plug base

Abstract

The application relates to the field of low-voltage electrical apparatuses, in particular to a plug-in base, wherein the incoming line connection terminal of an electric energy meter is one-to-one plug-in electrically connected with the electric meter incoming line connection terminal, the outgoing line connection terminal of the electric energy meter is one-to-one plug-in electrically connected with the electric meter outgoing line connection terminal, one end of a second copper bar is connected with the electric meter incoming line connection terminal and is electrically connected, the other end is used as a second connection terminal on the incoming line side, one end of a third copper bar is connected with the electric meter outgoing line connection terminal and is electrically connected, the other end is used as a first connection terminal on the outgoing line side; the plug-in base reduces the number of parts, has a simple and reliable structure, and is convenient for assembling with corresponding electrical apparatuses.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical appliances, and more specifically to a plug-in base. Background Technology

[0002] Existing metering boxes typically include an electricity meter, an incoming line switch, an outgoing line switch, and a control module. Some metering boxes may also include additional expansion modules for functional purposes. These electrical devices within the metering box require electrical connections, which are currently achieved primarily through wires and bolts. Therefore, existing metering boxes suffer from the following problems: 1. Numerous components, resulting in a heavy workload for assembly. 2. Numerous wire connection points, making maintenance inconvenient. 3. Unreliable wire connections, prone to loose connections and incorrect connections. 4. Maintenance can easily lead to prolonged power outages and large power outage areas. Summary of the Invention

[0003] The purpose of this invention is to overcome at least one defect of the prior art and provide a plug-in base that reduces the number of parts, has a simple and reliable structure, and is easy to assemble with corresponding electrical devices.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A plug-in base includes a copper busbar circuit structure, comprising an incoming line connection terminal group, a meter connection terminal group, and an outgoing line connection terminal group connected in series in the same electrical circuit; the meter connection terminal group includes an incoming line connection terminal that is plugged into and electrically connected to the incoming line terminal of the energy meter, and an outgoing line connection terminal that is plugged into and electrically connected to the outgoing line terminal of the energy meter; the incoming line connection terminal group includes a plug-in type incoming line second connection terminal, and the outgoing line connection terminal group includes a plug-in type outgoing line first connection terminal;

[0006] The copper busbar circuit structure further includes a second copper busbar and a third copper busbar; one end of each second copper busbar is connected and electrically connected to the corresponding meter inlet connection terminal, and the other end serves as the second connection terminal on the inlet side; one end of each third copper busbar is connected and electrically connected to the corresponding meter outlet connection terminal, and the other end serves as the first connection terminal on the outlet side.

[0007] Furthermore, the meter inlet connection terminal and the meter outlet connection terminal are alternately arranged along direction d1, the second connection terminals on the inlet side are arranged side by side with intervals along direction d1, the first connection terminals on the outlet side are arranged side by side along direction d1, the second connection terminals on the inlet side and the first connection terminals on the outlet side are arranged in sequence along direction d1, and the second connection terminals on the inlet side and the first connection terminals on the outlet side are located on one side of the meter connection terminal group in direction d3;

[0008] The directions d1 and d3 are perpendicular to each other.

[0009] Furthermore, the second copper busbar includes a first section, a middle section, and a tail section connected in sequence. The first section is connected to and electrically connected to the corresponding meter inlet terminal, and the tail section serves as the corresponding inlet-side second connection terminal. The third copper busbar includes a first section, a middle section, and a tail section connected in sequence. The first section is connected to and electrically connected to the corresponding meter outlet terminal, and the tail section serves as the corresponding outlet-side first connection terminal.

[0010] The projection direction of the copper busbar circuit structure is the orthogonal projection of direction d1 or d3, and the middle sections of the second and third copper busbars are arranged side by side along direction d2.

[0011] The directions d1, d2, and d3 are perpendicular to each other.

[0012] Furthermore, the projection direction of the copper busbar circuit structure is an orthogonal projection of direction d1, where the first segments of each second copper busbar overlap, the first segments of each third copper busbar at least partially overlap, the first segments of the second copper busbar and the first segments of the third copper busbar at least partially overlap, the last segments of each second copper busbar at least partially overlap, the last segments of each third copper busbar at least partially overlap, and the last segments of the second copper busbar and the last segments of the third copper busbar at least partially overlap or are arranged side by side at intervals along direction d3.

[0013] Furthermore, the copper busbar circuit structure also includes an insulating partition plate, which is located between the middle section of the second copper busbar and the middle section of the third copper busbar in the direction d2.

[0014] The projection direction of the copper busbar circuit structure is the orthogonal projection of direction d2. Part of the middle section of the second copper busbar and part of the middle section of the third copper busbar are intersected. The insulating partition plate separates at least the part where the middle sections of the second copper busbar and the middle sections of the third copper busbar intersect.

[0015] Furthermore, the projection direction of the copper busbar circuit structure is an orthogonal projection of direction d2, at least a portion of the middle section of the second copper busbar overlaps with the insulating partition plate, and at least a portion of the middle section of the third copper busbar overlaps with the insulating partition plate.

[0016] The insulating partition plate is provided with a second copper busbar slot for inserting the middle section of the second copper busbar and a third copper busbar slot for inserting the middle section of the third copper busbar.

[0017] Furthermore, the copper busbar circuit structure also includes pluggable first connection terminals on the input side that correspond one-to-one with the second connection terminals on the input side; the copper busbar circuit structure also includes first copper busbars that correspond one-to-one with the first connection terminals on the input side, with one end of each first copper busbar serving as the first connection terminal on the input side and the other end used for electrical connection with the external conductor of the input line; each of the first connection terminals on the input side is arranged side by side with intervals along direction d1, and the corresponding first connection terminals on the input side and second connection terminals on the input side are arranged side by side with intervals along direction d3.

[0018] Furthermore, the copper busbar circuit structure also includes pluggable first connection terminals on the input side, which are configured one-to-one with the second connection terminals on the input side; when the number of copper busbar circuit structures of the plug-in base is ≥2, the plug-in base also includes fifth copper busbars configured one-to-one with the copper busbar circuit structures. Each fifth copper busbar includes a fifth copper busbar plug-in section, a fifth copper busbar middle section, and a fifth copper busbar mating section. One end of the fifth copper busbar plug-in section and the fifth copper busbar mating section are connected to the fifth copper busbar middle section. The fifth copper busbar plug-in section serves as the first connection terminal on the input side. The number of fifth copper busbar plug-in sections of each fifth copper busbar is the same as the number of input side connection terminal groups. The corresponding first connection terminals and second connection terminals on the input side are arranged side by side at intervals along direction d3.

[0019] Furthermore, the copper busbar circuit structure also includes a pluggable second connection terminal on the outgoing line side; the copper busbar circuit structure also includes a fourth copper busbar that is configured one-to-one with the first connection terminal on the outgoing line side, one end of the fourth copper busbar serving as the second connection terminal on the outgoing line side, and the other end being used for electrical connection with the external conductor of the outgoing line.

[0020] Furthermore, each connection terminal of the meter connection terminal group is used to plug into and electrically connect to each wiring terminal of the energy meter along direction d3 or direction d2; each connection terminal of the incoming line side connection terminal group is used to plug into and electrically connect to the corresponding external wiring terminal along direction d2; each connection terminal of the outgoing line side connection terminal group is used to plug into and electrically connect to the corresponding external wiring terminal along direction d2.

[0021] The directions d1, d2, and d3 are perpendicular to each other.

[0022] The plug-in base of the present invention has a second copper busbar with one end connected to the meter's inlet connection terminal and the other end serving as the inlet-side second connection terminal, and a third copper busbar with one end connected to the meter's outlet connection terminal and the other end serving as the outlet-side first connection terminal. This reduces the number of parts and is simple and reliable in structure. All connection terminals are plug-in type connection terminals, which simplifies the assembly operation with the corresponding electrical device, improves efficiency, and allows the meter to be disassembled or replaced by hot-swapping.

[0023] Furthermore, the insulating separator plate helps to improve the insulation performance between the second and third copper busbars. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of the plug-in base of the present invention from a first perspective. The plug-in base has a base unit for mounting a four-phase (i.e., three-phase four-wire) energy meter, a four-phase (i.e., three-phase four-wire) incoming switch and a four-phase (i.e., three-phase four-wire) outgoing switch.

[0025] Figure 2 This is a structural schematic diagram of the plug-in base of the present invention from a second perspective. The plug-in base has a base unit for mounting a four-phase (i.e., three-phase four-wire) energy meter, a four-phase (i.e., three-phase four-wire) incoming switch and a four-phase (i.e., three-phase four-wire) outgoing switch.

[0026] Figure 3 This is a schematic diagram of the structure of the plug-in base of the present invention, which removes the base, in the assembled state with the energy meter, the incoming switch and the outgoing switch. The plug-in base has a base unit.

[0027] Figure 4 This is the invention Figure 1 The copper busbar circuit structure of the plug-in base is shown in the first-view diagram. It is used to cooperate with a four-phase (i.e., three-phase four-wire) energy meter, a four-phase (i.e., three-phase four-wire) incoming switch and a four-phase (i.e., three-phase four-wire) outgoing switch.

[0028] Figure 5 This is the invention Figure 1 The copper busbar circuit structure of the plug-in base is shown in the second perspective. It is used to cooperate with a four-phase (i.e., three-phase four-wire) energy meter, a four-phase (i.e., three-phase four-wire) incoming switch and a four-phase (i.e., three-phase four-wire) outgoing switch.

[0029] Figure 6 This is a schematic diagram of the outgoing switch and control module of the present invention from two different perspectives;

[0030] Figure 7 This is a schematic diagram of the structure of the outgoing switch, control module and sampling device of the present invention in the assembled state; in sub-figure (71), the outgoing switch, control module and sampling device are in the assembled state; in sub-figure (72), the control module and sampling device are in the assembled state, and the outgoing switch, control module and sampling device are in the separated state;

[0031] Figure 8 This is a schematic diagram of the sampling device and control module of the present invention;

[0032] Figure 9 This is a schematic diagram of the control module of the present invention;

[0033] Figure 10 This is a schematic diagram of the output switch and sampling device of the present invention;

[0034] Figure 11 This is a schematic diagram of the plug-in base of the present invention from a second perspective. The plug-in base has a base unit and at least a second indicator structure is shown.

[0035] Figure 12 This is a structural schematic diagram of the plug-in base of the present invention from a second perspective, showing at least a first cable management cover, a second inlet cover, and a second outlet cover. The plug-in base has a base unit and is used to install a four-phase (i.e., three-phase four-wire) energy meter, a four-phase (i.e., three-phase four-wire) inlet switch, and a four-phase (i.e., three-phase four-wire) outlet switch.

[0036] Figure 13 This is an exploded view of the plug-in base of the present invention. The plug-in base has a base unit for mounting a four-phase (i.e., three-phase four-wire) energy meter, a four-phase (i.e., three-phase four-wire) incoming switch and a four-phase (i.e., three-phase four-wire) outgoing switch.

[0037] Figure 14 This is the invention Figure 13 A magnified view of the 9000 section;

[0038] Figure 15 This is a structural schematic diagram of the meter connection terminal group, the second copper busbar, the third copper busbar, and the insulating partition plate of the present invention. Sub-figure 251 is a structural schematic diagram of the meter connection terminal group, the second copper busbar, the third copper busbar, and the insulating partition plate in the assembled state, and sub-figure 252 is a structural schematic diagram of the meter connection terminal group, the second copper busbar, the third copper busbar, and the insulating partition plate in the disassembled state.

[0039] Figure 16 This is a structural schematic diagram of the plug-in base of the present invention from a second perspective. The plug-in base has two base units.

[0040] Figure 17 This is a schematic diagram of the copper busbar circuit structure, the four-phase (i.e., three-phase four-wire) incoming switch and the four-phase (i.e., three-phase four-wire) outgoing switch and control module of the present invention from a second perspective and in the assembled state, wherein the fifth copper busbar connects the first connection terminals of the incoming switches of each base unit together.

[0041] Figure 18 This is a structural schematic diagram of the plug-in base of the present invention from a second perspective, showing at least a first cable management cover, a second inlet cover, and a second outlet cover. The plug-in base has a base unit and is used to install a two-phase (i.e., single-phase two-wire) energy meter, a two-phase (i.e., single-phase two-wire) inlet switch, and a two-phase (i.e., single-phase two-wire) outlet switch.

[0042] Figure 19 This is a schematic diagram of the structure of the plug-in base of the present invention. The plug-in base has two base units. The plug-in base is used to install a two-phase (i.e., single-phase two-wire) energy meter, a two-phase (i.e., single-phase two-wire) incoming switch and a two-phase (i.e., single-phase two-wire) outgoing switch.

[0043] Figure 20 This is the invention Figure 19 First exploded view of the plug-in base in the middle;

[0044] Figure 21 This is the invention Figure 19 Second exploded view of the plug-in base;

[0045] Figure 22 This is a schematic diagram of the structure of the plug-in base of the present invention, which at least shows the copper bus circuit structure and the assembly relationship between the fifth copper bus and the base body. The plug-in base has two base units for installing a two-phase (i.e., single-phase two-wire) energy meter, a two-phase (i.e., single-phase two-wire) incoming switch and a two-phase (i.e., single-phase two-wire) outgoing switch. Each base unit shares the incoming position and the incoming connection terminal group.

[0046] Figure 23 This is the invention Figure 22 The diagram shows the structure of the main body of the plug-in base, where the two main bodies are integrated into one piece.

[0047] Figure 24 This is the invention Figure 22 The copper busbar circuit structure of the plug-in base and the structural diagram of the fifth copper busbar in the assembled state;

[0048] Figure 25 This is a schematic diagram of the plug-in base of the present invention from a second perspective. The plug-in base has two base units, and the two base units have independent cable entry positions.

[0049] Figure 26 This is the invention Figure 25 A schematic diagram of the copper busbar circuit structure of the plug-in base;

[0050] Figure 27 This is a schematic diagram of the plug-in base of the present invention from a second perspective. The plug-in base has a base unit, and the base unit is provided with an incoming line switch avoidance notch for avoiding the incoming line switch.

[0051] Figure 28 This is a schematic diagram of the plug-in base of the present invention from a second perspective, which is related to... Figure 27 Compared to the plug-in base shown, it does not have a second copper busbar and a meter inlet connection terminal;

[0052] Figure 29 This is a schematic diagram of the plug-in base of the present invention from a second perspective. It has a base unit and a first shorting hole and a second shorting hole are provided on the first cable management plate.

[0053] Figure 30 This is a schematic diagram of the shorting device of the present invention.

[0054] Explanation of reference numerals in the attached figures

[0055] 10. Base, base body 101, first cable management cover 102, insulating partition 103, second cable management cover 104, third cable management cover 105, inlet cover assembly 106, first inlet cover 1061, second inlet cover 1062, outlet cover assembly 107, first outlet cover 1071, second outlet cover 1072; middle cable management plate assembly 108, first shorting hole 1091, second shorting hole 1092, inlet switch clearance notch 9211;

[0056] 11 Electricity meter position, 12 Incoming line switch position, 13 Outgoing line switch position, 14 Expansion module position, 15 Incoming line position, 16 Outgoing line position, 17 Incoming line compartment, 18 Outgoing line compartment, partition 19;

[0057] Electricity meter connection terminal group 20, electricity meter inlet connection terminal 21, electricity meter outlet connection terminal 22; inlet side connection terminal group 30, inlet side first connection terminal 31, inlet side second connection terminal 32; outlet side connection terminal group 40, outlet side first connection terminal 41, outlet side second connection terminal 42; control module connection terminal group 50; expansion module connection terminal group 60;

[0058] External connection inlet terminal block 70; External connection outlet terminal block 80;

[0059] Electricity meter positioning detection mechanism 91; Incoming line switch positioning detection mechanism 92; Outgoing line switch positioning detection mechanism 93;

[0060] First copper busbar 110, first copper busbar head section 1101, first copper busbar tail section 1102; Second copper busbar 120, second copper busbar head section 1201, second copper busbar middle section 1202, second copper busbar tail section 1203; Third copper busbar 130, third copper busbar head section 1301, third copper busbar middle section 1302, third copper busbar tail section 1303; Fourth copper busbar 140, fourth copper busbar head section 1401, fourth copper busbar tail section 1402; Fifth copper busbar 150, fifth copper busbar plug section 1501, fifth copper busbar middle section 1502, fifth copper busbar mating section 1503;

[0061] Electricity meter 910;

[0062] Incoming line switch 920;

[0063] Outgoing switch 930, operating component 931, pulling component 932, limit shoulder 933, outgoing switch incoming terminal 934, outgoing switch outgoing terminal 935, handle 936, stationary contact 9371, moving contact 9372, arc extinguishing chamber 938, protection mechanism 939;

[0064] Control module 940, drive mechanism 941, control circuit board 942, tripping mechanism 943, motor 944, transmission gear set 945, drive gear component 946, control module wiring terminal 947;

[0065] Sampling device 950, first front connection terminal group 951, second front connection terminal group 952, first rear connection terminal group 953, second rear connection terminal group 954, sampling circuit board 955, current sampling component 956, residual current transformer 957, sampling device housing 958.

[0066] Shorting device 960, shorting device housing 961, shorting element 962, first shorting part 963, second shorting part 964. Detailed Implementation

[0067] The following embodiments, in conjunction with the accompanying drawings, further illustrate specific implementations of the plug-in base of the present invention. The plug-in base of the present invention is not limited to the descriptions in the following embodiments.

[0068] The plug-in base of this invention is applied in a metering box (not shown in the figure). The metering box is an electrical cabinet specifically for electricity metering, or an electrical cabinet with an electricity meter 910, an incoming switch 920, and an outgoing switch 930, etc., for electricity metering and also having other functions. The metering box usually contains an electricity meter 910, an incoming switch 920 (the incoming switch 920 refers to the switching device connected in series between the electricity meter 910 and the power supply side), and an outgoing switch 930 (the outgoing switch 930 refers to the switching device connected in series between the electricity meter 910 and the load side). The electricity meter 910, the incoming switch 920, and the outgoing switch 930 are set up one-to-one and used in conjunction. The plug-in base of this invention is at least used to support the electricity meter 910 and the outgoing switch 930. The incoming switch 920 can be supported on the plug-in base or fixed on a structure outside the plug-in base inside the metering box (e.g., the bottom wall of the metering box or a mounting rail fixed inside the metering box) as needed.

[0069] Furthermore, such as Figure 1-2 As shown, the metering box is also equipped with an expansion module to realize functional expansion. The expansion module can be carried on the plug-in base, or it can be set on a structure other than the plug-in base. Those skilled in the art can make arrangements according to actual needs.

[0070] Furthermore, the incoming switch 920 and the outgoing switch 930 can be implemented using existing technology, such as a type of switchgear having at least an operating mechanism and a contact system, wherein the operating mechanism is kinetically connected to the contact system to close and open the contact system.

[0071] Specifically, the incoming line switch 920 is implemented by an isolating switch, which can be an existing isolating switch, and the specific structure will not be described in detail here.

[0072] Specifically, such as Figure 3 , 6 As shown in Figure 10, the outgoing line switches 930 are all implemented by circuit breakers (such as ordinary circuit breakers, residual current operated circuit breakers, or prepaid circuit breakers). Each circuit breaker includes an operating element 931, which is operated by external force to drive the circuit breaker to close and open. Each circuit breaker includes 1P type circuit breaker units, with a number of ≥2 units. Each circuit breaker unit includes an operating device and a contact system. The operating device includes a handle 936 (i.e., the operating element of the outgoing line switch 930) and an operating mechanism. The contact system includes a moving contact 9372 and a stationary contact 9371 used in conjunction. The handle 936 is throttle-connected to the operating mechanism, and the operating mechanism is throttle-connected to the moving contact 9372. The handle 936 of each circuit breaker unit is connected to the operating element 931 to achieve synchronous operation of each handle 936. The circuit breaker unit also includes an arc-extinguishing chamber 938 that works in conjunction with the contact system and a protection mechanism 939 (e.g., an intelligent trip unit). When a short circuit or overload fault occurs in the phase where the circuit breaker unit is located, the protection mechanism 939 drives the operating mechanism to trip the circuit breaker unit. Furthermore, each circuit breaker unit has an independent housing, or they are housed in a common housing with insulating partitions between adjacent circuit breaker units. Furthermore, the outgoing line switch 930 is also equipped with a pull-out member 932 for an operator to pull out the outgoing line switch 930.

[0073] Furthermore, such as Figure 3 , 6As shown in Figure 7, the metering box is also equipped with a control module 940, which works in conjunction with the outgoing line switch 930 to drive the opening and closing of the outgoing line switch 930. Furthermore, the control module 940 is connected to the operating device. The control module 940 can be implemented using existing technology. For example, the control module 940 includes a drive mechanism 941, a control circuit board 942, and a tripping mechanism 943. The drive mechanism 941 includes a motor 944, a transmission gear set 945, and a drive gear component 946. The motor 944 is connected to the control circuit board 942. The motor 944 is connected to the drive gear component 946 via the transmission gear set 945. The drive gear component 946 is connected to the handle 936 of each circuit breaker unit. The tripping mechanism 943 is connected to the control circuit board 942 and is in transmission cooperation with the operating mechanism of the circuit breaker unit. The control circuit board 942 controls the rotation of the motor 944 to drive each circuit breaker unit to close and open synchronously. The control circuit board 942 also controls the tripping mechanism 943 to actuate, thereby driving the operating mechanism of each circuit breaker unit to trip. Furthermore, the control module 940 and the outgoing switch 930 are either detachable separate structures or integrated structures.

[0074] Furthermore, the metering box also includes a box body (not shown in the figure) and a box door (not shown in the figure). The plug-in base, inlet switch 920, outlet switch 930, control module 940, expansion module, etc., are all housed within the space formed by the box body and the box door; for example... Figure 3 and Figure 6 As shown, the outgoing switch 930 includes a limiting shoulder 933 disposed on the housing; the door has a door opening (not shown in the figure) through which the operating member 931 of the outgoing switch 930 protrudes outward, and the side edge of the door opening abuts against the limiting shoulder 933 for limiting and fixing, so as to reliably fix the outgoing switch 930 in the working position (e.g., in the outgoing switch position 13 described later). Further, the incoming switch 920 includes a limiting shoulder 933 disposed on the housing, and the door is used to abut against the limiting member 933 for limiting and fixing, so as to reliably fix the incoming switch 920 in the working position (e.g., in the incoming switch position 12 described later).

[0075] Specifically, such as Figure 3 and 6 As shown, both the incoming line switch 920 and the outgoing line switch 930 include two sets of limiting shoulders 933. The two sets of limiting shoulders 933 located on the same switch are disposed on the housing of the switch and located on both sides of the operating member 931 of the switch.

[0076] Furthermore, the number of phases of the energy meter 910, the incoming switch 920, and the outgoing switch 930 are the same.

[0077] Specifically, the energy meter 910 is a two-phase energy meter (or a single-phase two-wire energy meter) including phase P and phase N. Correspondingly, the incoming switch 920 is a two-phase disconnecting switch (or a single-phase two-wire disconnecting switch) including phase P and phase N, and the outgoing switch 930 is a two-phase circuit breaker (or a single-phase two-wire circuit breaker) including phase P and phase N. Alternatively, the energy meter 910 is a four-phase energy meter (or a three-phase four-wire energy meter) including phase A, phase B, phase C, and phase N. Correspondingly, the incoming switch 920 is a four-phase disconnecting switch (or a three-phase four-wire disconnecting switch) including phase A, phase B, phase C, and phase N, and the outgoing switch 930 is a four-phase circuit breaker (or a three-phase four-wire circuit breaker) including phase A, phase B, phase C, and phase N.

[0078] like Figure 1-2As shown in Figures 21-23, 26, and 28-29, the plug-in base of the present invention has a length, width, and height in the directions d1, d2, and d3, respectively, and these directions are perpendicular to each other. Further, the plug-in base of the present invention includes m base unit groups where m ≥ 1, meaning the number of base unit groups is m ≥ 1. Each base unit group includes n base units where n ≥ 1, meaning the number of base units is n ≥ 1. Each base unit includes a base 10 and a terminal group fixedly disposed relative to the base 10. The base 10 includes a group of mounting positions disposed thereon, comprising meter positions 11 for mounting an energy meter 910 and outlet switch positions 13 for mounting an outlet switch 930, which are arranged side-by-side along direction d3. The terminal group includes a meter connection terminal group 20 and an outgoing switch connection terminal group, which are arranged one-to-one and connected in series in the same electrical circuit. The meter connection terminal group 20 is located at the meter position 11 (for example, at least the part of each connection terminal of the meter connection terminal group 20 used for plugging and connecting with the wiring terminals of the energy meter 910 is located in the meter position 11). The meter connection terminal group 20 includes meter outgoing connection terminals 22 for plugging and connecting one-to-one with the outgoing wiring terminals of the energy meter 910. The number of meter outgoing connection terminals 22 is the same as the number of phases of the energy meter 910. The wiring terminals of the energy meter 910 (including the incoming wiring terminals) The number of terminals (including outgoing line terminals) is twice the number of phases of the energy meter 910; the outgoing line switch connection terminal group is located at the outgoing line switch position 13 (for example, at least the portion of each connection terminal of the outgoing line switch connection terminal group used for plugging and electrically connecting with the terminals of the outgoing line switch 930 is located within the outgoing line switch position 13), each connection terminal of the outgoing line switch connection terminal group is used for plugging and electrically connecting with each terminal of the outgoing line switch 930, and the number of connection terminals of the outgoing line switch connection terminal group and the number of terminals of the outgoing line switch 930 are both twice the number of phases of the outgoing line switch 930; the outgoing line switch connection terminal group is also used for electrical connection with the outgoing line external conductor. The outgoing line external conductor refers to the conductor connected in series between the outgoing line switch 930 and the lower-level electrical circuit / secondary electrical circuit, or the conductor connected in series between the outgoing line switch 930 and the load side. The terms 11 (meter position), 13 (outgoing switch position), 12 (incoming switch position), 15 (incoming switch position), and 16 (outgoing switch position) mentioned below refer to the corresponding three-dimensional spaces (i.e., 11 is the three-dimensional space for installing the energy meter 910, 13 is the three-dimensional space for installing the outgoing switch 930, 12 is the three-dimensional space for installing the incoming switch 920, 15 is the three-dimensional space for installing the incoming connection terminal group, and 16 is the three-dimensional space for installing the outgoing connection terminal group), and are not merely descriptive of planar positions.

[0079] The plug-in base of the present invention enables plug-in installation and disassembly of the energy meter 910 and the outgoing switch 930, simplifies the assembly and wiring operations between the plug-in base and the energy meter 910 and the outgoing switch 930, significantly improves installation and wiring efficiency, and saves manpower. The outgoing switch 930 can be disassembled or replaced by hot-swapping.

[0080] Furthermore, the incoming terminal of the energy meter 910 is electrically connected to an external incoming conductor via an incoming switch 920. The external incoming conductor refers to a conductor connected in series between the incoming switch 920 and the power supply side, or a conductor connected in series between the incoming switch 920 and the upstream electrical circuit.

[0081] like Figure 16-17 As shown in Figures 19-26, when the number of base units n ≥ 2 in the base unit group, the base units are arranged side by side along direction d1. Furthermore, in the base unit group, the base 10 of each base unit is either an integral structure or a detachable split structure; specifically, the base body 101 of each base 10 is either an integral structure or a detachable split structure.

[0082] In the plug-in base of the present invention, when the number of base unit groups m ≥ 2, each base unit group is arranged side-by-side at intervals along direction d1 or direction d3. Furthermore, each of the base unit groups is an integral or detachable split structure. Preferably, each base unit group in the plug-in base of the present invention is an integral structure.

[0083] like Figure 1-2 As shown in 4-5, 8, 11-14, 18, 29-30, the following is the first embodiment of the plug-in base of the present invention.

[0084] like Figure 1-2As shown in Figures 11-14 and 18, in the first embodiment of the plug-in base, the number of base unit groups m=1, the number of base units n=1, and the base unit includes a base 10 and a terminal group fixedly disposed relative to the base 10. The base 10 includes a mounting position group disposed thereon, which includes meter positions 11 for mounting the energy meter 910 and outgoing switch positions 13 for mounting the outgoing switch 930, which are arranged one-to-one. The terminal group includes a meter connection terminal group 20 and an outgoing switch connection terminal group, which are arranged one-to-one and connected in series in the same electrical circuit. The meter connection terminal group 20 is disposed in the meter position 11, and each connection terminal of the meter connection terminal group 20 is used to plug into and electrically connect with each wiring terminal of the energy meter 910. The number of connection terminals of the meter connection terminal group 20 and the number of wiring terminals of the energy meter 910 are both twice the number of phases of the energy meter 910. The meter connection terminal group 20 is also used to connect to the incoming external conductor through the incoming switch 920. Electrical connection; the outgoing switch connection terminal group is located in the outgoing switch position 13. Each connection terminal of the outgoing switch connection terminal group is used to plug into and electrically connect with each wiring terminal of the outgoing switch 930. The number of connection terminals of the outgoing switch connection terminal group and the number of wiring terminals of the outgoing switch 930 are both twice the number of phases of the outgoing switch 930. The outgoing switch connection terminal group is also used to electrically connect with the outgoing external conductor, that is, the incoming external conductor, the meter connection terminal group 20, the outgoing switch connection terminal group and the outgoing external conductor are connected in series in the electrical circuit.

[0085] The plug-in base of the first embodiment enables plug-in installation and disassembly of the energy meter 910 and the outgoing switch 930, simplifies the assembly and wiring operations between the plug-in base and the energy meter 910 and the outgoing switch 930, significantly improves installation and wiring efficiency, and saves manpower. The energy meter 910 and the outgoing switch 930 can be disassembled or replaced by hot-swapping.

[0086] like Figure 1-2As shown in Figures 4-5, 11-20, 22, and 24-27, the meter connection terminal group 20 includes a meter inlet connection terminal 21 and a meter outlet connection terminal 22. The meter inlet connection terminal 21 and the meter outlet connection terminal 22 are arranged in a one-to-one correspondence. The meter inlet connection terminal 21 is used for one-to-one plug-in electrical connection with the inlet wiring terminal of the energy meter 910 and is also used for electrical connection with the external conductor of the inlet line through the inlet switch 920. That is, each meter inlet connection terminal 21 is respectively connected to each inlet wiring terminal of the energy meter 910. The meter is plugged in and electrically connected to the external conductor of the incoming line via the incoming line switch 920. The meter output connection terminal 22 is used to plug in and electrically connect to the output terminal of the energy meter 910 one-to-one. That is, each meter output connection terminal 22 is plugged in and electrically connected to each output terminal of the energy meter 910. The number of meter incoming connection terminals 21, the number of energy meter incoming terminals, the number of meter output connection terminals 22, and the number of energy meter output terminals are all the same as the number of phases of the energy meter 910. The outgoing switch connection terminal group includes an outgoing switch first connection terminal and an outgoing switch second connection terminal. The outgoing switch first connection terminal and the outgoing switch second connection terminal are configured in a one-to-one correspondence. The outgoing switch first connection terminal is used to plug and connect one-to-one with the incoming terminal of the outgoing switch 930, that is, each outgoing switch first connection terminal is plugged and connected to each incoming terminal of the outgoing switch 930. The outgoing switch first connection terminal is also electrically connected one-to-one with the meter outgoing connection terminal 22. The outgoing switch second connection terminal is used to plug and connect one-to-one with the outgoing terminal of the outgoing switch 930, that is, each outgoing switch second connection terminal is plugged and connected to each outgoing terminal of the outgoing switch 930 and is also used to connect to the outgoing external conductor. The number of outgoing switch first connection terminals, the number of outgoing switch incoming terminals, the number of outgoing switch second connection terminals, and the number of outgoing terminal of the outgoing switch 930 are all the same as the number of phases of the outgoing switch 930.

[0087] Specifically, such as Figure 1-2 As shown in Figures 4-5 and 11-17, the energy meter 910 is a four-phase energy meter (or may also be called a three-phase four-wire energy meter); the number of the meter's incoming connection terminals 21, the number of the energy meter 910's incoming wiring terminals, the number of the meter's outgoing connection terminals 22, and the number of the energy meter 910's outgoing wiring terminals are all 4. The outgoing switch 930 is a four-phase circuit breaker (or may also be called a three-phase four-wire circuit breaker); the number of the outgoing switch's first connection terminals, the number of the outgoing switch 930's incoming wiring terminals, the number of the outgoing switch's second connection terminals, and the number of the outgoing switch 930's outgoing wiring terminals are all 4.

[0088] Specifically, such as Figure 18-20As shown in Figures 22-27, the energy meter 910 is a two-phase energy meter (or a single-phase two-wire energy meter); the number of the meter's incoming connection terminals 21, the number of the energy meter 910's incoming wiring terminals, the number of the meter's outgoing connection terminals 22, and the number of the energy meter 910's outgoing wiring terminals are all 2. The outgoing switch 930 is a two-phase circuit breaker (or a single-phase two-wire circuit breaker); the number of the meter's incoming connection terminals 21, the number of the energy meter 910's incoming wiring terminals, the number of the meter's outgoing connection terminals 22, and the number of the energy meter 910's outgoing wiring terminals are all 2.

[0089] Each connection terminal of the meter connection terminal group 20 is used to be plugged into and electrically connected to each wiring terminal of the energy meter 910 along direction d3 or direction d2. That is, when the energy meter 910 is installed on the plug-in base, each connection terminal of the meter connection terminal group 20 is plugged into and electrically connected to each wiring terminal of the energy meter 910 along direction d3, or each connection terminal of the meter connection terminal group 20 is plugged into and electrically connected to each wiring terminal of the energy meter 910 along direction d2.

[0090] Specifically, such as Figure 1-3 As shown in Figures 11-15, in the plug-in base of the first embodiment, each connection terminal of the meter connection terminal group 20 is plugged into and electrically connected to each wiring terminal of the energy meter 910 along direction d3.

[0091] like Figure 1-3 As shown in Figures 11-15, the outgoing switch connection terminal group is used to plug and electrically connect with each terminal of the outgoing switch 930 along direction d2. That is, when the outgoing switch 930 is installed on the plug-in base, each connection terminal of the outgoing switch connection terminal group is plugged and electrically connected with each terminal of the outgoing switch 930 along direction d2.

[0092] like Figure 1-2 As shown in Figures 4-5 and 11-15, the terminal group also includes an incoming line switch connection terminal group. The incoming line switch connection terminal group, the meter connection terminal group 20, and the outgoing line switch connection terminal group are connected in series in the electrical circuit. The incoming line switch connection terminal group includes an incoming line switch second connection terminal. The incoming line switch second connection terminal is used to make a one-to-one plug-in electrical connection with the incoming line terminal of the incoming line switch 920. That is, each incoming line switch second connection terminal is plugged into and electrically connected to each incoming line terminal of the incoming line switch 920. The outgoing line terminal of the incoming line switch 920 is electrically connected to the incoming line external conductor.

[0093] The plug-in base of the first embodiment enables quick installation and circuit connection of the incoming line switch 920, simplifies the wiring and assembly operations between the plug-in base and the incoming line switch 920, and saves manpower.

[0094] The second connection terminal of the incoming line switch is used to be plugged into and electrically connected to the incoming line terminal of the incoming line switch 920 along direction d3 or direction d2. That is, when the incoming line switch 920 is installed on the plug-in base, the second connection terminal of the incoming line switch is plugged into and electrically connected to the incoming line terminal of the incoming line switch 920 along direction d3, or the second connection terminal of the incoming line switch is plugged into and electrically connected to the incoming line terminal of the incoming line switch 920 along direction d2.

[0095] Specifically, such as Figure 1-3 As shown in Figures 11-15, in the plug-in base of the first embodiment, the second connection terminal of the incoming line switch is plugged into and electrically connected to the incoming line terminal of the incoming line switch 920 along direction d2.

[0096] Specifically, one end of each connection terminal of the meter connection terminal group 20 protrudes into the meter position 11; one end of each second connection terminal of the incoming switch protrudes into the incoming switch position 12; one end of each connection terminal of the outgoing switch connection terminal group protrudes into the outgoing switch position 13; that is, each connection terminal of the meter connection terminal group 20 is a male connector, and each terminal of the meter 910 is a female connector; each connection terminal of the incoming switch connection terminal group is a male connector, and each terminal of the incoming switch 920 is a female connector; each connection terminal of the outgoing switch connection terminal group is a male connector, and each terminal of the outgoing switch 930 is a female connector.

[0097] It should be noted that each connection terminal of the meter connection terminal group 20, each second connection terminal of the incoming switch, and each connection terminal of the outgoing switch connection terminal group can be implemented by existing technology, such as plug-in type connection terminal or post-type plug-in type connection terminal, etc. The corresponding wiring terminals of the electricity meter 910, incoming switch 920, and outgoing switch 930 can also be implemented by existing technology, such as busbar clamp type wiring terminals adapted to plug-in type connection terminals or wiring terminals adapted to post-type plug-in type connection terminals, etc.

[0098] Other embodiments of the connection terminals of the meter connection terminal group 20, the second connection terminals of each incoming switch, and the connection terminals of the outgoing switch connection terminal group: each connection terminal of the meter connection terminal group 20 is a female connector, and each terminal of the energy meter 910 is a male connector, and the two are plugged in for electrical connection; each connection terminal of the second connection terminal of the incoming switch is a female connector, and each terminal of the incoming switch 920 is a male connector, and the two are plugged in for electrical connection; each connection terminal of the outgoing switch connection terminal group is a female connector, and each terminal of the outgoing switch 930 is a male connector, and the two are plugged in for electrical connection.

[0099] like Figure 1-2As shown in Figures 4-5, 11-15, and 18, in the base unit, the meter position 11 and the outgoing switch position 13 are arranged side by side along direction d3, and the incoming switch connection terminal group and the outgoing switch position 13 are arranged sequentially along direction d1. The incoming switch connection terminal group and the outgoing switch position 13 are located on the same side of the meter position 11 in direction d3.

[0100] Furthermore, the connection terminals of the meter connection terminal group 20 are arranged side by side at intervals along direction d1, and the meter inlet connection terminal 21 and the meter outlet connection terminal 22 are arranged alternately along direction d1. The arrangement of the meter inlet connection terminal 21 and the meter outlet connection terminal 22 helps to reduce the size of the smart mounting base in direction d2, thereby reducing the required installation space.

[0101] Furthermore, in the outgoing switch connection terminal group, the first connection terminals of each outgoing switch are arranged side by side with intervals along direction d1, the second connection terminal groups of each outgoing switch are arranged side by side with intervals along direction d1, and the corresponding first connection terminals and second connection terminals of the outgoing switches are arranged side by side with intervals along direction d3.

[0102] Furthermore, the second connection terminals of each of the incoming line switches are arranged side by side at intervals along direction d1.

[0103] In another embodiment of the arrangement of the terminals of the meter connection terminal group 20, the meter inlet connection terminals 21 are arranged side by side with intervals along direction d1, the meter outlet connection terminals 22 are arranged side by side with intervals along direction d1, and the corresponding meter inlet connection terminals 21 and meter outlet connection terminals 22 are arranged side by side with intervals along direction d2. That is, the row formed by all the meter inlet connection terminals 21 and the row formed by all the meter outlet connection terminals 22 are arranged side by side with intervals along direction d2. The above arrangement helps to reduce the size of the plug-in base in direction d1, thereby reducing the required installation space.

[0104] like Figure 1-2 As shown in 11-14 and 18, the mounting position group also includes an incoming switch position 12, a meter position 11, an incoming switch position 12 and an outgoing switch position 13, which are arranged one-to-one. The incoming switch connection terminal group is arranged at the incoming switch position 12 (for example, each connection terminal of the incoming switch connection terminal group, at least the part used for plugging and electrically connecting with the wiring terminal of the incoming switch 920 is located in the incoming switch position 12); in the base unit, the incoming switch position 12 and the outgoing switch position 13 are arranged sequentially along direction d1, and the incoming switch position 12 and the outgoing switch position 13 are arranged side by side with the meter position 11 along direction d3.

[0105] Specifically, in the base unit of the plug-in base in the first embodiment, the incoming switch position 12 and the outgoing switch position 13 are arranged side by side along direction d1.

[0106] In another embodiment of the layout of the meter position 11, the incoming switch position 12 and the outgoing switch position 13, in the direction d3, the incoming switch position 12 is set closer to the meter position 11 than the outgoing switch position 13, or the outgoing switch position 13 is set closer to the meter position 11 than the incoming switch position 12.

[0107] like Figure 1-2 As shown in Figures 11-14, the terminal group further includes an inlet-side connection terminal group 30 and an outlet-side connection terminal group 40, both fixedly mounted on the base 10. The inlet-side connection terminal group 30 serves as an inlet switch connection terminal group, and includes an inlet-side second connection terminal 32, which serves as a second connection terminal of the inlet switch. The inlet-side second connection terminal 32 is used for one-to-one electrical connection with the outlet wiring terminal of the inlet switch 920 (i.e., the external wiring terminal corresponding to the inlet-side second connection terminal 32; the external wiring terminal refers to the wiring terminal other than the plug-in base). The outlet-side connection terminal group 40 serves as an outlet... The switch connection terminal group, the outgoing line connection terminal group 40 includes an outgoing line first connection terminal 41, which serves as the first connection terminal of the outgoing line switch, and an outgoing line second connection terminal 42, which serves as the second connection terminal of the outgoing line switch. That is, the outgoing line first connection terminal 41 is used to plug and electrically connect with the incoming line terminal of the outgoing line switch 930 (that is, the external terminal corresponding to the outgoing line first connection terminal 41), and the outgoing line second connection terminal 42 is used to plug and electrically connect with the outgoing line terminal of the outgoing line switch 930 (that is, the external terminal corresponding to the outgoing line second connection terminal 42). The outgoing line second connection terminal 42 is also used to electrically connect with the outgoing line external conductor.

[0108] like Figure 4-5 As shown in Figures 13-15, the base unit further includes a copper busbar circuit structure, which includes a second copper busbar 120 and a third copper busbar 130 disposed within the base 10. The meter inlet connection terminal 21, the second copper busbar 120, and the inlet-side second connection terminal 32 (i.e., the inlet switch second connection terminal) are respectively disposed in a one-to-one manner. The meter outlet connection terminal 22, the third copper busbar 130, and the outlet-side first connection terminal 41 (i.e., the outlet switch first connection terminal) are respectively disposed in a one-to-one manner. One end of each second copper busbar 120 is connected and electrically connected to the corresponding meter inlet connection terminal 21, and the other end of each second copper busbar 120 serves as the corresponding inlet-side second connection terminal 32. One end of each third copper busbar 130 is connected and electrically connected to the corresponding meter outlet connection terminal 22, and the other end of each third copper busbar 130 serves as the corresponding outlet-side first connection terminal 41.

[0109] The second copper busbar 120 and the third copper busbar 130 eliminate the need for the wires connecting the energy meter 910, the incoming switch 920 and the outgoing switch 930 in series, which greatly improves the ease of installation and aesthetics. In addition, the second copper busbar 120 and the third copper busbar 130 directly realize the second connection terminal 32 on the incoming side and the first connection terminal 41 on the outgoing side, reducing the number of parts and simplifying the structure of the plug-in base.

[0110] Specifically, the second copper busbar 120 includes a second copper busbar head section 1201, a second copper busbar middle section 1202, and a second copper busbar tail section 1203 connected in sequence. The second copper busbar head section 1201 is connected and electrically connected to the corresponding meter inlet connection terminal 21, and the second copper busbar tail section 1203 serves as the corresponding inlet side second connection terminal 32. The third copper busbar 130 includes a third copper busbar head section 1301, a third copper busbar middle section 1302, and a third copper busbar tail section 1303 connected in sequence. The third copper busbar head section 1301 is connected and electrically connected to the corresponding meter outlet connection terminal 22, and the third copper busbar tail section 1303 serves as the corresponding outlet side first connection terminal 41. Further, the second copper busbar head section 1201 is welded to the corresponding meter inlet connection terminal 21 or connected by fasteners (such as bolts or rivets); the third copper busbar head section 1301 is welded to the corresponding meter outlet connection terminal 22 or connected by fasteners (such as bolts or rivets).

[0111] Specifically, the projection direction of the plug-in base is the orthogonal projection of direction d1, the projection direction of the base unit is the orthogonal projection of direction d1, and the projection direction of the copper busbar circuit structure is the orthogonal projection of direction d1. The middle section 1202 of the first copper busbar and the middle section 1302 of the third copper busbar are arranged side by side and spaced apart along direction d2. That is, all the middle sections 1202 of the first copper busbar are located on one side of all the middle sections 1302 of the third copper busbar in direction d2, or all the middle sections 1302 of the third copper busbar are located on one side of all the middle sections 1202 of the first copper busbar in direction d2.

[0112] Specifically, the base 10 is provided with second copper busbar holes (not shown in the figure) that correspond one-to-one with the second copper busbars 120 and third copper busbar holes (not shown in the figure) that correspond one-to-one with the third copper busbars 130. The portion of each second copper busbar 120 except for the second connection terminal of the incoming switch (i.e., the second connection terminal 32 on the incoming side) is located in the corresponding second copper busbar hole, and the portion of each third copper busbar 130 except for the first connection terminal of the outgoing switch (i.e., the first connection terminal 41 on the outgoing side) is located in the corresponding third copper busbar connection hole.

[0113] Specifically, the base 10 includes a base body 101, a first cable management cover 102, and an insulating partition 103. The first cable management cover 102, the insulating partition 103, the mounting position group, and the base unit are arranged in a one-to-one correspondence. The first cable management cover 102 is fixedly connected to the base body 101. In the direction d2, the insulating partition 103 is located between the base body 101 and the first cable management cover 102, and between the middle section 1202 of the second copper busbar and the middle section 1302 of the third copper busbar. Figure 5 and 13 As shown, the projection direction of the plug-in base is the orthogonal projection of direction d2, the projection direction of the base unit is the orthogonal projection of direction d2, and the projection direction of the copper bus circuit structure is the orthogonal projection of direction d2. In the same base unit, part of the second copper bus middle section 1202 and part of the third copper bus middle section 1302 are arranged intersectingly. The insulating partition plate 103 separates at least the part where the second copper bus middle section 1202 and the third copper bus middle section 1302 intersect. The part of the second copper bus 120 except for the second connection terminal 32 on the inlet side (i.e., the first section 1201 of the second copper bus and the second copper bus middle section 1202) and the part of the third copper bus 130 except for the first connection terminal 41 on the outlet side (i.e., the first section 1301 of the third copper bus and the third copper bus middle section 1302) are all covered by the first cable management cover plate 102.

[0114] The insulating partition plate 103 increases the creepage distance and insulation gap between the second copper busbar 120 and the third copper busbar 130; the first cable management cover plate 102 significantly reduces the exposed parts of the second copper busbar 120 and the third copper busbar 130, improving safety and aesthetics.

[0115] Specifically, the insulating partition plate 103 has a second copper busbar slot on one side that corresponds one-to-one with the middle section 1202 of the second copper busbar, and a third copper busbar slot on the other side that corresponds one-to-one with the middle section 1302 of the third copper busbar. On the orthogonal projection of the insertion base and the base unit, the middle section 1202 of the second copper busbar that overlaps with the insulating partition plate 103 is inserted into the corresponding second copper busbar slot. On the orthogonal projection of the insertion base and the base unit, the middle section 1302 of the third copper busbar that overlaps with the insulating partition plate 103 is inserted into the corresponding third copper busbar slot. Furthermore, on the orthogonal projection of the plug-in base in the direction of direction d2, the orthogonal projection of the base unit in the direction of direction d2, and the orthogonal projection of the copper busbar circuit structure in the direction of direction d2, the second copper busbar 120 that overlaps with the insulating partition plate 103 is a type I second copper busbar, and the remaining second copper busbars 120 are type II second copper busbars. The second copper busbar hole that mates with the type I second copper busbar is formed by the base body 101, the insulating partition plate 103, and the first cable management cover plate 102. The second copper busbar hole that mates with the type II second copper busbar is formed by the base body 101 and the first cable management cover plate 102. The projection direction of the plug-in base is the orthogonal projection of direction d2, the projection direction of the base unit is the orthogonal projection of direction d2, and the projection direction of the copper busbar circuit structure is the orthogonal projection of direction d2. The third copper busbar 130 that overlaps with the insulating partition plate 103 is a type I third copper busbar, and the remaining third copper busbars 130 are type II third copper busbars. The third copper busbar socket that cooperates with the type I third copper busbar is formed by the base body 101, the insulating partition plate 103, and the first cable management cover plate 102. The third copper busbar socket that cooperates with the type II third copper busbar 130 is formed by the base body 101 and the first cable management cover plate 102.

[0116] Specifically, refer to Figure 20 , 22As shown in Figure -25, when the plug-in base is used to install a two-phase (i.e., single-phase two-wire) energy meter 910, a (i.e., single-phase two-wire) incoming switch 920, and a (i.e., single-phase two-wire) outgoing switch 930, that is, when the electrical circuit is a two-phase electrical circuit, on the orthogonal projection of the plug-in base in the direction d2, on the orthogonal projection of the base unit in the direction d2, and on the orthogonal projection of the copper busbar circuit structure in the direction d2, in the same base unit, a second copper busbar 120 and a third copper busbar 130 are arranged crosswise. The second copper busbar 120 overlaps with the insulating partition plate 103 (specifically, the middle section 1202 of the second copper busbar 120 overlaps with the insulating partition plate 103), the other second copper busbar 120 does not overlap with the insulating partition plate 103, and the two third copper busbars 130 overlap with the insulating partition plate 103 (specifically, the middle section 1302 of the third copper busbar overlaps with the insulating partition plate 103). In other embodiments, the projection direction of the plug-in base is an orthogonal projection of direction d2, and in the same base unit, only one second copper busbar 120 and one third copper busbar 130 that intersect each other overlap with the insulating partition plate 103; or, the projection direction of the plug-in base is an orthogonal projection of direction d2, and in the same base unit, each second copper busbar 120 and each third copper busbar 130 overlaps with the insulating partition plate 103.

[0117] Specifically, such as Figure 13-15 As shown, when the plug-in base is used to install a four-phase (i.e., three-phase four-wire) energy meter 910, a four-phase (i.e., three-phase four-wire) incoming switch 920, and a four-phase (i.e., three-phase four-wire) outgoing switch 930, that is, when the electrical circuit is a four-phase electrical circuit, on the orthogonal projection of the plug-in base in the direction d2, on the orthogonal projection of the base unit in the direction d2, and on the orthogonal projection of the copper busbar circuit structure in the direction d2, in the same base unit, the three second copper busbars 120 and the three third copper busbars 130 located in the middle in the direction d2 are arranged crosswise. All the second copper busbars 120 overlap with the insulating partition plate 103, and all the third copper busbars 130 overlap with the insulating partition plate 103.

[0118] Specifically, such as Figure 11-13 As shown in Figure 18, in the base unit, in direction d3, the outgoing cable switch position 13 is located on one side of the first cable management cover plate 102, and the meter position 11 is located on the other side of the first cable management cover plate 102. Further, in the base unit, in direction d3, the incoming cable switch position 12 and the outgoing cable switch position 13 are located on one side of the first cable management cover plate 102, and the meter position 11 is located on the other side of the first cable management cover plate 102.

[0119] Specifically, the projection direction of the plug-in base is the orthogonal projection of direction d1, the projection direction of the base unit is the orthogonal projection of direction d1, and the projection direction of the copper busbar circuit structure is the orthogonal projection of direction d1. In the same base unit, the first segments 1201 of each second copper busbar overlap, the first segments 1301 of each third copper busbar overlap, the first segments 1201 and 1301 of the second copper busbar overlap at least partially, the second connecting terminals 32 on the incoming side (i.e., the second connecting terminals of the incoming switch) overlap, the first connecting terminals 41 on the outgoing side (i.e., the first connecting terminals of the outgoing switch) overlap, the second connecting terminals 42 on the outgoing side (i.e., the second connecting terminals of the outgoing switch) overlap, the first connecting terminals 41 and the second connecting terminals 42 on the outgoing side are arranged side by side at intervals along direction d3, and the connecting terminals of the meter connecting terminal group 20 overlap, i.e., the meter incoming connecting terminal 21 and the meter outgoing connecting terminal 22 overlap.

[0120] Furthermore, the second connecting terminal 32 on the inlet side overlaps with the first connecting terminal 41 on the outlet side; or, the second connecting terminal 32 on the inlet side, the first connecting terminal 41 on the outlet side, and the second connecting terminal 42 on the outlet side are arranged side by side with intervals along direction d3. In the plug-in base of the first embodiment, the second connecting terminal 32 on the inlet side overlaps with the first connecting terminal 41 on the outlet side.

[0121] In other embodiments, the plug-in base does not have a second copper busbar 120 and a third copper busbar 130. Instead, the corresponding second connection terminals of the incoming line switch and the incoming line connection terminal 21 of the meter are electrically connected through a second intermediate wire, and the corresponding outgoing line connection terminal 22 of the meter is electrically connected to the first connection terminal of the outgoing line switch through a third intermediate wire. The second and third intermediate wires are preferably wires with their own insulation. Alternatively, the second connection terminal of the incoming line switch is independent of the second copper busbar 120. One end of the second copper busbar 120 is connected and electrically connected to the corresponding incoming line connection terminal 21 of the meter, and the other end is connected and electrically connected to the corresponding second connection terminal of the incoming line switch. The first connection terminal of the outgoing line switch is independent of the third copper busbar 130. One end of the third copper busbar 130 is connected and electrically connected to the corresponding outgoing line terminal 22 of the meter, and the other end is connected and electrically connected to the corresponding first connection terminal of the outgoing line switch.

[0122] like Figure 1-2 As shown in 11-14 and 18, the mounting position group also includes a cable outlet position 16, with the cable outlet switch position 13 and the cable outlet position 16 being configured one-to-one; the terminal group also includes a cable outlet connection terminal group disposed in the cable outlet position 16, the cable outlet connection terminal group including an external cable outlet terminal 80 configured one-to-one with the second connection terminal of the cable outlet switch and electrically connected, and each external cable outlet terminal 80 is also used to connect and electrically connect with an external conductor of the cable outlet.

[0123] Specifically, in the base unit, the outgoing cable position 16 and the outgoing switch position 13 are arranged side by side along direction d3. The outgoing cable position 16 and the meter position 11 are located on both sides of the outgoing switch position 13 along direction d3. Each external outgoing cable terminal 80 is arranged side by side at intervals along direction d1. Furthermore, the outgoing cable position 16 is provided with an outgoing cable chamber 18 corresponding to each external outgoing cable terminal 80. Adjacent outgoing cable chambers 18 are separated by outgoing cable terminal partitions, and the external outgoing cable terminals 80 are disposed within their respective outgoing cable chambers 18. Furthermore, the outgoing cable terminal partition and the base 10 are either an integral structure or a separate structure.

[0124] like Figure 4-5 As shown in Figures 13-15, the copper busbar circuit structure also includes a fourth copper busbar 140. The fourth copper busbar 140 is configured to correspond one-to-one with the second connection terminal of the outgoing switch. One end of the fourth copper busbar 140 serves as the second connection terminal 42 on the outgoing side, and the other end is used to cooperate with the corresponding external outgoing terminal 80 (for example, this end of the fourth copper busbar 140 is directly electrically connected to the external outgoing terminal 80, or the two cooperate to clamp the external conductor of the outgoing line).

[0125] Specifically, the fourth copper busbar 140 includes a fourth copper busbar head section 1401 and a fourth copper busbar tail section 1402 connected in sequence. The fourth copper busbar head section 1401 serves as the second connection terminal 42 on the outgoing side, and the fourth copper busbar tail section 1402 is electrically connected to the corresponding external outgoing terminal 80.

[0126] Specifically, the base 10 further includes a cable outlet cover assembly 107 that is stacked and fixedly connected to the base body 101 along direction d2. The cable outlet cover assembly 107 corresponds one-to-one with the cable outlet positions 16. The projection direction of the insertion base is the orthogonal projection of direction d2, and the projection direction of the base unit is also the orthogonal projection of d2. In the same base unit, the tail section 1402 of the fourth copper busbar and the cable outlet connection terminal group are covered by the cable outlet cover assembly 107. The cable outlet cover assembly 107 reduces the exposed portion of the fourth copper busbar 140, improving safety and aesthetics. Furthermore, in the base unit, the base body 101, the first cable management cover 102, and the cable outlet cover assembly 107 cooperate to form a cable outlet switch cavity into which the cable outlet switch 930 is inserted along direction d2. Furthermore, the first cable management cover 102 is provided with a first cable management cover sidewall extending along direction d2, and the cable outlet cover group 107 is provided with a cable outlet cover group sidewall extending along direction d2. The first cable management cover sidewall and the cable outlet cover group sidewall are arranged opposite to each other along direction d3. Furthermore, the cable outlet cover group 107 includes a first cable outlet cover 1071 and a second cable outlet cover 1072. The first cable outlet cover 1071 and the second cable outlet cover 1072 are arranged sequentially along direction d3. The second connection terminal 42 on the cable outlet side passes through the first cable outlet cover 1071 and protrudes into the cable outlet switch position 13. The tail section 1402 of the fourth copper busbar is blocked by the first cable outlet cover 1071, and the external connection cable outlet terminal 80 is blocked by the first cable outlet cover 1071 and the second cable outlet cover 1072.

[0127] In another embodiment, the plug-in base does not have a fourth copper busbar 140, and the second connection terminal of the outgoing switch is independent of the fourth copper busbar 140. The corresponding second connection terminals of the outgoing switch and the external outgoing terminal 80 are electrically connected through a fourth intermediate wire. The fourth intermediate wire is preferably a wire with its own insulation sheath.

[0128] The base 10 is provided with fourth copper busbar holes (not shown in the figure) that correspond one-to-one with the fourth copper busbar 140. The fourth copper busbar 140 is set in the corresponding fourth copper busbar hole, so that the fourth copper busbar 140 can be reliably positioned and the insulation performance between adjacent fourth copper busbars 140 can be guaranteed.

[0129] Specifically, the fourth copper busbar hole is formed by the cooperation of the first cable outlet cover plate 1071 and the base body 101.

[0130] like Figure 1-2 As shown in 11-14 and 18, the incoming line switch connection terminal group also includes an incoming line switch first connection terminal disposed in the incoming line switch position 12. The incoming line switch first connection terminal and the incoming line switch second connection terminal are disposed in a one-to-one correspondence. The incoming line switch first connection terminal is used to plug and connect to the incoming line terminal of the incoming line switch 920.

[0131] Specifically, the incoming line side connection terminal group 30 also includes an incoming line side first connection terminal 31 fixedly mounted on the base 10 and located in the incoming line switch position 12. The incoming line side first connection terminal 31 serves as the first connection terminal of the incoming line switch and is used for one-to-one plug-in electrical connection with the incoming line wiring terminal of the incoming line switch 920 (that is, the external wiring terminal corresponding to the incoming line side first connection terminal 31).

[0132] Specifically, one end of the first connecting terminal of the incoming line switch protrudes into the incoming line switch position 12 and is a male-type connecting terminal, while the corresponding incoming line terminal of the incoming line switch 920 is a female-type terminal. Both the first connecting terminal of the incoming line switch and the incoming line terminal of the incoming line switch 920 can be implemented using existing technology, and will not be described in detail here.

[0133] In another embodiment of the first connection terminal of the incoming line switch, the first connection terminal of the incoming line switch is a female type connection terminal, and the corresponding incoming line terminal of the incoming line switch 920 is a male type terminal.

[0134] like Figure 1-3 As shown in Figures 11-15, in this embodiment, the first connection terminal 31 (first connection terminal of the incoming switch) and the second connection terminal 32 (second connection terminal of the incoming switch) on the incoming side are respectively plugged into and electrically connected to the incoming wiring terminal and the outgoing wiring terminal of the incoming switch 920 along direction d2.

[0135] like Figure 1-2 As shown in 11-14 and 18, the mounting position group also includes an inlet position 15 disposed on the base 10, and the inlet position 15 is disposed in a one-to-one correspondence with the inlet switch position 12; the terminal group also includes an inlet connection terminal group disposed in the inlet position 15, the inlet connection terminal group includes an external inlet terminal 70 disposed in a one-to-one correspondence with the first connection terminal of the inlet switch and electrically connected, and each external inlet terminal 70 is arranged side by side at intervals along the direction d1, and each external inlet terminal 70 is also used to connect and electrically connect with the external conductor of the inlet.

[0136] Specifically, in the base unit, the inlet position 15 and the inlet switch position 12 are arranged side by side along direction d3. The inlet position 15 and the meter position 11 are respectively located on both sides of the inlet switch position 12 along direction d3. The external connection terminals 70 are arranged side by side at intervals along direction d1. The inlet position 15 and the outlet position 16 are arranged sequentially along direction d1. Further, the inlet position 15 and the outlet position 16 are arranged side by side along direction d1, or the inlet position 15 is arranged closer to the meter position 11 relative to the outlet position 16 in direction d3, or the inlet position 15 is arranged farther away from the meter position 11 relative to the outlet position 16 in direction d3. Further, the inlet position 15 is provided with an inlet chamber 17 corresponding to the external connection terminals 70 one by one. Adjacent inlet chambers 17 are separated by inlet terminal partitions, and the external connection terminals 70 are located in the corresponding inlet chamber 17. Furthermore, the incoming line terminal block and the base 10 are either an integral or separate structure.

[0137] Specifically, the copper busbar circuit structure also includes a first copper busbar 110, and the first copper busbar 110, the external connection terminal 70, and the first connection terminal of the incoming switch are arranged one-to-one. One end of each first copper busbar 110 serves as the first connection terminal 31 on the incoming side, and the other end is used to cooperate with the corresponding external connection terminal 70 (for example, this end of the first copper busbar 110 is directly electrically connected to the external connection terminal 70 or the two cooperate to clamp the external conductor of the incoming line).

[0138] Specifically, the base 10 further includes an inlet cover plate assembly 106 stacked with the base body 101 along direction d2. The inlet cover plate assembly 106, the inlet position 15, and the inlet switch position 12 are arranged in a one-to-one correspondence. The projection direction of the plug-in base is an orthogonal projection of direction d2, and the projection direction of the base unit is an orthogonal projection of d2. The inlet cover plate assembly 106 covers the part of the first copper busbar 110 except for the first connection terminal 31 on the inlet side and the inlet connection terminal group. Further, the first copper busbar 110 includes a first copper busbar head section 1101 and a first copper busbar tail section 1102 connected in sequence. The first copper busbar head section 1101 serves as the first connection terminal 31 on the inlet side, and the first copper busbar tail section 1102 is electrically connected to the corresponding external inlet terminal 70. Further, the first copper busbar head section 1101 extends along direction d2, and the first copper busbar tail section 1102 extends along direction d3, and the two are connected at right angles. Furthermore, in the base unit, the base body 101, the first cable management cover plate 102, and the cable inlet cover plate assembly 106 cooperate to form an inlet switch cavity for inserting the inlet switch 920 along direction d2. Furthermore, the inlet cover plate assembly 106 includes an inlet cover plate assembly sidewall extending along direction d2, and the inlet cover plate assembly sidewall is disposed opposite to the first cable management cover plate sidewall of the first cable management cover plate 102 along direction d3. Furthermore, the incoming line cover assembly 106 includes a first incoming line cover 1061 and a second incoming line cover 1062 arranged sequentially along direction d3. The first connecting terminal of the incoming line switch (i.e., the first section 1101 of the first copper busbar) passes through the first incoming line cover 1061 and protrudes into the incoming line switch position 12. The projection direction of the plug-in base is an orthogonal projection of direction d2 and the projection direction of the base unit is an orthogonal projection of d2. The portion of the first copper busbar 110 other than the first connecting terminal of the incoming line switch is blocked by the first incoming line cover 1061, and the external connection incoming line terminal 70 is blocked by the first incoming line cover 1061 and the second incoming line cover 1062.

[0139] In other embodiments, the plug-in base does not have a first copper busbar 110, and the first connection terminal of the incoming line switch is independent of the first copper busbar 110. The corresponding first connection terminals of the incoming line switch and the external incoming line terminal 70 are electrically connected through a first intermediate wire. The first intermediate wire is preferably a wire with its own insulation sheath.

[0140] The base 10 is provided with first copper busbar holes (not shown in the figure) that correspond one-to-one with the first copper busbars 110. The first copper busbars 110 are set in the corresponding first copper busbar holes, which can not only realize the reliable positioning of each first copper busbar 110, but also ensure the insulation performance between adjacent first copper busbars 110.

[0141] Specifically, the first copper busbar hole is formed by the cooperation of the first inlet cover plate 1061 and the base body 101.

[0142] like Figure 1-2 As shown, the base 10 also includes a partition 19 disposed between the inlet position 15 and the outlet position 16 to separate the inlet position 15 and the outlet position 16. In the direction d3, one end of the partition 19 protrudes from the side of the external connection inlet terminal 70 and the external connection outlet terminal 80, which is the end where the external conductor 86 is inserted, to prevent unauthorized personnel from directly connecting the external connection inlet terminal 70 and the external connection outlet terminal 80 together to steal electricity.

[0143] like Figure 3 and 11 As shown, in the first embodiment of the plug-in base, the base unit further includes a sampling device 950 disposed in the base 10. The sampling device 950 includes a sampling circuit board 955 and a sampling element, which is used for electrical parameters and / or environmental parameters.

[0144] Specifically, the sampling element includes at least one of a current sampling element 956, a residual current transformer 957, a temperature sensor, and a voltage sensor; each of the current sampling elements 956 is used to collect the current of each phase of the electrical circuit; each of the voltage transformers is used to collect the voltage of each phase of the electrical circuit; the residual current transformer 957 is used to detect the residual current in the electrical circuit; the temperature sensor is used to collect the temperature in the environment (e.g., metering box) where the plug-in base is located and / or the temperature of at least some of the connecting terminals of the terminal group (i.e., the meter connection terminal group 20, the incoming line connection terminal group 30, the outgoing line connection terminal group 40, the incoming line connection terminal group and the outgoing line connection terminal group). Furthermore, the current sampling element 956 is preferably a Rogowski coil current transformer, which is sleeved on the middle section 1302 of the third copper busbar of the corresponding third copper busbar 130; the remaining current transformer 957 is sleeved on the tail section 1402 of the fourth copper busbar of all the fourth copper busbars 140; the plane of the sampling circuit board 955 is perpendicular to direction d2; and the voltage transformer is disposed on the sampling circuit board 955.

[0145] In another embodiment, the current sampling element 956 is a Rogowski coil current transformer, which is mounted on the corresponding fourth copper busbar 140; the remaining current transformer 957 is mounted on the middle section 1302 of all the third copper busbars.

[0146] In other embodiments, the current sampling element 956 may also be a manganese-copper shunt connected in series with the third copper busbar 130 or the fourth copper busbar 140.

[0147] Specifically, the plane containing the sampling circuit board 955 is perpendicular to direction d2. Alternatively, at least a portion of the sampling circuit board 955 is located in direction d3 between the first connection terminal 41 and the second connection terminal 42 on the outgoing side. Alternatively, the sampling circuit board 955 is located on one side of the incoming switch position 12 or the outgoing switch position 13 in direction d2. Alternatively, the sampling circuit board 955 is located on one side of the incoming switch position 12 and the outgoing switch position 13 in direction d2.

[0148] like Figure 1-3 As shown, in the first embodiment of the plug-in base, the base unit further includes a control module connection terminal group 50 fixedly mounted on the base 10. Each connection terminal of the control module connection terminal group 50 is used to plug into and electrically connect with each wiring terminal of the control module 940, thereby providing operating power to the control module 940. Furthermore, the control module connection terminal group 50 is electrically connected to the outgoing line side connection terminal group 40.

[0149] Specifically, one end of each connection terminal of the control module connection terminal group 50 protrudes into the outgoing switch position 13 and is used to insert into the control module 940 for electrical connection with each wiring terminal of the control module 940. The control module connection terminal group 50 and the outgoing side connection terminal group 40 are arranged side by side at intervals along direction d1. In the plug-in base of the first embodiment, the connection terminals of the control module connection terminal group 50 are preferably male plug-in terminals, and the wiring terminals of the control module 940 are preferably female plug-in terminals. Figure 6 As shown, the control module 940 also includes a control module wiring terminal 947, which is electrically connected to the control circuit board 942 and plugged into the connection terminal of the control module connection terminal group 50.

[0150] In another embodiment, the connection terminals of the control module connection terminal group 50 are female plug-in terminals, and the wiring terminals of the control module 940 are male plug-in terminals. Each connection terminal of the control module connection terminal group 50 and each wiring terminal of the control module 940 can be implemented using existing technology.

[0151] The first embodiment of the plug-in base includes a communication connection terminal (not shown in the figure) disposed within the outgoing switch position 13. The communication connection terminal is connected to the sampling circuit board 955 of the sampling device 950 and is used to plug into the communication terminal of the control module 940 so that the control module 940 can receive the sampling signal acquired by the sampling device 950. Furthermore, the communication connection terminal and the control module connection terminal group 50 are either an integrated structure or a separate structure.

[0152] The external connection inlet terminal 70 and the external connection outlet terminal 80 may have the same or different structures.

[0153] like Figure 1-2 As shown, in the first embodiment of the plug-in base, the base 10 is further provided with at least one expansion module position 14 for installing an expansion module; the base unit also includes an expansion module connection terminal group 60 fixedly disposed on the base 10, and each connection terminal of the expansion module connection terminal group 60 is used for plugging and electrically connecting with each wiring terminal of the expansion module. Further, when the expansion module needs to draw power from the electrical circuit, that is, when the expansion module needs to obtain working power from the electrical circuit, the expansion module connection terminal group 60 is electrically connected to the incoming line connection terminal group or the incoming line switch connection terminal group. Further, each connection terminal of the expansion module connection terminal group 60 is used for plugging and electrically connecting with each wiring terminal of the expansion module along direction d2, that is, during installation, the expansion module moves along direction d2 so that the wiring terminals of the expansion module are plugged into each connection terminal of the expansion module connection terminal group 60. It should be noted that the plugging direction of each connection terminal of the expansion module connection terminal group 60 and each wiring terminal of the expansion module can be adjusted according to actual needs.

[0154] Specifically, the expansion modules include a data acquisition module and / or a communication module and / or a sensor module, etc. Each module can be selected individually or multiple modules can be configured simultaneously. The sensor module can be an expansion module for collecting ambient temperature and humidity data or an expansion module for detecting smoke, etc. The number of expansion modules is ≥1. The number and function of the expansion modules can be selected by those skilled in the art based on the actual functional design. When the expansion module is a communication module, it is connected to the sampling circuit board 950 of the sampling device 950 to output the signals collected by the sampling device 950.

[0155] Specifically, one end of each connection terminal of the expansion module connection terminal group 60 protrudes within the expansion module position 14 and is used for plugging into and electrically connecting to the wiring terminals of the expansion module; that is, each connection terminal of the expansion module connection terminal group 60 is a male connector, and each wiring terminal of the expansion module is a female connector, and the two are plugged into and electrically connected. It should be noted that, according to actual needs, each connection terminal of the expansion module connection terminal group 60 is set as a female connector, while each wiring terminal of the expansion module is set as a male connector. Furthermore, when the expansion module needs to draw power from the electrical circuit, the expansion module connection terminal group 60 can be electrically connected to the incoming line connection terminal group or the incoming line switch connection terminal group through a copper busbar or other types of wires (e.g., flexible connection).

[0156] Specifically, in the base unit, the expansion module position 14, the inlet switch position 12, and the outlet switch position 13 are arranged side by side along direction d1. It should be noted that the position of the expansion module position 14 is not limited to the one described above. Those skilled in the art can adjust the position of the expansion module position 14 as needed. For example, the expansion module position 14 can be arranged side by side with the meter position 11 along direction d1, or the expansion module position 14 can be located between the meter position 11 and the outlet switch position 13, or the expansion module position 14 can be located between the meter position 11 and the inlet switch position 12, or the expansion module position 14 can be arranged side by side with the inlet position 15 or the outlet position 16 along direction d1, or the expansion module 14 can be located between the inlet position 15 and the outlet position 16 in direction d1.

[0157] like Figure 1-2 As shown, in the first embodiment of the plug-in base, the base unit further includes a meter positioning detection mechanism 91 disposed on the base 10 for detecting whether the electricity meter 910 is properly installed in the meter position 11. Further, the meter positioning detection mechanism 91 is connected to the control module 940 (e.g., connected to the control circuit board 942 of the control module 940). If the meter positioning detection mechanism 91 detects that the electricity meter 910 is not properly installed, it sends a first control signal to the control module 940, and the control module 940 controls the outgoing line switch 930 to open; and / or, if the meter positioning detection mechanism 91 detects that the electricity meter 910 is not properly installed, it issues an alarm signal.

[0158] like Figure 1-2 As shown, in the first embodiment of the plug-in base, the base unit further includes an incoming switch positioning detection mechanism 92 disposed on the base 10 and used to detect whether the incoming switch 920 is properly installed in the incoming switch position 12. Further, the incoming switch positioning detection mechanism 92 is connected to the control module 940 (e.g., connected to the control circuit board 942 of the control module 940). If the incoming switch positioning detection mechanism 92 detects that the incoming switch 920 is not properly installed, it sends a second control signal to the control module 940, and the control module 940 controls the outgoing switch 930 to open; and / or, if the incoming switch positioning detection mechanism 92 detects that the incoming switch 920 is not properly installed, it issues an alarm signal.

[0159] like Figure 1-2As shown, in the plug-in base of the first embodiment, the base unit further includes an outgoing switch positioning detection mechanism 93 disposed on the base 10 and used to detect whether the outgoing switch 930 is installed in the outgoing switch position 13. Further, the outgoing switch positioning detection mechanism 93 is connected to the control module 940 (e.g., connected to the control circuit board 942 of the control module 940). If the outgoing switch positioning detection mechanism 93 detects that the outgoing switch 930 is not installed in place, it sends a third control signal to the control module 940, and the control module 940 controls the outgoing switch 930 to open; and / or, if the outgoing switch positioning detection mechanism 93 detects that the outgoing switch 930 is not installed in place, it issues an alarm signal.

[0160] The base unit is equipped with at least one of the following: a meter arrival detection mechanism 91, an incoming line switch arrival detection mechanism 92, and an outgoing line switch arrival detection mechanism 93. That is, one, any two, or all three of these mechanisms can be selected. It should be noted that the specific methods for the meter arrival detection mechanism 91, the incoming line switch arrival detection mechanism 92, and the outgoing line switch arrival detection mechanism 93 to issue alarm signals and for the control module 940 to drive the outgoing line switch 930 to trip can all be implemented using conventional techniques in the art, and will not be described in detail here.

[0161] If the electricity meter 910 and / or the incoming switch 920 and / or the outgoing switch 930 are installed in the meter position 11 and / or the incoming switch position 920 and / or the outgoing switch position 13 but are not installed in place, the electricity meter 910 and / or the incoming switch 920 and / or the outgoing switch 930 are connected to the circuit, but the corresponding connection terminals and wiring terminals are in a state of loose connection. Long-term operation may cause overheating and damage to the corresponding connection terminals and wiring terminals, or even cause a fire. The plug-in base of the first embodiment can detect whether the electricity meter 910 and / or the incoming switch 920 and / or the outgoing switch 930 are installed in place, thereby ensuring that each electricity meter 910 and / or the incoming switch 920 and / or the outgoing switch 930 is installed in place before being put into use, thus improving safety and reliability.

[0162] Specifically, the meter positioning detection mechanism 91, the incoming line switch positioning detection mechanism 92, and the outgoing line switch positioning detection mechanism 93 can all be implemented using existing technologies. For example, each detection mechanism can be implemented using a micro switch. When the electricity meter 910, the incoming line switch 920, and the outgoing line switch 930 are installed in place, the corresponding micro switch is triggered to switch its working state—for example, switching between a conducting state and an open state, or switching between different conducting states. Alternatively, each detection mechanism may include a position sensor (e.g., a photoelectric position sensor), and the electricity meter 910, the incoming line switch 920, and the outgoing line switch 930 may be detected by their respective position sensors to determine whether they are installed in place.

[0163] Specifically, when the meter placement detection mechanism 91 detects that the electricity meter 910 is not installed in place, it sends an alarm signal through the electricity meter 910 and / or sends an alarm signal to the background control system through an expansion module with communication function; when the incoming line switch placement detection mechanism 92 detects that the incoming line switch 920 is not installed in place, it sends an alarm signal through the electricity meter 910 and / or sends an alarm signal to the background control system through an expansion module with communication function; when the outgoing line switch placement detection mechanism 93 detects that the outgoing line switch 930 is not installed in place, it sends an alarm signal through the electricity meter 910 and / or sends an alarm signal to the background control system through an expansion module with communication function.

[0164] like Figures 29-30As shown, each connection terminal of the meter connection terminal group 20 (including the meter inlet connection terminal 21 and the meter outlet connection terminal 22) has one end for plugging into and electrically connecting to each wiring terminal of the electricity meter 910, and at least a portion of the other end is fixed between the base body 101 of the base 10 and the first cable management cover plate 102, that is, at least a portion of that end of each connection terminal of the meter connection terminal group 20 is covered by the first cable management cover plate 102. The first cable management cover plate 102 is provided with a first shorting hole 1091 and a second shorting hole 1092. The base unit further includes a shorting device 960, which includes a shorting device housing 961 and a shorting member 962 located at least partially within the housing 961. The shorting member 962 includes a first shorting portion 963 and a second shorting portion 964 connected in series, for contacting and electrically connecting with the meter inlet connection terminal 21 and meter outlet connection terminal 22 of the same phase of the energy meter 910. That is, the shorting member 962 is correspondingly and compatible with each phase of the electrical circuit, and the shorting member 962 is connected to the energy meter... Each phase of 910 is configured and electrically connected in a one-to-one correspondence; the meter inlet connection terminal 21, the first shorting part 963, and the first shorting hole 1091 are configured and cooperate in a one-to-one correspondence; the meter outlet connection terminal 22, the second shorting part 964, and the second shorting hole 1092 are configured and cooperate in a one-to-one correspondence; when the shorting device 960 is in the shorting position, the first shorting part 963 contacts and is electrically connected to the corresponding meter inlet connection terminal 21, and the second shorting part 964 contacts and is electrically connected to the corresponding meter outlet connection terminal 22.

[0165] The short-circuiting device 960 can short-circuit the meter inlet connection terminal 21 and meter outlet connection terminal 22 in each phase of the electrical circuit when the electricity meter 910 needs to be replaced or maintained, so that the electricity meter 910 can be removed without power interruption. The short-circuiting device housing 961 can drive multiple short-circuiting components 962 to operate synchronously, improving operating efficiency.

[0166] like Figures 29-30 The diagram shows a first embodiment of the cooperation between the short-circuiting device and the meter inlet terminal group 20:

[0167] One end of the first shorting portion 963 protrudes outside the shorting device housing 961 and is used to pass through the corresponding first shorting hole 1091 to make contact with the corresponding meter inlet connection terminal 21. One end of the second shorting portion 964 protrudes outside the shorting device housing 961 and is used to pass through the corresponding second shorting hole 1092 to make contact with the corresponding meter outlet connection terminal 22. Further, the first shorting portion 963 is used to abut against the meter inlet connection terminal 21 for electrical connection; the second shorting portion 964 is used to abut against the meter outlet connection terminal 22 for electrical connection. In this embodiment, the first shorting portion 963 and the second shorting portion 964 are partially outside the shorting finger 961, therefore the shorting member 962 is partially located within the shorting device housing 961.

[0168] One implementation of the shorting connector 962 is that the shorting connector 962 is an integral metal part, which is formed by bending a metal conductive plate or a columnar metal conductor.

[0169] Another implementation of the shorting connector 962 is as follows: In the shorting connector 962, the first shorting part 963 and the second shorting part 964 are connected together in series by a short wire. The two ends of the shorting wire are respectively welded to the first shorting part 963 and the second shorting part 964 or connected by fasteners, such as screws, bolts or rivets.

[0170] The following is a second embodiment of the cooperation method between the short-circuiting device and the meter connection terminal group 20:

[0171] The shorting member 962 is disposed inside the shorting device housing 961. The shorting device housing 961 has a first housing hole that is configured one-to-one with the first shorting part 963 and a second housing hole that is configured one-to-one with the second shorting part 964. The meter inlet connection terminal 21 includes an inlet terminal shorting part that protrudes through the corresponding first shorting hole 1091 and an outlet terminal shorting part that protrudes through the corresponding second shorting hole 1092. The inlet terminal shorting part is used to make contact and electrical connection with the corresponding first shorting part 963 through the corresponding first housing hole, and the outlet terminal shorting part is used to make contact and electrical connection with the corresponding second shorting part 964 through the corresponding second housing hole. Furthermore, the first shorting part 963 is a female plug-in terminal, and the shorting part of the incoming terminal is a male plug-in terminal. The corresponding first shorting parts 963 are plugged into and electrically connected to the shorting parts of the incoming terminal. The second shorting part 964 is a female plug-in terminal, and the shorting part of the outgoing terminal is a male plug-in terminal. The corresponding second shorting parts 964 are plugged into and electrically connected to the shorting parts of the outgoing terminal.

[0172] In the short-circuiting device 960, the short-circuiting device housing 961 also includes a detection hole corresponding to each short-circuiting component 962. The detection hole is used for inserting a test pen to detect whether the short-circuiting component is energized, so as to prevent the short-circuiting component 962 from failing to short-circuit the corresponding meter inlet connection terminal 21 and meter outlet connection terminal 22, which could cause a power outage when disassembling the electricity meter 910.

[0173] One implementation of the shorting device housing 961 is that the shorting device housing 961 is an injection-molded structure, with parts of each shorting component 962 being injection-molded in the shorting device housing 961, and corresponding detection holes also being formed during the injection molding process.

[0174] Another implementation of the shorting device housing 961 is that the shorting device housing 961 includes two half-shells that are joined together, and the first shorting part 963 and the second shorting part 964 are respectively held by the two half-shells.

[0175] In the first embodiment of the plug-in base, when the short-circuit device 960 is in the short-circuit position, the short-circuit device housing 961 and the corresponding base 10 are in a limiting cooperation to keep the short-circuit device 960 in the short-circuit position, thereby facilitating the operator to perform other operations, such as removing or installing the electricity meter 910.

[0176] like Figure 7-10 As shown and referenced Figure 1-2 As shown in Figures 11-15 and 18, this is the second embodiment of the plug-in base of the present invention.

[0177] like Figure 7-10 As shown, the main difference between the plug-in base of the second embodiment and the plug-in base of the first embodiment lies in the implementation method of the sampling device 950 and the output switch connection terminal group: the sampling device 950 is a module set independently of the base 10, which includes a sampling device housing 958, a sampling device wiring structure, a sampling circuit board 955 set in the sampling device housing 958, and a sampling element connected to the sampling circuit board 955; the sampling device wiring structure includes a first front connection terminal group 951, a first rear connection terminal group 953, a second front connection terminal group 952, and a second rear connection terminal group 954; the first front connection terminal group 951 includes a first front connection terminal, and the first rear connection terminal group 953 includes a first rear connection terminal that is arranged in series with the first front connection terminal; the second front connection terminal group 952 includes a second front connection terminal, and the second rear connection terminal group 954 includes a second rear connection terminal that is arranged in series with the second front connection terminal; the first front connection terminal, the first rear connection terminal, the second front connection terminal, and the second rear connection terminal are all plug-in type connection terminals. Furthermore, the first front connection terminal group 951 and the second front connection terminal group 952 serve as outgoing switch connection terminal groups. Each connection terminal of the first front connection terminal group 951 is used for one-to-one plug-in electrical connection with each outgoing wiring terminal of the outgoing switch 930. Each connection terminal of the second front connection terminal group 952 is used for one-to-one plug-in electrical connection with each outgoing wiring terminal of the outgoing switch 930. Each connection terminal of the first rear connection terminal group 953 is one-to-one plug-in electrical connection with each outgoing side first connection terminal 41. Each connection terminal of the second rear connection terminal group 954 is one-to-one plug-in electrical connection with each outgoing side second connection terminal 42. That is, the first front connection terminal serves as the first connection terminal of the outgoing switch, the first rear connection terminal is plugged into the first connection terminal 41 on the outgoing side, the second front connection terminal serves as the second connection terminal of the outgoing switch, and the second rear connection terminal is plugged into the second connection terminal 42 on the outgoing side.

[0178] The sampling device 950 is configured as an independent module, facilitating its placement and disassembly. Furthermore, the first front connection terminal, the first rear connection terminal, the second front connection terminal, and the second rear connection terminal are all plug-in type terminals, making wiring convenient and quick. It should be noted that the modular design of the sampling device 950 is not limited to metering boxes; it can also be used in other application scenarios, such as control cabinets and power distribution cabinets.

[0179] like Figure 8 and 10 As shown, the first front connection terminal group 951 and the second front connection terminal group 952 are located at one end of the sampling device 950 in direction d2, and the first rear connection terminal group 953 and the second rear connection terminal group 954 are located at the other end of the sampling device 950 in direction d2; the first front connection terminal group 951 and the first rear connection terminal group 953 are arranged sequentially along direction d1, and the second front connection terminal group 952 and the second rear connection terminal group 954 are arranged sequentially along direction d1; the first terminal group 951 and the second front connection terminal group 952 are arranged side by side with intervals along direction d3, and the first rear connection terminal group 953 and the second rear connection terminal group 954 are arranged side by side with intervals along direction d3. Furthermore, the number of the first front connection terminals is ≥2, and the first front connection terminals are arranged side by side with intervals along direction d1; the number of the first rear connection terminals is ≥2, and the first rear connection terminals are arranged side by side with intervals along direction d1; the number of the second front connection terminals is ≥2, and the second front connection terminals are arranged side by side with intervals along direction d1; the number of the second rear connection terminals is ≥2, and the second rear connection terminals are arranged side by side with intervals along direction d1; the first front connection terminals, the first rear connection terminals, the second front connection terminals, and the second rear connection terminals are all plugged into and electrically connected to the corresponding external wiring terminals (i.e., the inlet wiring terminal of the outgoing switch 930, the first connection terminal 41 on the outgoing side, the outgoing wiring terminal of the outgoing switch 930, and the second connection terminal 42 on the outgoing side) along direction d2 respectively.

[0180] Specifically, both the first and second front connection terminals are male connectors. That is, when the sampling device 950 is connected to the electrical circuit, the first and second front connection terminals are used as male connectors when they are plugged into the corresponding wiring terminals (i.e., the inlet and outlet wiring terminals of the outlet switch 930) outside the sampling device 950. One end of the first and second front connection terminals passes through the sampling device housing 958 and protrudes outside the sampling device housing 958. Both the first and second rear connection terminals are female connectors. That is, when the sampling device 950 is connected to the electrical circuit, the first and second rear connection terminals are used as female connectors when they are plugged into the corresponding wiring terminals (i.e., the inlet side connection terminal 41 and the outlet side connection terminal 42) outside the sampling device 950. The sampling device housing 958 is provided with sockets that mate with the first and second rear connection terminals respectively. It should be noted that, depending on actual needs, the first and second front connecting terminals can be replaced with female plug-in connecting terminals, and the first and second rear connecting terminals can be replaced with male plug-in connecting terminals.

[0181] like Figure 8 and 10 As shown, the plane where the sampling circuit board 955 is located is perpendicular to direction d2; in direction d3, the first front connection terminal group 951 and the first rear connection terminal group 953 are located on one side of the sampling circuit board 955, and the second front connection terminal group 952 and the second rear connection terminal group 954 are located on the other side of the sampling circuit board 955.

[0182] like Figure 8 and 10 As shown, each of the current sampling elements 956 is coupled to the wiring structure of the sampling device. Furthermore, the current sampling element 956 is disposed within the sampling device housing 958.

[0183] like Figure 8 and 10 As shown, each of the voltage transformers is coupled to the wiring structure of the sampling device. Furthermore, the voltage transformers are housed within the sampling device 950.

[0184] like Figure 8 and 10 As shown, the residual current transformer 957 is coupled to the sampling device wiring structure. Furthermore, the residual current transformer 957 is housed within the sampling device housing 958.

[0185] In other embodiments, the residual current transformer 957 is coupled to the second connection terminal 42 on each outgoing line side, or the residual current transformer 957 is coupled to the first connection terminal 41 on each outgoing line side. Furthermore, the residual current transformer 957 is disposed within the base 10.

[0186] like Figure 8 and 10 As shown, the first front connection terminal and the corresponding first rear connection terminal are connected in series through a first connecting conductor; the second front connection terminal and the corresponding second rear connection terminal are connected in series through a second connecting conductor.

[0187] Furthermore, when the sampling element includes a current sampling element 956, the current sampling element 956 is a Rogowski coil current transformer, and each current sampling element 956 is sleeved on the corresponding first connecting conductor.

[0188] Furthermore, when the sampling element includes a residual current transformer 957, each of the second connecting conductors passes through the middle of the residual current transformer 957.

[0189] It should be noted that the positions of the current sampling element 956 and the residual current transformer 957 are not limited to the above-described manner. The arrangement of the two can also be changed as follows: the current sampling element 956 is sleeved on the corresponding second connecting conductor, and each first connecting conductor passes through the residual current transformer 957; or, the current sampling element 956 is sleeved on the corresponding first connecting conductor (or second connecting conductor), and each first connecting conductor (or second connecting conductor) passes through the middle of the residual current transformer 957.

[0190] Specifically, the first connecting conductor is composed of a first conductor front section and a first conductor rear section connected together, with one end of the first conductor front section connected to a corresponding first front terminal and the other end connected to one end of the first conductor rear section, and the other end of the first conductor rear section connected to a corresponding first rear terminal; the first conductor front section includes a front section first plate and a front section second plate bent and connected together, with one end of the front section first plate bent and connected to one end of the corresponding first front connecting terminal, and the other end of the front section first plate bent and connected to one end of the front section second plate; the first conductor rear section includes a rear section first plate and a rear section second plate bent and connected together in sequence. The second plate and the rear third plate are connected in the following ways: one end of the rear first plate is connected to the other end of the front second plate; the other end of the rear first plate is bent and connected to one end of the rear second plate; the other end of the rear second plate is bent and connected to one end of the rear third plate; and the other end of the rear third plate is connected to the corresponding second rear connecting terminal. The front second plate is used for mounting the current sampling element 956. The front second plate and the rear third plate are opposite each other along direction d3, limiting the current sampling element 956 axially. The front first plate and the rear second plate are opposite each other along direction d2, limiting the current sampling element 956 radially. The specific structure of the first connecting conductor facilitates the installation of the current sampling element 956 and achieves reliable positioning of the current sampling element 956. Furthermore, the front section of the first conductor and the corresponding first front connecting terminal are an integral structure, for example, the front section of the first conductor and the first front connecting terminal are cut and bent from a metal plate.

[0191] Specifically, the second connecting conductor and the corresponding second front connecting terminal are an integral structure, for example, the second connecting conductor and the second front connecting terminal are cut and bent from a metal plate.

[0192] In another embodiment of the first connecting conductor, the first connecting conductor is a flexible wire or a rigid wire. Furthermore, the first connecting conductor has its own insulating sheath.

[0193] In another embodiment of the second connecting conductor, the second connecting conductor is a flexible wire or a rigid wire. Furthermore, the second connecting conductor has its own insulating sheath.

[0194] like Figure 8 As shown, in the second embodiment of the plug-in base, the sampling circuit board 955 is electrically connected to the sampling device wiring structure, and the sampling circuit board 955 is also used to output power externally. Furthermore, the sampling device 950 also includes a power output terminal, which is electrically connected to the sampling device wiring structure via the sampling circuit board 955. Furthermore, the sampling device housing 958 is provided with a power output hole, and a power output terminal is disposed within the power output hole; preferably, the power output terminal is a plug-in type connection terminal.

[0195] Specifically, the control circuit board 942 of the control module 940 is electrically connected to the sampling circuit board 955 to obtain the operating power and / or the sampling signal obtained by the sampling device. When the control module 940 obtains the operating power through the sampling circuit board 955, the plug-in base of the second embodiment does not have a control module connection terminal group 50.

[0196] In another embodiment, when the plug base of the second embodiment includes a current sampling element 956, the current sampling element 956 is a manganese copper shunt connected in series with the first connecting conductor or the second connecting conductor.

[0197] In practical use, the second embodiment of the plug-in base preferably assembles the sampling device 950 and the corresponding output switch 930 together, and then inserts the whole into the corresponding output switch position 13. The first rear connection terminal is plugged into the corresponding output side first connection terminal 41 for electrical connection, and the second rear connection terminal is plugged into the corresponding output side second connection terminal 42 for electrical connection.

[0198] The following is a third embodiment of the plug-in base of the present invention, which differs from the plug-in base of the first embodiment in that the base unit of the plug-in base in the third embodiment does not have a sampling device 950. Furthermore, the sampling device 950 is integrated with the outgoing switch 930.

[0199] The following is a fourth embodiment of the plug-in base of the present invention, which differs from the plug-in base of the first embodiment in that: Figure 27As shown: The base 10 does not have an inlet switch position 12, an inlet switch first connection terminal, an inlet position 15, an inlet connection terminal group, or an inlet cover plate group 106; The base 10 includes an inlet switch avoidance notch 9211 for avoiding the inlet switch 920 and corresponding to the outlet switch position 13; The inlet switch second connection terminal is located within the corresponding inlet switch avoidance notch 9211.

[0200] Furthermore, the corresponding outgoing switch positions 13 and incoming switch clearance gaps 9211 are arranged side by side along direction d1, and the corresponding outgoing switch positions 13 and incoming switch clearance gaps 9211 are arranged side by side with the corresponding meter positions 11 along direction d3.

[0201] The second connecting terminal of the incoming line switch is plugged into and electrically connected to the outgoing terminal of the incoming line switch 920 along direction d2 or direction d3. In the plug-in base of the fourth embodiment, the second connecting terminal of the incoming line switch is preferably plugged into and electrically connected to the outgoing terminal of the incoming line switch 920 along direction d3.

[0202] The following is a fifth embodiment of the plug-in base of the present invention, which differs from the plug-in base of the second embodiment in that: Figure 27 As shown: The base 10 does not have an inlet switch position 12, an inlet switch first connection terminal, an inlet position 15, an inlet connection terminal group, or an inlet cover plate group 106; The base 10 includes an inlet switch avoidance notch 9211 for avoiding the inlet switch 920 and corresponding to the outlet switch position 13; The inlet switch second connection terminal is located within the corresponding inlet switch avoidance notch 9211.

[0203] Furthermore, the corresponding outgoing switch positions 13 and incoming switch clearance gaps 9211 are arranged side by side along direction d1, and the corresponding outgoing switch positions 13 and incoming switch clearance gaps 9211 are arranged side by side with the corresponding meter positions 11 along direction d3.

[0204] The second connecting terminal of the incoming line switch is plugged into and electrically connected to the outgoing terminal of the incoming line switch 920 along direction d2 or direction d3. In the plug-in base of the fifth embodiment, the second connecting terminal of the incoming line switch is preferably plugged into and electrically connected to the outgoing terminal of the incoming line switch 920 along direction d3.

[0205] like Figure 28As shown, this is the sixth embodiment of the plug-in base of the present invention. The difference between the plug-in base of the fourth or fifth embodiment is that: in the plug-in base of the sixth embodiment, the base unit does not have the meter inlet connection terminal 21 and the second copper busbar 120. The inlet switch 920 is located in the inlet switch clearance notch 9211. The outlet terminal of the inlet switch 920 and the inlet terminal of the energy meter 910 are directly connected one-to-one by a conductor. The external conductor of the inlet is directly electrically connected to the inlet terminal of the inlet switch 920.

[0206] like Figure 25-26 The image shows the seventh embodiment of the plug-in base of the present invention.

[0207] In the seventh embodiment of the plug-in base, the number of base units n in the base unit group is greater than or equal to 2. Each base unit has the same structure and is arranged side by side at intervals along the direction d1. Each base unit has the same structure as the base unit in the first embodiment, the second embodiment or the third embodiment. The base body 101 of the base 10 of each base unit is an integral structure.

[0208] The following is the eighth embodiment of the plug-in base of the present invention.

[0209] In the plug-in base of the eighth embodiment, the number of base units n in the base unit group is greater than or equal to 2. Each base unit has the same structure and is arranged side by side at intervals along the direction d1. Each base unit has the same structure as the base unit in the fourth embodiment, the fifth embodiment or the sixth embodiment. The base body 101 of the base 10 of each base unit is an integral structure.

[0210] like Figure 16-17 As shown in Figures 19-24, this is the ninth embodiment of the plug-in base of the present invention.

[0211] like Figure 16-17 As shown in Figures 19-24, the difference between the plug-in base of the ninth embodiment and the plug-in base of the seventh embodiment is that in the plug-in base of the ninth embodiment, the number of base units n in the base unit group is ≥ 2.

[0212] The base unit group includes an inlet position 15 disposed on the base 10 of one base unit, rather than having an inlet position 15 disposed on the base 10 of each base unit. The base 10 where the inlet position 15 is located is the first base, that is, the base 10 with the inlet position 15 is the first base, and the base unit corresponding to the first base is the first base unit. The inlet connection terminal group disposed in the inlet position 15 is the main inlet connection terminal group. The inlet switch connection terminal group of each base unit is electrically connected to the inlet connection terminal group in the inlet position 15. That is, the inlet switch connection terminal groups of each base unit are electrically connected to the main inlet connection terminal group in parallel with each other, and each connection terminal of each inlet switch connection terminal group is electrically connected to each connection terminal of the main inlet connection terminal group.

[0213] In the ninth embodiment of the plug-in base, each base unit in the same base unit group shares the inlet position 15 and the inlet connection terminal group, which helps to simplify the structure and reduce the number of parts, further simplifying the wiring operation.

[0214] like Figure 16 , 19 As shown in -20, 22, 23, and 25, in the first base, the inlet position 15 is arranged side by side with the inlet switch position 12 in the direction d3 and sequentially with the outlet switch position 13 in the direction d1. The inlet position 15 and the meter position 11 are located on both sides of the inlet switch position 12 in the direction d3.

[0215] like Figure 16-17 As shown in Figures 19-20, 22, and 24, the base unit group also includes a fifth copper busbar 150. The number of fifth copper busbars 150 is the same as the number of phases of the electrical circuit and the number of external connection incoming terminals 70. Each fifth copper busbar 150 includes a fifth copper busbar plug-in section 1501, a fifth copper busbar intermediate section 1502, and a fifth copper busbar mating section 1503. One end of the fifth copper busbar plug-in section 1501 and the fifth copper busbar mating section 1503 are connected to the fifth copper busbar intermediate section 1502. The fifth copper busbar plug-in section 1501 serves as the first connection terminal of the incoming switch, and the number of fifth copper busbar plug-in sections 1501 in each fifth copper busbar 150 is the same as the number of incoming switch connection terminal groups (i.e., the same as the number of base units). The fifth copper busbar mating section 1503 is electrically connected to the corresponding external connection incoming terminal 70, and the number of both is the same. Furthermore, the first base also includes an inlet cover plate group 106 stacked with the corresponding base body 101 along direction d2; the projection direction of the base unit group is the orthogonal projection of direction d2, and the inlet cover plate group 106 blocks the corresponding fifth copper bus mating end 1503 and the corresponding inlet connection terminal group; the base unit group also includes an intermediate cable management plate group 108 stacked with each base body 101 along direction d2 and fixedly mated with the base body 101; the projection direction of the base unit group is the orthogonal projection of direction d2, and the middle section of the fifth copper bus is blocked by the intermediate cable management plate group 108.

[0216] The base unit group is provided with fifth copper busbar holes (not shown in the figure) that correspond one-to-one with the fifth copper busbars 150. The middle section 1502 of the fifth copper busbar 150 is set in the corresponding fifth copper busbar hole, which not only realizes the reliable positioning of each fifth copper busbar, but also ensures the insulation performance between each fifth copper busbar. Furthermore, the fifth copper busbar hole is formed by each base 10 and the intermediate cable management plate group 108.

[0217] Specifically, such as Figures 19-20As shown in Figures 22 and 24, the electrical circuit is a two-phase electrical circuit; in the base unit, the incoming switch position 12 is positioned in direction d3 relative to the outgoing switch position 13 and close to the meter position 11; the middle section 1502 of the fifth copper busbar passes through the outgoing switch position 13 between adjacent incoming switches 12, and also passes between the first connecting terminal 41 and the second connecting terminal 42 on the outgoing side between adjacent incoming switches 12; the projection direction of the plug-in base is the orthogonal projection of direction d2 and the projection direction of the base unit group is the orthogonal projection of direction d2, the middle section 1502 of the fifth copper busbar is blocked by the middle cable management plate group 108, and the external incoming terminal 70 is blocked by the corresponding incoming cover plate group 106; in the base unit group, the base body 101, the middle cable management plate group 108 and the first cable management cover plate 102 cooperate to form an incoming switch cavity for the incoming switch 920 to be inserted in direction d2. Furthermore, the number of base units n=2, one being a first base unit and the other a second base unit; the inlet switch position 12, the outlet switch position 13, the inlet switch position 14, and the outlet switch position 15 of the first base unit are sequentially arranged along direction d1; the inlet position 15 is positioned in direction d3 closer to the meter position 11 than the outlet position 16; the projection direction of each base unit is an orthogonal projection of direction d1, with the inlet switch first connection terminal, the outlet switch first connection terminal, the inlet switch second connection terminal, and the outlet switch second connection terminal 14 aligned along direction d1. The wires are arranged side by side at intervals along direction d3 and are gradually moved away from the meter position 11 along direction d3; the intermediate wire management plate group 108 includes a second wire management cover plate 104 stacked with each base body 101 along direction d2; the projection direction of the insertion base is the orthogonal projection of direction d2 and the projection direction of the base unit group is the orthogonal projection of direction d2, and the middle section 1502 of the fifth copper busbar is blocked by the second wire management cover plate 104; in the base unit group, the second wire management cover plate 104, the first wire management cover plate 102 and the base body 101 cooperate to form an incoming switch cavity in which each incoming switch 920 is inserted along direction d2. Furthermore, the intermediate cable management plate assembly 108 also includes a third cable management cover plate 105; each of the fifth copper busbar intermediate sections 1502 is located between the first connection terminal and the second connection terminal of the outgoing switch of the first base unit in direction d3 and is arranged side by side in sequence along direction d3; the third cable management cover plate 105 is located between the second cable management cover plate 104 and the corresponding first base in direction d2; in direction d3, the fifth copper busbar intermediate section 1502 closest to the first connection terminal of the outgoing switch of the first base unit is the uppermost intermediate section; the third cable management cover plate 105 covers the uppermost intermediate section, separating the uppermost intermediate section from the first connection terminal of the outgoing switch of the first base unit. Furthermore, the fifth copper busbar 150 is an integral structure.

[0218] Specifically, such as Figure 16-17As shown, the electrical circuit is a four-phase circuit; in the base unit, the incoming switch position 12 and the outgoing switch position 13 are arranged side by side; in the direction d3, the middle section 1502 of the fifth copper busbar passes through one side of the outgoing switch position 13 between two adjacent incoming switch positions 12, and the other side of the outgoing switch position 13 between two adjacent incoming switch positions 12 is provided with a meter position 11; on the orthogonal projection of the projection direction of the plug-in base, the middle section 1502 of the fifth copper busbar is blocked by the middle cable management plate group 108. Further, the outgoing positions 16 of each base unit are arranged side by side along the direction d3; the outgoing switch position 13 located between two adjacent incoming switch positions 12 is the adjacent outgoing switch position, and the outgoing position 16 corresponding to the adjacent outgoing switch position and the middle section 1502 of the fifth copper busbar are respectively located on both sides of the middle cable management plate group 108 in the direction d2; the incoming position 15 is set away from the meter position 11 relative to the outgoing position 16 in the direction d3. Furthermore, the number of base units n=2, one being a first base unit and the other a second base unit; the outgoing switch position 13 of the first base unit, the incoming switch position 12 of the first base unit, the outgoing switch position 13 of the second base unit, and the incoming switch position of the second base unit are arranged side by side along direction d1; the outgoing position 16 of the first base unit and the outgoing position 16 of the second base unit are arranged side by side along direction d1; the incoming position 15 is located between the outgoing positions 16 of the first base unit and the outgoing positions 16 of the second base unit in direction d1; and the incoming position 15 is located away from the meter position 11 relative to the outgoing position 16 in direction d3; the fifth copper busbar intermediate section 1502 includes an intermediate section first part, an intermediate section second part, and an intermediate section third part. The third section has three intermediate sections: the first section extends along direction d1, the second section extends along direction d1, and the third section extends along direction d3. One end of the first section is connected to the first connection terminal 31 on the incoming line side of the corresponding second base unit, and the other end is connected to one end of the second section. The other end of the second section is connected to the middle of the third section. One end of the third section is connected to the first connection terminal 31 on the corresponding first base unit, and the other end is electrically connected to the corresponding external connection terminal 70. The projection direction of the base unit group is the orthogonal projection of direction d1. Each first section is arranged side by side and spaced along direction d1, each second section is arranged side by side and spaced along direction d1, and each third section is arranged side by side and spaced along direction d1. Furthermore, in the fifth copper busbar intermediate section 1502, the first part of the intermediate section is perpendicularly connected to the second part of the intermediate section, and the second part of the intermediate section is perpendicularly connected to the third part of the intermediate section; each of the intermediate sections is arranged side by side with the fourth copper busbar 140 of the second base unit along direction d2; each of the fifth copper busbar intermediate sections 1502 is located on the same side of the incoming switch position 12 and the outgoing switch position of each base unit in direction d3.

[0219] It should be noted that in the description of this invention, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship conventionally placed during use. They are used only for ease of description and do not indicate that the device or element referred to must have a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating relative importance.

[0220] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A plug-in base, comprising a copper bus circuit structure, the copper bus circuit structure comprising an incoming line connection terminal group (30), a meter connection terminal group (20) and an outgoing line connection terminal group (40) connected in series in the same electrical circuit; the meter connection terminal group (20) comprises a meter incoming line connection terminal (21) that is plugged into and electrically connected to the incoming line terminal of an energy meter (910) one-to-one and a meter outgoing line connection terminal (22) that is plugged into and electrically connected to the outgoing line terminal of an energy meter (910) one-to-one; the incoming line connection terminal group (30) comprises a plug-in type incoming line second connection terminal (32); the outgoing line connection terminal group (40) comprises a plug-in type outgoing line first connection terminal (41); Its features are: The copper busbar circuit structure further includes a second copper busbar (120) and a third copper busbar (130); one end of each second copper busbar (120) is connected to and electrically connected to the corresponding meter inlet connection terminal (21), and the other end serves as the inlet side second connection terminal (32); one end of each third copper busbar (130) is connected to and electrically connected to the corresponding meter outlet connection terminal (22), and the other end serves as the outlet side first connection terminal (41).

2. The plug-in base according to claim 1, characterized in that: The meter inlet connection terminal (21) and meter outlet connection terminal (22) are alternately arranged along direction d1. The second connection terminals (32) on each inlet side are arranged side by side with intervals along direction d1. The first connection terminals (41) on each outlet side are arranged side by side along direction d1. The second connection terminals (32) on the inlet side and the first connection terminals (41) on the outlet side are arranged in sequence along direction d1. The second connection terminals (32) on the inlet side and the first connection terminals (41) on the outlet side are located on one side of the meter connection terminal group (20) in direction d3. The directions d1 and d3 are perpendicular to each other.

3. The plug-in base according to claim 2, characterized in that: The second copper busbar (120) includes a second copper busbar head section (1201), a second copper busbar middle section (1202), and a second copper busbar tail section (1203) connected in sequence. The second copper busbar head section (1201) is connected and electrically connected to the corresponding meter inlet connection terminal (21). The second copper busbar tail section (1203) serves as the corresponding inlet side second connection terminal (32). The third copper busbar (130) includes a third copper busbar head section (1301), a third copper busbar middle section (1302), and a third copper busbar tail section (1303) connected in sequence. The third copper busbar head section (1301) is connected and electrically connected to the corresponding meter outlet connection terminal (22). The third copper busbar tail section (1303) serves as the corresponding outlet side first connection terminal (41). The projection direction of the copper busbar circuit structure is the orthogonal projection of direction d1 or d3, and the middle section of the second copper busbar (1202) and the middle section of the third copper busbar (1302) are arranged side by side along direction d2; The directions d1, d2, and d3 are perpendicular to each other.

4. The plug-in base according to claim 3, characterized in that: The projection direction of the copper busbar circuit structure is an orthogonal projection of direction d1. The first segments (1201) of each second copper busbar overlap, the first segments (1301) of each third copper busbar overlap at least partially, the first segments (1201) of the second copper busbar and the first segments (1301) of the third copper busbar overlap at least partially, the last segments (1203) of each second copper busbar overlap at least partially, the last segments (1303) of the third copper busbar overlap at least partially, and the last segments (1203) of the second copper busbar and the last segments (1303) of the third copper busbar overlap at least partially or are arranged side by side at intervals along direction d3.

5. The plug-in base according to claim 3, characterized in that: The copper busbar circuit structure also includes an insulating partition plate (103), which is located between the middle section of the second copper busbar (1202) and the middle section of the third copper busbar (1302) in the direction d2; The projection direction of the copper busbar circuit structure is an orthogonal projection of direction d2. Part of the second copper busbar middle section (1202) and part of the third copper busbar middle section (1302) are intersected. The insulating partition plate (103) separates at least the part where the second copper busbar middle section (1202) and the third copper busbar middle section (1302) intersect.

6. The plug-in base according to claim 5, characterized in that: The projection direction of the copper busbar circuit structure is the orthogonal projection of direction d2. At least a portion of the middle section (1202) of the second copper busbar overlaps with the insulating partition plate (103), and at least a portion of the middle section (1302) of the third copper busbar overlaps with the insulating partition plate (103). The insulating partition plate (103) is provided with a second copper busbar slot for inserting the middle section (1202) of the second copper busbar and a third copper busbar slot for inserting the middle section (1302) of the third copper busbar.

7. The plug-in base according to claim 2, characterized in that: The copper busbar circuit structure also includes pluggable first connection terminals (31) on the input side that are configured one-to-one with the second connection terminals (32) on the input side; the copper busbar circuit structure also includes first copper busbars (110) that are configured one-to-one with the first connection terminals (31) on the input side, one end of each first copper busbar (110) serves as the first connection terminal (31) on the input side, and the other end is used for electrical connection with the external conductor of the input line; each of the first connection terminals (31) on the input side is arranged side by side with intervals along direction d1, and the corresponding first connection terminals (31) on the input side and the second connection terminals (32) on the input side are arranged side by side with intervals along direction d3.

8. The plug-in base according to claim 2, characterized in that: The copper busbar circuit structure also includes a pluggable first connection terminal (31) on the input side, which is configured one-to-one with the second connection terminal (32) on the input side; when the number of copper busbar circuit structures of the plug-in base is ≥2, the plug-in base also includes a fifth copper busbar (150) configured one-to-one with the copper busbar circuit structure, and each fifth copper busbar (150) includes a fifth copper busbar plug-in section (1501), a fifth copper busbar intermediate section (1502), and a fifth copper busbar mating section (1503). One end of the plug-in section (1501) and the fifth copper bus mating section (1503) are both connected to the middle section (1502) of the fifth copper bus. The fifth copper bus plug-in section (1501) serves as the first connection terminal (31) on the incoming line side. The number of fifth copper bus plug-in sections (1501) of each fifth copper bus (150) is the same as the number of connection terminal groups (30) on the incoming line side. The corresponding first connection terminal (31) on the incoming line side and second connection terminal (32) on the incoming line side are arranged side by side at intervals along direction d3.

9. The plug-in base according to claim 2, characterized in that: The copper busbar circuit structure also includes a pluggable second connection terminal (42) on the outgoing side; the copper busbar circuit structure also includes a fourth copper busbar (140) that corresponds one-to-one with the first connection terminal (41) on the outgoing side, one end of the fourth copper busbar (140) serves as the second connection terminal (42) on the outgoing side, and the other end is used for electrical connection with the external conductor of the outgoing line.

10. The plug-in base according to claim 1, characterized in that: Each connection terminal of the meter connection terminal group (20) is used to be plugged into and electrically connected to each wiring terminal of the energy meter (910) along direction d3 or direction d2; each connection terminal of the incoming line side connection terminal group (30) is used to be plugged into and electrically connected to the corresponding external wiring terminal along direction d2; each connection terminal of the outgoing line side connection terminal group (40) is used to be plugged into and electrically connected to the corresponding external wiring terminal along direction d2. The directions d1, d2, and d3 are perpendicular to each other.

Images