also includes a moving block, which is slidably matched with the second rectangular groove on the solar panel, and the moving block forms a ball pair with one end of the ball head rod, and the other end of the ball head rod is slidably matched with the sliding rod, and the sliding rod is connected to the first inner wall.

[0012] Preferably, the water storage module further comprises a filter net, the filter net is arranged inside the third inner wall, a plurality of filter holes are arranged on the filter net, and the filter holes are used to filter impurities in rainwater.

[0013] Preferably, the water storage module further comprises a guide plate, which is fixedly mounted on the outside of the wall, is non-parallel to the top of the wall, and one end of the guide plate close to the water inlet is lower than the end of the guide plate away from the water inlet.

[0014] Preferably, the water storage module also includes a second cylinder fixedly installed inside the third inner wall, the protruding end of the second cylinder is fixedly connected to a support plate, the support plate is slidably installed along the depth direction of the wall, and a plurality of plugs are fixedly installed on the support plate, and the plugs correspond one-to-one to the water inlet holes on the wall.

[0015] Preferably, an air outlet is provided on the second inner wall, a one-way valve is provided at the connection between the air outlet and the second inner wall, and the air inlet of the air pump is connected to the air outlet.

[0016] Preferably, the solar panel is electrically connected to the air pump for supplying power to the air pump.

[0017] Preferably, in winter, an air pump on the outer side of the second inner wall is started, and the air in the second inner wall is pumped out by the air pump to achieve heat insulation.

[0018] Preferably, when the water in the third inner wall is not needed, the water in the third inner wall is drained through the water pipe, and the air pump is connected to the water pipe, the water inlet hole is blocked by a plug, and the air pump continues to extract the air in the third inner wall to further enhance the insulation effect.

[0019] The beneficial effects of the present invention compared with the prior art are:

[0020] (1) The present invention forms an efficient, energy-saving and environmentally friendly building exterior wall system through the effective combination of power generation module, water storage module and heat insulation module. The power generation module absorbs sunlight through solar panels and converts it into electrical energy, thereby reducing dependence on traditional energy sources such as coal, reducing pollution emissions, and having significant environmental benefits. At the same time, the water storage module can effectively collect rainwater and use it, saving water resources, reducing the demand for external water sources, and further enhancing the sustainability of the building.

[0021] (2) The power generation module of the present invention uses solar panels to generate electricity. Solar panels can absorb sunlight during the day and convert it into electrical energy, which not only provides clean energy for buildings, but also reduces dependence on traditional coal-fired power generation, thereby reducing greenhouse gas emissions. By equipping the angle adjustment mechanism, the angle of the solar panel can be dynamically adjusted according to the angle of the sun, so that the solar panel can maximize the reception of sunlight at different time periods, improve the power generation efficiency, and thus greatly improve the energy utilization rate.

[0022] (3) The heat insulation module in the present invention can effectively reduce the heat conduction between the inside and outside of the wall through the design of the second inner wall and the air pump. The air pump draws out the air in the second inner wall to form a vacuum state, thereby reducing heat loss and significantly improving the thermal insulation performance of the building. This design can not only reduce heat loss and energy consumption in winter, but also help isolate the external high temperature in summer and maintain the comfort of the indoor environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 for Figure 1 Schematic diagram of the local enlarged structure at point A in the middle.

[0025] Figure 3 for Figure 1 Schematic diagram of the structure from another angle.

[0026] Figure 4 This is a schematic diagram of the partial structural fracture of the present invention. Figure 1 .

[0027] Figure 5 It is a schematic diagram of the partial structure of the present invention Figure 1 .

[0028] Figure 6 for Figure 5 Schematic diagram of the local enlarged structure at point B in the middle.

[0029] Figure 7 This is a schematic diagram of the fracture of part of the overall structure of the present invention. Figure 2 .

[0030] Figure 8 for Figure 7 Schematic diagram of the partial enlarged structure at point C in the middle.

[0031] Fig. 9 It is a schematic diagram of the partial structure of the present invention Figure 2 .

[0032] Figure numbers: 1-wall; 2-first inner wall; 3-second inner wall; 4-third inner wall; 5-solar panel; 6-rotating shaft; 7-guide plate; 8-water inlet; 9-first rectangular groove; 10-first cylinder; 11-connector; 12-inner rod; 13-outer rod; 14-sliding rod; 15-ball head rod; 16-moving block; 17-second rectangular groove; 18-filter screen; 19-filter hole; 20-air pump; 21-air outlet; 22-water pipe; 23-second cylinder; 24-support plate; 25-plug. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on another element, or there can be one or more centered elements therebetween. When an element is described as "connected" to another element, it can be directly connected to another element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right", "inside", "outside" and similar expressions used in this specification are only for illustrative purposes. In the description of the present invention, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, unless otherwise specified, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; the meaning of "multiple" is two or more. The term "include" and any variation thereof means non-exclusive inclusion, and one or more other features, integers, steps, operations, units, components and / or combinations thereof may be present or added.

[0034] In addition, unless otherwise expressly 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, an indirect connection through an intermediate medium, or a connection between two components. All technical and scientific terms used in this specification have the same meaning as those generally understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0035] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] Example: Figure 1-Figure 9 An energy-saving and environmentally friendly building exterior wall system is shown, comprising a wall 1; and further comprising:

[0037] A power generation module, the power generation module includes a solar panel 5, the solar panel 5 is connected to the angle adjustment mechanism, and the solar panel 5 is used to absorb sunlight to generate electricity;

[0038] A water storage module, the water storage module comprises a third inner wall 4 and a plurality of water inlet holes 8 arranged on the wall 1, the third inner wall 4 is used to store rainwater or snow water;

[0039] The heat insulation module is used to slow down the heat conduction between the inside and outside of the wall 1.

[0040] Specifically, when the sun appears and rotates relative to the wall 1, the angle adjustment mechanism can drive the solar panel 5 to rotate to absorb sunlight to the maximum extent; the melted snow and rainwater can enter the third inner wall 4 through the water inlet 8 and be stored. On the one hand, when water is needed, the water in the third inner wall 4 can be discharged; on the other hand, the water stored in the third inner wall 4 can also reduce the transfer of heat and better achieve heat preservation. The water inlet 8 connects the third inner wall 4 with the upper end surface of the wall 1.

[0041] The power generation module further includes a rotating shaft 6 , which is rotatably matched with the wall 1 , and is fixedly connected to the solar panel 5 , on which a second rectangular groove 17 is provided.

[0042] Specifically, when the angle adjustment mechanism drives the solar panel 5 to rotate, the solar panel 5 rotates around the wall 1 via the rotating shaft 6 .

[0043] An angle adjustment mechanism outer rod 13, the outer rod 13 is fixedly connected to the solar panel 5, the outer rod 13 is slidably matched with the inner rod 12, and a return spring 1 is arranged between the inner rod 12 and the outer rod 13, the end of the inner rod 12 away from the outer rod 13 is rotatably connected to the connector 11, the connector 11 is fixedly connected to the extended end of the first cylinder 10, the first cylinder 10 is fixedly installed on the first rectangular groove 9 in the second inner wall 3, the first inner wall 2 is arranged between the second inner wall 3 and the wall body 1, the first inner wall 2 is fixedly connected to the wall body 1, and the first inner wall 2 is used to reduce the conduction of heat. In order not to interfere with the movement of the first cylinder 10, the connector 11 and the inner rod 12, a long groove not less than the first rectangular groove 9 can be opened in the first inner wall 2 and the upper wall body 1 to facilitate the movement of the connector 11 and the inner rod 12. In addition, thermal insulation cotton can be laid inside the first inner wall 2 for heat insulation.

[0044] Specifically, the first inner wall 2 and the wall body 1 can be connected together by cement, bolts, etc. Some heat insulation materials can also be filled inside the first inner wall 2 to reduce the heat transfer between the inside and outside of the wall body 1 and achieve a better insulation effect.

[0045] The angle adjustment mechanism also includes a moving block 16, which slides with the second rectangular groove 17 on the solar panel 5, and forms a ball pair with one end of the ball head rod 15. The other end of the ball head rod 15 slides with the sliding rod 14, and the sliding rod 14 is connected to the first inner wall 2.

[0046] Specifically, Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, when the extended end of the first cylinder 10 drives the connector 11 to slide on the first rectangular groove 9, the connector 11 will drive the inner rod 12 and the outer rod 13 to slide relative to each other, thereby driving the solar panel 5 to rotate around the rotating shaft 6, and completing the angle adjustment between the solar panel 5 and the wall 1. In this process, the moving block 16 will slide relative to the second rectangular groove 17, and the ball head rod 15 and the sliding rod 14 will also slide relative to each other. Since the ball head rod 15 and the moving block 16 form a ball pair, there will be no interference. As a prior art, a sensor is set on the solar panel 5 to detect the trajectory of the sun's movement and then adjust the angle between the solar panel 5 and the wall 1 in real time so that the solar panel 5 can absorb as much sunlight as possible. This can be achieved by those skilled in the art.

[0047] The water storage module further includes a filter screen 18 , which is disposed inside the third inner wall 4 . The filter screen 18 is provided with a plurality of filter holes 19 , which are used to filter impurities in rainwater.

[0048] Specifically, in order to better filter impurities, a plurality of filter screens 18 may be arranged inside the third inner wall 4 .

[0049] The water storage module also includes a water pipe 22 , and a solenoid valve is provided at the connection between the water pipe 22 and the third inner wall 4 . When the water in the third inner wall 4 is used, the solenoid valve is opened to allow the water in the third inner wall 4 to flow out through the water pipe 22 .

[0050] The water storage module also includes a guide plate 7, which is fixedly mounted on the outside of the wall 1. The guide plate 7 is non-parallel to the top of the wall 1, and one end of the guide plate 7 close to the water inlet 8 is lower than the other end of the guide plate 7 away from the water inlet 8.

[0051] Specifically, the purpose of setting the guide plate 7 in an inclined state is to make it easier for rainwater or melted snow water falling on the guide plate 7 to flow into the water inlet hole 8. In addition, the guide plate 7 is located above the solar panel 5, which can shield the solar panel 5 from rain to a certain extent, preventing rainwater from falling directly on the solar panel 5, thereby reducing the potential loss of rainwater to the solar panel 5 and extending the service life of the solar panel. It should be noted that the design of the guide plate 7 enables it to be disassembled or adjusted to the installation position to meet the installation requirements of different walls, while ensuring that the best water collection effect can be achieved in various environments.

[0052] The water storage module also includes a second cylinder 23 fixedly installed inside the third inner wall 4, the protruding end of the second cylinder 23 is fixedly connected to a support plate 24, the support plate 24 is slidably installed along the depth direction of the wall 1, and a plurality of plugs 25 are fixedly installed on the support plate 24, and the plugs 25 correspond one-to-one to the water inlet holes 8 on the wall 1.

[0053] Specifically, when the third inner wall 4 is not needed to store water, the second cylinder 23 can be started, so that the extended end of the second cylinder 23 drives the support plate 24 and the plug 25 to move, so that the plug 25 is inserted into the water inlet hole 8 to block the water inlet hole 8, and the support plate 24 slides along the depth direction of the wall 1, and the width of the support plate 24 is smaller than the width of the inside of the third inner wall 4, that is, the water entering the third inner wall 4 from the water inlet hole 8 will not be blocked by the support plate 24. The second cylinder 23, the support plate 24 and the plug 25 are located above the filter screen 18.

[0054] The heat insulation module includes a second inner wall 3, an air pump 20 is installed on one side of the outside of the second inner wall 3, and the air pump 20 is connected to the inside of the third inner wall 4; an air outlet 21 is provided on the second inner wall 3, and a one-way valve is provided at the connection between the air outlet 21 and the second inner wall 3, and the air inlet of the air pump 20 is connected to the air outlet 21. An air replenishing hole can also be provided on the second inner wall 3 to replenish air into the third inner wall 4, and the air replenishing hole needs to be closed when the air pump 20 is working. The solar panel 5 is located in the power generation module of the outer wall of the building, which is responsible for absorbing sunlight and converting it into electrical energy. The output end of the solar panel 5 is connected to the power input end of the air pump 20 through a cable to provide the required electrical energy for the air pump 20. The power required by the air pump 20 during operation is completely dependent on the clean energy generated by the solar panel 5, achieving energy self-sufficiency and further improving the energy utilization efficiency of the building.

[0055] Specifically, in order to improve the thermal insulation effect, the interior of the second inner wall 3 may also be filled with thermal insulation materials to reduce the conduction of heat on the wall 1 .

[0056] Working principle: When the sun comes out and the solar panel 5 can generate electricity through sunlight, the solar panel 5 begins to absorb sunlight and converts sunlight into electrical energy for storage. As the sun moves relative to the wall 1, in order to make the solar panel 5 generate electricity better, it is necessary to transform the angle between the solar panel 5 and the wall 1 so that the solar panel 5 absorbs as much sunlight as possible. In the process of adjusting the angle of the solar panel 5, the first cylinder 10 fixedly installed in the first rectangular groove 9 is started, and the connecting head 11 is driven to slide on the first rectangular groove 9 through the extended end of the first cylinder 10, thereby driving the inner rod 12 to move through the connecting head 11, so that the inner rod 12 can push or pull the outer rod 13 to rotate, so that the solar panel 5 can rotate on the wall 1 through the rotating shaft 6, so that the solar panel 5 can have a larger area to absorb sufficient sunlight and generate green electricity. During the rotation of the solar panel 5, the moving block 16 will slide relative to the second rectangular groove 17. Since the moving block 16 and the ball head rod 15 are in ball-jointed cooperation, and the ball head rod 15 and the sliding rod 14 are in sliding cooperation, the sliding rod 14 and the ball head rod 15 will not interfere with the movement of the moving block 16, that is, the rotation of the solar panel 5 will not be interfered with. The sliding rod 14 and the ball head rod 15 can make the rotation of the solar panel 5 more stable. It should be noted that the solar panel 5 absorbs sunlight to generate electricity and stores the electricity, which belongs to the prior art and can be implemented by those skilled in the art. It will not be repeated here. In addition, the sensor detects the angle between the solar panel 5 and the sun, and then controls the first cylinder 10 to extend or retract, which also belongs to the prior art and can be implemented through a control program, which can be implemented by those skilled in the art.

[0057] In the process of generating electricity by the solar panel 5, there is no rainwater to be collected, so the second cylinder 23 can be started at this time, so that the extended end of the second cylinder 23 drives the support plate 24 and the plug 25 to move to the side close to the guide plate 7, and finally the plug 25 is inserted into the water inlet 8, which can effectively prevent dust, leaves and other debris in the air from entering the third inner wall 4. Even if dust, leaves and other debris enter the third inner wall 4, they can be filtered through the filter 18, and the filter 18 can be taken out of the third inner wall 4 regularly for replacement. Of course, in winter, sufficient sunlight will melt the snow and produce snow water. If it is necessary to collect snow water, then the second cylinder 23 is controlled to drive the support plate 24 and the plug 25 to leave the water inlet 8. As for the control of the start and stop and the movement state of the second cylinder 23, it can be realized by a control program, or even by manually operating an external power supply, which will not be repeated here. Those skilled in the art can choose a suitable operation mode according to actual needs.

[0058] When the water in the third inner wall 4 is needed, the external water-using equipment can be communicated with the water pipe 22, and then the electromagnetic valve at the connection between the water pipe 22 and the third inner wall 4 is opened. Of course, a faucet can also be set at the connection between the water pipe 22 and the wall 1 instead of the electromagnetic valve.

[0059] The water stored in the third inner wall 4 can, on the one hand, be used for water resource utilization; on the other hand, it can reduce the heat conduction between the inside and outside of the wall 1, thereby improving the thermal insulation effect. Moreover, the flow of water in the third inner wall 4 can also take away the heat. In summer, the flow of water in the third inner wall 4 can take away the heat in the wall 1, thereby achieving cooling.

[0060] In this embodiment, the air pump 20 on the outer side of the second inner wall 3 can be started in winter, and the air in the second inner wall 3 can be pumped out by the air pump 20, so that the second inner wall 3 forms a vacuum state, which plays an effective heat insulation role. Specifically, the air pump 20 discharges the air in the second inner wall 3, reduces the heat conduction inside and outside the wall, thereby improving the thermal insulation performance of the building and preventing heat loss. In some cases, when the water in the third inner wall 4 is not needed, the water in the third inner wall 4 can be discharged through the water pipe 22. At this time, the air pump 20 is connected to the water pipe 22, so that the air pump 20 continues to pump out the air in the third inner wall 4 and further enhances the heat insulation effect. In order to ensure the vacuum state, the water inlet 8 will be blocked by the plug 25.

[0061] In this embodiment, the design of the second inner wall 3 being evacuated by the air pump 20 has a significant heat insulation effect on the function of storing water in the third inner wall 4. Specifically, in summer, when water is stored in the third inner wall 4, the vacuum state formed in the second inner wall 3 can effectively prevent external heat conduction, thereby reducing the influence of external high temperature on the water temperature in the third inner wall 4. Through this heat insulation effect, the lower temperature of the water in the third inner wall 4 can be maintained, and the water body can not only avoid evaporation due to high temperature, but also play a role in cold storage, further improving the energy efficiency of the building. In winter, after the second inner wall 3 is evacuated, it can also effectively isolate the influence of external cold air on the water in the third inner wall 4, prevent the water body temperature from being too low, and thus avoid possible freezing. At this time, a heater can also be set in the third inner wall 4 to heat the water inside to ensure its suitable temperature. This can not only improve the thermal insulation performance of the wall, but also prevent the stored water from freezing, and realize the effective use of water. This design realizes the temperature management of the water body in different seasons through the vacuum insulation mechanism, stores heat in winter and stores cold in summer, further improving the energy efficiency and environmental protection performance of the building exterior wall system.

[0062] In summary, the multiple modules of the present invention cooperate with each other to form a closed-loop energy-saving system. The clean electricity provided by the solar power generation module can not only be used by the building itself, but also provide power support for the water storage module and the insulation module. In addition, the water storage module reduces the demand for external water sources by collecting rainwater for use, thereby further improving the environmental benefits of the building in terms of resource management. The optimized design of each module enables the present invention to achieve the best energy-saving effect in different seasons and environments.

[0063] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention has been described in detail with reference to the above embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the above embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An energy-saving and environmentally friendly building exterior wall system, comprising a wall (1), characterized in that: Also includes: A power generation module, the power generation module comprising a solar panel (5), the solar panel (5) being connected to an angle adjustment mechanism, the solar panel (5) being used to absorb sunlight to generate electricity; the power generation module further comprising a rotating shaft (6), the rotating shaft (6) being rotatably matched with the wall (1), and the rotating shaft (6) being fixedly connected to the solar panel (5); a water storage module, the water storage module comprising a third inner wall (4) and a plurality of water inlet holes (8) arranged on the wall (1), the third inner wall (4) being used to store rainwater or snow water; the water storage module further comprising a water pipe (22), a solenoid valve being arranged at the connection between the water pipe (22) and the third inner wall (4), and when water in the third inner wall (4) is used, the solenoid valve is opened to release the water. A magnetic valve is provided to allow water in the third inner wall (4) to flow out through the water pipe (22); a heat insulation module, the heat insulation module being used to slow down the heat conduction between the inside and outside of the wall (1); the heat insulation module comprises a second inner wall (3), an air pump (20) is installed on one side of the outside of the second inner wall (3), the air pump (20) is connected to the inside of the third inner wall (4); the angle adjustment mechanism comprises an outer rod (13), the outer rod (13) is fixedly connected to the solar panel (5), the outer rod (13) is slidably matched with the inner rod (12), a return spring is provided between the inner rod (12) and the outer rod (13), and an end of the inner rod (12) away from the outer rod (13) is rotatably connected to the connector (11) The connecting head (11) is fixedly connected to the protruding end of the first cylinder (10); the first cylinder (10) is fixedly mounted on the first rectangular groove (9) in the second inner wall (3); a first inner wall (2) is arranged between the second inner wall (3) and the wall body (1); the first inner wall (2) is fixedly connected to the wall body (1); the first inner wall (2) is used to reduce heat conduction; a second rectangular groove (17) is arranged on the solar panel (5); the angle adjustment mechanism further comprises a moving block (16); the moving block (16) is slidably matched with the second rectangular groove (17) on the solar panel (5); the moving block (16) and one end of the ball head rod (15) form a ball pair; the ball head The other end of the rod (15) is slidably matched with the sliding rod (14), and the sliding rod (14) is connected to the first inner wall (2); the water storage module also includes a second cylinder (23) fixedly installed inside the third inner wall (4), the protruding end of the second cylinder (23) is fixedly connected to a support plate (24), the support plate (24) is slidably installed along the depth direction of the wall (1), and a plurality of plugs (25) are fixedly installed on the support plate (24), and the plugs (25) correspond to the water inlet holes (8) on the wall (1) one by one; in winter, the air pump (20) on the outer side of the second inner wall (3) is started, and the air in the second inner wall (3) is sucked away by the air pump (20) to achieve a heat insulation effect;When the water in the third inner wall (4) is not needed, the water in the third inner wall (4) is drained through the water pipe (22), and the air pump (20) is connected to the water pipe (22), the water inlet hole (8) is blocked by the plug (25), and the air pump (20) continues to pump out the air in the third inner wall (4) to further enhance the heat insulation effect. ; 2. The energy-saving and environmentally friendly building exterior wall system according to claim 1 is characterized in that: The water storage module further comprises a filter screen (18), wherein the filter screen (18) is arranged inside the third inner wall (4), and a plurality of filter holes (19) are arranged on the filter screen (18), wherein the filter holes (19) are used to filter impurities in rainwater.

3. The energy-saving and environmentally friendly building exterior wall system according to claim 2 is characterized in that: The water storage module further comprises a guide plate (7), wherein the guide plate (7) is fixedly mounted on the outside of the wall (1), the guide plate (7) is in a non-parallel state with the upper part of the wall (1), and an end of the guide plate (7) close to the water inlet hole (8) is lower than an end of the guide plate (7) away from the water inlet hole (8).

4. The energy-saving and environmentally friendly building exterior wall system according to claim 3 is characterized in that: An air outlet (21) is provided on the second inner wall (3), a one-way valve is provided at the connection between the air outlet (21) and the second inner wall (3), and an air inlet of the air pump (20) is connected to the air outlet (21).

5. The energy-saving and environmentally friendly building exterior wall system according to claim 4 is characterized in that: The solar panel (5) is electrically connected to the air pump (20) for supplying power to the air pump (20).

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