WO2021143566A1

WO2021143566A1 - Wireless charging device

Info

Publication number: WO2021143566A1
Application number: PCT/CN2021/070210
Authority: WO
Inventors: 杨俊�
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-01-14
Filing date: 2021-01-05
Publication date: 2021-07-22

Abstract

A wireless charging device (10), comprising a first body (20) and a second body (30). The first body (20) comprises a coil module (200) and a fan (400). The coil module (200) and the fan (400) are located in a first accommodating space (60). The first body (20) is provided with a second ventilation opening (621) and a first ventilation opening (111). The second body (30) is stacked with the first body (20). The first body (20) can move with respect to the second body (30) to form a passage (50) or to close the passage (50). Moreover, when the passage (50) is formed, the fan (400) works, and external air can flow through the passage (50), the first ventilation opening (111), the second ventilation opening (621), and the first accommodating space (60), so as to exchange heat with the coil module (200).

Description

Wireless charging equipment

Technical field

The present invention relates to the field of charging technology, in particular to a wireless charging device.

Background technique

Traditional wireless charging equipment has low heat dissipation efficiency. When wireless charging is performed on the equipment to be charged, the wireless charging equipment generates heat to increase the temperature of the equipment to be charged.

Summary of the invention

Based on this, it is necessary to provide a wireless charging device.

A wireless charging device includes:

The first body includes a coil module and a fan, the coil module and the fan are located in a first accommodating space inside the first body, and the first body is provided with a second ventilation communicating with the first accommodating space And the first vent; and

The second main body is laminated with the first main body;

The first body can move relative to the second body to form a passage or close a passage, and when the passage is formed, the fan works, and external air can flow through the passage and the first vent , The second vent and the first accommodating space are used for heat exchange with the coil module.

A wireless charging device includes:

The first body includes a shell assembly, a coil module and a fan arranged in the shell assembly, the shell assembly is provided with a first accommodating space and a first vent communicating with the first accommodating space; and

The second body overlaps the first body;

The first body can move relative to the second body to form a channel communicating with the first accommodation space, one end of the channel communicates with the outside world, and the other end of the channel passes through the fan and the coil in turn The module and the first vent communicate with the outside; the first body can also move relative to the second body to close the passage.

A wireless charging device includes:

The first main body includes a shell assembly, a coil module and a fan arranged in the shell assembly, the shell assembly has a supporting side for placing the device to be charged, and the supporting side is provided with a first vent; and

A second body connected to the end of the first body facing away from the supporting side;

The first body can move to a first state and a second state relative to the second body. In the first state, the second body protrudes out of the end of the shell assembly facing away from the support side, and A channel is formed between the housing assembly and the second body, one end of the channel is connected to the outside world, and the other end of the channel is connected to the outside world through the fan, the coil module, and the first vent in sequence; In the second state, the second body is housed in the housing assembly.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, without creative work, the drawings of other embodiments can also be obtained based on these drawings.

FIG. 1 is a perspective view of a wireless charging device provided by an embodiment;

2 is a cross-sectional view of the wireless charging device shown in FIG. 1, wherein the wireless charging device is in a first state;

3 is a cross-sectional view of the wireless charging device shown in FIG. 1, wherein the wireless charging device is in a second state;

Figure 4 is an exploded view of the wireless charging device shown in Figure 1;

Fig. 5 is an exploded view of the wireless charging device shown in Fig. 1 from another angle;

FIG. 6 is an exploded view of the first body of the wireless charging device shown in FIG. 4;

Fig. 7 is an assembly view of the first body shown in Fig. 6, in which the first housing is sectioned;

FIG. 8 is an exploded view of the second body of the wireless charging device shown in FIG. 4;

Figure 9 is a cross-sectional view of the second body shown in Figure 8 in an assembled state;

10 is a cross-sectional view of the wireless charging device shown in FIG. 1 in another embodiment;

FIG. 11 is a perspective view of a motor and a rack in the wireless charging device shown in FIG. 10;

Fig. 12 is a cross-sectional view of still another embodiment of the wireless charging device shown in Fig. 1.

Detailed ways

In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

As shown in FIGS. 1 to 3, in one embodiment, a wireless charging device 10 is provided. The wireless charging device 10 includes a first body 20 and a second body 30 that are stacked. A first accommodating space 60 is provided in the first body 20, and components such as a coil module 200 and a fan 400 are provided in the first accommodating space 60. The first body 20 is provided with a second vent 621 and a first vent 111. When the user is charging the device to be charged, the device to be charged can be placed on the first body 20, and the coil inside the device to be charged can transmit electrical signals with the coil 210 of the coil module 200, so that the wireless charging device 10 can be The charging device is charged. The device to be charged can be an electronic device such as a mobile phone or a tablet computer. The first body 20 can move relative to the second body 30 to form a passage 50 or close the passage 50, and when the passage 50 is formed, the fan 400 works, and external air can flow through the passage 50, the first vent 111, and the second vent. The opening 621 and the first accommodating space 60 exchange heat with the coil module 200, and take away the heat of the coil module 200 and other heat in the first accommodating space 60, so that the first body 20 is cooled.

The first body 20 can move relative to the second body 30 so that the wireless charging device 10 has a first state and a second state. In the first state, the end of the first body 20 close to the second body 30 is in contact with the second body 30 and closes the passage 50 to block the communication between the second vent 621 and the outside; in the second state, the first The end of the main body 20 close to the second main body 30 is spaced apart from the second main body 30 and forms a channel 50. The channel 50, the second vent 621, the first accommodation space 60 and the first vent 111 can form an air flow channel, that is, a heat dissipation air channel. In this way, the air in the first accommodating space 60 and the outside air flow relatively, so that the wireless charging device 10 can dissipate heat.

In one embodiment, external air can flow into the second vent 621 from the channel 50 to enter the first accommodation space 60 and flow out from the first vent 111 to take away the heat of the coil module 200. In another embodiment, external air can enter the first accommodation space 60 from the first vent 111, and flow out of the first accommodation space 60 from the second vent 621, and then flow out of the wireless charging device 10 through the channel 50, and take it away. The heat of the coil module 200.

In another embodiment, by changing the rotation direction of the fan 400, when the wireless charging device 10 is in the second state, the fan 400 works, and the outside air enters the first accommodation space from the first vent 111 and flows through the coil mold. The group 200 flows out of the first accommodating space 60 from the second vent 621, and flows out of the wireless charging device 10 from the channel 50, so as to take away the heat inside the first accommodating space 60.

When the power of the device to be charged is low, the first body 20 and the second body 30 are in the first state as shown in FIG. 2. When the power of the device to be charged is large, as shown in FIG. 3, the first body 20 can move upward relative to the second body 30, so that the wireless charging device 10 is in the second state. A channel 50 is formed between the first body 20 and the second body 30, and the outside air can enter the wireless charging device 10 through the channel 50 between the first body 20 and the second body 30, and take away the device to be charged and the wireless charging device as the air flows out of the wireless charging device 10 10 calories.

As shown in FIGS. 4 and 5, in an embodiment, in the thickness direction of the wireless charging device 10, the wireless charging device 10 sequentially includes a first housing 100, a coil module 200, a bracket 300, a fan 400, and a wind guide. The board 500, the second housing 600, the third housing 700, the circuit board 800, and the fourth housing 900. A driving assembly 40 is provided between the second housing 600 and the third housing 700, and the driving assembly 40 can drive the second housing 600 away from the third housing 700.

As shown in FIGS. 6 and 7, in one embodiment, the first housing 100, the coil module 200, the bracket 300, the fan 400, the wind deflector 500 and the second housing 600 together form the first body 20. As shown in FIGS. 8 and 9, the third housing 700, the circuit board 800 and the fourth housing 900 together form the second body 30. The driving assembly 40 is located between the first body 20 and the second body 30 and can drive the first body 20 away from the second body 30.

As shown in FIGS. 6 and 7, in an embodiment, the first housing 100 includes a first plate 110 and a first side wall 120. The first side wall 120 extends from the edge of the first plate 110, so that the first A housing 100 becomes an open box-like structure. It can be understood that the open box shape may be an open circular box-shaped structure, an open square box-shaped structure, or an open conical box-shaped structure, and is not limited thereto. In this embodiment, the first plate 110 is a circular plate, and the first side wall 120 is inclined relative to the first plate 110, so that the first housing 100 is an open conical box-shaped structure. A plurality of first vents 111 are opened on the first board 110, and the air inside the wireless charging device 10 can flow out through the first vents 111, so as to take away the heat inside the wireless charging device 10. The first plate 110 and the first side wall 120 may be an integrally formed structure.

In one embodiment, the side of the first plate 110 facing away from the first side wall 120 is provided with a supporting element 112. When the device to be charged is charged, it can be placed on the supporting element 112 to make the device to be charged and the first ventilated There is a certain distance between the ports 111 to prevent the device to be charged from covering the first vent 111. The air flowing out of the first vent 111 can flow through the surface of the device to be charged and take away the heat of the device to be charged, so that the device to be charged can cool down . The material of the supporting element 112 may be silica gel.

The second housing 600 includes a second plate 610 and a second side wall 620, and the second side wall 620 surrounds the second plate 610. In one embodiment, the second side wall 620 and the second plate 610 are integrally formed. In another embodiment, the second side wall 620 and the second plate 610 are manufactured separately and then assembled. The second housing 600 is an open box-shaped structure, which may be an open circular box-shaped structure, or an open square box-shaped structure, and may also be an open cone-shaped structure, and is not limited thereto. In this embodiment, the second plate 610 is a circular plate, and the second side wall 620 is inclined relative to the second plate 610, so that the second housing 600 has a conical open box structure. A plurality of second vents 621 are opened on the second side wall 620, and the second vents 621 are evenly distributed on the circumference of the second side wall 620. After the passage 50 exists between the first body 20 and the second body 30, outside air can enter the inside of the first body 20 through the second vent 621, take away the heat of the coil module 200, and flow out from the first vent 111 First body 20.

As shown in FIGS. 2 and 7, in the assembled state of the first body 20, the openings of the first housing 100 and the second housing 600 are arranged oppositely, and the second side wall 620 is connected to the inner surface of the first side wall 120, and There is a certain distance from the end of the first side wall 120, that is, the second housing 600 is located in the first housing 100, so that the first housing space 60 is formed between the first housing 100 and the second housing 600, In addition, the first side wall 120 and the side of the second housing 600 facing away from the first board 110 form an open second receiving space 70. The coil module 200, the bracket 300, the fan 400 and the guide plate are sequentially arranged in the first accommodating space 60, the coil module 200 is close to the first plate 110, and the guide plate is close to the first side wall 120. The fan 400 is located on the side of the coil module 200 facing the second housing 600, and the air guide plate 500 is located on the side of the fan 400 facing away from the coil module 200. The bracket 300 is used to support the coil module 200. In an embodiment, the coil module 200 includes a coil 210 and a magnetic isolation sheet 220. The magnetic isolation sheet 220 is fixed to the bracket 300, and the coil 210 is located on a side of the magnetic isolation sheet 220 facing away from the bracket 300. The second body 30 is disposed in the second accommodating space 70 and is non-fixedly connected to the first body 20 so that the first body 20 can move relative to the second body 30 to have a first state and a second state.

In one embodiment, the air deflector 500 covers the second side wall 620 to prevent the air flowing through the second vent 621 from directly flowing to the first vent 111 without flowing through the coil module 200. The air guide plate 500 is provided with a first through hole 510, and the air flowing through the second vent 621 can enter the second housing 600 and flow to the first through hole 510. The fan 400 is a centrifugal fan, and a second through hole 410 is opened on the side of the fan 400 facing the air guide plate 500, and the first through hole 510 and the second through hole 410 are connected. In an embodiment, the first through hole 510 and the second through hole 410 are coaxially arranged, and the diameter of the first through hole 510 and the second through hole 410 may be the same or different. For example, the diameter of the first through hole 510 is larger than The diameter of the second through hole 410 or the diameter of the first through hole 510 is smaller than the diameter of the second through hole 410. In another embodiment, the first through hole 510 and the second through hole 410 may also have different axes. The side wall of the fan 400 is provided with side air vents 420, and the number of the side air vents 420 is multiple, such as four. When the fan 400 is working, outside air enters the first receiving space 60 through the second vent 621, first enters the second housing 600, flows through the first through hole 510 and the second through hole 410, enters the fan 400, and enters the fan 400 from The side air vent 420 flows out, flows through the coil module 200 and flows out of the wireless charging device 10 from the first vent 111, taking away the heat of the coil module 200 and the heat of other components in the first body 20, so that the first body 20 can dissipate heat.

As shown in FIGS. 8 and 9, in an embodiment, the second body 30 includes a third housing 700, a fourth housing 900 and a circuit board 800. The third housing 700 includes an annular wall 730, a third plate 710, and a third side wall 720 surrounding the third plate 710. The third plate 710 is an annular plate. The ring wall 730 is connected to the inner ring of the third plate 710 and is perpendicular to the third plate 710. The third side wall 720 is connected to the outer ring of the third plate 710 and is connected to the third plate 710. Tilt setting between. In an embodiment, the ring wall 730, the third plate 710 and the third side wall 720 are integrally formed. The fourth housing 900 is installed on the side of the third side wall 720 facing away from the third board 710, so that the third housing 700 and the fourth housing 900 form a third accommodating space 80, and the circuit board 800 is located in the third accommodating space Within 80. In one embodiment, a thermally conductive layer is provided between the circuit board 800 and the fourth housing 900, and the thermally conductive layer is made of a thermally conductive material, such as mud-like silicone grease. It can be understood that if the circuit board 800 is directly attached to the fourth housing 900, the circuit board 800 and the fourth housing 900 are not necessarily flat surfaces, and the contact area between the two is relatively small, and the thermal conductivity is relatively small. After the mud-like heat conduction layer is set between the two, the contact area between the circuit board 800, the fourth housing 900 and the heat conduction layer is increased, and the thermal conductivity of the heat conduction layer is relatively large, so that the circuit board 800 generates heat during operation. It can be quickly transferred to the fourth housing 900 and thus to the environment around the second body 30.

In one embodiment, the third housing 700 is made of a heat insulating material to prevent the heat generated by the circuit board 800 from being transferred to the first body 20 during the working process. In another embodiment, the surface of the third housing 700 is pasted with a heat-insulating material. The circuit board 800 may be a PCB board.

As shown in Figures 2 and 3, in one embodiment, a drive assembly 40 is provided between the first body 20 and the second body 30, and the drive assembly 40 can drive the first body 20 to move relative to the second body 30. The first state and the second state. In the first state, the entire structure of the second body 30 is located in the second receiving groove, the second plate 610 and the third plate 710 are attached, and the inner surface of the first side wall 120 and the outer surface of the third side wall 720 are attached combine. Outside air cannot enter the first accommodating space 60. In the second state, the first body 20 is raised relative to the second body 30, there is a gap between the second plate 610 and the third plate 710, and there is a channel 50 between the first side wall 120 and the third side wall 720. Outside air can enter the second receiving space 70 through the channel 50. Driven by the fan 400, the outside air passes through the second vent 621 into the first receiving space 60 in turn, and then passes through the first through hole 510 and the first through hole 510 in turn. The two through holes 410 and the side air vents 420 flow through the surface of the coil module 200, take away the heat of the coil module 200 and flow out from the first vent 111, the channel 50, the second accommodation space 70, and the second vent 621 , The first accommodating space 60 and the first vent 111 form an air flow channel, that is, a heat dissipation air channel.

In another embodiment, in the first state, the end surface of the first side wall 120 away from the first plate 110 is attached to the surface of the third plate 710. It can be understood that the first body 20 "stands" on the third plate 710. On board 710. In an ideal state, there is no gap between the end of the first side wall 120 and the surface of the third plate 710, and outside air cannot enter the first receiving space 60 from there. In the second state, the first body 20 rises relative to the second body 30, so that there is a passage 50 between the end of the first side wall 120 and the third plate 710, and the first accommodating space 60 and the second accommodating space 70 are in communication The outside air can enter the first receiving space 60 from the passage 50, so that the heat of the coil module 200 is taken away under the drive of the fan 400.

As shown in FIGS. 2 and 3, in an embodiment, the ring wall 730, the fourth housing 900 and the second plate 610 together enclose a fourth accommodating space 90. The second housing 600 includes a positioning sleeve 622, and the positioning sleeve 622 is located on a side of the second plate 610 facing away from the second side wall 620. The positioning sleeve 622 has the same shape as the ring wall 730. In the first state, the positioning sleeve 622 is located in the fourth accommodating space 90, and the outer surface of the positioning sleeve 622 is attached to the inner surface of the ring wall 730. When the first body 20 moves relative to the second body 30, the cooperation between the positioning sleeve 622 and the ring wall 730 can restrict the movement of the first body 20, so that the first body 20 can only move along the wireless direction relative to the second body 30. The charging device 10 moves in the thickness direction, but cannot move in other directions. In one embodiment, the second plate 610 has a planar structure. In another embodiment, the area enclosed by the positioning sleeve 622 of the second plate 610 is recessed toward the first accommodating space 60 to facilitate the installation of the driving assembly 40.

As shown in Figures 2 and 3, in one embodiment, the drive assembly 40 includes a magnetic body 41 and an electromagnet 42, one of the magnetic body 41 and the electromagnet 42 is connected to the fourth housing 900, and the magnetic body 41 and The other of the electromagnets 42 is connected to the second board 610. In one embodiment, the circuit board 800 can detect the output power of the wireless charging device 10. When the output power of the wireless charging device 10 reaches a certain threshold, the circuit board 800 controls the electromagnet 42 to be energized and the fan 400 to operate. After the electromagnet 42 is energized, a repulsive force is generated between the magnetic body 41, which drives the second plate 610 to move away from the second body 30, that is, the first body 20 moves away from the second body 30, so that the wireless charging device 10 is moved from the first state Transition to the second state. Outside air can enter the first accommodating space 60 from the second vent 621 to take away the heat inside the first accommodating space 60. And after flowing out from the first vent 111, it can flow through the surface of the device to be charged, and take away the heat from the surface of the device to be charged.

In another embodiment, the wireless charging device 10 is provided with a temperature sensor inside, and the temperature sensor detects that the temperature inside the wireless charging device 10 reaches a certain threshold, for example, after 40°C, the circuit board 800 controls the electromagnet 42 to be energized and controls the fan 400 jobs. A repulsive force is generated between the electromagnet 42 and the magnetic body 41, so that the wireless charging device 10 changes from the first state to the second state, and can dissipate heat.

It is understandable that when the power of the device to be charged is small, the charging power between the wireless charging device 10 and the device to be charged is small, and the heat generated is small, and the wireless charging device 10 is in the first state to complete charging. The heat of the wireless charging device 10 and the device to be charged can be dissipated by itself. When the heat dissipation of the wireless charging device 10 and the device to be charged is insufficient, so that the temperature of the wireless charging device 10 reaches the threshold, the wireless charging device 10 switches to the second state, and the fan 400 works, so that the heat of the wireless charging device 10 and the device to be charged Can be quickly transmitted to the surrounding environment. It is understandable that when the temperature of the wireless charging device 10 is lower than the threshold, the wireless charging device 10 can switch to the first state again. The circuit board 800 detects the output power of the wireless charging device 10 to control the electromagnet and the fan 400. The method of switching between the first state and the second state of the wireless charging device 10 is the same as above, which will not be repeated here.

When the power of the device to be charged is large, the charging power between the wireless charging device 10 and the device to be charged is relatively large. It is also possible to detect whether the temperature inside the wireless charging device 10 reaches the threshold through the temperature sensor, or to detect the wireless charging through the circuit board 800. Whether the output power of the charging device 10 reaches the threshold is used to control the operation of the electromagnet 42 and the fan 400 to control the wireless charging device 10 to switch between the first state and the second state.

As shown in FIGS. 10 and 11, in one embodiment, the driving assembly 40 includes a motor 43 and a rack 44. One of the motor 43 and the rack 44 is connected to the fourth housing 900, and the other of the motor 43 and the rack 44 is connected to the second plate 610. The output power of the wireless charging device 10 is detected by the circuit board 800, or the temperature inside the wireless charging device 10 is detected by a temperature sensor to control the forward or reverse rotation of the motor 43, so that the wireless charging device 10 is in one of the first state and the second state. Switch between.

As shown in FIG. 12, in an embodiment, the wireless charging device 10 includes a light bar 71. The light bar 71 is fixed on the inner surface of the first side wall 120 or fixed on the outer surface of the third side wall 720. When the device 10 is in the second state, the light bar 71 is in a lit state and can be used as a state indicator.

In an embodiment, the side of the fourth housing 900 facing away from the third housing 700 is provided with a silicone pad, which may be in the shape of a strip or a sheet, for supporting the entire wireless charging device 10. The wireless charging device 10 may also be provided with a USB socket and the like.

The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, All should be considered as the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present invention, and their description is relatively specific and detailed, but they should not be understood as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

A wireless charging device includes:

The first body includes a coil module and a fan, the coil module and the fan are located in a first accommodating space inside the first body, and the first body is provided with a second ventilation communicating with the first accommodating space And the first vent; and

The second main body is laminated with the first main body;

The first body can move relative to the second body to form a passage or close a passage, and when the passage is formed, the fan works, and external air can flow through the passage and the first vent , The second vent and the first accommodating space are used for heat exchange with the coil module.
The wireless charging device according to claim 1, wherein the first body can move relative to the second body to have a first state and a second state;

In the first state, an end of the first body close to the second body contacts the second body and closes the passage;

In the second state, an end of the first body close to the second body is spaced from the second body and forms the passage.
The wireless charging device according to claim 2, wherein the first body is provided with a second accommodating space spaced apart from the first accommodating space, and the second body is located in the second accommodating space;

The second vent communicates with the first accommodating space and the second accommodating space;

In the second state, the fan works, and the passage, the second accommodating space, the second vent, the first accommodating space, and the first vent can form an airflow channel to The air inside the first accommodating space and the outside air flow relatively.
The wireless charging device according to claim 3, wherein the first body comprises a first housing and a second housing, and the second housing is installed inside the first housing and is connected to the A first housing forms the first accommodating space, and a side of the second housing facing away from the first accommodating space and a part of the structure of the first housing form the second accommodating space;

The second vent is located in the second housing, and the first vent is located in the first housing.
The wireless charging device according to claim 4, wherein the first housing comprises a first plate and a first side wall, and the first side wall surrounds the first plate; the first ventilation The opening is opened in the first plate; the second housing is installed on the first side wall;

In the first state, the inner surface of the first side wall is attached to the second body;

In the second state, the channel exists between the inner surface of the first side wall and the second body.
The wireless charging device according to claim 5, wherein the outer surface of the first board is provided with a supporting element.
The wireless charging device according to claim 4, wherein the second housing comprises a second plate and a second side wall, and the second side wall surrounds the second plate; the second ventilation The opening is opened in the second side wall; the second side wall is installed in the first housing.
The wireless charging device according to claim 4, wherein the fan is located on a side of the coil module facing the second housing; the first body includes a device located in the first accommodating space The wind deflector is located on the side of the fan facing away from the coil module; the wind deflector covers the second housing.
The wireless charging device according to claim 8, wherein the wind deflector is provided with a first through hole, a side of the fan facing the wind deflector is provided with a second through hole, and the first A through hole communicates with the second through hole; the air in the second vent can pass through the first through hole and the second through hole and enter the fan.
The wireless charging device according to any one of claims 4-9, wherein the first housing includes a first side wall, and the second housing includes a second plate;

The second body includes a third housing, and the third housing includes a third plate and a third side wall surrounding the third plate;

In the first state, the second board is attached to the third board, and the first side wall is attached to the third side wall;

In the second state, there is a gap between the second plate and the third plate, and the channel exists between the first side wall and the third side wall.
The wireless charging device according to claim 10, wherein one of the first side wall and the third side wall is provided with a light bar, and in the second state, the light bar is Light up.
The wireless charging device according to claim 10, wherein the second body includes a fourth housing and a circuit board, and the fourth housing covers the third housing to form a third accommodating space, The circuit board is located in the third accommodating space.
The wireless charging device according to claim 12, wherein a silicone pad is provided on a side of the fourth housing facing away from the third housing.
The wireless charging device according to claim 12, wherein a thermally conductive layer exists between the circuit board and the fourth casing; and the material of the third casing is an insulating material.
The wireless charging device according to claim 12, comprising a drive assembly connected to the second board and the second body, and the drive assembly can drive the first body relative to The second body moves.
The wireless charging device according to claim 15, wherein the third housing includes a ring wall, and the ring wall, the fourth housing, and the second board are enclosed together to form a fourth accommodating space , The driving assembly is located in the fourth accommodating space, and one end of the driving assembly is connected to the fourth housing, and the other end is connected to the second board.
The wireless charging device according to claim 16, wherein the driving assembly comprises a magnetic body and an electromagnet, one of the magnetic body and the electromagnet is connected to the fourth housing, and the The other of the magnetic body and the electromagnet is connected to the second plate.
The wireless charging device according to claim 16, wherein the drive assembly comprises a motor and a rack, one of the motor and the rack is connected to the fourth housing, the motor and The other of the racks is connected to the second plate.
The wireless charging device according to claim 16, wherein the second housing comprises a positioning sleeve, and the positioning sleeve is sleeved on the inner surface of the ring wall.
A wireless charging device includes:

The first body includes a shell assembly, a coil module and a fan arranged in the shell assembly, the shell assembly is provided with a first accommodating space and a first vent communicating with the first accommodating space; and

The second body overlaps the first body;

The first body can move relative to the second body to form a channel communicating with the first accommodation space, one end of the channel communicates with the outside world, and the other end of the channel passes through the fan and the coil in turn The module and the first vent communicate with the outside; the first body can also move relative to the second body to close the passage.
The wireless charging device according to claim 20, wherein the housing assembly comprises a first housing and a second housing, and the first housing surrounds the second housing and is connected to the second housing. The housing encloses to form the first accommodating space; the first housing has the first vent, and the second housing is provided with a second vent communicating with the first accommodating space; the After the first body and the second body form the passage, the passage is connected to the first vent through the second vent, the fan, and the coil module in sequence.
The wireless charging device according to claim 21, wherein, on a side of the second housing facing away from the first housing space, the first housing and the second housing are enclosed A second accommodating space is formed, and when the passage is closed, the second body is accommodated in the second accommodating space and abuts against the second housing.
A wireless charging device includes:

The first body includes a shell assembly, a coil module and a fan arranged in the shell assembly, the shell assembly has a support side for placing the device to be charged, and the support side is provided with a first vent; and

A second body connected to an end of the first body facing away from the supporting side;

The first body can move to a first state and a second state relative to the second body. In the first state, the second body protrudes out of the end of the shell assembly facing away from the support side, and A channel is formed between the shell assembly and the second body, one end of the channel is connected to the outside world, and the other end of the channel is connected to the outside world through the fan, the coil module, and the first vent in sequence; In the second state, the second body is housed in the housing assembly.
The wireless charging device according to claim 23, wherein in the second state, the shell assembly is sleeved with the second body and abuts against the second body, and the second body blocks the The fan communicates with the side of the housing assembly facing away from the support side.
The wireless charging device according to claim 23, wherein the housing assembly comprises a first housing and a second housing, and the first housing is sheathed with the second housing and is connected to the second housing. The housing encloses the first housing space; the first housing has the support side and the first vent, and the second housing is provided with a second housing communicating with the first housing space. Vent; after the first body and the second body form the passage, the passage is connected to the first vent through the second vent, the fan, and the coil module in sequence.