CN115664059A - Anti-deviation wireless charging coupling mechanism and design and manufacturing method thereof - Google Patents
Anti-deviation wireless charging coupling mechanism and design and manufacturing method thereof Download PDFInfo
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Abstract
The invention relates to an anti-deviation wireless charging coupling mechanism and a design and manufacturing method thereof, wherein the anti-deviation wireless charging coupling mechanism comprises: the charging and transmitting platform is used for transmitting energy to the receiving coil and comprises a main transmitting coil and an auxiliary transmitting coil which is in a concentric circle structure with the main transmitting coil; and the receiving coil is arranged above the charging and transmitting platform and used for receiving the energy transmitted by the charging and transmitting platform and transmitting the energy to the actuating mechanism, the receiving coil comprises a first receiving coil arranged at a first mutual inductance position and a second receiving coil arranged at a second mutual inductance position, the first mutual inductance position is a position where the equivalent coupling coefficient of the first receiving coil and the main transmitting coil meets a preset standard, and the second mutual inductance position is an outer edge position of the auxiliary transmitting coil.
Description
Technical Field
The invention relates to the field of wireless charging, in particular to an anti-deviation wireless charging coupling mechanism and a design and manufacturing method thereof.
Background
With the rapid development of wireless charging technology, many electronic devices become more intelligent and unmanned by means of wireless power transmission technology. The unmanned aerial vehicle is one of the equipment representatives which need the wireless power transmission technology to realize unmanned and autonomous charging, and the requirement of the wireless charging system is high.
In the existing inventions, in order to realize the compactness of the wireless charging receiving end of the unmanned aerial vehicle, too much efficiency cannot be sacrificed, and ferrite or flexible magnetic materials are applied to reduce magnetic leakage loss. This makes the wireless charging system lightweight degree of unmanned aerial vehicle high inadequately, and anti skew performance is not good enough. However, in order to pursue the light weight of the wireless charging receiving end of the drone, the wireless charging transmission power and transmission efficiency are sacrificed. In order to pursue the inaccurate phenomenon of unmanned aerial vehicle landing position, the wireless charging of unmanned aerial vehicle still should have anti skew performance, and present solution is to use array transmission end. In order to solve that unmanned aerial vehicle landing position takes place to rotate and confront the skew effect and have certain influence, most of schemes are that the receiving terminal adopts plane disk coil structure and array transmission end combination, and such receiving terminal form is unfavorable for arranging the aerodynamic drag increase that can cause external coil to lead to on the contrary on unmanned aerial vehicle.
Disclosure of Invention
Therefore, the invention provides an anti-deviation wireless charging coupling mechanism and a design and manufacturing method thereof, which can ensure the transmission power and the transmission efficiency of wireless charging while realizing the light weight of a wireless charging receiving end.
In order to achieve the above object, the present invention provides an anti-deviation wireless charging coupling mechanism and a design and manufacturing method thereof, wherein the anti-deviation wireless charging coupling mechanism comprises: the charging and transmitting platform is used for transmitting energy to the receiving coil and comprises a main transmitting coil and an auxiliary transmitting coil which is concentric with the main transmitting coil and the inner part of the main transmitting coil; receiving coil sets up in horizontal intraduct of unmanned aerial vehicle undercarriage bottom, works as when receiving coil charges, unmanned aerial vehicle descends the transmitting platform top of charging, be used for receiving the energy of transmitting platform transmission charges, and will energy transmission gives actuating mechanism, receiving coil including set up in the first receiving coil of first mutual inductance position with set up in the second receiving coil of the mutual inductance position of second, wherein, first mutual inductance position is the mutual biggest position of first receiving coil and main transmitting coil, the mutual inductance position of second does the position is followed outward to vice transmitting coil, the mutual inductance position of second accords with the standard with the mutual inductance sum in charging transmitting platform and receiving coil magnetic field of first mutual inductance position.
Furthermore, the auxiliary transmitting coil is arranged at the central position in the main transmitting coil, the outer diameter of the auxiliary transmitting coil is smaller than the inner diameter of the main transmitting coil, and the auxiliary transmitting coil is connected with the main transmitting coil in series and the current directions are consistent.
Further, the first mutual inductance position is a position when the mutual inductance formed by the first receiving coil and the main transmitting coil is maximum, and the second mutual inductance position is a position where the center of the second receiving coil is located at the outer circumference of the auxiliary transmitting coil.
Further, the outer diameter of the main transmitting coil is 1.8-2.2 times of the distance between the receiving coils.
Further, when receiving coil set up in the horizontal intraductal time of unmanned aerial vehicle undercarriage bottom, receiving coil interval is the interval of horizontal pipe of unmanned aerial vehicle undercarriage bottom.
Further, the offset threshold value of the anti-offset wireless charging coupling mechanism is determined by the sum Mmax of the maximum value of the mutual inductance of the first receiving coil between the first mutual inductance position and the charging transmitting platform and the minimum value of the mutual inductance of the second receiving coil between the second mutual inductance position and the charging transmitting platform,
when M1+ M2 is less than 0.7 Mmax, judging that the offset distance at the moment can not meet the use requirement of the anti-offset wireless charging coupling mechanism;
when M1+ M2 is more than or equal to 0.7 multiplied by Mmax, the current offset distance is judged to meet the use requirement of the anti-offset wireless charging coupling mechanism, and d1 is the relative offset distance threshold of the anti-offset wireless charging coupling mechanism;
wherein, M1 is mutual inductance between the first receiving coil and the charging transmitting platform in the coupling state, and M2 is mutual inductance between the second receiving coil and the charging transmitting platform in the coupling state.
Further, the variation trend of the equivalent coupling coefficient ke of the first receiving coil or the second receiving coil and the charging transmitting platform changes with the offset distance d of the anti-offset wireless charging coupling mechanism,
when | d | is less than or equal to | d1| and the equivalent coupling coefficient ke is more than or equal to 0.1, judging that the coupling between the elements of the anti-deviation wireless charging coupling mechanism in the allowable deviation range meets the requirement;
when | d | is less than or equal to | d1| and the equivalent coupling coefficient ke is less than 0.1; and determining that the coupling between the elements of the anti-offset wireless charging coupling mechanism in the allowable offset range is not satisfactory.
Further, the overall transmission efficiency η of the anti-offset wireless charging coupling mechanism fluctuates with the variation of the offset distance d thereof, wherein,
when | d | ≦ d1|, and η > 70%, determining that the overall transmission efficiency of the anti-offset wireless charging coupling mechanism in the allowable offset range meets the requirement;
and when the | d | ≧ d1|, and eta is less than 70%, judging that the overall transmission efficiency of the anti-deviation wireless charging coupling mechanism in the allowable deviation range does not meet the requirement.
Further, the output current I of the anti-offset wireless charging coupling mechanism fluctuates along with the change of the offset distance d of the anti-offset wireless charging coupling mechanism, wherein,
when | d | < | d1|, imin ≤ I < Imax, determining that the output current of the anti-deviation wireless charging coupling mechanism in the allowable deviation range meets the requirement;
when | d | ≦ d1|, and I < Imin or I > Imax, determining that the output current of the anti-deviation wireless charging coupling mechanism in the allowable deviation range is not satisfactory;
and Imin is the minimum output current allowed by the anti-deviation wireless charging coupling mechanism, and Imax is the maximum output current allowed by the anti-deviation wireless charging coupling mechanism.
Compared with the prior art, the anti-deviation wireless charging coupling mechanism has the advantages that the receiving coil is arranged in the bottom transverse pipe of the unmanned aerial vehicle, and the anti-deviation wireless charging coupling mechanism formed by combining the receiving coil with the wireless charging transmitting platform arranged on the ground has small volume occupation ratio, so that the influence on the performance and reliability of the whole unmanned aerial vehicle can be reduced, the extra energy loss of the unmanned aerial vehicle is reduced, and meanwhile, larger air resistance cannot be caused; the anti-deviation wireless charging coupling structure can reduce the influence of a wireless charging mode on the electromagnetic compatibility of the whole unmanned aerial vehicle, and is simple in structure and low in cost of wireless charging equipment; meanwhile, the charging efficiency of the wireless charging system is also considered.
Particularly, a small transmitting coil is added at the concentric position of the main transmitting coil, and the small coil is connected with the large transmitting coil in series, so that the current and the direction in the small coil are ensured to be consistent with those of the large transmitting coil, and the disorder of a magnetic field is effectively avoided; according to the invention, the magnetic field intensity of the central part can be improved through the design, the problem that one of the receiving coils in the two bottom transverse pipes of the undercarriage of the unmanned aerial vehicle falls into the vicinity of the central area and the coupling magnetic field intensity is low is solved, and the stability of wireless charging can be ensured.
Particularly, the sizes of the main transmitting coil and the auxiliary transmitting coil are set according to the distance between the horizontal pipes at the bottom of the landing gear of the specific type of the unmanned aerial vehicle, so that one receiving coil can be positioned at the position with the best coupling state with the main transmitting coil, namely the position of the maximum mutual inductance, the other receiving coil can be positioned at the position of the outer edge of the small transmitting coil, and the position of the outer edge of the small transmitting coil is the position with the most obvious magnetic field offset, namely the position of the minimum mutual inductance; the minimum size and the minimum number of turns of the small transmitting coil can reduce the transmission efficiency and the power loss of the system caused by the offset phenomenon as much as possible, and further the anti-offset capability of the anti-offset wireless charging coupling mechanism is realized by a strong and weak matching method.
Particularly, the receiving coils are respectively arranged in the transverse pipes at the bottom of the undercarriage of the unmanned aerial vehicle, so that the wireless charging receiving coils can be hidden, the phenomena of air resistance and poor appearance caused by the external arrangement of the wireless charging receiving coils of the unmanned aerial vehicle are avoided, the distance between the receiving coils and the transmitting coils can be closer, the mutual inductance and the coupling coefficient are enhanced, and the influence of the strong strength of a transmitting magnetic field on a flight control system at the upper end part of the unmanned aerial vehicle and the electromagnetic interference on remote control or communication electromagnetic wave signals are avoided; according to the invention, the horizontal pipe at the bottom of the undercarriage is used as the shell of the squirrel cage coil, so that the coil can be fully protected, and the reliability of the wireless charging system is improved.
Particularly, according to the invention, the threshold value of the offset distance of the anti-offset wireless charging coupling mechanism is determined according to the mutual inductance between the first receiving coil and the charging transmitting platform and the mutual inductance between the second receiving coil and the charging transmitting platform, and the accurate determination of the threshold value of the offset distance of the anti-offset wireless charging coupling mechanism can meet the deviation between the actual landing position and the positioning position of the unmanned aerial vehicle, so that the unmanned aerial vehicle can land autonomously, and the overall transmission efficiency of the anti-offset wireless charging coupling mechanism is improved.
Particularly, the invention proves whether the offset distance threshold of the anti-offset wireless charging coupling mechanism meets the use requirement or not according to the equivalent coupling coefficients of the first receiving coil, the second receiving coil and the charging emission platform.
Particularly, whether the anti-deviation wireless charging coupling mechanism meets the energy transmission requirement within the allowable deviation distance is judged according to the variation trend of the overall transmission efficiency of the anti-deviation wireless charging coupling mechanism in the deviation process, and the overall transmission efficiency is an important parameter for judging the wireless charging effect in the wireless charging process.
Particularly, the offset distance threshold of the anti-offset wireless charging coupling mechanism is further corrected according to the variation trend of the output current of the anti-offset wireless charging coupling mechanism in the offset process, and the output current is the other important parameter for judging the wireless charging effect in the wireless charging process.
Drawings
Fig. 1 is a schematic structural diagram of an anti-deviation wireless charging coupling mechanism applied to an unmanned aerial vehicle according to an embodiment;
FIG. 2 is a graph of the receiving coil spacing-flux density curve of the embodiment with the addition of a small transmitting coil;
FIG. 3 is a graph of the relationship between the offset distance of the anti-drift wireless charging coupling mechanism-the equivalent coupling coefficient of the receiving coil and the charging transmitting platform and the offset distance of the anti-drift wireless charging coupling mechanism-the mutual inductance between the receiving coil and the charging transmitting platform according to the embodiment;
fig. 4 is a graph of a broken line relationship between the offset distance of the anti-offset wireless charging coupling mechanism and the output current and between the offset distance of the anti-offset wireless charging coupling mechanism and the overall transmission efficiency according to the embodiment.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principles of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Fig. 1 is a schematic structural diagram of an anti-deviation wireless charging coupling mechanism applied to an unmanned aerial vehicle according to an embodiment of the present invention, where the anti-deviation wireless charging coupling mechanism includes: the charging and transmitting platform is used for transmitting energy to the receiving coil and comprises a main transmitting coil and an auxiliary transmitting coil which is in a concentric circle structure with the main transmitting coil; receiving coil sets up in horizontal intraduct of unmanned aerial vehicle undercarriage bottom, works as when receiving coil charges, unmanned aerial vehicle descends the transmitting platform top of charging, be used for receiving the energy of transmitting platform transmission charges, and will energy transmission gives actuating mechanism, receiving coil including set up in the first receiving coil of first mutual inductance position with set up in the second receiving coil of the mutual inductance position of second, wherein, first mutual inductance position is the mutual biggest position of first receiving coil and main transmitting coil, the mutual inductance position of second does the position is followed outward to vice transmitting coil, the mutual inductance position of second accords with the standard with the mutual inductance sum in charging transmitting platform and receiving coil magnetic field of first mutual inductance position.
Specifically, the charging launching platform is arranged below the landing position of the unmanned aerial vehicle, and is combined with the receiving coil arranged in the transverse pipe at the bottom of the landing gear of the unmanned aerial vehicle to form the anti-deviation wireless charging coupling mechanism, so that the anti-deviation wireless charging coupling mechanism has the advantages of small volume ratio, capability of improving the performance and reliability of the whole machine, reduction of extra energy loss of the unmanned aerial vehicle and no larger air resistance; the anti-deviation wireless charging coupling structure can reduce the influence of a wireless charging mode on the electromagnetic compatibility of the whole unmanned aerial vehicle, and is simple in structure and low in cost of wireless charging equipment; meanwhile, the charging efficiency of the wireless charging system is also considered.
The auxiliary transmitting coil is arranged in the center of the main transmitting coil, the outer diameter of the auxiliary transmitting coil is smaller than the inner diameter of the main transmitting coil, and the auxiliary transmitting coil and the main transmitting coil are connected in series and the current directions are consistent.
The first mutual inductance position is the position when the mutual inductance formed by the first receiving coil and the main transmitting coil is maximum, and the second mutual inductance position is the position where the center of the second receiving coil is located at the outer circumference of the auxiliary transmitting coil.
Specifically, the small transmitting coil is added at the concentric position of the main transmitting coil, and the small coil is connected with the large transmitting coil in series, so that the current and the direction in the small coil are ensured to be consistent with those of the large transmitting coil, and the disorder of a magnetic field is effectively avoided; according to the invention, the magnetic field intensity of the central part can be improved through the design, the problem that one receiving coil of the squirrel cage coils in the two bottom transverse pipes of the undercarriage of the unmanned aerial vehicle falls into the vicinity of the central area and the coupling magnetic field intensity is low is solved, and the stability of wireless charging can be ensured.
Referring to fig. 2, it is a graph of a relationship between a receiving coil pitch and a magnetic flux density curve after adding an auxiliary transmitting coil in the embodiment of the present invention, the cross-sectional dimensions of two bottom transverse pipes of an unmanned aerial vehicle are 25mm in inner diameter, 27mm in outer diameter, 200mm in length, 220mm in a distance between the bottom transverse pipes of an undercarriage, the outer diameter of the main transmitting coil 11 is 440mm, 15 turns are provided, the small coil is designed to have an outer diameter of 100mm, and 5 turns are provided.
Specifically, according to the reasonable distance between the two receiving coils, the transmitting coils are arranged, so that one receiving coil can be located at the position with the best coupling state with the main transmitting coil, namely the position with the maximum mutual inductance, the other receiving coil is located at the position of the outer edge of the small transmitting coil, and the position of the outer edge of the small transmitting coil is the position with the most obvious magnetic field offset, namely the position with the minimum mutual inductance; the minimum size and the minimum number of turns of the small transmitting coil can reduce the transmission efficiency and the power loss of the system caused by the offset phenomenon as much as possible, and further the anti-offset capability of the anti-offset wireless charging coupling mechanism is realized by a strong and weak matching method.
The outer diameter of the main transmitting coil can be designed to be compact, namely 1.8-2.2 times of the distance between the receiving coils.
When receiving coil set up in unmanned aerial vehicle undercarriage bottom is violently intraductal, receiving coil interval is the interval that unmanned aerial vehicle undercarriage bottom was violently managed.
Particularly, the receiving coils are respectively arranged in the transverse pipes at the bottom of the undercarriage of the unmanned aerial vehicle, so that the wireless charging receiving coils can be hidden, the phenomena of air resistance and poor appearance caused by the external arrangement of the wireless charging receiving coils of the unmanned aerial vehicle are avoided, the distance between the receiving coils and the transmitting coils can be closer, the mutual inductance and the coupling coefficient are enhanced, and the influence of the strength of a transmitting magnetic field on a flight control system at the upper end part of the unmanned aerial vehicle and the electromagnetic interference on remote control or communication electromagnetic wave signals are avoided; according to the invention, the horizontal pipe at the bottom of the undercarriage is used as the shell of the squirrel cage coil, so that the coil can be fully protected, and the reliability of the wireless charging system is improved.
The offset threshold value of the anti-offset wireless charging coupling mechanism is judged by the sum Mmax of the maximum mutual inductance value of the first receiving coil between the first mutual inductance position and the charging transmitting platform and the minimum mutual inductance value of the second receiving coil between the second mutual inductance position and the charging transmitting platform, wherein,
when M1+ M2 is less than 0.7 Mmax, judging that the offset distance at the moment can not meet the use requirement of the anti-offset wireless charging coupling mechanism;
when M1+ M2 is more than or equal to 0.7 multiplied by Mmax, the current offset distance is judged to meet the use requirement of the anti-offset wireless charging coupling mechanism, and d1 is the relative offset distance threshold of the anti-offset wireless charging coupling mechanism;
and M1 is mutual inductance between the first receiving coil and the charging transmitting platform in a coupling state, and M2 is mutual inductance between the second receiving coil and the charging transmitting platform in the coupling state.
Specifically, the present invention does not limit the maximum value of the sum of the mutual inductance between the first receiving coil and the charging transmitting platform and the mutual inductance between the second receiving coil and the charging transmitting platform, and in the embodiment of the present invention, mmax =6.78 μ H.
Specifically, according to the mutual inductance between the first receiving coil and the charging transmitting platform and the mutual inductance between the second receiving coil and the charging transmitting platform, the offset distance threshold of the anti-offset wireless charging coupling mechanism is determined, the offset distance threshold of the anti-offset wireless charging coupling mechanism can be accurately determined, the landing position deviation caused by low precision of the unmanned aerial vehicle during landing can be met, the unmanned aerial vehicle can land and charge autonomously, and the overall transmission efficiency of the anti-offset wireless charging coupling mechanism is improved.
Please refer to fig. 3, which is a graph illustrating a relationship between an offset distance of the anti-offset wireless charging coupling mechanism and an equivalent coupling coefficient between the receiving coil and the charging transmitting platform, and an offset distance of the anti-offset wireless charging coupling mechanism and a mutual inductance between the receiving coil and the charging transmitting platform according to an embodiment of the present invention, a variation trend of an equivalent coupling coefficient ke of the first receiving coil or the second receiving coil and the charging transmitting platform changes with an offset distance d of the anti-offset wireless charging coupling mechanism,
when | d | is less than or equal to | d1| and the equivalent coupling coefficient ke is more than or equal to 0.1, judging that the coupling among the elements of the anti-deviation wireless charging coupling mechanism in the allowable deviation range meets the requirement;
when | d | is less than or equal to | d1| and the equivalent coupling coefficient ke is less than 0.1; and determining that the coupling between the elements of the anti-deviation wireless charging coupling mechanism in the allowable deviation range is not satisfactory.
Specifically, the invention proves whether the offset distance threshold of the anti-offset wireless charging coupling mechanism meets the use requirement according to the equivalent coupling coefficient of the first receiving coil or the second receiving coil and the charging emission platform, and the invention proves that the charging position deviation caused by inaccurate landing of the unmanned aerial vehicle is allowed according to the offset distance threshold of the anti-offset wireless charging coupling mechanism measured by tests, and the transmission power loss can be effectively reduced, so that the coupling mechanisms can be closely coupled, the magnetic leakage is reduced, and the reliability of the unmanned aerial vehicle in the wireless charging process is enhanced.
Please refer to fig. 4, which is a graph illustrating a broken line relationship between an offset distance of an anti-offset wireless charging coupling mechanism, an output current, and an offset distance of the anti-offset wireless charging coupling mechanism, and an overall transmission efficiency of the anti-offset wireless charging coupling mechanism according to an embodiment of the present invention, wherein the overall transmission efficiency η of the anti-offset wireless charging coupling mechanism fluctuates with a change of the offset distance d,
when | d | ≦ d1|, and η > 70%, determining that the overall transmission efficiency of the anti-offset wireless charging coupling mechanism in the allowable offset range meets the requirement;
and when the | d | ≧ d1|, and eta is less than 70%, judging that the overall transmission efficiency of the anti-deviation wireless charging coupling mechanism in the allowable deviation range does not meet the requirement.
Specifically, whether the anti-deviation wireless charging coupling mechanism meets the energy transmission requirement within the allowable deviation distance is judged according to the variation trend of the overall transmission efficiency of the anti-deviation wireless charging coupling mechanism in the deviation process, and the overall transmission efficiency is judged as an important parameter of the wireless charging effect in the wireless charging process.
The output current I of the anti-offset wireless charging coupling mechanism fluctuates along with the change of the offset distance d of the anti-offset wireless charging coupling mechanism, wherein,
when | d | ≦ d1|, and Imin is ≦ I ≦ Imax, determining that the output current of the anti-migration wireless charging coupling mechanism in the allowable migration range meets the requirement;
when | d | ≦ d1|, and I < Imin or I > Imax, judging that the output current of the anti-offset wireless charging coupling mechanism in the allowable offset range is not satisfactory;
and Imin is the minimum output current allowed by the anti-deviation wireless charging coupling mechanism, and Imax is the maximum output current allowed by the anti-deviation wireless charging coupling mechanism.
With continuing reference to fig. 4, in the examples of the present invention, d1=110mm, imin =1.96a, imax =2.6a.
Specifically, the offset distance threshold of the anti-offset wireless charging coupling mechanism is further corrected according to the variation trend of the output current of the anti-offset wireless charging coupling mechanism in the offset process, and the output current is the other important parameter for judging the wireless charging effect in the wireless charging process.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An anti-skew wireless charging coupling mechanism, comprising: the charging and transmitting platform is used for transmitting energy to the receiving coil and comprises a main transmitting coil and an auxiliary transmitting coil which is in a concentric circle structure with the main transmitting coil; receive coil sets up in horizontal intraduct portion in unmanned aerial vehicle undercarriage bottom, works as when receive coil charges, the unmanned aerial vehicle descends the transmission platform top of charging, be used for receiving the energy of transmission platform transmission of charging, and will the energy transmission gives actuating mechanism, receive coil including set up in the first receive coil of first mutual inductance position with set up in the second receive coil of the mutual inductance position of second, wherein, first mutual inductance position is the mutual biggest position of first receive coil and main transmit coil, the mutual inductance position of second does the outer position of following of vice transmit coil, the mutual inductance position of second accords with the standard with the mutual inductance sum in transmission platform and the receive coil magnetic field of charging of first mutual inductance position.
2. The anti-deviation wireless charging coupling mechanism according to claim 1, wherein the secondary transmitting coil is arranged at the inner center of the main transmitting coil, the outer diameter of the secondary transmitting coil is smaller than the inner diameter of the main transmitting coil, and the secondary transmitting coil is connected with the main transmitting coil in series and has the same current direction.
3. The anti-drift wireless charging coupling mechanism according to claim 2, wherein the first mutual inductance position is a position at which a mutual inductance formed by the first receiving coil and the primary transmitting coil is maximum, and the second mutual inductance position is a position at which a center of the second receiving coil is located at an outer circumference of the secondary transmitting coil.
4. The anti-drift wireless charging coupling mechanism according to claim 5, wherein the outer diameter of the primary transmitting coil is 1.8-2.2 times the pitch of the receiving coil.
5. The anti-migration wireless charging coupling mechanism according to claim 4, wherein when the receiver coil is disposed in the bottom cross tube of the landing gear of the unmanned aerial vehicle, the distance between the receiver coils is the distance between the bottom cross tubes of the landing gear of the unmanned aerial vehicle.
6. The anti-skew wireless charging coupling mechanism of claim 5, wherein a skew threshold of the anti-skew wireless charging coupling mechanism is determined by a sum Mmax of a maximum mutual inductance of the first receiver coil between a first mutual inductance location and a charging transmit platform and a minimum mutual inductance of the second receiver coil between a second mutual inductance location and the charging transmit platform, wherein,
when M1+ M2 is less than 0.7 Mmax, judging that the offset distance at the moment can not meet the use requirement of the anti-offset wireless charging coupling mechanism;
when M1+ M2 is more than or equal to 0.7 multiplied by Mmax, the current offset distance is judged to meet the use requirement of the anti-offset wireless charging coupling mechanism, and d1 is the relative offset distance threshold of the anti-offset wireless charging coupling mechanism;
wherein, M1 is mutual inductance between the first receiving coil and the charging transmitting platform in the coupling state, and M2 is mutual inductance between the second receiving coil and the charging transmitting platform in the coupling state.
7. The anti-excursion wireless charging coupling mechanism according to claim 6, wherein a trend of a variation of an equivalent coupling coefficient ke of said first or second receiving coil and a charging transmitting platform varies with an excursion distance d of said anti-excursion wireless charging coupling mechanism,
when | d | is less than or equal to | d1| and the equivalent coupling coefficient ke is more than or equal to 0.1, judging that the coupling between the elements of the anti-deviation wireless charging coupling mechanism in the allowable deviation range meets the requirement;
when | d | is less than or equal to | d1| and the equivalent coupling coefficient ke is less than 0.1; and determining that the coupling between the elements of the anti-deviation wireless charging coupling mechanism in the allowable deviation range is not satisfactory.
8. The anti-migration wireless charging coupling mechanism according to claim 6, wherein the overall transmission efficiency η of the anti-migration wireless charging coupling mechanism fluctuates with the migration distance d thereof, wherein,
when | d | ≦ d1|, and η > 70%, determining that the overall transmission efficiency of the anti-offset wireless charging coupling mechanism in the allowable offset range meets the requirement;
and when the | d | ≧ d1|, and eta is less than 70%, judging that the overall transmission efficiency of the anti-deviation wireless charging coupling mechanism in the allowable deviation range does not meet the requirement.
9. The anti-migration wireless charging coupling mechanism according to claim 6, wherein the output current I of the anti-migration wireless charging coupling mechanism fluctuates with the variation of the migration distance d thereof, wherein,
when | d | < | d1|, imin ≤ I < Imax, determining that the output current of the anti-deviation wireless charging coupling mechanism in the allowable deviation range meets the requirement;
when | d | ≦ d1|, and I < Imin or I > Imax, determining that the output current of the anti-deviation wireless charging coupling mechanism in the allowable deviation range is not satisfactory;
and Imin is the minimum output current allowed by the anti-deviation wireless charging coupling mechanism, and Imax is the maximum output current allowed by the anti-deviation wireless charging coupling mechanism.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120161696A1 (en) * | 2010-10-29 | 2012-06-28 | Qualcomm Incorporated | Wireless energy transfer via coupled parasitic resonators |
| US20150302983A1 (en) * | 2013-01-09 | 2015-10-22 | Korea Electrotechnology Research Institute | Wireless power transmission system for free-position wireless charging of multiple devices |
| CN110729820A (en) * | 2019-07-15 | 2020-01-24 | 国网江西省电力有限公司电力科学研究院 | Unmanned aerial vehicle and machine carries wireless receiving element, for its wireless anti skew coupling coil who charges thereof |
| CN111301187A (en) * | 2019-12-05 | 2020-06-19 | 江苏方天电力技术有限公司 | Wireless charging coupling device and unmanned aerial vehicle |
| CN111319483A (en) * | 2020-04-02 | 2020-06-23 | 江苏方天电力技术有限公司 | Wireless coupling mechanism and unmanned aerial vehicle that charge |
| CN111775738A (en) * | 2020-07-28 | 2020-10-16 | 重庆华创智能科技研究院有限公司 | Coupling mechanism for improving anti-deviation capability of unmanned aerial vehicle wireless charging system |
| CN114825565A (en) * | 2022-04-19 | 2022-07-29 | 湖北工业大学 | Method for designing transmitting unit of dynamic wireless charging system of electric automobile |
-
2022
- 2022-11-14 CN CN202211419076.9A patent/CN115664059B/en not_active Withdrawn - After Issue
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120161696A1 (en) * | 2010-10-29 | 2012-06-28 | Qualcomm Incorporated | Wireless energy transfer via coupled parasitic resonators |
| US20150302983A1 (en) * | 2013-01-09 | 2015-10-22 | Korea Electrotechnology Research Institute | Wireless power transmission system for free-position wireless charging of multiple devices |
| CN110729820A (en) * | 2019-07-15 | 2020-01-24 | 国网江西省电力有限公司电力科学研究院 | Unmanned aerial vehicle and machine carries wireless receiving element, for its wireless anti skew coupling coil who charges thereof |
| CN111301187A (en) * | 2019-12-05 | 2020-06-19 | 江苏方天电力技术有限公司 | Wireless charging coupling device and unmanned aerial vehicle |
| CN111319483A (en) * | 2020-04-02 | 2020-06-23 | 江苏方天电力技术有限公司 | Wireless coupling mechanism and unmanned aerial vehicle that charge |
| CN111775738A (en) * | 2020-07-28 | 2020-10-16 | 重庆华创智能科技研究院有限公司 | Coupling mechanism for improving anti-deviation capability of unmanned aerial vehicle wireless charging system |
| CN114825565A (en) * | 2022-04-19 | 2022-07-29 | 湖北工业大学 | Method for designing transmitting unit of dynamic wireless charging system of electric automobile |
Non-Patent Citations (1)
| Title |
|---|
| 李中启等: "无线电能传输系统带磁屏蔽任意位置矩形线圈的互感计算", vol. 37, no. 17, pages 4294 - 4303 * |
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