CN116436169B

CN116436169B - Electronic equipment protective sheath and electronic equipment subassembly

Info

Publication number: CN116436169B
Application number: CN202310673693.XA
Authority: CN
Inventors: 马雷; 武渊; 马骋宇; 王朝; 张伟
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2023-06-08
Filing date: 2023-06-08
Publication date: 2023-10-27
Anticipated expiration: 2043-06-08
Also published as: CN116436169A

Abstract

The application provides an electronic equipment protective sleeve and an electronic equipment assembly. The protective sheath includes: a first housing in which a first coil is disposed; the second shell is connected with the first shell, a second coil is arranged in the second shell, and the second coil can receive wireless charging of external equipment and can supply power to the first coil; the first coil can be used for wirelessly charging a third coil arranged in the shell. According to the application, wireless charging of the external folding screen device can be effectively realized through the relay action of the first coil and the second coil in the protective sleeve.

Description

Electronic equipment protective sheath and electronic equipment subassembly

Technical Field

The present application relates to the field of electronic devices, and in particular, to a protective cover for an electronic device and an electronic device assembly.

Background

Currently, wireless charging technology has been widely used. By means of the wireless charging base, people can charge portable terminals such as mobile phones and the like anytime and anywhere, and the cruising ability of the portable terminals is improved to a large extent.

Meanwhile, folding electronic devices (for example, folding screen mobile phones) have been increasingly popularized and applied due to the advantages of both large screen and portability.

However, for the external folding screen device, both the front and back sides of the external folding screen device are screens in the folded state, and the installation space of the wireless charging coil is greatly limited. At present, an effective wireless charging scheme is not available, and external folding screen equipment can be charged wirelessly.

Disclosure of Invention

The application provides an electronic equipment protective sleeve and an electronic equipment assembly, which are used for solving the problem of wireless charging of electronic equipment. The application is described in terms of several aspects, embodiments and advantages of which can be referenced to one another.

In a first aspect, the present application provides an electronic device protective cover, comprising: a first housing in which a first coil is disposed; the second shell is connected with the first shell, a second coil is arranged in the second shell, and the second coil can receive wireless charging of external equipment and can supply power to the first coil; the first coil can be used for wirelessly charging a third coil arranged in the shell.

According to the embodiment of the application, the coil (i.e., the second coil) directly interacting with the external device can be flexibly set to a desired shape (e.g., a shape matching a charging coil of the external device) without being limited by the shape of the housing of the electronic device, thereby improving the efficiency of wireless charging. In addition, the coil (namely the first coil) which directly interacts with the electronic equipment is arranged in the first shell sleeved on the shell of the electronic equipment, and the wireless charging coil can be conveniently arranged in the shell of the electronic equipment, so that the first coil can conveniently charge the wireless charging coil in the electronic equipment.

In some embodiments, the electronic device is an external folding screen device, the electronic device including a first screen, a second screen, and a first housing disposed opposite at least a portion of the area of the first screen; when the electronic equipment is in a folded state, the second screen rotates to be positioned at two opposite sides of the electronic equipment with the first screen; under the first use state of the protective sleeve, the electronic equipment is in a folding state, the first shell is sleeved on the first shell of the electronic equipment, and the second shell is sleeved on the second screen of the electronic equipment.

In some embodiments, the second screen rotates to be on the same side of the electronic device as the first screen when the electronic device is in the expanded state; under the second use state of the protective cover, the electronic equipment is in an unfolding state, the first shell is sleeved on the first shell of the electronic equipment, the second shell is sleeved on the second shell of the electronic equipment, and the first shell and the second shell are respectively arranged opposite to different areas of the first screen.

In some embodiments, the first housing is elongated and the first coil and the third coil are elongated coils. The embodiment of the application can improve the wireless charging efficiency.

In some embodiments, the first housing and the second housing are of a unitary construction to simplify the manufacturing process of the protective sleeve.

In a second aspect, the present application provides an electronic device assembly comprising an electronic device and a protective cover for the electronic device; wherein, the protective sheath includes: a first housing in which a first coil is disposed; the second shell is connected with the first shell, a second coil is arranged in the second shell, and the second coil can receive wireless charging of external equipment and can supply power to the first coil; the first coil can be used for wirelessly charging a third coil arranged in the shell.

Drawings

Fig. 1A is a schematic diagram of an unfolded state of an electronic device according to an embodiment of the present application (front view);

fig. 1B is a schematic diagram of an expanded state of an electronic device according to an embodiment of the present application (a back view);

fig. 1C is a schematic diagram (cross-sectional view) illustrating an unfolded state of an electronic device according to an embodiment of the present application;

fig. 2A is a schematic diagram of a folding state of an electronic device according to an embodiment of the present application (front view);

fig. 2B is a schematic diagram of a second folding state (a back view) of the electronic device according to the embodiment of the present application;

fig. 2C is a schematic diagram (cross-sectional view) illustrating a folded state of an electronic device according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a protective sleeve according to an embodiment of the present application;

fig. 4A is a schematic view of a use state of a protective sleeve according to an embodiment of the present application;

fig. 4B is a second schematic view of a use state of the protective sleeve according to the embodiment of the present application;

fig. 4C is a schematic diagram illustrating an installation manner of a protective sleeve according to an embodiment of the present application;

fig. 4D is a schematic diagram of a third use state of the protective sleeve according to the embodiment of the present application;

fig. 5 is a schematic diagram of a coil arrangement mode according to an embodiment of the present application;

fig. 6 is a schematic diagram of a second coil arrangement mode according to an embodiment of the present application;

FIG. 7 is a schematic diagram of a circuit connection relationship according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of an electronic device assembly according to another embodiment of the present application.

Detailed Description

Specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The embodiment of the application is used for providing a wireless charging scheme, and can charge the external folding screen device. The external folding screen device can be a folding mobile phone, a folding notebook computer and the like, and the application is not limited.

Fig. 1A to 2C show exemplary block diagrams of an electronic device 10 (specifically, an external folding screen device) according to an embodiment of the present application. In fig. 1A to 1C, the electronic device 10 is in an unfolded state, fig. 1A shows a front view of the electronic device 10, fig. 1B shows a back view of the electronic device 10, and fig. 1C is a cross-sectional view of the electronic device 10 (specifically, A-A cross-sectional view of fig. 1B). In fig. 2A to 2C, the electronic device 10 is in a folded state, fig. 2A shows a front view of the electronic device 10, fig. 2B shows a rear view of the electronic device 10, and fig. 2C is a cross-sectional view of the electronic device 10 (specifically, a B-B cross-sectional view of fig. 2B).

In each of the drawings, the x-axis direction indicates the longitudinal direction of the electronic device 10, the y-axis direction indicates the width direction of the electronic device 10, and the z-axis direction indicates the height direction of the electronic device 10. Wherein, the x-axis direction, the y-axis direction and the z-axis direction are perpendicular to each other. It will be appreciated that during the unfolding/folding of the electronic device 10, its dimension in the length direction correspondingly lengthens/shortens. In the unfolded state, the electronic device 10 has a maximum length; in the folded state, the electronic device 10 has a minimum length.

Referring to fig. 1A through 1C, an electronic device 10 includes a housing 11 and a screen 12, the housing 11 may be used to carry the screen 12. The screen 12 includes a first screen 121, a third screen 123, and a second screen 122 connected in sequence. The third screen 123 may be bent accordingly during the switching of the electronic device 10 from the unfolded state to the folded state. In this embodiment, the first screen 121 and the second screen 122 are two different portions of the same flexible screen. In other embodiments, the first screen 121 and the second screen 122 may be two independent screens 12. In this embodiment, the electronic device 10 may not include the third screen 123. Illustratively, a front camera 13 of the electronic device 10 may be disposed below the first screen 121.

The side of the first screen 121 facing is referred to herein as the front side of the electronic device 10, and the side opposite the front side is referred to herein as the back side of the electronic device 10.

Referring to fig. 1A and 1C, in the unfolded state, the first screen 121 and the second screen 122 are located on the same side of the electronic device 10 (i.e., both are located on the front side of the electronic device 10). The first screen 121 and the second screen 122 are substantially flush (i.e., the angle between them is about 180 or 180). In this state, the electronic device 10 has a larger display area, and can provide a better visual experience for the user.

Referring to fig. 2A and 2C, in the folded state, the first screen 121 and the second screen 122 are located at opposite sides of the electronic device 10 (i.e., the first screen 121 is located at the front of the electronic device 10, the second screen 122 is located at the rear of the electronic device 10), and the third screen 123 is in a bent shape. The first screen 121 and the second screen 122 are disposed back to back, and an included angle between the two may be about 0 ° or 0 °. In this state, the electronic device 10 has a small external dimension, and can be stored and carried by a user conveniently.

Further, referring to fig. 1A to 2C, the housing 11 of the electronic device 10 includes a first housing 111, a second housing 112, and a third housing 113. The first casing 111, the second casing 112 are disposed opposite to the first screen 121, and the third casing 113 is disposed opposite to the second screen 122. In the y-axis direction, the first screen 121, the second screen 122, the first housing 111, the second housing 112, and the third housing 113 may be substantially the same size.

Specifically, referring to fig. 1C and 2C, the first screen 121 includes a first region 121a and a second region 121b sequentially disposed along the x-axis direction, the second region 121b being closer to the second screen 122 than the first region 121 a. The first housing 111 is disposed opposite to the first region 121a of the first screen 121 (i.e., the first housing 111 is located at the back of the first region 121 a), and the second housing 112 is disposed opposite to the second region 121b of the first screen 121 (the second housing 112 is located at the back of the second region 121 b). Illustratively, a rear camera 14 of the electronic device 10 may be disposed below the first housing 111. The first housing 111 may protrude from the surface of the second housing 112 in the z-axis direction so that a larger receiving space is formed inside the first housing 111.

The third housing 113 is disposed opposite to the second screen 122, and the third housing 113 can drive the second screen 122 to rotate, so that the electronic device 10 can be switched between the unfolded state and the folded state. Referring to fig. 1C, when the electronic device 10 is in the unfolded state, the second screen 122 rotates to be located on the same side of the electronic device 10 as the first screen 121. Referring to fig. 2C, when the electronic apparatus 10 is in the folded state, the second screen 122 is rotated to be located at opposite sides of the electronic apparatus 10 from the first screen 121.

In addition, referring to fig. 1C, when the electronic device 10 is in the unfolded state, the first housing 111, the second housing 112, and the third housing 113 are located on the same side of the electronic device 10 (all located on the back side of the electronic device 10). Referring to fig. 2C, when the electronic device 10 is in the folded state, the first housing 111 is located at the back of the electronic device 10, i.e., the first housing 111 and the second screen 122 are located at the same side of the electronic device 10. The second housing 112 and the third housing 113 are located inside the electronic device 10, and are disposed opposite to each other in the z-axis direction. In the present embodiment, the first housing 111 may be always located outside the electronic apparatus 10 regardless of whether the electronic apparatus 10 is in the folded state or the unfolded state.

It will be appreciated that referring to fig. 2C, in the folded state, the first screen 121 substantially forms the front side of the electronic device 10, and the second screen 122 and the first housing 111 substantially form the back side of the electronic device 10. The sum of the dimensions of the second screen 122 and the first housing 111 in the x-axis direction is approximately equivalent to the dimension of the first screen 121. Generally, in order to increase the size of the second screen 122, the size of the first housing 111 in the x-direction is set as small as possible. That is, the first housing 111 has an elongated shape in an outer shape as seen from a back view (e.g., fig. 1B, 2B) of the electronic apparatus 10. Illustratively, the dimension of the first housing 111 in the y-axis direction is 2 times to 10 times, e.g., 2 times, 5 times, etc., the dimension of the first housing 111 in the x-axis direction.

For an external folding screen device, both sides are screens in the folded state. Since the wireless charging coil cannot be arranged inside the screen, an arrangement space of the wireless charging coil is limited in the first housing 111. Since the first housing 111 is generally elongated, the shape of the wireless charging coil is also generally configured to be elongated in order to match the shape of the first housing 111. However, the wireless charging coils of the charging base currently in mainstream are all round, and cannot be deeply matched with the strip-shaped wireless charging coils in the first housing 111, so that the charging efficiency is low, and the user experience is affected.

Therefore, some embodiments of the present application provide an electronic device protection sleeve, which can effectively realize wireless charging of an external folding screen device. In this embodiment, the protective sleeve includes a first casing and a second casing, where the first casing is sleeved on the casing of the electronic device and the second casing is sleeved on the screen of the electronic device in at least one use state of the protective sleeve.

The first shell is provided with a first coil, and the second shell is provided with a second coil. The first coil is a coil for charging the electronic device, and the second coil is a coil for receiving the charge of an external device (for example, a charging base) and supplying power to the first coil. That is, through the protective case, the external device does not need to directly charge the electronic device, but first charges the second coil of the protective case, and then the second coil transmits the received power to the electronic device through the first coil. That is, the first coil may be understood as a relay coil that transfers electrical energy between the second coil and the electronic device.

With this arrangement, the coil (i.e., the second coil) that directly interacts with the external device can be flexibly set to a desired shape (e.g., a shape that matches the charging coil of the external device) without being limited by the shape of the electronic device housing, thereby improving the efficiency of wireless charging. In addition, the coil (namely the first coil) which directly interacts with the electronic equipment is arranged in the first shell sleeved on the shell of the electronic equipment, and the wireless charging coil can be conveniently arranged in the shell of the electronic equipment, so that the first coil can conveniently charge the wireless charging coil in the electronic equipment.

The construction and manner of use of the protective sleeve is illustrated by way of example in connection with the accompanying drawings.

Fig. 3 shows an exemplary structural view of the protective sheath 20 provided in the present embodiment, and fig. 4A to 4D show three different use states of the protective sheath 20. In the present application, the protective case 20 and the electronic device 10 may together form the electronic device assembly 1.

Referring to fig. 3, the protective sheath 20 includes a housing 21, a housing 22, a bent portion 24, and a housing 23, which are sequentially connected in the x-axis direction. The bending portion 24 is made of a flexible material, and may be changed into different shapes according to the use state of the protective sleeve 20. The case 21 (first case) has a coil C1 (first coil), and the case 22 (second case) has a coil C2 (second coil).

Fig. 4A shows a use state a of the protective sheath 20 (as an example of a first use state). Referring to fig. 4A, when the protective case 20 is in the use state a, the electronic device 10 is in the folded state. The casing 21 is sleeved on the first casing 111 of the electronic device 10, the casing 22 is sleeved on the second screen 122 of the electronic device 10, and the casing 23 is sleeved on the first screen 121 of the electronic device 10. The bending part 24 is sleeved on the third screen 123 of the electronic device 10 and is bent to be matched with the third screen 123.

Coil C2 may receive wireless charging of an external device. Hereinafter, the charging base 30 is taken as an example of an external device. In other embodiments, the external device may be a tablet, a notebook computer, or the like with a wireless charging function.

For example, when the electronic device 10 needs to be charged, the electronic device assembly 1 may be placed on the charging dock 30. Illustratively, the housing 22 may conform to the surface of the charging base 30. At this time, the coil C4 in the charging base 30 can wirelessly charge the coil C2 in the housing 22.

Coil C2 may supply power to coil C1. That is, the coil C2 is electrically connected to the coil C1, and when the coil C2 receives the electric power from the charging base 30, the electric power can be transferred to the coil C1. For the sake of descriptive consistency, the electrical connection scheme between coil C2 and coil C1 is described later.

A coil C3 (as a third coil) is provided in the first housing 111 of the electronic apparatus 10. When the coil C1 receives power from the coil C2, the coil C3 can be wirelessly charged. Thus, through the relay action of the coil C2 and the coil C1, the electric energy in the charging base 30 can be transferred to the electronic device 10, thereby realizing wireless charging of the electronic device 10.

That is, with the exterior folding screen device, even if both sides thereof are screens in a folded state, wireless charging of the electronic device 10 can be realized by the protective cover 20 provided in the present embodiment.

Fig. 4B shows a use state B of the protective sheath 20 (as an example of the first use state). Referring to fig. 4B, the use state a is different from the use state B only in that the case 23 is not sleeved on the first screen 121 of the electronic device 10, but is folded to one side of the electronic device 10 to expose the first screen 121 of the electronic device 10.

It will be appreciated that in the use state B, the charging base 30 may also wirelessly charge the electronic device 10 by the relay action of the coil C2 and the coil C1. Also, in the use state B, the protective case 20 does not cover the first screen 121 of the electronic device 10, and the user can observe the display interface of the first screen 121. That is, in the use state B, the user can wirelessly charge the electronic device 10 while using the electronic device 10.

Fig. 4C and 4D show a use state C of the protective sheath 20 (as an example of a second use state). Fig. 4C is an exploded view of the electronic device assembly 1, and fig. 4D is a sectional view of the electronic device assembly 1. Referring to fig. 4C and 4D, the electronic device 10 is in the deployed state when the protective case 20 is in the use state C. The case 21 is fitted over the first casing 111 of the electronic device 10, the case 22 is fitted over the second casing 112 of the electronic device 10, the case 23 is fitted over the third casing 113 of the electronic device 10, and the bending portion 24 is unfolded in a planar shape.

When the electronic device 10 needs to be charged, the electronic device assembly 1 may be placed on the charging dock 30. For example, the case 22 is bonded to the surface of the charging base 30. At this time, the coil C4 in the charging base 30 can wirelessly charge the coil C2 in the housing 22. When the coil C2 receives the power from the charging base 30, the power may be transferred to the coil C1. When the coil C1 receives power from the coil C2, the coil C3 can be wirelessly charged. Thus, through the relay action of the coil C2 and the coil C1, the electric energy in the charging base 30 can be transferred to the electronic device 10, thereby realizing wireless charging of the electronic device 10.

That is, with the protective case 20 provided in this embodiment, wireless charging of the electronic device 10 can also be achieved when the external folding screen device is in the unfolded state. In addition, in the use state C, both the first screen 121 and the second screen 122 of the electronic device 10 are not blocked by the protective cover 20, and the user can observe the display interfaces of the first screen 121 and the second screen 122. That is, in the use state C, the user can wirelessly charge the electronic device 10 while using the electronic device 10.

In summary, through the protective sleeve 20 provided in this embodiment, not only wireless charging of the external folding screen device can be achieved, but also the protective sleeve can be applicable to various wireless charging scenes of the external folding screen device.

In addition, in the present embodiment, the coil (i.e., the coil C2) directly interacting with the charging base 30 may not be limited by the shape of the housing of the electronic device 10, but may be flexibly set to a desired shape (e.g., a shape matching the coil C4 in the charging base 30), thereby improving the efficiency of wireless charging.

Fig. 5 shows an exemplary arrangement of the coil C2. For ease of viewing, the partial structure of the protective sheath 20 is shown in solid lines and the structure of the charging base 30 is shown in phantom lines in fig. 5. Referring to fig. 5, the charging base 30 may have a circular shape with a circular coil C4 disposed therein. The casing 22 of the protective sleeve 20 is provided with a circular coil C2, and the diameter of the coil C2 may be substantially the same as the diameter of the coil C4 (for example, the diameter of the coil C2 is 0.8-1.2 times the diameter of the coil C4). By setting the coil C2 to a shape that matches the coil C4, wireless charging efficiency between the coil C4 and the coil C2 can be improved. In other embodiments, the coil C4 and the coil C2 may be configured in other shapes, for example, the coil C4 and the coil C2 are both elongated, or the coil C4 and the coil C2 are both elliptical, which is not limited by the present application, as long as the shapes of the two are matched with each other.

In the present embodiment, the coil C2 is disposed in the housing 22. That is, in the present embodiment, the case 22 is taken as an example of the second case. On the one hand, since the case 21 and the case 22 are disposed adjacently, disposing the coil C2 in the case 22 can shorten the electrical connection path between the coil C1 and the coil C2, so that the wiring in the protective sheath 20 can be simplified. On the other hand, in the above-described respective use states of the protective cover 20, there is substantially no relative rotation between the case 21 and the case 22, and therefore, the reliability of the electrical connection path of the coil C1 and the coil C2 can be improved. Further, the housing 21 and the housing 22 may be integrally formed to simplify the manufacturing process of the protective cover 20. In other embodiments, the coil C2 may also be disposed in the housing 23. In this embodiment, the case 23 may be exemplified as the second case.

Further, the coil of the protective cover 20 that directly interacts with the electronic device 10 (i.e., coil C1) is also configured to match the coil of the first housing 111 (i.e., coil C3) to improve the wireless charging efficiency of the protective cover 20 to the electronic device 10.

Fig. 6 shows an exemplary arrangement of the coils C1 and C3. For ease of viewing, the partial structure of the protective case 20 is shown in solid lines in fig. 6, and the partial structure of the electronic device 10 is shown in broken lines. Referring to fig. 6, the first housing 111 of the electronic apparatus 10 is elongated, and the coil C3 is also provided in an elongated shape in order to increase the utilization of the internal space of the first housing 111 as much as possible (it is understood that the larger the coil area, the higher the wireless charging efficiency thereof).

The casing 21 of the protective sleeve 20 is provided with a strip-shaped coil C1, and the size of the coil C1 may be substantially the same as that of the coil C3, for example, the length of the coil C1 along the x-axis direction and the length along the y-axis direction are 0.8-1.2 times the length of the coil C3 along the x-axis direction and the length along the y-axis direction, respectively. By setting the coil C1 to a shape matching the coil C3, wireless charging efficiency between the coil C3 and the coil C1 can be improved.

In other embodiments, the coil C1 and the coil C3 may be configured in other shapes, for example, the coil C1 and the coil C3 are both circular, or the coil C1 and the coil C3 are both elliptical, which is not limited by the present application, as long as the shapes of the two are matched with each other.

The following describes the circuit connection relationship between the charging base 30, the protective case 20 and the electronic device 10 provided in the embodiment of the present application.

Fig. 7 shows a circuit connection relationship diagram provided by an embodiment of the present application. Referring to fig. 7, the charging base 30 includes an adapter 30a, a Boost circuit 30b (Boost), a full-bridge inverter circuit 30C, a capacitor 30d, and a coil C4.

The adapter 30a can adjust the current and voltage of the external power supply and output dc power to the booster circuit 30 b. The direct current output by the adapter 30a is boosted by the booster circuit 30b and then transmitted to the full-bridge inverter circuit30c. The full-bridge inverter circuit 30C can convert DC power into AC power to form an oscillating current I in the LC circuit Q1 formed by the capacitor 30d and the coil C4 ₁ . Illustratively, a switch 30e (e.g., NMOS) may be disposed between the full-bridge inverter circuit 30C and the capacitor 30d, and a switch 30f (e.g., NMOS) may be disposed between the full-bridge inverter circuit 30C and the coil C4, and the on/off of the LC circuit Q1 may be controlled by controlling the switch 30e and/or the switch 30 f.

In addition, the charging base 30 may further include a step-down circuit 30g (Buck) and a power consumption module 30h, and the step-down circuit 30g may step down the output voltage of the step-up circuit 30b and supply power to the power consumption module 30 h. For example, the power module 30h may include a motor module, a fan module, and/or an RX chip, among others.

The protective sleeve 20 includes a coil C1, a capacitor 20a, a full-bridge rectifier circuit 20b, a boost circuit 20C, a full-bridge inverter circuit 20d, a capacitor 20e, and a coil C2.

Wherein coil C1 and capacitor 20a together form LC circuit Q2. The coil C1 can be coupled with the coil C4, and the alternating current I in the coil C4 ₁ An induced current I can be generated in the coil C1 ₂ . The full-bridge rectifier circuit 20b may convert the alternating current in the LC circuit Q2 into direct current.

The direct current output from the full-bridge rectifier circuit 20b is boosted by the booster circuit 20c (Boost), and then transmitted to the full-bridge inverter circuit 20d. The full-bridge inverter circuit 20d can convert the received DC power into AC power to form an oscillating current I in the LC circuit Q3 formed by the capacitor 20e and the coil C2 ₃ 。

Illustratively, a switch 20f (e.g., NMOS) may be disposed between the full-bridge inverter circuit 20d and the capacitor 20e, and a switch 20g (e.g., NMOS) may be disposed between the full-bridge inverter circuit 20d and the coil C2, and the on/off of the LC circuit Q3 may be controlled by controlling the switch 20f and/or the switch 20 g.

The electronic device 10 includes a coil C3, a capacitor 10a, a full-bridge rectifier circuit 10b, a charging chip 10C, and a storage battery 10d. Wherein coil C3 and capacitor 10a together form LC circuit Q4. Coil C3 is capable of being coupled to coil C2, alternating current I in coil C2 ₃ An induced current I can be generated in the coil C3 ₄ . The full-bridge rectifier circuit 10b may convert the alternating current in the LC circuit Q4 into direct current. The charging chip 10c is connected to the full-bridge rectifier circuit 10b and the battery 10d, respectively, and can control the full-bridge rectifier circuit 10b to charge the battery 10d.

In summary, the electric energy in the charging base 30 can be transmitted to the electronic device 10 through the coupling action of the coil C4 and the coil C1, and the coupling action of the coil C2 and the coil C3.

It will be appreciated that the circuit connection diagram shown in fig. 7 is merely illustrative and that other variations may be made by those skilled in the art. For example, by providing the booster circuit 30b and the booster circuit 20c, the current in the LC circuits Q1 and Q3 can be reduced in the case where the power is constant, thereby reducing the circuit loss. In other embodiments, boost circuit 30b and/or boost circuit 20c may not be included in the circuit.

The construction of the protective case 20 was described above with respect to an external folding screen device as an example of the electronic device 10. However, the present application is not limited thereto, and in other embodiments, the electronic device 10 may be an inner folding screen device, a bar-type device, or the like. The following description will be made taking a bar-type apparatus as an example.

Fig. 8 shows an exemplary structural diagram of an electronic device assembly 1' according to another embodiment of the present application. Referring to fig. 8, the electronic device assembly 1' includes an electronic device 10' and a protective case 20' for the electronic device 10', wherein the electronic device 10' is a bar type device. Specifically, the electronic device 10' includes a screen 12' disposed on a front surface thereof and a housing 11' disposed on a rear surface thereof, the housing 11' being capable of providing support for the screen 12 '. The electronic device 10 'has a fixed form, i.e. the electronic device 10' does not have a folding function. A coil C3 '(as a third coil) is provided in the housing 11'.

The protective sheath 20' includes a housing 21' (as a first housing) and a housing 22' (as a second housing) that are connected to each other. Illustratively, housing 21 'and housing 22' are of unitary construction. In the use state shown in fig. 8 (as an example of the first use state), the case 21 'is fitted over the housing 11' of the electronic apparatus 10', and the case 22' is fitted over the screen 12 'of the electronic apparatus 10'.

The housing 21 'has a coil C1' (as a first coil) and the housing 22 'has a coil C2' (as a second coil). Coil C2' may receive wireless charging of charging dock 30' and may be capable of providing power to coil C1'. The coil C1 'is capable of wirelessly charging the coil C3' in the housing 11 'of the electronic device 10'.

When the electronic device 10' needs to be charged, the electronic device assembly 1' may be placed on the charging dock 30 '. For example, the housing 22 'is attached to the surface of the charging base 30'. At this time, the coil C4 'in the charging base 30' may wirelessly charge the coil C2 'in the housing 22'. When the coil C2' receives the power from the charging base 30', the power may be transferred to the coil C1'. When the coil C1' receives power from the coil C2', the coil C3' can be wirelessly charged. Thus, through the relay action of the coil C2' and the coil C1', the electric energy in the charging base 30' can be transferred to the electronic device 10', thereby realizing wireless charging of the electronic device 10 '.

In the above description of embodiments of the application, unless otherwise indicated, "/" means or, for example, A/B may identify A or B; the term "and/or" herein is merely an association relation describing an association object, and means that three kinds of relations may exist, for example, a and/or B may mean that three kinds of cases of a alone, B alone, a and B simultaneously exist. In addition, in the present embodiment, the value of each data range includes an end value. For example, a=10 to 50, meaning that a may be 10 or 50.

Claims

1. An electronic device protective cover, comprising:

a first housing in which a first coil is disposed;

the second shell is connected with the first shell, a second coil is arranged in the second shell, and the second coil can receive wireless charging of external equipment and can supply power to the first coil;

the first coil can be used for wirelessly charging a third coil arranged in the shell;

the electronic equipment is external folding screen equipment, a screen of the electronic equipment comprises a first screen and a second screen, a shell of the electronic equipment comprises a first shell and a second shell, and the first shell and at least part of areas of the first screen are arranged in a back-to-back mode; when the electronic equipment is in a folding state, the second screen rotates to the opposite sides of the first screen, and the second screen and the first shell are positioned on the same side of the electronic equipment;

in a first use state of the protective sleeve, the electronic equipment is in a folded state, the first shell is sleeved on the first shell of the electronic equipment, and the second shell is sleeved on the second screen of the electronic equipment;

when the electronic equipment is in an unfolding state, the second screen rotates to be positioned on the same side of the electronic equipment as the first screen;

under the second use state of protective sheath, electronic equipment is in the expansion state, first casing cover is established on the first shell of electronic equipment, the second casing cover is established on the second shell of electronic equipment, wherein, first shell with the second shell respectively with the different district of first screen sets up in opposite directions.

2. The protective sleeve of claim 1 wherein said first housing is elongated and said first coil and said third coil are elongated coils.

3. The protective sleeve of claim 1 wherein said first housing and said second housing are of unitary construction.

4. An electronic device assembly comprising an electronic device and a protective sleeve for the electronic device; wherein, the protective sheath includes:

a first housing in which a first coil is disposed;

the second shell is sleeved on a screen of the electronic equipment in a first use state of the protective sleeve, the first shell is sleeved on a shell of the electronic equipment, and the first coil can wirelessly charge a third coil arranged in the shell;

5. The electronic device assembly of claim 4, wherein the first housing is elongated, and the first coil and the third coil are elongated coils.

6. The electronic device assembly of claim 4, wherein the first housing and the second housing are of unitary construction.