Circuit board structure and electric energy meter

Abstract

The utility model provides a circuit board structure and an electric energy meter, and relates to the technical field of electrical instruments. The circuit board structure provided by the utility model has a first direction and a second direction which intersect with each other. The circuit board structure comprises a first circuit board, a second circuit board and a connecting board. Wherein the second circuit board and the first circuit board are stacked in the first direction, and a gap is formed between the second circuit board and the first circuit board. The connecting plate is located on one side of the first circuit board in the second direction, the first circuit board and the second circuit board are both opposite to the connecting plate, and the first circuit board and the second circuit board are electrically connected with the connecting plate. Thus, the connecting plate can make full use of the gap between the first circuit board and the second circuit board, the possibility that a large space is additionally occupied for achieving electric connection between the first circuit board and the second circuit board is reduced, and arrangement of the circuit board structure in the electric energy meter is facilitated.

Description

Technical Field

[0001] This application relates to the field of electrical instrumentation technology, and in particular to a circuit board structure and an energy meter. Background Technology

[0002] As the core component of an electricity meter, the circuit board structure undertakes multiple functions, including electricity metering, data processing, communication, and display. With the increasing functionality and integration of electricity meters, the number of devices connected to the circuit board structure is also increasing.

[0003] In related technologies, to connect multiple devices, the circuit board structure typically includes multi-layer circuit boards, with multiple devices mounted on different circuit boards. In this configuration, the circuit boards are usually connected via pins and sockets. However, this configuration occupies a significant amount of internal space in the electricity meter, which is not conducive to the installation of the circuit board structure within the meter. Utility Model Content

[0004] This application provides a circuit board structure and an energy meter, which facilitates the installation of the circuit board structure in the energy meter.

[0005] In a first aspect, this application provides a circuit board structure having intersecting first and second directions. The circuit board structure includes a first circuit board, a second circuit board, and a connecting board. The second circuit board and the first circuit board are stacked along the first direction, with a gap between them. The connecting board is located on one side of the first circuit board in the second direction, and both the first and second circuit boards are opposite to the connecting board, and both are electrically connected to the connecting board.

[0006] Thus, in this embodiment, the first circuit board and the second circuit board can be electrically connected through a connecting plate. In this arrangement, the connecting plate can make full use of the gap between the first and second circuit boards, reducing the possibility of occupying a large amount of extra space to achieve the electrical connection between the first and second circuit boards, and facilitating the installation of the circuit board structure in the energy meter.

[0007] Optionally, the connecting board is provided with etched lines, the end of the etched lines facing the first circuit board is electrically connected to the first circuit board, and the end of the etched lines facing the second circuit board is electrically connected to the second circuit board.

[0008] In this way, the side of the connecting board facing the first circuit board can be electrically connected to the first circuit board, and the side of the connecting board facing the second circuit board can be electrically connected to the second circuit board. Furthermore, the circuit board can achieve electrical connection between the side of the connecting board facing the first circuit board and the side of the connecting board facing the second circuit board through its own etched circuitry.

[0009] Optionally, a first wiring structure is provided on the first circuit board, and a second wiring structure is provided on the second circuit board. An etched circuit is provided on the connecting board; the end of the etched circuit facing the first circuit board is soldered to the first wiring structure, and the end of the etched circuit facing the second circuit board is soldered to the second wiring structure.

[0010] The design of the first and second wiring structures can improve the strength of the connection between the etched circuit and the first circuit board, enhance the mechanical stability between the connecting board and the first circuit board, and make the electrical connection more stable.

[0011] Optionally, there are multiple first wiring structures and multiple second wiring structures, with each of the multiple first wiring structures corresponding to one of the multiple second wiring structures and electrically connected through different etched lines.

[0012] With the above configuration, the first circuit board and the second circuit board can be electrically connected through multiple etched lines. This increases the number of electrical connection paths between the two circuit boards, providing more signal transmission paths and improving the stability of the electrical connection.

[0013] Optionally, multiple first wiring structures may be located on the same straight line, and / or multiple second wiring structures may be located on the same straight line.

[0014] This simplifies the soldering process between the first circuit board and the connecting board, and / or simplifies the soldering process between the second circuit board and the connecting board.

[0015] Optionally, a first positioning structure is provided on the first circuit board, and a second positioning structure is provided on the connecting board at a position opposite to the first circuit board, with the first positioning structure cooperating with the second positioning structure. And / or, a third positioning structure is provided on the second circuit board, and a fourth positioning structure is provided on the connecting board at a position opposite to the second circuit board, with the third positioning structure cooperating with the fourth positioning structure.

[0016] In this way, the connecting board can be supported and positioned by the first circuit board and / or the second circuit board, reducing the possibility of additional tooling and thus reducing the investment in design and production tooling.

[0017] Optionally, when the circuit board structure includes a first positioning structure and a second positioning structure, the first positioning structure is one of a positioning groove and a positioning part, and the second positioning structure is the other of a positioning groove and a positioning part. When the circuit board structure includes a third positioning structure and a fourth positioning structure, the third positioning structure is one of a positioning groove and a positioning part, and the fourth positioning structure is the other of a positioning groove and a positioning part. The positioning part is embedded in the positioning groove.

[0018] With the above settings, the first circuit board can support and position the connecting board in multiple ways, and the second circuit board can also support and position the connecting board in multiple ways, which can improve the flexibility of the circuit board structure settings.

[0019] Optionally, the circuit board structure also includes a third circuit board, which is located on the side of the second circuit board opposite to the first circuit board and is spaced apart from the second circuit board. The connecting board is also electrically connected to the third circuit board.

[0020] In this way, the third circuit board can be electrically connected to the first circuit board and / or the second circuit board through the connecting board, so that the third circuit board can transmit signals with other structures in the circuit board structure, thereby realizing the collaboration of the first circuit board, the second circuit board and the third circuit board.

[0021] Optionally, a limiting groove is provided on the third circuit board, and a limiting boss is provided on the connecting plate at a position opposite to the third circuit board, with the limiting boss engaging with the limiting groove. Alternatively, a limiting boss is provided on the third circuit board, and a limiting groove is provided on the connecting plate at a position opposite to the third circuit board, with the limiting boss engaging with the limiting groove.

[0022] In this way, the third circuit board can also support and position the connecting board, which can improve the support effect of the circuit board structure itself on the connecting board, so as to facilitate subsequent soldering.

[0023] Secondly, this application provides an electricity meter, including any of the circuit board structures described in the first aspect above.

[0024] The beneficial effects of the electricity meter provided in the second aspect and the various possible designs of the second aspect can be found in the first aspect and the various possible implementations of the first aspect, and will not be repeated here. Attached Figure Description

[0025] Figure 1 This is one of the schematic diagrams of a circuit board structure according to an embodiment of this application.

[0026] Figure 2 This is a second schematic diagram of a circuit board structure according to an embodiment of this application.

[0027] Figure 3 This is an exploded view of a circuit board structure according to an embodiment of this application.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100: Circuit board structure; 10: First circuit board; 11: First wiring structure; 12: First positioning structure; 20: Second circuit board; 21: Second wiring structure; 22: Third positioning structure; 30: Connecting board; 31: Etched circuit; 32: Second positioning structure; 33: Fourth positioning structure; 40: Third circuit board; 51: Limiting groove; 52: Limiting boss; X: First direction; Y: Second direction. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0032] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0033] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists, A and B exist simultaneously, or B exists. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0034] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0035] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0036] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0037] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, "connection" or "linkage" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by a partition, such as a connection fixed by screws, bolts, or other partitions; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In circuit structures, "connection" or "linkage" can refer not only to a physical connection but also to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate element, as long as the circuit is connected; it can also refer to the internal connection of two elements. A signal connection can refer not only to a signal connection through a circuit but also to a signal connection through a medium, such as radio waves. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0039] For example, this application provides an electricity meter, which includes as follows: Figure 1 The circuit board structure shown is 100.

[0040] An electricity meter is a device used to measure and record electricity consumption. It can detect parameters such as voltage, current, and power, and detect any abnormalities in electricity use to ensure electrical safety. The circuit board structure 100, as the core component of the electricity meter, undertakes functions such as signal acquisition, data calculation and storage, and communication, ensuring the normal operation of the electricity meter.

[0041] In this application, the circuit board structure 100 can reduce its occupation of the internal space of the electricity meter, making the installation of the circuit board structure 100 in the electricity meter more convenient, and can also save the internal space of the electricity meter to install other components.

[0042] The circuit board structure 100 provided in the embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0043] Reference Figure 1 As shown, the circuit board structure 100 has intersecting first direction X and second direction Y. The circuit board structure 100 includes a first circuit board 10, a second circuit board 20, and a connecting plate 30. The second circuit board 20 and the first circuit board 10 are stacked along the first direction X, and a gap exists between them. The connecting plate 30 is located on one side of the first circuit board 10 in the second direction Y. Both the first circuit board 10 and the second circuit board 20 are opposite to the connecting plate 30, and both are electrically connected to the connecting plate 30.

[0044] In this embodiment, the circuit board structure 100 includes a first circuit board 10 and a second circuit board 20 stacked together. Components can be installed and connected on both the first circuit board 10 and the second circuit board 20 to meet the requirements for normal operation of the electricity meter. The electrical connection between the first circuit board 10 and the second circuit board 20 can be achieved through a connecting plate 30.

[0045] Specifically, the connecting plate 30 can be disposed on one side of the first circuit board 10 in the second direction Y. Since the first direction X intersects the second direction Y, the connecting plate 30 can be located on a side different from the stacking direction of the first circuit board 10 and the second circuit board 20. In this application, the connecting plate 30 can be opposite to both the first circuit board 10 and the second circuit board 20. Thus, the portion of the connecting plate 30 opposite to the first circuit board 10 can be electrically connected to the first circuit board 10, and the portion of the connecting plate 30 opposite to the second circuit board 20 can be electrically connected to the second circuit board 20.

[0046] Thus, the first circuit board 10 and the second circuit board 20 can be electrically connected through the connecting plate 30. In this arrangement, the connecting plate 30 extends along the direction of the first circuit board 10 and the second circuit board 20. The connecting plate 30 can make full use of the gap between the first circuit board 10 and the second circuit board 20, reducing the possibility of occupying a large amount of extra space to realize the electrical connection between the first circuit board 10 and the second circuit board 20, and facilitating the installation of the circuit board structure 100 in the energy meter.

[0047] To make the solution and beneficial effects of this application clearer, this application will be described in detail in conjunction with relevant technologies.

[0048] In related technologies, circuit board structures include multilayer circuit boards. For ease of explanation, based on the stacking direction of the multilayer circuit boards, they are referred to as upper-layer circuit boards and lower-layer circuit boards. The upper-layer circuit board has pins, and the lower-layer circuit board has sockets. Alternatively, the upper-layer circuit board has sockets, and the lower-layer circuit board has pins.

[0049] In this configuration of related technologies, when connecting the upper and lower circuit boards, the pins and sockets need to be correctly aligned, and sufficient space needs to be reserved in the insertion direction of the sockets and pins for the insertion action. This arrangement occupies a significant amount of internal space in the electricity meter, which is detrimental to the circuit board structure and also affects the placement of other components within the electricity meter. Furthermore, the pin arrangement also influences the layout of components on both the upper and lower circuit boards.

[0050] In this embodiment, an electrical connection between the first circuit board 10 and the second circuit board 20 is achieved through a connecting plate 30 disposed on the side of the first circuit board 10 and the second circuit board 20. Thus, the connecting plate 30 can be electrically connected to both the first circuit board 10 and the second circuit board 20. Compared with related technologies, the connecting plate 30 in this application reduces the impact on the arrangement of components on the first circuit board 10 and the second circuit board 20, and also avoids the need for additional sockets and pins. With this configuration, the connecting plate 30 can fully utilize the gap between the first circuit board 10 and the second circuit board 20, effectively reducing the additional space occupied by the connecting plate 30 during the connection process of the electricity meter.

[0051] It should be noted that in this embodiment, the first direction X intersects with the second direction Y. The first direction X is consistent with the stacking direction of the first circuit board 10 and the second circuit board 20. The second direction Y may be parallel to the plane where the first circuit board 10 is located. Generally, the first circuit board 10 has a rectangular structure with two perpendicular length directions, width directions, and thickness directions. The first direction X may be consistent with the thickness direction, that is, the first circuit board 10 and the second circuit board 20 may be stacked in the thickness direction. The second direction Y may be consistent with the length direction, or consistent with the width direction, or intersect with both the length direction and the width direction, etc. The specific direction of the second direction Y is not specifically limited in this embodiment.

[0052] In this application, the first circuit board 10, the second circuit board 20, and the connecting board 30 can all be circuit boards. Specifically, they can be any one of printed circuit boards (PCBs), flexible printed circuit boards (FPCs), or rigid-flex boards, and can be selected according to the actual situation.

[0053] Thus, the first circuit board 10 and the second circuit board 20 can carry the components that ensure the normal operation of the electricity meter. The connecting board 30, being a circuit board, not only enables the electrical connection between the first circuit board 10 and the second circuit board 20, but also serves to carry the components. That is, in this application, some components can also be connected to the connecting board 30, facilitating the layout and connection of the components.

[0054] In some embodiments, such as Figure 1 and Figure 2 As shown, the connecting board 30 may be provided with etched lines 31. One end of the etched lines 31 facing the first circuit board 10 is electrically connected to the first circuit board 10, and the other end of the etched lines 31 facing the second circuit board 20 is electrically connected to the second circuit board 20.

[0055] In this application, the side of the connecting plate 30 facing the first circuit board 10 can be electrically connected to the first circuit board 10, and the side of the connecting plate 30 facing the second circuit board 20 can be electrically connected to the second circuit board 20. Between the side of the connecting plate 30 facing the first circuit board 10 and the side of the connecting plate 30 facing the second circuit board 20, the circuit boards can achieve electrical connection through their own etched lines 31, thus enabling electrical connection between the first circuit board 10 and the second circuit board 20.

[0056] Specifically, the electrical connection between the etched circuit 31 and the first circuit board 10, and the electrical connection between the etched circuit 31 and the second circuit board 20, can be achieved in different ways. For example, the electrical connection can be achieved by directly forming solder joints through welding.

[0057] Specifically, in this application, the etched line 31 and the first circuit board 10 can be electrically connected by soldering. That is, a solder joint can be formed between the etched line 31 and the first circuit board 10 at one end of the etched line 31 near the first circuit board 10. The setting of the solder joint can make electrical contact between the etched line 31 and the first circuit board 10, thereby realizing the electrical connection between the etched line 31 and the first circuit board 10.

[0058] Similarly, the etched line 31 and the second circuit board 20 can also be electrically connected by soldering. That is, a solder joint can be formed between the etched line 31 and the second circuit board 20 at one end of the etched line 31 near the second circuit board 20. The setting of the solder joint can make electrical contact between the etched line 31 and the second circuit board 20, thereby realizing the electrical connection between the etched line 31 and the second circuit board 20.

[0059] Alternatively, conductive adhesive can be used to achieve electrical connection between the etched circuit 31 and the first circuit board 10, and conductive adhesive can also be used to achieve electrical connection between the etched circuit 31 and the second circuit board 20. The specific methods for achieving electrical connection between the etched circuit 31 and the first circuit board 10, and between the etched circuit 31 and the second circuit board 20, are not specifically limited in this embodiment.

[0060] Of course, the way in which the etched line 31 is electrically connected to the first circuit board 10 can be different from the way in which the etched line 31 is electrically connected to the second circuit board 20. For example, the etched line 31 can be soldered to the first circuit board 10, and conductive adhesive can be applied between the etched line 31 and the second circuit board 20, etc.

[0061] When both the first circuit board 10 and the second circuit board 20 are electrically connected to the connecting board 30 by soldering, the first circuit board 10 and the second circuit board 20 can be improved as follows to enhance the electrical connection effect.

[0062] like Figure 1 and Figure 2 As shown, a first wiring structure 11 is provided on the first circuit board 10, and a second wiring structure 21 is provided on the second circuit board 20. An etched line 31 is provided on the connecting board 30. The end of the etched line 31 facing the first circuit board 10 can be soldered to the first wiring structure 11, and the end of the etched line 31 facing the second circuit board 20 can be soldered to the second wiring structure 21.

[0063] With the above configuration, the etched lines 31 on the connecting plate 30 can be soldered to the first wiring structure 11 to achieve electrical connection between the connecting plate 30 and the first circuit board 10. The etched lines 31 on the connecting plate 30 can be soldered to the second wiring structure 21 to achieve electrical connection between the connecting plate 30 and the second circuit board 20.

[0064] In this embodiment, the first wiring structure 11 can be a pad, specifically a circular pad, a square pad, or an elliptical pad, etc. The specific type of the first wiring structure 11 is not specifically limited in this embodiment. Similarly, the second wiring structure 21 can also be different types of pads. The specific type of the second wiring structure 21 will not be elaborated in this embodiment.

[0065] In this embodiment of the application, the arrangement of the first wiring structure 11 and the second wiring structure 21 can improve the strength of the connection between the etched line 31 and the first circuit board 10, improve the mechanical stability between the connecting board 30 and the first circuit board 10, and make the electrical connection more stable.

[0066] In addition, to further improve the stability of the electrical connection, pads can also be provided at both ends of the etched lines 31 on the connecting board 30. In this way, the pads on the side of the etched lines 31 facing the first circuit board 10 can be soldered to the first wiring structure 11, and the pads on the side of the etched lines 31 facing the second circuit board 20 can be soldered to the second wiring structure 21.

[0067] In some embodiments, such as Figure 2 As shown, there can be multiple first wiring structures 11 and multiple second wiring structures 21. The multiple first wiring structures 11 correspond one-to-one with the multiple second wiring structures 21 and are electrically connected through different etched lines 31.

[0068] With the above settings, the first circuit board 10 and the second circuit board 20 can be electrically connected through multiple etched lines 31, which can increase the electrical connection path between the first circuit board 10 and the second circuit board 20, making the signal transmission path between the first circuit board 10 and the second circuit board 20 more, and improving the stability of the electrical connection between the first circuit board 10 and the second circuit board 20.

[0069] It should be noted that the number of the first wiring structure 11 can be 2, 3, 4, or 5, etc. The specific number of the first wiring structure 11 is not specifically limited in this embodiment. The second wiring structure 21 corresponds one-to-one with the first wiring structure 11, and the number of the second wiring structure 21 can be the same as the number of the first wiring structure 11.

[0070] Of course, the specific values ​​of the first wiring structure 11 and the second wiring structure 21 can also be 1. The specific values ​​can be set according to the function to be achieved by the electrical connection between the first circuit board 10 and the second circuit board 20.

[0071] When there are multiple first wiring structures 11 and multiple second wiring structures 21, the multiple first wiring structures 11 can be located on the same straight line, and / or the multiple second wiring structures 21 can be located on the same straight line. This simplifies the process of soldering the first circuit board 10 to the connecting board 30, and / or simplifies the process of soldering the second circuit board 20 to the connecting board 30.

[0072] Specifically, when multiple first wiring structures 11 are located on the same straight line, they are arranged in a straight line. This allows for drag soldering of the multiple first wiring structures 11 to the multiple etched lines 31, enabling the soldering of multiple first wiring structures 11 to be completed in one operation by moving the soldering head. This arrangement simplifies the movement path of the soldering head, improving soldering efficiency and reducing soldering time.

[0073] Similarly, when multiple second wiring structures 21 are located on the same straight line, they are arranged in a straight line. This allows for drag soldering when welding multiple second wiring structures 21 to multiple etched lines 31, enabling the welding of multiple second wiring structures 21 to be completed in one operation by moving the soldering head. This arrangement simplifies the soldering head's movement path, improving welding efficiency and reducing welding time.

[0074] In some embodiments, such as Figure 2 and Figure 3 As shown, a first positioning structure 12 is provided on the first circuit board 10, and a second positioning structure 32 is provided on the connecting plate 30 at a position opposite to the first circuit board 10. The first positioning structure 12 can cooperate with the second positioning structure 32.

[0075] Thus, when setting the connecting plate 30, the first circuit board 10 and the connecting plate 30 can be positioned by the cooperation of the first positioning structure 12 and the second positioning structure 32, so that the connecting plate 30 has a relatively definite position before welding. In this way, the first circuit board 10 itself can play a supporting and positioning role for the connecting plate 30, which can reduce the possibility of additional tooling and thus reduce the investment in designing and producing tooling.

[0076] In this example, the first positioning structure 12 and the second positioning structure 32 have different settings. The following two methods will be used as examples for illustration.

[0077] In one method, the first positioning structure 12 is a positioning groove, and the second positioning structure 32 is a positioning part that can cooperate with the positioning groove. The positioning part can be embedded in the positioning groove.

[0078] At this time, a positioning groove is provided on the first circuit board 10, and a positioning part that can cooperate with the positioning groove is provided on the connecting plate 30. Thus, when setting up the connecting plate 30, the positioning part can be aligned with the positioning groove for installation. The positioning part can be embedded in the positioning groove to cooperate with it, thereby positioning the connecting plate 30. Afterwards, the etched lines 31 can be soldered to the first circuit board 10.

[0079] Method 2, such as Figure 2 and Figure 3 As shown, the first positioning structure 12 can be a positioning part, and the second positioning structure 32 is a positioning groove that can cooperate with the positioning part. The positioning part is embedded in the positioning groove.

[0080] At this time, the positioning part is set on the first circuit board 10, and the connecting plate 30 is provided with a positioning groove that can cooperate with the positioning part. In this way, when setting the connecting plate 30, the positioning groove can be aligned with the positioning part for installation, so that the positioning groove and the positioning part cooperate to achieve positioning of the connecting plate 30. After that, the etched line 31 can be soldered to the first circuit board 10.

[0081] It should be noted that the positioning part can have different structures in both Method 1 and Method 2. Here, we will take the case where the positioning part is located on the connecting plate 30 (i.e., Method 1) as an example. The connecting plate 30 may not have an additional structure for engaging with the positioning groove; a portion of the connecting plate 30 itself may be embedded in the positioning groove. Alternatively, a positioning boss for engaging with the positioning groove may be additionally provided on the connecting plate 30, allowing the connecting plate 30 to be embedded in the positioning groove via the positioning boss.

[0082] The case where the positioning part is located on the first circuit board 10 (i.e., method two) will not be described again here. Please refer to the above description of the case where the positioning part is located on the connecting plate 30.

[0083] In addition to positioning the connecting plate 30 via the first circuit board 10, as described above, the connecting plate 30 can also be positioned via the second circuit board 20. Specifically, the second circuit board 20 is provided with a third positioning structure 22, and the connecting plate 30 is provided with a fourth positioning structure 33 at a position opposite to the second circuit board 20. The third positioning structure 22 can cooperate with the fourth positioning structure 33, such as... Figure 2 and Figure 3 As shown.

[0084] Thus, when setting up the connecting plate 30, the second circuit board 20 and the connecting plate 30 can be positioned by the cooperation of the third positioning structure 22 and the fourth positioning structure 33, so that the connecting plate 30 has a relatively definite position before welding. In this way, the second circuit board 20 itself can play a supporting and positioning role for the connecting plate 30, which can reduce the possibility of setting up additional tooling, thereby reducing the investment in design and production tooling.

[0085] In this example, the third positioning structure 22 and the fourth positioning structure 33 also have different configurations similar to those in Method 1 and Method 2 described above. Specifically, the third positioning structure 22 is one of a positioning groove and a positioning part, and the fourth positioning structure 33 is the other of a positioning groove and a positioning part. The specific configurations of the third positioning structure 22 and the fourth positioning structure 33 will not be repeated here; please refer to the foregoing description of the first positioning structure 12 and the second positioning structure 32.

[0086] Alternatively, as a preferred embodiment, the first circuit board 10 may be provided with a first positioning structure 12, and the second circuit board 20 may be provided with a third positioning structure 22. In this case, the connecting plate 30 may be provided with a second positioning structure 32 and a fourth positioning structure 33. Thus, both the first circuit board 10 and the second circuit board 20 provide support and positioning for the connecting plate 30, thereby improving the stability of the connecting plate 30 during the welding process.

[0087] It should be noted that, in this embodiment, there can be multiple first positioning structures 12 and second positioning structures 32 that cooperate with each other, and there can also be multiple third positioning structures 22 and fourth positioning structures 33 that cooperate with each other. In this way, the first circuit board 10 and the second circuit board 20 provide better support and positioning for the connecting board 30.

[0088] In some embodiments, such as Figure 1 As shown, the circuit board structure 100 may further include a third circuit board 40, which is located on the side of the second circuit board 20 opposite to the first circuit board 10 and is spaced apart from the second circuit board 20. The connecting board 30 is also electrically connected to the third circuit board 40.

[0089] In this embodiment, the circuit board structure 100 includes a third circuit board 40. Similar to the first circuit board 10 and the second circuit board 20, the third circuit board 40 may also be provided with components for ensuring the operation of the electricity meter. The third circuit board 40 may be located on the side of the second circuit board 20 opposite to the first circuit board 10. Since the third circuit board 40 and the second circuit board 20 are spaced apart, the possibility of mutual interference between the components on the third circuit board 40 and the components on the second circuit board 20 can be reduced.

[0090] Since the connecting plate 30 is electrically connected to the third circuit board 40, the third circuit board 40 can be electrically connected to the first circuit board 10 and / or to the second circuit board 20 through the connecting plate 30, so that the third circuit board 40 can transmit signals with other structures in the circuit board structure 100, thereby realizing the coordination of the first circuit board 10, the second circuit board 20 and the third circuit board 40 to perform various functions of the energy meter.

[0091] Specifically, the third circuit board 40 can be electrically connected to the first circuit board 10 via the connecting plate 30, and / or the third circuit board 40 can be electrically connected to the second circuit board 20 via the connecting plate 30. The specific configuration can be adjusted according to actual connection requirements.

[0092] In a preferred embodiment, the third circuit board 40 can also be stacked with the second circuit board 20, which can reduce the space occupied by the circuit board structure 100 in the energy meter. In this way, the first circuit board 10, the second circuit board 20 and the third circuit board 40 are stacked in sequence to form a multi-layer circuit board structure 100.

[0093] It should be noted that the third circuit board 40 can also be any of the following: printed circuit board (PCB), flexible printed circuit board (FPC), or rigid-flex board, and can be selected according to the actual situation.

[0094] In this embodiment, the circuit board structure 100 includes three circuit boards. Based on the position of each circuit board in the first direction X, the first circuit board 10 can constitute the first circuit board layer, the second circuit board 20 can constitute the second circuit board layer, and the third circuit board 40 can constitute the third circuit board layer. In practical applications, different components can be placed on each circuit board layer according to the different functions to be implemented.

[0095] Generally, the first circuit board 10 can be a motherboard or a display board, on which sensors, chips, display modules, etc., can be installed. The second circuit board 20 can be a signal board or an interface board, mainly used for signal routing. The third circuit board 40 can be a power board, on which components are installed to provide power distribution to the various parts. Of course, in practical applications, the above description is not the only applicable method.

[0096] In the case where the circuit board structure 100 also includes a third circuit board 40, the third circuit board 40 can also support and position the connecting board 30 to facilitate the connection between the connecting board 30 and each layer of circuit boards. That is, in this embodiment, the third circuit board 40 can also support and position the connecting board 30, which can improve the support effect on the connecting board 30.

[0097] Specifically, such as Figure 2 and Figure 3 As shown, a limiting groove 51 is provided on the third circuit board 40, and a limiting boss 52 is provided on the connecting plate 30 at a position opposite to the third circuit board 40. The limiting boss 52 can cooperate with the limiting groove 51. In this way, the third circuit board 40 and the connecting plate 30 can be positioned by the cooperation between the limiting boss 52 and the limiting groove 51. Therefore, when installing the connecting plate 30, the limiting boss 52 can be aligned with the limiting groove 51 for installation, and the limiting boss 52 can be embedded in the limiting groove 51 and cooperate with the limiting groove 51.

[0098] Alternatively, a limiting boss 52 may be provided on the third circuit board 40, and a limiting groove 51 may be provided on the connecting plate 30 at a position opposite to the third circuit board 40. The limiting boss 52 may engage with the limiting groove 51. In this way, when installing the connecting plate 30, the limiting groove 51 may be aligned with the limiting boss 52 for installation, and the limiting boss 52 may be embedded in and engage with the limiting groove 51.

[0099] In summary, in this embodiment of the application, the first circuit board 10 and the second circuit board 20 can be electrically connected through a connecting plate 30. In this arrangement, the connecting plate 30 extends along the direction of the first circuit board 10 and the second circuit board 20. The connecting plate 30 can make full use of the gap between the first circuit board 10 and the second circuit board 20, reducing the possibility of occupying a large amount of extra space to achieve the electrical connection between the first circuit board 10 and the second circuit board 20, and facilitating the installation of the circuit board structure 100 in the energy meter.

[0100] Finally, it should be noted that the above embodiments are merely specific implementations of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A wiring board structure having a first direction and a second direction which intersect, characterized by, The circuit board structure comprises: a first circuit board; a second circuit board, which is stacked with the first circuit board along the first direction and has a gap between the second circuit board and the first circuit board; a connecting plate, which is located on one side of the first circuit board in the second direction, and the first circuit board and the second circuit board are opposite to the connecting plate, and the first circuit board and the second circuit board are electrically connected to the connecting plate respectively.

2. The wiring board structure according to claim 1, wherein The connecting plate is provided with etched lines, one end of the etched lines towards the first circuit board is electrically connected to the first circuit board, and the other end of the etched lines towards the second circuit board is electrically connected to the second circuit board.

3. The wiring board structure according to claim 1, wherein The first circuit board is provided with a first wiring structure, and the second circuit board is provided with a second wiring structure; The connecting plate is provided with etched lines, one end of the etched lines towards the first circuit board is welded to the first wiring structure, and the other end of the etched lines towards the second circuit board is welded to the second wiring structure.

4. The wiring board structure according to claim 3, wherein The number of the first wiring structure and the second wiring structure is multiple, and the multiple first wiring structures and the multiple second wiring structures are one-to-one corresponding and electrically connected through different etched lines.

5. The wiring board structure according to claim 4, wherein The multiple first wiring structures are located on the same straight line, and / or the multiple second wiring structures are located on the same straight line.

6. The wiring board structure according to claim 1, wherein The first circuit board is provided with a first positioning structure, and the connecting plate is provided with a second positioning structure at a position opposite to the first circuit board, and the first positioning structure cooperates with the second positioning structure; And / or, the second circuit board is provided with a third positioning structure, and the connecting plate is provided with a fourth positioning structure at a position opposite to the second circuit board, and the third positioning structure cooperates with the fourth positioning structure.

7. The wiring board structure according to claim 6, wherein In the case that the circuit board structure comprises the first positioning structure and the second positioning structure, the first positioning structure is one of a positioning groove and a positioning part, and the second positioning structure is the other one of the positioning groove and the positioning part; In the case that the circuit board structure comprises the third positioning structure and the fourth positioning structure, the third positioning structure is one of a positioning groove and a positioning part, and the fourth positioning structure is the other one of the positioning groove and the positioning part; Wherein, the positioning part is embedded in the positioning groove.

8. The wiring board structure according to claim 1, wherein The circuit board structure further comprises a third circuit board, which is located on a side of the second circuit board away from the first circuit board and is spaced apart from the second circuit board; The connecting plate is also electrically connected to the third circuit board.

9. The wiring board structure according to claim 8, wherein The third circuit board is provided with a limiting recess, and the connecting plate is provided with a limiting boss at a position opposite to the third circuit board, and the limiting boss cooperates with the limiting recess; Or, the third circuit board is provided with a limiting boss, and the connecting plate is provided with a limiting recess at a position opposite to the third circuit board, and the limiting boss cooperates with the limiting recess.

10. An electric energy meter, characterized by The electric energy meter comprises the circuit board structure of any one of claims 1-9.

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