Direct current electric energy meter

Abstract

The utility model relates to the technical field of electric energy meters, and discloses a direct-current electric energy meter, which comprises a shell with an accommodating space inside; the electronic element is arranged in the accommodating space in the shell; the two ends of the shunt are suitable for being connected with external wires; a part of the shunt is located in the shell and is suitable for being connected with the electronic element; at least one temperature measuring module; the temperature measuring module is suitable for being connected with the electronic element, the temperature measuring module is suitable for being connected with the shunt, and the temperature measuring module is suitable for monitoring the temperature of the shunt. According to the scheme, the temperature of the shunt can be monitored in real time by adding the temperature measurement module, and in a limited space in the meter, the basic function requirements of the electric energy meter are realized, and the terminal temperature measurement function is also realized.

Description

Technical Field

[0001] This utility model relates to the field of electricity meter technology, specifically to a DC electricity meter. Background Technology

[0002] With the increasing driving range of electric vehicles and the development of charging technology, DC smart energy meters are mainly used inside DC charging piles for DC-side energy metering and monitoring during DC charging. Currently, the small size of DC energy meters hinders further expansion of their functions. Furthermore, the compact internal assembly increases the difficulty of hardware design and layout, resulting in higher costs and impacting the stability and reliability of product performance.

[0003] This utility model provides a DC energy meter that, within a limited internal space, not only fulfills the basic functional requirements of existing energy meters but also features terminal temperature measurement and physical buttons for page-turning display, among other extended functions that enhance customer safety and convenience. Furthermore, the product's ingenious internal design maximizes the use of internal space to increase the size of the hardware board, ensuring convenient and stable assembly of components and improving production efficiency. Utility Model Content

[0004] In view of this, the present invention provides a DC power meter to solve the problem that power meters cannot measure temperature.

[0005] In a first aspect, this utility model provides a DC power meter, comprising:

[0006] The shell has internal storage space;

[0007] Electronic components are disposed within the housing;

[0008] A shunt, with its two ends adapted to be connected to external wires; a portion of the shunt is located inside the housing and adapted to be connected to the electronic components;

[0009] At least one temperature measuring module is provided; the temperature measuring module is adapted to be connected to the electronic component, the temperature measuring module is adapted to be connected to the shunt, and the temperature measuring module is adapted to monitor the temperature of the shunt.

[0010] In this solution, by adding a temperature measurement module, the temperature on the shunt can be monitored in real time. Within the limited space inside the meter, it not only meets the basic functional requirements of the existing electricity meter, but also has the terminal temperature measurement function.

[0011] In one optional embodiment, the electronic component includes: a first circuit board group and a second circuit board group, the first circuit board group and the second circuit board group being respectively disposed within the receiving space; the first circuit board group and the second circuit board group are electrically connected; the first circuit board group includes:

[0012] The upper circuit board is disposed within the receiving space;

[0013] The right circuit board is disposed within the receiving space and is perpendicular to the upper circuit board;

[0014] The second circuit board assembly includes:

[0015] A lower circuit board is disposed within the receiving space, and the lower circuit board is arranged parallel to the upper circuit board; the lower circuit board is adapted to be electrically connected to the upper circuit board.

[0016] The left circuit board is disposed within the receiving space and is perpendicular to the lower circuit board.

[0017] In one optional embodiment, the temperature measuring module includes a temperature measuring chip and a heat-conducting block. The temperature measuring chip is disposed on the lower circuit board. One end of the heat-conducting block is connected to the temperature measuring chip, and the other end is connected to the shunt. The heat-conducting block is adapted to transfer heat from the shunt to the temperature measuring chip, and the temperature measuring chip detects the temperature of the shunt through the heat-conducting block.

[0018] In one alternative implementation, it further includes:

[0019] A physical button, one end of which is adapted to connect to the upper circuit board, and the other end of which is adapted to extend out of the housing; the physical button is adapted to control the upper circuit board.

[0020] This solution adds physical buttons to enable interaction with electronic components, such as page turning and display, thus enhancing the customer experience.

[0021] In one optional embodiment, the housing includes an upper housing, a lower housing, and a bottom cover, wherein the lower housing is detachably connected to the upper housing; a receiving space is formed between the upper housing and the lower housing, and the bottom cover is detachably connected to the side of the lower housing away from the upper housing, wherein a receiving through hole is formed between the bottom cover and the lower housing; the receiving through hole is adapted to receive the distributor.

[0022] In one alternative implementation, it further includes:

[0023] A partition is disposed between the first circuit board group and the second circuit board group.

[0024] In this solution, a partition plate is added between the first circuit board group and the second circuit board group to separate them, thereby increasing the insulation and isolation effect between the first circuit board group and the second circuit board group.

[0025] In one alternative implementation, it further includes:

[0026] A separator is disposed between the lower circuit board and the shunt.

[0027] In this solution, a separator is placed between the lower circuit board and the shunt to separate them, thereby increasing the insulation effect between them.

[0028] In one alternative implementation, it further includes:

[0029] A transparent cover is fitted over the outside of the housing, and the transparent cover has a button through hole suitable for the physical button to pass through.

[0030] In this solution, the overall dustproof effect is further enhanced by setting up a transparent cover.

[0031] In one alternative implementation, it further includes:

[0032] The system includes at least one cable tray structure, which is disposed on one side of the upper housing; the cable tray structure is suitable for fixing electrical wires. By providing the cable tray structure, fixing electrical wires is facilitated, increasing convenience.

[0033] In one alternative embodiment, one end of the groove structure is shaped like a curved umbrella hook. Attached Figure Description

[0034] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1 This is an exploded view of a DC power meter according to an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of the upper circuit board of a DC energy meter according to an embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of the lower casing of a DC energy meter according to an embodiment of the present utility model;

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Housing; 101. Upper housing; 102. Lower housing; 103. Bottom cover; 2. Electronic components; 201. First circuit board group; 202. Second circuit board group; 2011. Upper circuit board; 2012. Right circuit board; 2021. Lower circuit board; 2022. Left circuit board; 3. Shunt; 301. Solder pin; 4. Temperature measuring module; 401. Heat-conducting block; 5. Physical button; 6. Divider plate; 7. Divider sheet; 8. Transparent cover; 9. Cable tray structure; Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0041] like Figure 1 As shown, according to an embodiment of the present invention, a DC energy meter is provided, comprising:

[0042] Shell 1, with internal storage space;

[0043] Electronic component 2 is disposed in the receiving space inside the housing 1;

[0044] The shunt 3 has two ends adapted to be connected to external wires; a portion of the shunt 3 is located inside the housing 1 and is adapted to be connected to the electronic component 2;

[0045] At least one temperature measuring module 4 is provided; the temperature measuring module 4 is adapted to be connected to the electronic component 2, the temperature measuring module 4 is adapted to be connected to the shunt 3, and the temperature measuring module 4 is adapted to monitor the temperature of the shunt 3.

[0046] In this solution, by adding a temperature measurement module 4, the temperature on the shunt 3 can be monitored in real time. Within the limited space inside the meter, it not only meets the basic functional requirements of the existing electricity meter, but also has a terminal temperature measurement function.

[0047] It should be noted that there is one temperature measuring module 4 in this solution, and it is set at the end of the shunt 3 near the input current. In this solution, the temperature measuring module 4 mainly measures the temperature at the input end of the shunt 3. The number of temperature measuring modules 4 can be increased according to actual needs, so as to detect different positions of the shunt 3. The position of the temperature measuring module 4 on the shunt 3 can also be adjusted according to actual needs.

[0048] Furthermore, the electronic component 2 includes: a first circuit board group 201 and a second circuit board group 202, the first circuit board group 201 and the second circuit board group 202 being respectively disposed within the receiving space; the first circuit board group 201 and the second circuit board group 202 are electrically connected; the first circuit board group 201 includes: an upper circuit board 2011 disposed within the receiving space; a right circuit board 2012 disposed within the receiving space and perpendicular to the upper circuit board 2011; the second circuit board group 202 includes: a lower circuit board 2021 disposed within the receiving space, the lower circuit board 2021 being parallel to the upper circuit board 2011; the lower circuit board 2021 being adapted to be electrically connected to the upper circuit board 2011; and a left circuit board 2022 disposed within the receiving space and perpendicular to the lower circuit board 2021.

[0049] It should be noted that the shunt 3 is made of conductive material, specifically copper plate. In order to facilitate the electrical connection between the shunt 3 and the lower circuit board 2021, a soldering pin 301 is also provided on the shunt 3. The soldering pin 301 passes through the through hole provided on the lower housing 102 and is then soldered to the lower circuit board 2021 to achieve a reliable electrical connection.

[0050] It should be noted that the second circuit board assembly 202 also includes a terminal block, which is fixed on the lower circuit board 2021 and is also adapted to be electrically connected to the lower circuit board 2021. The lower circuit board 2021 uses the terminal block to detect external voltage.

[0051] like Figure 2 As shown, it should be noted that the vertical and horizontal directions in this design are based on the cross-section of the overall structure. The upper circuit board 2011 and right circuit board 2012 form a "7" shape, while the lower circuit board 2021 and left circuit board 2022 form an "L" shape. This combination of the "7" and "L" shapes maximizes the use of the available space and improves its utilization rate. The upper circuit board 2011 and right circuit board 2012 are fixedly connected by a plug-in connection. The upper circuit board 2011 has a pre-drilled hole, and the end of the right circuit board 2012 has a protrusion that engages with the hole for connection. The upper circuit board 2011 and right circuit board 2012 are electrically connected via wires or other structural components. The connection between the lower circuit board 2021 and left circuit board 2022 is the same as that between the upper circuit board 2011 and right circuit board 2012.

[0052] Furthermore, the temperature measuring module 4 includes a temperature measuring chip and a heat-conducting block 401. The temperature measuring chip is disposed on the lower circuit board 2021. One end of the heat-conducting block 401 is connected to the temperature measuring chip, and the other end is connected to the shunt 3. The heat-conducting block 401 is adapted to transfer the heat on the shunt 3 to the temperature measuring chip, and the temperature measuring chip detects the temperature of the shunt 3 through the heat-conducting block 401.

[0053] It should be noted that the heat-conducting block 401 should be made of insulating material to prevent leakage. In this design, the heat-conducting block 401 is a square block, but its shape can be changed according to actual needs. To facilitate the connection between the heat-conducting block 401 and the temperature sensing chip, a square through-hole is provided at a corresponding position on the lower circuit board 2021, allowing the heat-conducting block 401 to pass through. One end of the heat-conducting block 401 is bonded to the shunt 3, and the other end abuts against the temperature sensing chip. The temperature sensing chip indirectly monitors the temperature of the shunt 3 through the heat-conducting block 401. It should be noted that the heat-conducting block 401 is made of a thermally conductive and insulating material, such as silicone or alumina. The temperatures at both ends of the heat-conducting block 401 are essentially the same, thus ensuring the accuracy of the temperature measurement by the temperature sensing chip.

[0054] Furthermore, a physical button 5 is included, one end of which is adapted to connect to the upper circuit board 2011, and the other end is adapted to extend out of the housing 1; the physical button 5 is adapted to control the upper circuit board 2011. In this solution, by adding the physical button 5, interaction with the electronic component 2 can be achieved, such as page turning and display, enhancing the customer experience. It should be noted that one end of the physical button 5 is adapted to be electrically connected to the upper circuit board 2011, and the other end extends out of the housing 1 for easy pressing by the user. During the user's pressing, the physical button 5 contacts the upper circuit board 2011, thereby enabling interaction between the user and the upper circuit board 2011.

[0055] It should be noted that the upper circuit board 2011 also has structures such as an LCD display.

[0056] like Figure 3 As shown, the housing 1 further includes an upper housing 101, a lower housing 102, and a bottom cover 103. The lower housing 102 is detachably connected to the upper housing 101. An accommodating space is formed between the upper housing 101 and the lower housing 102. The bottom cover 103 is detachably connected to the side of the lower housing 102 away from the upper housing 101. An accommodating through hole is formed between the bottom cover 103 and the lower housing 102. The accommodating through hole is adapted to accommodate the distributor 3.

[0057] It should be noted that the lower housing 102 has a groove on the side away from the upper housing 101, and the bottom cover 103 also has a groove on the side close to the lower housing 102. The groove on the lower housing 102 corresponds to the groove on the bottom cover 103 and forms a receiving through hole. The distributor 3 is fixed to the bottom cover 103 by bolts.

[0058] It should be noted that the lower housing 102 and the bottom cover 103 are fixedly connected by bolts, and the upper housing 101 and the lower housing 102 are detachably connected by sealing screws and housing 1 seal. The sealing screws are common screw structures. The housing 1 seal is used to seal the sealing screws after they are installed. In this design, the housing 1 seal is a round cover. In actual use, the design of the housing 1 seal can ensure that the device cannot be disassembled by the sealing screws without authorization, thereby protecting the internal structure.

[0059] It should be noted that a sealing screw and a housing 1 seal are also provided between the bottom cover 103 and the lower housing 102. The sealing screw passes through the distributor 3 to fix the four corners of the bottom cover 103 to the lower housing 102.

[0060] It should be noted that, in order to facilitate the observation and operation of the electricity meter, the upper housing 101 is provided with buttons corresponding to the upper circuit board 2011 and an observation window for easy observation of the screen.

[0061] Furthermore, a separator 6 is also included, disposed between the first circuit board group 201 and the second circuit board group 202. In this solution, by adding a separator 6 between the first circuit board group 201 and the second circuit board group 202, the first circuit board group 201 and the second circuit board group 202 are separated, thereby increasing the insulation isolation effect between the first circuit board group 201 and the second circuit board group 202.

[0062] It should be noted that the shape of the partition plate 6 can be adjusted according to implementation needs. In this solution, the partition plate 6 is a two-section type. To ensure the electrical connection between the upper circuit board 2011 and the lower circuit board 2021, a through hole for the insertion device is provided on the partition plate 6. The upper circuit board 2011 and the lower circuit board 2021 are electrically connected through the insertion device. Since the partition plate 6 separates the structures except for the insertion device, the safety of the electrical connection is increased, and the insulation effect is enhanced. It should be noted that the insertion device passes through the lower circuit board 2021 and connects to the shunt 3. A through hole suitable for the insertion device to pass through is also provided on the lower housing 102, and a mounting groove is also provided at the through hole of the lower housing 102 for installing other structures connected to the shunt 3. The insertion device is suitable for penetrating the lower housing 102. The partition plate 7 is placed on the mounting groove, thereby separating the shunt 3 and the lower circuit board 2021 through the partition plate 7.

[0063] It should be noted that the right circuit board 2012 is provided with a mounting through hole, and is fixed in the right side of the partition plate 6 by means of a positioning post and a fixing hook. The upper circuit board 2011 is located on the upper side of the partition plate 6.

[0064] Furthermore, it also includes a separator 7, disposed between the lower circuit board 2021 and the shunt 3.

[0065] In this solution, a separator 7 is provided between the lower circuit board 2021 and the shunt 3 to separate the lower circuit board 2021 and the shunt 3, thereby increasing the insulation effect between the lower circuit board 2021 and the shunt 3.

[0066] It should be noted that the splitter 3 is fixed to the lower housing 102 with screws. The heat-conducting block 401 is passed through the mounting square through hole of the lower housing 102 and then fitted onto the corresponding position of the splitter 3. At the same time, the isolation plate is installed into the mounting groove of the lower housing 102, and the assembly of the lower circuit board 2021 and the left circuit board 2022 is then installed into the lower housing 102. The connectors and solder pins 301 on the splitter 3 pass through the through holes provided on the lower housing 102 and are then soldered onto the lower circuit board 2021 to achieve a reliable electrical connection. The isolation plate improves the anti-interference capability and electrical insulation protection.

[0067] It should be noted that both the partition plate 6 and the partition piece 7 are made of insulating materials, such as plastic.

[0068] Furthermore, a transparent cover 8 is included, fitted over the outside of the housing 1. The transparent cover 8 has a through-hole for the physical button 5 to pass through. In this design, the transparent cover 8 further enhances the overall dustproof effect. It should be noted that, for ease of operation, a through-hole for the physical button 5 is provided on the transparent cover 8. Furthermore, for convenient subsequent maintenance, the transparent cover 8 is detachably connected to the housing 1 via bolts. To enhance anti-counterfeiting measures, sealing screws and a seal on the housing 1 can be added. This double sealing provides greater safety and reliability, effectively preventing the electricity meter from being illegally opened or tampered with.

[0069] It should be noted that, in order to increase convenience, four wiring grooves are provided on both sides of the transparent cover 8 corresponding to the wiring positions of the housing 101, so that the wires can pass through.

[0070] Furthermore, it also includes a wire trough structure 9, at least one of which is disposed on one side of the upper housing 101; the wire trough structure 9 is adapted to fix the wire. By providing the wire trough structure 9, it is easier to fix the wire and the convenience is increased. In this solution, there are four wire trough structures 9, which are respectively disposed at the four corners of the upper housing 101.

[0071] Furthermore, one end of the wire trough structure 9 is shaped like a bent umbrella hook. During the process of fixing the wire, the wire is passed through the inside of the bent hook end of the wire trough structure 9, thereby limiting the position of the wire and increasing its aesthetic appeal.

[0072] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A DC energy meter, characterized in that, include: The shell (1) has an internal storage space; Electronic component (2) disposed in the housing (1) within the receiving space; A shunt (3) has two ends adapted to be connected to external wires; part of the shunt (3) is located inside the housing (1) and adapted to be connected to the electronic component (2); Temperature measuring module (4), at least one; the temperature measuring module (4) is adapted to be connected to the electronic component (2), the temperature measuring module (4) is adapted to be connected to the shunt (3), and the temperature measuring module (4) is adapted to monitor the temperature of the shunt (3).

2. The DC energy meter according to claim 1, characterized in that, The electronic component (2) includes: a first circuit board assembly (201) and a second circuit board assembly (202), wherein the first circuit board assembly (201) and the second circuit board assembly (202) are respectively disposed within the accommodating space; the first circuit board assembly (201) and the second circuit board assembly (202) are electrically connected; the first circuit board assembly (201) includes: The upper circuit board (2011) is disposed within the receiving space; The right circuit board (2012) is disposed within the receiving space and is perpendicular to the upper circuit board (2011); The second circuit board assembly (202) includes: A lower circuit board (2021) is disposed within the receiving space, and the lower circuit board (2021) is disposed parallel to the upper circuit board (2011); the lower circuit board (2021) is adapted to be electrically connected to the upper circuit board (2011); The left circuit board (2022) is disposed within the receiving space and is perpendicular to the lower circuit board (2021).

3. The DC energy meter according to claim 2, characterized in that, The temperature measuring module (4) includes a temperature measuring chip and a heat-conducting block (401). The temperature measuring chip is disposed on the lower circuit board (2021). One end of the heat-conducting block (401) is connected to the temperature measuring chip, and the other end is connected to the shunt (3). The heat-conducting block (401) is adapted to transfer the heat on the shunt (3) to the temperature measuring chip. The temperature measuring chip detects the temperature of the shunt (3) through the heat-conducting block (401).

4. The DC energy meter according to claim 2, characterized in that, Also includes: A physical button (5) has one end adapted to be connected to the upper circuit board (2011) and the other end adapted to extend out of the housing (1); The physical button (5) is adapted to control the upper circuit board (2011).

5. The DC energy meter according to claim 2, characterized in that, The housing (1) includes an upper housing (101), a lower housing (102), and a bottom cover (103). The lower housing (102) is detachably connected to the upper housing (101). An accommodating space is formed between the upper housing (101) and the lower housing (102). The bottom cover (103) is detachably connected to the side of the lower housing (102) away from the upper housing (101). An accommodating through hole is formed between the bottom cover (103) and the lower housing (102). The accommodating through hole is adapted to accommodate the distributor (3).

6. The DC energy meter according to claim 2, characterized in that, Also includes: A partition plate (6) is disposed between the first circuit board group (201) and the second circuit board group (202).

7. The DC energy meter according to claim 2, characterized in that, Also includes: A separator (7) is disposed between the lower circuit board (2021) and the shunt (3).

8. The DC energy meter according to claim 4, characterized in that, Also includes: A transparent cover (8) is fitted over the outside of the housing (1), and the transparent cover (8) has a button through hole suitable for the physical button (5) to pass through.

9. The DC energy meter according to claim 5, characterized in that, Also includes: At least one wire groove structure (9) is provided on one side of the upper housing (101); the wire groove structure (9) is adapted to fix wires.

10. The DC energy meter according to claim 9, characterized in that, One end of the groove structure (9) is shaped like a curved umbrella hook.

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