CN110768383A - Wireless charging device and wireless charging system - Google Patents

Abstract

Embodiments of the present application provide a wireless charging device and a wireless charging system. The wireless charging device includes a connecting plate and a base, and the connecting plate is provided with a wireless transmitting coil; the base and the connecting plate pass through a rotating member. The connection board can be rotated relative to the base, and the base is provided with a wireless transmission coil and a wireless transmission management chip, and the wireless transmission coil on the connection board and the wireless transmission coil on the base are The wireless transmission management chip is electrically connected. The wireless charging device can use at least two wireless transmitting coils to charge the device to be charged at the same time, and multiple wireless transmitting coils cooperate with multiple wireless receiving coils of the device to be charged, which can reasonably distribute the charging power and shorten the charging time.

Description

Wireless charging device and wireless charging system

technical field

The present application relates to the technical field of electronic equipment, and in particular, to a wireless charging device and a wireless charging system.

Background technique

With the popularity of wireless charging, more and more electronic devices support the wireless charging function. However, due to the limitation of the thickness of the mobile phone, the coil is required to be as thin and light as possible, which limits the charging speed of wireless charging.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a wireless charging device and a wireless charging system, which can improve the charging speed.

An embodiment of the present application provides a wireless charging device, which includes:

a connecting plate, which is provided with a wireless transmitting coil;

A base, the base is connected with the connecting plate through a rotating member, the connecting plate can be rotated relative to the base, the base is provided with a wireless transmission coil and a wireless transmission management chip, the wireless transmission on the connecting plate is The transmitting coil and the wireless transmitting coil on the base are all electrically connected with the wireless transmitting management chip.

An embodiment of the present application further provides a wireless charging system, which includes a wireless charging device and an electronic device, the wireless charging device wirelessly charges a battery of the electronic device, and the wireless charging device includes a connection board and a base;

The connecting plate is provided with a wireless transmitting coil;

The base and the connecting plate are connected by a rotating member, the connecting plate can be rotated relative to the base, the base is provided with a wireless transmitting coil and a wireless transmitting management chip, the wireless transmitting coil, And the wireless transmission coils on the base are all electrically connected with the wireless transmission management chip.

The wireless charging device provided by the embodiment of the present application includes a connecting plate and a base, the base and the connecting plate are connected by a rotating member, the connecting plate can rotate relative to the base, and the base is provided with a wireless transmitting coil and a wireless transmitting management chip, The wireless transmission coil on the connection board and the wireless transmission coil on the base are all electrically connected with the wireless transmission management chip. The wireless charging device can simultaneously use at least two wireless transmitting coils to charge the device to be charged (such as a mobile phone). Multiple wireless transmitting coils cooperate with multiple wireless receiving coils of the device to be charged, which can reasonably distribute the charging power and shorten the charging time. At the same time, by using multiple transmitting coils and multiple wireless receiving coils, the current of each coil can be reduced and the heating of the coil can be reduced. The wireless transmitting coil on the connection board and the wireless transmitting coil on the base are connected in parallel to the wireless transmitting management chip, each wireless transmitting coil can be controlled individually, and one or two wireless transmitting chips can be controlled to transmit energy as required. The wireless charging device can also charge two or more devices to be charged at the same time.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 is a schematic diagram of a first structure of a wireless charging device provided by an embodiment of the present application.

FIG. 2 is a schematic diagram of a second structure of a wireless charging device provided by an embodiment of the present application.

FIG. 3 is a schematic diagram of a third structure of a wireless charging device provided by an embodiment of the present application.

FIG. 4 is a schematic diagram of a fourth structure of a wireless charging device provided by an embodiment of the present application.

FIG. 5 is a schematic diagram of a fifth structure of the wireless charging device provided by the embodiment of the present application.

FIG. 6 is a schematic diagram of a sixth structure of the wireless charging device provided by the embodiment of the present application.

FIG. 7 is a schematic diagram of a first structure of a wireless charging system provided by an embodiment of the present application.

FIG. 8 is a schematic diagram of a second structure of a wireless charging system provided by an embodiment of the present application.

FIG. 9 is a third schematic structural diagram of a wireless charging system provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

In the description of the present application, it should be understood that the terms "first" and "second" are only used for description purposes, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, features defined as "first", "second" may expressly or implicitly include one or more features.

Wireless charging technology does not require cables to complete the transmission of power, therefore, wireless charging technology is more and more popular. Wireless charging technology generally connects the adapter to a wireless charging device (such as a wireless charging base), and transmits the output power of the adapter wirelessly (such as electromagnetic waves) to the device to be charged through the wireless charging device, and wirelessly charges the device to be charged.

According to different wireless charging principles, wireless charging methods are mainly divided into three methods: magnetic coupling (or electromagnetic induction), magnetic resonance and radio waves.

At present, mainstream wireless charging standards include the QI standard, the Power Matters Alliance (PMA) standard, and the Alliance for Wireless Power (A4WP). Both the QI standard and the PMA standard use magnetic coupling for wireless charging. The A4WP standard uses magnetic resonance for wireless charging.

Embodiments of the present application provide a wireless charging device and a wireless charging system. The detailed descriptions will be given below. The wireless charging device may be a wireless charging base, a power bank with a wireless charging function, or the like.

Please refer to FIG. 1 . FIG. 1 is a schematic diagram of a first structure of a wireless charging device provided by an embodiment of the present application. The wireless charging device 200 includes a connection board 210 and a base 220 . The connecting plate 210 is provided with a wireless transmitting coil 230 . The base 220, the base 220 is connected with the connecting plate 210 through a rotating member 240, the connecting plate 210 can be rotated relative to the base 220, and the base 220 is provided with a wireless transmitting coil 230 and a wireless transmitting management chip 250 , the wireless transmission coil 230 on the connection board 210 and the wireless transmission coil 230 on the base 220 are both electrically connected to the wireless transmission management chip 250 .

The wireless charging device 200 can simultaneously use at least two wireless transmitting coils 230 to charge the device to be charged (such as a mobile phone). At the same time, through the multiple wireless transmitting coils 230 and the multiple wireless receiving coils, the current of each coil can be reduced and the heating of the coils can be reduced. The wireless transmission coil 230 on the connection board 210 and the wireless transmission coil 230 on the base 220 are connected in parallel to the wireless transmission management chip 250. The wireless transmission management chip 250 can control each wireless transmission coil 230 individually, and can control one or more wireless transmission coils 230 as required. Two wireless transmitter chips transmit energy. The wireless charging apparatus 200 can also charge two or more devices to be charged at the same time.

For example, the device to be charged has two wireless receiving coils, and the base 220 and the connecting plate 210 of the wireless charging device 200 each have one wireless transmitting coil 230 . The two wireless receiving coils of the device to be charged are respectively set in a one-to-one correspondence with the two wireless transmitting coils 230 of the wireless charging device 200 , and the two wireless transmitting coils 230 of the wireless charging device 200 are respectively disposed on the base 220 and the connecting plate 210 , the two wireless transmitting coils 230 dissipate heat respectively, and do not generate heat in the same area at the same time, thereby reducing the impact on the wireless charging device 200 . The base 220 and the connection board 210 are separated to facilitate heat dissipation.

It should be noted that the number of wireless transmitting coils 230 on the base 220 and the connecting plate 210 may be one, or two, or more, such as three or four. The number of wireless transmitting coils 230 on the base 220 and the connection board 210 may be equal or not equal.

In some embodiments, the number of the connection boards 210 is at least two, each of the connection boards 210 is provided with a wireless transmission coil 230, and the wireless transmission coils 230 on each of the connection boards 210 are connected to all the connection boards 210. The wireless transmission management chip 250 is electrically connected.

The wireless charging device 200 may include a plurality of connection boards 210, each circuit board is provided with a wireless transmission coil 230, the wireless transmission coils 230 on all the connection boards 210 are arranged in parallel, and the wireless transmission coils 230 on each connection board 210 are It is electrically connected with the wireless transmission management chip 250 . Multiple connection boards 210 can place the device to be charged more conveniently, because the wireless transmission management chip 250 will also generate heat. If there are multiple connection boards 210, the device to be charged can be placed on the connection board 210 to reduce the number of bases 220. of fever.

Please refer to FIG. 2 , which is a schematic diagram of a second structure of the wireless charging device provided by the embodiment of the present application. Each of the connecting plates 210 is connected to the base 220 through a rotating member 240 , and each of the connecting plates 210 can be rotated relative to the base 220 .

Wherein, each connecting plate 210 is connected to the base 220 through a rotating member 240 , such as being disposed on different sides of the base 220 , each connecting plate 210 can rotate relative to the base 220 . A plurality of connecting plates 210 are disposed around the base 220 . If there are two connecting plates 210 on opposite sides of the base 220, the two connecting plates 210 can be vertically arranged with the base 220, the base 220 can be lifted, the bottom of the base 220 can be suspended, and the base 220 can be added. Cooling at the bottom. In this embodiment, the bottom of the base 220 may be provided with heat dissipation holes, and the base 220 may also be provided with heat dissipation channels penetrating up and down. When the base 220 is lifted, the upper and lower heat dissipation channels can quickly and effectively take heat out of the base 220 .

Please refer to FIG. 3 , which is a schematic diagram of a third structure of a wireless charging device provided by an embodiment of the present application. In some embodiments, the connecting plate 210 includes a first connecting plate 211 and a second connecting plate 212 , the first connecting plate 211 is connected with the base 220 through a rotating member 240 , and the second connecting plate 212 The second connecting plate 212 is connected to the base 220 through the first connecting plate 211 through the rotating member 240 .

The base 220 , the first connecting plate 211 and the second connecting plate 212 are connected in sequence.

Please refer to FIG. 4 . FIG. 4 is a schematic diagram of a fourth structure of the wireless charging device provided by the embodiment of the present application. The connecting plate 210 further includes a third connecting plate 213 and a fourth connecting plate 214, the third connecting plate 213 is connected with the base 220 through a rotating member 240, and the fourth connecting plate 214 is connected with the third connecting plate 214. The connecting plate 213 is connected through the rotating member 240 , and the fourth connecting plate 214 is connected with the base 220 through the third connecting plate 213 .

The base 220 , the first connecting board 211 and the second connecting board 212 are connected in sequence, and the base 220 , the third connecting board 213 and the fourth connecting board 214 are connected in sequence. Taking the base 220 as the center, it extends to two sides of the base 220 respectively.

In some embodiments, the number of the second connecting plates 212 is at least two, the at least two second connecting plates 212 are connected in sequence, and any two connecting plates 210 of the at least two connecting plates 210 are rotated by rotating Piece 240 is connected.

The wireless charging device 200 includes a plurality of second connection boards 212, and the plurality of second connection boards 212 are connected in sequence.

In some embodiments, the first connecting plate 211 and the third connecting plate 213 are disposed on opposite sides of the base 220 .

The first connecting plate 211 and the third connecting plate 213 are disposed on opposite sides of the base 220 , with the base 220 as the center, the connecting plates 210 are respectively extended to the opposite sides of the base 220 to form a long strip.

In some embodiments, the first connecting plate 211 and the third connecting plate 213 are disposed on two adjacent sides of the base 220 .

The first connecting plate 211 and the third connecting plate 213 are disposed on two adjacent sides of the base 220 , with the base 220 as the center, the connecting plates 210 are respectively extended to the adjacent two sides of the base 220 to form a right angle.

In some embodiments, the wireless charging device 200 includes a plurality of second connection boards 212 and a plurality of fourth connection boards 214, the plurality of second connection boards 212 are connected in sequence, and the plurality of fourth connection boards 214 are connected in sequence.

Please refer to FIG. 5 , which is a schematic diagram of a fifth structure of the wireless charging device provided by the embodiment of the present application. The connecting plate 210 includes a first side adjacent to the base 220, and the wireless transmitting coil 230 on the connecting plate 210 is disposed adjacent to the first side;

The base 220 is provided with a sliding rail 270 , and the wireless transmitting coil 230 on the base 220 can also slide on the sliding rail 270 .

The wireless transmitting coil 230 on the connecting plate 210 is disposed adjacent to the base 220 , and the wireless transmitting coil 230 on the base 220 can slide along the sliding rail 270 to adjust the relative positions of the two wireless transmitting coils 230 on the base 220 and the connecting plate 210 , to match the device to be charged with two wireless receiving coils.

Wherein, the sliding rail 270 on the base 220 may have a sliding rail 270, the direction of the sliding rail 270 is perpendicular to the connecting plate 210, and the distance between the wireless transmitting coil 230 on the base 220 and the wireless transmitting coil 230 on the connecting plate 210 Adjustable. There may be multiple slide rails 270 on the base 220 . Specifically, it may include a first slide rail 270 perpendicular to the connecting plate 210, and a plurality of second slide rails 270 parallel to the connecting plate 210. The first slide rail 270 communicates with the second slide rail 270, that is, the A slide rail 270 slides to the second slide rail 270 . It can also include a plurality of first sliding rails 270 perpendicular to the connecting plate 210, and a second sliding rail 270 parallel to the connecting plate 210. The first sliding rail 270 communicates with the second sliding rail 270, that is, the The rail 270 slides to the second slide rail 270 .

It should be noted that there may be multiple connection boards 210, each connection board 210 is connected to the base 220, and the positions of the wireless transmitting coils 230 on each connection board 210 may be the same. The wireless transmitting coils 230 on each connecting board 210 may be different, so that the wireless transmitting coils 230 of the base 220 and the wireless transmitting coils 230 of different connecting boards 210 have different relative positions to match different devices to be charged. The relative positions of the two wireless transmitting coils 230 of the device to be charged are different.

In some embodiments, the connecting plate 210 is provided with a sliding rail 270 , and the wireless transmitting coil 230 can slide along the sliding rail 270 .

The wireless transmitting coil 230 on the connecting plate 210 can slide along the sliding rail 270 on the connecting plate 210 to adjust the position of the wireless transmitting coil 230 on the connecting plate 210 so as to match the device to be charged with at least two wireless receiving coils.

The sliding rail 270 provided on the connecting plate 210 may adopt the structure of the sliding rail 270 provided on the base 220 in the above-mentioned embodiment, which will not be repeated here.

Please refer to FIG. 6 , which is a schematic diagram of a sixth structure of the wireless charging device provided by the embodiment of the present application. The rotating member 240 includes a hinge, the connecting plate 210 is connected to the base 220 through the hinge, the connecting plate 210 is provided with a connecting port 280, and the wireless transmitting coil 230 on the connecting plate 210 is connected to the base 220. The port 280 is electrically connected, and the connection port 280 is electrically connected with the wireless transmission management chip 250 on the base 220 through a connection line 281 .

The connecting plates 210 are connected to the base 220 through hinges, and the connecting plates 210 are also connected through hinges, which facilitates the connection between the connecting plates 210 and between the connecting plates 210 and the base 220 . In addition, the connection board 210 and the base 220 are provided with a connection port 280 , and then the wireless transmission coil 230 on the connection board 210 and the wireless transmission management chip 250 of the base 220 are electrically connected through the connection wire 281 . The connection port 280 may be a general interface, such as a USB interface.

In some embodiments, the connection board 210 and the base 220 and the connection board 210 are not electrically connected through the connection port 280 , but by arranging wires or FPCs on the hinges, and using wires or FPCs to realize wireless transmission on the connection board 210 The coil 230 and the wireless transmission of the base 220 manage the electrical connection of the chip 250 . The wireless transmission coils 230 on the plurality of connection boards 210 are arranged in parallel, and the wireless transmission management chip 250 controls each wireless transmission coil 230 individually.

Please refer to FIG. 7 , which is a schematic structural diagram of a first structure of a wireless charging system provided by an embodiment of the present application. The wireless charging system includes a wireless charging device 200 and an electronic device 300, the wireless charging device 200 wirelessly charges the battery of the electronic device 300, and the wireless charging device 200 may be any one of the above embodiments. Wireless charging device 200 .

In some embodiments, the electronic device 300 includes at least two wireless receiving coils 310 , and the wireless charging apparatus 200 includes wireless transmitting coils 230 corresponding to the at least two wireless receiving coils 310 one-to-one.

The electronic device 300 has at least two wireless receiving coils 310 , the electronic device 300 is placed on the wireless charging device 200 , and the at least two wireless receiving coils 310 of the electronic device 300 correspond one-to-one with the transmitting coils of the wireless charging device 200 .

For example, the base 220 and the connection board 210 of the wireless charging device 200 are laid flat, the two wireless receiving coils 310 of the electronic device 300 are arranged on the rear shell of the electronic device 300 and are arranged at intervals, and one wireless receiving coil 310 of the electronic device 300 Corresponding to the wireless transmitting coil 230 of the base 220 , another wireless receiving coil 310 of the electronic device 300 corresponds to the wireless transmitting coil 230 of the connection board 210 . In this way, the two wireless transmitting coils 230 of the wireless charging device 200 simultaneously radiate electromagnetic energy, and the two wireless receiving coils 310 of the electronic device 300 simultaneously receive electromagnetic energy, convert the electromagnetic energy into electrical energy, and then charge the battery with the converted electrical energy. .

It should be noted that, three, four, or more wireless receiving coils 310 may also be set on the electronic device 300 . Correspondingly, the wireless charging device 200 may also be provided with a plurality of wireless transmitting coils 230 , which are in one-to-one correspondence with the plurality of wireless receiving coils 310 .

Please refer to FIG. 8 and FIG. 9 , FIG. 8 is a schematic diagram of a second structure of a wireless charging system provided by an embodiment of the application, and FIG. 9 is a schematic diagram of a third structure of the wireless charging system provided by an embodiment of the application. The electronic device 300 includes a body part 320 and a folding part 330, the folding part 330 and the body part 320 are connected by a rotating shaft (not shown in the figure), the folding part 330 can be rotated relative to the body part 320, the The body part 320 and the folding part 330 are both provided with a wireless receiving coil 310;

The folding portion 330 is disposed on the connecting plate 210, and the wireless receiving coil 310 of the folding portion 330 is correspondingly disposed with the wireless transmitting coil 230 of the connecting plate 210;

The body portion 320 is disposed on the base 220 , and the wireless receiving coil 310 of the body portion 320 is disposed correspondingly to the wireless transmitting coil 230 of the base 220 .

When the main body part 320 and the folding part 330 of the electronic device 300 are separated, the heat dissipation area of the wireless receiving coil 310 provided in the main body part 320 and the folding part 330 increases. If the wireless receiving coil 310 of the main body part 320 and the wireless receiving coil 310 of the folding part 330 are originally spaced apart, they can be further apart. If the wireless receiving coil 310 of the main body part 320 and the wireless receiving coil 310 of the folding part 330 Originally, the overlapping settings in space, that is, the area where the two are projected on the same plane intersect, can now be spaced apart and receive energy at the same time.

The folding part 330 is provided on the connecting plate 210, the body part 320 is provided on the base 220, and the receiving antenna and the wireless transmitting antenna correspond one-to-one.

Wherein, the connecting plate 210 and the base 220 may be formed in various shapes.

For example, the connecting plate 210 and the base 220 can form a sharp angle, the connecting plate 210 and the base 220 are erected and arranged at a certain angle with the placement surface, there is a channel between the connecting plate 210 and the base 220, and the electronic device The folded part 330 of the electronic device 300 is placed on the connection board 210 , and the body part 320 of the electronic device 300 is placed on the base 220 . In this way, the heat dissipation area is increased, and the channel between the connecting plate 210 and the base 220 can also dissipate heat. In addition, the base 220 and the placement surface are at a certain angle, and the body portion 320 of the electronic device 300 is placed on the base 220, The electronic device 300 can be used while being wirelessly charged, such as watching videos.

For another example, the connecting plate 210 may have at least two connecting plates 210, and the at least two connecting plates 210 and the base 220 may form a triangle, wherein the base plate is laid flat on the placing surface, and the folded part 330 and the body part 320 of the electronic device 300 are respectively Placed on the other two sides of the triangle (two connecting plates 210). In other embodiments, the connection board 210 can be used to replace the base plate on the placing surface, and three connection boards 210 can also form a triangle.

For another example, the connecting plate 210 may have at least two connecting plates 210, the at least two connecting plates 210 and the two connecting plates 210 in the base 220 are placed vertically, and the base 220 is placed parallel to the placement surface and suspended in the air, that is, the base The connecting plates 210 connected on both sides of the 220 support the base 220 , the folded part 330 of the electronic device 300 is placed on the base 220 , and the body part 320 of the electronic device 300 is disposed adjacent to one of the connecting plates 210 . In other embodiments, the bases 220 can be replaced by the connecting plates 210 and placed in parallel, and three connecting plates 210 can also adopt a similar structure, that is, two connecting plates 210 placed vertically support one connecting plate 210 .

The charging apparatus 200 may communicate with the electronic device 300 . Specifically, wired communication may be performed through a USB interface, or wireless communication may be performed by means of WIFI, Bluetooth, near field communication, or the like. Wireless communication is also possible through the wireless transmit coil 230 and the wireless receive coil 310 .

In the above-mentioned embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

The wireless charging device and the wireless charging system provided by the embodiments of the present application have been described in detail above, and the principles and implementations of the present application are described with specific examples. At the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific embodiments and application scope. To sum up, the content of this specification should not be construed as a limitation to the present application.

Claims (13)

1. A wireless charging device, comprising: a connecting plate, which is provided with a wireless transmitting coil; A base, the base is connected with the connecting plate through a rotating member, the connecting plate can be rotated relative to the base, the base is provided with a wireless transmission coil and a wireless transmission management chip, the wireless transmission on the connecting plate is The transmitting coil and the wireless transmitting coil on the base are all electrically connected with the wireless transmitting management chip. 2 . The wireless charging device according to claim 1 , wherein the number of the connecting boards is at least two, each of the connecting boards is provided with a wireless transmitting coil, and the The wireless transmission coils are all electrically connected with the wireless transmission management chip. 3 . The wireless charging device according to claim 2 , wherein each of the connecting plates is connected to the base through a rotating member, and each of the connecting plates can be rotated relative to the base. 4 . 4 . The wireless charging device according to claim 2 , wherein the connecting board comprises a first connecting board and a second connecting board, the first connecting board is connected with the base through a rotating member, and the The second connecting plate is connected with the first connecting plate through a rotating member, and the second connecting plate is connected with the base through the first connecting plate. 5 . The wireless charging device according to claim 4 , wherein the connecting plate further comprises a third connecting plate and a fourth connecting plate, the third connecting plate and the base are connected by a rotating member, and the 5 . The fourth connecting plate is connected with the third connecting plate through a rotating member, and the fourth connecting plate is connected with the base through the third connecting plate. 6 . The wireless charging device according to claim 5 , wherein the first connecting plate and the third connecting plate are disposed on opposite sides of the base; 6 . or The first connecting plate and the third connecting plate are arranged on two adjacent sides of the base. 7 . The wireless charging device according to claim 4 , wherein the number of the second connection boards is at least two, at least two of the second connection boards are connected in sequence, and among the at least two connection boards Any two connecting plates are connected by rotating parts. 8 . The wireless charging device according to claim 1 , wherein the connecting plate comprises a first side adjacent to the base, and the wireless transmitting coil on the connecting plate is adjacent to the first side. 9 . side settings; The base is provided with a sliding rail, and the wireless transmitting coil on the base can also slide on the sliding rail. 9 . The wireless charging device according to claim 1 , wherein a sliding rail is provided on the connecting plate, and the wireless transmitting coil can slide along the sliding rail. 10 . 10 . The wireless charging device according to claim 1 , wherein the rotating member comprises a hinge, the connecting plate is connected to the base through the hinge, and a connecting port is provided on the connecting plate, and the connecting plate is connected to the base. 11 . The wireless transmission coil on the board is electrically connected to the connection port, and the connection port is electrically connected to the wireless transmission management chip on the base through a connection wire. 11. A wireless charging system, comprising a wireless charging device and an electronic device, wherein the wireless charging device wirelessly charges a battery of the electronic device, and the wireless charging device comprises a connection board and a base; The connecting plate is provided with a wireless transmitting coil; The base and the connecting plate are connected by a rotating member, the connecting plate can be rotated relative to the base, the base is provided with a wireless transmitting coil and a wireless transmitting management chip, the wireless transmitting coil, And the wireless transmission coils on the base are all electrically connected with the wireless transmission management chip. 12. The wireless charging system according to claim 11, wherein, The electronic device includes at least two wireless receiving coils, and the wireless charging device includes transmitting coils corresponding to the at least two wireless receiving coils one-to-one. 13. The wireless charging system according to claim 11, wherein, The electronic device includes a body part and a folding part, the folding part is connected with the body part through a rotating shaft, the folding part can be rotated relative to the body part, and both the body part and the folding part are provided with wireless receiving coils; The folding part is arranged on the connecting plate, and the wireless receiving coil of the folding part is arranged correspondingly to the wireless transmitting coil of the connecting plate; The body part is arranged on the base, and the wireless receiving coil of the body part is arranged corresponding to the wireless transmitting coil of the base.

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