An inverter and an electrical apparatus

Abstract

The application provides an inverter and an electrical equipment, which comprise a cabinet, a heat dissipation assembly, a main heat generating assembly and a non-main heat generating assembly. The cabinet is provided with an inner cavity, and the cabinet is provided with a first air inlet and a first air outlet. The heat dissipation assembly is arranged in the inner cavity, and the heat dissipation assembly forms a heat dissipation air duct. The main heat generating assembly is located in the heat dissipation air duct, and the non-main heat generating assembly is located in the inner cavity and outside the heat dissipation air duct. The inverter provided by the application has a good heat dissipation effect.

Description

Technical Field

[0001] This application relates to the field of power equipment technology, specifically to an inverter and electrical equipment. Background Technology

[0002] Inverters, as core equipment in energy storage and photovoltaic systems, are widely used in outdoor scenarios (such as rooftops, ground-mounted power stations, and industrial and commercial plants). In outdoor environments, these devices are exposed to complex conditions such as rain, dust, and temperature fluctuations for extended periods, posing a dual challenge to their protection level and heat dissipation performance.

[0003] In related technologies, an inverter includes a chassis and main and non-main heat-generating components located within the chassis. The chassis is equipped with an air inlet and an air outlet. Air enters the chassis through the air inlet, passes through the main and non-main heat-generating components, and then flows out through the first air outlet.

[0004] However, the inverter has poor heat dissipation. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides an inverter and electrical equipment with better heat dissipation.

[0006] To solve the above-mentioned technical problems, this application provides an inverter, comprising:

[0007] The chassis has an internal cavity, a first air inlet, and a first air outlet;

[0008] A heat dissipation component is installed in the inner cavity, and the heat dissipation component forms a heat dissipation air duct, which is connected to the first air inlet and the first air outlet respectively.

[0009] The main heat-generating component is located within the heat dissipation duct;

[0010] The non-main heat-generating component is located inside the cavity and outside the heat dissipation duct.

[0011] Optionally, the heat dissipation component includes:

[0012] The air duct component, located within the cavity, is configured to form a heat dissipation air duct;

[0013] The fan, located inside the cavity, is configured to drive air through the first air inlet, the inlet of the cooling duct, the outlet of the cooling duct, and the first air outlet to the outside of the chassis.

[0014] Optionally, the air duct components include:

[0015] The first air duct section is configured to enclose the first air inlet so that the first air inlet is not connected to the outside of the heat dissipation air duct.

[0016] The second air duct section is connected to the first air duct section at one end along the first direction, which is the extension direction of the second air duct section.

[0017] Optionally, the main heating component includes at least one of the following:

[0018] A transformer, which extends along a first direction;

[0019] A radiator, which extends along a first direction;

[0020] At least two first capacitors are arranged along a first direction.

[0021] Optionally, the inner cavity includes a first receiving cavity and a second receiving cavity, a first air inlet communicating with the first receiving cavity, and a first air outlet communicating with the second receiving cavity;

[0022] The air duct and fan are located in the first receiving cavity. The fan's air intake is connected to the heat dissipation air duct, and the fan's air exhaust is connected to the second receiving cavity.

[0023] Optionally, it also includes an upper mounting bracket, which is located at the back of the chassis and has a second air inlet connected to the first air inlet.

[0024] The upper bracket is used to connect to the component to be connected, so that there is a gap between the second air inlet and the first air inlet and the component to be connected.

[0025] Optionally, it also includes a dustproof net, which is detachably connected to the upper bracket and is configured to block the second air inlet.

[0026] Optionally, the first air outlet is located at the bottom of the chassis, and the first air inlet is located on the side wall of the chassis;

[0027] Alternatively, the first exhaust vent can be located at the bottom of the chassis, and the first intake vent can be located at the back of the chassis.

[0028] Optionally, it may also include at least one of the following:

[0029] The first waterproof component is disposed around the top of the first air inlet and on opposite sides of the first air inlet along the second direction;

[0030] The second waterproof component is located in the inner cavity. The second waterproof component and the side wall of the chassis enclose a third receiving cavity. The third receiving cavity is connected to the first air inlet. The top of the second waterproof component is provided with a third air inlet, which is connected to the third receiving cavity and the heat dissipation duct.

[0031] This application provides an electrical device including any of the inverters described above.

[0032] This application provides an inverter, including a chassis, a heat dissipation assembly, a main heat-generating assembly, and a non-main heat-generating assembly. The chassis has an inner cavity, a first air inlet, and a first air outlet. The heat dissipation assembly is disposed within the inner cavity, forming a heat dissipation duct. The main heat-generating assembly is located within the heat dissipation duct, while the non-main heat-generating assembly is located within the inner cavity but outside the heat dissipation duct. This allows the heat dissipation assembly to concentrate airflow. Compared to related technologies where both the main and non-main heat-generating components are located within the heat dissipation duct, in this application only the main heat-generating component is located within the heat dissipation duct. Therefore, a larger airflow passes through the main heat-generating component, thereby improving the cooling effect on the main heat-generating component located within the heat dissipation duct. Attached Figure Description

[0033] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0034] Figure 1 A front view of a first structure of an inverter provided in an embodiment of this application;

[0035] Figure 2 A left view of a first structure of an inverter provided in an embodiment of this application;

[0036] Figure 3 A rear view of a first structure of an inverter provided in an embodiment of this application;

[0037] Figure 4 A bottom view of a first structure of an inverter provided in an embodiment of this application;

[0038] Figure 5 An exploded view of a first structure of an inverter provided in an embodiment of this application;

[0039] Figure 6 for Figure 1 A cross-sectional view along the AA direction;

[0040] Figure 7 A schematic diagram of the structure of the heat dissipation component, the main heat-generating component, and the non-main heat-generating component in the inverter provided in the embodiments of this application;

[0041] Figure 8 A schematic diagram of the structure of the air duct, main heating component, and non-main heating component in the inverter provided in the embodiments of this application;

[0042] Figure 9This is a schematic diagram of the structure of the main heating component and non-main heating component in the inverter provided in the embodiments of this application;

[0043] Figure 10 for Figure 9 The left view;

[0044] Figure 11 for Figure 9 The right view;

[0045] Figure 12 A schematic diagram of the bottom shell, partition plate, and second waterproof component of the inverter provided in the embodiments of this application;

[0046] Figure 13 for Figure 12 The left view;

[0047] Figure 14 for Figure 12 Rear view;

[0048] Figure 15 for Figure 12 A bottom view;

[0049] Figure 16 for Figure 6 A magnified view of a section at point B in the middle;

[0050] Figure 17 A perspective view of a first structure of an inverter provided in an embodiment of this application;

[0051] Figure 18 This is a schematic diagram of the installation of the dust filter in the inverter provided in the embodiments of this application;

[0052] Figure 19 A front view of a second structure of an inverter provided in an embodiment of this application;

[0053] Figure 20 A left view of a second structure of an inverter provided in an embodiment of this application;

[0054] Figure 21 Right view of a second structure of an inverter provided in an embodiment of this application;

[0055] Figure 22 A bottom view of a second structure of the inverter provided in an embodiment of this application;

[0056] Figure 23 An exploded view of a second structure of the inverter provided in the embodiments of this application;

[0057] Figure 24 for Figure 19 A cross-sectional view along the CC direction;

[0058] Figure 25A cross-sectional view of a second structure of an inverter provided in an embodiment of this application;

[0059] Figure 26 for Figure 25 A magnified view of a section at point D.

[0060] Explanation of reference numerals in the attached figures:

[0061] 100 - Chassis; 110 - First air inlet; 120 - First air outlet; 130 - Front cover; 140 - Bottom shell; 150 - Partition plate; 160 - First receiving cavity; 170 - Second receiving cavity; 180 - First connecting structure; 181 - First bent edge; 182 - Second bent edge; 190 - Second connecting structure; 191 - Third bent edge; 192 - Fourth bent edge; 1100 - Second air outlet;

[0062] 200 - Circuit board;

[0063] 300 - Air duct component; 310 - First air duct section; 320 - Second air duct section;

[0064] 400 - Main heat-generating component; 410 - Transformer; 420 - Heat sink; 430 - First capacitor; 440 - Photovoltaic side transistor; 450 - Low-voltage DC side transistor; 460 - Inverter side transistor;

[0065] 500-fan;

[0066] 600 - Upper bracket; 610 - Second air inlet; 620 - First insertion structure; 630 - Second insertion structure;

[0067] 700 - First waterproof component;

[0068] 800 - Dustproof net; 810 - Third connecting structure; 820 - Fourth connecting structure; 821 - Body; 822 - Tongue; 830 - Slot;

[0069] 900 - Second waterproof component; 910 - First side panel; 920 - Third side panel;

[0070] 1000 - Non-main heating component; 1010 - Connector; 1020 - Relay; 1030 - Control board; 1040 - Low-pass filter; 1050 - Second capacitor; 1060 - Varistor.

[0071] The realization of the objectives, functional features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0072] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0073] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, components, features, and elements with the same names in different embodiments of this application may have the same meaning or different meanings, the specific meaning of which must be determined by its interpretation in that specific embodiment or further in conjunction with the context of that specific embodiment.

[0074] It should be understood that although the terms first, second, third, etc., may be used herein to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this document, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if," as used herein, may be interpreted as "when," "when," or "in response to determination." Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms "comprising," "including," indicate the presence of a feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or," "and / or," "including at least one of the following," etc., used in this application may be interpreted as inclusive, or mean any one or any combination thereof. For example, "including at least one of the following: A, B, C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Similarly, "A, B, or C" or "A, B, and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Exceptions to this definition only occur when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0075] In related technologies, an inverter includes a chassis and main and non-main heat-generating components located within the chassis. The chassis is equipped with an air inlet and an air outlet. Air enters the chassis through the air inlet, passes through the main and non-main heat-generating components, and then flows out through the first air outlet. However, the air is dispersed after entering the chassis, resulting in some wasted airflow, thus the inverter's heat dissipation effect is relatively poor.

[0076] Furthermore, in the field of energy storage inverters, when users choose products, the market is mostly filled with IP20 and IP65-IP66 protection products. IP20 products are inexpensive, but their low protection means they cannot be used outdoors, and dust accumulation inside significantly reduces product lifespan and failure rate. IP65-IP66 products offer high protection levels but are relatively expensive, and their electronic heat dissipation components often rely on potting compound to achieve sealing, making them unreliable for after-sales repair and prohibiting them from being purchased by families with limited budgets. Based on extensive user visits by our company's research and development team, we have developed an IP54 protection product that meets both outdoor usage requirements and is detachable and maintainable. Compared to IP65-IP66 products, this proposal offers IP54 protection, and its structural cost is also significantly lower.

[0077] To address the technical problem of poor heat dissipation in inverters, this application provides an inverter including a chassis, a heat dissipation component, a main heat-generating component, and a non-main heat-generating component. The chassis has an inner cavity, a first air inlet, and a first air outlet. The heat dissipation component is disposed within the inner cavity, forming a heat dissipation duct. The main heat-generating component is located within the heat dissipation duct, while the non-main heat-generating component is located within the inner cavity but outside the heat dissipation duct. This allows the heat dissipation component to concentrate airflow. Compared to related technologies where both the main and non-main heat-generating components are located within the heat dissipation duct, in this application only the main heat-generating component is located within the heat dissipation duct. Therefore, a larger airflow passes through the main heat-generating component, thereby improving the cooling effect on the main heat-generating component located within the heat dissipation duct.

[0078] See Figures 1 to 4 As shown, this application provides an inverter, which includes a chassis 100, an inner cavity, a first air inlet 110, and a first air outlet 120.

[0079] See Figure 5 and Figure 6 The inverter includes a heat dissipation component. The heat dissipation component is used to accelerate the cooling of the main heat-generating component 400.

[0080] The heat dissipation components are located inside the cavity, forming a heat dissipation airflow channel.

[0081] See Figure 7 and Figure 8 As shown, the inverter includes a non-heat-generating component 1000, which is located inside the cavity and outside the heat dissipation duct. It should be noted that the non-heat-generating component 1000 may include devices that generate no heat at all or devices with very low heat generation.

[0082] Optionally, the non-main heating component 1000 may include at least one of the following: connector 1010, relay 1020, control board 1030, low-pass filter 1040, second capacitor 1050, varistor 1060, etc.

[0083] See Figure 9 As shown, the inverter includes a main heat-generating component 400, which is located within a heat dissipation duct. It should be noted that the main heat-generating component 400 may include devices that generate significant heat.

[0084] The inverter provided in this application includes a chassis 100, a heat dissipation assembly, a main heat-generating assembly 400, and a non-main heat-generating assembly 1000. The chassis 100 has an inner cavity, a first air inlet 110, and a first air outlet 120. The heat dissipation assembly is disposed within the inner cavity, forming a heat dissipation duct. The main heat-generating assembly 400 is located within the heat dissipation duct, while the non-main heat-generating assembly 1000 is located within the inner cavity but outside the heat dissipation duct. This allows the heat dissipation assembly to concentrate airflow. Compared to related technologies where both the main heat-generating assembly 400 and the non-main heat-generating assembly 1000 are located within the heat dissipation duct, in this application only the main heat-generating assembly 400 is located within the heat dissipation duct. Therefore, a larger airflow passes through the main heat-generating assembly 400, thereby improving the cooling effect on the main heat-generating assembly 400 located within the heat dissipation duct.

[0085] See Figure 7 As shown, optionally, the heat dissipation assembly includes an air duct 300, which is configured to form a heat dissipation air duct.

[0086] See Figure 7 As shown, optionally, the heat dissipation assembly includes a fan 500. The fan 500 is used to accelerate airflow.

[0087] Optionally, the fan 500 is located inside the cavity, and the air inlet and / or outlet of the fan 500 can be connected to the heat dissipation duct. Under the action of the fan 500, external air enters the cavity of the chassis 100 through the first air inlet 110, and then flows to the outside of the chassis 100 through the heat dissipation duct and the first air outlet 120, which can cool down the main heat-generating component 400 located in the heat dissipation duct.

[0088] See Figure 7 and Figure 8 As shown, optionally, the air duct component 300 includes a first air duct portion 310, which is configured to enclose the first air inlet 110 so that the first air inlet 110 is not connected to the outside of the heat dissipation air duct. The air duct component 300 includes a second air duct portion 320, one end of which is connected to the first air duct portion 310 along a first direction, the first direction being the extension direction of the second air duct portion 320. The first direction can be the direction shown by the Z-axis. Air within the second air duct portion 320 moves towards the fan 500 along the first direction.

[0089] Specifically, the fan 500 is located at the end of the second air duct section 320 opposite to the first air duct section 310, and the fan 500 drives air to flow from the first air duct section 310 to the second air duct section 320.

[0090] See Figure 9As shown, optionally, the inverter includes a circuit board 200 located within the cavity. The main heating component 400 and the non-main heating component 1000 can both be mounted on the same circuit board 200. Alternatively, the main heating component 400 and the non-main heating component 1000 can be mounted on different circuit boards 200. The air duct component 300, the circuit board 200, and the chassis 100 form a heat dissipation air duct.

[0091] Optionally, the air duct component 300 can be made of PC (Polycarbonate).

[0092] See Figure 9 As shown, optionally, the main heating component 400 includes a transformer 410, which extends along a first direction. It is understood that air flows downwards along the first direction, and the transformer 410 extending along the first direction does not easily obstruct the airflow, thus allowing the air to flow more smoothly to the position of the first air outlet 120.

[0093] See Figure 9 As shown, optionally, the main heating component 400 includes a radiator 420, which extends along a first direction. It is understood that air flows downwards along the first direction, and the radiator 420 extending along the first direction does not easily obstruct airflow, thus allowing air to flow more smoothly to the first air outlet 120.

[0094] See Figure 9 As shown, optionally, the main heating component 400 includes at least two heat sinks 420, which are disposed on opposite sides of the transformer 410 along a second direction, with a gap between the heat sinks 420 and the transformer 410 along the second direction. This allows air to flow within the gap.

[0095] Specifically, the number of radiators 420 can be three. Two radiators 420 are located on one side of the transformer 410 along the second direction, and the two radiators 420 are spaced apart along the first direction. The third radiator 420 is located on the other side of the transformer 410 along the second direction.

[0096] See Figure 9 As shown, the main heating component 400 includes at least two first capacitors 430, which are arranged along a first direction. It is understood that air flows downwards along the first direction, and the arrangement of at least two first capacitors 430 along this direction makes it less likely to obstruct airflow, allowing air to flow more smoothly to the first air outlet 120. Along a second direction, at least two first capacitors 430 are located between at least two heat sinks 420, and there is a gap between the first capacitors 430 and the transformer 410. This allows air to flow within the gap.

[0097] Specifically, there are three first capacitors 430, arranged along a first direction. The second direction is perpendicular to the first direction and parallel to the extension plane of the circuit board 200. This second direction can be the direction indicated by the X-axis. The extension plane of the circuit board 200 is the plane formed by the X-axis and the Y-axis.

[0098] See Figure 10 As shown, optionally, the main heat-generating component 400 includes a photovoltaic-side transistor 440, which can be a MOSFET (metal-oxide-semiconductor field-effect transistor). Along the second direction, the photovoltaic-side transistor 440 is located on the side of the heat sink 420 away from the transformer 410. Specifically, the number of photovoltaic-side transistors 440 can be five. The photovoltaic-side transistors 440 can be located between the heat sink 420 and the circuit board 200.

[0099] See Figure 10 As shown, optionally, the main heat-generating component 400 includes a low-voltage DC-side transistor 450, which is located on the side of the heat sink 420 away from the transformer 410 along the second direction. The low-voltage DC-side transistor 450 can be a MOSFET. Specifically, the number of low-voltage DC-side transistors 450 can be 12. The low-voltage DC-side transistors 450 can be located between the heat sink 420 and the circuit board 200.

[0100] See Figure 11 As shown, in some embodiments, the main heat-generating component 400 includes an inverter-side transistor 460, which is located on the side of the heat sink 420 away from the transformer 410 along the second direction. The inverter-side transistor 460 can be a MOSFET. Specifically, the number of inverter-side transistors 460 can be 12. The inverter-side transistors 460 can be located between the heat sink 420 and the circuit board 200.

[0101] See Figure 5 As shown, optionally, the chassis 100 includes a front cover 130 and a bottom shell 140. The front cover 130 and the bottom shell 140 are connected to each other, and the front cover 130 and the bottom shell 140 enclose an inner cavity.

[0102] See Figure 12 As shown, optionally, a partition plate 150 is also included.

[0103] The partition plate 150 is located in the inner cavity to divide the inner cavity into a first receiving cavity 160 and a second receiving cavity 170. The first receiving cavity 160 is located above the second receiving cavity 170 along the first direction. The first air inlet 110 is connected to the first receiving cavity 160, and the first air outlet 120 is connected to the second receiving cavity 170.

[0104] See Figure 5 and Figure 12 As shown, the circuit board 200 and the air duct component 300 are located in the first receiving cavity 160. The fan 500 is connected to the partition plate 150, the air intake of the fan 500 is connected to the first receiving cavity 160, and the air exhaust of the fan 500 is connected to the second receiving cavity 170. It can be understood that, along the first direction, the fan 500 is located in a relatively central position, making it less likely for the operating noise of the fan 500 to be transmitted to the outside of the chassis 100. Compared to when the fan 500 is closer to the first air outlet 120 or the first air inlet 110, the noise is lower.

[0105] Optionally, the second receiving cavity 170 has a size of 80mm to 100mm along the first direction. This makes it less likely for the operating noise of the fan 500 to be transmitted to the outside of the chassis 100, which helps to reduce noise.

[0106] Optionally, to reduce the noise of the fan 500 during operation, an unobstructed area is provided on the exhaust port side of the fan 500, and an unobstructed area is provided on the intake port side of the fan 500. Specifically, along the Y-axis, the height of the main heating component 400 does not exceed the center of the intake port of the fan 500. Along the Z-axis, the main heating component 400 and the fan 500 are spaced apart, and the distance is greater than 10mm, for example, greater than 15mm or 25mm.

[0107] Along the Y-axis, the height of the electrical components within the second receiving cavity 170 does not exceed the center of the exhaust port of the fan 500. The electrical components within the second receiving cavity 170 are spaced from the fan 500, and the distance is greater than 10 mm, for example, greater than 15 mm or 25 mm.

[0108] Specifically, there can be two fans 500, which are spaced apart along a second direction. The second direction is the direction shown by the X-axis.

[0109] See Figure 5 , Figures 13 to 16 As shown, optionally, the chassis 100 includes a front cover 130 and a bottom shell 140. A first connecting structure 180 is provided on the side of the front cover 130 facing the bottom shell 140, and a second connecting structure 190 is provided on the side of the bottom shell 140 facing the front cover 130. The front cover 130 and the bottom shell 140 are sealed together via the first connecting structure 180 and the second connecting structure 190, thereby reducing the ingress of liquid.

[0110] The first connecting structure 180 includes a first bent edge 181 and a second bent edge 182 that are connected to each other. The first bent edge 181 and the second bent edge 182 are perpendicular to each other, and the second bent edge 182 extends toward the inside of the first bent edge 181.

[0111] The second connecting structure 190 includes a third bent edge 191 and a fourth bent edge 192 that are connected to each other. The fourth bent edge 192 is perpendicular to the third bent edge 191 and extends toward the periphery of the third bent edge 191.

[0112] When the front cover 130 is connected to the bottom shell 140, the second bent edge 182 abuts against the outer wall of the bottom shell 140, the fourth bent edge 192 abuts against the inner wall of the front cover 130, and the third bent edge 191 is opposite to the fourth bent edge 192. It can be understood that the first bent edge 181, the second bent edge 182, the third bent edge 191, and the fourth bent edge 192 cooperate to block the liquid.

[0113] See Figure 16 As shown, liquid, such as rainwater, enters between the second bend 182 and the outer wall of the bottom shell 140, and then drips onto the third bend 191. A relatively large amount of rainwater needs to accumulate before it can enter the inner cavity from between the fourth bend 192 and the front cover 130. Therefore, through the cooperation of the first bend 181, the second bend 182, the third bend 191 and the fourth bend 192, liquid does not easily enter the inner cavity.

[0114] Optionally, the front cover 130 includes two parts: a first part for closing the first receiving cavity 160 and a second part for closing the second receiving cavity 170.

[0115] See Figure 14 and Figure 15 As shown, optionally, the first direction is the height direction, and the first air outlet 120 is located at the bottom of the chassis 100, making it difficult for liquids and dust to enter the interior of the chassis 100 through the first air outlet 120. The first air inlet 110 is located at the back of the chassis 100. This makes the first air inlet 110 less noticeable to the user, improving the overall aesthetics. Moreover, compared to left and right side air inlets, it can, to some extent, prevent the equipment from sucking in dust and impurities during long-term operation. When inverter-type products need to be paralleled during operation, the equipment is mostly installed side by side on the wall. Left and right air inlets would cause the heat blown out by the first unit to be sucked into the second unit. The rear air inlet of this solution effectively avoids this problem.

[0116] See Figure 17 As shown, optionally, it also includes an upper mounting bracket 600. The upper mounting bracket 600 is used to install the inverter, and the upper mounting bracket 600 can also serve a waterproof function.

[0117] The upper bracket 600 is located at the rear of the chassis 100 and at its upper part. The upper bracket 600 has a second air inlet 610, which communicates with the first air inlet 110. The upper bracket 600 is used to connect to a component to be connected, such as a wall, so that there is a gap between the second air inlet 610 and the first air inlet 110 and the component to be connected. This allows air to smoothly enter the internal cavity through the second air inlet 610 and the first air inlet 110.

[0118] Specifically, the upper bracket 600 and the back of the chassis 100 enclose a fourth receiving cavity. The upper bracket 600 and the chassis 100 can be connected by fasteners such as screws or bolts. Along a third direction, the second air inlet 610 is spaced from the first air inlet 110. The second air inlet 610 is located on the side of the upper bracket 600 facing the chassis 100, with the first end being the end of the upper bracket 600 facing away from the chassis 100. That is, when the first end of the upper bracket 600 is against the wall, the back of the chassis 100 can have a gap with the wall, and the second air inlet 610 can also have a gap with the wall, allowing air to enter the second air inlet 610 through this gap. The third direction is perpendicular to the extension plane of the circuit board 200. The third direction can be the direction indicated by the Y-axis.

[0119] The extended plane of the second air inlet 610 forms an angle with the extended plane of the first air inlet 110, and the second air inlet 610 is located below the first air inlet 110. This results in a larger space between the second air inlet 610 and the wall, facilitating air entry into the second air inlet 610 through this space. Specifically, along a third direction, from the side furthest from the chassis 100 to the side closest to the chassis 100, the second air inlet 610 slopes downwards, thereby reducing the entry of rainwater.

[0120] Optionally, a portion of the first air inlet 110 is located within the orthographic projection of the upper bracket 600 toward the rear of the chassis 100. In this way, the upper bracket 600 can shield the first air inlet 110 from rain.

[0121] See Figure 13 and 14 As shown, the inverter may optionally include a first waterproof element 700. The first waterproof element 700 is used to block rainwater.

[0122] The first waterproof component 700 is disposed around the top of the first air inlet 110 and on opposite sides of the first air inlet 110 along the second direction. The first waterproof component 700 is integrally formed with the chassis 100, and the first waterproof component 700 and the chassis 100 can be fully welded together. It is understood that by providing the first waterproof component 700 to protect the first air inlet 110, it helps to prevent liquid from entering the inner cavity of the chassis 100. The second direction is the direction shown by the X-axis.

[0123] Along a third direction, from the side closer to the chassis 100 to the side farther away from the chassis 100, the height of the top wall of the first waterproof component 700 decreases. Here, the third direction is the direction indicated by the Y-axis. This makes it less likely for liquid to accumulate on the top wall of the first waterproof component 700.

[0124] See Figure 17 and Figure 18 As shown, optionally, a dust filter 800 is also included, which is configured to block the second air inlet. The dust filter 800 can effectively prevent dust from entering the interior of the chassis 100 through the second air inlet 610 and the first air inlet 110.

[0125] The dustproof net 800 is detachably connected to the upper bracket, which facilitates the installation and removal of the dustproof net 800.

[0126] The upper bracket 600 is equipped with a first insertion structure 620 and a second insertion structure 630, located above and below the second air inlet 610, respectively. The first and second insertion structures 620 and 630 extend in the same direction. A dustproof net 800 is inserted into the first and second insertion structures 620 and 630 to block the second air inlet 610. Specifically, the dustproof net 800 can be inserted along one side of the extending direction of the first and second insertion structures 620 and 630. The extending direction of the first and second insertion structures 620 and 630 is the direction indicated by the X-axis.

[0127] The dustproof net 800 has a third connecting structure 810 at one end along its extension direction, which is detachably connected to the upper bracket 600. A fourth connecting structure 820 is located at the other end along the extension direction of the dustproof net 800, and is detachably connected to both the upper bracket 600 and the dustproof net 800 to limit the position of the dustproof net 800 along its extension direction. This effectively prevents the dustproof net 800 from swaying along its extension direction.

[0128] Specifically, the third connecting structure 810 can be integrated with the dustproof net 800, and the third connecting structure 810 and the upper bracket 600 are detachably connected by screws. The third connecting structure 810 is provided with an elongated hole, and the upper bracket 600 is provided with a threaded hole, so as to facilitate the position adjustment of the dustproof net 800 along the direction shown by the Z-axis.

[0129] The fourth connecting structure 820 is connected to the upper bracket 600 by screws. The fourth connecting structure 820 includes a body 821 and a latch 822. The dustproof net 800 is provided with a slot 830, which is through-hole. The latch 822 is inserted into the slot 830 to limit the shaking of the dustproof net 800 along the extension direction. The body 821 is provided with an elongated hole, and the upper bracket 600 is provided with a threaded hole, so as to facilitate the position adjustment of the dustproof net 800 along the Z-axis.

[0130] The dustproof net 800 abuts against the fourth connecting structure 820, the first insertion structure 620, and the second insertion structure 630 to restrict the position of the dustproof net 800 along the fourth direction. The fourth direction is perpendicular to the plane extending from the dustproof net 800. This effectively prevents the dustproof net 800 from swaying along its extension direction.

[0131] Understandably, the fourth connecting structure 820 is detachably connected to both the upper bracket 600 and the dustproof net 800, and the third connecting structure 810 is detachably connected to the upper bracket 600. This facilitates the removal of the dustproof net 800, makes maintenance convenient, and increases the product's service life.

[0132] See Figures 19 to 24 As shown, optionally, the first direction is the height direction, and the first air outlet 120 is located at the bottom of the chassis 100, so that liquid and dust are not easily allowed to enter the interior of the chassis 100 through the first air outlet 120. The first air inlet 110 is located on the side wall of the chassis 100. In this way, when the back of the chassis 100 is flush with the wall, it will not easily affect the air intake of the chassis 100.

[0133] Optionally, the side wall of the chassis 100 is provided with a second air outlet 1100, which is located below the first air outlet 120 and is connected to the second receiving cavity 170.

[0134] See Figure 25 and Figure 26As shown, optionally, a second waterproof component 900 is also included. The second waterproof component 900 is located in the inner cavity and forms a third receiving cavity with the side wall of the chassis 100. The third receiving cavity is connected to the first air inlet 110. A third air inlet is provided on the top of the second waterproof component 900, which is connected to both the third receiving cavity and the heat dissipation duct. That is, the second waterproof component 900 surrounds the first air inlet 110, and its top is connected to the inner cavity, while the other parts are not connected. Air enters the second waterproof component 900 through the first air inlet 110 and then enters the inner cavity through the top opening of the second waterproof component 900. In this way, liquids such as rainwater entering the first air inlet 110 are blocked by the second waterproof component 900, making it less likely to enter and affect the internal circuit board 200 and power devices. The top of the second waterproof component 900 is higher than the top of the inner wall of the first air inlet 110. This helps to improve the waterproof effect. The second waterproof component 900 is fully welded to the chassis 100.

[0135] Specifically, the first air inlet 110 is located on opposite sides of the chassis 100 along the second direction. There are two second waterproof components 900, located within the inner cavity and connected to the two side walls of the chassis 100 respectively. The circuit board 200 and the air duct component 300 are located between the two second waterproof components 900. Each second waterproof component 900 includes a first side plate 910, a second side plate, and a third side plate 920 connected to each other. The first side plate 910 is opposite to the side wall of the chassis 100, with a gap between them, and is connected to the rear wall of the chassis 100. The second side plate is located between the first side plate 910 and the side wall of the chassis 100, and is connected to the side wall of the chassis 100. The third side plate 920 is located between the first side plate 910 and the side wall of the chassis 100, and is connected to the side wall of the chassis 100. The third side panel 920 is located at the bottom of the first side panel 910 and the second side panel, and the top height of the first side panel 910 and the top height of the second side panel are higher than the top height of the first air inlet 110. This helps to improve the waterproof effect.

[0136] Optionally, the outer cover of the first air inlet 110 is equipped with a dustproof net 800.

[0137] It should be noted that the other structures in the second structure of the inverter provided in this embodiment can be the same as the first structure and achieve the same technical effect, which will not be elaborated here.

[0138] Second Embodiment

[0139] This application provides an electrical device, including the inverter described in the above embodiment. For example, the electrical device may be a photovoltaic power generation device or a wind power generation device, etc.

[0140] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0141] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An inverter, characterized in that, include: The chassis has an inner cavity, and the chassis has a first air inlet and a first air outlet; A heat dissipation component is disposed in the inner cavity, and the heat dissipation component forms a heat dissipation air duct, which is connected to the first air inlet and the first air outlet respectively. The main heat-generating component is located within the heat dissipation duct; The non-primary heat-generating component is located in the inner cavity and outside the heat dissipation duct.

2. The inverter according to claim 1, characterized in that, The heat dissipation components include: A duct component is located in the inner cavity, and the duct component is configured to form a heat dissipation duct. A fan is located in the inner cavity and is configured to drive air through a first air inlet, the inlet of the heat dissipation duct, the outlet of the heat dissipation duct, and a first air outlet to the outside of the chassis.

3. The inverter according to claim 2, characterized in that, The air duct component includes: A first air duct section is configured to enclose the first air inlet so that the first air inlet is not connected to the outside of the heat dissipation air duct. The second air duct section is connected to the first air duct section at one end along the first direction, where the first direction is the extension direction of the second air duct section.

4. The inverter according to claim 3, characterized in that, The main heating component includes at least one of the following: A transformer, wherein the transformer extends along the first direction; A radiator, wherein the radiator extends along the first direction; At least two first capacitors are arranged along the first direction.

5. The inverter according to any one of claims 2 to 4, characterized in that, The inner cavity includes a first receiving cavity and a second receiving cavity, the first air inlet is connected to the first receiving cavity, and the first air outlet is connected to the second receiving cavity; The air duct component and the fan are located in the first receiving cavity, the air intake of the fan is connected to the heat dissipation air duct, and the air exhaust of the fan is connected to the second receiving cavity.

6. The inverter according to any one of claims 1 to 4, characterized in that, It also includes an upper mounting bracket, which is located at the back of the chassis and has a second air inlet connected to the first air inlet. The upper bracket is used to connect to the component to be connected, so that the second air inlet and the first air inlet are spaced apart from the component to be connected.

7. The inverter according to claim 6, characterized in that, It also includes a dustproof net, which is detachably connected to the upper bracket and is configured to block the second air inlet.

8. The inverter according to any one of claims 1 to 4, characterized in that, The first air outlet is located at the bottom of the chassis, and the first air inlet is located on the side wall of the chassis; Alternatively, the first air outlet is located at the bottom of the chassis, and the first air inlet is located at the back of the chassis.

9. The inverter according to claim 8, characterized in that, It also includes at least one of the following: The first waterproof component is disposed around the top of the first air inlet and on opposite sides of the first air inlet along the second direction; The second waterproof component is located in the inner cavity. The second waterproof component and the side wall of the chassis form a third receiving cavity. The third receiving cavity is connected to the first air inlet. The top of the second waterproof component is provided with a third air inlet. The third air inlet is connected to the third receiving cavity and the heat dissipation duct.

10. An electrical device, characterized in that, Inverter including any one of claims 1 to 9.

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