Compact type multifunctional power utilization safety intelligent host

Abstract

A circuit board assembly is arranged in an installation cavity of a shell and comprises a power supply board, a first master control circuit board, a second master control circuit board and a first communication circuit board which are independent of one another, a communication control module in a master control circuit module is arranged on the second master control circuit board, and the first communication circuit board is arranged on the first master control circuit board. An MCU in the main control circuit is arranged on a first main control circuit board, and the first main control circuit board and a second main control circuit board are arranged in a stacked mode and electrically connected. A two-bus communication circuit is arranged on the first communication circuit board, and the first communication circuit board is located in an interlayer space between the first main control circuit board and the second main control circuit board; a power supply circuit is arranged on the power supply board, is arranged on one side of the first main control circuit board and is perpendicular to the plane where the first main control circuit board is located. According to the scheme, the installation space can be utilized to the maximum extent, and the product structure is compact and small.

Description

Technical Field

[0001] The invention relates to the technical field of power electrical protection equipment, and in particular to a compact multifunctional power safety intelligent host. Background Art

[0002] The current power safety hosts on the market usually need to integrate three-phase power detection, communication, power management and other modules, which leads to their large size, occupying more space in the distribution box, and inconvenient installation and maintenance. In traditional designs, all the main control circuit modules on the multifunctional power safety intelligent host are concentrated on the same main control circuit board, which requires the main control circuit board to occupy a large installation space. In addition, in order to fix the circuit board to the shell, it is necessary to process connecting structures such as screw holes on the shell and the circuit board. The processing and installation steps are relatively cumbersome, and structures such as screw holes and threaded columns also require additional space, which is not conducive to reducing the overall structure of the installed power safety intelligent host. On the other hand, since the structure at the connection of the shell is prone to deformation, the assembly is loosened, affecting the reliability of the connection between the upper and lower shells. Summary of the invention

[0003] In order to solve the above problems, the purpose of the present invention is to provide a compact multifunctional electricity safety intelligent host that can maximize the use of installation space and has a compact and small product structure.

[0004] A compact multifunctional electrical safety intelligent host comprises a housing, a mounting cavity is provided in the housing, a circuit board assembly is provided in the mounting cavity, and the circuit board assembly comprises:

[0005] A power supply board, a first main control circuit board, a second main control circuit board and a first communication circuit board are independent of each other, the communication control module in the main control circuit module is arranged on the second main control circuit board, the MCU in the main control circuit is arranged on the first main control circuit board, and the first main control circuit board and the second main control circuit board are stacked and electrically connected;

[0006] A second bus communication circuit is provided on the first communication circuit board, the first communication circuit board is located in the interlayer space between the first main control circuit board and the second main control circuit board, and the first communication circuit board is electrically connected to the second main control circuit board;

[0007] A power circuit is provided on the power supply board, and the power supply board is arranged on one side of the first main control circuit board and is perpendicular to the plane where the first main control circuit board is located.

[0008] Preferably, it comprises a second communication circuit board on which a 4G communication circuit is provided; the second communication circuit board is stacked above or below the second main control circuit board.

[0009] Preferably, the first main control circuit board and the second main control circuit board are connected via at least two sets of pin headers, and / or the first communication circuit board and the second main control circuit board are connected via at least two sets of pin headers.

[0010] Preferably, it includes a leakage four-temperature detection circuit board, which is arranged parallel to the first main control circuit board and connected below the first main control circuit board, and is located in the elevated space between the bottom of the first main control circuit board and the bottom of the installation cavity.

[0011] Preferably, card slots matching the edges of the power supply board are symmetrically arranged on the inner sides of the front and rear side plates of the shell, and the power supply board is plugged into and matched with the card slots.

[0012] Preferably, a hub interface is provided at the front end of the first main control circuit board, and a first opening is provided on the shell corresponding to the hub interface, the front end of the hub interface is exposed outwardly from the first opening, and a first positioning notch is formed at the lower end of the hub interface, and the lower edge of the first opening is positioned and matched with the first positioning notch; at least one first positioning column is provided in the installation cavity of the shell, and a first positioning hole corresponding to the first positioning column is provided on the first main control circuit board, and the first main control circuit board is installed by matching the first positioning column with the first opening.

[0013] Preferably, a heat dissipation cavity is formed between the first main control circuit board and the bottom of the shell, and a heat dissipation hole connecting the heat dissipation cavity with the external space is provided on the bottom of the shell.

[0014] Preferably, the second main control circuit board is arranged on the upper end of the hub interface, and the hub interface is located between the first main control circuit board and the second main control circuit board.

[0015] Preferably, the shell comprises an upper shell and a lower shell, and the upper shell and the lower shell are connected by a connecting groove and a connecting buckle to engage and fasten.

[0016] Preferably, a stop rib is provided on the upper shell body, and after the upper shell body and the lower shell body are connected in place, the stop rib provides an upper limit for the lower shell body, and the lower shell body provides a lower limit for the lower edge of the stop rib.

[0017] Due to the above scheme, the present application splits the main control circuit board into an independent first main control circuit board and a second main control circuit board. The first main control circuit board and the second main control circuit board are stacked, which can effectively reduce the installation space required for the main control circuit board as a whole, and the first main control circuit board and the second main control circuit board are electrically connected, which does not affect the realization of their functions. The main control circuit processing module related to the communication part is centrally arranged on the second main control circuit board, the two-bus communication circuit for controlling bus communication is arranged on the first communication circuit board, and the second communication circuit board is arranged in the interlayer space between the first main circuit board and the second main circuit board, which can make full use of the longitudinal space in the installation cavity, has a compact structure, and can effectively reduce the volume of the multifunctional power safety intelligent host. In addition, the first communication circuit board can be connected to a variety of external sensors for two-bus communication, which can expand the functions of the intelligent host. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of this application;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure from another angle;

[0020] Figure 3 A cross-sectional view at an angle for this application;

[0021] Figure 4 A cross-sectional view from another angle of the present application;

[0022] Figure 5 A schematic diagram of the installation position relationship between the power supply board in the installation cavity and the first main control circuit board and the second main control circuit board;

[0023] Figure 6 This is the installation diagram of the power supply board;

[0024] Figure 7 It is a schematic diagram of the internal structure of the lower shell;

[0025] Figure 8 It is a schematic diagram of the upper shell structure.

[0026] Reference numerals:

[0027] Upper shell 11, connecting groove 111, stop rib 112, lower shell 12, first opening 121, first positioning column 122, second positioning piece 123, connecting buckle 124, card slot 125, first main control circuit board 21, first positioning hole 211, second main control circuit board 22, first communication circuit board 23, second communication circuit board 24, power supply board 25, hub interface 26, first positioning notch 261, pin row 27, one leakage four temperature detection circuit board 28. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0029] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the present invention, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprises" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more, unless otherwise clearly specified.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] For the convenience of description, the present invention is based on the state after the smart host is installed. Figure 1 As shown, the side connected to the mounting rail is the "lower", the side opposite thereto is the "upper", the side where the hub interface is set is the "front", and the side opposite thereto is the "rear".

[0037] Embodiment 1:

[0038] A compact multifunctional power safety intelligent host that can be installed on a rail to monitor the power safety of three-phase electricity. Figure 1 and Figure 2 As shown, the compact multifunctional electricity safety intelligent host includes a shell, a mounting cavity is provided in the shell, a circuit board assembly is provided in the mounting cavity, and external communication control and power supply functions are realized through the circuit board assembly.

[0039] Combination Figure 3 and Figure 4 The circuit board assembly in this embodiment includes a power supply board 25, a first main control circuit board 21, a second main control circuit board 22 and a first communication circuit board 23, which are independent of each other. A part of the main control circuit module is arranged on the first main control circuit board 21, and the rest is arranged on the second main control circuit board 22. The first main control circuit board 21 and the second main control circuit board 22 are stacked and electrically connected. In this way, the main control circuit board is divided into two independent parts in terms of structure, and the stacked arrangement of the two parts can make full use of the installation space in the longitudinal direction; in terms of function, the first main control circuit board 21 and the second main control circuit board 22 are electrically connected, and only the main control circuit module is rearranged, which does not affect the original function.

[0040] In this embodiment, the communication control module in the main control circuit module is centrally arranged on the second main control circuit board 22, so that the external communication circuit in the intelligent host can be stacked above or below the second main control circuit board 22, so that the installation structure is more compact and the longitudinal space in the housing can be fully utilized. In addition, according to the above arrangement, the circuit structure is clearer, which is conducive to maintenance and troubleshooting.

[0041] The first communication circuit board 23 of this embodiment is provided with a two-bus communication circuit, and the first communication circuit board 23 can be connected to various external sensors such as external temperature sensors, current sensors, residual current sensors, and fire protection two-buses through the external connection interface to expand the functions of the intelligent host. The two-bus communication circuit is independently set and electrically connected to the second main control circuit board 22, which can further reduce the installation space of the second main control circuit board 22, and the first communication circuit board 23 is installed in the interlayer space between the first main control circuit board 21 and the second main control circuit board 22, and its installation does not occupy additional space in the installation cavity.

[0042] The second communication circuit board 24 is also included, and a 4G communication circuit is provided on the second communication circuit board 24; the second communication circuit board 24 is stacked above or below the second main control circuit board 22, and is preferably arranged above the second main control circuit board 22. Through the second communication circuit board 24, remote information communication of the smart host based on the 4G network can be realized, and the smart host can be remotely controlled.

[0043] In a preferred embodiment, the first main control circuit board 21 and the second main control circuit board 22 are connected by at least two groups of pin headers 27. By setting at least two groups of pin headers 27 on both sides, the pin headers 27 can provide reliable support while realizing the electrical connection of the two interconnected circuit boards. Taking the connection between the first main control circuit board 21 and the second main control circuit board 22 as an example, the first main control circuit board 21 is directly connected to the housing, and the housing provides support and positioning from below. The bottom of the second main control circuit board 22 is connected to the upper part of the first main control circuit board 21 through the pin header 27 connector. Each group of pin headers 27 contains a plurality of conductive pins arranged in parallel, and the connection is reliable. The interlayer space between the first main control circuit board 21 and the second main control circuit board 22 can be defined by the pin headers 27. In addition, since the second main control circuit board 22 is located above the first main circuit board 21, its own gravity makes the pin header 27 connection structure more compact, ensuring the reliability of the connection between the two. The first communication circuit board 23 and the second main control circuit board 22 are connected by at least two groups of pin headers 27. Since the circuit structure on the first communication circuit board 23 is simple and has fewer electronic components, even if it is connected to the second main control circuit board 22 from the bottom through at least two groups of pin headers 27, a reliable connection can be guaranteed.

[0044] In a preferred embodiment, it further includes a leakage and four-temperature detection circuit board 28, which is used to detect whether there is residual current in a return circuit and the data of four temperature detectors. The leakage and four-temperature detection circuit board 28 is arranged in parallel with the first main control circuit board 21 and is connected below the first main control circuit board 21, and is located in the elevated space at the bottom of the first main control circuit board 21 away from the bottom of the installation cavity. The leakage and four-temperature detection circuit board 28 is fixedly welded to the first main control circuit board 21, or is also connected by pin headers. With such an arrangement, the space at the bottom of the first main control circuit board 21 can be fully utilized, and the installation structure in the installation cavity is compact.

[0045] A power supply board 25 is also provided in the installation cavity, and a power supply circuit is provided thereon. As Figure 4 shown, the power supply board 25 is arranged on one side of the first main control circuit board 21 and is perpendicular to the plane where the first main control circuit board 21 is located. With such an arrangement, the lateral and longitudinal spaces inside the installation cavity can be fully utilized to install the power supply board 25, saving the assembly space.

[0046] Combined Figure 6 and Figure 7 , card slots 125 matching the edges of the power supply board 25 are symmetrically arranged on the inner sides of the front and rear side plates of the housing. The power supply board 25 is in plug-in fit with the card slots 125. Through this plug-in structure, no additional connection structure needs to be processed on the power supply board 25, and the structure is simpler through the plug-in connection method. At the same time, by processing a pair of plate-like structures on the inner wall of the side plate of the housing to form the card slots 125, the plate-like structure is connected to both the side plate and the bottom plate of the housing at the same time, and can be used as a strengthening structure of the housing at the same time.

[0047] The installation structure of the first main control circuit board 21 in the housing will be further described below. First, as Figure 7As shown, at least one first positioning column 122 is provided in the installation cavity of the shell, and a first positioning hole 211 corresponding to the first positioning column 122 is provided on the first main control circuit board 21. The first positioning column 122 provides limiting support for the first main control circuit board 21 from below on the one hand, and the initial positioning of the positioning board on the other hand, so as to facilitate its installation and alignment. In one embodiment, the radial dimension of the upper part of the first positioning column 122 becomes smaller, and a step structure is formed in its axial direction. The upper part of the first positioning column 122 passes through the first positioning hole 211 upward, and the upper part of the first positioning column 122 cooperates with the first positioning hole 211 to provide circumferential positioning for the first main control circuit board 21, and the widest part of the step structure is larger than the size of the first positioning hole 211, so that the first positioning column 122 can provide limiting support for the first main control circuit board 21 from below at the same time. In another optional embodiment, a threaded hole is provided on the first positioning column 122, and the first main circuit board 21 is connected to the first positioning column 122 by threaded connection at the corresponding first positioning hole 211.

[0048] On the other hand, a hub interface 26 is provided at the front end of the first main control circuit board 21, and the hub interface 26 is electrically connected to the first communication circuit board 23; a first opening 121 is provided on the shell corresponding to the hub interface 26, and the front end of the hub interface 26 is exposed outward from the first opening 121 for connecting an external sensor. A first positioning notch 261 is formed at the lower end of the hub interface 26, and the lower edge of the first opening 121 is positioned and matched with the first positioning notch 261. The connection / positioning of the front side of the first main control circuit board 21 and the shell can be achieved by matching the lower end of the hub interface 26 with the first opening 121. At this time, a first connection point is formed between the hub interface 26 and the first opening 121, and at least one first positioning column 122 cooperates with the first positioning hole 211 to form at least one second connection point, thereby achieving the connection between the first main control circuit board 21 and the shell. Preferably, at least two second connection points are provided, and the two second connection points are located on the side opposite to the hub interface 26, so that a triangular stable support structure is formed between the first connection point and the two second connection points. According to the above arrangement, at most a threaded connection structure needs to be applied to the first positioning column 122 , which can simplify the installation.

[0049] Preferably, the second main control circuit board 22 is arranged on the upper end of the hub interface 26, and the hub interface 26 is located between the first main control circuit board 21 and the second main control circuit board 22. With this arrangement, on the one hand, the hub interface 26 can provide support for the second main control circuit board 22; at the same time, since the first main control circuit board 21 and the second main control circuit board 22 form a connection structure with relatively fixed positions through the pin 27 structure, the second main control circuit board 22 can also provide an upper limit for the hub structure, and thus provide an upper limit for the first main control circuit board 21. Meanwhile, the first opening 121 is arranged around the outer edge of the hub interface 26, which can also position the hub.

[0050] As Figure 3 shown, a second positioning member 123 is provided at one end of the inner side of the housing close to the first main control circuit board 21, and a second positioning port is correspondingly provided on the side of the first main control circuit board 21. In this embodiment, the second positioning port is a notch opening towards the second positioning member 123. During installation, on the one hand, the installation can be guided through the cooperation of the second positioning member 123 and the second positioning port; on the other hand, the second positioning member 123 can keep a distance between the first main control circuit board 21 and the inner wall of the housing, avoiding damage to the electronic components thereon during the installation process.

[0051] As Figure 7 and Figure 8 shown, the housing includes an upper housing 11 and a lower housing 12, and the upper housing 11 and the lower housing 12 are tightly connected through the engagement of a card slot 125, a connection groove 111, and a connection buckle 124. The assembly of the lower housing 12 and the upper housing 11 is mainly achieved by the engagement of the protruding hooks around the lower housing 12 with the recessed connection groove 111 of the upper housing 11, and the structure is simple. Preferably, as shown in the schematic diagram at A in Figure 3 , a stop edge 112 is provided on the upper housing 11. After the upper housing 11 and the lower housing 12 are connected in place, the stop edge 112 provides an upper limit for the lower housing 12, and the lower housing 12 provides a lower limit for the lower edge of the stop edge 112. Thus, even if there is a phenomenon that the upper housing 11 and the lower housing 12 are loosened due to external force impact or because of the injection molding deformation of the upper and lower housings 12, the upper housing 11 is provided with the stop edge 112, and the stop edge 112 effectively prevents the upper housing 11 and the lower housing 12 from being loosened due to external force impact or because of the injection molding deformation of the upper and lower housings 12, ensuring the reliability of the connection between the upper housing 11 and the lower housing 12.

[0052] In summary, the present invention can effectively reduce the overall installation space required for the main control circuit board. The installation occupancy space on a common 35-mm installation rail is only 90 mm, indicating a small installation occupancy space. Moreover, through the two-bus communication circuit, voltage sensors, temperature sensors, current sensors, residual current sensors can be connected, and the fire two-bus can be used to connect other sensors downward. Information can be transmitted to other terminals in real time through wireless communication, and the intelligent host of the embodiment of the present invention can be remotely controlled and operated, demonstrating powerful functions.

[0053] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A compact multifunctional electrical safety intelligent host, comprising a housing, a mounting cavity being provided in the housing, characterized in that: It includes a power supply board, a first main control circuit board, a second main control circuit board and a first communication circuit board which are independent of each other, wherein the communication control module in the main control circuit module is arranged on the second main control circuit board, the MCU in the main control circuit is arranged on the first main control circuit board, and the first main control circuit board and the second main control circuit board are stacked and electrically connected; A second bus communication circuit is provided on the first communication circuit board, the first communication circuit board is located in the interlayer space between the first main control circuit board and the second main control circuit board, and the first communication circuit board is electrically connected to the second main control circuit board; A power circuit is provided on the power supply board, and the power supply board is arranged on one side of the first main control circuit board and is perpendicular to the plane where the first main control circuit board is located.

2. The compact multifunctional electrical safety intelligent host according to claim 1 is characterized in that: It includes a second communication circuit board, on which a 4G communication circuit is arranged; the second communication circuit board is stacked above or below the second main control circuit board.

3. The compact multifunctional electrical safety intelligent host according to claim 1 is characterized in that: The first main control circuit board and the second main control circuit board are connected via at least two sets of pin headers, and / or the first communication circuit board and the second main control circuit board are connected via at least two sets of pin headers.

4. The compact multifunctional electrical safety intelligent host according to claim 1 is characterized in that: It includes a leakage four-temperature detection circuit board, which is arranged in parallel with the first main control circuit board and connected below the first main control circuit board, and is located in the raised space between the bottom of the first main control circuit board and the bottom of the installation cavity.

5. The compact multifunctional electrical safety intelligent host according to claim 1 is characterized in that: The inner sides of the front and rear side plates of the shell are symmetrically provided with card slots matching the edges of the power supply board, and the power supply board is plugged into and matched with the card slots.

6. The compact multifunctional electrical safety host according to claim 1, characterized in that: A hub interface is provided at the front end of the first main control circuit board, and the hub interface is electrically connected to the first communication circuit board; a first opening is provided on the shell corresponding to the hub interface, and the front end of the hub interface is exposed outwardly from the first opening; a first positioning notch is formed at the lower end of the hub interface, and the lower edge of the first opening is positioned and matched with the first positioning notch; at least one positioning column is provided in the installation cavity of the shell, and positioning holes corresponding to the positioning columns are provided on the first main control circuit board, and the first main control circuit board is installed through the cooperation of the positioning columns and the first opening.

7. The compact multifunctional electrical safety host according to claim 6, characterized in that: A heat dissipation cavity is formed between the first main control circuit board and the bottom of the shell, and a heat dissipation hole connecting the heat dissipation cavity with the external space is arranged on the bottom of the shell.

8. The compact multifunctional electrical safety host according to claim 6, characterized in that: The second main control circuit board is arranged on the upper end of the hub interface, and the hub interface is located between the first main control circuit board and the second main control circuit board.

9. The compact multifunctional electrical safety host according to claim 1, characterized in that: The shell comprises an upper shell and a lower shell, and the upper shell and the lower shell are connected by a connecting groove and a connecting buckle in a locking and fastening manner.

10. The compact multifunctional electrical safety host according to claim 9, characterized in that: The upper shell is provided with a stop rib. After the upper shell and the lower shell are connected in place, the stop rib provides an upper limit for the lower shell, and the lower shell provides a lower limit for the lower edge of the stop rib.

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