CN114778916A - Anti-magnetic field current divider, electric power meter thereof and manufacturing method of anti-magnetic field current divider - Google Patents
Anti-magnetic field current divider, electric power meter thereof and manufacturing method of anti-magnetic field current divider Download PDFInfo
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- CN114778916A CN114778916A CN202210302751.3A CN202210302751A CN114778916A CN 114778916 A CN114778916 A CN 114778916A CN 202210302751 A CN202210302751 A CN 202210302751A CN 114778916 A CN114778916 A CN 114778916A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000005070 sampling Methods 0.000 claims abstract description 132
- 230000005291 magnetic effect Effects 0.000 claims abstract description 37
- 230000005292 diamagnetic effect Effects 0.000 claims description 29
- 238000004891 communication Methods 0.000 claims description 7
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 1
- SXHLTVKPNQVZGL-UHFFFAOYSA-N 1,2-dichloro-3-(3-chlorophenyl)benzene Chemical compound ClC1=CC=CC(C=2C(=C(Cl)C=CC=2)Cl)=C1 SXHLTVKPNQVZGL-UHFFFAOYSA-N 0.000 description 16
- 238000010586 diagram Methods 0.000 description 11
- 239000000306 component Substances 0.000 description 6
- 230000000149 penetrating effect Effects 0.000 description 5
- 229910000896 Manganin Inorganic materials 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 239000008358 core component Substances 0.000 description 1
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- 238000011173 large scale experimental method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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- 238000012216 screening Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/146—Measuring arrangements for current not covered by other subgroups of G01R15/14, e.g. using current dividers, shunts, or measuring a voltage drop
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/20—Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
- G01R1/203—Resistors used for electric measuring, e.g. decade resistors standards, resistors for comparators, series resistors, shunts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R3/00—Apparatus or processes specially adapted for the manufacture or maintenance of measuring instruments, e.g. of probe tips
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/2806—Apparatus therefor, e.g. test stations, drivers, analysers, conveyors
- G01R31/2808—Holding, conveying or contacting devices, e.g. test adapters, edge connectors, extender boards
Abstract
The invention relates to a magnetic field resistant current divider, a power instrument thereof and a manufacturing method of the magnetic field resistant current divider, wherein the magnetic field resistant current divider comprises a current divider and a PCB board, the current divider comprises a current inflow end, a resistor body and a current outflow end which are electrically connected in sequence, the current divider is sequentially provided with a voltage end, a first sampling end and a second sampling end, and the first sampling end and the second sampling end are respectively arranged at two sides of the center of an effective resistor body; be equipped with voltage circuit end, first sampling circuit end, second sampling circuit end on the PCB board, it serves the reclamation circuit that transversely extends to between the second sampling circuit end position from first sampling circuit to enclose to be equipped with in the PCB board, enclose the reclamation circuit and transversely divide into two piece upper and lower the same areas to the effective resistor body perpendicularly, it is corresponding to enclose the area of establishing with the effective resistor body and vertically receive external magnetic field to dry up the area. Therefore, the accuracy of the magnetic field resistance of the instrument load current in milliampere level can be improved.
Description
Technical Field
The invention relates to a diamagnetic field shunt used in an electric power instrument, an electric power instrument thereof and a manufacturing method of the diamagnetic field shunt, in particular to a diamagnetic field shunt which is suitable for the field of electric energy transmission, an electric power instrument thereof and a manufacturing method of the diamagnetic field shunt thereof.
Background
The current diverter has the advantages of high metering accuracy, small temperature influence and low cost, and is widely applied to single-phase intelligent electric energy meters, in particular to manganin diverters; due to the characteristics of the installation position of the shunt and the connection of the sampling lead, the manganin shunt can generate induced current when being interfered by a power frequency magnetic field, and the accuracy of current metering can be seriously influenced.
The traditional manganin shunt carries out current sampling through a piece of manganin alloy, and the wiring is more dispersed, and the twisted pair of novel shunt needs to carry out point gluing fixed position or to make it difficult loose with the fixed shape of pyrocondensation pipe, and this is not only consuming time and power, still is unfavorable for automated production. The enterprise standard of the electric energy meter is revised by national grid company in 2013, and in a Q/GDW 1364-2013 'technical Specification of Single-phase Intelligent electric energy meter' influence quantity test, an 'electric energy meter voltage circuit is added with 115% Un, no current exists in a current loop, a 0.5mT power frequency magnetic field is applied to the most sensitive position of the electric energy meter under the influence of the magnetic field, and the electric energy meter is prevented from generating more than 1 pulse output within 20 times of theoretical starting time'. The introduction of this standard has prompted the electric energy meter industry to actively seek solutions to improve the electromagnetic interference resistance of electric energy meters.
At present, according to the latest requirements of domestic and external electric energy meter industries, higher requirements are provided for the magnetic field interference resistance of the electric energy meter with small working current, and particularly, when the working current is 20mA or below, under the condition of magnetic field interference with the strength of 0.5mT from an uncertain direction, how to improve the accuracy of electric power detection is a problem which needs to be solved urgently in the industry.
Therefore, there is a need for an improved magnetic shunt and its power meter to improve the ability of the shunt to resist power frequency magnetic field interference.
Disclosure of Invention
The invention aims to provide an anti-magnetic field current divider capable of resisting power frequency magnetic field interference under a small working current, a power meter thereof and a manufacturing method of the anti-magnetic field current divider.
In order to achieve the technical purpose, the invention adopts the following technical scheme: a magnetic field resistant current divider comprises a current divider and a PCB board, wherein the PCB board is installed on the current divider in a close-fitting manner, the current divider comprises a current inflow end, a resistor body and a current outflow end which are electrically connected in sequence, the current divider is sequentially provided with a voltage end, a first sampling end and a second sampling end along the current flowing direction, and the first sampling end and the second sampling end are respectively arranged on two sides of the center of a longitudinal effective resistor body along the current flowing direction; be equipped with on the PCB board and be used for electric connection respectively corresponding to voltage line end, first sampling end, the voltage line end of second sampling end, first sampling line end, second sampling line end on the shunt, the PCB board is equipped with the first side of pressing close to the shunt and the second side relative with the first side, it serves the line of enclosing and reclaiming that transversely extends to second sampling line end position from first sampling line to be equipped with in the PCB board, enclose and reclaim the line and transversely divide into two piece upper and lower the same areas to effective resistive element perpendicularly, it is corresponding to enclose the area of establishing with effective resistive element and vertically receive external magnetic field to do up the area.
As a further improvement of the present invention, the reclamation line includes a first section located on the first side surface for electrically connecting the first sampling terminal and extending toward the second sampling line terminal, a second section connecting the first section and traversing the PCB to the second side surface and approaching the second sampling line terminal, a third section located on the second side surface connecting the second section and revolving and extending in a reverse direction toward the first sampling line terminal, a fourth section connecting the third section and traversing the PCB to the first side surface and approaching the first sampling line terminal, and a fifth section located on the first side surface connecting the fourth section and extending toward the second sampling line terminal, the first section being electrically separated from the fifth section.
As a further improvement of the present invention, the first segment includes a linear first leading-out portion connected to the first sampling line end, the second segment includes a connecting portion vertically penetrating through the PCB, the third segment includes a linear upper leading-back portion and an upper surrounding portion connected to the upper leading-back portion and annularly surrounding the periphery of the first sampling line end, the fourth segment includes a revolving portion connected to the upper surrounding portion and vertically penetrating through the PCB, the fifth segment includes a first lower surrounding portion surrounding the periphery of the first sampling line end, two linear second leading-out portions extending from the first lower surrounding portion, and a second lower surrounding portion connecting the two second leading-out portions and surrounding the periphery of the second sampling line end, and the second leading-out portions are distributed on both sides of the first leading-out portion.
As a further improvement of the present invention, the turn portion and the second sampling line end are located on both sides of the first sampling line end.
As a further improvement of the present invention, a first leading-out terminal is disposed on the first side surface of the second lower surrounding portion, a second leading-out terminal is disposed on the second side surface of the second sampling terminal, and the first leading-out terminal and the second leading-out terminal are disposed on the first side surface and the second side surface of the PCB correspondingly.
As a further improvement of the present invention, the upper surrounding portion and the first lower surrounding portion are disposed on the first side surface and the second side surface of the PCB board, respectively.
As a further improvement of the present invention, the voltage end, the first sampling end and/or the second sampling end is/are in a shape of a protruding point protruding laterally from the shunt, the PCB is at least a double-sided perforated board, the voltage line end, the first sampling line end and/or the second sampling line end are/is in a shape of a metal loop hole provided with a via hole, and the voltage end, the first sampling line end and/or the second sampling line end are/is arranged in the voltage line end, the first sampling line end and/or the second sampling line end in a penetrating manner to achieve electrical connection.
As a further improvement of the invention, an electrical information module is packaged on the PCB, and the electrical information module comprises a filter element and an AD chip and extends out of two grounding lines.
The invention also provides the following technical scheme for realizing the purpose of the invention:
an electric instrument comprises an electric instrument shell and the anti-magnetic field current divider positioned in the electric instrument shell.
The invention also provides the following technical scheme for realizing the purpose of the invention:
the manufacturing method of the diamagnetic field shunt comprises the steps of respectively manufacturing the shunt and the PCB;
manufacturing the PCB, wherein the PCB comprises a main board part and a communication end, and arranging the reclamation line on the main board part of the PCB;
electrically connecting the upper voltage end, the first sampling end and the second sampling end of the shunt with the voltage circuit end, the first sampling circuit end and the second sampling circuit end on the PCB respectively;
and arranging components on the PCB main board part to form a PCB module, and packaging the PCB module to expose the communication end.
Compared with the prior art, the reclamation line transversely extending from the upper end of the first sampling line to the end of the second sampling line is arranged in the PCB, the reclamation line vertically and transversely divides the effective resistor body into an upper area and a lower area which are the same, and the area enclosed by the reclamation line corresponds to the area of the effective resistor body which is longitudinally subjected to the interference of an external magnetic field. So set up, the interference killing feature is strong, the reliability is high, works as anti magnetic field current divider is even when being applied to minimum operating current, and in the face of stronger magnetic field interference, its ammeter precision difference can be minimum.
Drawings
Fig. 1 is a schematic structural diagram of a diamagnetic field splitter and a PCB according to a first embodiment of the present invention.
Fig. 2 is an exploded view of the structure of fig. 1.
Fig. 3 is a schematic structural diagram of the first embodiment of the anti-magnetic field shunt and the terminal after being installed.
Fig. 4 is a schematic structural diagram of the PCB of fig. 3 after packaging.
Fig. 5 is a schematic structural view of the PCB of the present invention after mounting electronic components thereon.
Fig. 6 is a schematic structural diagram of the diamagnetic field splitter and a PCB board mounted with electronic components according to the first embodiment of the invention.
FIG. 7 is a schematic diagram of a reclamation circuit of a PCB board according to the present invention.
Fig. 8 is a front view of the first embodiment of the anti-magnetic field splitter of the present invention.
Fig. 9 is a top view of the anti-magnetic field shunt and the PCB according to the first embodiment of the present invention.
Fig. 10 is a schematic view of the magneto resistive field splitter of the present invention in cooperation with a reclamation line.
Fig. 11 is a schematic structural diagram of the diamagnetic field splitter and a PCB according to the second embodiment of the present invention.
Fig. 12 is an exploded view of the structure of fig. 11.
Fig. 13 is a schematic structural view of the PCB of fig. 11 after packaging.
Fig. 14 is a schematic structural diagram of the diamagnetic field splitter and a PCB according to the third embodiment of the present invention.
Fig. 15 is an exploded view of the structure of fig. 14.
Fig. 16 is a schematic diagram of the PCB of fig. 14 after packaging.
Reference numerals:
Connecting hole 131 of current outflow end 13
Second sampling end 16 PCB module 2
PCB board 20 mainboard end 201
First sampling line port 2011 reclamation line 21
Lead-back 2131 of third segment 213
The fifth section 215 of the turn portion 2141
First lower surrounding part 2151 and second lead-out part 2152
Second lower surrounding portion 2153 and first leading-out end 2154
Second sampling line side 22 second outlet 221
Terminal 3, 4 fixing hole 31, 42
Connecting hole 3002
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the field of shunt application, great knowledge is given to the problems in the prior art by the Vida electronics Co., Ltd as a supplier skilled in market demand in the industry, and the research and development team further invests huge investment on the original technology owned by the supplier, performs a long-time and large-scale experiment, scheme screening and a large amount of customer investigation, and finally obtains the technical scheme of the invention.
Fig. 1 to 16 are schematic structural diagrams of the diamagnetic field splitters 100, 200 and 300 according to the present invention. Referring to fig. 1 to 10, in a first embodiment, a diamagnetic field splitter 100 includes a splitter 1 and a PCB 20, the PCB 20 is mounted on the splitter 1 in close proximity, the splitter 1 includes a current inlet 11, a resistor 12, and a current outlet 13, which are electrically connected in sequence, the splitter 1 is provided with a voltage terminal 14, a first sampling terminal 15, and a second sampling terminal 16 in sequence along a current flowing direction, and the first and second sampling terminals 15, 16 are respectively disposed on two sides of a center of a longitudinal effective resistor 12 along the current flowing direction; be equipped with on the PCB board 20 and be used for electric connection to correspond to respectively voltage line end 23, first sampling line end 2011, second sampling line end 22 of voltage end 14, first sampling end 15, second sampling end 16 on the shunt 1, PCB board 20 is equipped with the first side 24 that presses close to shunt 1 and the second side 25 relative with first side 24, be equipped with in the PCB board 20 from first sampling line end 2011 on lateral extension to the second sampling line end 22 position enclose and cultivate line 21, enclose and cultivate line 21 perpendicular to effective resistor body 12 horizontal division two piece upper and lower the same area, the area that encloses and cultivate the line and vertically receive external magnetic field to dry up the area corresponding with effective resistor body. So set up, reclamation circuit 21 divides into the region that the area is the same with effective resistor body 12 on the PCB board 20, when facing to under the high strength magnetic field interference in the uncertain direction, the electric current that effective resistor body 12 cut magnetic induction line and produce can with the electric current that reclamation circuit 21 cut magnetic induction line and produce offsets, work as anti magnetic field shunt 100 even be applied to minimum operating current and face stronger magnetic field interference, its ammeter precision difference still can be minimum, for example at operating current 20mA or below, under the intensity is 0.5mT magnetic field interference, the ammeter precision error of anti magnetic field shunt 100 can be less than 10%, so can realize the electric power instrument and extremely good anti magnetic field interference under minimum operating current.
The reclamation line 21 includes a first section 211 on the first side 24 for electrically connecting the first sampling terminal 15 and extending toward the second sampling line terminal 22, a second section 212 connecting the first section 211 and traversing the PCB 20 to the second side 25 and approaching the second sampling line terminal 22, a third section 213 on the second side 25 connecting the second section 212 and extending back toward the first sampling line terminal 2011, a fourth section 214 connecting the third section 213 and traversing the PCB 20 to the first side 24 and approaching the first sampling line terminal 2011, and a fifth section 215 on the first side 24 connecting the fourth section 214 and extending toward the second sampling line terminal 22, wherein the first section 211 is electrically separated from the fifth section 215. So arranged, the reclamation line 21 is able to meet sampling requirements from the lateral direction; meanwhile, viewed from the longitudinal direction, the circuit can be arranged into a ring circuit, and the circuit has a corresponding reclamation area, and the related circuits in the reclamation area can not touch each other to cause short circuit.
Specifically, the first segment 211 includes a linear first lead-out portion 2111 connected to the first sampling line end 2011, the second segment 212 includes a connecting portion 2121 vertically penetrating through the PCB 20, the third segment 213 includes a linear upper lead-back portion 2131 and an upper surrounding portion 2132 connected to the upper lead-back portion 2131 and annularly surrounding the periphery of the first sampling line end 2011, the fourth segment 214 includes a turning portion 2141 connected to the upper surrounding portion 2132 and vertically penetrating through the PCB 20, the fifth segment 215 includes a first lower surrounding portion 2151 surrounding the periphery of the first sampling line end 2011, two linear second lead-out portions 2152 extending from the first lower surrounding portion 2151 and a second lower surrounding portion 2153 connected to the two second lead-out portions 2152 and surrounding the periphery of the second sampling line end 22, and the second lead-out portions 2152 are distributed on two sides of the first lead-out portion 2111. So set up, the setting of the portion 2132 that surrounds, 2151, 2153 can avoid adjacent circuit to take place the short circuit better, satisfies sampling requirement and reclamation area requirement better simultaneously.
The turnarounds 2141 and the second sampling line end 22 are located on both sides of the first sampling line end 2011. With this arrangement, in this embodiment, in order to prevent the connecting portion 2121 from making short-circuit contact with the second sampling line end 22, the connecting portion 2121 does not completely reach the second sampling line end 22, and the turning portion 2141 is disposed outside the first sampling line end 2011, so that the reclamation line 21 has an area corresponding to an area where the resistor body 12 is longitudinally interfered by an external magnetic field.
The second lower surrounding portion 2153 is provided with a first leading-out end 2154 on the first side surface 24, the second sampling end 16 is provided with a second leading-out end 221 on the second side surface 25, and the first leading-out end 2154 and the second leading-out end 221 are correspondingly arranged on the first side surface 24 and the second side surface 25 of the PCB 20. Thus, the first leading-out end 2154 and the second leading-out end 221 are arranged on the upper portion and the lower portion of the PCB 20 correspondingly, so that sampling data can be more accurate and are not easily subjected to electromagnetic interference.
The upper surrounding portion 2132 and the first lower surrounding portion 2151 are disposed on the first side surface 24 and the second side surface 25 of the PCB 20, respectively. So set up, reclamation line 21 receives external magnetic field area of drying out in all directions can better with resistive element 12 is vertically to be received external magnetic field area of drying out corresponding.
The PCB 20 is packaged with an electrical information module, that is, a package module 26 is formed together, and the electrical information module includes a filter element and an AD chip, and two ground lines 2021 extend from the electrical information module. With such an arrangement, the grounding circuit 2021 can effectively prevent surge voltage from breaking down the module elements.
The diamagnetic field splitter 100 is provided with a current inlet 11 and a current outlet 13, which are respectively provided with a connecting hole 111 and a connecting hole 131, the connecting holes 111 and 131 are respectively used for riveting a terminal 3 and a terminal 4, the terminal 3 and the terminal 4 are respectively provided with a fixing hole 31 and a fixing hole 41 which are used for fixing on a housing (not shown) of an electric power instrument, and the terminal 3 and the terminal 4 are used for electrically fixing a cable.
Referring to fig. 11 to 13, which are schematic structural diagrams of a diamagnetic field splitter 200 according to a second embodiment of the present invention, terminals 2001 integrally extend in a longitudinal direction of the diamagnetic field splitter 200, so that the diamagnetic field splitter is convenient to manufacture and assemble.
Referring to fig. 14 to 16, which are schematic structural diagrams of a diamagnetic field splitter 300 according to a third embodiment of the present invention, extension portions 3001 extend longitudinally and integrally from two sides of the diamagnetic field splitter 300, a connection hole 3002 is disposed on the extension portion 3001, and the connection hole 3002 is used for riveting a terminal button, so that riveting can be achieved perpendicular to the terminal button, and the connection hole 3002 can be removed for welding.
The invention can also comprise a fourth embodiment of the diamagnetic field splitter structure, wherein the connecting hole is used for horizontally riveting the wiring terminal knob, so that different riveting of the wiring terminal knob is facilitated, and the connecting hole can be removed for welding.
The invention also protects an electric power meter (not shown) comprising an electric power meter housing (not shown) and the diamagnetic field splitter 100, 200, 300 located within the electric power meter housing. The main core component of the power instrument is the magnetic field interference resistance of the magnetic field splitters 100, 200 and 300, and the magnetic field interference resistance of the magnetic field splitters 100, 200 and 300 under the condition of small working current and high magnetic field interference can enable the power instrument to have excellent power data detection precision, so that the power instrument has the market competitive advantage of the core.
The invention also discloses a manufacturing method of the anti-magnetic field shunt 100, 200, 300, taking the first embodiment as an example, comprising the steps of manufacturing the shunt 1 and the PCB 20 respectively; manufacturing the PCB board 20, wherein the PCB board 20 comprises a main board end 201 and a communication end 202, and arranging the reclamation line 21 on the main board end 201 of the PCB board 20; the voltage end 14, the first sampling end 15 and the second sampling end 16 of the current divider 1 are respectively and electrically connected with the voltage line end 23, the first sampling line end 2011 and the second sampling line end 22 of the PCB 20; arranging components on the main board end 201 of the PCB 20 to form a PCB module 2, and encapsulating the PCB module 2 to expose the communication end 202. The steps are not limited in the front and the back, so that the components of the PCB module 2 can be better protected under the conditions of high temperature and high humidity, and the shunt 1, the PCB 20 and the mounting method between the shunt 1 and the PCB 20 can enable the anti-magnetic field shunts 100, 200 and 300 to have excellent anti-magnetic field interference under the conditions of small working current and high magnetic field interference, and improve the accuracy of electric data detection of an electric instrument.
The directions of the arrows shown in fig. 6, 11, 12, 13, and 15 are current directions.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
A series of terms of orientation, such as front, rear, left, right, upper, lower, and the like, used for each technical feature of the above-described embodiments are only used for convenience of description and understanding of each technical feature, and do not limit the specific direction in practical use of the technical solution.
All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A diamagnetic field shunt is characterized in that: comprises a shunt and a PCB board, wherein the PCB board is arranged on the shunt in a close proximity way,
the current divider comprises a current inflow end, a resistor body and a current outflow end which are electrically connected in sequence, the current divider is sequentially provided with a voltage end, a first sampling end and a second sampling end along the flowing direction of current, and the first sampling end and the second sampling end are respectively arranged on two sides of the center of the longitudinal effective resistor body along the flowing direction of the current;
be equipped with on the PCB board and be used for electric connection respectively corresponding to voltage line end, first sampling end, the voltage line end of second sampling end, first sampling line end, second sampling line end on the shunt, the PCB board is equipped with the first side of pressing close to the shunt and the second side relative with the first side, it serves the line of enclosing and reclaiming that transversely extends to between the second sampling line end position from first sampling line to be equipped with in the PCB board, enclose and reclaim the line and transversely divide into two piece upper and lower the same areas to effective resistive element perpendicularly, it is corresponding to enclose the area of establishing with effective resistive element and vertically receive external magnetic field to do up the area.
2. The diamagnetic field splitter according to claim 1, wherein: the reclamation line comprises a first section, a second section, a third section, a fourth section and a fifth section, wherein the first section is located on the first side face and used for electrically connecting the first sampling end and extending towards the direction of the second sampling line end, the second section is connected with the first section and transversely penetrates through the second side face of the PCB board, the second section is close to the second sampling line end, the third section is located on the second side face and reversely extends in a revolving mode towards the direction of the first sampling line end, the fourth section is connected with the third section and transversely penetrates through the first side face of the PCB board, the fourth section is close to the first sampling line end, the fifth section is located on the first side face and connected with the fourth section and extends towards the direction of the second sampling line end, and the first section is electrically separated from the fifth section.
3. The diamagnetic field splitter according to claim 1, wherein: the first section is including connecting the first portion of drawing out of the straight line of first sampling line end, the second section is including the vertical connecting portion that passes the PCB board, the third section includes the straight line and connects the last portion of drawing back that goes up that the loop-shaped surrounds in first sampling line end outlying, the fourth section is including connecting the portion of surrounding around and the vertical gyration portion that passes the PCB board, the fifth section is including surrounding in first sampling line end outlying first portion of surrounding down, two straight line shape second portions of drawing out that extend from first portion of surrounding down and connecting two the second is drawn out the portion and is surrounded in second sampling line end outlying second portion of surrounding down, the second draw out the part cloth in first portion both sides of drawing out.
4. A diamagnetic field splitter according to claim 3, wherein: the rotary part and the second sampling line end are positioned on two sides of the first sampling line end.
5. A diamagnetic field splitter according to claim 3, wherein: the second lower surrounding part is provided with a first leading-out end on the first side surface, the second sampling end is provided with a second leading-out end on the second side surface, and the first leading-out end and the second leading-out end are correspondingly arranged on the first side surface and the second side surface of the PCB.
6. A diamagnetic field splitter according to claim 3, wherein: the upper surrounding part and the first lower surrounding part are correspondingly arranged on the first side surface and the second side surface of the PCB.
7. The diamagnetic field splitter according to claim 1, wherein: the utility model provides a shunt, the utility model discloses a shunt, including shunt, PCB board, voltage end, first sampling end and/or second sampling end, the voltage end, first sampling end and/or second sampling end are protruding locates for the side direction the salient point form of shunt, the PCB board is two-sided hole ization board at least, voltage line end, first sampling line end and/or second sampling line end are the metal loop hole form that the via hole set up, voltage end, first sampling end and/or second sampling end wear to locate realize electric connection in voltage line end, first sampling line end and/or the second sampling line end.
8. The anti-magnetic field shunt according to claim 1, wherein: the PCB is packaged with an electrical information module, wherein the electrical information module comprises a filter element and an AD chip, and two grounding lines extend out of the electrical information module.
9. An electric power meter characterized in that: comprising a power meter housing and a diamagnetic field splitter according to any one of claims 1 to 8 located within the power meter housing.
10. A manufacturing method of a diamagnetic field shunt is characterized by comprising the following steps: comprising manufacturing the shunt according to claims 1 to 8 and the PCB board, respectively;
manufacturing the PCB, wherein the PCB comprises a main board part and a communication end, and arranging the reclamation line on the main board part of the PCB;
electrically connecting a voltage end, a first sampling end and a second sampling end on the shunt with a voltage line end, a first sampling line end and a second sampling line end on the PCB respectively;
and arranging components on the main board part of the PCB to form a PCB module, and packaging the PCB module to expose the communication end.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210302751.3A CN114778916A (en) | 2022-03-25 | 2022-03-25 | Anti-magnetic field current divider, electric power meter thereof and manufacturing method of anti-magnetic field current divider |
| PCT/CN2023/071205 WO2023179181A1 (en) | 2022-03-25 | 2023-01-09 | Anti-magnetic field shunt, electric power meter, and manufacturing method for anti-magnetic field shunt |
| KR1020237039006A KR20230171977A (en) | 2022-03-25 | 2023-01-09 | Method for manufacturing coercive field shunt, power meter and coercive field shunt |
| CONC2023/0004699A CO2023004699A2 (en) | 2022-03-25 | 2023-04-17 | Antimagnetic current divider, electric power meter and method of making antimagnetic current divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210302751.3A CN114778916A (en) | 2022-03-25 | 2022-03-25 | Anti-magnetic field current divider, electric power meter thereof and manufacturing method of anti-magnetic field current divider |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114778916A true CN114778916A (en) | 2022-07-22 |
Family
ID=82425364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210302751.3A Pending CN114778916A (en) | 2022-03-25 | 2022-03-25 | Anti-magnetic field current divider, electric power meter thereof and manufacturing method of anti-magnetic field current divider |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR20230171977A (en) |
| CN (1) | CN114778916A (en) |
| CO (1) | CO2023004699A2 (en) |
| WO (1) | WO2023179181A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023179181A1 (en) * | 2022-03-25 | 2023-09-28 | 桐乡市伟达电子有限公司 | Anti-magnetic field shunt, electric power meter, and manufacturing method for anti-magnetic field shunt |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2997653A (en) * | 1958-02-13 | 1961-08-22 | Sangamo Electric Co | Single stator watthour meter for polyphase systems |
| FR2470972A1 (en) * | 1979-11-28 | 1981-06-12 | Enertec | CURRENT-TO-VOLTAGE CONVERTER, PARTICULARLY FOR ELECTRICAL ENERGY MEASUREMENT CIRCUIT |
| CN102323459B (en) * | 2011-08-12 | 2013-10-23 | 桐乡市伟达电子有限公司 | Alternating magnetic field-resistant manganin current divider |
| CN202177647U (en) * | 2011-08-12 | 2012-03-28 | 桐乡市伟达电子有限公司 | Alternating magnetic field resistant manganin diverter |
| FR2979707B1 (en) * | 2011-09-07 | 2014-04-25 | Sagemcom Energy & Telecom Sas | MEASURING DEVICE COMPRISING A SHUNT AND AN ELECTRIC COUNTER COMPRISING SUCH A MEASURING DEVICE |
| CN102854347A (en) * | 2012-08-09 | 2013-01-02 | 俞敏 | Electric energy meter and current sampling device thereof |
| CN203672929U (en) * | 2013-12-16 | 2014-06-25 | 安徽千恩智能科技股份有限公司 | Manganin diverter with alternating magnetic field interference-proof property, relay and electronic electric energy meter |
| CN107271744B (en) * | 2017-07-03 | 2020-03-24 | 杭州海兴电力科技股份有限公司 | Lead structure of manganin shunt, PCB and wiring structure of PCB |
| CN210090554U (en) * | 2018-11-30 | 2020-02-18 | 厦门宏发电力电器有限公司 | Shunt of anti magnetic field interference and relay and electronic type electric energy meter thereof |
| CN211856700U (en) * | 2020-02-28 | 2020-11-03 | 桐乡市伟达电子有限公司 | Shunt lead structure, wiring terminal button box thereof and electric instrument thereof |
| CN111190036A (en) * | 2020-02-28 | 2020-05-22 | 桐乡市伟达电子有限公司 | Shunt lead structure, electric power meter with shunt lead structure and manufacturing method of shunt lead structure |
| CN114778916A (en) * | 2022-03-25 | 2022-07-22 | 桐乡市伟达电子有限公司 | Anti-magnetic field current divider, electric power meter thereof and manufacturing method of anti-magnetic field current divider |
| CN217238183U (en) * | 2022-03-25 | 2022-08-19 | 桐乡市伟达电子有限公司 | Anti-magnetic field current divider and electric power instrument thereof |
-
2022
- 2022-03-25 CN CN202210302751.3A patent/CN114778916A/en active Pending
-
2023
- 2023-01-09 KR KR1020237039006A patent/KR20230171977A/en active Search and Examination
- 2023-01-09 WO PCT/CN2023/071205 patent/WO2023179181A1/en active Application Filing
- 2023-04-17 CO CONC2023/0004699A patent/CO2023004699A2/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023179181A1 (en) * | 2022-03-25 | 2023-09-28 | 桐乡市伟达电子有限公司 | Anti-magnetic field shunt, electric power meter, and manufacturing method for anti-magnetic field shunt |
Also Published As
| Publication number | Publication date |
|---|---|
| CO2023004699A2 (en) | 2023-10-19 |
| WO2023179181A1 (en) | 2023-09-28 |
| KR20230171977A (en) | 2023-12-21 |
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