CN114496510A - Anti direct current component mutual-inductor subassembly reaches instrument including it - Google Patents
Anti direct current component mutual-inductor subassembly reaches instrument including it Download PDFInfo
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- CN114496510A CN114496510A CN202210169968.1A CN202210169968A CN114496510A CN 114496510 A CN114496510 A CN 114496510A CN 202210169968 A CN202210169968 A CN 202210169968A CN 114496510 A CN114496510 A CN 114496510A
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- copper sheet
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
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- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The invention discloses an anti-direct current component mutual inductor component, which comprises: the ABC three-phase copper sheet is unfolded into a strip-shaped copper sheet with a left convex part in the middle, the A-phase copper sheet is formed by upward folding, flat folding, downward folding, flat folding, upward folding and flat folding, the B-phase copper sheet is formed by downward folding, flat folding, upward folding, flat folding, downward folding and flat folding, the C-phase copper sheet is formed by upward folding, flat folding, downward folding, flat folding, upward folding and flat folding, the N-phase copper sheet is formed by upward folding, flat folding, downward folding and flat folding a straight strip-shaped copper sheet, and voltage signal connectors are arranged on the ABC three-phase copper sheet and the N-phase copper sheet; the three direct-current component resisting transformers are respectively installed in the downward folding section of the A-phase copper sheet, the upward folding section of the B-phase copper sheet and the downward folding section of the C-phase copper sheet, the N-phase copper sheet is installed on the left side of the A-phase copper sheet and spans over the left half portion of the A-phase direct-current component resisting transformer, and wiring terminals are respectively installed on the wire inlet end and the wire outlet end of the ABC three-phase copper sheet and the N-phase copper sheet.
Description
Technical Field
The invention relates to the technical field of direct-current component resisting transformers, in particular to a direct-current component resisting transformer assembly and an instrument comprising the direct-current component resisting transformer assembly.
Background
The requirement of the existing new standard on the electric energy metering precision and the anti-interference capability is higher and higher, the common mutual inductor for the original measurement needs to be replaced by an anti-direct-current component mutual inductor with higher precision and stronger anti-interference capability, the anti-direct-current component mutual inductor is much larger than the common mutual inductor, the size of an upgraded and updated instrument is increased, the required installation space is increased, the upgraded instrument cannot be installed in the installation space of the existing instrument, the market competitiveness is weakened, and the hardware design difficulty is increased due to the space problem.
Disclosure of Invention
The invention provides an anti-direct-current component transformer assembly and an instrument comprising the same, aiming at the problems and the defects in the prior art.
The invention solves the technical problems through the following technical scheme:
the invention provides a direct current component resisting mutual inductor component which is characterized by comprising an A-phase copper sheet, a B-phase copper sheet, a C-phase copper sheet, an N-phase copper sheet, a first direct current component resisting mutual inductor, a second direct current component resisting mutual inductor and a third direct current component resisting mutual inductor;
the A-phase copper sheet is unfolded to be a strip-shaped copper sheet with a left convex part in the middle part, the A-phase copper sheet is formed by upward folding, flat folding, downward folding, flat folding, upward folding and flat folding, the length of a second flat folding section of the A-phase copper sheet is larger than that of a first flat folding section, and a first voltage signal connector is arranged on the A-phase copper sheet;
the B-phase copper sheet is unfolded into a strip-shaped copper sheet with a left convex part in the middle part, the B-phase copper sheet is formed by downwards folding, flatly folding, upwards folding, flatly folding, downwards folding and flatly folding, the length of a first flatly folded section of the B-phase copper sheet is larger than that of a second flatly folded section, and a second voltage signal connector is arranged on the B-phase copper sheet;
the C-phase copper sheet is unfolded into a strip-shaped copper sheet with a left convex part in the middle part, the C-phase copper sheet is formed by upward folding, horizontal folding, downward folding, horizontal folding, upward folding and horizontal folding, the length of a second horizontal folding section of the C-phase copper sheet is larger than that of a first horizontal folding section, and a third voltage signal joint is arranged on the C-phase copper sheet;
the N-phase copper sheet is formed by bending a straight strip copper sheet through upward folding, flat folding, downward folding and flat folding, and a fourth voltage signal connector is arranged on the N-phase copper sheet;
the A-phase copper sheet, the B-phase copper sheet and the C-phase copper sheet are arranged from left to right, mutual inductor accommodating spaces are formed around a lower folded section of the A-phase copper sheet, an upper folded section of the B-phase copper sheet and a lower folded section of the C-phase copper sheet, the first direct-current component resisting mutual inductor, the second direct-current component resisting mutual inductor and the third direct-current component resisting mutual inductor are respectively installed in the lower folded section of the A-phase copper sheet, the upper folded section of the B-phase copper sheet and the lower folded section of the C-phase copper sheet, the N-phase copper sheet is arranged on the left side of the A-phase copper sheet and spans over the left half part of the A-phase DC-resistant transformer, an insulating sleeve is arranged on a section of the N-phase copper sheet above the A-phase anti-direct current transformer, wiring terminals are respectively arranged on the wire inlet end and the wire outlet end of the A-phase copper sheet, the B-phase copper sheet, the C-phase copper sheet and the N-phase copper sheet, the first anti-direct-current component mutual inductor, the second anti-direct-current component mutual inductor and the third anti-direct-current component mutual inductor are arranged in a flat-lying delta shape after being installed.
Preferably, the overall dimensions of the A-phase copper sheet, the B-phase copper sheet and the C-phase copper sheet after being unfolded are completely the same.
Preferably, after the first direct-current component resisting transformer, the second direct-current component resisting transformer and the third direct-current component resisting transformer are installed, the first direct-current component resisting transformer, the second direct-current component resisting transformer and the third direct-current component resisting transformer are deviated to the left relative to the wire inlet end and the wire outlet end of the copper sheet, so that the right side of the third direct-current component resisting transformer is aligned with the right sides of the wire inlet end wiring terminal and the wire outlet end wiring terminal of the C-phase copper sheet, and the left side of the first direct-current component resisting transformer is aligned with the left sides of the wire inlet end wiring terminal and the wire outlet end wiring terminal of the N-phase copper sheet.
Preferably, the length of the first upward-folded section and the length of the second upward-folded section of the a-phase copper sheet are half of the length of the downward-folded section, the length of the first downward-folded section and the length of the second downward-folded section of the B-phase copper sheet are half of the length of the upward-folded section, and the length of the first upward-folded section and the length of the second upward-folded section of the C-phase copper sheet are half of the length of the downward-folded section, so that the wire inlet ends and the wire outlet ends of the a-phase copper sheet, the B-phase copper sheet and the C-phase copper sheet are on the same central plane.
The invention also provides an instrument which is characterized by comprising the anti-direct-current component transformer assembly, a measuring board and a display board, wherein the measuring board, the display board and the anti-direct-current component transformer assembly form an instrument hardware structure, and the measuring board collects and measures voltage and current signals of the anti-direct-current component transformer assembly and displays the voltage and current signals on the display board in a digital form.
Preferably, the measuring plate is a weak current part, the anti-direct current component transformer assembly is a strong current part, and the measuring plate and the anti-direct current component transformer assembly are designed with a safety distance d to meet the isolation requirement of strong current and weak current.
Preferably, the direct current component resisting transformer assembly is installed in the lower shell, the measuring plate and the display plate are sequentially placed at the top of the direct current component resisting transformer assembly, the upper shell is installed to complete assembly, and the display screen of the display plate is embedded in the upper surface of the upper shell.
On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.
The positive progress effects of the invention are as follows:
according to the direct current component resisting mutual inductor assembly, the copper sheet is ingeniously utilized to form a staggered space, a large-size direct current component resisting mutual inductor can be installed, the space utilization rate is high, the mutual inductor is installed in a lying mode, the size of the assembly in the length direction, the width direction and the height direction can be made small, and equipment using the direct current component resisting mutual inductor assembly is smaller than that of a similar product under the same function and has market competitiveness; the equipment using the anti-direct current component mutual inductor component can separate a strong current part from a weak current part, solves the problem of isolation of strong and weak current circuits, reduces the design difficulty and the material cost, and has clear structure hierarchy, simple structure, safety and reliability; the shape and size of the copper sheets of the ABC phase are completely the same after being unfolded, a blanking die can be shared, and the die sinking cost is saved; the incoming line end and the outgoing line end of the anti-direct-current component mutual inductor assembly are in an up-down and left-right symmetrical form, so that the anti-direct-current component mutual inductor assembly can be installed in a horizontally-overturning mode, a vertically-overturning mode and a vertically-overturning mode after being horizontally-overturned, has high installation freedom degree and meets different design requirements.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIGS. 2(a) - (b) are schematic diagrams of phase A copper sheets;
FIGS. 3(a) - (B) are schematic diagrams of a B-phase copper sheet;
FIGS. 4(a) - (b) are schematic diagrams of C-phase copper sheets;
FIG. 5 is a schematic view of an N-phase copper sheet;
FIG. 6 is an expanded comparison schematic diagram of an ABC phase copper sheet;
FIGS. 7(a) - (d) are schematic diagrams of the assembly of the anti-DC component transformer assembly;
FIGS. 8(a) - (b) are schematic diagrams of the space layout and dimensions of the anti-DC component transformer;
FIG. 9 is a schematic diagram of the relative positions of the instrument circuit board and the anti-DC component transformer assembly;
FIG. 10 is a schematic diagram of the distance between the instrument weak current circuit board and the anti-DC component transformer assembly;
FIGS. 11(a) - (c) are examples of equipment assembly using such an anti-DC component transformer assembly;
FIG. 12 is a schematic view showing the same central plane of the inlet terminal and the outlet terminal of the ABC phase copper sheet;
fig. 13(a) - (d) are schematic diagrams of various mounting ways of the anti-dc component transformer assembly in the meter.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, the present invention provides a dc component resistant transformer assembly, which includes an a-phase copper sheet 1, a B-phase copper sheet 2, a C-phase copper sheet 3, an N-phase copper sheet 4, a dc component resistant transformer 501, a dc component resistant transformer 502, and a dc component resistant transformer 503.
As shown in fig. 2(a), the a-phase copper sheet 1 is unfolded into a strip-shaped copper sheet with a left convex 1h in the middle, as shown in fig. 2(b), the a-phase copper sheet 1 is formed by bending the a-phase copper sheet 1 through upward folding 1a, horizontal folding 1b, downward folding 1c, horizontal folding 1d, upward folding 1e and horizontal folding 1f, the length of the flat folding 1d section of the a-phase copper sheet 1 is greater than that of the flat folding 1b section, and the a-phase copper sheet 1 is provided with a voltage signal connector 1 g.
As shown in fig. 3(a), the B-phase copper sheet 2 is unfolded into a strip-shaped copper sheet with a left protrusion 2h in the middle, as shown in fig. 3(B), the B-phase copper sheet 2 is formed by bending the B-phase copper sheet 2 through downward folding 2a, flat folding 2B, upward folding 2c, flat folding 2d, downward folding 2e and flat folding 2f, the length of the flat folding 2B of the B-phase copper sheet is greater than that of the flat folding 2d, and a voltage signal connector 2g is arranged on the B-phase copper sheet 2.
As shown in fig. 4(a), the C-phase copper sheet 3 is unfolded into a strip-shaped copper sheet with a left protrusion 3h in the middle, as shown in fig. 4(b), the C-phase copper sheet 3 is formed by bending the C-phase copper sheet 3 through upward folding 3 a-flat folding 3 b-downward folding 3C-flat folding 3 d-upward folding 3 e-flat folding 3f, the length of the flat folding 3d section of the C-phase copper sheet 3 is greater than that of the flat folding 3b section, and a voltage signal connector 3g is arranged on the C-phase copper sheet 3.
In combination with 2(a) - (b), it can be seen that the phase a copper sheets are identical to the phase C copper sheets.
As shown in FIG. 5, the N-phase copper sheet 4 is formed by bending a straight copper sheet through an upward folding 4a, a horizontal folding 4b, a downward folding 4c and a horizontal folding 4d, and the N-phase copper sheet 4 is provided with a voltage signal connector 4 e.
As shown in fig. 6, the appearance sizes of the a-phase copper sheet 1, the B-phase copper sheet 2 and the C-phase copper sheet 3 after being unfolded are completely the same, and the blanking die can be shared, so that the die sinking cost is saved.
As shown in fig. 7(a), when ABC three-phase copper sheets are arranged from left to right, a transformer accommodating space is formed around a downward-folded 1C section of an a-phase copper sheet, an upward-folded 2C section of a B-phase copper sheet, and a downward-folded 3C section of a C-phase copper sheet, as shown in fig. 7(B), 3 dc component resisting transformers 501, 502, 503 are respectively installed in the downward-folded 1C section of the a-phase copper sheet, the upward-folded 2C section of the B-phase copper sheet, and the downward-folded 3C section of the C-phase copper sheet, as shown in fig. 7(C), an N-phase copper sheet 4 is installed on the left side of the a-phase copper sheet 1, straddles over the left half portion of the a-phase dc resisting transformer 501, as shown in fig. 7(d), an insulating sleeve 401 is installed over a section of the a-phase dc resisting transformer 501 by the N-phase copper sheet 4, and connection terminals 601 and 608 are respectively installed at the wire inlet end and the wire outlet end of the a-phase copper sheet 1, the B-phase copper sheet 2, the C-phase copper sheet 3, and the N-phase copper sheet 4.
As shown in fig. 8(a) - (B), 3 dc component resisting transformers 501, 502, 503 are respectively installed in the downward-folded 1C section of the a-phase copper sheet, the upward-folded 2C section of the B-phase copper sheet, and the downward-folded 3C section of the C-phase copper sheet, because the length of the flat-folded 1d section of the a-phase copper sheet 1 is greater than that of the flat-folded 1B section, the length of the flat-folded 2B section of the B-phase copper sheet is greater than that of the flat-folded 2d section, and the length of the flat-folded 3d section of the C-phase copper sheet 3 is greater than that of the flat-folded 3B section, the dc component resisting transformers 501, 502, 503 are arranged in a flat-lying shape; because the A-phase copper sheet 1, the B-phase copper sheet 2 and the C-phase copper sheet 3 are formed by bending and bending left-convex strip-shaped copper sheets, the downward-folded 1C section of the A-phase copper sheet, the upward-folded 2C section of the B-phase copper sheet and the downward-folded 3C section of the C-phase copper sheet are all left-convex sections, the direct-current component resisting transformers 501, 502 and 503 are left relative to the wire inlet end and the wire outlet end of the copper sheet after being installed, so that the right sides of the direct-current component resisting transformers 503 are aligned with the right sides of the wire inlet terminal connecting terminal 604 and the wire outlet terminal connecting terminal 608 of the C-phase copper sheet, the left sides of the direct-current component resisting transformers 501 are aligned with the left sides of the wire inlet terminal 601 and the wire outlet terminal 605 of the N-phase copper sheet, the space is fully utilized, the length and width dimensions a and B can meet the requirements, and the height dimension C can also meet the design requirements due to the fact that the copper sheets are installed in a laid flat manner, the height dimension is much smaller than the vertical installation.
Referring to fig. 9, the meter may be designed such that the measurement board 7 and the display board 8 and the dc component resistant transformer assembly 101 constitute a hardware structure of the meter, and the measurement board 7 collects and measures the voltage and current signals of the dc component resistant transformer assembly 101 and displays them on the display board 8 in digital form.
As shown in fig. 10, the measurement plate 7 is a weak current portion, the anti-dc component transformer assembly 101 is a strong current portion, and the measurement plate 7 and the anti-dc component transformer assembly 101 are designed to have a safe distance d to meet the isolation requirement of the weak current and the strong current.
As shown in fig. 11(a) - (c), in an apparatus assembly case using such an anti-dc component transformer assembly, the anti-dc component transformer assembly 101 is installed into the lower case 10, the measuring board 7 and the display board 8 are sequentially placed on top of the anti-dc component transformer assembly 101, the upper case 9 is installed to complete the assembly, and the display screen of the display board 8 is embedded on the upper surface of the upper case 9.
As shown in fig. 12, the lengths of the upward-folded 1a section and the upward-folded 1e section of the a-phase copper sheet are half of the length of the downward-folded 1C section, the lengths of the downward-folded 2a section and the downward-folded 2e section of the B-phase copper sheet are half of the length of the upward-folded 2C section, and the lengths of the upward-folded 3a section and the upward-folded 3e section of the C-phase copper sheet are half of the length of the downward-folded 3C section, so that the wire inlet ends and the wire outlet ends of the a-phase copper sheet 1, the B-phase copper sheet 2 and the C-phase copper sheet 3 are on the same central plane.
Fig. 13(a) - (d) are schematic diagrams illustrating various installation modes of the anti-dc component transformer assembly in the instrument, and fig. 13(a) - (d) are respectively normal installation, horizontal overturning installation, vertical overturning installation, and vertical overturning installation after horizontal overturning.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (7)
1. A direct current component resisting mutual inductor component is characterized by comprising an A-phase copper sheet, a B-phase copper sheet, a C-phase copper sheet, an N-phase copper sheet, a first direct current component resisting mutual inductor, a second direct current component resisting mutual inductor and a third direct current component resisting mutual inductor;
the A-phase copper sheet is unfolded into a strip-shaped copper sheet with a left convex part in the middle part, the A-phase copper sheet is formed by upward folding, flat folding, downward folding, flat folding, upward folding and flat folding, the length of a second flat folding section of the A-phase copper sheet is larger than that of a first flat folding section, and a first voltage signal connector is arranged on the A-phase copper sheet;
the B-phase copper sheet is unfolded into a strip-shaped copper sheet with a left convex part in the middle part, the B-phase copper sheet is formed by downwards folding, flatly folding, upwards folding, flatly folding, downwards folding and flatly folding, the length of a first flatly folded section of the B-phase copper sheet is larger than that of a second flatly folded section, and a second voltage signal connector is arranged on the B-phase copper sheet;
the C-phase copper sheet is unfolded into a strip-shaped copper sheet with a left convex part in the middle part, the C-phase copper sheet is formed by upward folding, horizontal folding, downward folding, horizontal folding, upward folding and horizontal folding, the length of a second horizontal folding section of the C-phase copper sheet is larger than that of a first horizontal folding section, and a third voltage signal joint is arranged on the C-phase copper sheet;
the N-phase copper sheet is formed by bending a straight strip copper sheet through upward folding, flat folding, downward folding and flat folding, and a fourth voltage signal connector is arranged on the N-phase copper sheet;
the A-phase copper sheet, the B-phase copper sheet and the C-phase copper sheet are arranged from left to right, mutual inductor accommodating spaces are formed around a lower folded section of the A-phase copper sheet, an upper folded section of the B-phase copper sheet and a lower folded section of the C-phase copper sheet, the first direct-current component resisting mutual inductor, the second direct-current component resisting mutual inductor and the third direct-current component resisting mutual inductor are respectively installed in the lower folded section of the A-phase copper sheet, the upper folded section of the B-phase copper sheet and the lower folded section of the C-phase copper sheet, the N-phase copper sheet is arranged on the left side of the A-phase copper sheet and spans over the left half part of the A-phase DC-resistant transformer, an insulating sleeve is arranged on a section of the N-phase copper sheet above the A-phase anti-direct current transformer, wiring terminals are respectively arranged on the wire inlet end and the wire outlet end of the A-phase copper sheet, the B-phase copper sheet, the C-phase copper sheet and the N-phase copper sheet, the first anti-direct-current component mutual inductor, the second anti-direct-current component mutual inductor and the third anti-direct-current component mutual inductor are arranged in a flat-lying delta shape after being installed.
2. The dc component resistant transformer assembly of claim 1, wherein the a-phase, B-phase, and C-phase copper sheets have substantially the same overall dimensions after being unrolled.
3. The dc component resistant transformer assembly of claim 1, wherein the first, second and third dc component resistant transformers are mounted with respect to the incoming and outgoing terminals of the copper sheet such that the right side of the third dc component resistant transformer is aligned with the right sides of the incoming and outgoing terminals of the C-phase copper sheet and the left side of the first dc component resistant transformer is aligned with the left sides of the incoming and outgoing terminals of the N-phase copper sheet.
4. The dc component resistant transformer assembly of claim 1, wherein the first folded-up section and the second folded-up section of the a-phase copper sheet have a length that is half of a length of the folded-down section, the first folded-down section and the second folded-down section of the B-phase copper sheet have a length that is half of a length of the folded-up section, and the first folded-up section and the second folded-up section of the C-phase copper sheet have a length that is half of a length of the folded-down section, such that the incoming ends and the outgoing ends of the a-phase copper sheet, the B-phase copper sheet, and the C-phase copper sheet are on the same center plane.
5. An instrument comprising the dc component resistant transformer assembly according to any one of claims 1 to 4, further comprising a measurement board and a display board, the measurement board and the display board forming an instrument hardware structure together with the dc component resistant transformer assembly, the measurement board collecting and measuring voltage and current signals of the dc component resistant transformer assembly, and displaying the voltage and current signals on the display board in digital form.
6. The meter of claim 1, wherein the measurement board is a weak current portion, the dc component resistant transformer assembly is a strong current portion, and the measurement board and the dc component resistant transformer assembly are designed with a safe spacing d to meet the isolation requirements of strong and weak currents.
7. The instrument of claim 1, wherein the dc component resistance transformer assembly is installed in a lower case, a measuring board and a display board are sequentially placed on the top of the dc component resistance transformer assembly, and then an upper case is installed to complete the assembly, and a display screen of the display board is embedded in the upper surface of the upper case.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210169968.1A CN114496510B (en) | 2022-02-24 | 2022-02-24 | Anti direct current component transformer subassembly and instrument including it |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210169968.1A CN114496510B (en) | 2022-02-24 | 2022-02-24 | Anti direct current component transformer subassembly and instrument including it |
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| CN114496510A true CN114496510A (en) | 2022-05-13 |
| CN114496510B CN114496510B (en) | 2023-10-03 |
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| CN206460865U (en) * | 2017-02-27 | 2017-09-01 | 天水长开互感器制造有限公司 | A kind of Integral three-phase current transformer |
| CN209418291U (en) * | 2018-11-23 | 2019-09-20 | 江苏斯菲尔电气股份有限公司 | A kind of modularization current-carrying mutual inductor |
| CN113707497A (en) * | 2021-08-25 | 2021-11-26 | 江苏斯菲尔电气股份有限公司 | Anti-direct-current component mutual inductor, magnetic latching relay assembly and electric energy metering equipment |
| WO2022025522A1 (en) * | 2020-07-31 | 2022-02-03 | 삼성전자 주식회사 | Antennas and electronic device comprising same |
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2022
- 2022-02-24 CN CN202210169968.1A patent/CN114496510B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013168568A (en) * | 2012-02-16 | 2013-08-29 | Denso Corp | Manufacturing method of rectangular coil and coil device |
| CN203103240U (en) * | 2013-01-25 | 2013-07-31 | 杭州乾龙电器有限公司 | Low caloric power electric leakage circuit breaker rear conductor assembly |
| CN206460865U (en) * | 2017-02-27 | 2017-09-01 | 天水长开互感器制造有限公司 | A kind of Integral three-phase current transformer |
| CN209418291U (en) * | 2018-11-23 | 2019-09-20 | 江苏斯菲尔电气股份有限公司 | A kind of modularization current-carrying mutual inductor |
| WO2022025522A1 (en) * | 2020-07-31 | 2022-02-03 | 삼성전자 주식회사 | Antennas and electronic device comprising same |
| CN113707497A (en) * | 2021-08-25 | 2021-11-26 | 江苏斯菲尔电气股份有限公司 | Anti-direct-current component mutual inductor, magnetic latching relay assembly and electric energy metering equipment |
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| CN114496510B (en) | 2023-10-03 |
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