A plug-in mounted electricity metering module

Abstract

The application discloses a plug-in installed electric energy metering module, comprising an upper cover, a side plate and a bottom cover. The upper cover is provided with a pulse indicating lamp, a pull-out indicating lamp and a nameplate recess; the side plate is provided with a firewire inlet port and is connected with a sliding block of the upper cover; and the bottom cover is provided with a same-side firewire outlet port, a bottom pin, double positioning columns and double screw fixing holes. The module is accurately positioned through the positioning columns, is electrically connected through the pin and is mechanically fixed through the screws, so that three reliable connections are formed, the problems of inaccurate positioning, easy loosening, complex assembly and inconvenient maintenance of the existing modular electric meter are solved, the module has the advantages of accurate positioning, firm connection, quick assembly, separation of strong and weak electricity and convenient maintenance and is suitable for the field of intelligent electric energy meters.

Description

[0001] This invention relates to the field of electricity metering equipment technology, and specifically to a plug-in electricity metering module. Background Technology

[0002] With the advancement of smart grid construction, electricity meters are developing towards modularity and maintainability. Traditional integrated electricity meters require complete replacement when partial faults occur, resulting in high maintenance costs and complex operations. Although existing modular electricity meters adopt a plug-in structure, they still have significant drawbacks: insufficient positioning accuracy between the module and the base plate, making plugging and unplugging prone to pin misalignment, bending, or poor contact; the fixing method relies solely on pin friction, which is prone to loosening over long-term use; the casing assembly relies on screws, resulting in low efficiency; and the layout of strong and weak current circuits is unreasonable, leading to insufficient safety and stability. Therefore, there is an urgent need for a plug-in electricity metering module that is accurately positioned, reliably connected, efficiently assembled, and safe and stable. Summary of the Invention

[0003] The technical problem that the invention aims to solve The purpose of this invention is to overcome the shortcomings of the prior art and provide a pluggable electricity metering module, which solves the technical problems of low positioning accuracy, easy loosening of connections, low assembly efficiency, and large interference between strong and weak currents in existing modular electricity meters.

[0004] Technical solution A plug-in energy meter module includes a top cover, a side plate, and a bottom cover. The top cover, located on the top of the module, houses a pulse indicator light and a trip indicator light, with a nameplate mounting groove in the center. The side plate, located on one side of the module, has a live wire inlet port. The side plate and top cover are connected via a slider-slide connection for screwless, quick assembly. The bottom cover, located on the bottom of the module, has a live wire outlet port on the same side as the side plate. The bottom of the bottom cover features pins, two positioning posts, and two screw holes. The positioning posts ensure precise alignment with the bottom plate, preventing pin misalignment; the pins provide electrical and signal connections; and the screw holes provide mechanical locking, forming a reliable triple connection of positioning, insertion, and locking. Furthermore, the pins are a single-row, six-pin gold-plated structure, including communication and power supply pins, with a pin pitch of 3.96mm. Furthermore, the positioning posts are integrally formed with the bottom cover, with guide chamfers at the ends. Furthermore, the screw holes are countersunk holes, accommodating M3 screws. Furthermore, the inlet and outlet ports are screw terminals on the same side, with a rated current of 60A. Furthermore, the module has a built-in circuit control section, including a main control unit, power supply unit, metering unit, data acquisition unit, communication unit, relay unit, and storage unit, realizing the integration of metering, communication, control, and indication.

[0005] Beneficial effects 1. Precise Positioning: Dual positioning posts with guide chamfers ensure accurate insertion and removal, preventing pin bending and poor contact. 2. Dual Fixation: Electrical pin connection + mechanical screw fixation provides shock resistance, prevents loosening, and ensures stable long-term operation. 3. Quick Assembly: Side plate and top cover slider connection allows for screwless quick assembly, improving production efficiency. 4. Compact Structure: Inlet and outlet lines are arranged on the same side, simplifying wiring and saving space. 5. Safe and Reliable: Separate layout for strong and weak current circuits reduces interference and improves safety. 6. Convenient Maintenance: Plug-in installation allows for individual module replacement in case of failure, eliminating the need for complete meter disassembly. Attached Figure Description

[0006] Figure 1 is a schematic diagram of the overall assembly structure of the present invention; The top cover 1, side panels 2, and bottom cover 3 are all made of flame-retardant PC plastic injection molding. Figure 2 is a schematic diagram of the upper cover structure of the present invention; Wherein: 11-Pulse indicator light; 12-Lock-off indicator light; 13-Nameplate mounting groove; 14-Slide groove; Figure 3 is a schematic diagram of the side plate structure of the present invention; Wherein: 21-Fire wire inlet port; 22-Slider; Figure 4 is a schematic diagram of the bottom cover structure; Wherein: 31-Live wire outlet port; 32-Pin; 33-Screw fixing hole; 34-Positioning post. Figure 5 is a block diagram of the circuit structure of the present invention; Wherein: 35-Relay unit; 36-Communication unit; 37-Power supply unit; 38-Main control unit; 39-Acquisition unit; 40-Memory unit; 41-Metering unit; Figure 6 is a circuit schematic diagram of the present invention (power supply, communication, relay); Wherein: 42-Power supply circuit; 43-Relay control circuit; 44-RS485 communication circuit; Figure 7 is a circuit schematic diagram of the present invention (metering, indicator lights, interface); Wherein: 45 - sampling circuit; 46 - storage circuit; 47 - minimum system. Detailed Implementation

[0008] like Figures 1 to 7 As shown, a pluggable electricity metering module includes an upper cover 1, a side plate 2, and a bottom cover 3, all of which are injection molded from flame-retardant PC plastic.

[0009] Top cover Figure 2 The top is equipped with a pulse indicator light-11 and a pull-out indicator light-12, the center has a nameplate mounting groove-13, and the side has a sliding groove-14.

[0010] Side panel Figure 3 Set up a live wire inlet port-21, and a slider-22 on the back. The slider-22 slides into the groove-14 to achieve screwless assembly.

[0011] bottom cover Figure 4 The live wire outlet port is set at -31, and the bottom has -6 gold-plated pins -32, two positioning posts -34, and two countersunk screw fixing holes -33.

[0012] power supply Figure 6 Pin 32 definition: 1: +12V; 2: GND; 3: 485_A; 4: 485_B; 5: MC+; 6: MC-.

[0013] Circuit section Figure 7 The power supply unit draws power from the live wire, and outputs +12V and +3.3V after resistor-capacitor voltage reduction and regulation; the metering unit collects voltage and current signals and outputs metering pulses; the main control unit receives pulses and communication commands to control relays and indicator lights; the RS485 communication unit realizes data interaction with the base plate through pins; the relay unit uses an H-bridge to drive magnetic latching relays to realize remote switching.

[0014] Installation steps: The side panel slider slides into the upper cover groove to complete the pre-installation; The bottom cover is snapped together with the top cover and side panels; The positioning pin is aligned with the positioning hole on the base plate and pressed down vertically until the pin is fully inserted. Secure the module by passing an M3 screw through the screw fixing hole; Connect the incoming and outgoing live wires to complete the installation; During maintenance, simply loosen the screws to pull the module upwards; no wiring is required, making replacement highly efficient.

Claims

1. A pluggable electricity metering module, characterized in that, It includes a top cover, side panels, and a bottom cover; the top cover is equipped with a pulse indicator light, a trip indicator light, and a nameplate mounting groove; the side panel is equipped with a live wire inlet port, and the side panel and the top cover are slidably connected by a slider and a sliding groove; the bottom cover is equipped with a live wire outlet port on the same side as the side panel, and the bottom of the bottom cover is equipped with a pin, two positioning posts, and two screw fixing holes; the positioning posts are used to cooperate with the positioning holes of the bottom plate to achieve precise alignment, the pin is used for electrical connection, and the screw fixing holes are used for mechanical fixation, forming a triple connection structure of positioning, insertion, and locking.

2. The plug-in installed energy meter metering module according to claim 1, characterized in that, The pins include communication signal pins and power supply signal pins, arranged in a single row of 6 pins with a pin spacing of 3.96mm and gold-plated surface.

3. The pluggable electricity metering module according to claim 1, characterized in that, The positioning post is integrally formed with the bottom cover, and a guide chamfer is provided at the end.

4. The plug-in installed energy meter metering module according to claim 1, characterized in that, The screw fixing hole is a countersunk hole, which is suitable for M3 screws. After installation, the screw does not protrude from the surface of the bottom cover.

5. The plug-in installed energy meter metering module according to claim 1, characterized in that, The side plate and the top cover are assembled quickly without screws by sliding a slider into a groove.

6. The pluggable electricity metering module according to claim 1, characterized in that, Both the live wire inlet and outlet ports are screw-type terminals with a rated current of 60A, suitable for 6~16mm² wires.

7. The pluggable energy meter metering module according to claim 1, characterized in that, It also includes a circuit control section, which includes a main control unit, a power supply unit, a metering unit, a data acquisition unit, a communication unit, a relay unit, and a storage unit.

8. The pluggable electricity metering module according to claim 7, characterized in that, The communication unit transmits RS485 signals via pins, and the power supply unit converts the live wire voltage into +12V and +3.3V DC power to supply power to each unit.

9. The pluggable energy meter metering module according to claim 7, characterized in that, The metering unit uses a dedicated metering chip to collect current and voltage signals and output metering pulses to drive the pulse indicator light to flash.

10. The pluggable energy meter metering module according to claim 7, characterized in that, The relay unit uses an H-bridge to drive a magnetic latching relay to achieve circuit breaker / closing control, and the status is indicated by a circuit breaker indicator light.

Images