An off-grid inverter cabinet

Abstract

The utility model belongs to inverter technical field discloses a kind of off-grid inverter machine case, including bottom shell, the bottom shell includes bottom plate and side plate, the bottom plate top is provided the side plate, and forms accommodating space, the bottom plate right side is equipped with upper and lower through air inlet slot, the bottom plate left side is equipped with upper and lower through air outlet slot, the air inlet slot top is equipped with air inlet cover, the air outlet slot top is equipped with air outlet cover, the bottom plate top surface is equipped with ventilation cover, the ventilation cover is connected with the air inlet cover and the air outlet cover, the air inlet slot bottom is equipped with air inlet chassis, the air inlet chassis is equipped with air inlet, the air outlet slot bottom is equipped with air outlet chassis, and the air outlet chassis is equipped with air outlet.The utility model has the beneficial effects of: reducing the weight and volume of the whole machine by reducing the large radiator of traditional mode.

Description

Technical Field

[0001] This utility model relates to the field of inverter technology, and in particular to an off-grid inverter chassis. Background Technology

[0002] In the photovoltaic and energy storage industry, IP65 power supplies typically feature an inductor slot independently mounted at the bottom of the chassis, with heat dissipation achieved through potting compound. The MOSFETs are cooled by attaching to a bottom heatsink. There is no internal airflow; cooling relies solely on external heatsinks and the inductor slots. Figure 6 Its disadvantages are: 1. The inductor slot requires a separate heatsink fixed at the bottom of the chassis, increasing the overall height of the unit; 2. The MOSFET heatsink is fixed at the bottom of the chassis, increasing the overall size of the unit; 3. The MOSFET requires a separate heatsink for heat dissipation, increasing the cost; 4. The MOSFET heatsink requires one or more axial fans for airflow cooling, increasing the cost and the noise of the unit.

[0003] Therefore, it is necessary to provide an off-grid inverter chassis that reduces the need for large heat sinks as in traditional methods, thereby reducing the weight and size of the entire unit. Utility Model Content

[0004] This utility model discloses an off-grid inverter chassis, which relates to the photovoltaic and energy storage power industry and can effectively solve the technical problems involved in the background art.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] An off-grid inverter chassis includes a bottom shell, which includes a bottom plate and side plates. The side plates are disposed on the top of the bottom plate and form an accommodating space. The bottom plate has a vertically penetrating air inlet slot on the right side and a vertically penetrating air outlet slot on the left side. An air inlet hood is disposed on the top of the air inlet slot and an air outlet hood is disposed on the top of the air outlet slot. A ventilation hood is disposed on the top surface of the bottom plate, and the ventilation hood connects the air inlet hood and the air outlet hood. An air inlet base frame is disposed at the bottom of the air inlet slot, and the air inlet base frame has an air inlet. An air outlet base frame is disposed at the bottom of the air outlet slot, and the air outlet base frame has an air outlet.

[0007] A novel IP65 airflow layout for an off-grid inverter is disclosed, with both the intake and exhaust airflow ducts located at the bottom of the chassis. The airflow ducts are formed using U-shaped extruded profiles and waterproofed with adhesive. The inductors are located inside the airflow ducts formed by the extruded profiles and are also waterproofed with adhesive. The MOSFETs are fixed to both sides of the outer end of the extruded profiles.

[0008] As a preferred improvement of this utility model: the side plate includes a left side plate, a front side plate, a right side plate and a rear side plate connected in sequence.

[0009] As a preferred improvement of this utility model: the inverter chassis further includes a top cover, which is installed on the top surface of the side plate and forms a closed receiving space.

[0010] As a preferred improvement of this utility model, the air inlet and the air outlet are located on the right side.

[0011] As a preferred improvement of this utility model: a transformer is installed inside the ventilation hood, and the transformer is waterproofed by being filled with adhesive.

[0012] As a preferred improvement of this utility model, a MOS tube is provided on the outer wall of the ventilation hood.

[0013] As a preferred improvement of this utility model, a centrifugal fan is provided inside the air outlet cover.

[0014] As a preferred improvement of this utility model, both the air inlet and the air outlet are provided with mesh covers.

[0015] As a preferred improvement of this utility model, sealant is provided between the air inlet cover, the air outlet cover, the ventilation cover and the base plate.

[0016] As a preferred improvement of this utility model: a PCB board is provided on the top surface of the base plate, and the ventilation hood is mounted on the PCB board.

[0017] The beneficial effects of this utility model are as follows:

[0018] The inductor slot (i.e., ventilation cover) is fixed on top of the PCB and placed inside the chassis, reducing the overall height of the power supply and meeting the requirements of small size, aesthetics, light weight, and low price. The inductor slot (extruded profile) is placed inside the chassis, and the heat sink forms an airflow channel for the inductor and transformer, and also dissipates heat from the MOSFET, reducing the overall cost of the power supply. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0020] Figure 1 This is a schematic diagram of an off-grid inverter chassis according to the present invention;

[0021] Figure 2 This is a schematic diagram of the top surface of the present invention;

[0022] Figure 3 This is a schematic diagram of the bottom surface of the present invention;

[0023] Figure 4 This is a side view of the present invention;

[0024] Figure 5 This is a cross-sectional schematic diagram of the present invention;

[0025] Figure 6 This is a schematic diagram of existing technology.

[0026] In the diagram: 100-bottom shell, 110-bottom plate, 111-air inlet slot, 112-air outlet slot, 120-side plate, 2-air inlet cover, 3-air outlet cover, 4-ventilation cover, 5-air inlet base frame, 51-air inlet, 6-air outlet base frame, 61-air outlet, 7-transformer, 8-centrifugal fan. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0029] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0032] Please see Figure 1 As shown, this utility model provides an off-grid inverter chassis, including a bottom shell 100. The bottom shell 100 includes a bottom plate 110 and a side plate 120. The side plate 120 is disposed on the top of the bottom plate 110, forming an accommodating space. The side plate 120 includes a left side plate, a front side plate, a right side plate, and a rear side plate connected in sequence. The inverter chassis also includes a top cover, which is installed on the top surface of the side plate 120 and forms a closed accommodating space. It can be installed by clips or screws. The bottom plate 110 has a vertically penetrating air inlet slot 111 on the right side and a vertically penetrating air outlet slot 112 on the left side. The air inlet slot 111 has an air inlet cover 2 on the top, and the air outlet slot 112 has an air outlet cover 3 on the top. A centrifugal fan 8 is disposed inside the air outlet cover 3. The top surface of the base plate 110 is provided with a ventilation hood 4, which connects the air inlet hood 2 and the air outlet hood 3. A transformer 7 is installed inside the ventilation hood 4, and the transformer 7 is potted with waterproof sealant. A MOS transistor is installed on the outer wall of the ventilation hood 4. An air inlet base frame 5 is provided at the bottom of the air inlet slot 111, and the air inlet base frame 5 has an air inlet 51. An air outlet base frame 6 is provided at the bottom of the air outlet slot 112, and the air outlet base frame 6 has an air outlet 61. The air inlet hood 51 and the air outlet 61 are located on the right side, and both the air inlet hood 51 and the air outlet 61 are equipped with mesh covers. Sealant is applied between the air inlet hood 2, the air outlet hood 3, and the ventilation hood 4 and the base plate 110. In this embodiment, a PCB board is provided on the top surface of the base plate 110, and the ventilation hood 4 is mounted on the PCB board. The air inlet base frame 5 and the air outlet base frame 6 provide air circulation and also support the base shell.

[0033] Specifically, this design introduces airflow from the bottom (right side) of the rear of the chassis, forming an air duct through extruded profiles, and exhausts air from the top (left side) of the rear of the chassis. Inductors and transformers (at the air duct) are potted with adhesive for heat dissipation and sealing, ensuring the entire unit meets IP65 requirements. MOSFETs are cooled by a central air duct heatsink using a centrifugal fan, characterized by low noise and high airflow, thus achieving effective heat dissipation. This design reduces the need for large heatsinks, effectively reducing the overall weight of the unit. The transformer + potting compound approach reduces the cost of inductors. The absence of a heatsink on the rear further reduces the overall size. This design breaks away from traditional IP65 designs, featuring a simple structure, excellent waterproof sealing, and superior heat dissipation.

[0034] Working principle: A PCB board is set on the base plate, and various electrical components are installed on the PCB board. Inductors, transformers and other components are located inside the ventilation hood and are treated with potting compound for waterproofing. MOSFETs are located on the outer wall of the ventilation hood. When in use, the centrifugal fan is turned on, and the gas circulates in the ventilation hood to cool the inductors and transformers. At the same time, the temperature of the ventilation hood wall panel decreases, and the MOSFETs that are in close contact with the outer wall also achieve a cooling effect.

[0035] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. An off-grid inverter chassis, characterized in that: Includes a bottom shell (100), the bottom shell (100) includes a bottom plate (110) and a side plate (120), the side plate (120) is provided on the top of the bottom plate (110) and forms an accommodating space, the bottom plate (110) has a vertically penetrating air inlet slot (111) on the right side, and a vertically penetrating air outlet slot (112) on the left side, the air inlet slot (111) is provided with an air inlet cover (2) on the top of the air inlet slot (111), the air outlet slot (112) is provided with an air outlet cover (2) on the left side. The top of the slot (112) is provided with an air outlet cover (3), the top surface of the bottom plate (110) is provided with a ventilation cover (4), the ventilation cover (4) connects the air inlet cover (2) and the air outlet cover (3), the bottom of the air inlet slot (111) is provided with an air inlet base frame (5), the air inlet base frame (5) is provided with an air inlet (51), the bottom of the air outlet slot (112) is provided with an air outlet base frame (6), the air outlet base frame (6) is provided with an air outlet (61).

2. The off-grid inverter chassis according to claim 1, characterized in that: The side panel (120) includes a left side panel, a front side panel, a right side panel and a rear side panel connected in sequence.

3. The off-grid inverter chassis according to claim 1, characterized in that: The inverter chassis also includes a top cover, which is installed on the top surface of the side panel (120) and forms a closed receiving space.

4. The off-grid inverter chassis according to claim 1, characterized in that: The air inlet (51) and the air outlet (61) are located on the right side.

5. The off-grid inverter chassis according to claim 1, characterized in that: A transformer (7) is installed inside the ventilation hood (4), and the transformer (7) is waterproofed by being filled with glue.

6. The off-grid inverter chassis according to claim 1, characterized in that: The outer wall of the ventilation hood (4) is provided with a MOS tube.

7. The off-grid inverter chassis according to claim 1, characterized in that: A centrifugal fan (8) is installed inside the air outlet cover (3).

8. The off-grid inverter chassis according to claim 1, characterized in that: Both the air inlet (51) and the air outlet (61) are equipped with mesh covers.

9. The off-grid inverter chassis according to claim 1, characterized in that: Sealant is provided between the air inlet hood (2), the air outlet hood (3), and the ventilation hood (4) and the base plate (110).

10. An off-grid inverter chassis according to claim 1, characterized in that: The bottom plate (110) has a PCB board on its top surface, and the ventilation hood (4) is installed on the PCB board.

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