CN215419666U

CN215419666U - Mobile power supply

Info

Publication number: CN215419666U
Application number: CN202121495234.XU
Authority: CN
Inventors: 王江新
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-07-01
Filing date: 2021-07-01
Publication date: 2022-01-04
Anticipated expiration: 2031-07-01

Abstract

The utility model relates to a mobile power supply, including shell and bearing structure, bearing structure includes connecting portion and supporting part, the supporting part can be turned over to expansion state and turning state relatively connecting portion, under the turning state, supporting part protrusion in the one side of the regional that charges dorsad of shell, the supporting part has the first limit and the second of holding that support that is acute angle slope relatively the shell and supports the limit, when mobile power supply transversely places when placing the face, the first limit of holding that supports keeps the slope with the long limit of shell is jointly placed the face relatively with mobile power supply, when mobile power supply vertically places when placing the face, the second is supported the limit and is placed the face relatively with mobile power supply jointly with the minor face of shell and keeps the slope. The utility model provides a portable power source utilizes bearing structure can satisfy the horizontal screen of treating battery charging outfit and erects the screen support needs to promote portable power source and treat the use experience when battery charging outfit charges, and bearing structure when the expansion state, bearing structure and shell keep laminating, thereby maintain portable power source's whole pleasing to the eye.

Description

Mobile power supply

Technical Field

The application relates to the technical field of charging equipment, in particular to a mobile power supply.

Background

The portable power source is a portable charger integrating power supply and charging functions, can charge electronic equipment such as a mobile phone and a tablet personal computer, is convenient and quick to use, and is also called as a charger, a travel charger and the like. However, the existing mobile power supply has a single function, and is difficult to meet the increasing use experience of users.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a portable power source, solves the problem that the function is single and the use experience is not good.

The application provides a portable power source, includes:

a housing having a charging area for placing a device to be charged; and

the support part is connected with one side of the shell, which is back to the charging area, through the connecting part, the support part can be turned relative to the connecting part, so that the support part can move to an unfolding state and a turning state relative to the shell, the support part is attached to one side of the shell, which is back to the charging area, in the unfolding state, the support part protrudes out of one side of the shell, which is back to the charging area, in the turning state, the support part is provided with a first abutting edge and a second abutting edge which are inclined relative to the shell at acute angles, when the mobile power supply is transversely placed on a placing surface, the first abutting edge and the long edge of the shell jointly keep the mobile power supply inclined relative to the placing surface, and when the mobile power supply is longitudinally placed on the placing surface, the second abutting edge and the short edge of the shell jointly keep the mobile power supply inclined relative to the placing surface.

Above-mentioned portable power source, bearing structure are relative under the state of rolling over the shell is the first limit and the second of holding of supporting of acute angle slope, both can utilize the first limit horizontal support portable power source of holding of supporting, can utilize the second to support limit vertical support portable power source again to when charging device is treated to portable power source, bearing structure treats charging device and carries out horizontal screen support, also can treat charging device and erect the screen support, use experience when promoting portable power source and treat charging device and charge. When the supporting structure is in an unfolded state, the supporting structure is attached to one side, back to the charging area, of the shell, so that the overall attractiveness of the mobile power supply is maintained.

In one embodiment, the supporting structure comprises a foldable bottom shell, the connecting part and the supporting part are arranged on the foldable bottom shell, and the supporting part can be driven by the foldable bottom shell to be folded relative to the connecting part.

In one embodiment, one of the housing and the supporting portion is provided with a magnet, and the other is provided with a magnetic attraction piece, when the supporting portion is in the unfolding state, the magnetic attraction piece and the magnet are magnetically attracted, so that the supporting portion and one side of the housing, which faces away from the charging area, are kept attached.

In one embodiment, the connecting portion is magnetically coupled with the housing to enable the support structure to be separated from the housing.

In one embodiment, the housing is provided with a magnetic metal plate, and the connecting portion and the supporting portion are provided with magnets for magnetically attracting the magnetic metal plate.

In one embodiment, the magnetic metal plate is integrally formed with the housing by in-mold injection molding.

In one embodiment, the foldable bottom shell is connected to the housing by double-sided adhesive.

In one embodiment, the foldable bottom shell comprises a first groove and a second groove adjacent to each other, and a folding portion, wherein the connecting portion is disposed in the first groove, and the supporting portion is disposed in the second groove and can be folded around the folding portion relative to the connecting portion.

In one embodiment, the foldable bottom shell is rectangular in an unfolded state, a folding part is formed at a position of the foldable bottom shell corresponding to a gap between the connecting part and the supporting part, and the extending direction of the folding part is coincident with or parallel to a diagonal line of the foldable bottom shell.

In one embodiment, the housing comprises a first shell and a second shell which are connected with each other, the charging area is located on one side of the first shell, the mobile power supply comprises a battery, a mainboard and a wireless charging module, the battery, the mainboard and the wireless charging module are all arranged in a space enclosed by the first shell and the second shell, and the mainboard and the wireless charging module are stacked on one side of the battery facing the charging area side by side.

In one embodiment, the wireless charging module comprises a transmitting coil and a ferrite, the ferrite is stacked on the battery, and the transmitting coil is arranged on one side of the ferrite, which faces away from the battery.

In one embodiment, the wireless charging module includes a magnetic coil module, and the magnetic coil module is connected to the first shell and disposed around the circumference of the transmitting coil.

In one embodiment, the magnetic coil module comprises an annular bracket and a plurality of magnetic blocks, wherein the annular bracket is provided with an annular groove, and the plurality of magnetic blocks are arranged in the annular groove at intervals.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a supporting structure of a mobile power supply according to an embodiment when a device to be charged is supported by a horizontal screen;

fig. 2 is a schematic structural diagram of another view angle when the support structure of the mobile power supply shown in fig. 1 horizontally supports the device to be charged;

fig. 3 is a schematic structural diagram of a support structure of a mobile power supply according to an embodiment when a device to be charged is supported by a vertical screen;

fig. 4 is a schematic structural diagram of another view angle when the support structure of the mobile power supply shown in fig. 3 vertically supports the device to be charged;

FIG. 5 is an exploded view of a support structure of a portable power source according to an embodiment;

fig. 6 is a schematic view of an assembly structure of the support structure of the mobile power supply shown in fig. 5;

fig. 7 is a schematic diagram illustrating a structure of separating a magnetic metal plate from a housing in the mobile power supply according to an embodiment;

fig. 8 is a schematic view of a combination structure of the magnetic metal plate and the housing of the mobile power supply shown in fig. 7;

fig. 9 is a schematic diagram illustrating a separation structure of a support structure and a housing in another embodiment of a mobile power supply;

fig. 10 is an exploded schematic view of a support structure of a mobile power supply according to another embodiment;

fig. 11 is an exploded schematic view of a mobile power supply according to an embodiment;

fig. 12 is a schematic view illustrating a connection between a magnetic coil module and a first case in the mobile power supply according to an embodiment;

fig. 13 is an assembly diagram of the magnetic coil module and the transmitting coil in the second case when the first case is removed in the mobile power supply according to the embodiment;

fig. 14 is an exploded schematic view of a magnetic coil module in the mobile power supply according to an embodiment.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

As used herein, "device to be charged" refers to a device capable of receiving and/or transmitting communication signals including, but not limited to, devices connected via any one or several of the following connections:

(1) via wireline connections, such as via Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), Digital cable, direct cable connections;

(2) via a Wireless interface means such as a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter.

A terminal device arranged to communicate over a wireless interface may be referred to as a "mobile terminal". Examples of mobile terminals include, but are not limited to, the following electronic devices:

(1) satellite or cellular telephones;

(2) personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities;

(3) radiotelephones, pagers, internet/intranet access, Web browsers, notebooks, calendars, Personal Digital Assistants (PDAs) equipped with Global Positioning System (GPS) receivers;

(4) conventional laptop and/or palmtop receivers;

(5) conventional laptop and/or palmtop radiotelephone transceivers, and the like.

Referring to fig. 1 and fig. 2, a mobile power supply 100 according to an embodiment of the present disclosure is capable of charging an electronic device (hereinafter referred to as a "device to be charged 200") waiting to be charged, such as a smart phone, a tablet computer, and a notebook computer.

The mobile power supply 100 includes a housing 110 and a support structure 120. The housing 110 has a charging area 110a, where the charging area 110a refers to a placement position of the device to be charged 200 when the mobile power supply 100 charges or supplies power to the device to be charged 200.

The support structure 120 includes a connection portion 121 and a support portion 122. The supporting portion 122 is connected to a side of the housing 110 facing away from the charging area 110a through the connecting portion 121, the supporting portion 122 can be folded relative to the connecting portion 121, so that the supporting portion 122 can move to an unfolded state and a folded state relative to the housing 110, in the unfolded state, the supporting portion 122 is attached to the side of the housing 110 facing away from the charging area 110a, in the folded state, the supporting portion 122 protrudes out of the side of the housing 110 facing away from the charging area 110a, the supporting portion 122 has a first abutting edge and a second abutting edge inclined at an acute angle relative to the housing 110, when the mobile power supply 100 is transversely placed on the placing surface, namely, a long side of the mobile power supply 100 abuts against the placing surface, at this time, the first abutting edge and the long side of the housing 110 jointly keep the mobile power supply 100 inclined relative to the placing surface, when the mobile power supply 100 is longitudinally placed on the placing surface, namely, a short side of the mobile power supply 100 abuts against the placing surface, at this time, the second abutting edge and the short edge of the housing 110 together keep the mobile power supply 100 inclined with respect to the mounting surface. The placement surface refers to a surface on which the mobile power supply 100 stands on its side, such as a desktop or a table top.

In the mobile power supply 100, since the supporting structure 120 has the first abutting edge and the second abutting edge inclined at an acute angle relative to the housing 110 in the folded state, the first abutting edge can be used to transversely support the mobile power supply 100, and the second abutting edge can be used to vertically support the mobile power supply 100. Therefore, when the mobile power supply 100 charges the device to be charged 200, the support structure 120 performs a cross-screen support on the device to be charged 200, as shown in fig. 1 and 2. As shown in fig. 3 and fig. 4, the supporting structure 120 may also perform vertical screen support on the device to be charged 200, so as to improve the use experience of the mobile power supply 100 when charging the device to be charged 200. When the support structure 120 is in the unfolded state, the support structure 120 is kept attached to the side of the housing 110 facing away from the charging area 110a, so that the overall appearance of the mobile power supply 100 is maintained.

As shown in fig. 5 and 6, the support structure 120 includes a foldable bottom case 123. The connecting portion 121 and the supporting portion 122 are disposed on the foldable bottom case 123, and the supporting portion 122 can be driven by the foldable bottom case 123 to be folded relative to the connecting portion 121. The material of the foldable bottom case 123 may be plastic, and the foldable bottom case 123 includes a first portion 1231 and a second portion 1232 that can be folded and rotated with each other, so that when the connection portion 121 and the supporting portion 122 are respectively connected to the first portion 1231 and the second portion 1232, the foldable bottom case 123 can drive the supporting portion 122 to be folded and rotated with respect to the connection portion 121, so as to switch from the flat state to the folded state, and adapt to the requirement of the side standing support of the mobile power supply 100 by using the supporting portion 122 in the folded state.

In some embodiments, one of the housing 110 and the supporting portion 122 is provided with a magnet, and the other is provided with a magnetic attraction member, when the supporting portion 122 is in the unfolded state, the magnetic attraction member and the magnet are magnetically attracted, so that the supporting portion 122 and the side of the housing 110 facing away from the charging area 110a are kept attached.

Connecting portion 121 and shell 110 are connected with magnetic attraction to make supporting structure 120 can separate from shell 110, so can conveniently pull down supporting structure 120 from portable power source 100, satisfy different user demands. In some embodiments, the support structure 120 can be detached from the housing 110, and different styles of support structures 120 can be installed to match the housing 110, thereby improving the overall aesthetic feeling of the mobile power supply 100.

Further, as shown in fig. 7 and 8, the housing 110 is provided with a magnetic metal plate 110b, and the connecting portion 121 and the supporting portion 122 are both provided with magnets for magnetically attracting and connecting with the magnetic metal plate 110b, so that the supporting structure 120 can be conveniently detached from the housing 110, and the supporting portion 122 can be uncovered from the housing 110 to fold the supporting portion 122 away from the connecting portion 121, thereby providing stable support for the side-standing use of the mobile power supply 100.

The magnetic metal plate 110b is integrally formed on the housing 110 by in-mold injection molding, so that the structural strength of the housing 110 is improved, and the magnetic metal plate 110b can meet the requirement of mutual attraction with the magnets in the connecting portion 121 and the supporting portion 122.

In other embodiments, the connection portion 121 may not be magnetically connected to the housing 110, for example, as shown in fig. 9, the foldable bottom case 123 is connected to a side of the housing 110 facing away from the charging area 110a through the double-sided tape 124.

The connection between the connection part 121 and the support part 122 and the foldable bottom case 123 may be formed by gluing or injection molding, and in other embodiments, an installation structure for installing the connection part 121 and the support part 122 may be provided on the foldable bottom case 123. For example, as shown in fig. 10, the foldable bottom case 123 includes a first groove 123a and a second groove 123b adjacent to each other and a folding portion 123c, and the folding portion 123c can meet the folding requirement of the foldable bottom case 123. The connecting portion 121 is disposed in the first groove 123a, and the supporting portion 122 is disposed in the second groove 123b, and can be folded around the folding portion 123c relative to the connecting portion 121. Therefore, the first groove 123a and the second groove 123b are utilized to meet the installation requirements of the connecting portion 121 and the supporting portion 122, and meanwhile, with this structure, the connecting portion 121, the supporting portion 122 and the foldable bottom case 123 can be made more flat, which is beneficial to improving the attaching effect of the supporting structure 120 and the housing 110, and enhancing the overall aesthetic feeling of the mobile power supply 100.

Further, the foldable bottom case 123 is rectangular in an unfolded state, a folding portion 123c is formed at a gap between the foldable bottom case 123 and the supporting portion 122 corresponding to the connecting portion 121, and an extending direction of the folding portion 123c is overlapped with or parallel to a diagonal line of the foldable bottom case 123, so that when the foldable bottom case 123 is folded around the folding portion 123c to make the supporting portion 122 in a folded state relative to the connecting portion 121, the supporting portion 122 is separated from the housing 110 and protrudes out of one side of the housing 110 facing away from the charging area 110a, and a first abutting edge and a second abutting edge are formed at two sides of a corner corresponding to the foldable bottom case 123 separated from the housing 110, and the first abutting edge and the second abutting edge respectively meet the requirements of horizontal placement and vertical placement of the mobile unit.

In some embodiments, as shown in connection with fig. 11, the outer shell 110 includes a first shell 111 and a second shell 112. The charging area 110a is located at one side of the first shell 111, the mobile power supply 100 includes a battery 130, a motherboard 140 and a wireless charging module 150, the battery 130, the motherboard 140 and the wireless charging module 150 are all disposed in a space enclosed by the first shell 111 and the second shell 112, wherein the motherboard 140 and the wireless charging module are stacked side by side on one side of the battery 130 facing the charging area 110 a.

A snap connection may be employed between the first shell 111 and the second shell 112. In other embodiments, the first shell 111 and the second shell 112 may also be glued together at their edges. The connection manner of the first shell 111 and the second shell 112 is not limited herein.

It should be noted that, the outer shell 110 serves as a packaging casing of the mobile power supply 100, and a space enclosed by the first shell 111 and the second shell 112 after being connected provides an assembly space for the battery 130, the main board 140, the wireless charging module 150 and other structures of the mobile power supply 100.

Continuing to refer to fig. 11, the wireless charging module 150 includes a transmitting coil 151 and a ferrite 152. Ferrite 152 is stacked on battery 130, and transmitting coil 151 is disposed on the side of ferrite 152 facing away from battery 130. In this embodiment, the wireless charging module 150 and the battery 130 are stacked to maintain the compact structure of the mobile power supply 100, and meanwhile, the ferrite 152 can be used to achieve better magnetic isolation and magnetic conduction effects, so that when the wireless charging module 150 charges the device 200 to be charged, the electromagnetic energy generated by the power-on of the transmitting coil 151 is radiated to the side of the battery 130 as little as possible, which causes the temperature of the battery 130 to be too high, and the electromagnetic energy generated by the power-on of the transmitting coil 151 is radiated to the side of the device 200 to be charged as much as possible, which improves the electromagnetic conversion efficiency.

Further, a graphite sheet 150a and a foam 150b are disposed between the ferrite 152 and the battery 130, the foam 150b is attached to the battery 130, and the graphite sheet 150a is stacked on a side of the foam 150b facing away from the battery 130. The graphite sheet 150a has a good heat conduction effect, so as to accelerate the heat dissipation performance of the wireless charging module 150 during operation. Meanwhile, the battery 130 is protected by the good buffer performance of the foam 150b, so that the damage probability of the battery 130 is reduced, and the service life of the mobile power supply 100 is prolonged.

In some embodiments, as shown in fig. 12 and 13, the wireless charging module 150 includes a magnetic coil module 153, and the magnetic coil module 153 is connected to the first case 111 and disposed around the circumference side of the transmitting coil 151. The magnetic coil module 153 can increase the magnetic flux generated when the transmitting coil 151 is energized, so as to improve the electromagnetic utilization rate and accelerate the charging efficiency. In addition, the magnetic coil module 153 can adsorb and fix the device to be charged 200, and since the magnetic coil module 153 is disposed around the circumference of the transmitting coil 151, the device to be charged 200 can be aligned with the transmitting coil 151, thereby further improving the charging efficiency.

In this embodiment, since the magnetic coil module 153 is connected to the first case 111, after the battery 130, the main board 140 and the wireless charging module 150 are assembled into the second case 112, the wireless charging module 150, the battery 130, the main board 140 and other main structures can be assembled only by connecting the first case 111 and the second case 112 so that the magnetic coil module 153 surrounds the transmitting coil 151. Specifically, according to the assembling structure, the magnetic coil module 153 and the transmitting coil 151 are respectively arranged on the first shell 111 and the second shell 112, so that after the magnetic coil module 153 and the transmitting coil 151 are separately assembled, the magnetic coil module 153 and the transmitting coil 151 are aligned by connecting the first shell 111 and the second shell 112, the cooperative work efficiency is improved, the assembling efficiency is improved, and the production cost is reduced.

As shown in fig. 14, the magnetic coil module 153 includes an annular bracket 1531 and a plurality of magnetic blocks 1532, an annular groove 1531a is provided in the annular bracket 1531, the plurality of magnetic blocks 1532 are disposed in the annular groove 1531a at intervals, so that the plurality of magnetic blocks 1532 form an annular magnetic structure, since the transmitting coil 151 is opposite to the magnetic coil module 153, when the transmitting coil 151 is powered on to generate electromagnetic energy, the magnetic coil module 153 can play a good magnetic conduction effect, strengthen the electromagnetic energy transmitted to the device 200 to be charged, so as to improve the electromagnetic utilization rate, and further accelerate the charging efficiency.

Further, the bottom wall of the annular recess 1531a is provided with a double-sided adhesive tape 1531b, and the plurality of magnetic blocks 1532 are connected to the ring holder 1531 through the double-sided adhesive tape 1531b, so that the stability of the magnetic blocks 1532 is improved by the double-sided adhesive tape 1531b to ensure that the plurality of magnetic blocks 1532 maintain a space therebetween.

It should be noted that the magnetic block 1532 may be first magnetized and then installed in the annular groove 1531a, or may be first installed in the annular groove 1531a and then magnetized. For example, a double-sided adhesive tape is attached to the annular groove 1531a of the annular holder 1531, a plurality of non-magnetized magnetic blocks 1532 are then formed into an annular magnetic structure in the annular groove 1531a, and a double-sided adhesive tape (not shown) is attached to the top of the annular magnetic structure to prevent the magnetized magnets from being scattered. The side of the ring-shaped holder 1531 facing away from the ring-shaped groove 1531a is attached with foam 1531c, and then the magnetic coil module 153 is placed in a magnetizing apparatus to be magnetized, and then the magnetic coil module 153 is attached to the first case 111 through a double-sided film.

In some embodiments, the double-sided adhesive tape 1531b on the bottom wall of the annular groove 1531a may be omitted, for example, the ring-shaped holder 1531 is connected to the first housing 111 through a double-sided adhesive tape ring (not shown) covering the annular groove 1531a and connected to the plurality of magnetic blocks 1532 in the annular groove 1531a, so that the plurality of magnetic blocks 1532 in the annular groove 1531a can be fixed by the double-sided adhesive tape ring to prevent the plurality of magnetic blocks 1532 from loosening after being magnetized, and the assembled magnetic ring module 153 can be connected to the first housing 111 by the annular adhesive tape ring.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A mobile power supply, comprising:

a housing having a charging area for placing a device to be charged; and

2. The mobile power supply according to claim 1, wherein the supporting structure comprises a foldable bottom casing, the connecting portion and the supporting portion are disposed on the foldable bottom casing, and the supporting portion can be driven by the foldable bottom casing to be folded relative to the connecting portion.

3. The portable power source of claim 2, wherein one of the housing and the support portion is provided with a magnet, and the other is provided with a magnetic element, and when the support portion is in the unfolded state, the magnetic element magnetically attracts the magnet, so that the support portion is attached to a side of the housing facing away from the charging area.

4. The mobile power supply of claim 2, wherein the connecting portion magnetically connects with the housing to enable the support structure to be separated from the housing.

5. The mobile power supply according to claim 4, wherein the housing is provided with a magnetic metal plate, and the connecting portion and the supporting portion are each provided with a magnet for magnetically attracting connection with the magnetic metal plate.

6. The mobile power supply according to claim 5, wherein the magnetic metal plate is integrally molded with the housing by in-mold injection molding.

7. The mobile power supply of claim 2, wherein the foldable bottom case is coupled to the housing by a double sided adhesive.

8. The mobile power supply of claim 2, wherein the foldable bottom case comprises a first groove and a second groove adjacent to each other, and a folding portion, the connecting portion is disposed in the first groove, and the supporting portion is disposed in the second groove and can be folded around the folding portion relative to the connecting portion.

9. The mobile power supply according to claim 2, wherein the foldable bottom case is rectangular in an unfolded state, a folding portion is formed at a position of the foldable bottom case corresponding to a gap between the connecting portion and the supporting portion, and an extending direction of the folding portion is coincident with or parallel to a diagonal line of the foldable bottom case.

10. The mobile power supply according to claim 1, wherein the housing comprises a first shell and a second shell which are connected with each other, the charging area is located on one side of the first shell, the mobile power supply comprises a battery, a main board and a wireless charging module, the battery, the main board and the wireless charging module are all arranged in a space enclosed by the first shell and the second shell, and the main board and the wireless charging module are stacked on one side of the battery facing the charging area side by side.

11. The mobile power supply of claim 10, wherein the wireless charging module comprises a transmitting coil and a ferrite, the ferrite is stacked on the battery, and the transmitting coil is disposed on a side of the ferrite facing away from the battery.

12. The mobile power supply of claim 11, wherein the wireless charging module comprises a magnetic coil module, and the magnetic coil module is connected to the first casing and disposed around a peripheral side of the transmitting coil.

13. The mobile power supply of claim 12, wherein the magnetic ring module comprises an annular bracket and a plurality of magnetic blocks, the annular bracket is provided with an annular groove, and the plurality of magnetic blocks are arranged in the annular groove at intervals.