CN220043071U - Double-sided wireless charging device - Google Patents

Abstract

The utility model relates to the technical field of wireless charging, and discloses a double-sided wireless charging device, which comprises a middle frame, a circuit board, a magnet ring, a first charging coil module and a second charging coil module; the middle frame comprises a middle frame base body, a magnet groove and a bone position structure, wherein the middle frame base body is an annular body with a central hole, the magnet groove is connected to the inner side of the middle frame base body, and the bone position structure is positioned below the magnet groove and close to the inner side of the middle frame base body; the circuit board comprises a first plate part and a clamping structure, the clamping structure is positioned at the edge of the first plate part, and the circuit board is mounted on the middle frame in a matched manner through the clamping structure and the bone structure; the magnet ring is accommodated in the magnet groove; the first charging coil module is stacked on the circuit board; the second coil module is stacked under the circuit board. The circuit board of the double-sided wireless charging device can be provided with complex circuits, and has higher design flexibility so as to meet more demands of users.

Description

Double-sided wireless charging device

Technical Field

The utility model relates to the technical field of wireless charging, in particular to a double-sided wireless charging device.

Background

Smartphones and various wearable devices are currently particularly common electronic products in life of people, and various demands of consumers on communication, biological state monitoring, entertainment and the like can be met through the smartphones and the wearable devices. The battery charging service time of devices such as smart phones cannot last long, and many people can charge for many times in one day along with the dependence of people on entertainment activities with high power consumption such as games, short videos and the like. Since it is possible to avoid plugging and unplugging the charging device during charging, wireless chargers have gradually taken the dominant role in the charging field of consumer terminals such as smart phones in recent years.

The Chinese patent No. 215221841U discloses a double-sided wireless charger, which realizes a double-sided chargeable structure by arranging a mobile phone charging coil and a watch charging coil on the upper and lower sides of the same charger shell. However, the structure depends on the effect that the circuit board plays a role in supporting the longitudinal structural strength, other components are required to be stuck and fixed by using the adhesive material, internal heat dissipation is affected, and the charging speed is reduced.

The chinese patent No. CN218829181U discloses another double-sided wireless charger, which carries a circuit board by adding a middle frame with a partition between an upper cover and a lower cover, and the coil structure is respectively placed under the partition and an opening formed in the middle of the partition, so that no glue is needed to adhere the components, and the structure is compact and easy to assemble. However, in order to place the coil structure, a hole matched with the coil in size is formed in the center of the partition board, the circuit board needs to be designed into a circular ring shape, and under the condition that the size of the charger is unchanged, the area of the annular circuit board is relatively reduced, namely the available area of a main board of the charger is small, and complex circuits are not arranged, so that the structure lacks flexibility in the function design of the charger, and is not beneficial to realizing the function diversity of the charger.

In view of this, there is a need for an improvement over the prior art dual sided wireless charging devices.

Disclosure of Invention

The utility model aims to provide a double-sided wireless charging device with improved functional diversity and design flexibility.

A two-sided wireless charging device, comprising:

the middle frame comprises a middle frame base body, a magnet groove and a bone position structure, wherein the middle frame base body is an annular body with a central hole, the magnet groove is connected to the inner side of the middle frame base body, and the bone position structure is positioned below the magnet groove and close to the inner side of the middle frame base body;

the circuit board comprises a first plate part and a clamping structure, wherein the clamping structure is positioned at the edge of the first plate part, and the circuit board is matched with the bone position structure through the clamping structure and is mounted to the middle frame;

a magnet ring accommodated in the magnet groove;

the first charging coil module is stacked on the circuit board; and

and a second coil module stacked under the circuit board.

In some embodiments, the magnet slot includes a slot bottom plate extending horizontally from an inner side of the middle frame base, and a slot side wall connected to the slot bottom plate and extending in a vertical direction, and the second charging coil module is located in the central hole and abuts against the slot side wall.

In some embodiments, the bone site structure includes a plurality of cantilevers extending downward from a lower surface of the groove bottom plate, and the detent structure includes a plurality of first notches, the plurality of cantilevers being in one-to-one correspondence with the plurality of first notches.

In some embodiments, the bone position structure further comprises a plurality of ribs, the plurality of ribs are connected with the inner side of the middle frame base body and the bottom plate of the groove, and the clamping structure further comprises a plurality of second notches, and the plurality of second notches are in one-to-one correspondence with a plurality of the plurality of ribs.

In some embodiments, the dual-sided wireless charging device further comprises a first charging face cover and a second charging face cover, the first charging face cover and the second charging face cover are mounted to the middle frame, and the first charging coil module is located between the first charging face cover and the circuit board, and the second charging coil module is located between the circuit board and the second charging face cover.

In some embodiments, a coil positioning groove is formed in a side, facing the circuit board, of the second charging surface cover, and the coil positioning groove is used for positioning the second charging coil module.

In some embodiments, the circuit board further includes a second plate portion and a receiving portion, the second plate portion and the receiving portion are located below the first plate portion, the second plate portion surrounds the outer side of the receiving portion, the receiving portion corresponds to the coil positioning groove, and the second charging coil module is received in the receiving portion.

In some embodiments, the first charging surface cover includes a first positioning post and a plugging post, the middle frame base body further includes a first positioning slot and a plugging hole, and the first positioning post and the plugging post are respectively inserted into the first positioning slot and the plugging hole correspondingly.

In some embodiments, the second charging face cover includes a second positioning post, and the middle frame base further includes a second positioning slot into which the second positioning post is inserted.

In some embodiments, the circuit board further comprises a master circuit and a power interface connected to the master circuit, the middle frame further comprising a cable slot disposed corresponding to the power interface.

According to the double-sided wireless charging device, the circuit board is fixed to the middle frame through the bone position structure close to the inner side of the middle frame base body and the clamping structure located at the edge of the first plate part of the circuit board, and the first charging coil module and the second charging coil module are respectively stacked in the upper direction and the lower direction of the circuit board, so that on one hand, the structure of the wireless charger is compact and convenient to install, meanwhile, as the middle frame is not required to be provided with a baffle to bear the circuit board as a main structural support piece, the center of the circuit board is not required to be provided with a through hole corresponding to the center hole of the middle frame, the area of the circuit board can be increased, complex circuits can be increased conveniently, the flexibility of charger function configuration is improved, and more requirements of users are met.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

The various features and embodiments of the utility model mentioned in the above aspects can be applied to other aspects as appropriate, where appropriate. Thus, a particular feature in one aspect may be combined with a particular feature in another aspect as appropriate.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments of the present utility model will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is an exploded view of a dual-sided wireless charging device according to an embodiment of the present utility model;

FIG. 2 is an exploded view of the dual sided wireless charging device of FIG. 1 from another perspective;

fig. 3 is a schematic perspective view of a middle frame included in a dual-sided wireless charging device according to an embodiment of the present utility model;

FIG. 4 is a schematic perspective view of the middle frame of FIG. 3 from another perspective;

fig. 5 is a schematic perspective view of a circuit board of a dual-sided wireless charging device according to an embodiment of the present utility model;

FIG. 6 is a schematic perspective view of the circuit board of FIG. 5 from another perspective;

fig. 7 is a schematic perspective view of a first charging cover included in a dual-sided wireless charging device according to an embodiment of the present utility model;

fig. 8 is a schematic perspective view of a second charging cover included in the double-sided wireless charging device according to an embodiment of the utility model.

Reference numerals illustrate:

1: a double-sided wireless charging device; 10: a first charging face cover; 100: a first cover substrate; 108: a plug-in column; 109: a first positioning column; 11: a first charging coil module; 111: a coil; 112: magnetic isolating sheets; 12: a magnet ring; 13: a middle frame; 300: a middle frame base; 311: a central bore; 312: a magnet groove; 3121: a trough bottom plate; 3122: a groove sidewall; 313: a first through hole; 316: a cable slot; 317: a cantilever; 318: a convex rib; 319: a first positioning groove; 320: a second positioning groove; 328: a plug hole; 15: a circuit board; 500: a first plate portion; 501: a second plate portion; 503: an accommodating portion; 504: a third notch; 514: a power supply interface; 517: a first notch; 518: a second notch; 16: a second charging coil module; 17: a second charging cover; 170: a second cover substrate; 172: fixing the column; 173: coil positioning grooves; 174: and a second positioning column.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The terms "first" and "second" and the like in the description of embodiments of the present utility model are used for distinguishing between different objects and not for describing a particular sequential order of objects. For example, the first receiving chamber and the second receiving chamber are used to distinguish between different receiving chambers, and are not used to describe a particular sequence of receiving chambers. The terms "inner," "middle," "bottom," "upper," and the like refer to an orientation or positional relationship based on that shown in the drawings, for convenience of description and simplicity of description only, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus are not to be construed as limiting the utility model.

In embodiments of the utility model, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.

The following describes the embodiments of the present utility model further with reference to the drawings.

Referring to fig. 1 and 2, fig. 1 is an exploded view of a dual-sided wireless charging device according to an embodiment of the present utility model, and fig. 2 is an exploded view of the dual-sided wireless charging device 1 shown in fig. 1 from another perspective. The double-sided wireless charging device 1 is a double-sided chargeable magnetic attraction wireless charging device, and mainly comprises a first charging surface cover 10, a first charging coil module 11, a magnet ring 12, a middle frame 13, a circuit board 15, a second charging coil module 16 and a second charging surface cover 17. The first charging surface cover 10 and the second charging surface cover 17 are respectively mounted and fixed to the middle frame 13 from two different directions (e.g., upper and lower directions, not for limiting the front or rear orientation of the product obtained according to the present utility model) to form a charging tray. The middle frame 13 is provided with a cable slot 316 for accessing a power supply cable to transmit a power supply signal to the circuit board 15.

Referring to fig. 3-8, the middle frame 13 according to an embodiment of the present utility model includes a middle frame body 300, a magnet slot 312, and a bone structure, wherein the middle frame body 300 is an annular body with a center 311, the magnet slot 312 is connected to the inner side of the middle frame body 300, and the bone structure is located below the magnet slot 312 and near the inner side of the middle frame body 300. As an example, the bone site structure may include a plurality of cantilevers 317 and ribs 318. As a specific example, four cantilevers 317 and two ribs 318 are shown.

The circuit board 15 includes a first plate portion 500 and a detent structure located at an edge of the first plate portion 500, and the circuit board 15 is mounted to the middle frame 13 by being matched with the bone structure by the detent structure. As an example, the detent structure includes a first notch 517 and a second notch 518. As a specific example, four first notches 517 corresponding to the positions of the cantilever 317 and two second notches 518 corresponding to the ribs 318 are shown.

The first charging coil module 11 is stacked on the circuit board 15, and the second coil module 16 is stacked under the circuit board 15. The first charging coil module 11 includes a coil 111 and a magnetism blocking sheet 112 which are stacked. The second charging coil module 16 may include another set of coils, a magnetically isolated sheet, and a positioning magnet.

As an example, the middle frame base 300 includes an annular wall, which may be generally regarded as a hollow cylinder open in the up-down direction in terms of structure, and the outer side of which may form the side surface of the charging tray. The center hole 311 is formed in a hollow portion inside the annular wall. When mounted, the first charging coil module 11 is accommodated in the central hole 311. The first charging surface cover 10 may form an upper surface of the charging tray, the second charging surface cover 17 forms a lower surface of the charging tray, and the upper surface and the lower surface of the charging tray may be used for magnetic attraction adhesion with different electronic devices, and for charging different electronic devices, so as to realize double-sided chargeable.

As an example, the magnet ring 12 is accommodated in the magnet groove 312. The magnet slot 312 includes at least a slot bottom plate 3121 and a slot side wall 3122, wherein the slot bottom plate 3121 is horizontally extended from the inner side of the middle frame body 300, and the slot side wall 3122 may be formed in a circular ring shape, and the slot side wall 3122 is connected to the slot bottom plate 3121 and extends in a vertical direction, and the slot side wall 3122 may be formed in a manner that the slot side wall 3122 is connected to the end of the slot bottom plate 3121 and extends in a direction of the first charging cover 10. The second charging coil module 16 is located in the central hole 311 and abuts against the slot sidewall 3122. Thus, the groove bottom plate 3121 serves as the groove bottom of the magnet groove 312, the groove side wall 3122 and a part of the middle frame body 300 serves as the groove wall of the magnet groove 312, and the formed magnet groove 312 is a substantially circular groove, which matches the shape of the magnet ring 12. Specifically, the magnet ring 12 may be a ring magnet having an opening, i.e., a C-shaped magnet, and the corresponding magnet slot 312 is also C-shaped. While the hollow portion of the inner side of the groove sidewall 3122 forms the center hole 311. The magnet ring 12 is placed in the magnet slot 312 and the first charging coil module 11 is clamped in the central hole 311, and the first charging coil module 11 is also stacked above the circuit board 15, that is, adjacent to the upper surface of the circuit board 15. An electronic device, such as a mobile phone, can be quickly positioned and aligned with the first charging coil module 11 by the magnetic attraction force of the magnet ring 12.

The cable slot 316 of the middle frame 13 is formed in the middle frame body 300, and the cable slot 316 is a through hole, that is, the cable slot 316 penetrates the inner and outer walls of the middle frame body. Through which a power supply cable (not shown) for connecting the circuit board 15 with an external power source can pass. The cable slot 316 may be located on the middle frame base 300 of the open section of the C-shaped magnet slot 312 to provide a more uniform overall structure of the middle frame 13. The middle frame 13 further includes first through holes 313, and the first through holes 313 are located at the bottom of the magnet slot 312, that is, at the slot bottom plate 3121, and the number of the first through holes 313 may be one or more, such as 4, and are uniformly or symmetrically distributed on the slot bottom plate 3121. The shape of the first through hole 313 may be square. Of course, the shape, number and distribution of the first through holes 313 may be changed according to the product or customer requirements, and is not limited to the above specific example.

The middle frame 13 includes a bone structure for cooperating with a clamping structure of the circuit board 15 to clamp the circuit board 15. As previously described, the bone site structure may include a plurality of cantilever arms 317, each cantilever arm 317 extending downwardly from the back surface of the magnet slot 312, i.e., the lower surface of the slot floor 3121 (i.e., the surface facing the second charging surface cover 17), the plurality of cantilever arms 317 being in one-to-one correspondence with the plurality of first indentations 517 of the circuit board 15. The cantilever 317 may have an L-shaped structure in which a main body portion of the cantilever 317 corresponding to an L-shaped vertical side (long side) extends in a vertical direction, and an end portion corresponding to an L-shaped lateral side (short side) extends in a horizontal direction from a main body end, so that the circuit board 15 can be fixed from both horizontal and vertical directions at the same time, and a main body portion of the longer cantilever 317 may have a certain elasticity, so that the operation is easier when the circuit board 15 is mounted. As an example, the number and positions of the cantilever 317 may correspond to the number and positions of the first through-holes 313, respectively, one by one.

The rib 318 is connected to the inner side of the middle frame body 300 and the groove bottom plate 3121 of the magnet groove 312. The ribs 318 may be hollow cylindrical structures, and the ribs 318 are in one-to-one correspondence with the second indentations 518. The ribs 318 may be uniformly or symmetrically distributed on the back of the middle frame 13. The ribs 318 of the hollow column structure also have a certain elasticity, so that when the circuit board 15 is clamped between the ribs 318, the circuit board 15 can be conveniently and rapidly mounted or dismounted, and meanwhile, the cantilever 317 and the ribs 318 are arranged as bone structures, so that the firmness of the structure and the convenience of mounting and dismounting can be further enhanced. The notch at the edge of the circuit board 15 is used as a clamping structure, which not only can be convenient for corresponding to the bone position structure, but also can be matched for reinforcing the installation between the two, and meanwhile, the manufacturing process is simple, and the circuit structure in the central area is not influenced.

The outer contour of the circuit board 15 is substantially matched with the middle frame body 300, for example, the middle frame body 300 is in a circular shape, and the outer contour of the circuit board 15 is substantially circular. The circuit board 15 includes a first plate portion 500 and a second plate portion 501, the second plate portion 501 being located under the first plate portion 500, the first plate portion 500 including an upper surface of the circuit board 15, the second plate portion 501 including a lower surface of the circuit board 15, the first plate portion 500 and the second plate portion 501 each having a certain thickness. The first notch 517 and the second notch 518 are both disposed at the edge of the first plate 500. The circuit board 15 further includes a receiving portion 503, the receiving portion 503 is located below the first board 500, the second board 501 surrounds the outer side of the receiving portion 503, and the second charging coil module 16 is received in the receiving portion 503. The second charging coil module 16 is used for a charging coil of a small-sized electronic device, and the size of the charging coil is relatively smaller, and the accommodating portion 503 is provided to facilitate the installation and positioning of the second charging coil module 16.

The circuit board 15 further includes a third notch 504, where the third notch 504 is disposed corresponding to the cable slot 316, and may be used to place various common interface modules, such as a power interface 514, such as an interface of USB Type-C, USB Micro B, or Lightning. A main control circuit (not shown) is provided on the circuit board 15, to which power is connected, and the cable slot 316 is provided corresponding to the power supply interface 514.

The first charging cover 10 and the second charging cover 17 are mounted on the middle frame 13, the first charging coil module 11 is located between the first charging cover 10 and the circuit board 15, and the second charging coil module 16 is located between the circuit board 15 and the second charging cover 17. Referring to fig. 3, 4, 7 and 8, the middle frame 13 further includes a first positioning slot 319, a second positioning slot 320 and a plugging hole 328. The first positioning groove 319 and the plugging hole 328 are disposed on a side of the middle frame body 300 facing the first charging surface cover 10, and the second positioning groove 320 is disposed on a side of the middle frame body 300 facing the second charging surface cover 17. The first charging face cover 10 includes a first face cover base 100, a plug post 108, and a first positioning post 109. The first cover substrate 100 may be a circular sheet-shaped cover body, the plugging column 108 and the first positioning column 109 protrude downwards from the first cover substrate 100 or protrude towards the middle frame 13, the first positioning column 109 and the plugging column 108 are respectively inserted into the first positioning slot 319 and the plugging hole 328, the first charging cover 10 and the middle frame 13 can be conveniently and rapidly installed through plugging fit of the first positioning slot 319 and the first positioning column 109, and fastening connection between the first charging cover 10 and the middle frame 13 can be reinforced through fit of the plugging hole 328 and the plugging column 108.

The second charging cover 17 includes a second cover base 170, a fixing post 172, a coil positioning groove 173, and a second positioning post 174. The coil positioning groove 173 is disposed toward the circuit board 15 side, and may be located at the center of the second cover substrate 170. The coil positioning groove 173 is used for positioning the second charging coil module 16 and corresponds to the accommodating portion 503. The second positioning post 174 of the second charging cover 17 is inserted into the second positioning groove 320 of the middle frame 13, and the two cooperate to mount the second charging cover 17 to the middle frame 13. The fixing post 172 is inserted into one of the ribs 318 and abuts against the inner wall of the rib 318.

According to the double-sided wireless charging device 1, the circuit board 15 is fixed to the lower half part of the middle frame through the bone position structure close to the inner side of the middle frame base body 300 and the clamping structure located at the edge of the circuit board 15, and the first charging coil module 11 and the second charging coil module 16 are respectively stacked in the upper direction and the lower direction of the circuit board 15, so that on one hand, the double-sided wireless charging device 1 is compact in structure and convenient to install, meanwhile, as a partition plate is not required to be arranged in the middle frame 13 to serve as a main structural support to bear elements such as the circuit 15, the center of the circuit board 15 is not required to be provided with a through hole corresponding to the central hole 311 of the middle frame 13, therefore, the effective area of the circuit board 15 can be increased, complex circuits are convenient to increase, and the flexibility of charger function configuration is improved.

It should be understood that the first charging coil module 11 and the second charging coil module 16 may respectively charge different electronic terminals, for example, may respectively charge a watch and a mobile phone, so that the dual-sided wireless charging device 1 may implement a dual-sided wireless charging function. It should be noted that the double-sided wireless charging herein refers to that either side of the charging device may be used to charge the electronic terminal. It can support simultaneous double-sided charging, or of course, double-sided single charging, i.e. only one side is charged at a time, or other modes, and the specific mode for supporting charging is not limited in the present utility model.

It should be understood that, although the present utility model performs some division on the structure of the circuit board 15, such as the first board portion 500, the second board portion 501, the accommodating portion 503, etc., these portions included in the circuit board 15 are not limited to separate components, but are different portions or different areas in the overall structure of the circuit board 15. For example, the second board portion 501 and the accommodating portion 503 are both located on the same side of the circuit board 15, and partition is performed on the side of the circuit board 15, where the accommodating portion 503 located in the middle area corresponds to the second charging coil module 16, so that the board body in the area where the accommodating portion 503 is located is not used for arranging high heat or ultra-high devices, and the high heat and ultra-high devices are disposed on the second board portion 501 as much as possible, so that the heat distribution of the components is more reasonable, and heat accumulation is avoided.

The utility model and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the utility model as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present utility model.

Claims (10)

1. A two-sided wireless charging device, comprising:

the middle frame comprises a middle frame base body, a magnet groove and a bone position structure, wherein the middle frame base body is an annular body with a central hole, the magnet groove is connected to the inner side of the middle frame base body, and the bone position structure is positioned below the magnet groove and close to the inner side of the middle frame base body;

the circuit board comprises a first plate part and a clamping structure, wherein the clamping structure is positioned at the edge of the first plate part, and the circuit board is matched with the bone position structure through the clamping structure and is mounted to the middle frame;

a magnet ring accommodated in the magnet groove;

the first charging coil module is stacked on the circuit board; and

and the second charging coil module is stacked below the circuit board.

2. The double-sided wireless charging device of claim 1, wherein the magnet slot comprises a slot bottom plate and a slot side wall, the slot bottom plate extending horizontally from an inner side of the middle frame base, the slot side wall being connected to the slot bottom plate and extending in a vertical direction, the second charging coil module being located in the central hole and abutting against the slot side wall.

3. The dual-sided wireless charging device of claim 2, wherein the bone structure comprises a plurality of cantilevers extending downwardly from a lower surface of the tank bottom plate, and wherein the detent structure comprises a plurality of first indentations, the plurality of cantilevers being in one-to-one correspondence with the plurality of first indentations.

4. The dual-sided wireless charging device of claim 3, wherein the bone structure further comprises a plurality of ribs connected to the inner side of the middle frame base and the bottom plate of the tank, the detent structure further comprises a plurality of second notches, and the plurality of second notches are in one-to-one correspondence with the plurality of ribs.

5. The dual sided wireless charging device of claim 2, further comprising a first charging face cover and a second charging face cover, the first charging face cover and the second charging face cover mounted to the center frame with the first charging coil module positioned between the first charging face cover and the circuit board and the second charging coil module positioned between the circuit board and the second charging face cover.

6. The double-sided wireless charging device of claim 5, wherein a coil positioning groove is formed in a side, facing the circuit board, of the second charging surface cover, and the coil positioning groove is used for positioning the second charging coil module.

7. The dual-sided wireless charging device of claim 6, wherein the circuit board further comprises a second plate portion and a receiving portion, the second plate portion and the receiving portion are located below the first plate portion, the second plate portion surrounds the outer side of the receiving portion, the receiving portion corresponds to the coil positioning groove, and the second charging coil module is received in the receiving portion.

8. The dual-sided wireless charging device of claim 5, wherein the first charging face cover comprises a first positioning post and a plug post, the middle frame base further comprises a first positioning slot and a plug hole, and the first positioning post and the plug post are respectively inserted into the first positioning slot and the plug hole.

9. The dual sided wireless charging device of claim 8, wherein the second charging face cover comprises a second locating post, the middle frame base further comprising a second locating slot, the second locating post being inserted into the second locating slot.

10. The dual sided wireless charging device of claim 1, wherein the circuit board further comprises a master circuit and a power interface, the power interface connected to the master circuit, the center further comprising a cable slot disposed corresponding to the power interface.