Grounding structure and electrical equipment

Abstract

A grounding structure and an electric device are provided. The electric device includes a case (1) having grounding needs and a functional device (2) at least partially disposed outside the case (1), and the grounding structure includes at least one ground connection part (3), the ground connection part (3) is disposed on a shell wall of the functional device (2) located on the outer part of the case (1), and the shell wall of the functional device (2) is conductively connected to the case (1). In the actual application process, the grounding structure satisfies the grounding needs of the case (1) of the electric device and does not need to occupy the internal space of the case (1), i.e., there is no need to consider the safety standard space between the ground connection part (3) and the electric components in the case (1), which contributes to the miniaturization of the case (1).

Description

[Technical field]

[0001] This application claims priority to a Chinese patent application filed with the China Patent Office on June 21, 2022, bearing application number 202221564114.5 and entitled "Grounding structure and electrical equipment", the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of electrical equipment grounding, and more particularly to a grounding structure and an electrical equipment. [Background technology]

[0003] As the cost of electrical equipment such as inverters and combiner boxes gradually decreases, the integration of electrical equipment becomes higher and higher. In the prior art, an electrical equipment includes a housing and an inductor, and the inductor protrudes from the outside of the housing. A grounding mark and a grounding connection part (e.g., a grounding screw hole) are provided on the housing, and the arrangement of the grounding connection part on the case generally requires a standoff on the housing, which occupies the internal space of the case, which is disadvantageous to miniaturization of the case. Summary of the Invention [Problem to be solved by the invention]

[0004] As described above, the problem of the placement of a ground connection part in an electrical device occupying space inside the case and affecting the miniaturization of the case is a problem that those skilled in the art are trying to solve.

[0005] In view of this, in order to solve the problem that the arrangement of the ground connection part in an electric device occupies the internal space of the case, affecting the miniaturization of the case, the present application provides a grounding structure and an electric device. [Means for solving the problem]

[0006] To achieve the above objectives, the present application provides the following technical solutions: That is, the grounding structure is applied to an electrical device, the electrical device including a case having the above-mentioned grounding needs and a functional device at least partially disposed outside the case, the grounding structure comprising: At least one ground connection is provided on a shell wall located on an outer portion of the case in the functional device; The shell wall of the functional device is conductively connected to the case.

[0007] Preferably, the ground structure further includes a ground marker (4), the ground marker (4) being provided on a shell wall located in an outer portion of the case of the functional device and being positioned close to the ground connection.

[0008] Preferably, the ground connection is a ground screw hole that engages with a ground bolt and a ground cable to be connected to the ground, or a ground screw post that engages with a ground nut and a ground cable to be connected to the ground.

[0009] Preferably, the ground connection is provided on a side of the shell wall of the functional device and is located close to the bottom.

[0010] Preferably, the functional device is a die cast, machined, 3D printed or moulded part.

[0011] Preferably, the ground connection portion and the functional device are of an integrally molded structure or a separate fixed connection structure.

[0012] Preferably, at least one of the ground connection and the ground mark and the functional device are of one piece construction.

[0013] Preferably, the ground mark is a protruding or recessed structure formed in the shell wall.

[0014] Preferably, the ground marking is provided on the shell wall by stamping, by laser marking, by labelling or by printing.

[0015] Preferably, the functional device is an inductor housing.

[0016] In the background art, the above-mentioned grounding structure is applied to an electric device, the electric device includes a case having a grounding need and a functional device at least partially disposed outside the case, the grounding structure includes at least one ground connection part, the ground connection part is disposed on a shell wall located on the outer part of the case in the functional device, and the shell wall of the functional device is conductively connected to the case. In the actual application process, the grounding structure satisfies the grounding need of the case of the electric device, and does not need to occupy the inner space of the case, that is, there is no need to consider the safety standard space (electrical clearance, creepage distance, etc.) between the grounding connection part and the electric components in the case, which contributes to the miniaturization of the case.

[0017] In addition, the present application further provides an electric device including a grounding structure, the grounding structure being the grounding structure described in any of the above solutions. Since the above grounding structure has the above technical effects, the electric device including the grounding structure should also have the corresponding technical effects, and no further details are provided here.

[0018] Preferably, the electrical device is a solar power generating electrical device.

[0019] In order to more clearly explain the technical solutions of the embodiments of the present application or the prior art, the following briefly introduces the drawings required for the description of the embodiments or the prior art. The drawings introduced below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings on the premise that they do not make any work worthy of inventive step. [Brief description of the drawings]

[0020] [Figure 1] FIG. 1 is a schematic diagram of the shaft side structure of a ground screw hole applied as a ground connection part of a ground structure provided by an embodiment of the present application; [Diagram 2] FIG. 1 is a front view of a ground screw hole used as a ground connection part of a ground structure provided by an embodiment of the present application; [Diagram 3] FIG. 1 is a schematic diagram of the shaft side structure of a ground screw post applied as a ground connection part of a ground structure provided by an embodiment of the present application; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] The present application aims to provide a grounding structure and an electric device that solves the problem that arranging a ground connection part in an electric device occupies space inside the case, affecting the miniaturization of the case.

[0022] Hereinafter, the technical solutions of the embodiments of the present application will be clearly and completely described in conjunction with the drawings of the embodiments of the present application, and the described embodiments are not all the embodiments, but only some of the embodiments of the present application. Based on the embodiments of the present application, on the premise that a person skilled in the art does not make any inventive efforts, all other embodiments obtained fall within the protection scope of the present application.

[0023] Referring to Figures 1 to 3, Figure 1 is a schematic diagram of the three-dimensional structure of a ground screw hole applied as a ground connection part of a ground structure provided by an embodiment of the present application, Figure 2 is a schematic diagram of the front structure of a ground screw hole applied as a ground connection part of a ground structure provided by an embodiment of the present application, and Figure 3 is a schematic diagram of the three-dimensional structure of a ground screw post applied as a ground connection part of a ground structure provided by an embodiment of the present application.

[0024] An embodiment of the present application provides a grounding structure for an electric device, and with reference to FIGS. 1 to 3, the electric device includes a case 1 that has a grounding need and can be grounded, and a functional device 2 that is at least partially provided outside the case 1, and electric devices are mounted in the case 1, and these electric devices have a grounding need. The functional device 2 is a device having a corresponding function provided for the electric devices in the case 1 to operate better, and specifically may be an inductor housing with a magnetic component provided therein, a heat sink for assisting heat dissipation of the case, or other functional device disposed relative to the case 1. In addition, the grounding structure specifically includes at least one ground connection part 3, and the ground connection part 3 is provided on a shell wall located on the outer part of the case in the functional device 2, and the shell wall of the functional device 2 is conductively connected to the case 1.

[0025] In actual application, this grounding structure has the grounding connection part 3 disposed on the shell wall of the functional device 2, and the shell wall of the functional device 2 conductively connected to the case 1, thereby satisfying the grounding needs of the case 1 of the electrical equipment and not occupying the internal space of the case 1, i.e., there is no need to consider the safety standard space (electrical clearance, creepage distance, etc.) between the grounding connection part 3 and the electrical components in the case 1, which contributes to the miniaturization of the case.

[0026] Here, generally, the grounding structure further includes a grounding marker 4, which is provided on the shell wall of the functional device 2 and is positioned close to the grounding connection portion 3, thereby enabling a user or operator to easily perform the grounding operation.

[0027] In addition, the number of the ground connection parts 3 may be set to 1 or may be set to more than one, for example, 2. In the actual application process, a suitable number of ground connection parts may be selected according to actual needs, and is not specifically limited here.

[0028] In addition, the above-mentioned ground connection part 3 may be a ground screw hole that is connected to the ground by engaging with a ground bolt and a ground cable, or a ground screw post that is connected to the ground by engaging with a ground nut and a ground cable. Of course, it can be understood that the application of the ground screw hole and the ground screw post as the ground connection part 3 is merely an example of an embodiment of the present application, and other forms of ground connection parts commonly known to those skilled in the art, such as a ground connection sheet or a ground clip, may be applied in the actual application process. In the actual application process, the form of the ground connection part 3 may be selected and arranged according to actual needs, and is not specifically limited here.

[0029] 2, in a further embodiment, in order to save the length of the ground cable, the above-mentioned ground connection part 3 may be specifically provided on the side of the shell wall of the functional device 2 and disposed close to the bottom. Of course, it can be understood that the above-mentioned form in which the ground connection part 3 is provided on the side of the shell wall of the functional device 2 and disposed close to the bottom is merely an example of an embodiment of the present application, and in the actual application process, the ground connection part 3 may be designed in other positions, for example, on the bottom side of the shell wall, according to the arrangement needs, and is not specifically limited here.

[0030] In some specific embodiments, the functional device 2 may be specifically a die-cast part, a machined part, a 3D printed part, or a molded part, etc., and may be manufactured by selecting a corresponding processing form according to actual needs in the actual application process, and is not specifically limited here.

[0031] Here, the ground connection part 3 and the functional device 2 may be specifically designed to have an integrally molded structure, or may be designed to have a separate fixed connection structure. In the actual application process, the corresponding molding form of the ground connection part 3 on the functional device 2 may be selected according to the specific structure of the ground connection part 3. When a ground screw post is applied as the ground connection part 3, a separate fixed connection structure may be applied, for example, it may be fixed to the functional device 2 by welding. Of course, integral molding may be applied. When a ground screw hole is applied as the ground connection part 3, the ground connection part 3 is preferably designed to have a structure that is integrally molded with the functional device 2, for example, it can be realized by a machined screw hole.

[0032] In a further embodiment, when the ground structure includes the ground connection part 3 and the ground mark 4 at the same time, at least one of the ground connection part 3 and the ground mark 4 may be designed to be integrally molded with the functional device 2. That is, one of the ground connection part 3 and the ground mark 4 may be designed to be integrally molded with the functional device 2 (e.g., die-cast molding), and the other may be provided on the functional device 2 in the form of external attachment or post-processing, and both the ground connection part 3 and the ground mark 4 may be provided on the functional device 2 in the form of integral molding, and may be selected and arranged according to actual needs in the actual application process. For example, when the functional device 2 is a die-cast member, the ground connection part 3 (e.g., ground screw hole (see FIG. 1 and FIG. 2) or ground screw post (see FIG. 3)) and the ground mark 4 may be both molded by a mold, and there is no need to add a separate process for mounting and fixing other parts, and the number of parts, processes, and man-hours may be reduced, thereby reducing the overall cost.

[0033] In some specific embodiments, the structural aspect represented by the ground mark 4 on the shell wall of the functional device 2 may be a protrusion structure or a recess structure formed on the shell wall. Designed in this structural aspect, the ground mark 4 is less susceptible to damage caused by the long-term effects of the external environment, and its service life is longer.

[0034] Here, the ground mark 4 can be specifically provided on the shell wall by stamping, laser marking, or labeling or printing. In the actual application process, the corresponding processing arrangement method can be selected according to actual needs, and is not specifically limited here.

[0035] In addition, the present application further provides an electrical device including a grounding structure, the grounding structure being the grounding structure described in any of the above solutions. Since the above grounding structure has the above technical effects, the electrical device including the grounding structure should also have the corresponding technical effects, and no further details are provided here.

[0036] In a further embodiment, the electrical equipment may specifically be a solar power generation electrical equipment, such as an inverter, a rectifier, or a combiner box, and may be any electrical equipment having grounding needs and functional devices, and is not specifically limited herein.

[0037] Here, each embodiment in this specification will be described in a progressive manner, with each embodiment mainly describing the differences from other embodiments, and referring to each other for similar or similar parts between each embodiment.

[0038] Herein, the terms "system", "apparatus", "unit" and / or "module" used in this application are merely ways of distinguishing different components, elements, parts, portions or assemblies at different levels, however, other words may be substituted if they can achieve the same purpose.

[0039] As shown in the present application and claims, unless the specification clearly indicates an exception, words such as "a," "one," "a kind," and / or "the" are not limited to the singular but may include the plural. In general, the terms "comprise" and "comprise" merely present the stated steps and elements as including, and do not constitute an exclusive list, and the method or device may include other steps or elements. An element qualified by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, product, or device in which the element is included.

[0040] In the description of the examples of the present application, unless otherwise specified, " / " means "or", for example, A / B means A or B, and "and / or" in this specification is simply a relational relationship for describing related objects and indicates the existence of three relations, for example, A and / or B indicates three situations: A exists alone, A and B exist simultaneously, and B exists alone. Also, in the description of the examples of the present application, "plurality" means two or more than two.

[0041] Hereinafter, the terms "first", "second", etc. are merely for descriptive purposes and are not intended to indicate or suggest a relative importance or to imply a number of the designated technical features, whereby a feature expressed as "first" or "second" may explicitly or implicitly include one or more of the indicated features.

[0042] When a flowchart is used in this application, the flowchart describes operations performed by a system according to an embodiment of the application, where the previous or subsequent operations do not necessarily have to be performed in exact order. Conversely, the steps may be processed in reverse order, or simultaneously. Also, other operations may be added to these operations, or one or more operations may be removed from these operations.

[0043] In this specification, the principles and embodiments of the present application are specifically described using examples, and the above description of the examples is merely for understanding the gist of the present application. Those skilled in the art may make some improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application. [Explanation of symbols]

[0044] 1 Case 2. Functional Devices 3. Ground connection 4...Earth sign

Claims

1. A grounding structure for an electrical device, the electrical device including a case (1) having grounding needs and a functional device (2) at least partially disposed outside the case (1), the grounding structure comprising: At least one ground connection (3) provided in a shell wall located in an outer part of the case (1) in the functional device (2), A grounding structure, characterized in that a shell wall of the functional device (2) is conductively connected to the case (1).

2. The ground structure further comprises a ground marker (4), The grounding structure according to claim 1, characterized in that the grounding mark (4) is provided on a shell wall located in an outer portion of the case (1) in the functional device (2) and is positioned close to the ground connection portion (3).

3. 2. The grounding structure according to claim 1, wherein the ground connection portion (3) is a ground screw hole that is connected to the ground by engaging with a ground bolt and a ground cable, or a ground screw post that is connected to the ground by engaging with a ground nut and a ground cable.

4. 2. The ground structure according to claim 1, wherein the ground connection (3) is provided on a side of a shell wall of the functional device (2) and is located close to a bottom.

5. The ground structure according to claim 1, characterized in that the functional device (2) is a die-cast part, a machined part, a 3D printed part or a molded part.

6. 6. The ground structure according to claim 5, wherein the ground connection portion (3) and the functional device (2) are an integrally molded structure or a separate fixed connection structure.

7. 3. The ground structure according to claim 2, wherein at least one of the ground connection portion (3) and the ground mark (4) and the functional device (2) are of a one-piece structure.

8. The ground structure according to claim 2, characterized in that the ground mark (4) is a protruding or recessed structure formed on the shell wall.

9. 3. The grounding structure according to claim 2, characterized in that the grounding marking (4) is provided on the shell wall by stamping, by laser marking, by labelling or by printing.

10. The ground structure according to any one of claims 1 to 9, characterized in that the functional device (2) is an inductor housing.

11. 11. An electrical device including a ground structure, characterized in that the ground structure is the ground structure according to any one of claims 1 to 10.

12. The electrical device according to claim 11, wherein the electrical device is a solar power generating electrical device.

Images