CN113991881B - UT type magnetic core and guide tracked UT type coupling structure wireless power supply system - Google Patents
UT type magnetic core and guide tracked UT type coupling structure wireless power supply system Download PDFInfo
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- CN113991881B CN113991881B CN202111272531.2A CN202111272531A CN113991881B CN 113991881 B CN113991881 B CN 113991881B CN 202111272531 A CN202111272531 A CN 202111272531A CN 113991881 B CN113991881 B CN 113991881B
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- power supply
- magnetic core
- guide rail
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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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
- H01F27/24—Magnetic cores
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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
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/263—Fastening parts of the core together
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
A UT type magnetic core and guide rail type UT type coupling structure wireless power supply system relates to the coupling mechanism design field of wireless power supply systems with track limitation. Aiming at the problems that in the existing wireless power transmission technology, the E-type and other pickup mechanisms are simple in modeling, low in coupling performance, the coupling magnetic cores of the double-ring-shaped and Y-type pickup mechanisms are easy to saturate, and the S-type and other pickup mechanisms cannot be applied to a power supply system of an monorail crane, the application adopts the following technical scheme: guide tracked UT type coupling structure wireless power supply system includes: the device comprises a transmitting guide rail, a receiving coil and a magnetic core; the transmitting guide rail at least comprises one section, wherein the magnetic core is a UT-type magnetic core applied to a guide rail type wireless power supply system, and comprises two parts, one part is of an E-type structure, the other part is of a flat plate type structure, and the receiving coil is wound on an upright post in the middle of the E-type structure; the magnetic core is coupled with the launching rail. The method is suitable for being applied to the monorail crane system adopting the dynamic wireless power transmission technology.
Description
Technical Field
The coupling mechanism design field of the wireless power supply system with the rail limit is related to, in particular to a wireless power supply system with a UT type magnetic core and guide rail type UT type coupling structure.
Background
The planning construction of the green intelligent mine brings higher requirements to the safety electricity utilization of the underground electric equipment with high gas dust. At present, three energy supply modes of electric equipment under a mine mainly exist, namely, contact power supply of a pantograph overhead line, diesel engine energy supply and storage battery power supply. The monorail crane has been widely used in coal mining transportation systems at home and abroad with the advantages of strong traction capability and high working efficiency. The adoption of a contact power supply mode can generate sparks and even explosion phenomena due to the contact of wires; the energy supply mode of the diesel engine is easy to pollute the environment, the diesel oil is not renewable, and the environment is not protected; the storage battery power supply mode is limited by the capacity of the battery, the battery needs to be returned to the well for charging at random, and remote construction operation cannot be performed. The monorail crane system adopting the dynamic wireless power transmission technology not only avoids the safety problem caused by contact power supply of the pantograph overhead line and the underground environment pollution problem caused by diesel oil energy supply, but also can reduce the capacity requirement of a vehicle-mounted battery, increase the driving mileage and improve the convenience of electric energy supply.
For the monorail crane system adopting the dynamic wireless power transmission technology, the system belongs to a guide rail type wireless power transmission system due to the limitation of a track. The coupling mechanism is used as a bridge for realizing wireless power transmission, is the most important ring in system design, and comprises an energy emitting mechanism and an energy picking mechanism. The emission mechanism in the guide rail type wireless power transmission technology is mostly of a long guide rail type, and the structure of the pickup mechanism is varied. Early studies have involved E-type, U-type, S-type, and other pickup mechanisms. Hereinafter, a double annular pickup mechanism and a Y-type pickup mechanism have been proposed in the literature. The E-type, U-type, S-type and other pick-up mechanisms are simple in shape, convenient to manufacture, low in coupling performance, high in coupling performance of the double-ring and Y-type pick-up mechanisms, and easy to saturate the magnetic core when high power is transmitted.
For the launching rail of a power supply system of a downhole monorail hoist, it is necessary to suspend it in the air, and therefore the magnetic core shape of the pick-up means is also required, i.e. the coupling means is to pass smoothly at the transition point of the launching rail. Based on this limitation, the S-type, double loop and Y-type pick-up mechanisms cannot be applied in the power supply system of the monorail crane.
Disclosure of Invention
The double-ring-shaped and Y-shaped pick-up mechanism is simple in shape, convenient to manufacture, low in coupling performance, high in coupling performance, easy to saturate in magnetic core during high-power transmission, and incapable of being applied to a power supply system of an monorail crane.
The application comprises two subjects, respectively: the utility model provides a UT type magnetic core, guide tracked UT type coupling structure wireless power supply system, the concrete scheme is:
the utility model provides a UT type magnetic core, its characterized in that, the magnetic core constitute by two parts, one part is E type structure, and another part is dull and stereotyped type structure, dull and stereotyped type structure fixed and cover be in the top of the riser in the centre of E type structure, and be parallel with the bottom surface of E type structure, the width of the recess of E type structure is L, the distance between the side of dull and stereotyped type structure and the inside wall of E type structure recess is greater than 0.3L.
Further, the flat plate structure specifically comprises: rectangle.
Further, the thickness of the flat plate type structure is the same as the thickness of the bottom surface of the E type structure.
Guide tracked UT type coupling structure wireless power supply system includes: a guide rail; characterized in that the system comprises: the device comprises a transmitting guide rail, a receiving coil, a magnetic core and a power supply device; the said launching track at least one section, each section includes: the device comprises two sections of linear wires and two sections of connecting wires for connecting the two sections of linear wires end to form a closed loop, wherein the two sections of linear wires are parallel to each other, and the connecting wires are connected with a power supply device; the at least one section of emission guide rail is arranged in a straight shape; the power supply device is used for supplying power to the transmitting guide rail; the magnetic core is the UT-type magnetic core, and the receiving coil is wound on the upright post in the middle of the E-type structure; the two linear wires of the transmitting guide rail respectively penetrate through the two grooves of the magnetic core.
Further, the connecting wire is of an arch structure.
Further, the connecting wires are of a fold line structure, and the included angle of the fold line structure is smaller than 120 degrees.
Further, the included angle of the folded line type is 45 degrees.
Further, the included angle of the folded line type is 60 degrees.
Further, the length of each section of the transmitting guide rail is 1.25m.
Further, the length of each section of the transmitting guide rail is 1m.
The application has the advantages that: the first subject matter of the application is advantageous in that:
the technical prejudice of the prior art is overcome, in the existing dynamic wireless power transmission technology of the monorail crane, because the transmitting guide rail is designed on the premise of saving electric energy, a person skilled in the art usually adopts the transmitting guide rail with a sectional design, and a top-closed magnetic core cannot freely move in a corresponding guide rail, so that the person skilled in the art only adopts the purpose of transmitting more electric energy to the crane by increasing the volume of the magnetic core under the condition that the shape of the existing magnetic core is unchanged, and does not consider to adopt the new characteristic on the basis of the original structure to achieve the purpose of transmitting more electric energy to the crane; according to the UT-type magnetic core provided by the application, the flat plate structure which does not seal the opening of the E-type structure is added on the top of the original E-type magnetic core, so that the mutual inductance is increased, and meanwhile, the magnetic core is not prevented from freely moving in the corresponding guide rail. The magnetic core structure is not particularly different from the existing magnetic core structure, but the structural change is not a conventional design means in the field, and the structural change solves the technical problem that the existing magnetic core structure cannot solve and obtains unexpected technical results, specifically:
compared with the existing E-shaped magnetic core, the UT-shaped magnetic core is prolonged in the driving direction at the top end of the upright post in the middle, so that the magnetic core captures more magnetic fields in the driving direction; meanwhile, the UT type magnetic core is prolonged in the direction which is horizontal and vertical to the driving direction, and the magnetic resistance of the main magnetic circuit part of the coupling mechanism is reduced.
2. The flat-plate type magnetic core is arranged on the basis of the original E-type magnetic core, so that the UT-type magnetic core is simple to manufacture.
3. The UT-type core is used to transmit the same power, with a higher power density than other existing cores of the same volume.
4. The UT-type magnetic core is used when the same power is transmitted, and on the premise of ensuring the same power density, compared with other existing magnetic cores, the UT-type magnetic core has smaller volume and lower cost, and meanwhile, the UT-type magnetic core is smaller in volume and lighter in weight, so that the UT-type magnetic core is more suitable for being applied to light-weight scenes such as suspended wireless power supply systems.
The second subject matter of the application is advantageous in that:
compared with the practical application environment of an underground monorail crane, the weight of the UT-type magnetic core is lighter under the premise of 1 and the same power density; 2. the UT type structure is easy to pass through the transition node of the emission guide rail, and compared with a traditional E type coupling mechanism, the UT type magnetic core with the same volume has better coupling performance and higher power density.
The UT-type magnetic core is suitable for being applied to the environment requiring light weight.
The guide rail type UT type coupling structure wireless power supply system is suitable for being applied to a monorail crane system adopting a dynamic wireless power transmission technology.
Drawings
Fig. 1 is a schematic main body diagram of a UT-type magnetic core applied to a rail-type wireless power supply system according to the first embodiment;
fig. 2 is a schematic main body diagram of a wireless power supply system with a rail type UT-type coupling structure according to the fourth embodiment;
fig. 3 is a front view of a wireless power supply system with a rail-type UT-type coupling structure according to the fourth embodiment;
fig. 4 is a side view of a wireless power supply system with a rail-type UT-type coupling structure according to the fourth embodiment;
fig. 5 is a top view of a wireless power supply system with a rail-type UT-type coupling structure according to the fourth embodiment;
fig. 6 is a front view of the UT-type coupling core and its dimension marks mentioned in the first embodiment;
in the figures, the units are mm;
FIG. 7 is a side view of a UT-type coupling core as mentioned in the first embodiment and dimensional indicia thereof;
in the figures, the units are mm;
FIG. 8 is a top view of a UT-type coupling core as mentioned in the first embodiment and dimensional indicia thereof;
in the figures, the units are mm;
wherein, 1 is the transmission guide rail, 2 is the magnetic core, 21 is the flat structure, 22 is the lateral wall of E type structure recess, 23 is the recess of E type structure, 24 is the bottom surface of E type structure, 25 is the riser in the middle of E type structure, 3 is receiving coil.
Detailed Description
The application is further explained below with reference to the drawings.
In a first embodiment, referring to fig. 1 and fig. 6-8, the present embodiment provides a UT-shaped magnetic core, where the magnetic core is composed of two parts, one part is an E-shaped structure, the other part is a plate-shaped structure 21, the plate-shaped structure 21 is fixed on and covers the top end of a vertical plate 25 in the middle of the E-shaped structure and is parallel to the bottom surface 24 of the E-shaped structure, the width of a groove 23 of the E-shaped structure is L, and the distance between the side edge of the plate-shaped structure 21 and the inner side wall 22 of the groove of the E-shaped structure is greater than 0.25L.
Wherein L is 70mm;
the size of the magnetic core can be optimally designed according to magnetic field finite element simulation software;
specifically, because the UT-type magnetic core provided by the application is provided with a flat plate structure based on the original E-type magnetic core, the UT-type magnetic core can be structurally regarded as a combination of U-type and T-type, and therefore the UT-type magnetic core is named;
referring to fig. 6-8, the E-shaped portion of the core structure is 300mm long, 250mm wide, 70mm high, 70mm wide, 50mm high, 30mm thick side walls, 50mm wide middle risers, 450mm long flat plate portions, 100mm wide, and 10mm thick.
In the second embodiment, the present embodiment is further limited to the UT-type magnetic core provided in the first embodiment, and the flat plate-type structure 21 is as follows: rectangle.
In the third embodiment, the present embodiment is further limited to the UT-type magnetic core provided in the first embodiment, and the thickness of the flat plate-type structure 21 is the same as the thickness of the bottom surface 24 of the E-type structure.
A fourth embodiment, which is described with reference to fig. 2 to 5, provides a wireless power supply system with a rail type UT-type coupling structure, including: a guide rail; the system comprises: the device comprises a transmitting guide rail 1, a receiving coil 3, a magnetic core 2 and a power supply device; at least one section of the launching guide rail 1, each section comprises: the device comprises two sections of linear wires and two sections of connecting wires for connecting the two sections of linear wires end to form a closed loop, wherein the two sections of linear wires are parallel to each other, and the connecting wires are connected with a power supply device; the at least one section of the transmitting guide rail 1 is arranged in a straight shape; the power supply device is used for supplying power to the launching guide rail 1; the magnetic core 2 is a UT-shaped magnetic core provided in the first embodiment, and the receiving coil 3 is wound on a column in the middle of the E-shaped structure; the two linear wires of the transmitting guide rail 1 respectively pass through the two grooves of the magnetic core 2.
The energy transmitting guide rail 1 and the energy receiving coil 3 are wound by litz wires, so that the proximity effect between the coils and the skin effect of the coils are reduced, and the magnetic core 2 is made of ferrite made of PC95 material.
The beneficial point of this embodiment is: the launching guide 1 takes a hanging form, and the coupling mechanism can smoothly pass through the nodes of each section of launching guide 1.
In a fifth embodiment, referring to fig. 2 to 5, the present embodiment is further defined on the wireless power supply system with a guide rail type UT-type coupling structure provided in the fourth embodiment, where the connection wire has an arch structure.
In a sixth embodiment, referring to fig. 2 to 5, the present embodiment is further defined by the wireless power supply system with a guide rail type UT-type coupling structure provided in the fourth embodiment, where the connection wire is in a broken line structure, and an included angle of the broken line is smaller than 120 °.
In a seventh embodiment, referring to fig. 2 to 5, the present embodiment is further limited to the wireless power supply system with a guide rail type UT-type coupling structure provided in the sixth embodiment, where the angle between the two fold lines is 45 °.
An eighth embodiment is further defined by the wireless power supply system with a guide rail type UT-shaped coupling structure according to the sixth embodiment, and the included angle between the two linear wires is 60 °.
A ninth embodiment and fig. 2-5 are referred to illustrate the present embodiment, which is a further limitation of the wireless power supply system with a rail type UT-type coupling structure provided in the fourth embodiment, where the length of each section of the transmitting rail 1 is 1.25m.
In a tenth embodiment, referring to fig. 2 to 5, the present embodiment is further limited to the wireless power supply system with a rail type UT-type coupling structure provided in the fourth embodiment, and the length of each section of the transmitting rail 1 is 1m.
An eleventh embodiment, this embodiment provides a specific example for the wireless power supply system with a guide rail UT-type coupling structure, which is an explanation of the progress of the effect of the present application, specifically:
when the transmitting rail 1 has 2 turns and the receiving coil 3 has 6 turns, the comparison of the E-type coupling mechanism and the UT-type coupling mechanism is shown in table 1.
Table 1 comparison of coupling mechanism performance
And carrying out normalization processing on the partial parameters of the two types of coupling mechanisms by taking the corresponding parameters of the E-type coupling mechanism as reference variables, and carrying out comprehensive cost comparison of the two types of coupling mechanisms, wherein the comprehensive cost comparison is shown in a table 2.
Table 2 comparison of the combined costs of the two types of coupling mechanisms
As can be seen from table 2, the ratio of increase of the mutual inductance and the coupling coefficient of the UT type coupling mechanism is larger than that of the magnetic core 2, the ratio of increase of the mutual inductance of the UT type coupling mechanism is 1.74, but the mass ratio is only 1.14, which means that the ratio of increase of the mutual inductance of the UT type coupling mechanism can be approximately 1.52 under the same volume. Because the output power and the mutual inductance are in a forward relation, the UT-type coupling mechanism is used for transmitting the same power, so that the overall design of the system is lighter and has the characteristic of higher power density; in summary, the overall performance of the UT type is greater than that of the E type coupling mechanism.
The foregoing description of the preferred embodiments of the application is not intended to limit the application to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the application.
Claims (10)
1. The utility model provides a UT type magnetic core, its characterized in that, the magnetic core constitute by two parts, one part is E type structure, and another part is dull and stereotyped type structure (21), dull and stereotyped type structure (21) fixed and cover be in the top of riser (25) in the centre of E type structure, and be parallel with bottom surface (24) of E type structure, the width of recess (23) of E type structure is L, the distance between the lateral margin of dull and stereotyped type structure (21) and lateral wall (22) of E type structure recess is greater than 0.3L.
2. A UT-type core according to claim 1, characterized in that the flat-plate structure (21) is: rectangle.
3. A UT-type core according to claim 1, characterized in that the thickness of the planar structure (21) is the same as the thickness of the bottom surface (24) of the E-type structure.
4. Guide tracked UT type coupling structure wireless power supply system includes: a guide rail; characterized in that the system comprises: the device comprises a transmitting guide rail (1), a receiving coil (3), a magnetic core (2) and a power supply device; at least one section of the transmitting guide rail (1), each section comprises: the device comprises two sections of linear wires and two sections of connecting wires for connecting the two sections of linear wires end to form a closed loop, wherein the two sections of linear wires are parallel to each other, and the connecting wires are connected with a power supply device; the at least one section of the transmitting guide rail (1) is arranged in a straight shape; the power supply device is used for supplying power to the launching guide rail (1); the magnetic core (2) is a UT-type magnetic core as set forth in claim 1, and the receiving coil (3) is wound on a stand column in the middle of the E-type structure; the two linear wires of the transmitting guide rail (1) respectively penetrate through the two grooves of the magnetic core (2).
5. The wireless power supply system of a rail-type UT coupling structure according to claim 4, wherein the connecting wire has an arch structure.
6. The wireless power supply system of a guide rail type UT type coupling structure according to claim 4, wherein the connecting wire is of a fold line type structure, and the included angle of the fold line type is smaller than 120 °.
7. The wireless power supply system of a rail-type UT-type coupling structure according to claim 6, wherein the angle of the meander line is 45 °.
8. The wireless power supply system of a rail-type UT coupling structure according to claim 6, wherein the angle between the two linear wires is 60 °.
9. The wireless power supply system of the guide rail type UT type coupling structure according to claim 4, wherein the length of each section of the transmitting guide rail (1) is 1.25m.
10. The wireless power supply system of the guide rail type UT type coupling structure according to claim 4, wherein the length of each section of the transmitting guide rail (1) is 1m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111272531.2A CN113991881B (en) | 2021-10-29 | 2021-10-29 | UT type magnetic core and guide tracked UT type coupling structure wireless power supply system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111272531.2A CN113991881B (en) | 2021-10-29 | 2021-10-29 | UT type magnetic core and guide tracked UT type coupling structure wireless power supply system |
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| CN113991881A CN113991881A (en) | 2022-01-28 |
| CN113991881B true CN113991881B (en) | 2023-10-13 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186711A (en) * | 2015-09-06 | 2015-12-23 | 哈尔滨工业大学 | Bridge arm winding type flat plate magnetic core receiving end applied to wireless power supply of electric cars |
| CN106887902A (en) * | 2017-03-21 | 2017-06-23 | 重庆大学 | The electromagnetic coupling mechanisms of electric motor car wireless power |
| CN110544988A (en) * | 2019-09-18 | 2019-12-06 | 青岛中科瑞信电力技术有限公司 | Magnetic coupling mechanism based on track wireless power supply system |
| CN110867938A (en) * | 2019-11-19 | 2020-03-06 | 中铁电气化局集团有限公司 | Magnetic coupling mechanism for wireless power supply of rail transit |
| CN112636484A (en) * | 2020-12-09 | 2021-04-09 | 北京临近空间飞行器系统工程研究所 | Guide rail type wireless energy supply system applied to aerospace craft |
-
2021
- 2021-10-29 CN CN202111272531.2A patent/CN113991881B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186711A (en) * | 2015-09-06 | 2015-12-23 | 哈尔滨工业大学 | Bridge arm winding type flat plate magnetic core receiving end applied to wireless power supply of electric cars |
| CN106887902A (en) * | 2017-03-21 | 2017-06-23 | 重庆大学 | The electromagnetic coupling mechanisms of electric motor car wireless power |
| CN110544988A (en) * | 2019-09-18 | 2019-12-06 | 青岛中科瑞信电力技术有限公司 | Magnetic coupling mechanism based on track wireless power supply system |
| CN110867938A (en) * | 2019-11-19 | 2020-03-06 | 中铁电气化局集团有限公司 | Magnetic coupling mechanism for wireless power supply of rail transit |
| CN112636484A (en) * | 2020-12-09 | 2021-04-09 | 北京临近空间飞行器系统工程研究所 | Guide rail type wireless energy supply system applied to aerospace craft |
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