CN114429847A - Magnetic field generating coil and winding method thereof - Google Patents
Magnetic field generating coil and winding method thereof Download PDFInfo
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- CN114429847A CN114429847A CN202210339341.6A CN202210339341A CN114429847A CN 114429847 A CN114429847 A CN 114429847A CN 202210339341 A CN202210339341 A CN 202210339341A CN 114429847 A CN114429847 A CN 114429847A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/06—Coil winding
- H01F41/071—Winding coils of special form
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
- H01F41/127—Encapsulating or impregnating
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/04—Arrangements of electric connections to coils, e.g. leads
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Abstract
The invention discloses a magnetic field generating coil, which comprises: the coil comprises a first coil, a second coil and a middle conducting wire; the first coil, the second coil and the middle lead are formed by winding cables; the cable comprises a first middle cable and a second middle cable arranged at the middle conducting wire, a first annular cable part arranged in the first coil and a second annular cable part arranged in the second coil; first middle part cable and the crisscross overlapping setting each other of second middle part cable, and first middle part cable is located the top of middle part wire, and second middle part cable is located the bottom of middle part wire. A winding method of the magnetic field generating coil is also provided. The structure of adopting this design can reduce the axial dimension of coil, piles up middle part wire position each other moreover and can form a moderate middle part wire region of size, and the width in this region can not change along with the design number of turns change of coil, and axial thickness can keep the same with the coil of both sides to the whole volume of control coil.
Description
Technical Field
The invention belongs to the technical field of electromagnetic coils, and particularly relates to a magnetic field generating coil and a winding method of the coil.
Background
The 8-shaped coil is a special coil structure, a magnetic field peak is formed between two annular coils by the coil, the magnetic field at the position has higher strength and longer acting distance, and therefore the 8-shaped coil is widely applied to medical treatment and industry, but the middle part of the 8-shaped coil needs to contain cables with the turns as many as possible because the main acting position is in the middle parts of the two coils, the stacking of the coils can cause the integral size of the middle part to be larger, the cables stacked in the middle part can also cause a gap to be generated between two adjacent cables in the coils at two sides, the generation of the gap can reduce the integral magnetic field strength of the coil, and larger current loss can also be generated; there are also a few designs using an eddy-shaped coil instead of the figure-8 coil, but the eddy-shaped coil causes the radial dimension between the two coils to be larger, and the larger the radial dimension, the larger the acting area of the middle magnetic field, and the lower the strength of the magnetic field. And the eddy-shaped coil has a certain difference with the 8-shaped coil in the shape of the magnetic field range, and cannot completely replace the 8-shaped coil.
Disclosure of Invention
The invention provides a magnetic field generating coil and a winding method of the coil.
A magnetic field generating coil comprising: the coil comprises a first coil, a second coil and a middle conducting wire; the middle lead is arranged between the first coil and the second coil; the first coil, the second coil and the middle wire are wound by cables; the cable comprises a first middle cable part and a second middle cable part which are arranged at the middle conducting wire, a first annular cable part arranged in the first coil and a second annular cable part arranged in the second coil; the first middle cables and the second middle cables are arranged in a staggered and overlapped mode, the first middle cables are located at the uppermost end of the middle conducting wire, and the second middle cables are located at the lowermost end of the middle conducting wire;
furthermore, a first middle cable, a first annular cable part, a second middle cable and a second annular cable part in the cable are sequentially connected with one another;
furthermore, one end of a first middle cable positioned at the uppermost end of the middle lead is provided with a wiring end, the other end of the first middle cable is connected with the first annular cable part, one end of a second middle cable positioned at the lowermost end of the middle lead is provided with a wiring end, and the other end of the second middle cable is connected with the second annular cable part; the two ends of the first middle cable and the second middle cable which are arranged in the middle are respectively connected with the first annular cable part and the second annular cable part;
further, the first coil comprises a plurality of stacked first annular cable parts; the second coil comprises a plurality of stacked second annular cable parts;
further, the cross section of the cable is rectangular, and the rectangular aspect ratio of the cross section of the cable is smaller than 1: 1;
furthermore, the thicknesses of the first middle cable and the second middle cable are the same, and the thicknesses of the first annular cable part and the second annular cable part are 1/2; the cross section areas of the first middle cable and the second middle cable are the same as the cross section areas of the first annular cable part and the second annular cable part;
furthermore, the upper surface of the first middle cable is flush with the upper surfaces of the first annular cable part and the second annular cable part, the lower surface of the first middle cable has a height difference with the lower surfaces of the first annular cable part and the second annular cable part, and the height difference is 1/2 of the thickness of the first annular cable part and the second annular cable part;
furthermore, the lower surface of the second middle cable is flush with the lower surfaces of the first annular cable part and the second annular cable part, the upper surface of the second middle cable part has a height difference with the upper surfaces of the first annular cable part and the second annular cable part, and the height difference is 1/2 of the thickness of the first annular cable part and the second annular cable part;
furthermore, the lower surface of the first middle cable and the upper surface of the second middle cable are buckled and abutted with each other, and the combined thickness of the first middle cable and the second middle cable is the same as that of the first annular cable part;
furthermore, the upper surfaces and the lower surfaces of the first coil, the second coil, the first middle cable, the second middle cable, the first annular cable part and the second annular cable part which are adjacent in the middle lead are arranged in a mutually abutting contact manner;
furthermore, the shape of the second annular cable part is the same as that of the first annular cable part and is symmetrically arranged;
a winding method of a magnetic field generating coil comprises the following steps:
s01: according to the design parameters of the coil, the length dimensions of a first middle cable part, a first annular cable part, a second middle cable part and a second annular cable part of the cable are designed;
s02: extruding the first middle cable part and the second middle cable part in the cable;
s03: painting the cable;
s04: winding a coil and fixing the coil;
further, in the step S01, the length of the first middle cable and the second middle cable is equal to the length of the middle wire position; the length of the first annular cable part and the second annular cable part is the difference value of the circumferential lengths of the first coil and the second coil minus the length of the middle lead;
further, the step S02 includes:
s021: placing a first middle cable of the cable in a first middle cable stamping die, wherein the first middle cable stamping die fixes the first middle cable and enables the upper side surface of the first middle cable to be attached to the upper side surface of the first middle cable stamping die;
s022: moving a first middle cable stamping head positioned at the lower part of the first middle cable stamping die to extrude the first middle cable into 1/2 thickness of the cable;
s023: placing a second middle cable of the cable in a second middle cable stamping die, fixing the second middle cable by the second middle cable stamping die, and enabling the lower side surface of the second middle cable to be attached to the lower side surface of the second middle cable stamping die;
s024: moving a second middle cable stamping head positioned at the lower part of the second middle cable stamping die to extrude the second middle cable into 1/2 thickness of the cable;
further, the step S04 includes:
s041, horizontally placing the cable, enabling the extruded side of the second middle cable to be upward and the side of the second middle cable to be flush with the surfaces of the second annular cable part and the first annular cable part and be downward;
s042: fixing a second middle cable, and bending and winding a second annular cable part of the cable to one side of the second middle cable to form a second coil;
s043: placing the first middle cable right above the second middle cable so that the upper plane of the second middle cable is attached to the upper surface of the second coil;
s044: fixing a first middle cable, and bending and winding a first annular cable part of the cable to the other side of a second middle cable to form a first coil;
s045: placing a second middle cable right above the first middle cable so that the lower surface of the second middle cable is attached to the upper surface of the first middle cable;
s046: and repeating the steps S042, S043, S044 and S045 until the coil reaches the specified number of turns.
In the coils wound by the cables with the same number of turns, the coil winding device has the smallest volume, particularly, in the middle wire positions of the middle parts of the two coils, under the condition that the number of turns is the same, more cables can be superposed in the middle parts by the traditional vortex wire winding method, the width of the wire position in the whole middle part can be increased according to the number of turns and the parameter increase of the size of the cable, a larger magnetic field area can be formed at the same time, the magnetic field area is too large to be beneficial to focusing, and the increase of the number of turns of the coils can also cause the radial size of the whole coil to be enlarged, so that the area of the magnetic field is further increased; compared with the traditional cross winding mode, the traditional cross winding mode can form a gap between adjacent wires on the coils at two sides, the axial distance (coil axial direction) in the middle part is larger, and further the axial size of the whole coil is increased. The structure of adopting this design can reduce the axial dimension of coil, piles up middle part wire position each other moreover and can form a moderate middle part wire region of size, and the width in this region can not change along with the design number of turns change of coil, and axial thickness can keep the same with the coil of both sides to the whole volume of control coil.
Drawings
FIG. 1 is a front view of a single coil state of a magnetic field generating coil of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1 of a magnetic field generating coil of the present invention;
FIG. 3 is a cross-sectional view B-B of FIG. 1 of a magnetic field generating coil of the present invention;
FIG. 4 is a perspective view of a single coil state of a magnetic field generating coil of the present invention;
FIG. 5 is a front view of a multi-coil state of a magnetic field generating coil of the present invention;
FIG. 6 is a cross-sectional view C-C of FIG. 5 of a magnetic field generating coil of the present invention;
FIG. 7 is a cross-sectional view D-D of FIG. 5 of a magnetic field generating coil of the present invention;
FIG. 8 is a perspective view of a multi-coil configuration of a magnetic field generating coil of the present invention;
FIG. 9 is a perspective view of a multi-coil configuration of a magnetic field generating coil of the present invention;
FIG. 10 is a schematic front view of a magnetic field generating coil of the present invention after the cable is unwound;
FIG. 11 is a schematic top view of a magnetic field generating coil of the present invention after the cable is deployed;
fig. 12 is a schematic mechanism diagram of a cable stamping die according to a winding method of a magnetic field generating coil of the present invention.
Detailed Description
Example 1:
referring to fig. 1-4, a magnetic field generating coil includes a first coil 1, a second coil 2, and a middle wire 3;
the middle lead 3 is arranged between the first coil 1 and the second coil 2;
the first coil 1, the second coil 2 and the middle lead 3 are wound by a cable 4;
the cable 4 includes a first central cable 41 and a second central cable 43 provided at the central conductor 3, a first annular cable portion 42 provided in the first coil 1, a second annular cable portion 44 provided in the second coil 2;
the first middle cables 41 and the second middle cables 43 are arranged in a staggered and overlapped mode, the first middle cables 41 are located at the uppermost ends of the middle conducting wires 3, and the second middle cables 43 are located at the lowermost ends of the middle conducting wires 3;
one end of the first middle cable 41 positioned at the uppermost end of the middle wire 3 is provided with a terminal 411, and the other end is connected to the first annular cable part 42, and one end of the second middle cable 43 positioned at the lowermost end of the middle wire 3 is provided with a terminal 411, and the other end is connected to the second annular cable part 44; both ends of the first and second middle cables 41 and 43 provided at the middle are respectively connected with the first and second annular cable parts 42 and 44;
the first middle cable 41, the first annular cable part 42, the second middle cable 43 and the second annular cable part 44 in the cable 4 are arranged in sequence and connected end to end;
the first coil 1 comprises a plurality of stacked first annular cable parts 42;
the second coil 2 comprises a plurality of stacked second annular cable parts 44;
the axes of the first middle cable 41 and the second middle cable 43 are straight, one end of the first middle cable 41 arranged at the uppermost part is provided with a terminal 411, and the other end of the first middle cable 41 is bent to one side to form a first annular cable part 42 of the first coil 1;
the first annular cable part 42 is in a circular arc shape or other shapes;
one end of the first annular cable part 42 is connected with the second middle cable 43 at the position below the first middle cable 41, and one end of the first middle cable 41 and the second middle cable 43 are integrally arranged;
the second middle cable 43 is positioned at the lower part of the first middle cable 41 and is arranged in parallel with the first middle cable 41;
the other end of the first middle cable 41 is bent to the opposite side of the first annular cable part 42 to form a second annular cable part 44 of the second coil 2;
the second annular cable part 44 has the same shape as the first annular cable part 42 and is symmetrically arranged;
one end of the second annular cable part 44 is connected with another first middle cable 41 at a position below the second middle cable 43, and one end of the first middle cable 41 is integrally arranged with the first middle cable 41;
after the first coil 1 and the second coil 2 are finally connected with one end of a second middle cable 43 arranged at the bottommost part, the other end of the second middle cable 43 is provided with a terminal 411;
the cross section of the cable 4 can be rectangular, and when the cross section of the cable is rectangular, the aspect ratio is less than 1: 1 and the longer sides of the cross section of the cable 4 are arranged parallel to each other.
When in use, current is introduced into the terminals of the first middle cable 41 and the second middle cable 43, and the whole coil generates a magnetic field.
The double-coil is the coil of 8 font coiling, can form the better magnetic field of focusing effect in middle part wire 3 department, can reach higher magnetic field intensity moreover, and the magnetic field that the double-coil produced can form the peak value of a magnetic field intensity in the parallel direction of middle part wire 3, can form the peak value of a stronger magnetic field intensity and two slightly littleer magnetic field intensity peak values in the 3 directions of perpendicular to middle part wire.
Example 2:
referring to fig. 1-11, a magnetic field generating coil includes a first coil 1, a second coil 2, and a middle wire 3;
the middle lead 3 is arranged between the first coil 1 and the second coil 2;
the first coil 1, the second coil 2 and the middle lead 3 are wound by a cable 4;
the cable 4 includes a first central cable 41 and a second central cable 43 provided at the central conductor 3, a first annular cable portion 42 provided in the first coil 1, a second annular cable portion 44 provided in the second coil 2;
the first middle cables 41 and the second middle cables 43 are arranged in a staggered and overlapped mode, the first middle cables 41 are located at the uppermost ends of the middle conducting wires 3, and the second middle cables 43 are located at the lowermost ends of the middle conducting wires 3;
one end of the first middle cable 41 positioned at the uppermost end of the middle wire 3 is provided with a terminal 411, and the other end is connected to the first annular cable part 42, and one end of the second middle cable 43 positioned at the lowermost end of the middle wire 3 is provided with a terminal 411, and the other end is connected to the second annular cable part 44; both ends of the first and second middle cables 41 and 43 provided at the middle are respectively connected with the first and second annular cable parts 42 and 44;
the first middle cable 41, the first annular cable part 42, the second middle cable 43 and the second annular cable part 44 in the cable 4 are arranged in sequence and connected end to end;
the first coil 1 comprises a plurality of stacked first annular cable parts 42;
the second coil 2 comprises a plurality of stacked second annular cable parts 44;
the cross section of the cable 4 is rectangular, and the rectangular aspect ratio of the cross section of the cable is less than 1: 1;
the thickness of the first middle cable 41 and the second middle cable 43 is 1/2 of the first annular cable part 42 and the second annular cable part 44, and the cross-sectional area of the first middle cable 41 and the second middle cable 43 is the same as that of the first annular cable part 42 and the second annular cable part 44;
the upper surface of the first middle cable 41 is flush with the upper surfaces of the first annular cable part 42 and the second annular cable part 44, the lower surface of the first middle cable part is level with the lower surfaces of the first annular cable part 42 and the second annular cable part 44, the height difference exists between the lower surfaces of the first middle cable part and the second middle cable part, and the overall thickness of the first middle cable part and the second middle cable part is 1/2 of the first annular cable part 42 and the second annular cable part 44;
the lower surface of the second middle cable 43 is flush with the upper surfaces of the first annular cable part 42 and the second annular cable part 44, the upper surfaces have a height difference with the lower surfaces of the first annular cable part 42 and the second annular cable part 44, and the overall thickness is 1/2 of the first annular cable part 42 and the second annular cable part 44;
when the coil is wound, the lower surface of the first middle cable 41 and the upper surface of the second middle cable 43 are buckled and abutted with each other, and the whole thickness is the same as that of the first annular cable part 42 and the second annular cable part 44;
the upper and lower surfaces of the adjacent first middle cable 41, second middle cable 43, first annular cable part 42 and second annular cable part 44 in the first coil 1, the second coil 2 and the middle lead 3 are all arranged in a mutual abutting contact manner;
the axes of the first middle cable 41 and the second middle cable 43 are straight, one end of the first middle cable 41 arranged at the uppermost part is provided with a terminal 411, and the other end of the first middle cable 41 is bent to one side to form a first annular cable part 42 of the first coil 1;
the first annular cable part 42 is in a circular arc shape or other shapes;
one end of the first annular cable part 42 is connected with the second middle cable 43 at the position below the first middle cable 41, and one end of the first middle cable 41 and the second middle cable 43 are integrally arranged;
the second middle cable 43 is positioned at the lower part of the first middle cable 41 and is arranged in parallel with the first middle cable 41;
the other end of the first middle cable 41 is bent to the opposite side of the first annular cable part 42 to form a second annular cable part 44 of the second coil 2;
the second annular cable part 44 has the same shape as the first annular cable part 42 and is symmetrically arranged;
one end of the second annular cable part 44 is connected with another first middle cable 41 at a position below the second middle cable 43, and one end of the first middle cable 41 is integrally arranged with the first middle cable 41;
after the first coil 1 and the second coil 2 are finally connected with one end of a second middle cable 43 arranged at the bottommost part, the other end of the second middle cable 43 is provided with a terminal 411;
when in use, current is introduced into the terminals of the first middle cable 41 and the second middle cable 43, and the whole coil generates a magnetic field.
The double coils wound in the shape of the figure 8 can form a magnetic field with a good focusing effect at the middle part of the lead 3, and can reach a high magnetic field intensity, the magnetic field generated by the double coils forms a peak value of the magnetic field intensity in the direction parallel to the middle part of the lead 3, and a peak value of the magnetic field intensity which is stronger and two slightly smaller peak values of the magnetic field intensity in the direction perpendicular to the middle part of the lead 3 can be formed.
The design is in coils wound by cables with the same number of turns, the size is the smallest, particularly, the middle wire 3 position in the middle of two coils is provided, under the condition that the number of turns is the same, more cables can be superposed in the middle of the coils by a traditional vortex-line-shaped winding method, the width of the whole middle wire position can be increased according to the number of turns and the parameter increase of the size of the cables, a larger magnetic field area can be formed at the same time, the magnetic field area is too large to be beneficial to focusing, and the increase of the number of turns of the coils can also lead the radial size of the whole coil to be enlarged, so that the area of the magnetic field is further increased; compared with the traditional cross winding mode, the traditional cross winding mode can form a gap between adjacent wires on the coils at two sides, the axial distance (coil axial direction) in the middle part is larger, and further the axial size of the whole coil is increased. The structure of adopting this design can reduce the axial dimension of coil, piles up middle part wire 3 position each other moreover and can form the 3 regions of middle part wire that a size is moderate, and the width in this region can not change along with the design turn change of coil, and axial thickness can keep the same with the coil of both sides to the whole volume of control coil.
Meanwhile, the cross-sectional area of the middle wire 3 cable in the design is the same as that of other positions, and the whole magnetic field intensity and temperature change of the coil cannot be influenced. The requirement that a high-current coil needs to be used is met.
Example 3:
referring to fig. 1-12, a method for winding a magnetic field generating coil includes the following steps:
s01: designing the length dimensions of the first central cable 41, the first annular cable part 42, the second central cable 43 and the second annular cable part 44 of the cable 4 according to the design parameters of the coil;
s02: extruding the first and second middle cables 41 and 43 in the cable 4;
s03: the cable 4 is subjected to a painting treatment;
s04: winding a coil and fixing the coil;
in the step S01, the length of the first central cable 41 and the second central cable 43 is equal to the length of the central conductor 3;
the length of the first annular cable part 42 and the second annular cable part 44 is the difference value of the circumferential length of the first coil 1 and the second coil 2 minus the length of the middle lead 3;
the step S02 includes:
s021: placing the first middle cable 41 of the cable 4 in a first middle cable stamping die 51, wherein the first middle cable stamping die 51 fixes the first middle cable 41 and enables the upper side surface of the first middle cable 41 to be attached to the upper side surface of the first middle cable stamping die 51;
s022: moving the first central cable stamping head 52 located at the lower portion of the first central cable stamping die 51 to extrude the first central cable 41 to have a thickness of 1/2 of the cable 4;
s023: placing the second middle cable 43 of the cable 4 in a second middle cable stamping die 53, wherein the second middle cable stamping die 53 fixes the second middle cable 43 and enables the lower side surface of the second middle cable 43 to be abutted against the lower side surface of the second middle cable stamping die 53;
s024: moving the second intermediate cable stamping head 54 located at the lower portion of the second intermediate cable stamping die 53 to extrude the second intermediate cable 43 to have a thickness of 1/2 of the cable 4;
when the cable 4 is horizontally placed, and one side of the long side of the rectangular section of the cable 4 is positioned above and below; the first middle cable stamping die 51 and the second middle cable stamping head 54 are positioned above the cable 4; the first middle cable stamping head 52 and the second middle cable stamping die 53 are positioned below the cable 4.
In the step S03, the cable is painted, in order to uniformly coat the surface of the cable with the insulating paint;
the step of S04 includes:
s041: the cable 4 is placed horizontally so that the pressed side of the second intermediate cable 43 is upward, and the side flush with the surfaces of the second annular cable part 44, the first annular cable part 42 is downward:
s042: fixing the second middle cable 43, bending and winding the second annular cable part 44 of the cable 4 to one side of the second middle cable 43 to form a second coil 2;
s043: placing the first middle cable 41 right above the second middle cable 43 to make the upper plane of the second middle cable 43 and the upper surface of the second coil 2 mutually attached;
s044: fixing the first intermediate cable 41, and bending and winding the first annular cable part 42 of the cable 4 to the other side of the second intermediate cable 43 to form a first coil 1;
s045: placing the second middle cable 43 right above the first middle cable 41 so that the lower surface of the second middle cable 43 and the upper surface of the first middle cable 41 are attached to each other;
s046: and repeating the steps S042, S043, S044 and S045 until the coil reaches the specified number of turns.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (15)
1. A magnetic field generating coil, characterized by: it includes: a first coil (1), a second coil (2) and a middle lead (3); the middle lead (3) is arranged between the first coil (1) and the second coil (2); the first coil (1), the second coil (2) and the middle lead (3) are formed by winding cables (4); the cable (4) comprises a first middle cable (41) and a second middle cable (43) which are arranged at the middle lead (3), a first annular cable part (42) which is arranged in the first coil (1), and a second annular cable part (44) which is arranged in the second coil (2); first middle part cable (41) and second middle part cable (43) crisscross overlapping setting each other, and first middle part cable (41) are located the top of middle part wire (3), second middle part cable (43) are located the bottom of middle part wire (3).
2. A magnetic field generating coil as defined in claim 1, wherein: the cable (4) is characterized in that a first middle cable (41), a first annular cable part (42), a second middle cable (43) and a second annular cable part (44) are sequentially connected with one another.
3. A magnetic field generating coil as claimed in claim 2, wherein: one end of a first middle cable (41) positioned at the uppermost end of the middle lead (3) is provided with a terminal (411), the other end is connected with the first annular cable part (42), one end of a second middle cable (43) positioned at the lowermost end of the middle lead (3) is provided with the terminal (411), and the other end is connected with the second annular cable part (44); both ends of the first central cable (41) and the second central cable (43) disposed at the intermediate positions are connected to the first annular cable portion (42) and the second annular cable portion (44), respectively.
4. A magnetic field generating coil as claimed in claim 3, wherein: the first coil (1) comprises a plurality of stacked first annular cable parts (42); the second coil (2) comprises a plurality of stacked second annular cable parts (44).
5. A magnetic field generating coil as claimed in claim 4, wherein: the cross section of the cable (4) is rectangular, and the rectangular aspect ratio of the cross section of the cable is less than 1: 1.
6. a magnetic field generating coil as claimed in claim 1 or 5, wherein: the thicknesses of the first middle cable (41) and the second middle cable (43) are the same, and the thicknesses of the first annular cable part (42) and the second annular cable part (44) are 1/2; and the cross-sectional areas of the first middle cable (41) and the second middle cable (43) are the same as the cross-sectional areas of the first annular cable part (42) and the second annular cable part (44).
7. A magnetic field generating coil as claimed in claim 6, wherein: the upper surface of the first middle cable (41) is flush with the upper surfaces of the first annular cable part (42) and the second annular cable part (44), the lower surface of the first middle cable (41) has a height difference with the lower surfaces of the first annular cable part (42) and the second annular cable part (44), and the height difference is 1/2 of the thickness of the first annular cable part (42) and the second annular cable part (44).
8. A magnetic field generating coil as claimed in claim 7, wherein: the lower surface of the second middle cable (43) is flush with the lower surfaces of the first annular cable part (42) and the second annular cable part (44), the upper surface of the second middle cable part has a height difference with the upper surfaces of the first annular cable part (42) and the second annular cable part (44), and the height difference is 1/2 of the thickness of the first annular cable part (42) and the second annular cable part (44).
9. A magnetic field generating coil as defined in claim 8, wherein: the lower surface of the first middle cable (41) and the upper surface of the second middle cable (43) are buckled and abutted with each other, and the combined thickness of the first middle cable (41) and the second middle cable (43) is the same as that of the first annular cable part (42).
10. A magnetic field generating coil as claimed in claim 9, wherein: the upper and lower surfaces of the first coil (1), the second coil (2) and the first middle cable (41), the second middle cable (43), the first annular cable part (42) and the second annular cable part (44) which are adjacent to each other in the middle lead (3) are arranged in a manner of abutting against each other.
11. A magnetic field generating coil as defined in claim 10, wherein: the shape of the second annular cable part (44) is the same as that of the first annular cable part (42) and the second annular cable part and the first annular cable part are symmetrically arranged.
12. A winding method of a magnetic field generating coil comprises the following steps:
s01: according to the design parameters of the coil, the length dimensions of a first middle cable (41), a first annular cable part (42), a second middle cable (43) and a second annular cable part (44) of the cable (4) are designed;
s02: extruding the first middle cable (41) and the second middle cable (43) in the cable (4);
s03: painting the cable (4);
s04: and winding the coil and fixing the coil.
13. A method of winding a magnetic field generating coil as claimed in claim 12, wherein: in the step S01, the length of the first middle cable (41) and the second middle cable (43) is equal to the length of the middle conductor (3); the length of the first annular cable part (42) and the second annular cable part (44) is the difference value obtained by subtracting the length of the middle lead (3) from the circumferential length of the first coil (1) and the second coil (2).
14. A method of winding a magnetic field generating coil as claimed in claim 13, wherein: the step S02 includes:
s021: placing a first middle cable (41) of the cable (4) in a first middle cable stamping die (51), wherein the first middle cable stamping die (51) fixes the first middle cable (41) and enables the upper side surface of the first middle cable (41) to be attached to the upper side surface of the first middle cable stamping die (51);
s022: moving a first middle cable stamping head (52) positioned at the lower part of the first middle cable stamping die (51) to extrude the first middle cable (41) to have the thickness of 1/2 of the cable (4);
s023: placing a second middle cable (43) of the cable (4) in a second middle cable stamping die (53), wherein the second middle cable stamping die (53) fixes the second middle cable (43) and enables the lower side surface of the second middle cable (43) to be attached to the lower side surface of the second middle cable stamping die (53);
s024: a second center cable punch 54 located at the lower portion of the second center cable punch mold 53 is moved to extrude the second center cable 43 to have a thickness of 1/2 of the cable 4.
15. A method of winding a magnetic field generating coil as claimed in claim 14, wherein: the step S04 includes:
s041: horizontally placing the cable (4) so that the extruded side of the second middle cable (43) faces upwards and the side flush with the surfaces of the second annular cable part (44) and the first annular cable part (42) faces downwards;
s042: fixing a second middle cable (43), and bending and winding a second annular cable part (44) of the cable (4) to one side of the second middle cable (43) to form a second coil (2);
s043: placing the first middle cable (41) right above the second middle cable (43) so that the upper plane of the second middle cable (43) is attached to the upper surface of the second coil (2);
s044: fixing a first middle cable (41), and bending and winding a first annular cable part (42) of the cable (4) to the other side of a second middle cable (43) to form a first coil (1);
s045: placing a second middle cable (43) right above the first middle cable (41) so that the lower surface of the second middle cable (43) and the upper surface of the first middle cable (41) are attached to each other;
s046: and repeating the steps S042, S043, S044 and S045 until the coil reaches the specified number of turns.
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| CN114429847B (en) | 2022-05-31 |
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