Wireless power banks and wireless chargers

Abstract

This application discloses a wireless power bank and a wireless charger. The wireless power bank includes a first housing, a first coil, a first magnet, and a first magnetic attractor. The first housing has a first contact surface, and the first coil is disposed within the first housing corresponding to the first contact surface. The first magnet is movably disposed within the first housing along a first direction, and a second magnet is movably disposed within the first housing along the first direction, with the magnetic poles of the first and second magnets facing opposite directions. When the wireless power bank is in discharge mode, the first magnet moves closer to the first contact surface, and the second magnet moves away from the first contact surface. When the wireless power bank is in charging mode, the first magnet moves away from the first contact surface, and the second magnet moves closer to the first contact surface. Whether the wireless power bank is in contact with a mobile phone or a wireless charging device, magnetic attraction is dominant, allowing the wireless power bank to adapt to different electronic devices and providing good magnetic attraction.

Description

Technical Field

[0001] This application relates to the field of charging technology, and in particular to a wireless power bank and a wireless charger. Background Technology

[0002] In related technologies, wireless chargers or power banks can be magnetically attached to electronic devices such as mobile phones to wirelessly charge them.

[0003] Generally speaking, wireless chargers have a magnetic coil inside, and the magnetic poles of the magnetic coil inside the wireless charger are opposite to those of the magnetic coil inside the phone. Therefore, the wireless charger can magnetically attach to the phone. Similarly, power banks also have a magnetic coil inside, and the magnetic poles of the magnetic coil inside the power bank are also opposite to those of the phone. Therefore, the power bank can magnetically attach to the phone.

[0004] However, since the magnetic poles of the magnetic coil inside the wireless charger and the magnetic coil inside the power bank are opposite to those of the magnetic coil inside the phone, that is, the magnetic poles of the magnetic coil inside the wireless charger and the magnetic coil inside the power bank are the same, the wireless charger and the power bank repel each other, causing the wireless charger to be unable to charge the power bank. Utility Model Content

[0005] This application provides a wireless power bank and a wireless charger. The wireless power bank can be magnetically charged with both a mobile phone and a wireless charger.

[0006] In a first aspect, embodiments of this application provide a wireless power bank, comprising a first housing, a first coil, a first magnet, and a first magnetic attractor. The first housing has a first contact surface for contacting an electronic device. The first coil is disposed within the first housing corresponding to the first contact surface and is used for charging or discharging. The first magnet is movably disposed within the first housing along a first direction, the first direction being the thickness direction of the first coil. A second magnet is movably disposed within the first housing along the first direction. The first magnet and the second magnet are arranged around the outer periphery of the first coil and together form a ring structure. The magnetic poles of the first magnet and the second magnet face opposite directions. The wireless power bank has a charging mode and a discharging mode. When the wireless power bank is in the discharging mode, the first magnet moves closer to the first contact surface, and the second magnet moves away from the first contact surface. When the wireless power bank is in the charging mode, the first magnet moves away from the first contact surface, and the second magnet moves closer to the first contact surface.

[0007] Based on the wireless power bank embodiments of this application, when the electronic device is a mobile phone, the wireless power bank is in discharge mode. The first magnet is magnetically attracted to the mobile phone, and under the action of the magnetic attraction, the first magnet can approach the first contact surface. The second magnet is repelled by the mobile phone, and under the action of the magnetic attraction, the second magnet can move away from the first contact surface. Since the first magnet is closer to the mobile phone and the second magnet is farther away from the mobile phone, the magnetic attraction force is greater than the repulsion force. At this time, the wireless power bank can magnetically attract the mobile phone and act as a transmitter to charge the mobile phone wirelessly. When the electronic device is a wireless charging device, the first magnet is repelled by the wireless charging device, and under the action of the repulsion force, the first magnet can move away from the first contact surface. The second magnet is magnetically attracted to the wireless charging device, and under the action of the magnetic attraction, the second magnet can approach the first contact surface. Since the first magnet is farther away from the wireless charging device and the second magnet is closer to the wireless charging device, the magnetic attraction force is greater than the repulsion force. At this time, the wireless power bank can magnetically attract the wireless charging device, and the wireless charging device acts as a transmitter to charge the wireless power bank wirelessly.

[0008] Secondly, embodiments of this application provide a wireless charger, which includes a second housing, a second coil, a third magnet, and a second magnetic attractor. The second housing has a second contact surface for contacting a discharging or charging device. The second coil is disposed within the second housing corresponding to the second contact surface and is used for discharging. The third magnet is movably disposed within the second housing along a second direction, which is the thickness direction of the second coil. A fourth magnet is movably disposed within the second housing along the second direction, and the third and fourth magnets are arranged around the second coil. The two magnets, together forming a ring structure, have opposite magnetic pole orientations. When the wireless charger comes into contact with the discharge device, the third magnet and the discharge device are magnetically attracted to each other, and the third magnet moves closer to the second contact surface. The fourth magnet repels the discharge device and moves away from the second contact surface. When the wireless charger comes into contact with the charging device, the fourth magnet and the charging device are magnetically attracted to each other and move closer to the second contact surface. The third magnet repels the charging device and moves away from the second contact surface.

[0009] According to the embodiments of this application, when the discharging device comes into contact with the second contact surface of the wireless charger, the third magnet is attracted to the discharging device and moves closer to the second contact surface under the action of magnetic attraction. The fourth magnet repels the discharging device and moves away from the second contact surface under the action of repulsive force. Since the third magnet is closer to the discharging device and the fourth magnet is farther away from the discharging device, the magnetic attraction force is greater than the repulsive force, and the wireless charger can charge the discharging device at this time. When the charging device comes into contact with the second contact surface of the wireless charger, the third magnet repels the charging device and moves away from the second contact surface under the action of repulsive force. The fourth magnet is attracted to the charging device and moves closer to the second contact surface under the action of magnetic attraction. Since the third magnet is farther away from the charging device and the fourth magnet is closer to the charging device, the magnetic attraction force is greater than the repulsive force, and the wireless charger can charge the charging device at this time. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the structure of a wireless power bank in one embodiment of this application;

[0012] Figure 2 This is an exploded view of the wireless power bank in one embodiment of this application;

[0013] Figure 3 This is an exploded view of the wireless power bank in another embodiment of this application;

[0014] Figure 4 This is an exploded view of the wireless power bank in another embodiment of this application;

[0015] Figure 5 This is an exploded view of the wireless power bank in another embodiment of this application;

[0016] Figure 6 This is an exploded view of the wireless charger in one embodiment of this application.

[0017] Explanation of reference numerals in the attached drawings: 100, wireless power bank; 110, first housing; 110a, first contact surface; 110b, first receiving cavity; 110d, first sub-receiving cavity; 110e, second sub-receiving cavity; 110c, second receiving cavity; 110f, third sub-receiving cavity; 110g, fourth sub-receiving cavity; 120, first coil; 130, first magnet; 131, first sub-magnet; 140, second magnet; 141, second sub-magnet; 200, wireless charger; 210, second housing; 210a, second contact surface; 220, second coil; 230, third magnet; 240, fourth magnet; AA, first direction; BB, second direction. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0019] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0020] Furthermore, the use of terms such as "first," "second," etc., in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] Furthermore, the technical solutions of the various embodiments of this application can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this application.

[0023] like Figure 1-4 As shown, the first aspect of this application provides a wireless power bank 100, which includes a first housing 110, a first coil 120, a first magnet 130 and a second magnet 140.

[0024] The first housing 110 has a first abutting surface 110a, which is used to abut against an electronic device, thereby allowing the electronic device to come close to the wireless charging bank 100. The electronic device can be, for example, a mobile phone, wireless earphones, a tablet, or a wireless charging device. The material of the portion of the first housing 110 corresponding to the first abutting surface 110a can be plastic, glass, or other materials that do not shield against magnetic fields. Other parts of the first housing 110 can be plastic, glass, metal, etc., and are not limited thereto.

[0025] Optionally, the first contact surface 110a is a plane, so that the first contact surface 110a can fit with the electronic device, thereby increasing the friction between the first contact surface 110a and the electronic device, and making the first contact surface 110a and the electronic device more firmly attracted.

[0026] Optionally, the first contact surface 110a is a concave-convex surface, thereby creating a gap between the first contact surface 110a and the electronic device to improve the heat dissipation effect of the first housing 110.

[0027] The first coil 120 is disposed within the first housing 110 corresponding to the first contact surface 110a. When the first contact surface 110a contacts the electronic device, the first coil 120 is relatively close to the electronic device, thereby enabling magnetic coupling between the first coil 120 and the electronic device. The first coil 120 is used for charging or discharging, and can function as both a transmitting coil and a receiving coil. When the first contact surface 110a contacts a mobile phone, the wireless power bank 100 wirelessly charges the phone, and the first coil 120 acts as a transmitting coil, generating an alternating magnetic field. When the first contact surface 110a contacts a wireless charger, the wireless charger wirelessly charges the wireless power bank 100, and the first coil 120 acts as a receiving coil, inducing an alternating magnetic field.

[0028] The first magnet 130 is movably disposed within the first housing 110 along a first direction AA, which is the thickness direction of the first coil 120. Generally, to achieve a better charging effect, the first contact surface 110a is approximately parallel to the first coil 120, meaning that the first magnet 130 can move closer to or further away from the first contact surface 110a when moving along the first direction AA. Optionally, the first magnet 130 is made of neodymium iron boron magnet, thus possessing a relatively large magnetic force.

[0029] The second magnet 140 is movably disposed within the first housing 110 along the first direction AA. The magnetic poles of the first magnet 130 and the second magnet 140 face opposite directions. The first magnet 130 and the second magnet 140 are arranged around the outer periphery of the first coil 120, forming a ring structure. That is, the second magnet 140 and the first magnet 130 do not obstruct each other, so that both the second magnet 140 and the first magnet 130 can generate a magnetic force with the electronic device. For example, the inner periphery of the magnetic coil of the electronic device is the N pole and the outer periphery is the S pole. The first magnet 130 and the second magnet 140 are both arranged in an arc shape, with the inner periphery of the first magnet 130 being the S pole and the outer periphery being the N pole, and the inner periphery of the second magnet 140 being the N pole and the outer periphery being the S pole.

[0030] like Figure 3 As shown, when the wireless power bank 100 comes into contact with the mobile phone, the first magnet 130 and the mobile phone are magnetically attracted to each other, and the first magnet 130 moves close to the first contact surface 110a under the action of magnetic attraction. Since the first magnet 130 is close to the mobile phone at this time, the magnetic attraction between the first magnet 130 and the mobile phone is relatively large, and the wireless power bank 100 and the mobile phone are not easy to slide or fall off relative to each other, thereby improving the charging efficiency and charging stability of the wireless power bank 100.

[0031] like Figure 4 As shown, when the wireless power bank 100 comes into contact with the wireless charger, the second magnet 140 and the wireless charging device are magnetically attracted to each other. It can be understood that because the magnetic poles of the wireless charging device and the mobile phone are opposite, the first magnet 130 repels the wireless charging device, and under the action of the repulsive force, the first magnet 130 moves away from the first contact surface 110a, that is, the first magnet 130 moves away from the wireless charging device. Since the distance between the first magnet 130 and the wireless charging device is relatively large at this time, the repulsive force between the first magnet 130 and the wireless charging device is relatively small, and the magnetic attraction between the wireless charging device and the second magnet 140 is large. Therefore, the wireless power bank 100 can be magnetically attracted to the wireless charging device relatively stably, thereby improving the charging efficiency and charging stability of the wireless charger.

[0032] In summary, when the electronic device is a mobile phone, the wireless power bank 100 is in discharge mode. The first magnet 130 is magnetically attracted to the mobile phone and can approach the first contact surface 110a under the action of magnetic attraction. The second magnet 140 is repelled by the mobile phone and can move away from the first contact surface 110a under the action of magnetic attraction. Since the first magnet 130 is closer to the mobile phone and the second magnet 140 is farther away from the mobile phone, the magnetic attraction force is greater than the repulsion force. At this time, the wireless power bank 100 can magnetically attract the mobile phone and act as a transmitter to charge the mobile phone wirelessly. When the electronic device is a wireless charging device, the wireless power bank 100 is in charging mode. The first magnet 130 repels the wireless charging device, and under the action of the repulsive force, the first magnet 130 moves away from the first contact surface 110a. The second magnet 140 is magnetically attracted to the wireless charging device, and under the action of the magnetic attraction, the second magnet 140 moves closer to the first contact surface 110a. Since the first magnet 130 is farther away from the wireless charging device and the second magnet 140 is closer to the wireless charging device, the magnetic attraction force is greater than the repulsive force. At this time, the wireless power bank 100 can be magnetically attracted to the wireless charging device, and the wireless charging device, as the transmitter, charges the wireless power bank 100 wirelessly. Whether the wireless power bank 100 is in contact with a mobile phone or a wireless charging device, the magnetic attraction force is dominant, making the wireless power bank 100 adaptable to different electronic devices and providing good magnetic attraction.

[0033] In some embodiments, the wireless power bank 100 further includes a magnetic shielding component disposed between the second magnet 140 and the first magnet 130. By providing the magnetic shielding component, mutual interference between the second magnet 140 and the first magnet 130 can be reduced, and the first magnet 130 and the second magnet 140 can move more smoothly.

[0034] It should be noted that because devices like mobile phones need to consider thickness and weight, the magnetic coil inside them is relatively thin and the magnetism is relatively weak. Wireless charging devices, on the other hand, have fewer limitations regarding weight and thickness, so the magnetic coil inside them is thicker and the magnetism is relatively stronger.

[0035] Therefore, the first magnet 130 can be relatively thick and have relatively strong magnetism, resulting in a larger magnetic attraction between the wireless power bank 100 and the mobile phone, and a better magnetic attraction effect. Similarly, the second magnet 140 can also be relatively thick, thus increasing the magnetic attraction between the wireless power bank 100 and the wireless charger, and achieving a better magnetic attraction effect.

[0036] In some embodiments, the magnetic force of the first magnet 130 is greater than that of the second magnet 140. Since the magnetism of a mobile phone is generally relatively weak, while the magnetism of a wireless charging device is relatively strong, the magnetic force of the first magnet 130 is set to be greater than that of the second magnet 140, thereby making the magnetic attraction between the wireless power bank 100 and the mobile phone and the magnetic attraction between the wireless power bank 100 and the wireless charging device more similar.

[0037] In some embodiments, the volume of the first magnet 130 is larger than the volume of the second magnet 140. Generally speaking, the larger the volume, the greater the magnetic force, thereby making the magnetic force of the first magnet 130 greater than that of the second magnet 140.

[0038] In some embodiments, the magnetic field strength of the first magnet 130 is greater than that of the second magnet. Generally speaking, the greater the magnetic field strength, the greater the magnetic force, thereby making the magnetic force of the first magnet 130 greater than that of the second magnet 140.

[0039] like Figure 3 and Figure 4 As shown, in some embodiments, the first housing 110 has a first receiving cavity 110b and a second receiving cavity 110c that are independent of each other, the first magnet 130 is slidably disposed in the first receiving cavity 110b, and the second magnet 140 is slidably disposed in the second receiving cavity 110c.

[0040] By providing the first receiving cavity 110b, the first magnet 130 can be protected, and the first magnet 130 can be limited by the first receiving cavity 110b to prevent the first magnet 130 from falling out of the housing.

[0041] By providing a second receiving cavity 110c, the second magnet 140 can be protected, and the second magnet 140 can be limited by the second receiving cavity 110c to prevent the second magnet 140 from detaching from the housing.

[0042] Furthermore, the first magnet 130 and the second magnet 140 move within their respective chambers, and the first magnet 130 and the second magnet 140 will not interfere with or collide with each other during the movement, which makes the overall structure of the wireless power bank 100 more stable and reliable.

[0043] In some embodiments, the vacuum degree of the first receiving cavity 110b is greater than zero, thereby reducing the air resistance experienced by the first magnet 130 during movement and allowing for a smaller gap between the first magnet 130 and the first receiving cavity 110b, resulting in a closer fit between the first magnet 130 and the first receiving cavity 110b and smoother movement of the first magnet 130.

[0044] In some embodiments, the vacuum degree of the second receiving cavity 110c is greater than zero, thereby reducing the air resistance experienced by the second magnet 140 during movement, and the gap between the second magnet 140 and the second receiving cavity 110c can be smaller, thereby making the second magnet 140 fit more closely to the second receiving cavity 110c, and making the second magnet 140 move more smoothly.

[0045] In some embodiments, a first magnetic powder is provided in the first receiving cavity 110b. The first magnetic powder can play a lubricating role, which can reduce the friction between the first magnet 130 and the inner wall of the first receiving cavity 110b, thereby reducing the resistance between the first magnet 130 and the inner wall of the first receiving cavity 110b, so that the first magnet 130 moves more quietly and smoothly.

[0046] In some embodiments, a second magnetic powder is provided in the second receiving cavity 110c. The second magnetic powder can play a lubricating role, which can reduce the friction between the second magnet 140 and the inner wall of the second receiving cavity 110c, thereby reducing the resistance between the second magnet 140 and the inner wall of the second receiving cavity 110c, so that the second magnet 140 moves more quietly and smoothly.

[0047] In some embodiments, a first diaphragm is provided at one end of the first receiving cavity 110b near the first abutting surface 110a and at the other end away from the first abutting surface 110a. When the first magnet 130 moves to the end of the first receiving cavity 110b near the first abutting surface 110a and the other end away from the first abutting surface 110a, the first magnet 130 collides with the first diaphragm, thereby emitting a specific sound. The user can feel the movement of the first magnet 130 through the sound, thereby enhancing the interaction between the wireless power bank 100 and the user.

[0048] In some embodiments, a second diaphragm is provided at one end of the second receiving cavity 110c near the first abutting surface 110a and at the other end away from the first abutting surface 110a. When the second magnet 140 moves to the end of the second receiving cavity 110c near the first abutting surface 110a and the other end away from the first abutting surface 110a, the second magnet 140 collides with the second diaphragm, thereby emitting a specific sound. The user can feel the movement of the second magnet 140 through the sound, thereby enhancing the interaction between the wireless power bank 100 and the user.

[0049] like Figures 3-5 As shown, in some embodiments, the first magnet 130 includes at least two first sub-magnets 131, and the second magnet 140 includes at least two second sub-magnets 141, wherein the number of first sub-magnets 131 is the same as the number of second sub-magnets 141, or the number of first sub-magnets 131 is greater than the number of second sub-magnets 141.

[0050] The first sub-magnet 131 and the second sub-magnet 141 are arranged sequentially and at intervals around the periphery of the first coil 120, so that the first sub-magnet 131 and the second sub-magnet 141 are relatively evenly distributed, thereby making the magnetic attraction force more uniform.

[0051] In some embodiments, the first housing 110 has a first receiving cavity 110b and a second receiving cavity 110c that are independent of each other. The first receiving cavity 110b includes a first sub-receiving cavity 110d and a second sub-receiving cavity 110e that are disposed opposite to each other. A portion of the first sub-magnets 131 are slidably disposed in the first sub-receiving cavity 110d, and another portion of the first sub-magnets 131 are slidably disposed in the second sub-receiving cavity 110e. This allows the multiple first sub-magnets 131 to be relatively dispersed, resulting in relatively good magnetic attraction uniformity.

[0052] The second receiving cavity 110c includes a third sub-receiving cavity 110f and a fourth sub-receiving cavity 110g arranged opposite to each other. A portion of the second sub-magnets 141 are slidably disposed in the third sub-receiving cavity 110f, and another portion of the second sub-magnets 141 are slidably disposed in the fourth sub-receiving cavity 110g. This allows the multiple second sub-magnets 141 to be relatively dispersed, resulting in relatively good magnetic attraction uniformity.

[0053] In some embodiments, the wireless power bank 100 may also include components such as a battery, a charge / discharge management module, an output terminal or an output cable, etc. The battery is electrically connected to the first coil. The above can be referred to the prior art, and will not be described in detail in this embodiment.

[0054] like Figure 6 As shown, a second aspect of this application provides a wireless charger 200, which includes a second housing 210, a second coil 220, a third magnet 230, and a fourth magnet 240.

[0055] The second housing 210 has a second contact surface 210a, which is used to contact the discharging device or the charging device, thereby allowing the discharging device or the charging device to come into close contact with the wireless charger 200. The part of the second housing 210 corresponding to the second contact surface 210a can be made of materials such as plastic or glass that do not have a shielding effect on magnetic fields. Other parts of the second housing 210 can be made of plastic, glass, metal, etc., and are not limited here.

[0056] The discharge device can be, for example, a mobile phone, a tablet, a wireless headset, etc., and the charging device can be, for example, a power bank, etc.

[0057] Optionally, the second abutting surface 210a is a plane, so that the second abutting surface 210a can fit with the discharging device or the charging device, thereby increasing the friction between the second abutting surface 210a and the discharging device or the charging device, and making the first abutting surface 110a more firmly attracted to the discharging device or the charging device.

[0058] Optionally, the second contact surface 210a is a concave-convex surface, so that there is a gap between the second contact surface 210a and the discharge device or the charging device, thereby improving the heat dissipation effect of the second housing 210.

[0059] The second coil 220 is disposed within the second housing 210 corresponding to the second contact surface 210a. When the second contact surface 210a contacts the discharging device or the charging device, the second coil 220 is relatively close to the discharging device or the charging device, thereby enabling magnetic coupling between the second coil 220 and the discharging device or the charging device. The second coil 220 serves as a discharging coil, used to generate an alternating magnetic field. When the second contact surface 210a contacts the discharging device, the wireless charger 200 wirelessly charges the discharging device. When the second contact surface 210a contacts the charging device, the wireless charger 200 wirelessly charges the charging device.

[0060] The third magnet 230 is movably disposed within the second housing 210 along the second direction BB, which is the thickness direction of the second coil 220. Generally, to achieve a better charging effect, the second contact surface 210a is approximately parallel to the second coil 220, meaning that the third magnet 230 can move closer to or further away from the second contact surface 210a as it moves along the second direction BB. Optionally, the third magnet 230 is made of neodymium iron boron magnet, thus possessing a relatively large magnetic force.

[0061] The fourth magnet 240 is movably disposed within the second housing 210 along the second direction BB. The third magnet 230 and the fourth magnet 240 are arranged around the outer periphery of the second coil 220, forming a ring structure together. That is, the fourth magnet 240 and the third magnet 230 do not obstruct each other, thus enabling both to generate magnetic forces with the discharge device and with the charging device. Optionally, the fourth magnet 240 is made of neodymium iron boron magnet, thereby possessing a relatively large magnetic force.

[0062] When the wireless charger 200 comes into contact with the discharge device, the third magnet 230 and the discharge device are magnetically attracted to each other. Under the action of the magnetic attraction, the third magnet 230 moves closer to the second contact surface 210a. Since the third magnet 230 is closer to the discharge device at this time, the magnetic attraction between the third magnet 230 and the discharge device is relatively large. The wireless charger 200 and the discharge device are not easy to slide or fall off relative to each other, thereby improving the charging efficiency and charging stability of the wireless charger 200.

[0063] When the wireless charger 200 comes into contact with the charging device, the fourth magnet 240 and the charging device are magnetically attracted to each other. It can be understood that, since the magnetic poles of the charging device and the discharging device are opposite, the third magnet 230 repels the charging device, and under the action of the repulsive force, the third magnet 230 moves away from the second contact surface 210a, that is, the third magnet 230 moves away from the charging device. Because the distance between the third magnet 230 and the charging device is relatively large at this time, the repulsive force between the third magnet 230 and the charging device is relatively small, and the magnetic attraction between the charging device and the fourth magnet 240 is relatively large. The wireless charger 200 can be magnetically attracted to the charging device relatively stably, thereby improving the charging efficiency and charging stability of the charging device.

[0064] In summary, when the discharge device comes into contact with the second contact surface 210a of the wireless charger 200, the third magnet 230 is attracted to the discharge device and can approach the second contact surface 210a under the action of magnetic attraction. The fourth magnet 240 is repelled by the discharge device and can move away from the second contact surface 210a under the action of repulsive force. Since the third magnet 230 is closer to the discharge device and the fourth magnet 240 is farther away from the discharge device, the magnetic attraction force is greater than the repulsive force. At this time, the wireless charger 200 can charge the discharge device. When the charging device comes into contact with the second contact surface 210a of the wireless charger 200, the third magnet 230 repels the charging device and moves away from the second contact surface 210a under the action of the repulsive force. The fourth magnet 240 is attracted to the charging device and moves closer to the second contact surface 210a under the action of the magnetic attraction force. Since the third magnet 230 is farther away from the charging device and the fourth magnet 240 is closer to the charging device, the magnetic attraction force is greater than the repulsive force. At this time, the wireless charger 200 can charge the charging device.

[0065] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A wireless power bank, characterized in that, include: A first housing has a first abutting surface for contacting an electronic device; A first coil is disposed inside the first housing corresponding to the first contact surface, and the first coil is used for charging or discharging. A first magnet is movably disposed within the first housing along a first direction, the first direction being the thickness direction of the first coil; The second magnet is movably disposed within the first housing along the first direction. The first magnet and the second magnet are arranged around the outer periphery of the first coil and together form a ring structure. The magnetic poles of the first magnet and the second magnet face opposite directions. The wireless power bank has a charging mode and a discharging mode. When the wireless power bank is in the discharging mode, the first magnet moves closer to the first contact surface, and the second magnet moves away from the first contact surface. When the wireless power bank is in the charging mode, the first magnet moves away from the first contact surface, and the second magnet moves closer to the first contact surface.

2. The wireless power bank of claim 1, wherein, The magnetic force of the first magnet is greater than that of the second magnet; and / or The volume of the first magnet is larger than the volume of the second magnet; and / or The magnetic field strength of the first magnet is greater than that of the second magnet. 3.The wireless power bank of claim 1, wherein, The first housing has a first accommodating cavity and a second accommodating cavity that are independent of each other. The first magnet is slidably disposed in the first accommodating cavity, and the second magnet is slidably disposed in the second accommodating cavity.

4. The wireless power bank of claim 3, wherein, The vacuum level of the first receiving cavity is greater than zero to reduce the moving resistance of the first magnet; and / or, the vacuum level of the second receiving cavity is greater than zero to reduce the moving resistance of the second magnet.

5. The wireless power bank of claim 3, wherein, The first receiving cavity is provided with first magnetic powder to reduce the moving resistance of the first magnet; and / or, the second receiving cavity is provided with second magnetic powder to reduce the moving resistance of the second magnet.

6. The wireless power bank of claim 3, wherein, A first diaphragm is provided at one end of the first receiving cavity near the first abutting surface and at the other end away from the first abutting surface. The first magnet can produce sound when it collides with the first diaphragm; and / or A second diaphragm is provided at one end of the second receiving cavity near the first abutting surface and at the other end away from the first abutting surface. The second magnet can make a sound when it collides with the second diaphragm.

7. The wireless power bank of claim 1, wherein, The first magnet includes at least two first sub-magnets, and the second magnet includes at least two second sub-magnets, wherein the number of first sub-magnets is the same as the number of second sub-magnets, or the number of first sub-magnets is greater than the number of second sub-magnets; The first sub-magnet and the second sub-magnet are arranged alternately around the periphery of the first coil. 8.The wireless power bank of claim 7, wherein, The first housing has a first receiving cavity and a second receiving cavity that are independent of each other. The first receiving cavity includes a first sub-receiving cavity and a second sub-receiving cavity that are arranged opposite to each other. The second receiving cavity includes a third sub-receiving cavity and a fourth receiving cavity that are arranged opposite to each other. A portion of the first sub-magnets is slidably disposed in the first sub-receiving cavity, and another portion of the first sub-magnets is slidably disposed in the second sub-receiving cavity; a portion of the second sub-magnets is slidably disposed in the third sub-receiving cavity, and another portion of the second sub-magnets is slidably disposed in the fourth sub-receiving cavity.

9. The wireless charging bank according to claim 1, characterized in that, The wireless power bank also includes a magnetic shielding component, which is disposed between the second magnet and the first magnet.

10. A wireless charger, comprising: include: The second housing has a second abutting surface for contacting a discharge device or a charging device; The second coil is disposed inside the second housing corresponding to the second contact surface, and the second coil is used for discharging. The third magnet is movably disposed within the second housing along a second direction, which is the thickness direction of the second coil; The fourth magnet is movably disposed within the second housing along the second direction. The third magnet and the fourth magnet are arranged around the outer periphery of the second coil and together form a ring structure. The magnetic poles of the third magnet and the fourth magnet face opposite directions. When the wireless charger comes into contact with the discharge device, the third magnet and the discharge device are magnetically attracted to each other, and the third magnet moves closer to the second contact surface. The fourth magnet repels the discharge device and moves away from the second contact surface. When the wireless charger comes into contact with the charging device, the fourth magnet and the charging device are magnetically attracted to each other, and the fourth magnet moves closer to the second contact surface. The third magnet repels the charging device and moves away from the second contact surface.

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