Circuit board assembly and electric energy meter

Abstract

The utility model discloses a circuit board assembly and an electric energy meter. The circuit board assembly is used for the electric energy meter. The electric energy meter is provided with a terminal, and the circuit board assembly comprises a main board, a temperature measuring board and an electric connecting piece. The temperature measuring plate is arranged on one side, facing the terminal, of the mainboard and is spaced from the mainboard. The electric connecting piece is at least partially located between the mainboard and the temperature measuring plate, one end of the electric connecting piece is connected with the mainboard, and the other end is connected with the temperature measuring plate. According to the scheme, the temperature measurement distance can be effectively shortened, the sensitivity and stability of temperature transmission are improved, the reliability of temperature measurement is guaranteed, and the temperature change of the terminal can be conveniently monitored in real time.

Description

Technical Field

[0001] This utility model relates to the field of electricity meter technology, and in particular to a circuit board assembly and an electricity meter. Background Technology

[0002] Electricity meters, also known as watt-hour meters or kilowatt-hour meters, are widely used for metering electricity consumption in residential and commercial areas. Currently, smart meter designs and architectures have been in operation for about ten years. With advancements in energy management and technology, as well as increased public awareness of electricity safety, the State Grid's new standards require electricity meters to have terminal temperature measurement functions. This allows the power grid system to monitor and statistically analyze the temperature differences at the meter's terminals in real time during operation. Abnormal data can detect issues such as loose wiring and overheating, enabling early intervention before serious consequences arise and preventing safety hazards such as meter burnout.

[0003] In related technologies, electricity meters include terminals arranged at intervals and a circuit board. The circuit board has a temperature sensor integrated with the circuit board, which measures the temperature of the terminals. In some cases, the circuit board is located on the back side of the terminals (the side of the terminals facing the wall after the electricity meter is mounted), with a small distance between the circuit board and the terminals. However, in newer electricity meters, the circuit board is located on the front side of the terminals (the side of the terminals away from the wall after the electricity meter is mounted), with a larger distance between the circuit board and the terminals. This results in a longer temperature measurement distance, leading to poorer temperature measurement sensitivity and compromising the reliability of temperature measurements. Utility Model Content

[0004] The main purpose of this invention is to provide a circuit board assembly and an energy meter, which aims to solve the technical problem of poor sensitivity in temperature measurement.

[0005] To achieve the above objectives, a first aspect of this utility model provides a circuit board assembly for an electricity meter, the electricity meter having terminals, the circuit board assembly comprising:

[0006] Motherboard;

[0007] A temperature measuring plate is disposed on the side of the main board facing the terminal and spaced apart from the main board;

[0008] An electrical connector is located at least partially between the motherboard and the temperature measuring plate, with one end of the electrical connector connected to the motherboard and the other end connected to the temperature measuring plate.

[0009] In some embodiments, the electrical connector includes a pin header having a first pin segment and a second pin segment connected to each other, the first pin segment passing through the motherboard and being electrically connected to the motherboard, and the second pin segment passing through the temperature measuring plate and being electrically connected to the temperature measuring plate.

[0010] In some embodiments, the circuit board assembly includes a thermally conductive element that abuts against opposite sides of the temperature measuring plate with the electrical connector, and the side of the thermally conductive element facing away from the temperature measuring plate is connected to the terminal.

[0011] A second aspect of this utility model provides an electricity meter, which includes:

[0012] The circuit board assembly described in the above embodiments; and,

[0013] The base assembly includes the terminal.

[0014] In some embodiments, the circuit board assembly includes a thermally conductive element that connects the terminal and the temperature measuring plate, with the terminal connected to the side of the thermally conductive element facing away from the temperature measuring plate;

[0015] The base assembly is provided with a first hook, which engages with the temperature measuring plate so that the temperature measuring plate presses against the heat-conducting component.

[0016] In some embodiments, the temperature measuring plate includes a first plate portion located on its periphery, and the first hook is engaged with the first plate portion;

[0017] And / or,

[0018] The temperature measuring plate is provided with a connection hole, and the first hook is inserted through the connection hole. The temperature measuring plate includes a second plate portion located around the connection hole, and the first hook is engaged with the second plate portion.

[0019] In some embodiments, the energy meter includes a pulse bar assembly, which is at least partially located between the main board and the temperature measuring board, and the electrical connector is arranged through the pulse bar assembly;

[0020] The energy meter includes a base housing that defines a cavity, and the circuit board assembly and the base assembly are at least partially housed in the cavity.

[0021] The inner side of the base shell is provided with a first locking platform, and the pulse strip assembly is provided with a second locking hook. The first locking platform abuts against the second locking hook so that the pulse strip assembly presses against the temperature measuring plate to the heat conducting element.

[0022] In some embodiments, a second locking platform is provided on the inner side of the base shell, and a third locking hook is provided on the base assembly. The second locking platform abuts against the third locking hook so that the first locking hook of the base assembly presses the temperature measuring plate against the heat-conducting component.

[0023] The inner side of the base shell is provided with a first guide rib extending in a first direction, and the outer side of the base assembly is provided with a first groove, through which the first guide rib passes.

[0024] In some embodiments, the inner side of the base shell is provided with a second guide rib extending along a second direction, the outer side of the base assembly is provided with a second groove, the second guide rib passes through the second groove, and the second direction is arranged intersecting the first direction; and

[0025] The second guide rib is integrally connected to the first guide rib; or, the second guide rib is spaced apart from the first guide rib.

[0026] In some embodiments, the temperature measuring plate is provided with a first opening, and the base assembly is provided with a first positioning member on the side facing the temperature measuring plate, the first positioning member passing through the first opening;

[0027] And / or,

[0028] The base assembly is provided with a second opening, and the temperature measuring plate is provided with a second positioning member on the side facing the base assembly, the second positioning member passing through the second opening.

[0029] Compared with the prior art, the beneficial effects of this utility model include:

[0030] In this invention, a circuit board assembly is used in an electricity meter, which has terminals. The circuit board assembly includes a main board, a temperature measuring board, and electrical connectors. In the prior art, the circuit board is equipped with a temperature sensor, i.e., the temperature sensor is integrally connected to the circuit board and is used to measure the temperature of the terminals. In this case, the circuit board is located on the back side of the terminals, with a small distance between the circuit board and the terminals. However, when the circuit board is located on the front side of the terminals, the distance between the circuit board and the terminals is too large, resulting in a longer temperature measurement distance, poorer temperature measurement sensitivity, and inability to guarantee the reliability of temperature measurement. In this solution, the temperature measuring board is located on the side of the main board facing the terminals and is spaced apart from the main board; that is, the distance from the temperature measuring board to the terminals is smaller than the distance from the main board to the terminals. The electrical connector is located at least partially between the motherboard and the temperature measuring board. One end of the electrical connector is connected to the motherboard and the other end is connected to the temperature measuring board, thus enabling data communication between the circuit board and the temperature measuring board. In other words, the temperature measuring board and the motherboard are connected separately. Compared with the solution where the circuit board and the temperature measuring board are connected as one unit, this solution can effectively shorten the temperature measurement distance, improve the sensitivity and stability of temperature transmission, ensure the reliability of temperature measurement, and facilitate real-time monitoring of terminal temperature changes. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of a circuit board assembly according to one embodiment of the present invention; and it shows terminals and heat-conducting components;

[0033] Figure 2 for Figure 1 A partially enlarged schematic diagram at point A; showing the first needle segment, the second needle segment, the first opening, and the connecting hole;

[0034] Figure 3 This is a schematic diagram of an energy meter according to one embodiment of the present invention; wherein, the base shell, the base assembly, and the pulse bar assembly are shown;

[0035] Figure 4 This is an exploded view of an energy meter according to one embodiment of the present invention; wherein, the main board, pin header, pulse bar assembly, temperature measuring plate, heat-conducting component, base assembly, and base shell are shown;

[0036] Figure 5 This is a cross-sectional view of an electricity meter according to an embodiment of the present invention; wherein, a first hook, a second hook, a first mounting plate, a third hook, a second mounting plate, a pressing rib, and a first positioning member are shown;

[0037] Figure 6 This is a partially exploded view of an electricity meter according to one embodiment of the present invention; wherein, the cavity, the first carding platform, the second carding platform, the first guide rib, the second guide rib, and the first groove are shown;

[0038] Figure 7 This is a partially exploded view of an electricity meter according to one embodiment of the present invention; wherein, the first groove, the second groove, and the first guide rib are shown;

[0039] Figure 8 This is a schematic diagram of the temperature measuring plate in one embodiment of the present invention; wherein, a first plate portion, a second plate portion, a transistor, a first opening, and a connecting hole are shown.

[0040] Explanation of icon numbers:

[0041] Electricity meter 1;

[0042] Circuit board assembly 10;

[0043] Motherboard 100;

[0044] Temperature measuring plate 200; First plate section 210; Second plate section 220; First opening 230; Connecting hole 240;

[0045] 250 transistor;

[0046] Electrical connector 300; pin header 310; first pin section 320; second pin section 330;

[0047] Thermal conductive component 400;

[0048] Base assembly 20; terminal 201; first hook 202; third hook 203; first groove 204; second groove 205; first positioning element 206;

[0049] Pulse bar assembly 30; second hook 301; pressure rib 302;

[0050] Base shell 40; cavity 401; first clamping platform 402; second clamping platform 403; first guide rib 404; second guide rib 405;

[0051] First direction X; second direction Y.

[0052] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0053] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0054] The applicant discovered that in existing electricity meters, the circuit board is located on the back side of the terminals, with a relatively close distance (6mm) between the circuit board and the terminals. This allows the temperature sensor to be integrated with the circuit board before temperature measurement. However, in the new electricity meter, the circuit board is located on the front side of the terminals, with a larger distance (21.2mm) between the circuit board and the terminals. If the temperature sensor is integrated with the circuit board, the measurement distance will be greater, resulting in poorer temperature measurement sensitivity and compromising the reliability of temperature measurement.

[0055] In view of this, the first aspect of this utility model provides a circuit board assembly 10, which is used in an energy meter 1 and can effectively improve the reliability of temperature measurement. It is understood that the energy meter 1 has a terminal 201, which is a power connection post of the energy meter 1. Further, the terminal 201 can be a copper post. It is understood that in some embodiments, one end of the terminal 201 is provided with an SCN connector, which facilitates soldering and enables automated production. It should be noted that the energy meter 1 can be provided with multiple terminals 201. This embodiment of the application uses an energy meter 1 with four terminals 201 as an example for explanation. The specific arrangement of the terminals 201 can be determined according to the actual situation. The following refers to... Figures 1 to 8The circuit board assembly 10 of this application embodiment will be introduced. Specifically, the circuit board assembly 10 includes a main board 100, a temperature measuring board 200, and an electrical connector 300.

[0056] Reference Figure 1 The motherboard 100 is a circuit board. The motherboard 100 can control, measure and display electrical energy, and through the coordinated work of the power supply, current detection, voltage detection, calculation and control and display parts, it can achieve accurate measurement and metering of electrical energy. The specific settings of the motherboard 100 can refer to relevant known technologies.

[0057] The temperature measuring plate 200 is used to measure the temperature of terminal 201. The temperature measuring plate 200 can be located on the side of the main board 100 facing terminal 201, as shown in the reference diagram. Figure 1 In terms of orientation, the temperature measuring plate 200 can be positioned between the main board 100 and the terminal 201, meaning the distance from the temperature measuring plate 200 to the terminal 201 is less than the distance from the main board 100 to the terminal 201. The temperature measuring plate 200 and the main board 100 are arranged at intervals, meaning the temperature measuring plate 200 and the main board 100 can be connected separately.

[0058] The relative arrangement of the motherboard 100 and the temperature measuring plate 200 is described below. It can be understood that the thickness direction of the motherboard 100 can be parallel to the thickness direction of the temperature measuring plate 200, that is, the motherboard 100 and the temperature measuring plate 200 can be arranged in parallel. Furthermore, in some embodiments, the temperature measuring plate 200 and the motherboard 100 can be arranged opposite each other at an interval. In other words, viewed along a direction perpendicular to the thickness of the motherboard 100, the temperature measuring plate 200 can completely overlap with the motherboard 100. (Refer to...) Figure 1 and Figure 3 In other embodiments, the temperature measuring plate 200 and the main board 100 can also be arranged at an angle to each other. That is, when viewed along the thickness direction perpendicular to the main board 100, the temperature measuring plate 200 can also overlap with the main board 100 only in part. The embodiments of this application take the arrangement of the temperature measuring plate 200 and the main board 100 at an angle to each other as an example for illustration.

[0059] Reference Figure 2 The electrical connector 300 is used to electrically connect the motherboard 100 and the temperature measuring board 200, enabling data interaction between the motherboard 100 and the temperature measuring board 200. Specifically, the electrical connector 300 is at least partially located between the motherboard 100 and the temperature measuring board 200. In some embodiments, the electrical connector 300 may be only partially located between the motherboard 100 and the temperature measuring board 200. In other embodiments, the electrical connector 300 may be entirely located between the motherboard 100 and the temperature measuring board 200; the specific arrangement may vary depending on the actual situation. One end of the electrical connector 300 is connected to the motherboard 100, and the other end is connected to the temperature measuring board 200. (Refer to...) Figure 2 The upper end of the electrical connector 300 can be connected to the motherboard 100, and the lower end can be connected to the temperature measuring plate 200, thus enabling the connection between the motherboard 100 and the temperature measuring plate 200.

[0060] In the technical solution of this utility model, the circuit board assembly 10 is used in the energy meter 1, which has a terminal 201. The circuit board assembly 10 includes a main board 100, a temperature measuring plate 200, and an electrical connector 300. In the prior art, the circuit board is equipped with a temperature sensor, that is, the temperature sensor is integrally connected to the circuit board and is used to measure the temperature of the terminal. In this case, the circuit board is located on the back side of the terminal, and the distance between the circuit board and the terminal is small. However, when the circuit board is located on the front side of the terminal, the distance between the circuit board and the terminal is too large, which will result in a long temperature measurement distance, resulting in poor temperature measurement sensitivity and inability to guarantee the reliability of temperature measurement. In this solution, the temperature measuring plate 200 is located on the side of the main board 100 facing the terminal 201 and is spaced apart from the main board 100, that is, the distance from the temperature measuring plate 200 to the terminal 201 is smaller than the distance from the main board 100 to the terminal 201. The electrical connector 300 is located at least partially between the main board 100 and the temperature measuring board 200. One end of the electrical connector 300 is connected to the main board 100 and the other end is connected to the temperature measuring board 200. Therefore, data conduction between the circuit board and the temperature measuring board 200 can be realized. That is, the temperature measuring board 200 and the main board 100 are arranged separately. Compared with the solution of the circuit board and the temperature measuring board being connected as one piece, this solution can effectively shorten the temperature measurement distance, improve the sensitivity and stability of temperature transmission, ensure the reliability of temperature measurement, and facilitate real-time monitoring of the temperature change of terminal 201.

[0061] Reference Figure 1 and Figure 2 The specific configuration of the electrical connector 300 is described below. In some embodiments, the electrical connector 300 includes a pin header 310, which can be a single row or multiple rows. The pin header 310 has a first pin segment 320 and a second pin segment 330, which are connected to each other. (Refer to...) Figure 1 In terms of orientation, the first needle segment 320 can be the upper needle segment of the pin header 310, and the second needle segment 330 can be the lower needle segment of the pin header 310. The first needle segment 320 is used for electrical connection to the main board 100, and the second needle segment 330 is used for electrical connection to the temperature measuring plate 200. In some embodiments, the electrical connector 300 can be a wire, which can electrically connect the main board 100 and the temperature measuring plate 200. The specific connection settings between the main board 100 and the temperature measuring plate 200 can be determined according to the actual situation.

[0062] Reference Figure 1 and Figure 2The first pin segment 320 can pass through the motherboard 100 and be electrically connected to it. It should be noted that in some embodiments, the end of the first pin segment 320 facing away from the second pin segment 330 can pass through the motherboard 100, meaning the first pin segment 320 may not completely penetrate the motherboard 100. In other embodiments, the non-end of the first pin segment 320 facing away from the second pin segment 330 can also pass through the motherboard 100, meaning the first pin segment 320 can penetrate the motherboard 100. The specific connection configuration between the first pin segment 320 and the motherboard 100 can be determined according to the actual situation. This application embodiment uses the example of the first pin segment 320 penetrating the motherboard 100 for illustration. It can be understood that the first pin segment 320 can be soldered to the motherboard 100.

[0063] Reference Figure 2 The second needle segment 330 can pass through and connect to the temperature measuring plate 200. In some embodiments, the end of the second needle segment 330 that is away from the first needle segment 320 can pass through the temperature measuring plate 200, that is, the second needle segment 330 may not completely penetrate the main board 100. In other embodiments, the non-end of the second needle segment 330 that is away from the first needle segment 320 can also pass through the temperature measuring plate 200, that is, the second needle segment 330 can penetrate the temperature measuring plate 200. The specific connection configuration can be determined according to the actual situation. This application embodiment uses the second needle segment 330 penetrating the temperature measuring plate 200 as an example for explanation.

[0064] The first pin segment 320 of this design passes through and is electrically connected to the main board 100, and the second pin segment 330 passes through and is electrically connected to the temperature measuring plate 200. That is, the assembly and connection operation of the pin header 310 with the main board 100 and the temperature measuring plate 200 is convenient and quick, and the pin header 310 can support the main board 100 and the temperature measuring plate 200, improve the stability and reliability of the electrical connection between the main board 100 and the temperature measuring plate 200, and thus ensure the stability of temperature measurement.

[0065] Reference Figure 1 , Figures 4 to 6 In some embodiments, the circuit board assembly 10 includes a heat-conducting element 400, which facilitates heat transfer between the terminal 201 and the temperature measuring plate 200, enabling the temperature measuring plate 200 to measure the temperature of the terminal 201. Specifically, the heat-conducting element 400 and the electrical connector 300 abut against opposite sides of the temperature measuring plate 200, as shown in the figure. Figure 5 In this configuration, the heat-conducting component 400 can abut against the lower side of the temperature-sensing plate 200, and the electrical connector 300 can abut against the upper side of the temperature-sensing plate 200. A terminal 201 can be connected to the side of the heat-conducting component 400 facing away from the temperature-sensing plate 200. Specifically, the heat-conducting component 400 can be arranged to fit snugly against the terminal 201. The electrical connector 300 in this design can press the temperature-sensing plate 200 against the heat-conducting component 400, thereby improving the stability of the thermal connection between the heat-conducting component 400 and the terminal 201, and ensuring the reliability of the temperature measurement of the terminal 201 by the temperature-sensing plate 200.

[0066] It should be noted that in some embodiments, the material of the heat-conducting component 400 can be thermally conductive silicone. In other embodiments, the material of the heat-conducting component 400 can also be thermally conductive gel, etc. This application embodiment uses thermally conductive silicone as an example for the description of the heat-conducting component 400. The heat-conducting component 400 of this solution can not only fully conduct the heat of the terminal 201 to the temperature sensor to ensure the accuracy of temperature measurement, but also provide a buffering effect for the temperature measuring plate 200, thereby avoiding direct collision between the temperature measuring plate 200 and the terminal 201, ensuring the stability of temperature measurement, and extending the service life of the circuit board assembly 10.

[0067] A second aspect of this utility model provides an energy meter 1, which includes a circuit board assembly 10 and a base assembly 20 as described in the above embodiments. The base assembly 20 includes terminals 201. In this solution, a temperature measuring plate 200 is disposed on the side of the main board 100 facing the terminals 201 and spaced apart from the main board 100, i.e., the distance from the temperature measuring plate 200 to the terminals 201 is less than the distance from the main board 100 to the terminals 201. An electrical connector 300 is at least partially located between the main board 100 and the temperature measuring plate 200, with one end connected to the main board 100 and the other end connected to the temperature measuring plate 200. This enables data conduction between the circuit board and the temperature measuring plate 200. In other words, the temperature measuring plate 200 and the main board 100 are separately connected. Compared to a solution where the circuit board and the temperature measuring plate are integrated, this solution effectively shortens the distance from the temperature measuring plate 200 to the terminals 201, improves the sensitivity and stability of temperature transmission, ensures the reliability of temperature measurement, and facilitates real-time monitoring of temperature changes at the terminals 201.

[0068] Reference Figure 1 and Figure 2 In some embodiments, the circuit board assembly 10 includes a heat-conducting element 400 for heat transfer between the terminal 201 and the temperature measuring plate 200. The heat-conducting element 400 can connect the terminal 201 and the temperature measuring plate 200. Specifically, the side of the heat-conducting element 400 facing away from the temperature measuring plate 200 can be connected to the terminal 201, as shown in the figure. Figure 1 The lower side of the heat-conducting component 400 can be connected to the terminal 201, and the upper side can be connected to the temperature measuring plate 200. For further explanation, please refer to [reference needed]. Figure 5 and Figure 8The temperature sensing plate 200 can be equipped with a transistor 250, which can contact the heat-conducting component 400 to achieve temperature measurement. When using an NTC thermistor for temperature measurement, the resistance of the NTC is linearly related to temperature, requiring additional circuitry or algorithms for linear processing, increasing system complexity. In high-temperature environments, the resistance change of the NTC may be unstable, and long-term use can easily lead to drift. When the current through the NTC is large, a self-heating effect will occur, affecting the temperature measurement accuracy. NTCs are sensitive to environmental factors such as humidity and dust, which may affect their performance. In short, the NTC-based solution has numerous influencing factors on temperature monitoring, is difficult to design, and requires thermally conductive adhesive in the manufacturing process, making it complex. This solution uses a transistor with a linear temperature relationship, high sensitivity, low cost, easy integration, fast response speed, low power consumption, high reliability, simple calibration, wide temperature range, and strong compatibility. Overall, it improves the sensitivity and stability of terminal temperature measurement, monitoring, and data transmission, thus better protecting the electricity meter and ensuring electrical safety, and guaranteeing the safe and stable operation of the power system.

[0069] Reference Figure 5 The specific assembly configuration of the heat-conducting component 400 is described below. In some embodiments, the base assembly 20 is provided with a first hook 202, which is used to fix the temperature measuring plate 200. Specifically, the first hook 202 can engage the temperature measuring plate 200, thereby causing the temperature measuring plate 200 to press against the heat-conducting component 400, which in turn allows the heat-conducting component 400 to press against the terminal 201, achieving sufficient and effective heat conduction to the terminal 201 and ensuring the accuracy and reliability of temperature measurement. It can be understood that the base assembly 20 can be provided with a cavity and an opening communicating with the cavity, the temperature measuring plate 200 can be accommodated in the cavity, and the first hook 202 can be provided at the end of the base assembly 20 near the opening.

[0070] It should be noted that in some embodiments, when the heat-conducting component 400 is made of thermally conductive silicone or thermally conductive gel, the temperature measuring plate 200 can force the heat-conducting component 400 to elastically contract, thereby shortening the heat conduction distance, effectively improving the heat conduction efficiency, and further improving the accuracy and reliability of temperature measurement.

[0071] Reference Figure 5 and Figure 8 The specific engagement configuration between the first hook 202 and the temperature measuring plate 200 is described below. In some embodiments, the temperature measuring plate 200 includes a first plate portion 210 located on the periphery of the temperature measuring plate 200. The first plate portion 210 can be a single portion or multiple portions on the periphery of the temperature measuring plate 200. The first hook 202 can engage with the first plate portion 210 to ensure that the temperature measuring plate 200 can press tightly against the heat-conducting element 400 to achieve an interference fit. This prevents the temperature measuring plate 200 from detaching from the heat-conducting element 400 during experiments such as vibration, drop, or mechanical impact, avoiding poor contact and improving the stability of temperature measurement.

[0072] Reference Figure 2 , Figure 5 and Figure 8 In some embodiments, the temperature measuring plate 200 may be provided with a connection hole 240, which may be a through hole. A first hook 202 may pass through the connection hole 240. The temperature measuring plate 200 includes a second plate portion 220 located around the connection hole 240. It can be understood that the second plate portion 220 may be a single part of the temperature measuring plate 200 located around the connection hole 240, or it may be multiple parts of the temperature measuring plate 200 located around the connection hole 240. It should be noted that the orientation of the second plate portion 220 may be the same as or different from that of the first plate portion 210. The first hook 202 may engage with the second plate portion 220 to ensure that the temperature measuring plate 200 presses firmly against the heat-conducting element 400, preventing the temperature measuring plate 200 from detaching from the heat-conducting element 400 during experiments such as vibration, drop, or mechanical impact, thus avoiding poor contact and improving the stability of temperature measurement.

[0073] Reference Figure 5 In other embodiments, the base assembly 20 is provided with a plurality of first hooks 202. Some of the first hooks 202 can be hooked onto the first plate portion 210, and other first hooks 202 can pass through the connection hole 240 and be hooked onto the second plate portion 220. The plurality of first hooks 202 in this solution can make the temperature measuring plate 200 press against the heat conducting element 400 evenly, thereby improving the stability of the connection between the temperature measuring plate 200, the heat conducting element 400, and the terminal 201.

[0074] Reference Figures 3 to 7 In some embodiments, the electricity meter 1 includes a pulse bar assembly 30, which converts the electricity consumption into electrical pulse signals and outputs them. These pulse signals can be received and processed by external devices (such as data acquisition systems, smart terminals, etc.) to achieve functions such as electricity metering, remote meter reading, and energy monitoring. The pulse bar assembly 30 is at least partially located between the main board 100 and the temperature measuring board 200; the specific configuration depends on the actual situation. The pulse bar assembly 30 may have through holes through which the electrical connector 300 passes, and is then connected to both the main board 100 and the temperature measuring board 200. That is, the pulse bar assembly 30 can support the periphery of the electrical connector 300, preventing it from tilting or bending under stress, ensuring the stability of the electrical connection between the main board 100 and the temperature measuring board 200, and improving the reliability of temperature measurement.

[0075] Reference Figures 3 to 7The specific assembly configuration of the circuit board assembly 10, the base assembly 20, and the pulse bar assembly 30 is described below. In some embodiments, the energy meter 1 includes a base housing 40, which defines a cavity 401. The circuit board assembly 10 and the base assembly 20 are at least partially housed in the cavity 401. Specifically, in some embodiments, refer to... Figure 5 In terms of orientation, the base assembly 20 can be disposed within the cavity 401 of the base shell 40, the circuit board assembly 10 can be disposed within the base assembly 20, and the pulse bar assembly 30 can also be disposed within the base assembly 20 and located between the main board 100 and the temperature measuring plate 200.

[0076] Reference Figure 5 and Figure 6 In some embodiments, the base shell 40 has a first locking platform 402 on its inner side, and the pulse strip assembly 30 has a second locking hook 301, which can be adapted to the arrangement of the first locking platform 402. The first locking platform 402 can abut against the second locking hook 301, so that the pulse strip assembly 30 presses against the temperature measuring plate 200 against the heat conducting element 400. In other embodiments, the base shell 40 has a second locking hook 301 on its inner side, and the pulse strip assembly 30 has a first locking platform 402, so that the second locking hook 301 can abut against the first locking platform 402, so that the pulse strip assembly 30 presses against the temperature measuring plate 200 against the heat conducting element 400. The specific engagement arrangement of the base shell 40 and the pulse strip assembly 30 can be determined according to the actual situation. In this solution, the cooperation between the second locking hook 301 and the first locking platform 402 can not only improve the stability of the assembly connection between the base shell 40 and the pulse strip assembly 30, but also ensure that the temperature measuring plate 200 and the heat conducting element 400 are tightly fitted, thus ensuring the reliability of temperature measurement.

[0077] It should be noted that in some embodiments, the wall surface of the pulse strip assembly 30 facing the temperature measuring plate 200 can directly abut against the temperature measuring plate 200 and the heat-conducting element 400. (Refer to...) Figure 5 In other embodiments, the wall surface of the pulse strip assembly 30 facing the temperature measuring plate 200 may be provided with a pressure rib 302, which can press against the temperature measuring plate 200 to the heat conducting element 400. This embodiment of the application uses the pulse strip assembly 30 pressing against the temperature measuring plate 200 through the pressure rib 302 as an example. It is understood that the pulse strip assembly 30 may have a single pressure rib 302 or multiple pressure ribs 302. This embodiment of the application uses the pulse strip assembly 30 having multiple pressure ribs 302 as an example, and each pressure rib 302 can be arranged at intervals along the extension direction of the pulse strip assembly 30.

[0078] Reference Figure 5 and Figure 6The specific assembly configuration of the base assembly 20 and the base shell 40 is described below. In some embodiments, a second locking platform 403 may be provided on the inner side of the base shell 40, and a third locking hook 203 may be provided on the base assembly 20. The second locking platform 403 may be adapted to the arrangement of the third locking hook 203. The second locking platform 403 may abut against the third locking hook 203, so that the first locking hook 202 of the base assembly 20 presses against the temperature measuring plate 200 to the heat conducting element 400. In other embodiments, a third locking hook 203 may be provided on the inner side of the base shell 40, and a second locking platform 403 may be provided on the base assembly 20. The second locking platform 403 may abut against the third locking hook 203, so that the first locking hook 202 of the base assembly 20 presses against the temperature measuring plate 200 to the heat conducting element 400. The specific engagement configuration of the base shell 40 and the base assembly 20 may vary depending on the actual situation. The second mounting plate 403 and the third hook 203 of this solution work together to further improve the stability of the assembly connection between the base shell 40 and the base assembly 20, and also make the temperature measuring plate 200 and the heat-conducting component 400 fit tightly together to ensure the reliability of temperature measurement.

[0079] Reference Figure 6 and Figure 7 In some embodiments, a first guide rib 404 is provided on the inner side of the base shell 40. To facilitate the description and understanding of the specific structure of the first guide rib 404, a first direction X is defined, and the first guide rib 404 can extend and be arranged along the first direction X. (Refer to...) Figure 6 The orientation, specifically the first direction X, can point vertically. A first groove 204 is provided on the outer side of the base assembly 20, through which a first guide rib 404 can pass. In other embodiments, the first groove 204 is provided on the inner side of the base shell 40, and the first guide rib 404 is provided on the outer side of the base assembly 20, extending along the first direction X. The specific connection arrangement between the base shell 40 and the base assembly 20 can be determined according to actual conditions. In this solution, the first guide rib 404 cooperates with the first groove 204, which not only improves the assembly connection accuracy between the base shell 40 and the base assembly 20, but also ensures assembly and disassembly efficiency and improves the convenience of assembly and disassembly.

[0080] Reference Figure 6 and Figure 7In some embodiments, a second guide rib 405 is provided on the inner side of the base shell 40. To facilitate description and understanding of the specific structure of the second guide rib 405, a second direction Y is defined, and the second guide rib 405 can extend along the second direction Y. A second groove 205 is provided on the outer side of the base assembly 20, and the second guide rib 405 can pass through the second groove 205. In other embodiments, a second guide rib 405 is provided on the outer side of the base assembly 20, and the second guide rib 405 can extend along the second direction Y. A second groove 205 is provided on the inner side of the base shell 40, and the second guide rib 405 can pass through the second groove 205. The cooperation between the second guide rib 405 and the second groove 205 in this solution can further improve the assembly connection accuracy between the base shell 40 and the base assembly 20, and ensure assembly and disassembly efficiency.

[0081] It should be noted that the second direction Y intersects with the first direction X. Specifically, in some embodiments, the second direction Y can be perpendicular to the first direction X. In other embodiments, the second direction Y can also be at other angles that are not perpendicular to the first direction X. This application uses the example of the second direction Y being perpendicular to the first direction X for illustration, referring to... Figure 6 Orientation, the second direction Y can point to the left or right.

[0082] Reference Figure 6 The relative arrangement of the second guide rib 405 and the first guide rib 404 is described below. In some embodiments, both the second guide rib 405 and the first guide rib 404 are located inside the base shell 40. The second guide rib 405 can be integrally connected to the first guide rib 404. This design ensures the structural strength of the guide ribs and improves the reliability of the connection between the base shell 40 and the base assembly 20. In other embodiments, the second guide rib 405 can also be arranged at intervals from the first guide rib 404. This design improves the assembly connection accuracy between the base shell 40 and the base assembly 20. This application embodiment uses the integral connection arrangement of the first guide rib 404 and the second guide rib 405 as an example for illustration.

[0083] Reference Figure 2 and Figure 8The specific connection configuration between the temperature measuring plate 200 and the base assembly 20 is described below. In some embodiments, the temperature measuring plate 200 may be provided with a first opening 230, and the base assembly 20 may be provided with a first positioning member 206 on the side facing the temperature measuring plate 200. The first positioning member 206 may pass through the first opening 230. In other embodiments, the base assembly 20 may be provided with a second opening, and the temperature measuring plate 200 may be provided with a second positioning member on the side facing the base assembly 200, the second positioning member passing through the second opening. It should be noted that multiple first openings 230 and second openings may be provided, and the number of positioning members may be the same as the number of openings. This application embodiment uses the temperature measuring plate 200 having a first opening 230 and the base assembly 20 having a first positioning member 206 as an example for explanation. The positioning member and opening in this solution cooperate to improve the assembly connection accuracy between the temperature measuring plate 200 and the base assembly 20, thereby ensuring the reliability of temperature measurement.

[0084] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0085] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or," "and / or," or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where A and B are simultaneously satisfied. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0086] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A circuit board assembly for an electric energy meter, said electric energy meter having terminals, characterized in that, The circuit board assembly comprises: a main board; a temperature measuring board arranged on a side of the main board facing the terminal and spaced apart from the main board; an electrical connector at least partially located between the main board and the temperature measuring board, one end of the electrical connector being connected to the main board and the other end being connected to the temperature measuring board.

2. The circuit board assembly according to claim 1, wherein the electrical connector comprises a pin array, the pin array having a first pin segment and a second pin segment connected to each other, the first pin segment penetrating the main board and being electrically connected to the main board, and the second pin segment penetrating the temperature measuring board and being electrically connected to the temperature measuring board.

3. The circuit board assembly according to claim 1, wherein the circuit board assembly comprises a heat conducting member, the heat conducting member being arranged on opposite sides of the temperature measuring board and abutting against the electrical connector, and one side of the heat conducting member away from the temperature measuring board being connected to the terminal.

4. An electric energy meter, characterized by comprises: the circuit board assembly according to any one of claims 1-3; and a base assembly comprising the terminal.

5. The electric energy meter according to claim 4, wherein the circuit board assembly comprises a heat conducting member, the heat conducting member being connected to the terminal and the temperature measuring board, and one side of the heat conducting member away from the temperature measuring board being connected to the terminal; the base assembly is provided with a first clamping hook, the first clamping hook clamping the temperature measuring board so that the temperature measuring board abuts against the heat conducting member.

6. The electric energy meter according to claim 5, wherein the temperature measuring board comprises a first board portion on a peripheral side thereof, and the first clamping hook clamps the first board portion; and / or the temperature measuring board is provided with a connecting hole, the first clamping hook penetrating the connecting hole, the temperature measuring board comprises a second board portion on a peripheral side of the connecting hole, and the first clamping hook clamps the second board portion.

7. The electric energy meter according to claim 5, wherein the electric energy meter comprises a pulse strip assembly, the pulse strip assembly being at least partially located between the main board and the temperature measuring board, and the electrical connector is arranged penetrating the pulse strip assembly; the electric energy meter comprises a base housing, the base housing defining a containing cavity, and the circuit board assembly and the base assembly are at least partially contained in the containing cavity; an inner side of the base housing is provided with a first clamping seat, the pulse strip assembly is provided with a second clamping hook, and the first clamping seat abuts against the second clamping hook so that the pulse strip assembly presses the temperature measuring board against the heat conducting member.

8. The electric energy meter according to claim 7, wherein an inner side of the base housing is provided with a second clamping seat, the base assembly is provided with a third clamping hook, and the second clamping seat abuts against the third clamping hook so that the first clamping hook of the base assembly presses the temperature measuring board against the heat conducting member; the inner side of the base housing is provided with a first guide rib extending in a first direction, and an outer side of the base assembly is provided with a first groove, and the first guide rib penetrates the first groove.

9. The electric energy meter according to claim 8, wherein the inner side of the base housing is provided with a second guide rib extending in a second direction, and an outer side of the base assembly is provided with a second groove, and the second guide rib penetrates the second groove, and the second direction is arranged transversely to the first direction; and ​ ​ The second guide rib is integrally connected with the first guide rib; or, the second guide rib is spaced from the first guide rib.

10. The electric energy meter of claim 5, wherein, The temperature measuring plate is provided with a first opening, and the side of the base assembly facing the temperature measuring plate is provided with a first positioning member, and the first positioning member penetrates the first opening; And / or, The base assembly is provided with a second opening, and the side of the temperature measuring plate facing the base assembly is provided with a second positioning member, and the second positioning member penetrates the second opening.

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