Ultrasonic wireless electric energy transmission device

Abstract

The utility model discloses an ultrasonic wireless electric energy transmission device which comprises a wireless transmitting module and a wireless receiving module. The wireless receiving module comprises a secondary side support, a secondary side magnetic core and a secondary side coil, the secondary side support is of an annular cylinder structure, and the secondary side magnetic core and the secondary side coil are fixed to the outer wall of the secondary side support in a sleeving mode; the wireless transmitting module comprises a primary side support, a primary side magnetic core and a primary side coil, the primary side support and the primary side magnetic core are of a fan-shaped structure, the primary side magnetic core is fixedly connected into the primary side support, the section of the primary side magnetic core is of a first C-shaped structure, at least one side of the first C-shaped structure is inclined to the axis of the secondary side support, and the primary side coil is wound on the primary side magnetic core; an air gap is arranged between the wireless transmitting module and the wireless receiving module, and a magnetic flux loop is formed between the secondary side magnetic core and the primary side magnetic core. The ultrasonic wireless electric energy transmission device disclosed by the utility model can improve the application of a wireless transmission system in a complex environment and the stability of high-power transmission.

Description

TECHNICAL FIELD

[0001] The utility model relates to ultrasonic wireless power transmission technical field especially relates to an ultrasonic wireless power transmission device. BACKGROUND

[0002] Wireless power transmission technology, also known as non-contact power transmission technology, is mainly based on electromagnetic induction phenomenon, and the magnetic field generated by the current flowing in the coil induces electromotive force in another coil, which can realize wireless transmission of electric energy. In the wireless power transmission system, the magnetic field generated by the transmitting coil is transmitted to the receiving coil through the magnetic core. The high permeability of the magnetic core makes the magnetic force of the magnetic field more concentrated in the interior of the magnetic core, which plays a concentrating and guiding role for the magnetic field, reduces the magnetic leakage phenomenon, and thus improves the transmission efficiency and the stability of the system.

[0003] In the current wireless power transmission system, the selection of the magnetic core and the winding method directly affect the transmission efficiency and stability. Although the traditional magnetic core structure, such as E type, EE type, etc., meets the demand of wireless transmission to some extent, there are limitations in the traditional magnetic core structure and winding method. Especially in the case of high power transmission or compact design, the traditional magnetic core structure often appears to be inadequate.

[0004] The disclosure of the above background art content is only used to assist in understanding the concept and technical scheme of the utility model, and it does not necessarily belong to the prior art of the present patent application. In the absence of explicit evidence that the above content has been disclosed on the filing date of the present patent application, the above background technology should not be used to evaluate the novelty and inventiveness of the present application. CONTENT OF THE UTILITY MODEL

[0005] To solve the above technical problems, the utility model provides an ultrasonic wireless power transmission device, which can improve the stability of wireless transmission system in complex environment and high power transmission.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The utility model discloses an ultrasonic wireless electric energy transmission device, including wireless transmitting module and wireless receiving module, wherein, wireless receiving module includes vice side support, vice side magnetic core and vice side coil, vice side support is circular ring cylinder structure, and vice side magnetic core and vice side coil are fixed in the outer wall department of vice side support respectively, wireless transmitting module includes primary side support, primary side magnetic core and primary side coil, primary side support and primary side magnetic core are fan -shaped structure, primary side magnetic core fixed connection in primary side support, the section of primary side magnetic core is first C type structure, and at least one side of first C type structure is inclined to the axis of vice side support, wherein primary side coil is wound on primary side magnetic core, be equipped with air gap between wireless transmitting module and wireless receiving module, and the magnetic flux loop is formed between vice side magnetic core and primary side magnetic core.

[0008] Further, the primary side magnetic core includes a first magnetic core side, a second magnetic core side, and a third magnetic core side, the first magnetic core side, the second magnetic core side, and the third magnetic core side are sequentially connected to each other to form the first C-shaped structure, wherein the second magnetic core side is perpendicular to the first magnetic core side and the second magnetic core side, respectively.

[0009] Further, the first magnetic core side, the second magnetic core side, and the third magnetic core side are inclined to the axis of the vice side support, respectively.

[0010] Further, the primary side coil is wound on the first magnetic core side, the second magnetic core side, or the third magnetic core side.

[0011] Further, when the primary side coil is wound on the first magnetic core side or the third magnetic core side, the winding direction of the primary side coil is parallel to the axis of the vice side support.

[0012] Further, when the primary side coil is wound on the second magnetic core side, the winding direction of the primary side coil is perpendicular to the length direction of the second magnetic core side.

[0013] Further, the wireless receiving module further includes a first encapsulating member, and the wireless transmitting module further includes a second encapsulating member, the vice side magnetic core and the vice side coil are encapsulated and fixed on the vice side support through the first encapsulating member, the primary side magnetic core and the primary side coil are encapsulated and fixed on the primary side support through the second encapsulating member, wherein the first encapsulating member and the second encapsulating member are made of epoxy resin, respectively.

[0014] Further, the secondary side magnetic core is in a ring structure, and a cross section of the secondary side magnetic core is in a second C-shaped structure, wherein two side edges of the second C-shaped structure are perpendicular to an axis of the secondary side support, a connecting edge between the two side edges of the second C-shaped structure is parallel to the axis of the secondary side support, the secondary side coil is wound in a groove of the second C-shaped structure, and the secondary side magnetic core and the secondary side coil are respectively fixed on an outer wall of the secondary side support in a sleeved manner.

[0015] Further, the secondary side magnetic core comprises a first sub-secondary side magnetic core, a second sub-secondary side magnetic core and a third sub-secondary side magnetic core, the first sub-secondary side magnetic core, the second sub-secondary side magnetic core and the third sub-secondary side magnetic core are respectively in a ring structure, the secondary side coil is a pre-wound ring coil, the third sub-secondary side magnetic core is fixed on an outer wall of the secondary side support in a sleeved manner, and the first sub-secondary side magnetic core, the secondary side coil and the second sub-secondary side magnetic core are fixed on an outer wall of the third sub-secondary side magnetic core in a sleeved manner.

[0016] Further, the wireless receiving module further comprises a pressing block, the pressing block is in a ring structure, a stepped surface is arranged at a first end of the secondary side support, the secondary side magnetic core and the secondary side coil are respectively fixed on an outer wall of the secondary side support in a sleeved manner, and the pressing block is fixed on an outer wall of a second end of the secondary side support in a sleeved manner to abut the secondary side magnetic core and the secondary side coil between the stepped surface and the pressing block.

[0017] Compared with the prior art, the ultrasonic wireless electric energy transmission device disclosed in the preferred embodiment of the utility model has an obliquely arranged C-shaped primary side magnetic core and a ring-shaped secondary side magnetic core, thereby guaranteeing the wireless transmission efficiency and improving the stability of application in complex environments and high-power transmission.

[0018] In further schemes, three unique primary side winding methods can be implemented to adapt to different use scenarios, thereby guaranteeing the wireless transmission efficiency and improving the flexible application of the wireless electric energy transmission device in complex environments. ACCURACY OF DRAWINGS

[0019] Figure 1 is a top view of the ultrasonic wireless electric energy transmission device disclosed in the preferred embodiment of the utility model;

[0020] Figure 2 is Figure 1 is a sectional view of A-A in the figure;

[0021] Figure 3 is Figure 2 is a structural schematic view of a wireless transmitting module of the ultrasonic wireless electric energy transmission device;

[0022] Figures 4a to 4cFig. 1 is a schematic view of three winding modes of the primary coil winding on the primary magnetic core.

[0023] BRIEF DESCRIPTION OF DRAWINGS

[0024] 10, wireless receiving module; 11, secondary support; 111, stepped surface; 12, secondary magnetic core; 121, first sub-secondary magnetic core; 122, second sub-secondary magnetic core; 123, third sub-secondary magnetic core; 13, secondary coil; 14, first encapsulating member; 15, pressing block;

[0025] 20, wireless transmitting module; 21, primary support; 22, primary magnetic core; 221, first magnetic core side; 222, second magnetic core side; 223, third magnetic core side; 23, primary coil; 24, second encapsulating member;

[0026] 30, air gap; 40, magnetic flux loop; 50, ultrasonic controller. DETAILED DESCRIPTION

[0027] The following detailed description of the embodiments of the present application will be made with reference to the accompanying drawings. It should be emphasized that the following description is only exemplary and is not intended to limit the scope of the present application and its applications.

[0028] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, the connection can be for fixing or for circuit / signal communication.

[0029] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0030] In addition, the terms "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0031] As Figure 1 and Figure 2The utility model discloses an ultrasonic wireless power transmission device, including wireless receiving module 10 and wireless transmitting module 20, wherein wireless receiving module 10 includes vice side support 11, vice side magnetic core 12 and vice side coil 13, vice side support 11 is circular ring column body structure, and vice side magnetic core 12 and vice side coil 13 are fixedly covered in the outer wall place of vice side support 11 respectively, wireless transmitting module 20 includes original side support 21, original side magnetic core 22 and original side coil 23, and original side support 21 and original side magnetic core 22 are fan-shaped structure, and original side magnetic core 22 is fixedly connected in original side support 21, and the section of original side magnetic core 22 is first C type structure, and at least one side of first C type structure is inclined to the axis of vice side support 11, wherein original side coil 23 is wound on original side magnetic core 22, and the air gap 30 is arranged between wireless receiving module 10 and wireless transmitting module 20, and wireless receiving module 10 and wireless transmitting module 20 are concentric, to make vice side magnetic core 12 and original side magnetic core 22 form the magnetic flux loop 40 between each other. Figure 3 The original side coil 22 can be connected to an ultrasonic controller 50, and the vice side coil 13 is connected to a load or a transducer. Based on the magnetic flux loop 40 formed between the vice side magnetic core 12 and the original side magnetic core 22, the magnetic flux generated by the original side coil 22 passes through the coupling magnetic circuit to generate an induced electromotive force in the vice side coil 12. Thus, an ultrasonic wireless power transmission system is formed.

[0032] The wireless transmitting module 20 further includes a second packaging member 24, and the original side magnetic core 22 and the original side coil 23 are packaged and fixed on the original side support 21 by the second packaging member 24. The second packaging member 24 is made of epoxy resin. That is, the original side magnetic core 22 and the original side coil 23 can be packaged and fixed in the original side support 21 by the epoxy resin. Specifically, the epoxy resin is heated and vacuumized to eliminate the air bubbles inside the epoxy resin, so as to avoid the generation of cavities that affect the sealing performance and strength of the wireless transmitting module 20, and to tightly connect the original side support 21, the original side magnetic core 22 and the original side coil 23 in the wireless transmitting module 20.

[0033] For example, the first magnetic core edge 221, the second magnetic core edge 222 and the third magnetic core edge 223 are respectively inclined to the axis of the vice side support 11. Figure 3 The original side magnetic core 22 includes a first magnetic core edge 221, a second magnetic core edge 222 and a third magnetic core edge 223, which are sequentially connected to each other to form a first C-shaped structure. The second magnetic core edge 222 is perpendicular to the first magnetic core edge 221 and the third magnetic core edge 223, respectively. In this embodiment, the first magnetic core edge 221, the second magnetic core edge 222 and the third magnetic core edge 223 are respectively inclined to the axis of the vice side support 11. For example, the first magnetic core edge 221, the second magnetic core edge 222 and the third magnetic core edge 223 respectively form an angle of 10°-80° with the axis of the vice side support 11.

[0034] For example, the first magnetic core edge 221, the second magnetic core edge 222 and the third magnetic core edge 223 are respectively inclined to the axis of the vice side support 11. Figure 4aThe primary coil 23 is wound on the first magnetic core side 221, as shown in Fig. 2a. Figure 4b The primary coil 23 is wound on the second magnetic core side 222, as shown in Fig. 2b. Figure 4c The primary coil 23 is wound on the third magnetic core side 223. When the primary coil 23 is wound on the first magnetic core side 221 or the third magnetic core side 223, the winding direction of the primary coil 23 is parallel to the axis of the secondary support 11; when the primary coil 23 is wound on the second magnetic core side 222, the winding direction of the primary coil 23 is perpendicular to the length direction of the second magnetic core side 222. Correspondingly, the primary support 21 can adjust the structure of the groove where the primary magnetic core 22 and the primary coil 23 are placed and installed according to the three different winding methods, and three different ultrasonic emission modules 20 are formed by the three different winding methods. The application of the ultrasonic wireless power transmission device in different complex environments is realized, and the purpose of maintaining high-power stable transmission is achieved. In actual application, if the position in a certain direction is limited, the ultrasonic emission module can be flexibly selected for application.

[0035] The secondary magnetic core 12 has a ring structure, and the cross section of the secondary magnetic core 12 has a second C-shaped structure. The two side edges of the second C-shaped structure are perpendicular to the axis of the secondary support 11, and the connecting edge between the two side edges of the second C-shaped structure is parallel to the axis of the secondary support 11. The secondary coil 13 is wound in the groove of the second C-shaped structure, and the secondary magnetic core 12 and the secondary coil 13 are respectively fitted and fixed on the outer wall of the secondary support 11.

[0036] The secondary magnetic core 12 includes a first sub-secondary magnetic core 121, a second sub-secondary magnetic core 122, and a third sub-secondary magnetic core 123. The first sub-secondary magnetic core 121, the second sub-secondary magnetic core 122, and the third sub-secondary magnetic core 123 each have a ring structure. The secondary coil 13 is a pre-wound ring coil. The third sub-secondary magnetic core 123 is fitted and fixed on the outer wall of the secondary support 11. The first sub-secondary magnetic core 121, the secondary coil 13, and the second sub-secondary magnetic core 122 are sequentially fitted and fixed on the outer wall of the third sub-secondary magnetic core 123.

[0037] The wireless receiving module 10 further includes a first packaging member 14. The secondary magnetic core 12 and the secondary coil 13 are packaged and fixed on the secondary support 11 by the first packaging member 14. The first packaging member 14 is made of epoxy resin.

[0038] The wireless receiving module 10 further comprises a pressing block 15, the pressing block 15 is annular, a stepped surface 111 is arranged at the first end of the secondary side support 11, the secondary side magnetic core 12 and the secondary side coil 13 are respectively sleeved on the outer wall of the secondary side support 11, and the pressing block 15 is sleeved and fixed at the outer wall of the second end of the secondary side support 11 so that the secondary side magnetic core 12 and the secondary side coil 13 are abutted between the stepped surface 111 and the pressing block 15; that is, the first end of the third sub-secondary side magnetic core 123 and the first end of the first sub-secondary side magnetic core 121 are abutted at the stepped surface 111, the second end of the third sub-secondary side magnetic core 123 and the second end of the second sub-secondary side magnetic core 122 are abutted at the pressing block 15, in the assembling process, the third sub-secondary side magnetic core 123, the first sub-secondary side magnetic core 121, the secondary side coil 13, the second sub-secondary side magnetic core 122 and the pressing block 15 are sequentially assembled on the secondary side support 11, wherein the pressing block 15 and the secondary side support 11 are connected through threads, and the third sub-secondary side magnetic core 123, the first sub-secondary side magnetic core 121, the secondary side coil 13 and the second sub-secondary side magnetic core 122 are encapsulated and fixed on the secondary side support 11 through epoxy resin.

[0039] Wherein, the secondary side magnetic core 12 and the primary side magnetic core 22 are made of high magnetic conductive material, the secondary side support 11 and the primary side support 21 are made of non-magnetic or low magnetic conductive material, and suitable material selection can well reduce the loss of wireless transmission energy and effectively improve the transmission efficiency of ultrasonic energy, thereby ensuring the efficient transmission of wireless electric energy.

[0040] The ultrasonic wireless electric energy transmission device disclosed by the preferred embodiment of the utility model, wherein including oblique C type primary side magnetic core and annular secondary side magnetic core, guarantee the wireless transmission efficiency, improve the stability of high power transmission in complex environment. Further, three unique primary side winding methods can be realized to adapt to different use scenarios, guarantee the wireless transmission efficiency, and improve the flexible application of the wireless electric energy transmission device in complex environments. In addition, impedance matching can also be realized according to the requirements of different loads on the output characteristics of the system, so as to meet the output performance.

[0041] The background part of the utility model can contain the background information about the problems or environment of the utility model, instead of the prior art described by others. Therefore, the content contained in the background art part is not the admission of the prior art by the applicant.

[0042] The above is further detailed description of the utility model in combination with specific / preferred embodiments, and cannot be deemed as limitation of the specific implementation of the utility model to these descriptions. For ordinary skilled in the art to which the utility model belongs, without departing from the concept of the utility model, it can make several substitutions or variations to the described embodiments, and these substitution or variation manners should be deemed as belonging to the protection scope of the utility model. In the description of the specification, the description of the reference terms "an embodiment", "some embodiments", "preferred embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. Furthermore, the skilled in the art can combine and combine the different embodiments or examples and the features of different embodiments or examples described in the specification without mutual contradiction. Although the embodiments of the utility model and its advantages have been described in detail, it should be understood that various changes, substitutions and modifications can be made in this paper without departing from the scope defined by the appended claims.

Claims

1. An ultrasonic wireless power transfer device, characterized by, The wireless transmitting module and the wireless receiving module are included. The wireless receiving module includes a secondary side support, a secondary side magnetic core and a secondary side coil, the secondary side support is in a circular column structure, and the secondary side magnetic core and the secondary side coil are fixedly sleeved on the outer wall of the secondary side support. The wireless transmitting module includes a primary side support, a primary side magnetic core and a primary side coil, the primary side support and the primary side magnetic core are in a fan-shaped structure, the primary side magnetic core is fixedly connected in the primary side support, the cross section of the primary side magnetic core is in a first C-shaped structure, and at least one side of the first C-shaped structure is inclined to the axis of the secondary side support, and the primary side coil is wound on the primary side magnetic core. The wireless transmitting module and the wireless receiving module are provided with an air gap, and a magnetic flux loop is formed between the secondary side magnetic core and the primary side magnetic core.

2. The ultrasonic wireless power transfer device of claim 1, wherein, The primary side magnetic core includes a first magnetic core side, a second magnetic core side and a third magnetic core side, the first magnetic core side, the second magnetic core side and the third magnetic core side are sequentially connected to form the first C-shaped structure, and the second magnetic core side is perpendicular to the first magnetic core side and the second magnetic core side.

3. The ultrasonic wireless power transfer device of claim 2, wherein, The first magnetic core side, the second magnetic core side and the third magnetic core side are respectively inclined to the axis of the secondary side support.

4. The ultrasonic wireless power transfer device of claim 2, wherein, The primary side coil is wound on the first magnetic core side, the second magnetic core side or the third magnetic core side.

5. The ultrasonic wireless power transfer device of claim 4, wherein, When the primary side coil is wound on the first magnetic core side or the third magnetic core side, the winding direction of the primary side coil is parallel to the axis of the secondary side support.

6. The ultrasonic wireless power transfer device of claim 4, wherein, When the primary side coil is wound on the second magnetic core side, the winding direction of the primary side coil is perpendicular to the length direction of the second magnetic core side.

7. The ultrasonic wireless power transfer device of claim 1, wherein, The wireless receiving module further includes a first encapsulating member, the wireless transmitting module further includes a second encapsulating member, the secondary side magnetic core and the secondary side coil are encapsulated and fixed on the secondary side support through the first encapsulating member, the primary side magnetic core and the primary side coil are encapsulated and fixed on the primary side support through the second encapsulating member, and the first encapsulating member and the second encapsulating member are respectively made of epoxy resin.

8. The ultrasonic wireless power transfer device of claim 1, wherein, The secondary side magnetic core is in a ring structure, and the cross section of the secondary side magnetic core is in a second C-shaped structure, two side edges of the second C-shaped structure are perpendicular to the axis of the secondary side support, a connecting edge between the two side edges of the second C-shaped structure is parallel to the axis of the secondary side support, the secondary side coil is wound in a groove of the second C-shaped structure, and the secondary side magnetic core and the secondary side coil are fixedly sleeved on the outer wall of the secondary side support.

9. The ultrasonic wireless power transfer device of claim 8, wherein, The secondary side magnetic core includes a first sub-secondary side magnetic core, a second sub-secondary side magnetic core and a third sub-secondary side magnetic core, the first sub-secondary side magnetic core, the second sub-secondary side magnetic core and the third sub-secondary side magnetic core are respectively in a ring structure, the secondary side coil is a pre-wound ring coil, the third sub-secondary side magnetic core is fixedly sleeved on the outer wall of the secondary side support, and the first sub-secondary side magnetic core, the secondary side coil and the second sub-secondary side magnetic core are fixedly sleeved on the outer wall of the third sub-secondary side magnetic core in sequence.

10. The ultrasonic wireless power transfer device of claim 1, wherein, The wireless receiving module further comprises a pressing block, the pressing block has a ring structure, a stepped surface is arranged at a first end of the secondary side support, the secondary side magnetic core and the secondary side coil are respectively sleeved on the outer wall of the secondary side support, and the pressing block is sleeved and fixed on the outer wall of the second end of the secondary side support to abut the secondary side magnetic core and the secondary side coil between the stepped surface and the pressing block.

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