An inverter and a control method thereof

Abstract

This application discloses an inverter and its control method, belonging to the field of inverter technology. The inverter includes: a housing, with a control unit disposed inside the housing; a ventilation structure including: a ventilation assembly disposed in the housing, the ventilation assembly comprising a body and a cover; the body having an exhaust port, the cover covering the exhaust port; and a power assembly disposed in the housing and connected to the cover; the power assembly is electrically connected to the control unit to drive the cover to open or close the exhaust port under the control of the control unit. Thus, when the inverter needs ventilation, the exhaust port is opened, putting the ventilation structure in an open state; when ventilation is not required, the exhaust port is closed, putting the ventilation structure in a closed state, preventing moisture and polluting gases from entering the inverter.

Description

Technical Field

[0001] This application belongs to the field of inverter technology, specifically relating to an inverter and its control method. Background Technology

[0002] Waterproof vent valves are common components in inverters, providing waterproofing, ventilation, and pressure balancing. However, existing waterproof vent valves cannot prevent moisture and polluting gases from entering the inverter. This can lead to condensation when moisture enters the inverter, causing insulation failures, or inverter malfunction when polluting gases enter. Summary of the Invention

[0003] Purpose of this application: This application provides an inverter to solve the problem that existing waterproof and breathable valves cannot prevent moisture and polluting gases from entering the inverter; this application also provides an inverter control method.

[0004] Technical solution: This application provides an inverter, including:

[0005] A housing, the control unit being housed inside the housing;

[0006] The ventilation structure includes:

[0007] A ventilation assembly is disposed in the housing, the ventilation assembly including a body and a cover; the body has an exhaust port, and the cover is disposed over the exhaust port;

[0008] A power assembly is disposed in the housing and connected to the cover; the power assembly is electrically connected to the control unit to drive the cover to open or close the exhaust port under the control of the control unit.

[0009] In some embodiments, the body further includes an air inlet and an air exchange channel, the air inlet and the exhaust outlet are disposed opposite to each other, and the air exchange channel connects the air inlet and the exhaust outlet;

[0010] The ventilation assembly also includes a filter element disposed at the air inlet.

[0011] In some embodiments, the body includes:

[0012] A first air guide section is disposed in the housing;

[0013] The second air guide is connected to the first air guide and is attached to the side of the housing away from the power component; the surface of the second air guide away from the housing is provided with an installation groove, and the filter element is disposed in the installation groove.

[0014] In some embodiments, the cover is an elastic structure.

[0015] In some embodiments, the power assembly includes a power unit and a transmission unit, the power unit being connected between the transmission unit and the cover.

[0016] In some embodiments, a transmission assembly is further included, the transmission assembly being disposed between the power assembly and the cover.

[0017] In some embodiments, the transmission component is any one of a rotating shaft, a lead screw, a belt, or a linear module.

[0018] In some embodiments, the ventilation assembly further includes:

[0019] A protective cover is disposed on the side of the filter element opposite to the main body, and an air-permeable gap is provided between the protective cover and the filter element.

[0020] In some embodiments, the filter element is a waterproof and breathable membrane.

[0021] In some embodiments, it also includes:

[0022] A first fixing member is connected to the housing, and the first fixing member is sleeved on the side of the power assembly away from the housing;

[0023] The second fixing member is connected to the housing, and the second fixing member has a through hole, through which the body passes.

[0024] In some embodiments, the inverter further includes a mounting plate on which the ventilation assembly and / or the power assembly are disposed.

[0025] In some embodiments, the mounting plate includes:

[0026] A first mounting plate is provided, the power assembly is disposed on the first mounting plate, and the first mounting plate is connected to the housing.

[0027] In some embodiments, the mounting plate includes:

[0028] The second mounting plate, on which the ventilation assembly is disposed; the first mounting plate and the second mounting plate are connected.

[0029] In some embodiments, the inverter further includes a sensor disposed in the housing, and the sensor is electrically connected to the control unit.

[0030] Accordingly, this application also provides an inverter control method for controlling the inverter through a control unit in the inverter as described in any of the above embodiments, the inverter control method comprising:

[0031] The operating state of the ventilation structure in the inverter is obtained; the operating state is configured to include an on state and an off state.

[0032] Obtain the environmental data of the inverter operation;

[0033] Based on the operating status and the environmental data, the power component in the ventilation structure is controlled to drive the cover to open or close the exhaust port, thus switching the operating status.

[0034] In some embodiments, the step of controlling the power component in the ventilation structure to drive the cover to open or close the exhaust port and switch the operating state based on the operating state and the environmental data includes:

[0035] In response to the environmental data being greater than or equal to a preset threshold, and the working state being the closed state, the power component in the ventilation structure is controlled to move the cover away from the exhaust port, thereby switching the ventilation structure to the open state.

[0036] In response to the environmental data being less than the preset threshold and the operating state being the open state, the power component is controlled to cover the exhaust port, switching the ventilation structure to the closed state.

[0037] In some embodiments, the step of controlling the power component in the ventilation structure to drive the cover to open or close the exhaust port and switch the operating state based on the operating state and the environmental data further includes:

[0038] In response to the ventilation structure switching to the open state, the duration of the open state is recorded;

[0039] In response to the duration exceeding a preset duration, the power component is controlled to cover the exhaust port with the cover, switching the ventilation structure to the closed state.

[0040] In some embodiments, before obtaining the operating state of the ventilation structure, the inverter control method further includes:

[0041] The operating status of the inverter is obtained, and the operating status is configured to include grid-connected operating status and off-grid operating status.

[0042] In some embodiments, it also includes:

[0043] In response to the operating state being off-grid and the working state being the open state, the power component is controlled to cover the exhaust port, switching the ventilation structure to the closed state.

[0044] In some embodiments, the environmental data includes air pressure, temperature, humidity, and halogen concentration.

[0045] Beneficial Effects: Compared with the prior art, the inverter provided in this application includes: a housing, with a control unit disposed inside the housing; a ventilation structure including: a ventilation assembly disposed in the housing, the ventilation assembly including a body and a cover; the body having an exhaust port, the cover covering the exhaust port; and a power assembly disposed in the housing and connected to the cover; the power assembly is electrically connected to the control unit to drive the cover to open or close the exhaust port under the control of the control unit. Thus, when the inverter needs ventilation, the exhaust port is opened, putting the ventilation structure in an open state; when ventilation is not required, the exhaust port is closed, putting the ventilation structure in a closed state, preventing moisture and polluting gases from entering the inverter.

[0046] It is understood that, compared with the prior art, the inverter control method provided in this application includes all the technical features and effects of the above-mentioned ventilation structure, and will not be repeated here. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 A schematic diagram of the ventilation structure of the inverter provided in this application embodiment when it is in the open state;

[0049] Figure 2 A schematic diagram of the ventilation structure of the inverter provided in this application embodiment when it is in the off state;

[0050] Figure 3 A schematic diagram of the ventilation component in the ventilation structure of the inverter provided in this embodiment of the application;

[0051] Figure 4 An exploded structural diagram of the ventilation component in the ventilation structure of the inverter provided in this application embodiment;

[0052] Figure 5 This is a schematic diagram of the power component in the ventilation structure of the inverter provided in the embodiments of this application;

[0053] Figure 6 A schematic diagram of the mounting plate in the ventilation structure of the inverter provided in this embodiment of the application;

[0054] Figure 7 A schematic diagram of the second fixing component in the ventilation structure of the inverter provided in this embodiment of the application;

[0055] Figure 8 Another schematic diagram of the ventilation structure of the inverter provided in the embodiment of this application when it is in the open state;

[0056] Figure 9 Another schematic diagram of the ventilation structure of the inverter provided in the embodiment of this application when it is in the off state;

[0057] Figure 10 This is a schematic diagram of the structure of an inverter provided in an embodiment of this application;

[0058] Figure 11 This is another schematic diagram of the inverter provided in the embodiments of this application;

[0059] Figure 12 A flowchart illustrating the inverter control method provided in an embodiment of this application;

[0060] Figure 13 A flowchart illustrating Embodiment 1 of the inverter control method provided in this application;

[0061] Figure 14 A flowchart illustrating Embodiment 2 of the inverter control method provided in this application;

[0062] Figure 15 A flowchart illustrating embodiment 3 of the inverter control method provided in this application;

[0063] Figure 16 A flowchart illustrating embodiment 4 of the inverter control method provided in this application;

[0064] Figure 17 This is a flowchart of embodiment 5 of the inverter control method provided in this application.

[0065] Reference numerals: 100-Mounting plate; 110-Mounting hole; 120-First mounting plate; 130-Second mounting plate; 200-Ventilation assembly; 210-Body; 211-Exhaust port; 212-Inlet port; 213-Ventilation channel; 214-First air guide; 215-Second air guide; 216-Mounting groove; 220-Cover; 230-Filter element; 240-Protective cover; 300-Power assembly; 310-Power unit; 320-Transmission unit; 400-Transmission assembly; 500-First fixing member; 600-Second fixing member; 610-Through hole; 700-Housing shell. Detailed Implementation

[0066] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0067] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. In the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0068] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of exemplary embodiments and may not be to scale. The modules or processes shown in the drawings are not necessarily essential for implementing this application and therefore should not be used to limit the scope of protection of this application.

[0069] The applicant discovered that some ventilation structures use airflow devices to blow air onto the breathable membrane to remove moisture. However, this method cannot prevent moisture from entering the inverter, nor can it isolate external pollutants. This still leads to condensation when moisture enters the inverter, causing insulation failure inside the inverter, or inverter failure when pollutants enter the inverter.

[0070] In view of this, embodiments of this application provide an inverter to solve at least part of the above-mentioned technical problems.

[0071] Please see Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 10 and Figure 11 , Figure 1 This illustration shows a structural diagram of the inverter provided in this application when the ventilation structure is in the open state; Figure 2 This illustration shows a structural diagram of the inverter provided in this application when the ventilation structure is in the off state; Figure 3 This illustration shows a structural diagram of the ventilation component in the ventilation structure of the inverter provided in an embodiment of this application; Figure 5 This illustration shows a schematic diagram of the power component in the ventilation structure of the inverter provided in an embodiment of this application; Figure 10 This illustration shows a structural diagram of an inverter provided in an embodiment of this application; Figure 11 This application provides an inverter with another structural schematic diagram according to an embodiment of the present application. The present application provides an inverter, including: a housing 700, with a control unit disposed inside the housing 700; and a ventilation structure, including a ventilation assembly 200 and a power assembly 300. The ventilation assembly 200 is disposed on the housing 700 and includes a body 210 and a cover 220; the body 210 has an exhaust port 211, and the cover 220 covers the exhaust port 211; the power assembly 300 is disposed on the housing 700 and connected to the cover 220, and the power assembly 300 is connected to the control unit to drive the cover 220 to open or close the exhaust port 211 under the control of the control unit. The power assembly 300 can be disposed on the housing 700 or inside the housing 700, and can be connected to the cover 220. Specifically, the power unit 300 is connected to the cover 220 to drive it to open or close the exhaust port 211. This means that ventilation can be flexibly controlled according to actual conditions. For example, the exhaust port 211 can be opened to ensure sufficient fresh air enters when rapid ventilation is needed, while the exhaust port 211 can be closed when ventilation is not needed or when it is necessary to prevent adverse external factors from entering. This enhances the flexibility and controllability of the ventilation structure and improves its overall applicability.

[0072] It should be noted that this embodiment achieves intelligent humidity balance inside the inverter by setting a ventilation structure on the housing 700. In environments with high humidity, the control unit can control the exhaust port 211 to open, expelling the humid air inside and preventing water vapor from condensing into water droplets inside the inverter, thus avoiding problems such as short circuits and corrosion that could damage electronic components. When the external humidity is high, the exhaust port 211 is closed to prevent external moisture from entering, maintaining internal dryness and achieving intelligent humidity balance and effective protection inside the inverter. Simultaneously, under the control of the control unit, the exhaust port 211 opens or closes in a timely manner, ensuring necessary ventilation while blocking external pollutants and contaminating gases to the greatest extent possible. This is crucial for maintaining the cleanliness of the electronic components inside the inverter, reducing faults such as poor contact and short circuits caused by pollutant accumulation, and improving the reliability and stability of the inverter.

[0073] In some embodiments, the main body 210 further includes an air inlet 212 and a ventilation channel 213, with the exhaust port 211 and the air inlet 212 arranged opposite to each other, and the ventilation channel 213 connecting the exhaust port 211 and the air inlet 212; the ventilation assembly 200 also includes a filter element 230, which is disposed at the air inlet 212. Specifically, by setting the ventilation channel 213 to connect the opposite exhaust port 211 and air inlet 212, a smoother gas flow path can be provided for the application environment, facilitating air exchange, maintaining good ventilation, effectively refreshing the internal air, and avoiding air pollution. Secondly, the filter element 230 disposed at the air inlet 212 can intercept dust, impurities, and other particulate matter during gas exchange, preventing pollutants from entering the interior of the inverter, ensuring the cleanliness of the internal air, and preventing external dust from entering the interior of the inverter through the ventilation structure.

[0074] It should be noted that the ventilation structure provided in this application is used for the ventilation of the inverter, that is, the exchange of internal gas and external gas between the inverter and the outside gas. Therefore, the exhaust port 211 and the air inlet 212 of the ventilation structure are divided according to the flow direction of the external gas. In actual use, the external gas enters the ventilation channel 213 through the air inlet 212, and then enters the interior of the inverter through the exhaust port 211. At the same time, the gas inside the inverter enters the ventilation channel 213 through the exhaust port 211, and then is discharged to the outside through the air inlet 212. Thus, when ventilation is needed, the exhaust port 211 is opened, so that the ventilation structure is in the open state, and the filter element 230 intercepts dust, impurities and other particulate matter in the gas at the air inlet 212; when ventilation is not needed, the exhaust port 211 is closed, so that the ventilation structure is in the closed state, preventing moisture and polluting gas from entering the ventilation channel.

[0075] Please see Figure 4 , Figure 4An exploded view of the ventilation component in the ventilation structure of the inverter provided in this application embodiment is shown. In some embodiments, the body 210 includes: a first air guide 214 and a second air guide 215. The first air guide 214 is disposed in the housing 700, and the second air guide 215 is connected to the first air guide 214 and is attached to the side of the housing 700 away from the power component 300. A mounting groove 216 is formed on the surface of the second air guide 215 away from the housing 700, and a filter element 230 is disposed in the mounting groove 216. Specifically, by placing the first air guide 214 on the housing 700, and connecting the second air guide 215 to the first air guide 214 and fitting it against the side of the housing 700 away from the power assembly 300, the sealing effect of the ventilation assembly 200 is increased, ensuring the airtightness of the ventilation structure and enabling the ventilation and pressure regulation functions of the ventilation structure to be performed more effectively. Furthermore, the structure of the entire ventilation assembly 200 is made more compact, making reasonable use of the space on both sides of the housing 700, which helps to reduce the overall volume of the ventilation structure, making it easier to install in various inverters, especially in applications with high space requirements. In addition, the mounting slot 216 provides a dedicated and relatively stable mounting position for the filter element 230, which can better fix the filter element 230 and prevent it from shifting or falling off due to vibration during inverter operation, thereby ensuring the filtration effect and stability of the filter element 230. Understandably, the housing 700 may have a mounting hole 110, and the first air guide 214 passes through the mounting hole 110 to further improve the stability of the main body 210 during installation.

[0076] In some embodiments, the cover 220 is an elastic structure. It is understood that the cover 220 can be either elastic or inelastic, with the elastic structure being the preferred structure as it better adapts to the shape and minor surface irregularities of the exhaust port 211. That is, regardless of whether the edge of the exhaust port 211 is completely flat, the elastic cover 220 can achieve a tight fit through its own elastic deformation, thereby achieving a better sealing effect and ensuring the airtight performance of the ventilation structure in the closed state. Simultaneously, during inverter operation, vibrations, temperature changes, etc., may occur, causing minor changes in the relative position or shape between the exhaust port 211 and the cover 220. The elastic cover 220 can adaptively adjust its fit with the exhaust port 211 in real time due to its elasticity, always maintaining good sealing performance of the ventilation structure and reducing the possibility of sealing failure due to external factors.

[0077] Please see Figure 5 , Figure 5This illustration shows a schematic diagram of the power component in the ventilation structure of the inverter provided in an embodiment of this application. In some embodiments, the power component 300 includes a power unit 310 and a transmission unit 320, with the power unit 310 connected between the transmission unit 320 and the cover 220. In this embodiment, power is provided by the power unit 310, and the transmission unit 320 transmits the power to the cover 220, allowing for more precise control of the opening and closing of the cover 220. Based on this, by designing parameters such as the output of the power unit 310 and the transmission ratio of the transmission unit 320, the movement speed and displacement of the cover 220 can be precisely controlled, thereby better meeting the requirements of the ventilation structure for the opening and closing degree and time of the exhaust port 211 under different operating conditions, and optimizing the ventilation performance of the ventilation structure. This avoids delays that may be caused by manual operation or other indirect power methods, significantly improving the response speed of the cover 220. When it is necessary to quickly open or close the exhaust port 211 to cope with changes in internal and external pressure of the inverter or other needs, the ventilation structure quickly responds to the demand and rapidly enters the corresponding working state. Understandably, the power unit 310 can select a suitable power source, such as a motor or electromagnet, to provide sufficient driving force based on actual needs. The transmission unit 320 can flexibly adjust the transmission method as needed, such as gear transmission, belt transmission, or linkage transmission, thereby enabling the power assembly 300 to adapt to different working environments and load requirements. For example, when a larger driving force is required, a higher-power power unit 310 can be selected in conjunction with a suitable transmission unit 320 to ensure that the cover 220 can open or close smoothly, even when there is a certain pressure difference or external resistance at the exhaust port 211.

[0078] To further improve the applicability of the ventilation structure, please refer to the following: Figure 8 and Figure 9 , Figure 8 This illustration shows another structural diagram of the inverter provided in this application when the ventilation structure is in the open state;

[0079] Figure 9This illustration shows another structural diagram of the inverter's ventilation structure when it is in the off state, as provided in an embodiment of this application. In some embodiments, the ventilation structure further includes a transmission assembly 400, which is disposed between the power assembly 300 and the cover 220. The installation position and spatial layout of the ventilation structure may vary in different inverters. Therefore, this application flexibly designs and adjusts the transmission assembly 400 according to specific installation conditions, enabling the power assembly 300 and the cover 220 to achieve effective connection and collaborative operation in various complex spatial environments. Furthermore, as an intermediate connecting component, the transmission assembly 400 can be easily matched and connected with different types of power assemblies 300 without significantly modifying the basic structure of the power assembly 300 and the cover 220. This provides greater flexibility in designing and selecting the power assembly 300 for the ventilation structure, better meeting the performance requirements and cost control needs of different inverters.

[0080] In this embodiment, the key to the effectiveness of the ventilation structure lies in the ability of the cover 220 to effectively open or close the exhaust port 211, which requires precise control of the movement trajectory of the cover 220. Therefore, this application uses the precise transmission of the transmission component 400 to constrain the movement trajectory of the cover 220, causing it to open or close in a predetermined manner. This ensures the precision of the fit between the cover 220 and the exhaust port 211, achieving a good sealing effect and preventing gas leakage or abnormal air intake. On the other hand, in actual use, the output power of the power component 300 may have some instability or pulsation. The transmission component 400 can play a buffering and coordinating role, making the movement of the cover 220 smoother and more continuous, eliminating vibrations and impacts during power transmission, and preventing abnormal phenomena such as jamming or bouncing of the cover 220 during opening and closing. This extends the service life of the ventilation structure and improves its reliability and stability.

[0081] To achieve the aforementioned functions of the transmission assembly 400, in some embodiments, the transmission assembly 400 is any one of a rotating shaft, a lead screw, a belt, or a linear module. Specifically, based on factors such as the distance and relative position between the power assembly 300 and the cover 220, as well as the required power transmission direction, a suitable transmission method can be selected to ensure high-efficiency power transmission, reduce power loss, and enable the cover 220 to respond more quickly and stably to the drive of the power assembly 300, achieving smooth opening and closing of the exhaust port 211. For example, when there is a certain distance or angular deviation between the power assembly 300 and the cover 220, the transmission assembly 400 can solve the installation problem by using any one or a combination of a rotating shaft, a lead screw, a belt, or a linear module, improving the versatility and adaptability of the ventilation structure.

[0082] Please refer to it again. Figure 4To further ensure the effectiveness of the filter element 230 when the exhaust port 211 is open, in some embodiments, the ventilation assembly 200 also includes a protective cover 240. The protective cover 240 is located on the side of the filter element 230 facing away from the main body 210, and there is a venting gap between the protective cover 240 and the filter element 230. Specifically, after passing through the filter element 230, the gas enters the outside through the venting gap. This process buffers and regulates the speed and pressure of the airflow. In other words, the venting gap acts like a pressure stabilizing chamber, making the exhaust airflow more stable and preventing drastic airflow fluctuations from impacting the precision components or sensitive parts inside the inverter, thus helping to maintain the stability of the inverter's operation.

[0083] In some embodiments, the filter element 230 is a waterproof and breathable membrane. Specifically, the waterproof and breathable membrane has excellent waterproof performance, effectively preventing external moisture, such as rainwater, water vapor, and liquid water, from entering the inverter, providing a reliable waterproof barrier for the inverter and ensuring its normal operation even when ventilation is required in humid or harsh weather conditions. While waterproof, the membrane also has good breathability, ensuring gas exchange between the inverter's interior and the external environment. This allows hot air and moisture to escape smoothly while allowing fresh air to enter, aiding in heat dissipation and normal operation of the inverter. Furthermore, the waterproof and breathable membrane can filter out fine particles in the air, such as dust, pollen, and bacteria, providing additional protection for the inverter.

[0084] To increase the stability of the ventilation structure, please refer again. Figure 1 and Figure 2 Please refer to the following: Figure 7 , Figure 7This illustration shows a schematic diagram of the second fixing member in the ventilation structure of the inverter provided in this application embodiment. In some embodiments, the ventilation structure further includes a first fixing member 500 and a second fixing member 600. The first fixing member 500 is connected to the housing 700 and is sleeved on the side of the power component 300 opposite to the housing 700. The second fixing member 600 is connected to the housing 700 and has a through hole 610, through which the body 210 passes. In this way, the first fixing member 500 provides additional support and fixation for the power component 300, preventing the power component 300 from loosening, shifting, or even falling off due to vibrations or shaking during inverter operation. This ensures that the power component 300 is always kept in the correct installation position, thereby ensuring that it stably provides power for the opening and closing of the cover 220 and maintaining the normal ventilation function of the ventilation structure. Similarly, the second fixing member 600 can further fix the body 210, restricting its movement in the plane and to a certain extent its vertical movement, so that the body 210 can still be firmly fixed on the housing 700 during the operation of the inverter, even if it is affected by external forces such as airflow impact and vibration, maintaining the structural integrity of the ventilation assembly 200 and ensuring the stable ventilation and filtration functions of the ventilation structure.

[0085] In some embodiments, please refer to Figure 6 , Figure 6 This illustration shows a schematic diagram of the mounting plate in the ventilation structure of the inverter provided in this embodiment. The inverter also includes a mounting plate 100, on which the ventilation assembly 200 and / or power assembly 300 are disposed. Specifically, the mounting plate 100 provides a fixed mounting position for the ventilation assembly 200 and power assembly 300, making their positions on the inverter more stable. During inverter operation, this prevents the ventilation assembly 200 and power assembly 300 from shifting or loosening due to vibration, impact, or other factors, thus improving the overall structural stability of the inverter.

[0086] To further enhance the applicability of the ventilation structure, please refer to [the relevant documentation]. Figure 8 and Figure 9In some embodiments, the mounting plate 100 includes a first mounting plate 120, on which the power assembly 300 is disposed, and the first mounting plate 120 is connected to the housing 700. This application uses the first mounting plate 120 to specifically fix and support the power assembly 300, improving the stability of the inverter during operation and preventing displacement or loosening of the power assembly 300 due to vibration, impact, or other factors. Secondly, the connection between the first mounting plate 120 and the housing 700 also provides a more direct support and fixing point for the power assembly 300. Furthermore, the first mounting plate 120 can be set flush with the housing 700, or it can have an angle α between it and the housing 700. The specific value of the angle α is not limited and can be set according to the spatial shape around or inside the inverter housing 700 and the layout of other components. It is understood that, depending on the different inverter installation scenarios, in addition to being connected to the housing 700, the first mounting plate 120 can also be set separately from the housing 700, as long as the connection between the power assembly 300 and the ventilation assembly 200 is maintained. In this way, the three-dimensional space inside and around the inverter can be fully utilized, and the installation posture of the ventilation structure can be flexibly adjusted to better adapt to various different inverters, thereby improving the versatility and adaptability of the ventilation structure.

[0087] To further enhance the applicability of the ventilation structure, please refer to [the relevant documentation]. Figure 8 and Figure 9In some embodiments, the mounting plate 100 further includes a second mounting plate 130, on which the ventilation assembly 200 is disposed; the first mounting plate 120 and the second mounting plate 130 are connected. Specifically, compared to directly mounting on the housing 700, placing the ventilation assembly 200 on the second mounting plate 130 provides an independent mounting platform for the ventilation assembly 200, allowing for better spatial separation of the ventilation assembly 200 from other components, avoiding mutual interference with components such as the power assembly 300, facilitating the planning and design of the overall structure, and improving the utilization rate of the inverter's internal space. It is understood that the first mounting plate 120 and the second mounting plate 130 can simultaneously conform to the housing 700. Furthermore, the first mounting plate 120 and the second mounting plate 130 can be connected in parallel, or they can be connected such that the first mounting plate 120 and the second mounting plate 130 have an included angle α. The specific value of the included angle α is not limited. It can be adjusted according to the specific spatial shape around and inside the inverter housing 700 and the layout of other components, making full use of the three-dimensional space inside and outside the inverter, so as to better adapt to various different inverters and improve the versatility and adaptability of the ventilation structure. It should be noted that when the mounting plate 100 is set, the first air guide 214 can be set on the mounting plate 100, and the second air guide 215 can be attached to the side of the mounting plate 100 away from the power assembly 300. The surface of the second air guide 215 away from the mounting plate 100 has a mounting groove 216, and the filter element 230 is set in the mounting groove 216. Alternatively, the first fixing member 500 and the second fixing member 600 can be set on the mounting plate 100, and the mounting plate 100 can provide corresponding fixation and support to improve the stability of the inverter.

[0088] In some embodiments, the inverter further includes sensors disposed in the housing (700), and the sensors are electrically connected to the control unit. Specifically, the control unit triggers control of the power assembly 300 by acquiring environmental data from the sensors. To improve the adaptability of the inverter's ventilation, the sensors include pressure sensors, temperature sensors, humidity sensors, halogen sensors, etc. Furthermore, the control unit and the power assembly 300 can be electrically connected via a communication harness to achieve intelligent control of the power assembly 300.

[0089] Taking a temperature sensor as an example, the temperature sensor can monitor the internal temperature of the housing 700 in real time. When the temperature rises to a certain threshold, the control unit receives the signal from the sensor and accordingly controls the ventilation structure power component 300 to drive the cover 220 to open the exhaust port 211, promoting air circulation, accelerating heat dissipation, and maintaining the internal temperature of the inverter within a reasonable operating range. When the temperature drops, the control unit can control the cover 220 to close the exhaust port 211, preventing excessive heat dissipation or the entry of adverse external factors. This achieves the function of precisely adjusting heat dissipation according to actual temperature requirements, ensuring stable and reliable operation of the inverter, and reducing the risk of performance degradation or failure due to overheating.

[0090] In summary, the inverter provided in this application embodiment opens the exhaust port 211 when ventilation is needed, so that the ventilation structure is in the open state and the filter element 230 intercepts dust, impurities and other particulate matter in the gas; when ventilation is not needed, the exhaust port 211 is closed, so that the ventilation structure is in the closed state and moisture and polluting gas are prevented from entering the inverter.

[0091] Accordingly, this application also provides an inverter control method for an inverter, used to control the inverter through a control unit in the inverter as described in any of the above embodiments. Please refer to... Figure 12 , Figure 12 The flowchart illustrating the inverter control method provided in the embodiments of this application is shown. The inverter control method includes the following S1 to S3.

[0092] S1, Obtain the operating status of the ventilation structure in the inverter; the operating status is configured to include an on state and a off state. S2, Obtain environmental data for inverter operation. S3, Based on the operating status and environmental data, control the power component 300 in the ventilation structure to drive the cover 220 to open or close the exhaust port 211, switching the operating status. Specifically, this application first obtains the operating status of the ventilation structure, whether it is on or off. Based on this, combined with environmental data, it determines whether the inverter needs ventilation. When ventilation is needed, the exhaust port 211 is opened, putting the ventilation structure in the open state, and the filter 230 intercepts dust, impurities, and other particulate matter in the gas; when ventilation is not needed, the exhaust port 211 is closed, putting the ventilation structure in the closed state, preventing moisture and polluted gas from entering the ventilation channel.

[0093] In some embodiments, environmental data includes air pressure, temperature, humidity, and halogen concentration, which can be acquired by sensors in the inverter. It is understood that different environmental data can affect the inverter's internal heat dissipation, humidity balance, and pressure stability. Switching the operating state of the ventilation structure based on this detailed environmental data ensures that the ventilation structure operates optimally under various complex external environments, avoiding problems such as insufficient ventilation affecting heat dissipation or excessive ventilation introducing too many adverse external factors. This optimizes the overall permeability of the ventilation structure and improves the inverter's performance. It should be noted that when comparing environmental data with preset thresholds in this application, a single environmental data point can be compared with a preset threshold, or multiple environmental data points can be compared with multiple preset thresholds simultaneously.

[0094] In some embodiments, step S3, which controls the power component 300 in the ventilation structure to drive the cover 220 to open or close the exhaust port 211 and switch the operating state based on the operating state and environmental data, includes: responding to environmental data being greater than or equal to a preset threshold and the operating state being closed, controlling the power component 300 in the ventilation structure to drive the cover 220 to open the exhaust port 211, switching the ventilation structure to an open state; and responding to environmental data being less than the preset threshold and the operating state being open, controlling the power component 300 to drive the cover 220 to close the exhaust port 211, switching the ventilation structure to a closed state. Specifically, by setting a preset threshold and controlling the opening or closing of the exhaust port 211 based on the comparison result between the environmental data and the threshold, a precise response to environmental changes is achieved. For example, regarding environmental data such as temperature, if the temperature value obtained by the sensor is higher than the preset threshold, it means that the internal heat dissipation demand of the inverter is increasing. At this time, switching the ventilation structure to the open state can introduce cool air from the outside in time to help dissipate heat. Conversely, when the temperature value obtained by the sensor is lower than the preset threshold, closing the ventilation structure can prevent too much cool air from entering and causing the internal temperature of the inverter to be too low or other adverse effects. This precise control mechanism allows the inverter to adapt well to different temperature environmental conditions. Similarly, the same applies to other environmental factors such as humidity and air pressure, comprehensively improving the inverter's adaptability to complex environments.

[0095] In this embodiment, the opening and closing of the ventilation structure is determined based on actual environmental data, thus avoiding the resource waste caused by keeping the ventilation structure constantly open or closed regardless of environmental conditions. For example, if the ventilation structure is always open when a large amount of ventilation is not needed (environmental data has not reached a preset threshold), it may lead to additional heat loss, moisture ingress, and dust ingress, increasing the inverter's energy consumption and maintenance costs. However, with the precise control of this embodiment, the ventilation structure is only opened when there is a genuine need (environmental data reaches a threshold), achieving optimized utilization of air, energy, and other resources, and improving overall resource utilization efficiency.

[0096] In some embodiments, the step of controlling the power component 300 in the ventilation structure to open or close the exhaust port 211 of the cover 220 and switch the operating state based on the operating state and environmental data further includes: recording the duration of the open state in response to the ventilation structure switching to the open state; and controlling the power component 300 to cover the exhaust port 211 with the cover 220 in response to the duration being greater than a preset duration, thus switching the ventilation structure to the closed state. Specifically, recording the duration of the open state of the ventilation structure can effectively prevent over-ventilation due to prolonged continuous ventilation, reasonably control the air exchange volume, and maintain the relative stability of the internal environment of the inverter. In addition, since prolonged opening of the ventilation structure may also allow excessive external pollutants and moisture to enter the inverter, even if the environmental data meets the threshold requirements when the ventilation structure is turned on, excessive pollutants and moisture entering over time will still have adverse effects on the inverter, such as dust accumulation causing obstructed heat dissipation of electronic components and increased short-circuit risk, and moisture accumulation causing corrosion. Setting a time limit for shutting down helps reduce interference from external factors on the inverter and protects the inverter's internal environment.

[0097] In some embodiments, before obtaining the operating state of the ventilation structure, the inverter control method further includes: obtaining the operating state of the inverter, wherein the operating state is configured to include grid-connected operating state and off-grid operating state. Thus, by first obtaining the operating state of the inverter, this application can clearly know whether the inverter is currently in grid-connected or off-grid operating state. When it is determined to be in grid-connected operating state, this often means that the inverter is in a relatively critical operating phase with potentially high load. Based on this, further obtaining environmental data for comprehensive judgment allows for precise control of the ventilation structure's power component to drive the cover to open or close the air inlet. This achieves on-demand adaptation of the ventilation structure's ventilation function according to actual operating conditions, ensuring that the ventilation volume meets the specific needs of the inverter for heat dissipation and ventilation during grid-connected operation, guaranteeing its stable and efficient operation. Similarly, when the inverter is in off-grid operating state, it is also necessary to obtain the inverter's operating environmental data for subsequent steps.

[0098] In some embodiments, the inverter control method further includes: in response to the operating state being off-grid operation and the working state being on, controlling the power component 300 to cover the exhaust port 211 with the cover 220, switching the ventilation structure to a closed state. Specifically, when the inverter is in an off-grid operation state other than grid-connected operation, its power loss, heat generation, etc., are generally relatively small, and the demand for heat dissipation is not as high as during grid-connected operation. Switching the ventilation structure from the open state to the closed state at this time can prevent unnecessary entry of outside air into the inverter, reduce heat loss caused by continuous air flow and the corresponding additional electrical energy consumed to maintain a suitable internal temperature, which helps to achieve energy saving and consumption reduction, enabling the inverter to utilize energy more efficiently during non-critical operation phases and reduce overall operating costs. In addition, closing the ventilation structure in the off-grid operation state can effectively prevent dust, pollen, moisture, and polluting gases from the external environment from entering the inverter, reducing the risk of short circuits or corrosion of electronic components, improving the reliability and service life of the inverter, and ensuring its stable performance.

[0099] The inverter control method of this application is further illustrated below through several specific embodiments.

[0100] Example 1:

[0101] Please see Figure 13 , Figure 13 This illustration shows a flowchart of Embodiment 1 of the inverter control method provided in this application. When the inverter is running in grid-connected mode, the internal components generate high temperatures, leading to increased internal pressure. Simultaneously, it may be in a high-humidity or high-pollution environment. In this case, the inverter control method includes:

[0102] S101: Determine whether the internal air pressure a of the inverter is greater than or equal to the preset threshold x1, and / or whether the temperature b is greater than or equal to the preset threshold y1, and / or whether the humidity c is greater than or equal to the preset threshold z1, and / or whether the halogen gas concentration is greater than or equal to the preset threshold m1 (the above judgment conditions can be a single condition or multiple conditions simultaneously, or several conditions can be satisfied).

[0103] S102: When the environmental data read by the sensor is greater than or equal to the preset threshold, the control unit controls the power component 300 to drive the cover 220 to open the exhaust port 211, so that the internal and external gases of the inverter can be exchanged.

[0104] S103: When the environmental data read by the sensor is less than the preset threshold, the control unit controls the power component 300 to drive the cover 220 to close the exhaust port 211, so that the internal and external gases cannot be exchanged.

[0105] Example 2:

[0106] Please see Figure 14 , Figure 14 This is a flowchart illustrating Embodiment 2 of the inverter control method provided in this application. When the inverter is running in grid-connected mode, and a preset duration is set for when the ventilation structure is in the open state, the inverter control method includes:

[0107] S201: Determine whether the internal air pressure a of the inverter is greater than or equal to the preset threshold x1, and / or whether the temperature b is greater than or equal to the preset threshold y1, and / or whether the humidity c is greater than or equal to the preset threshold z1, and / or whether the halogen gas concentration is greater than or equal to the preset threshold m1 (the above judgment conditions can be a single condition or multiple conditions simultaneously, or several conditions can be satisfied).

[0108] S202: When the environmental data read by the sensor is greater than or equal to the preset threshold, the control unit controls the power component 300 to drive the cover 220 to open the exhaust port 211, so that the internal and external gases of the inverter can be exchanged.

[0109] S203: After the ventilation structure is opened, whether the control unit controls the cover 220 to move for a time t that is greater than or equal to the preset time q1;

[0110] S204: When time t is greater than the preset duration q1, the control unit controls the power component 300 to drive the cover 220 to close the exhaust port 211, so that the internal and external gases cannot be exchanged.

[0111] Example 3:

[0112] Please see Figure 15 , Figure 15 This illustration shows a flowchart of embodiment 3 of the inverter control method provided in this application; when the inverter is not connected to the grid, and the ventilation structure is set to be in the open state for a preset duration, the inverter control method includes:

[0113] S401: Determine whether the internal air pressure a of the inverter is greater than or equal to the preset threshold x2, and / or whether the temperature b is greater than or equal to the preset threshold y2, and / or whether the humidity c is greater than or equal to the preset threshold z2, and / or whether the halogen gas concentration is greater than or equal to the preset threshold m2 (the above judgment conditions can be a single condition or multiple conditions simultaneously, or several conditions can be satisfied).

[0114] S402: When the environmental data read by the sensor is greater than or equal to the preset threshold, the control unit controls the power component 300 to drive the cover 220 to open the exhaust port 211, so that the internal and external gases of the inverter can be exchanged.

[0115] S403: After the ventilation structure is opened, determine whether the time t for the control unit to move the cover 220 is greater than the preset time q2;

[0116] S404: When time t is greater than the preset duration q2, the control unit controls the power component 300 to drive the cover 220 to close the exhaust port 211, so that the internal and external gases cannot be exchanged.

[0117] Example 4:

[0118] Please see Figure 16 , Figure 16 This illustration shows a flowchart of Embodiment 4 of the inverter control method provided in this application. First, it determines whether the inverter is connected to the grid. If the inverter is not connected to the grid, the ventilation structure is directly shut down via the control unit. The inverter control method includes:

[0119] S501: Determine if the inverter is running;

[0120] S502: Determine whether the internal air pressure a of the inverter is greater than or equal to the preset threshold x3, and / or whether the temperature b is greater than or equal to the preset threshold y3, and / or whether the humidity c is greater than or equal to the preset threshold z3, and / or whether the halogen gas concentration is greater than or equal to the preset threshold m3 (the above judgment conditions can be a single condition or multiple conditions simultaneously, or several conditions can be satisfied).

[0121] S503: When the environmental data read by the sensor is greater than or equal to the preset threshold, the control unit controls the power component 300 to drive the cover 220 to open the exhaust port 211, so that the internal and external gases of the inverter can be exchanged.

[0122] S504: When the environmental data read by the sensor is less than the preset threshold, the control unit controls the power component 300 to drive the cover 220 to close the exhaust port 211, so that the internal and external gases cannot be exchanged.

[0123] Example 5:

[0124] Please see Figure 17 , Figure 17 This illustration shows a flowchart of Embodiment 5 of the inverter control method provided in this application. First, it determines whether the inverter is connected to the grid. Simultaneously, a preset duration is set for the ventilation structure to remain in the open state. When the inverter is not connected to the grid, the ventilation structure is directly shut down via the control unit. The inverter control method includes:

[0125] S601: Determine if the inverter is running;

[0126] S602: Determine whether the internal air pressure a of the inverter is greater than or equal to the preset threshold x3, and / or whether the temperature b is greater than or equal to the preset threshold y3, and / or whether the humidity c is greater than or equal to the preset threshold z3, and / or whether the halogen gas concentration is greater than or equal to the preset threshold m3 (the above judgment conditions can be a single condition or multiple conditions simultaneously, or several conditions can be satisfied).

[0127] S603: When the environmental data read by the sensor is greater than or equal to the preset threshold, the control unit controls the power component 300 to drive the cover 220 to open the exhaust port 211, so that the internal and external gases of the inverter can be exchanged.

[0128] S604: After the ventilation structure is opened, does the control unit control the cover 220 to move for a time t greater than q3?

[0129] S605: When time t is greater than the preset duration q3, the control unit controls the power component 300 to drive the cover 220 to close the exhaust port 211, so that the internal and external gases cannot be exchanged.

[0130] It is understood that, compared with the prior art, the inverter control method provided in this application includes all the technical features and effects of the above-mentioned ventilation structure, and will not be repeated here.

[0131] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0132] The present application provides a detailed description of an inverter and its control method, and uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of the present application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features; and these modifications or substitutions 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 application.

Claims

1. An inverter, characterized in that, include: A housing (700) is provided inside the housing (700); The ventilation structure includes: A ventilation assembly (200) is disposed in the housing (700). The ventilation assembly (200) includes a body (210) and a cover (220). The body (210) has an exhaust port (211), and the cover (220) covers the exhaust port (211). A power assembly (300) is disposed in the housing (700) and connected to the cover (220); the power assembly (300) is electrically connected to the control unit to drive the cover (220) to open or close the exhaust port (211) under the control of the control unit.

2. The inverter according to claim 1, characterized in that, The main body (210) also has an air inlet (212) and an air exchange channel (213), the air inlet (212) and the exhaust port (211) are arranged opposite to each other, and the air exchange channel (213) connects the air inlet (212) and the exhaust port (211); The ventilation assembly (200) further includes a filter (230) disposed at the air inlet (212).

3. The inverter according to claim 2, characterized in that, The body (210) includes: A first air guide (214) is disposed on the housing (700); The second air guide (215) is connected to the first air guide (214), and the second air guide (215) is attached to the side of the housing (700) away from the power assembly (300); the surface of the second air guide (215) away from the housing (700) is provided with a mounting groove (216), and the filter element (230) is disposed in the mounting groove (216).

4. The inverter according to claim 1, characterized in that, The cover (220) is an elastic structure.

5. The inverter according to claim 1, characterized in that, The power assembly (300) includes a power unit (310) and a transmission unit (320), wherein the power unit (310) is connected between the transmission unit (320) and the cover (220).

6. The inverter according to claim 1, characterized in that, It also includes a transmission assembly (400) disposed between the power assembly (300) and the cover (220).

7. The inverter according to claim 6, characterized in that, The transmission component (400) is any one of a rotating shaft, a lead screw, a belt, or a linear module.

8. The inverter according to claim 2, characterized in that, The ventilation assembly (200) also includes: A protective cover (240) is disposed on the side of the filter element (230) away from the body (210), and there is an air-permeable gap between the protective cover (240) and the filter element (230).

9. The inverter according to claim 2, characterized in that, The filter element (230) is a waterproof and breathable membrane.

10. The inverter according to claim 1, characterized in that, Also includes: A first fixing member (500) is connected to the housing (700), and the first fixing member (500) is sleeved on the side of the power assembly (300) away from the housing (700); The second fixing member (600) is connected to the housing (700), and the second fixing member (600) has a through hole (610), through which the body (210) passes.

11. The inverter according to any one of claims 1 to 10, characterized in that, The inverter also includes a mounting plate (100), on which the ventilation assembly (200) and / or the power assembly (300) are disposed.

12. The inverter according to claim 11, characterized in that, The mounting plate (100) includes: A first mounting plate (120) is provided, the power assembly (300) is disposed on the first mounting plate (120), and the first mounting plate (120) is connected to the housing (700).

13. The inverter according to claim 12, characterized in that, The mounting plate (100) also includes: The second mounting plate (130) is provided with the ventilation assembly (200); the first mounting plate (120) and the second mounting plate (130) are connected.

14. The inverter according to claim 1, characterized in that, The inverter also includes a sensor disposed in the housing (700), and the sensor is electrically connected to the control unit.

15. An inverter control method, characterized in that, The inverter control method comprises: a control unit in the inverter as described in any one of claims 1 to 14, wherein the inverter control method includes: The operating state of the ventilation structure in the inverter is obtained; the operating state is configured to include an on state and an off state. Obtain the environmental data of the inverter operation; Based on the operating state and the environmental data, the power component (300) in the ventilation structure is controlled to drive the cover (220) to open or close the exhaust port (211) and switch the operating state.

16. The inverter control method according to claim 15, characterized in that, The step of controlling the power component (300) in the ventilation structure to drive the cover (220) to open or close the exhaust port (211) based on the working state and the environmental data, and switching the working state, includes: In response to the environmental data being greater than or equal to a preset threshold and the working state being the closed state, the power component (300) in the ventilation structure is controlled to move the cover (220) away from the exhaust port (211) and switch the ventilation structure to the open state; In response to the environmental data being less than the preset threshold and the working state being the open state, the power component (300) is controlled to cover the exhaust port (211) with the cover (220) and the ventilation structure is switched to the closed state.

17. The inverter control method according to claim 16, characterized in that, The step of controlling the power component (300) in the ventilation structure to drive the cover (220) to open or close the exhaust port (211) based on the working state and the environmental data, and switching the working state, further includes: In response to the ventilation structure switching to the open state, the duration of the open state is recorded; In response to the duration being greater than a preset duration, the power assembly (300) is controlled to cover the exhaust port (211) with the cover (220), and the ventilation structure is switched to the closed state.

18. The inverter control method according to claim 15, characterized in that, Before obtaining the operating state of the ventilation structure, the inverter control method further includes: The operating status of the inverter is obtained, and the operating status is configured to include grid-connected operating status and off-grid operating status.

19. The inverter control method according to claim 18, characterized in that, Also includes: In response to the operating state being off-grid operating state and the working state being the open state, the power component (300) is controlled to cover the exhaust port (211) with the cover (220) and switch the ventilation structure to the closed state.

20. The inverter control method according to any one of claims 15 to 19, characterized in that, The environmental data includes air pressure, temperature, humidity, and halogen concentration.

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