WO2020169033A1

WO2020169033A1 - Wireless charging transmission device having snap ring structure

Info

Publication number: WO2020169033A1
Application number: PCT/CN2020/075761
Authority: WO
Inventors: 邢益涛
Original assignee: 邢益涛
Priority date: 2019-02-18
Filing date: 2020-02-18
Publication date: 2020-08-27
Also published as: CN209434964U

Abstract

Provided is a wireless charging transmission device having a snap ring structure; a snap ring (5) is arranged on the side of a transmission coil (4) which can achieve a wireless charging function toward an object to be charged; the clamping faces of the transmission coil (4) and the snap ring (5) are parallel to each other, and the snap ring (5) has an opening; the snap ring (5) has an arc-shaped snap ring structure. the wireless charging transmitter having a snap ring structure can combine wireless charging with existing auxiliary fixed products, and, at the same time, the energy emission of the transmission coil (4) is stably concentrated in the same direction so as to charge a carrier by means of a stable-level eddy current damper (3) and a magnetic flux guide body (6).

Description

Wireless charging transmitter with clasp structure

Technical field

The utility model belongs to the technical field of wireless charging, and particularly relates to a wireless charging transmitting device with a snap ring structure.

Background technique

The technical realization of the wireless energy transmission device generally adopts the conversion of direct current into a higher frequency alternating current, which drives the wireless energy output coil and transmits alternating electromagnetic energy to the wireless charging input coil, and then converts the induced alternating current into direct current. As shown in the application numbers CN200510050239 and CN201110020352. However, between the wireless charging output and input coils, there can be no large-sized conductors, or the mutual inductance between the two coils is required to be high, otherwise it will cause wireless charging energy transmission failure, insufficient power, and eddy current heating.

Furthermore, CN103715781A, a new type of wireless charging and transmission device previously filed and disclosed by the present inventor, discloses a wireless charging and transmission device. The wireless charging and transmitting circuit module and the transmitting coil module are connected through the high-frequency AC transmission line. Electrical connection, so as to realize that the wireless charging and transmitting circuit module transfers high-frequency AC energy to the transmitting coil module for transmission, so as to realize the transmission of wireless energy;

At the same time, there are a lot of wireless charging devices in the existing market, but there are problems in the process of wireless charging that it is difficult to fix, and there are many peripheral products of auxiliary wireless charging devices, among which there are auxiliary fixing products, such as popsocket and other bubbles. Ring, so there is a solution that can combine wireless charging with existing auxiliary fixed products.

Utility model content

In order to achieve the above object, the present invention provides a wireless charging transmitter device with a snap ring structure.

The specific technical scheme of the present invention is as follows: a wireless charging transmitter device with a clasp structure, a clasp is provided on the side of the transmitter coil that can realize the wireless charging function facing the object to be charged;

The clamping surfaces of the transmitting coil and the snap ring are parallel to each other, and the snap ring has an opening;

The snap ring has an arc-shaped snap ring structure.

Further, in the axial cross-sectional direction, the transmitting coil is placed inside the snap ring, or the outer diameter of the coil is the same as the outer diameter of the snap ring or the outer diameter of the transmitting coil It is larger than the outer diameter of the snap ring.

Further, the wireless charging transmitter device further includes a magnetic flux guide body;

When the transmitting coil is placed on the inner side of the snap ring, the magnetic flux guide body is arranged in the snap ring or on the inner side of the snap ring;

When the outer diameter of the coil is the same as the outer diameter of the snap ring, the magnetic flux guide is arranged in the snap ring, or arranged on the outside of the snap ring;

When the outer diameter of the transmitting coil is larger than the outer diameter of the snap ring, the magnetic flux guide is arranged on the outside of the snap ring, or arranged on the outside of the coil and extends from the outside of the coil in the direction of the snap ring form.

Further, the magnetic flux guide is made of ferrite soft magnetic material, amorphous soft magnetic material or nanocrystalline soft magnetic material.

Further, the side of the transmitting coil is fixed on the snap ring at any position.

Further, the wireless charging and transmitting device includes a power conversion module, a high-frequency power cable, a stable-level eddy current damper, a transmitting coil, and the retaining ring;

Both ends of the high-frequency power cable are respectively connected to the power conversion module and the transmitting coil, and the stable-level eddy current damper is arranged on the side of the transmitting coil opposite to the arc-shaped snap ring, and The stable level eddy current damper is close to the transmitting coil, the stable level eddy current damper is parallel to the transmitting coil, and the stable level eddy current damper passes through a high-frequency low-impedance set in a high-frequency power cable The conductor circuit is connected to the power conversion module.

Further, the arc-shaped snap ring structure is an integral structure.

Further, the arc-shaped snap ring structure includes a first part and a second part, and the first part and the second part are symmetrical and the same;

And the first part and the second part are hinged together.

Further, the arc-shaped snap ring structure includes a first part and a second part, and the first part has a first clamping part and a first pressing part;

The second part has a second clamping portion and a second pressing portion;

The first clamping part and the second clamping part are symmetrical and the same, and constitute a clamping structure, and the first part and the second part are hinged together;

The hinge point of the first part and the second part separates the first clamping part from the first pressing part, and simultaneously separates the second clamping part from the second pressing part.

Further, a return spring is provided at the hinged position of the first clamping part and the second clamping part.

Further, the clamping part of the snap ring structure extends inwardly from one side of the wireless charging side to form an extension.

Further, the two ends of the corresponding opening of the snap ring can be snap-connected through a mutually snap-connected structure.

Further, either end of the snap ring corresponding to the two ends of the opening is provided with a silica gel strip, and the other end has a structure capable of fixing the silica gel strip.

Further, both ends of the corresponding opening of the snap ring are provided with corresponding silicone strips, and the two silicone strips can be connected and fixed.

The beneficial effects of the utility model are: the utility model provides a scheme that can combine wireless charging with existing auxiliary fixed products, and at the same time, the energy of the transmitting coil can be emitted through a stable level eddy current damper and a magnetic flux guide. Charge the carrier in the same direction with stable concentration.

Description of the drawings

Figure 1 is a schematic structural diagram of the first embodiment provided by the utility model;

Figure 2 is a schematic structural diagram of a second embodiment provided by the utility model;

Figure 3 is a schematic structural diagram of a third embodiment provided by the utility model;

Figure 4 is a schematic structural diagram of a fourth embodiment provided by the utility model;

Fig. 5 is a schematic diagram of the structure of the fifth embodiment provided by the utility model.

detailed description

In order to explain the technical solutions of the embodiments of the present utility model more clearly, the following will briefly introduce the drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. It does not limit the scope of application of the utility model. For those of ordinary skill in the art, without creative work, the utility model can be applied to other similar scenarios based on these drawings;

As shown in this specification and claims, unless the context clearly indicates the exceptional circumstances, the words "a", "an", "an" and/or "the" do not specifically refer to the singular, but may also include the plural. Generally speaking, the term "comprising" or "comprising" only suggests that the clearly identified steps and elements are included, and these steps and elements do not constitute an exclusive list, and the method or device may also include other steps or elements. The term "based on" is "based at least in part on." The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment."

As shown in FIG. 1, it is a schematic structural diagram of a first embodiment of a wireless charging and transmitting device with a snap ring structure provided by the present invention. The wireless charging and transmitting device includes a power conversion module 1, a high-frequency power cable 2. Stable level eddy current damper 3, transmitting coil 4, and snap ring 5, said snap ring 5 is an arc snap ring structure

Both ends of the high-frequency power cable 2 are respectively connected to the power conversion module 1 and the transmitting coil 4, and the retaining ring 5 is provided on one side of the transmitting coil 4, and the other of the transmitting coil 4 The stable-level eddy current damper 3 is provided on the side, the stable-level eddy current damper 3 and the transmitting coil 4 are in close contact with each other, and the retaining ring 5 and the stable-level eddy current damper 3 are The axial cross-sections of the transmitting coil 4 are parallel to each other. It can also be understood that the plane where the snap ring 5 is located, the plane where the transmitting coil 4 is located, and the plane where the stable level eddy current damper 3 is located are all mutually. parallel;

At the same time, the stable level eddy current damper 3 is connected to the power conversion circuit 1 through a conductor circuit arranged in the high-frequency power cable 2, and the conductor circuit is used to realize the stable level damper 3 and the The electrical connection of high frequency AC electrodes with low resistance between the power conversion modules 1;

And viewed along the central axial direction of the transmitting coil 4, it can also be understood that in the axial cross-sectional direction, the transmitting coil 4 is placed inside the retaining ring 5 (that is, the outer diameter of the transmitting coil Size is smaller than the outer diameter of the snap ring) or the outer diameter of the coil 4 is the same as the outer diameter of the snap ring 5 or the outer diameter of the transmitter coil 4 is larger than the outer diameter of the snap ring 5 size;

The wireless charging transmitter device further includes a magnetic flux guide body 6, which is made of ferrite soft magnetic material, amorphous soft magnetic material or nanocrystalline soft magnetic material;

When the transmitting coil 4 is placed on the inner side of the snap ring 5, the magnetic flux guide body 6 is provided in the snap ring 5 or provided on the inner side of the snap ring 5 (it should be noted that in the appendix In the figure, only the schematic diagram of the magnetic flux guide body 6 arranged in the clasp 5 is shown. The explanation and explanation of the other structure of the magnetic flux guide body 6 can be directly understood through the documents of the manual and can be obtained without any doubt. Therefore, other examples are not explained with drawings);

When the outer diameter of the transmitting coil 4 is the same as the outer diameter of the snap ring 5, the magnetic flux guide body 6 is arranged outside the snap ring 5;

When the outer diameter of the transmitting coil 4 is larger than the outer diameter of the snap ring 5, the magnetic flux guide 6 is arranged on the outside of the transmitting coil 4 and extends from the outside of the transmitting coil 4 in the direction of the snap ring 5. form.

When the magnetic flux guide body 6 is arranged inside the snap ring 5, it can be achieved by clamping the inner and outer structures of the snap ring 5;

The transmitting coil 4, the retaining ring 5, and the stable level eddy current damper 3 are arranged coaxially or non-coaxially, but it needs to be ensured that the stable level eddy current damper 3 needs to be The transmitting coil 4 covers most of the area, and the coverage area needs to be greater than 75%. The stable-level eddy current damper 3 can be circular or other shapes;

Any position on the side of the transmitting coil 4 is fixedly connected to the retaining ring 5, or the stable level eddy current damper 3 is fixedly connected to the retaining ring 5, or the transmitting coil 4 is not on the side Fixedly connected to the snap ring 5 at any position;

The stable level eddy current damper 3 is made of a sheet-like structure using iron-nickel alloy material, and the stable level eddy current damper 3 may also be made of copper or aluminum;

The stable electric potential eddy current damper 3 is electrically connected to the AC low-resistance fixed electric plane of the power conversion module 1 through a conductor circuit; the AC low-resistance fixed electric plane can be a ground plane, other stable electric planes, or through an extremely low AC impedance Ground plane or other stable electrical plane where the circuit is connected;

In this embodiment, the higher frequency part of the alternating current is often a frequency multiplication part of the fundamental frequency of the high frequency alternating current for wireless energy transmission. The fundamental frequency of the high-frequency alternating current of the wireless energy transmission is generally referred to as the fundamental frequency for short. When a wide-band alternating current is input to the transmitting coil 4, the higher frequency part of the alternating current will generate an eddy current positively related to the frequency in the stable potential eddy current damper 3, and then the stable potential eddy current damper 3 3 generates an eddy current and then generates a reverse alternating magnetic field to suppress the higher frequency part of the current in the alternating current, thereby achieving the effect of reducing the higher frequency current and suppressing electromagnetic interference;

The snap ring 5 is an integral structure.

As shown in Figure 2, it is a schematic structural diagram of a second embodiment of a wireless charging transmitter device with a snap ring structure provided by the utility model. This embodiment is partially the same as the above embodiment, and will not be omitted here. To repeat, the only difference is that the arc-shaped snap ring structure includes a first part 51 and a second part 52, and the first part 51 and the second part 52 are symmetrical and the same;

And the first part 51 and the second part 52 are hinged together.

As shown in FIG. 3, it is a schematic structural diagram of a third embodiment of a wireless charging and transmitting device with a snap ring structure provided by the utility model. The content of this embodiment is the same as that of the above embodiment, and will not be omitted here. To repeat, the only difference is that the arc-shaped snap ring structure includes a first portion 51 and a second portion 52, and the first portion 51 has a first clamping portion 511 and a first pressing portion 512;

The second part 52 has a second clamping portion 521 and a second pressing portion 522;

The first clamping portion 511 and the second clamping portion 521 are symmetrical and the same, and form a clamping structure, and the first portion 51 and the second portion 52 are hinged together;

The hinge point of the first portion 51 and the second portion 52 separates the first clamping portion 511 from the first pressing portion 512, and simultaneously separates the second clamping portion 521 from the second pressing portion 512 522 separated;

A return spring 50 is provided at the hinged position of the first clamping portion 511 and the second clamping portion 521, and two extension portions of the return spring 50 are respectively clamped in the first clamping portion. The portion 511 and the second clamping portion 521 are either caught on the first pressing portion 512 or the second pressing portion 522, and the first clamping portion 511 and the Two clamping parts 521 realize tightening.

As shown in FIG. 4, it is a schematic structural diagram of a fourth embodiment of a wireless charging transmitter device with a snap ring structure provided by the utility model. This embodiment is partially the same as the third embodiment described above. It will not be repeated, the only difference is that the clamping part of the clasp 5 structure extends inwardly from the side of the wireless charging side to form an extension part 500, and the extension part 500 is parallel to the transmitting coil 4. .

The present utility model also provides a schematic structural diagram of a fifth embodiment of a wireless charging and transmitting device with a snap ring structure. This embodiment is partially the same as the foregoing embodiment, and will not be repeated here, except that: The two ends of the snap ring 5 corresponding to the opening can be snap-connected through a structure that snaps to each other;

The snap connection method can adopt a one-way lock pin structure, one end of which is provided with a one-way lock, and the other end is provided with a corresponding pin structure. During the buckling, stable fixing is achieved by buckling, and the lock After the pin is pressed, the snap ring 5 can be opened;

In other embodiments, the snap ring 5 is provided with a silica gel strip on either end of the two ends corresponding to the opening, and the other end has a structure capable of fixing the silica gel strip;

One end of the silicone strip is fixed on either end of the snap ring 5, the other end of the snap ring 5 is provided with a silicone hole, and the other end of the snap ring 5 is provided with a convex that matches the silicone hole. Block, cooperate to fix the silica gel strip on the end.

In other embodiments, there is also provided a wireless charging transmitter device with a snap ring structure as shown in FIG. 5. The snap ring 5 is provided with corresponding silicone strips (501, 502) at both ends of the corresponding opening. One of the silicone strips (501, 502) can be connected and fixed;

Specifically, one end of any silicone strip 501 is fixed on the end of the snap ring 5 facing the opening, and a silicone hole is provided on one side of the other end of the silicone strip 501;

One end of another silica gel strip 502 is fixed on the other end of the snap ring 5 facing the opening, and the other end of the silica gel strip 502 is provided with a silica gel protrusion on the side corresponding to the silica gel hole. The holes fit each other and snap together.

Claims

A wireless charging transmitter device with a snap ring structure, characterized in that a snap ring is provided on the side of the transmitting coil that can realize the wireless charging function facing the object to be charged;

The clamping surfaces of the transmitting coil and the snap ring are parallel to each other, and the snap ring has an opening;

The snap ring has an arc-shaped snap ring structure.
The wireless charging transmitter device with a snap ring structure according to claim 1, wherein in the axial cross-sectional direction, the transmitter coil is placed inside the snap ring, or the outer diameter of the coil The size is the same as the outer diameter of the snap ring or the outer diameter of the transmitting coil is larger than the outer diameter of the snap ring.
The wireless charging transmitter device with a clasp structure according to claim 1, wherein the wireless charging transmitter device further comprises a magnetic flux guide body;

When the transmitting coil is placed on the inner side of the snap ring, the magnetic flux guide body is arranged in the snap ring or on the inner side of the snap ring;

When the outer diameter of the coil is the same as the outer diameter of the snap ring, the magnetic flux guide is arranged in the snap ring, or arranged on the outside of the snap ring;

When the outer diameter of the transmitting coil is larger than the outer diameter of the snap ring, the magnetic flux guide is arranged on the outside of the snap ring, or arranged on the outside of the coil and extends from the outside of the coil in the direction of the snap ring form.
The wireless charging transmitter device with a clasp structure according to claim 3, wherein the magnetic flux guide is a ferrite soft magnetic material, an amorphous soft magnetic material or a nanocrystalline soft magnetic material.
The wireless charging transmitter device with a snap ring structure according to claim 1, wherein the side of the transmitter coil is fixed on the snap ring at any position.
The wireless charging and transmitting device with a clasp structure according to claim 1, wherein the wireless charging and transmitting device includes a power conversion module, a high-frequency power cable, a stable level eddy current damper, a transmitting coil and a The snap ring;

Both ends of the high-frequency power cable are respectively connected to the power conversion module and the transmitting coil, and the stable-level eddy current damper is arranged on the side of the transmitting coil opposite to the arc-shaped snap ring, and The stable level eddy current damper is close to the transmitting coil, the stable level eddy current damper is parallel to the transmitting coil, and the stable level eddy current damper passes through a high-frequency low-impedance set in a high-frequency power cable The conductor circuit is connected to the power conversion module.
The wireless charging transmitter device with a snap ring structure according to claim 1, wherein the arc-shaped snap ring structure is an integral structure.
The wireless charging transmitter device with a snap ring structure according to claim 1, wherein the arc-shaped snap ring structure comprises a first part and a second part, the first part and the second part Same symmetry;

And the first part and the second part are hinged together.
The wireless charging transmitter device with a snap ring structure according to claim 1, wherein the arc-shaped snap ring structure includes a first part and a second part, and the first part has a first clamp Section and a first pressing section;

The second part has a second clamping portion and a second pressing portion;

The first clamping part and the second clamping part are symmetrical and the same, and constitute a clamping structure, and the first part and the second part are hinged together;

The hinge point of the first part and the second part separates the first clamping part from the first pressing part, and simultaneously separates the second clamping part from the second pressing part.
The wireless charging transmitter device with a snap ring structure according to claim 9, wherein a return spring is provided at the hinged position of the first clamping part and the second clamping part.
The wireless charging transmitter device with a snap ring structure according to any one of claims 1-10, wherein the clamping part of the snap ring structure extends inwardly from one side of the wireless charging. An extension.
The wireless charging and transmitting device with a snap ring structure according to claim 1, wherein the two ends of the corresponding opening of the snap ring can be snap-connected through a mutually snap-fit structure.
The wireless charging and transmitting device with a snap ring structure according to claim 1, wherein the snap ring is provided with a silicone strip on either end of the two ends corresponding to the opening, and the other end is capable of being fixedly connected to the silicone The structure of the article.
The wireless charging transmitter device with a snap ring structure according to claim 1, wherein the snap ring is provided with corresponding silicone strips at both ends of the corresponding opening, and the two silicone strips can be connected and fixed. .