Inverter and protective cover for inverter

Abstract

The utility model discloses an inverter and a protective cover of the inverter. The protective cover is used for the inverter and comprises a cover body and a magnetic ring. The cover body is provided with a cavity and a wire passing hole, and the wire passing hole is located in the side wall of the cavity and communicated with the cavity. The magnetic ring is fixedly arranged in the cavity, and an internal through hole of the magnetic ring and the wire passing hole are coaxially arranged. According to the inverter and the protective cover of the inverter, the EMC of the inverter can be further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic inverter devices, in particular to an inverter and a protective cover of the inverter. Background Art

[0002] An inverter is a power regulation device composed of semiconductor devices, mainly used to convert DC power into AC power. It is generally composed of a boost circuit and an inverter bridge circuit. The boost circuit boosts the DC voltage of the solar cell to the DC voltage required for the inverter output control; the inverter bridge circuit converts the boosted DC voltage into an AC voltage of a common frequency.

[0003] At present, EMC (Electromagnetic Compatibility) is an important factor affecting the stability of the inverter. In order to improve the EMC of the inverter, a magnetic ring is usually added inside the inverter in the prior art. However, after the magnetic ring is added inside the inverter in the prior art, the improvement effect of EMC may still be relatively poor. Utility Model Content

[0004] The main purpose of the utility model is to provide an inverter and a protective cover of the inverter, which can further improve the EMC performance of the inverter.

[0005] According to one aspect of the utility model, a protective cover is provided, the protective cover is used for an inverter, and the protective cover comprises:

[0006] A cover body, wherein the cover body is provided with a cavity and a wire-passing hole, wherein the wire-passing hole is located on a side wall of the cavity and communicates with the cavity;

[0007] A magnetic ring is fixedly disposed in the cavity, and an inner through hole of the magnetic ring is coaxially disposed with the wire hole.

[0008] Furthermore, a positioning structure is provided in the cover body, and the magnetic ring is fixed on the inner wall of the cavity through the positioning structure.

[0009] Furthermore, the positioning structure includes a first annular convex rib and a second annular convex rib, the first annular convex rib and the second annular convex rib are spaced apart and protrude on the inner wall of the wire hole and surround to form a positioning ring, and the magnetic ring is installed in the positioning ring.

[0010] Furthermore, an opening is provided on the cover body, and the opening is located on a side of the cavity away from the wire hole, the first annular rib is closer to the opening than the second annular rib, and the first annular rib is inclined in a direction close to and away from the opening.

[0011] Furthermore, at least one notch is provided on the circumference of the first annular rib.

[0012] Furthermore, an annular outer flange is provided on the cover body, the annular outer flange is arranged around the outer periphery of the opening, and a connecting hole is provided on the annular outer flange.

[0013] Furthermore, an annular groove is provided on the annular outer flange, and the annular groove extends along the circumference of the annular outer flange.

[0014] Furthermore, the protective cover also includes:

[0015] A waterproof plug is detachably connected to the wire hole.

[0016] Furthermore, there are at least one of the wire passing hole and the magnetic ring. When there are multiple wire passing holes and multiple magnetic rings, the multiple wire passing holes and the multiple magnetic rings are arranged in a one-to-one correspondence.

[0017] On the other hand, the present application also provides an inverter, including a main body and a protective cover, the main body is provided with an AC connection port, the protective cover includes the above-mentioned protective cover, the protective cover is provided at the AC connection port to cover the AC connection port, a sealing strip is provided in the annular groove of the protective cover, and the sealing strip is at least used to seal the gap between the protective cover and the main body.

[0018] In the present invention, when the inverter is actually assembled, the protective cover is placed on the AC connection port of the inverter. At this time, the wire at the AC connection port can pass through the protective cover from the wire hole. Since a magnetic ring is provided in the cover body of the present invention, and the axis of the magnetic ring is coaxial with the axis of the wire hole, when connected, the wire can pass through the magnetic ring and the wire hole and pass through the protective cover. Compared with the prior art, the present invention fixes the magnetic ring on the protective cover. When the inverter is actually assembled, there is no need to wind the wire inside the magnetic ring, but only to pass through the magnetic ring when the wire passes through the protective cover. The operation is simple and the installation is convenient.

[0019] In other words, the utility model improves the protective cover of the AC end and sets the magnetic ring inside the protective cover, which can save the step of winding the magnetic ring inside the inverter during the inverter assembly process and effectively improve the EMC performance of the inverter. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0021] Figure 1 A three-dimensional structural diagram of a protective cover disclosed in an embodiment of the utility model;

[0022] Figure 2 This is a three-dimensional structural diagram of the protective cover disclosed in the embodiment of the utility model after a part is cut away;

[0023] Figure 3 This is an exploded view of the protective cover disclosed in the embodiment of the utility model after a part is cut away;

[0024] Figure 4 It is a side view of the protective cover disclosed in the embodiment of the utility model.

[0025] The above drawings include the following reference numerals:

[0026] 10. Cover body; 11. Cavity; 12. Wire hole; 13. Positioning structure; 131. First annular rib; 1311. Notch; 132. Second annular rib; 133. Positioning ring; 14. Annular outer flange; 141. Annular groove; 142. Connecting hole; 15. Opening; 20. Magnetic ring; 30. Sealing strip; 40. Waterproof plug. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0029] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0030] As described in the background technology, in order to improve the EMC of the inverter, a magnetic ring is usually added inside the inverter in the prior art. However, after the magnetic ring is added inside the inverter in the prior art, the EMC improvement effect is still relatively poor. To this end, the present application provides an inverter and a protective cover of the inverter. The protective cover of the present application will be described in detail below in conjunction with the accompanying drawings.

[0031] See also Figures 1 to 4 As shown, according to an embodiment of the present application, a protective cover is provided. The protective cover is used for an inverter, and specifically, the protective cover can be arranged at the AC connection port of the inverter.

[0032] The protective cover in this embodiment includes a cover body 10 and a magnetic ring 20. The cover body 10 is provided with a cavity 11 and a wire hole 12, and the wire hole 12 is located on the side wall of the cavity 11 and communicates with the cavity 11; the magnetic ring 20 is fixedly arranged in the cavity 11, and the internal through hole of the magnetic ring 20 is coaxially arranged with the wire hole 12. It can be understood that the "on" in the cover body 10 described in this embodiment does not mean up and down, but means that the cover body 10 has a cavity 11 and a wire hole 12. Specifically, the cavity 11 is arranged inside the cover body 10, and the wire hole 12 is arranged on the side wall of the cavity 11.

[0033] When the inverter is actually assembled, the protective cover is set on the AC connection port of the inverter. At this time, the wire at the AC connection port can pass through the protective cover from the wire hole 12. Since the cover body 10 in this embodiment is provided with a magnetic ring 20, and the axis of the magnetic ring 20 is coaxial with the axis of the wire hole 12, when connected, the wire can pass through the magnetic ring 20 and the wire hole 12 and pass through the protective cover. Compared with the prior art, in this embodiment, by fixing the magnetic ring 20 on the protective cover, when the inverter is actually assembled, there is no need to wind the wire inside the magnetic ring 20, but only need to pass through the magnetic ring 20 when the wire passes through the protective cover.

[0034] In other words, this embodiment improves the protective cover of the AC end and sets the magnetic ring 20 inside the protective cover, which not only saves the step of winding the magnetic ring 20 inside the inverter during the inverter assembly process, but also effectively improves the EMC performance of the inverter.

[0035] Furthermore, the protective cover in this embodiment is generally arranged in a columnar structure, and the columnar structure can be a prism, a cylinder, or other regular or irregular columnar structures, which is not specifically limited in this application.

[0036] Optionally, a positioning structure 13 is provided in the cover body 10 in this embodiment, and the magnetic ring 20 is fixed on the inner wall of the cavity 11 through the positioning structure 13. Exemplarily, the positioning structure 13 in this embodiment includes a first annular convex rib 131 and a second annular convex rib 132, and the first annular convex rib 131 and the second annular convex rib 132 are convexly arranged on the inner wall of the wire hole 12 at intervals and surrounded to form a positioning ring 133, and the magnetic ring 20 is installed in the positioning ring 133. In this embodiment, by installing the magnetic ring 20 in the positioning ring 133, the structure is simple and easy to implement. In actual processing, it is only necessary to form the first annular convex rib 131 and the second annular convex rib 132 on the inner wall surface of the wire hole 12 at intervals. When assembling, the magnetic ring 20 can be pressed between the first annular convex rib 131 and the second annular convex rib 132. Optionally, the first annular rib 131 and the second annular rib 132 in this embodiment can be integrally formed with the cover body 10, or can be separately provided from the cover body 10 and then welded into one. As long as it is other deformation methods based on the concept of this application, it is within the protection scope of this application.

[0037] Of course, in other embodiments of the present application, the positioning structure 13 can also be a positioning buckle, a positioning slot or other structures. As long as it is other deformation methods based on the concept of the present application, it is within the protection scope of the present application.

[0038] Furthermore, the cover body 10 in this embodiment is provided with an opening 15, which is located on the side of the cavity 11 away from the wire hole 12, the first annular convex rib 131 is closer to the opening 15 than the second annular convex rib 132, and the first annular convex rib 131 is inclined toward the direction away from the opening 15. With such a configuration, when the magnetic ring 20 is installed, the magnetic ring 20 can be placed into the cavity 11 from the side of the opening 15, and the magnetic ring 20 can be pressed into the positioning ring 133 from the side of the first annular convex rib 131. At this time, the first annular convex rib 131 and the second annular convex rib 132 can limit the magnetic ring 20 from both sides of the magnetic ring 20, and the structure is simple and easy to implement.

[0039] At the same time, since the first annular rib 131 in this embodiment is inclined in the direction away from the opening 15, it can play a certain guiding role on the magnetic ring 20 when pressing the magnetic ring 20, making it easier to install the magnetic ring 20 in the positioning ring 133, and the operation is simple and the installation is convenient.

[0040] Furthermore, at least one notch 1311 is provided on the circumference of the first annular rib 131 in this embodiment. Exemplarily, the notch 1311 may be one, two, three or more than three, and the drawings of this application show the case where there are three notches 1311. In this embodiment, at least one notch 1311 is provided on the circumference of the first annular rib 131, so that when the magnetic ring 20 is pressed in, the first annular rib 131 can be deformed at the notch 1311, making it easier to press the magnetic ring 20 into the positioning ring 133.

[0041] Of course, in other embodiments of the present application, the first annular rib 131 may also be a continuous annular structure, that is, a structure without a notch 1311. As long as it is other deformation methods based on the concept of the present application, it is within the protection scope of the present application.

[0042] Similarly, the second annular rib 132 in this embodiment can be a continuous annular rib or a discontinuous annular rib. As long as it can cooperate with the first annular rib 131 to form a positioning ring 133 to position the magnetic ring 20, other deformation methods are within the protection scope of this application.

[0043] See again Figures 1 to 4 As shown, the cover body 10 in this embodiment is provided with an annular outer flange 14, which is arranged around the outer periphery of the opening 15, and a connecting hole 142 is provided on the annular outer flange 14. During actual installation, the cover body 10 can be fixedly mounted on the inverter by means of structures such as screws and pins that penetrate through the connecting holes 142. Of course, in other embodiments of the present application, the cover body 10 can also be fixed to the inverter by means of structures such as snaps, and any other deformation methods under the conception of the present application are within the protection scope of the present application.

[0044] Furthermore, an annular groove 141 is provided on the annular outer flange 14 in this embodiment, and the annular groove 141 extends along the circumference of the annular outer flange 14, and a sealing strip 30 is provided in the annular groove 141. Through the function of the sealing strip 30, the gap between the cover body 10 and the inverter and other structures can be sealed to prevent external water and the like from entering the inverter.

[0045] Furthermore, the protective cover in this embodiment also includes a waterproof plug 40, which is detachably connected to the wire hole 12. Through the function of the waterproof plug 40, external water and the like can be prevented from entering the interior of the inverter.

[0046] Furthermore, in this embodiment, there is at least one wire hole 12 and one magnetic ring 20, for example, there can be one, two or three wire holes, which can be specifically designed according to actual wiring requirements, and are not specifically limited in this application. The drawings of this application show the situation when there are two wire holes 12 and two magnetic rings 20. When there are multiple wire holes 12 and multiple magnetic rings 20, multiple wire holes 12 and multiple magnetic rings 20 are arranged in one-to-one correspondence, which is convenient for multiple wires to pass through and improve the EMC of the inverter.

[0047] According to the above embodiments, it can be known that:

[0048] In this embodiment, the protective cover of the inverter is improved, especially the protective cover of the AC connection port is improved, and the magnetic ring 20 is fixedly arranged inside the protective cover. In this way, when the inverter is actually assembled, the protective cover is set at the AC connection port of the inverter. At this time, the wire at the AC connection port can pass through the protective cover from the wire hole 12. Since the magnetic ring 20 is arranged inside the cover body 10, and the axis of the magnetic ring 20 is coaxial with the axis of the wire hole 12, when connected, the wire can pass through the magnetic ring 20 and the wire hole 12 and pass through the protective cover. Compared with the prior art, in this embodiment, by fixing the magnetic ring 20 on the protective cover, when the inverter is actually assembled, there is no need to wind the wire inside the magnetic ring 20, but only need to pass through the magnetic ring 20 when the wire passes through the protective cover, which can save the step of winding the wire on the magnetic ring 20 inside the inverter during the inverter assembly process, and can effectively improve the EMC performance of the inverter and improve the production efficiency of the inverter.

[0049] On the other hand, the present application also provides an inverter, which includes the protective cover in the above embodiment. Therefore, the inverter includes all technical effects of the protective cover in the above embodiment.

[0050] The inverter in this embodiment includes an AC connection port on a main body (not shown in the figure), a protective cover is provided at the AC connection port to cover the AC connection port, and the sealing strip 30 mentioned above is provided in the annular groove 141 of the protective cover, and the sealing strip 30 is at least used to seal the gap between the protective cover and the main body.

[0051] When the inverter is actually assembled, the protective cover is placed on the AC connection port of the inverter. At this time, the wire at the AC connection port can pass through the protective cover from the wire hole 12. After installation, a sealing strip 30 is provided on the open side 15 of the protective cover, and a waterproof plug 40 is provided at the wire hole 12, which can effectively seal the AC connection port and prevent external water from entering the inner wall of the inverter. Since the cover body 10 in this embodiment is provided with a magnetic ring 20, and the axis of the magnetic ring 20 is coaxial with the axis of the wire hole 12, when connected, the wire can pass through the magnetic ring 20 and the wire hole 12 and pass through the protective cover.

[0052] Compared with the prior art, in this embodiment, by fixing the magnetic ring 20 on the protective cover, when the inverter is actually assembled, there is no need to wind the wires inside the magnetic ring 20, but only to pass through the magnetic ring 20 when the wires pass through the protective cover.

[0053] In other words, this embodiment improves the protective cover of the AC end and sets the magnetic ring 20 inside the protective cover, which not only saves the step of winding the magnetic ring 20 inside the inverter during the inverter assembly process, but also effectively improves the EMC performance of the inverter and increases the production efficiency of the inverter.

[0054] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0055] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. If not otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0056] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A protective cover, the protective cover is used for an inverter, characterized in that: The protective cover comprises: A cover body (10), wherein the cover body (10) is provided with a cavity (11) and a wire-passing hole (12), wherein the wire-passing hole (12) is located on a side wall of the cavity (11) and is in communication with the cavity (11); A magnetic ring (20), wherein the magnetic ring (20) is fixedly disposed in the cavity (11), and an internal through hole of the magnetic ring (20) is coaxially disposed with the wire hole (12).

2. The protective cover according to claim 1, characterized in that: A positioning structure (13) is provided in the cover body (10), and the magnetic ring (20) is fixed on the inner wall of the cavity (11) through the positioning structure (13).

3. The protective cover according to claim 2, characterized in that: The positioning structure (13) comprises a first annular convex rib (131) and a second annular convex rib (132); the first annular convex rib (131) and the second annular convex rib (132) are arranged on the inner wall of the wire hole (12) at intervals and surround to form a positioning ring (133); the magnetic ring (20) is installed in the positioning ring (133).

4. The protective cover according to claim 3, characterized in that: The cover body (10) is provided with an opening (15), the opening (15) is located on a side of the cavity (11) away from the wire hole (12), the first annular convex rib (131) is closer to the opening (15) than the second annular convex rib (132), and the first annular convex rib (131) is inclined in a direction closer to and away from the opening (15).

5. The protective cover according to claim 4, characterized in that: At least one notch portion (1311) is provided in the circumferential direction of the first annular convex rib (131).

6. The protective cover according to claim 4, characterized in that: The cover body (10) is provided with an annular outer flange (14), the annular outer flange (14) is arranged around the outer periphery of the opening (15), and the annular outer flange (14) is provided with a connecting hole (142).

7. The protective cover according to claim 6, characterized in that: An annular groove (141) is provided on the annular outer flange (14), and the annular groove (141) extends along the circumference of the annular outer flange (14).

8. The protective cover according to any one of claims 1 to 7, characterized in that: The protective cover also includes: A waterproof plug (40), wherein the waterproof plug (40) is detachably connected to the wire hole (12).

9. The protective cover according to any one of claims 1 to 7, characterized in that: There is at least one of the wire-passing hole (12) and the magnetic ring (20). When there are multiple wire-passing holes (12) and multiple magnetic rings (20), the multiple wire-passing holes (12) and the multiple magnetic rings (20) are arranged in a one-to-one correspondence.

10. An inverter, characterized in that: The inverter comprises a main body and a protective cover, wherein an AC connection port is arranged on the main body, wherein the protective cover comprises the protective cover according to any one of claims 1 to 9, wherein the protective cover is arranged at the AC connection port to cover the AC connection port, wherein a sealing strip (30) is arranged in an annular groove (141) of the protective cover, and wherein the sealing strip (30) is at least used to seal a gap between the protective cover and the main body.

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