CN210575348U

CN210575348U - Adjustable inductor, power supply system and unmanned aerial vehicle

Info

Publication number: CN210575348U
Application number: CN201921937532.2U
Authority: CN
Inventors: 张�诚
Original assignee: Xianyang Zhongkai Ruida Electronic Co ltd
Current assignee: Xianyang Zhongkai Ruida Electronic Co ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-05-19
Anticipated expiration: 2029-11-11

Abstract

The embodiment of the disclosure relates to an adjustable inductor, a power supply system and an unmanned aerial vehicle. The adjustable inductor includes: the outer surface of the first magnetic ring is provided with a first annular groove extending along the circumferential direction, and a first coil is wound in the first annular groove; the second magnetic ring is coaxially arranged outside the first magnetic ring and can rotate around the first magnetic ring, a second annular groove extending along the circumferential direction is formed in the inner surface of the second magnetic ring, and a second coil is wound in the second annular groove; wherein, the winding directions of the first coil and the second coil are opposite. The embodiment of the disclosure can reduce the influence of external electromagnetic interference on the working of the first coil and the second coil to a certain extent, and increase the sensitivity and accuracy of system signal receiving.

Description

Adjustable inductor, power supply system and unmanned aerial vehicle

Technical Field

The embodiment of the disclosure relates to the technical field of inductors, in particular to an adjustable inductor, a power supply system and an unmanned aerial vehicle.

Background

The inductor is an important component in an unmanned aerial vehicle power subsystem, is an element for converting electric energy into magnetic energy and storing the magnetic energy, and can generate a magnetic field during operation. In the correlation technique, adopt the fixed inductor mode of multiunit usually among the unmanned aerial vehicle, and the unable great ripple voltage that the elimination system unit of fixed inductance parameter multiplied for signal disorder and distortion take place for the unmanned aerial vehicle power divides the interior signal of system receives the clutter interference easily, especially when unmanned aerial vehicle flies in alpine and high temperature area, receive the influence of environment and temperature, very easily appear the phenomenon that received signal is unusual and unable normal work, in addition, stronger ripple voltage can produce surge voltage or electric current in the system, still can lead to equipment to damage when serious.

Accordingly, there is a need to ameliorate one or more of the problems with the related art solutions described above.

It is noted that this section is intended to provide a background or context to the embodiments of the disclosure that are recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.

SUMMERY OF THE UTILITY MODEL

It is an object of embodiments of the present disclosure to provide an adjustable inductor, a power supply system and a drone, thereby overcoming, at least to some extent, one or more problems resulting from limitations and disadvantages of the related art.

According to a first aspect of embodiments of the present disclosure, there is provided an adjustable inductor comprising:

the outer surface of the first magnetic ring is provided with a first annular groove extending along the circumferential direction, and a first coil is wound in the first annular groove;

the second magnetic ring is coaxially arranged outside the first magnetic ring and can rotate around the first magnetic ring, a second annular groove extending along the circumferential direction is formed in the inner surface of the second magnetic ring, and a second coil is wound in the second annular groove;

wherein, the winding directions of the first coil and the second coil are opposite.

In an embodiment of the disclosure, a gap between the first magnetic ring and the second magnetic ring is 0.3-0.5 mm.

In an embodiment of the present disclosure, a winding direction of the first coil is a clockwise direction, and a winding direction of the second coil is a counterclockwise direction.

In an embodiment of the present disclosure, the first coil is a Tx coil.

In an embodiment of the present disclosure, the second coil is an Rx coil.

In an embodiment of the disclosure, a notch is disposed on an edge of one side wall of the first annular groove, and is used for accommodating a wire end of the first coil.

In an embodiment of the present disclosure, a notch is disposed on an edge of one side wall of the second annular groove, and is used for accommodating a terminal of the second coil.

In an embodiment of the disclosure, the first magnetic ring and the second magnetic ring are made of nickel-zinc ferrite magnetic materials.

According to a second aspect of the embodiments of the present disclosure, there is provided a power supply system including the adjustable inductor according to any one of the embodiments.

According to a third aspect of the embodiments of the present disclosure, there is provided an unmanned aerial vehicle including the power supply system of the above embodiments.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

in the embodiment of the disclosure, the second magnetic ring is coaxially disposed outside the first magnetic ring and can rotate around the first magnetic ring, so that the first coil and the second coil are both located inside the second magnetic ring. When the magnetic rotor is used, the first magnetic ring is fixed on the device to serve as a stator, and the second magnetic ring can synchronously rotate according to the working frequency and the voltage set by the system to serve as a rotor. On one hand, the internal and external rotation design achieves the magnetic shielding effect, and the influence of external electromagnetic interference on the first coil and the second coil during working is reduced to a certain extent; on the other hand, the moving and static two-stage coils are paired and designed, output parameters for inhibiting ripple voltage are synchronously adjusted along with the change of the working frequency and voltage of the power supply system unit, so that inductance parameters consistent with the matching of the system are obtained, the ripple voltage with large interference and generated by the system unit (DC/DC conversion) is effectively inhibited, the stability and consistency of output signals are ensured, the system unit obtains stable voltage and current in a changeable environment, the requirement on the accuracy of the power supply output signals in any state is met, and the sensitivity and the accuracy of signal receiving are improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

Fig. 1 shows a schematic diagram of a tunable inductor in an exemplary embodiment of the present disclosure;

FIG. 2 shows a schematic view of a first magnetic ring structure without windings in an exemplary embodiment of the disclosure;

FIG. 3 shows a schematic view of a second magnetic ring without windings in an exemplary embodiment of the disclosure;

FIG. 4 shows a schematic view of a first magnetic ring structure of the windings in an exemplary embodiment of the present disclosure;

fig. 5 shows a schematic view of a second magnetic ring structure of the winding in an exemplary embodiment of the present disclosure.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the drawings are merely schematic illustrations of embodiments of the disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities.

The exemplary embodiment first provides an adjustable inductor. Referring to fig. 1-5, the adjustable inductor may include a first magnetic loop 100 and a second magnetic loop 200. The outer surface of the first magnetic ring 100 is provided with a first annular groove 110 extending along the circumferential direction, and a first coil 111 is wound in the first annular groove 110. The second magnetic ring 200 is coaxially disposed outside the first magnetic ring 100 and can rotate around the first magnetic ring 100, a second annular groove 210 extending along the circumferential direction is disposed on an inner surface of the second magnetic ring 200, and a second coil 211 is wound in the second annular groove 210. The first coil 111 and the second coil 211 are wound in opposite directions.

Through the adjustable inductor, the second magnetic ring 200 is coaxially disposed outside the first magnetic ring 100 and can rotate around the first magnetic ring 100, so that the first coil 111 and the second coil 211 are both located inside the second magnetic ring 200. When in use, the first magnetic ring 100 is fixed on the device as a stator, and the second magnetic ring 200 can synchronously rotate according to the working frequency and voltage set by the system to work as a rotor. On the one hand, inside and outside complex rotating design has reached the magnetic screen effect, to a certain extent, alleviate first coil 111 and second coil 211 during operation and received external electromagnetic interference's influence, on the other hand, move, quiet two-stage coil pairs uses the design, along with the output parameter of the synchronous adjustment of the change of electrical power generating system unit operating frequency and voltage, and then obtain and match unanimous inductance parameter with the system, effectively restrain the great ripple voltage of interference that system unit (DC/DC conversion) bred, ensure output signal's stability and uniformity, make system unit obtain stable voltage and electric current under changeable environment, satisfy power output signal's precision requirement under the optional condition, increase signal reception's sensitivity and precision.

Next, each part of the above-described adjustable inductor in the present exemplary embodiment will be described in more detail with reference to fig. 1 to 5.

In one embodiment, the materials of the first magnetic ring 100 and the second magnetic ring 200 are both nickel-zinc-ferrite magnetic materials. Specifically, the first magnetic ring 100 and the second magnetic ring 200 can be made of a wide-temperature and wide-frequency nickel-zinc ferrite magnetic material, so that the applicable frequency range of the two magnetic rings is 5 KHz-20 MHz, and the applicable temperature range is-55 ℃ to 155 ℃, so that the working parameters of the adjustable inductor are more stable under the conditions of wide frequency and wide temperature. In processing, in order to make the first magnetic ring 100 and the second magnetic ring 200 have better rotating fit, the processing modes of inner and outer circle grinding, end surface plane grinding and inner and outer groove T-shaped grinding heads can be adopted. In addition, in practical applications, the frequencies of the first magnetic ring 100 and the second magnetic ring 200 should be matched with each other, that is, the first magnetic ring 100 with high frequency is correspondingly matched with the second magnetic ring 200 with high frequency, and the first magnetic ring 100 with low frequency is correspondingly matched with the second magnetic ring 200 with low frequency.

In one embodiment, the gap between the first magnetic ring 100 and the second magnetic ring 200 is 0.3-0.5mm, so that the magnetic shielding effect of the adjustable inductor is ensured. In addition, since the adjustable inductor adopts the design of two-pole magnetic rings, the structure should ensure the regularity of magnetic flux distribution in the air gap between the first magnetic ring 100 and the second magnetic ring 200, so that when an excitation voltage is applied to the first magnetic ring 100, the second magnetic ring 200 generates an induced potential through electromagnetic coupling, and generates an appropriate inductance parameter according to the voltage and frequency changes. Therefore, the gap range cannot be too small nor too large.

In one embodiment, the winding direction of the first coil 111 is clockwise, and the winding direction of the second coil 211 is counterclockwise. Specifically, the first coil is a Tx coil, and the second coil is an Rx coil. Wherein the Tx coil is a transmitting coil and the Rx coil is a receiving coil. Of course, the specific number of turns of the Rx coil and the Tx coil and the diameter of the coil are not limited in this disclosure, and can be set according to the frequency and the application environment of the actual requirement.

In one embodiment, one of the side wall edges of the first annular groove 110 is provided with a notch 112 for accommodating the end of the first coil 111. Thus, the thread end of the first coil 111 does not influence the rotation of the second magnetic ring 200 around the first magnetic ring 100.

Optionally, in some embodiments, one of the side wall edges of the second annular groove 210 is provided with a notch 212 for accommodating the end of the second coil 211. Similarly, the gap 212 is also to prevent the end of the second coil 211 from affecting the rotation of the second magnetic ring 200.

Two adjustable inductors with the same size but different parameters are respectively selected for temperature test, and the specific basic parameters are shown in the following table:

temperature rise test: a plurality of adjustable inductors of two types are respectively selected, and after the primary applied pulse amplitude is 6.3V, the pulse width is 0.5 mu s, the pulse repetition frequency is 10kHz, and the secondary applied load is 100 omega, the temperature rise is tested. Through tests, the average temperature rise of the adjustable inductor with the serial number 1 is 19.8K, the average temperature rise of the adjustable inductor with the serial number 2 is 20.1K, the average temperature rise is less than 40K, and the temperature rise test is qualified.

And (3) low-temperature test: a plurality of adjustable inductors of two types are respectively selected and kept for 24 hours at the temperature of-55 ℃, the appearances of the adjustable inductors of the two types are not cracked, and the stable electrical parameters (the change is not more than 5%) meet the requirements.

High-temperature test: a plurality of adjustable inductors of two types are respectively selected, the temperature is kept for 96 hours at the temperature of +155 ℃, the appearances of the adjustable inductors of two types are not cracked, and the stable electrical parameters (the change is not more than 5%) meet the requirements.

High and low temperature impact test: and respectively selecting a plurality of adjustable inductors of two types, and carrying out 5 temperature impact tests on the product at-55 ℃/30min and high temperature of 155 ℃/30min, wherein the intermediate conversion time is less than or equal to 5min, the two types of adjustable inductors have no cracks in appearance, and the electrical performance (the change is not more than 5%) of the product meets the requirements.

The present exemplary embodiment further provides a power supply system, where the power supply system includes the adjustable inductor in any of the above embodiments, and the power supply system can obtain stable voltage and current in a variable environment, meet the requirement of precision of a power supply output signal in any state, and increase sensitivity and precision of signal reception.

The present exemplary embodiment also provides an unmanned aerial vehicle, which includes the power supply system in the above embodiments. The unmanned aerial vehicle is less affected by abnormal environment, and can normally work particularly in alpine (-55 ℃) and high-temperature (155 ℃) areas.

It is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like in the foregoing description are used for indicating or indicating the orientation or positional relationship illustrated in the drawings, merely for the convenience of describing the disclosed embodiments and for simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and therefore should not be considered limiting of the disclosed embodiments.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present disclosure, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present disclosure, unless otherwise specifically stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In the embodiments of the present disclosure, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. An adjustable inductor, comprising:

2. The adjustable inductor as recited in claim 1, wherein a gap between the first magnetic loop and the second magnetic loop is 0.3-0.5 mm.

3. The adjustable inductor of claim 2, wherein the first winding is wound clockwise and the second winding is wound counterclockwise.

4. The tunable inductor of claim 3, wherein the first coil is a Tx coil.

5. The adjustable inductor according to claim 4, wherein the second coil is an Rx coil.

6. An adjustable inductor according to any one of claims 1 to 5, wherein one of the side wall edges of the first annular recess is provided with a notch for receiving the end of the first coil.

7. An adjustable inductor according to claim 6, wherein one of the side wall edges of the second annular recess is provided with a notch for receiving the end of the second coil.

8. The adjustable inductor as recited in claim 1, wherein a material of the first magnetic loop and the second magnetic loop is a nickel zinc ferrite magnetic material.

9. A power supply system comprising the adjustable inductor according to any one of claims 1-8.

10. A drone, characterized in that it comprises a power supply system according to claim 9.