CN114520544A - Wireless power transmission coupling mechanism with compatibility - Google Patents
Wireless power transmission coupling mechanism with compatibility Download PDFInfo
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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
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- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
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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
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
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Abstract
Description
技术领域technical field
本发明涉及无线电能传输领域,具体的是一种具有兼容性的无线电能传输耦合机构。The invention relates to the field of wireless power transmission, in particular to a compatible wireless power transmission coupling mechanism.
背景技术Background technique
相较于传统的充电方式,无线电能传输技术具有安全、灵活的特点,在电动汽车、消费电子、智能家居、医疗等方面有广泛的发展潜力。磁耦合谐振式无线电能传输技术是利用无线电能传输的发射端将高频交变电场转换为高频交变磁场,通过接受端耦合将能量传递至负载,作为能量中转站的耦合机构在无线电能传输系统中起着至关重要的作用。而如何兼容不同线圈类型成为磁耦合器的设计要求之一。Compared with traditional charging methods, wireless power transmission technology has the characteristics of safety and flexibility, and has broad development potential in electric vehicles, consumer electronics, smart homes, medical care, etc. The magnetic coupling resonance wireless power transmission technology uses the transmitting end of the wireless power transmission to convert the high-frequency alternating electric field into a high-frequency alternating magnetic field, and transfers the energy to the load through the coupling of the receiving end. plays a vital role in the transmission system. And how to be compatible with different coil types becomes one of the design requirements of the magnetic coupler.
此外,对于无线电能传输系统常用的耦合机构包括扁平螺线管型、平面螺旋型、空间螺旋形线圈,其中扁平螺线管型耦合机构的优点是结构紧凑,重量轻,横向抗偏移性强,而平面螺旋型及空间螺旋型耦合机构的具有低漏磁场的优点,但是扁平螺线管型线圈与平面螺旋型线圈和空间螺旋型线圈作为接收线圈时对耦合磁场的方向有不同要求,对于扁平螺线管线圈需要耦合平行于发射端平面的磁场,而平面螺旋型线圈和空间螺旋型线圈需要耦合垂直于发射端平面的磁场。传统的无线电能传输发射端只能产生其中一种方向的磁场,不能兼顾扁平螺线管型接收端平面螺旋型接收端以及空间螺旋型接收端。In addition, the commonly used coupling mechanisms for wireless power transmission systems include flat solenoid type, plane helical type, and space helical coil. The advantages of the flat solenoid type coupling mechanism are compact structure, light weight, and strong lateral offset resistance. , and the planar helical and space helical coupling mechanisms have the advantage of low leakage magnetic field, but the flat solenoid coil, the planar helical coil and the space helical coil have different requirements for the direction of the coupled magnetic field when they are used as receiving coils. Flat solenoid coils need to couple a magnetic field parallel to the plane of the transmitter, while planar helical coils and space helical coils need to couple a magnetic field perpendicular to the plane of the transmitter. The traditional wireless power transmission transmitter can only generate a magnetic field in one of the directions, and cannot take into account the flat solenoid receiver, the plane helix receiver, and the space helix receiver.
发明内容SUMMARY OF THE INVENTION
为解决上述背景技术中提到的不足,本发明的目的在于提供一种具有兼容性的无线电能传输耦合机构。In order to solve the deficiencies mentioned in the above background art, the purpose of the present invention is to provide a wireless power transmission coupling mechanism with compatibility.
本发明的目的可以通过以下技术方案实现:The object of the present invention can be realized through the following technical solutions:
一种具有兼容性的无线电能传输耦合机构,所述耦合机构包括发射端和接收端,发射端和接收端电性连接,所述发射端包括发射线圈和发射端磁芯,发射线圈绕制在发射端磁芯上;A compatible wireless power transmission coupling mechanism, the coupling mechanism includes a transmitting end and a receiving end, the transmitting end and the receiving end are electrically connected, the transmitting end includes a transmitting coil and a transmitting end magnetic core, and the transmitting coil is wound around the On the magnetic core of the transmitting end;
所述接收端包括接收端平面螺旋线圈、接收端空间螺旋线圈、接收端扁平螺线管型线圈和接收端磁芯,接收端平面螺旋线圈、接收端空间螺旋线圈、接收端扁平螺线管型线圈均设置在磁场接收侧,接收端扁平螺线管型线圈缠绕在接收端磁芯上。The receiving end includes a receiving end plane spiral coil, a receiving end space helical coil, a receiving end flat solenoid type coil and a receiving end magnetic core, the receiving end plane helical coil, the receiving end space helical coil, and the receiving end flat solenoid type coil. The coils are all arranged on the magnetic field receiving side, and the flat solenoid coil at the receiving end is wound on the magnetic core at the receiving end.
进一步地,所述发射线圈包括第一线圈、第二线圈、第三线圈、第四线圈;发射端磁芯包括第一磁芯块、第二磁芯块、第三磁芯块、第四磁芯块;第一线圈绕制在第一磁芯块上形成第一段螺线管型线圈发射端,第二线圈绕制在第二磁芯块上形成第二段螺线管型发射端,第三线圈绕制在第三磁芯块上形成第三段螺线管型发射端,第四线圈绕制在第四磁芯块上形成第四段螺线管型发射端。Further, the transmitting coil includes a first coil, a second coil, a third coil, and a fourth coil; the transmitting-end magnetic core includes a first magnetic core block, a second magnetic core block, a third magnetic core block, and a fourth magnetic core block. Core block; the first coil is wound on the first magnetic core block to form a first section of the solenoid type coil transmitting end, the second coil is wound on the second magnetic core block to form a second section of the solenoid type transmitting end, The third coil is wound on the third magnetic core block to form a third section of the solenoid-type transmitting end, and the fourth coil is wound on the fourth magnetic core block to form the fourth section of the solenoid-type transmitting end.
进一步地,所述第一线圈、第二线圈、第三线圈、第四线圈的尺寸相同,均为长方形螺线管型线圈;第一线圈、第二线圈、第三线圈、第四线圈由相同利兹线绕制而成;第一线圈、第二线圈、第三线圈、第四线圈按照逆时针方向排列,相邻线圈间夹角为90度且紧密排列。Further, the first coil, the second coil, the third coil, and the fourth coil have the same size, and they are all rectangular solenoid coils; the first coil, the second coil, the third coil, and the fourth coil are made of the same The Litz wire is wound; the first coil, the second coil, the third coil, and the fourth coil are arranged in a counterclockwise direction, and the angle between adjacent coils is 90 degrees and closely arranged.
进一步地,所述第一磁芯块、第二磁芯块、第三磁芯块、第四磁芯块的高度相同、形状和大小也相同;第一磁芯块、第二磁芯块、第三磁芯块、第四磁芯块为长方体铁氧体条,长度为0.2~0.4L,其中L为发射端的总长度。Further, the first magnetic core block, the second magnetic core block, the third magnetic core block, and the fourth magnetic core block have the same height, shape and size; the first magnetic core block, the second magnetic core block, The third magnetic core block and the fourth magnetic core block are cuboid ferrite strips with a length of 0.2-0.4L, where L is the total length of the transmitting end.
本发明的有益效果:Beneficial effects of the present invention:
本发明通过将发射线圈分为四部分并在线圈中间添加磁芯,并按照不同方式连接可产生垂直于发射端的磁场或者平行于发射端的磁场,适用于多种接收端线圈类型,提高无线电能传输系统兼容性。The invention can generate a magnetic field perpendicular to the transmitting end or a magnetic field parallel to the transmitting end by dividing the transmitting coil into four parts, adding a magnetic core in the middle of the coil, and connecting them in different ways. System compatibility.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图;In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. In other words, on the premise of no creative work, other drawings can also be obtained from these drawings;
图1是本发明耦合机构发射端示意图;Fig. 1 is the schematic diagram of the transmitting end of the coupling mechanism of the present invention;
图2是本发明耦合机构发射端及扁平螺线管型接收端示意图;Fig. 2 is the schematic diagram of the transmitting end and the flat solenoid type receiving end of the coupling mechanism of the present invention;
图3是本发明耦合机构发射端及平面螺旋线圈接收端示意图;3 is a schematic diagram of the transmitting end of the coupling mechanism and the receiving end of the plane spiral coil of the present invention;
图4是本发明耦合机构发射端及空间螺旋线圈接收端示意图;4 is a schematic diagram of the transmitting end of the coupling mechanism and the receiving end of the space helical coil according to the present invention;
图5是本发明实施例适用于平面螺旋型及空间螺旋型接收端的发射端连接示意图;FIG. 5 is a schematic diagram of the connection of a transmitting end suitable for a plane spiral type and a space spiral type receiving end according to an embodiment of the present invention;
图6是本发明实施例适用于扁平螺线管型接收端的发射端连接示意图;FIG. 6 is a schematic diagram of the connection of a transmitting end suitable for a flat solenoid type receiving end according to an embodiment of the present invention;
图7是本发明实施例产生的适用于平面螺线型接收线圈的空间磁力线分布示意图;7 is a schematic diagram of the spatial magnetic field line distribution suitable for a planar helical receiving coil generated by an embodiment of the present invention;
图8是本发明实施例产生的适用于空间螺旋型接收线圈的空间磁力线分布示意图;8 is a schematic diagram of the distribution of magnetic field lines in space suitable for a space helical receiving coil generated by an embodiment of the present invention;
图9是本发明实施例产生的适用于扁平螺线管型接收线圈的空间磁力线分布示意图;9 is a schematic diagram of the spatial magnetic field line distribution suitable for a flat solenoid type receiving coil generated by an embodiment of the present invention;
其中,附图标记说明如下:Among them, the reference numerals are described as follows:
1a、第一线圈;1b、第二线圈;1c、第三线圈;1d、第四线圈;2a、发射端第一磁芯块;2b、发射端第二磁芯块;2c、发射端第三磁芯块;2d、发射端第四磁芯块;5、接收端平面螺旋线圈;6、接收端空间螺旋线圈;7、接收端扁平螺线管型线圈;71、接收端磁芯。1a, the first coil; 1b, the second coil; 1c, the third coil; 1d, the fourth coil; 2a, the first magnetic core block of the transmitting end; 2b, the second magnetic core block of the transmitting end; 2c, the third magnetic core block of the transmitting end Magnetic core block; 2d, the fourth magnetic core block at the transmitting end; 5, the plane spiral coil at the receiving end; 6, the space spiral coil at the receiving end; 7, the flat solenoid type coil at the receiving end; 71, the magnetic core at the receiving end.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例,都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
一种具有兼容性的无线电能传输耦合机构,如图1-4所示,耦合机构包括发射端和接收端,发射端和接收端电性连接。A compatible wireless power transmission coupling mechanism, as shown in Figure 1-4, the coupling mechanism includes a transmitter and a receiver, and the transmitter and receiver are electrically connected.
发射端包括发射线圈和发射端磁芯,发射线圈绕制在发射端磁芯上。其中,发射线圈包括第一线圈1a、第二线圈1b、第三线圈1c、第四线圈1d;发射端磁芯包括第一磁芯块2a、第二磁芯块2b、第三磁芯块2c、第四磁芯块2d;第一线圈1a绕制在第一磁芯块2a上形成第一段螺线管型线圈发射端,第二线圈1b绕制在第二磁芯块2b上形成第二段螺线管型发射端,第三线圈1c绕制在第三磁芯块2c上形成第三段螺线管型发射端,第四线圈1d绕制在第四磁芯块2d上形成第四段螺线管型发射端。The transmitting end includes a transmitting coil and a transmitting end magnetic core, and the transmitting coil is wound on the transmitting end magnetic core. The transmitting coil includes a first coil 1a, a
改变发射线圈间的连接方式,可以适用于不同类型的接收线圈,同时,将四段发射端次按照向内激发磁场的方向串联连接,适用于平面螺旋型或空间螺旋型接收线圈;将相隔180度的两段发射端按照激发同方向磁场的端口串联连接,适用于螺线管型接收线圈。Changing the connection method between the transmitting coils can be applied to different types of receiving coils. At the same time, the four-segment transmitting ends are connected in series according to the direction of the inward excitation magnetic field, which is suitable for plane spiral or space spiral receiving coils; The two-stage transmitter ends are connected in series according to the ports that excite the magnetic field in the same direction, which is suitable for solenoid-type receiving coils.
其中,第一线圈1a、第二线圈1b、第三线圈1c、第四线圈1d的尺寸相同,均为长方形螺线管型线圈;第一线圈1a、第二线圈1b、第三线圈1c、第四线圈1d由相同利兹线绕制而成;第一线圈1a、第二线圈1b、第三线圈1c、第四线圈1d按照逆时针方向排列,相邻线圈间夹角为90度且紧密排列。Among them, the first coil 1a, the
其中,第一磁芯块2a、第二磁芯块2b、第三磁芯块2c、第四磁芯块2d的高度相同、形状和大小也相同;第一磁芯块2a、第二磁芯块2b、第三磁芯块2c、第四磁芯块2d为长方体铁氧体条,长度为0.2~0.4L,其中L为发射端的总长度。磁芯块的长度是一种非限制性的较优选择,可以根据实际情况设计磁芯块的长度。发射端磁芯的形状包括长方体,形状没有严格限制。Among them, the first
接收端包括接收端平面螺旋线圈5、接收端空间螺旋线圈6、接收端扁平螺线管型线圈7和接收端磁芯71,接收端平面螺旋线圈5、接收端空间螺旋线圈6、接收端扁平螺线管型线圈7均设置在磁场接收侧,接收端扁平螺线管型线圈7缠绕在接收端磁芯71上。The receiving end includes the receiving end plane helical coil 5, the receiving end space helical coil 6, the receiving end flat solenoid coil 7 and the receiving end magnetic core 71, the receiving end plane helical coil 5, the receiving end space helical coil 6, the receiving end flat The solenoid coils 7 are all disposed on the magnetic field receiving side, and the flat solenoid coil 7 at the receiving end is wound on the magnetic core 71 at the receiving end.
基于上述分析,为了产生一个垂直发射端平面向上的磁场,用以匹配平面螺旋或空间螺旋式的接收线圈,如图5所示,将四段发射线圈按照电流从A`口流入,然后经过A→B`,B→C`,C→D`的方式将发射线圈连接,如图7和图8所示为发射线圈按照上述连接方式连接后产生的磁力线分布图,由图可知在发射线圈上方产生了能够与平面螺旋线圈或空间螺旋线圈耦合的垂直磁场。Based on the above analysis, in order to generate a magnetic field perpendicular to the plane of the transmitting end to match the plane spiral or space spiral receiving coil, as shown in Fig. Connect the transmitting coil in the way of →B`, B→C`, C→D`. As shown in Figure 7 and Figure 8, the distribution diagram of the magnetic lines of force generated after the transmitting coil is connected according to the above connection method, it can be seen from the figure that above the transmitting coil A vertical magnetic field is generated that can be coupled with a planar helical coil or a space helical coil.
而对于扁平螺线管型接收线圈则需要一个平行于发射端的磁场与之耦合,如图6所示将发射线圈按照电流从A`流入,A→C`,B及B`,D及D`空接,则会在发射端上方产生一个平行磁通的磁场如图9所示。For the flat solenoid type receiving coil, a magnetic field parallel to the transmitting end is required to couple with it. As shown in Figure 6, the transmitting coil flows in from A` according to the current, A→C`, B and B`, D and D` If the connection is empty, a magnetic field with parallel magnetic flux will be generated above the transmitting end, as shown in Figure 9.
与现有技术相比,通过将发射线圈分为四部分并在线圈中间添加磁芯,并按照不同方式连接可产生垂直于发射端的磁场或者平行于发射端的磁场,适用于多种接收端线圈类型,提高无线电能传输系统兼容性。Compared with the existing technology, by dividing the transmitting coil into four parts and adding a magnetic core in the middle of the coil, and connecting them in different ways, a magnetic field perpendicular to the transmitting end or a magnetic field parallel to the transmitting end can be generated, which is suitable for a variety of receiving end coil types , to improve the compatibility of wireless power transfer system.
以上显示和描述了本发明的基本原理、主要特征和本发明的优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Various changes and modifications fall within the scope of the claimed invention.
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