CN218352243U

CN218352243U - Power supply device

Info

Publication number: CN218352243U
Application number: CN202222170721.XU
Authority: CN
Inventors: 罗勇
Original assignee: Anker Innovations Co Ltd
Current assignee: Anker Innovations Co Ltd
Priority date: 2022-08-16
Filing date: 2022-08-16
Publication date: 2023-01-20
Anticipated expiration: 2032-08-16

Abstract

The utility model discloses a power supply device, which comprises a shell, an induction coil and a magnet, wherein a battery cell module is arranged in the shell; the induction coil is located the magnetic field region that the magnet produced, and one in induction coil and the magnet can rotate relative to the casing to make induction coil produce electric current, induction coil and electric core module electric connection. According to the power supply device, the battery cell module is arranged in the shell to store electric energy, when the electric energy is exhausted or insufficient, the induction coil or the magnet rotates relative to the shell, so that the magnetic flux passing through the induction coil changes, and then electromotive force is generated to realize power generation so as to supplement the electric energy of the battery cell module; the operation of supplementing the electric energy is very convenient, and the device is not influenced by factors such as weather and the like, so that the use requirements of multiple scenes are met.

Description

Power supply device

Technical Field

The utility model relates to a portable power source technical field especially relates to a power supply unit.

Background

A portable Power source (Power Bank) is a portable charger capable of storing electric energy and charging electronic products such as mobile devices, and is particularly applied to occasions without external Power supply. The portable power source usually utilizes the electric core to carry out the energy storage, also has portable power source configuration solar photovoltaic simultaneously to turn into the electric energy with solar energy as the replenishment when the energy storage is insufficient.

However, in outdoor or emergency situations, once the stored energy of the mobile power supply is exhausted, on one hand, the stored energy is not supplemented conditionally, on the other hand, the solar photovoltaic is limited by weather, and the solar photovoltaic is difficult to play a practical role.

SUMMERY OF THE UTILITY MODEL

Based on this, there is a need for a power supply apparatus; the power supply device is convenient for supplementing electric energy, is not limited by factors such as weather and the like, and meets the use requirements under multiple scenes.

The technical scheme is as follows:

one embodiment provides a power supply apparatus including:

the battery comprises a shell, wherein a battery cell module is arranged in the shell;

the battery cell module comprises an induction coil and a magnet, wherein the induction coil is located in a magnetic field area generated by the magnet, one of the induction coil and the magnet can rotate relative to the shell, so that the induction coil generates current, and the induction coil is electrically connected with the battery cell module.

In the power supply device, the battery cell module is arranged in the shell to store electric energy, and when the electric energy is exhausted or insufficient, the induction coil or the magnet rotates relative to the shell so as to change the magnetic flux passing through the induction coil, generate electromotive force and realize power generation so as to supplement the electric energy of the battery cell module; the operation of supplementing the electric energy is very convenient, and the device is not influenced by factors such as weather and the like, so that the use requirements of multiple scenes are met.

The technical solution is further explained as follows:

in one embodiment, the power supply device further comprises a bearing, wherein the bearing is provided with an inner ring part and an outer ring part, and the inner ring part is sleeved in the outer ring part;

the inner ring portion can rotate relative to the shell, and one of the induction coil and the magnet is arranged on the inner ring portion; or the outer ring portion is rotatable relative to the housing, one of the induction coil and the magnet being provided on the outer ring portion.

In one embodiment, the power supply device further comprises a bearing and a mounting seat;

the bearing is provided with an inner ring part, an outer ring part and a rolling part, the inner ring part is sleeved in the outer ring part, and the rolling part is arranged between the inner ring part and the outer ring part;

the installation seat is arranged on the shell, the outer ring portion can rotate relative to the installation seat, the inner ring portion is fixed to the installation seat, the magnet is arranged on the outer ring portion, and at least one part of the induction coil is located in the ring of the inner ring portion.

In one embodiment, the mounting seat has a seat body and a mounting portion connected to the seat body, the mounting portion is fixedly connected to the inner ring portion in a sleeved manner, the mounting portion is located in the ring of the inner ring portion, the mounting portion has a receiving groove, and at least a portion of the induction coil is located in the receiving groove.

In one embodiment, the power supply device further comprises a control board, the control board is located between the cell module and the mounting seat, and the control board is electrically connected with both the cell module and the induction coil;

the holding tank is for link up the logical groove of mount pad, induction coil fixes the orientation of control panel one side of mount pad.

In one embodiment, the power supply device further includes a cover body, the cover body and the base body are respectively located at two opposite ends of the inner ring portion, the cover body has a fixing portion, the fixing portion is disposed to protrude toward the base body, at least a portion of the fixing portion is fixed to the mounting portion through the receiving groove, and the outer ring portion can rotate relative to the cover body.

In one embodiment, the height of the inner ring portion is equal to the height of the outer ring portion, the base is provided with a first abutting portion, the first abutting portion protrudes toward one side of the cover, the cover is provided with a second abutting portion, the second abutting portion protrudes toward one side of the base, and two opposite ends of the inner ring portion abut against the first abutting portion and the second abutting portion respectively, so that the outer ring portion, the base and the cover are arranged at equal intervals.

In one embodiment, the mounting seat further has a limiting portion disposed annularly, the limiting portion and the mounting portion are respectively located at two opposite sides of the seat body, and at least a portion of the control board is located in the ring of the limiting portion.

In one embodiment, the control panel is provided with an inserting end, the limiting part is provided with an avoiding notch, the shell is provided with an avoiding through hole, and an external device is inserted and matched with the inserting end through the avoiding through hole and the avoiding notch.

In one embodiment, the magnets are provided with at least one, the outer ring part is provided with a placing groove for placing the magnets, the placing groove is provided with at least one and corresponds to the magnets one by one, and the placing groove is arranged along the circumferential direction of the outer ring part.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

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

Furthermore, the drawings are not drawn to scale with 1.

Fig. 1 is an exploded view of the overall structure of a power supply device according to an embodiment of the present invention;

fig. 2 is an exploded view of the structure of the embodiment in fig. 1 after the casing and the cell module are removed;

fig. 3 is a schematic structural diagram of the battery cell module, the control board and the bearing in the embodiment of fig. 1;

fig. 4 is a cross-sectional structure diagram of the battery cell module, the control board and the bearing in the embodiment of fig. 3;

FIG. 5 is an assembled structure view of the bearing, the mounting seat and the cover in the embodiment of FIG. 1;

FIG. 6 is a cross-sectional view of the bearing, the mounting seat and the cover in the embodiment of FIG. 5;

FIG. 7 is a schematic view of the overall structure of the mounting base in the embodiment of FIG. 1;

FIG. 8 is a sectional view showing the overall structure of the cover in the embodiment of FIG. 1;

fig. 9 is a schematic view of the overall structure of the bearing in the embodiment of fig. 1.

Reference is made to the accompanying drawings in which:

110. a housing; 111. avoiding the through hole; 120. a cover body; 121. a fixed part; 122. a second abutting portion; 200. a battery cell module; 310. an induction coil; 320. a magnet; 400. a bearing; 410. an inner ring portion; 420. an outer ring portion; 421. a placement groove; 430. a rolling section; 500. a mounting seat; 510. a base body; 511. a first abutting portion; 520. an installation part; 521. accommodating grooves; 530. a limiting part; 531. avoiding the notch; 600. a control panel; 610. and (4) inserting an end head.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings:

in order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

Referring to fig. 1 and 2, one embodiment provides a power supply apparatus including a housing 110, an induction coil 310, and a magnet 320. Wherein: the battery cell module 200 is disposed in the casing 110, the induction coil 310 is located in a magnetic field area generated by the magnet 320, one of the induction coil 310 and the magnet 320 can rotate relative to the casing 110, so that the induction coil 310 generates a current, and the induction coil 310 is electrically connected to the battery cell module 200.

In the power supply device, the battery cell module 200 is arranged in the casing 110 to store electric energy, and when the electric energy is exhausted or insufficient, the induction coil 310 or the magnet 320 rotates relative to the casing 110, so that the magnetic flux passing through the induction coil 310 changes, and then electromotive force is generated to realize power generation, so as to supplement the electric energy of the battery cell module 200; the operation of supplementing the electric energy is very convenient, and the device is not influenced by factors such as weather and the like, so that the use requirements of multiple scenes are met.

As shown in fig. 1, the casing 110 is disposed in a cylindrical shape, and the battery cell module 200 is disposed in a cylindrical cavity of the casing 110.

Optionally, the induction coil 310 rotates relative to the casing 110, and the magnet 320 is stationary relative to the casing 110, so that current is generated in the induction coil 310 to supplement power to the battery cell module 200.

Optionally, the magnet 320 rotates relative to the casing 110, and the induction coil 310 is stationary relative to the casing 110, so that current is generated in the induction coil 310 to supplement electric energy to the battery cell module 200.

Of course, it may be: the induction coil 310 and the magnet 320 both rotate relative to the housing 110, but the rotation speeds of the induction coil 310 and the magnet 320 are different, so that current is generated in the induction coil 310, and electric energy is supplemented to the battery cell module 200.

Optionally, the induction coil 310 is a rectangular coil or a circular coil, when the induction coil 310 and the magnet 320 generate relative motion, a current is generated in the induction coil 310, and the induction coil 310 is electrically connected with the battery cell module 200, so as to supplement the electric energy to the battery cell module 200.

In one embodiment, referring to fig. 4 and fig. 6, the power supply apparatus further includes a bearing 400, the bearing 400 has an inner ring portion 410 and an outer ring portion 420, and the inner ring portion 410 is sleeved in the outer ring portion 420.

Alternatively, the inner ring portion 410 is rotatable relative to the housing 110, and one of the induction coil 310 and the magnet 320 is provided on the inner ring portion 410.

In this case, the outer ring portion 420 is fixed relative to the housing 110, the inner ring portion 410 can rotate relative to the housing 110, and the induction coil 310 or the magnet 320 is disposed on the inner ring portion 410 and rotates relative to the housing 110 along with the inner ring portion 410, so that a relative motion is generated between the induction coil 310 and the magnet 320, and a current is generated in the induction coil 310.

Alternatively, the outer ring portion 420 is rotatable relative to the housing 110, and one of the induction coil 310 and the magnet 320 is provided on the outer ring portion 420.

In this case, the inner ring portion 410 is fixed relative to the housing 110, the outer ring portion 420 can rotate relative to the housing 110, and the induction coil 310 or the magnet 320 is disposed on the outer ring portion 420 and rotates relative to the housing 110 along with the outer ring portion 420, so that a relative motion is generated between the induction coil 310 and the magnet 320, and a current is generated in the induction coil 310.

It can be understood that:

the bearing 400 may be a sliding bearing or a rolling bearing, and when the bearing 400 is a rolling bearing, the rolling part 430 is further disposed between the outer ring part 420 and the inner ring part 410 in addition to the outer ring part 420 and the inner ring part 410, and the description thereof is omitted.

In one embodiment, referring to fig. 5, the power supply device further includes a bearing 400 and a mounting seat 500.

Alternatively, with reference to fig. 4 to 6, the bearing 400 has an inner ring portion 410, an outer ring portion 420 and a rolling portion 430, the inner ring portion 410 is sleeved in the outer ring portion 420, and the rolling portion 430 is disposed between the inner ring portion 410 and the outer ring portion 420.

The rolling part 430 enables the outer ring part 420 to have a centrifugal force when rotating, achieving a labor saving effect.

Alternatively, the rolling portion 430 includes a plurality of balls disposed between the inner ring portion 410 and the outer ring portion 420.

As shown in fig. 6, the mounting seat 500 is disposed on the housing 110, the outer ring portion 420 can rotate relative to the mounting seat 500, the inner ring portion 410 is fixed to the mounting seat 500, the magnet 320 is disposed on the outer ring portion 420, and at least a portion of the induction coil 310 is located within the ring of the inner ring portion 410.

As shown in fig. 6, the mounting portion 520 is disposed on the housing 110, and the inner ring portion 410 is fixed to the housing 110, which is equivalent to the inner ring portion 410 being stationary relative to the housing 110; when the outer ring part 420 is pulled, the outer ring part 420 rotates relative to the housing 110, at this time, the outer ring part 420 drives the magnet 320 to rotate, and the induction coil 310 on the inner ring part 410 does not rotate, so that the induction coil 310 and the magnet 320 generate relative motion, and a current is generated by changing the magnetic flux in the induction coil 310, thereby supplementing the electric energy of the battery cell module 200.

In fig. 6, a rolling portion 430 is disposed between the inner ring portion 410 and the outer ring portion 420, the magnet 320 is disposed on the outer ring portion 420, and the arrangement of the rolling portion 430 enables the magnet 320 on the outer ring portion 420 to have a centrifugal force, the larger the centrifugal force is, the faster the rotation is, and the more labor is saved during the rotation, thereby improving the efficiency of electromagnetic induction and increasing the power supplement speed.

In addition, the user can realize charging to electric core module 200 on the one hand when rotating outer ring portion 420, and on the other hand also can realize functions such as decompression, amusement through rotation operation, and the physical examination is better.

In an embodiment, please refer to fig. 2, fig. 4, fig. 6 and fig. 7, the mounting base 500 has a base 510 and a mounting portion 520 connected to the base 510, the mounting portion 520 is fixedly connected to the inner ring portion 410, the mounting portion 520 is located in the ring of the inner ring portion 410, the mounting portion 520 has a receiving groove 521, and at least a portion of the induction coil 310 is located in the receiving groove 521.

As shown in fig. 2, fig. 4, fig. 6, and fig. 7, the base 510 is a substantially circular base, the mounting portion 520 is disposed on a side of the base 510 away from the battery cell module 200, the mounting portion 520 is substantially a cylindrical structure, an accommodating groove 521 is disposed along an axial direction of the mounting portion 520, the bearing 400 is sleeved outside the mounting portion 520 through the inner ring portion 410, and at least a portion of the induction coil 310 is accommodated in the accommodating groove 521.

In one embodiment, referring to fig. 1 to 4, the power supply apparatus further includes a control board 600, the control board 600 is located between the battery cell module 200 and the mounting seat 500, and the control board 600 is electrically connected to both the battery cell module 200 and the induction coil 310.

In the embodiment shown in fig. 3, the battery cell module 200 is provided with a first tab and a second tab, and the first tab and the second tab are electrically connected to the control board 600 through wires respectively to implement current conduction; the induction coil 310 is electrically connected to the control board 600 to realize current conduction between the induction coil 310 and the control board 600, so that the induction coil 310 supplements the electric energy of the battery cell module 200 via the control board 600.

Optionally, the control board 600 is a PCB. For example, the control board 600 may be a substantially circular PCB to match the circular housing 110.

In one embodiment, referring to fig. 1 to 4, the receiving groove 521 is a through groove penetrating through the mounting base 500, and the induction coil 310 is fixed on a side of the control board 600 facing the mounting base 500.

As shown in fig. 1, the induction coil 310 is fixed on a side of the control plate 600 away from the battery cell module 200, and the accommodating groove 521 penetrates in an axial direction of the mounting seat 500, so that at least a part of the induction coil 310 on the control plate 600 can be located in the accommodating groove 521, and the induction coil 310 can cooperate with the magnet 320 to perform electromagnetic induction.

In an embodiment, referring to fig. 1, fig. 2, fig. 5 and fig. 6, the power supply device further includes a cover 120, the cover 120 and the seat 510 are respectively located at two opposite ends of the inner ring portion 410, the cover 120 has a fixing portion 121, the fixing portion 121 protrudes toward the seat 510, at least a portion of the fixing portion 121 is fixed to the mounting portion 520 through a receiving groove 521, and the outer ring portion 420 can rotate relative to the cover 120.

As shown in fig. 6, the inner ring portion 410 is sandwiched between the cover 120 and the seat 510 to be fixed relative to the housing 110; the outer ring portion 420 rotates relative to the inner ring portion 410 through the rolling portion 430 to drive the magnet 320 to rotate, and the magnet 320 and the induction coil 310 located in the accommodating groove 521 perform electromagnetic induction.

As shown in fig. 8, the fixing portion 121 is disposed on the lower side of the cover 120, the fixing portion 121 is disposed in a substantially cylindrical structure, the fixing portion 121 is inserted into the receiving groove 521 of the mounting portion 520 to be fixed to the mounting seat 500 through the mounting portion 520, and the inner ring portion 410 is interposed between the cover 120 and the mounting seat 500.

In one embodiment, referring to fig. 6 to 8, the height of the inner ring portion 410 is equal to the height of the outer ring portion 420, the seat body 510 is provided with a first abutting portion 511, the first abutting portion 511 protrudes toward one side of the cover body 120, the cover body 120 is provided with a second abutting portion 122, the second abutting portion 122 protrudes toward one side of the seat body 510, and two opposite ends of the inner ring portion 410 are respectively abutted against the first abutting portion 511 and the second abutting portion 122, so that the outer ring portion 420 and the seat body 510 and the cover body 120 are arranged at an interval.

As shown in fig. 7, the seat 510 has a first abutting portion 511, and the first abutting portion 511 and the mounting portion 520 are disposed on the same side of the seat 510.

Alternatively, as shown in fig. 7, the first abutment portion 511 is a first convex ring provided around the outer circumference of the mounting portion 520.

As shown in fig. 8, the cover 120 is provided with a second abutting portion 122, the second abutting portion 122 is a second protruding ring surrounding the fixing portion 121, and a space is provided between the second protruding ring and the fixing portion 121 to reserve a fitting space of the mounting portion 520.

As shown in fig. 6, when the inner ring portion 410 is sandwiched between the seat 510 and the cover 120, the lower end of the inner ring portion 410 abuts against the first abutting portion 511, so that the lower end of the outer ring portion 420 does not abut against the surface of the seat 510; the upper end of the inner ring portion 410 abuts against the second abutting portion 122 so that the upper end of the outer ring portion 420 does not abut against the surface of the lid body 120. The arrangement is such that the inner ring portion 410 is fixed with the cover 120 and the base 510, and the outer ring portion 420 can rotate relative to the cover 120 and the base 510.

In one embodiment, referring to fig. 1, fig. 2, fig. 6 and fig. 7, the mounting base 500 further has a limiting portion 530 disposed annularly, the limiting portion 530 and the mounting portion 520 are respectively located at two opposite sides of the base 510, and at least a portion of the control board 600 is located in the ring of the limiting portion 530.

As shown in fig. 2, the mounting part 520 is disposed at an upper side of the housing 510, the limiting part 530 is disposed at a lower side of the housing 510, and the limiting part 530 is used for mounting the control board 600 and limiting a position of the control board 600.

Optionally, with reference to fig. 2 and 7, the position-limiting portion 530 is a position-limiting ring integrally disposed on the lower side of the seat 510, the control board 600 is matched with the position-limiting ring, and the control board 600 is clamped or adhered in the position-limiting ring.

In one embodiment, referring to fig. 1 and fig. 2, the control board 600 is provided with an insertion terminal 610, the limiting portion 530 is provided with an avoidance notch 531, the housing 110 is provided with an avoidance through hole 111, and the external device is inserted into and matched with the insertion terminal 610 through the avoidance through hole 111 and the avoidance notch 531.

The plug-in terminal 610 is used for charging the battery cell module 200 through an external device; meanwhile, the battery cell module 200 also supplies power to the external device through the plug-in terminal 610.

For example, the power supply device is a portable power supply, and the plug tip 610 may be USB Type-a, USB Type-B, USB Type-C, or the like, so as to be charged and discharged through a data line or the like.

In one embodiment, referring to fig. 1, 2 and 9, the magnets 320 are provided with at least one, the outer ring portion 420 is provided with at least one placement groove 421 for placing the magnets 320, the placement grooves 421 are provided with at least one and correspond to the magnets 320 one by one, and the placement grooves 421 are arranged along the circumferential direction of the outer ring portion 420.

As shown in fig. 9, the outer ring portion 420 is provided with four placement grooves 421, the four placement grooves 421 are arranged around the circumference of the outer ring portion 420, and the four magnets 320 are provided, one for one, in the four placement grooves 421.

Alternatively, as shown in fig. 1 and 9, the placement groove 421 is an arc-shaped groove extending in the axial direction of the outer ring part 420, and the magnet 320 is an arc-shaped magnetic sheet.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

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 represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A power supply device, comprising:

the battery cell module is arranged in the shell;

2. The power supply device according to claim 1, further comprising a bearing having an inner ring portion and an outer ring portion, the inner ring portion fitting within the outer ring portion;

3. The power supply device of claim 1, further comprising a bearing and a mount;

4. The power supply device according to claim 3, wherein the mounting base has a base body and a mounting portion connected to the base body, the mounting portion is fixedly connected to the inner ring portion, the mounting portion is located in the ring of the inner ring portion, the mounting portion has a receiving groove, and at least a portion of the induction coil is located in the receiving groove.

5. The power supply device of claim 4, further comprising a control board, wherein the control board is located between the cell module and the mounting base, and is electrically connected to both the cell module and the induction coil;

6. The power supply device according to claim 5, further comprising a cover, wherein the cover and the base are respectively disposed at opposite ends of the inner ring portion, the cover has a fixing portion protruding toward the base, at least a portion of the fixing portion is fixed to the mounting portion through the receiving groove, and the outer ring portion is capable of rotating relative to the cover.

7. The power supply device according to claim 6, wherein the height of the inner ring portion is equal to the height of the outer ring portion, the base has a first abutting portion, the first abutting portion protrudes toward one side of the cover, the cover has a second abutting portion, the second abutting portion protrudes toward one side of the base, and two opposite ends of the inner ring portion abut against the first abutting portion and the second abutting portion respectively, so that the outer ring portion, the base and the cover are spaced apart from each other.

8. The power supply device according to claim 5, wherein the mounting base further has a limiting portion disposed annularly, the limiting portion and the mounting portion are respectively located at two opposite sides of the base, and at least a portion of the control board is located in the ring of the limiting portion.

9. The power supply device according to claim 8, wherein the control board is provided with a plug-in terminal, the limiting portion is provided with an avoidance notch, the housing is provided with an avoidance through hole, and an external device is in plug-in fit with the plug-in terminal through the avoidance through hole and the avoidance notch.

10. The power supply device according to any one of claims 3 to 9, wherein the magnet is provided with at least one, the outer ring portion is provided with a placement groove for placing the magnet, the placement groove is provided with at least one and corresponds to the magnet one by one, and the placement grooves are arranged along a circumferential direction of the outer ring portion.