A wireless charging device and a wireless charging base

Abstract

The application discloses a wireless charging device and a wireless charging base, which comprise a positioning mechanism and at least two transmitting coils; the at least two transmitting coils correspond to at least two electronic devices one by one; each transmitting coil performs wireless charging on the corresponding electronic device; each transmitting coil is connected with or overlaps with each charging area formed by a charging plane; the positioning mechanism drives each transmitting coil to be positioned with a receiving coil in the corresponding electronic device, and the transmitting coil performs wireless charging on the corresponding electronic device. The charging areas formed by the transmitting coils are continuous, the charging areas covered by the transmitting coils are not spaced apart to form a continuous charging plane, that is, the multiple transmitting coils form a relatively large charging area. The transmitting coils in the wireless charging device can move, so that the positioning with the receiving coils in the electronic devices can be automatically realized, the electronic devices can be charged at any time, and the freedom of wireless charging is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless charging, in particular to a wireless charging device and a wireless charging base. BACKGROUND

[0002] Wireless charging technology (WCT) uses electric field, magnetic field, microwave or laser as a transmission medium to realize wireless transmission of electric energy. Due to its advantages such as no wire restriction and no plugging, the wireless charging technology is increasingly applied in electronic devices. At present, more and more electronic devices use wireless charging devices for wireless charging. For example, the electronic devices can be mobile phones and wearable devices. The wireless charging device includes a transmitting coil, and the electronic device includes a receiving coil.

[0003] At present, the wireless charging technology transmits energy through magnetic field coupling between the transmitting coil and the receiving coil. The transmitting coil and the receiving coil need to be located within a certain spatial distance. For example, when the electronic device is a mobile phone or a wearable device, the electronic device is placed on the wireless charging device, which may not be able to align the positions of the transmitting coil and the receiving coil, and thus may not be able to charge or the charging efficiency is low. SUMMARY

[0004] The present application provides a wireless charging device and a wireless charging base, which can realize automatic alignment of the transmitting coil and the receiving coil, realize wireless charging as placed, and improve the degree of freedom.

[0005] The present application provides a wireless charging device, which can be a one-to-many charging device and can simultaneously charge at least two electronic devices. The wireless charging device includes an alignment mechanism and at least two transmitting coils. Each transmitting coil is used to charge a corresponding electronic device. One transmitting coil corresponds to one electronic device, i.e., for the same electronic device, only one transmitting coil is used for wireless charging. Each transmitting coil in the at least two transmitting coils forms a corresponding charging area on a charging plane. The charging areas corresponding to adjacent two transmitting coils are connected to each other or overlap, i.e., there is no interval, so that the surface of the wireless charging device forms a large continuous charging area. The electronic device can be placed randomly, and as long as it is in the continuous large charging area, wireless charging can be realized, and the charging degree of freedom is improved. The charging plane is located on the surface of the wireless charging device for placing the electronic device. Each transmitting coil can be located on the same plane or different planes, but the planes where all the transmitting coils are located are parallel to each other. The alignment mechanism drives each transmitting coil in the at least two transmitting coils to align with the receiving coil of a different receiving device in the at least two electronic devices, so that the transmitting coil charges the corresponding electronic device.

[0006] Since the wireless charging device provided by the embodiment of the present application corresponds to one electronic device respectively when wireless charging, the size of the transmitting coil can be relatively large, and the charging power is increased. In addition, the charging areas formed by the transmitting coils are continuous, that is, there is no interval, so that the electronic device does not have to be placed in a certain range to be charged, but the position of the receiving coil in the electronic device can be automatically detected, so that the alignment mechanism drives one of the transmitting coils to align with the receiving coil of the electronic device, to realize real charging as placed, increase the charging freedom, and improve the charging experience of the user.

[0007] The wireless charging device provided by the embodiment of the present application only needs to ensure that the charging areas formed by the transmitting coils are continuous, and does not require the projections of the center alignment areas corresponding to the transmitting coils on the charging plane to be continuous, that is, they can be continuous or have a certain interval. For example, the projections of the center alignment areas corresponding to the adjacent two of the at least two transmitting coils on the charging plane have no overlap; the center alignment area is an area in which the centers of the at least two transmitting coils can align with the centers of the receiving coils of different receiving devices in the at least two electronic devices corresponding to the at least two transmitting coils. Another possible implementation manner is that the projections of the center alignment areas corresponding to the adjacent two of the at least two transmitting coils on the charging plane have overlap; the center alignment area is an area in which the centers of the at least two transmitting coils can align with the centers of the receiving coils of different receiving devices in the at least two electronic devices corresponding to the at least two transmitting coils.

[0008] Generally, the alignment mechanism at least includes a motor, and generally two motors corresponding to each transmitting coil can drive the transmitting coil to move in the X-axis direction and the Y-axis direction. The motors in the alignment mechanism provided by the embodiment of the present application can be divided into two categories: the first category is that the motor is fixed, and the second category is that the motor can move.

[0009] The implementation case of the motor being fixed will be introduced first.

[0010] For different implementation cases of the motor, the number of the alignment mechanism is the same as that of the transmitting coil and one-to-one correspondence, that is, the alignment mechanism includes at least two, and the at least two transmitting coils and the at least two alignment mechanisms are one-to-one correspondence; each alignment mechanism includes: a first motor and a second motor; the first motor is used to drive the corresponding transmitting coil to move along a first direction; the second motor is used to drive the corresponding transmitting coil to move along a second direction; the first direction is perpendicular to the second direction.

[0011] Each alignment mechanism further comprises: a first guide rod, a second guide rod, a first screw rod, a second screw rod, and a coil supporting slider; the first screw rod and the second screw rod are vertically arranged, the first guide rod and the second guide rod are vertically arranged, the first screw rod is arranged along a first direction, and the second screw rod is arranged along a second direction; the coil supporting slider is sleeved at the intersection of the first guide rod and the second guide rod; the coil supporting slider is used for supporting a corresponding transmitting coil; a first motor is fixed at one end of the first screw rod, the first guide rod is sleeved on the first screw rod, and the first motor drives the first guide rod to move along the first screw rod; a second motor is fixed at one end of the second screw rod, the second guide rod is sleeved on the second screw rod, and the second motor drives the second guide rod to move along the second screw rod.

[0012] In order to make the movement of the first guide rod more stable and the movement of the transmitting coil more accurate, each alignment mechanism further comprises: a support rod; for each alignment mechanism: the support rod is arranged in parallel with the first screw rod; a first end of the first guide rod is sleeved on the first screw rod, and a second end of the first guide rod is sleeved on the support rod. The above support rod is arranged in parallel with the first screw rod, and in addition, the support rod can also be arranged in parallel with the second screw rod, at this time, the support rod is used to stabilize the movement of the second guide rod, and the embodiments of the present application are not limited in this regard. Each alignment mechanism can also comprise two guide rods, provided that the space is large enough, the arrangement of other components is not affected, and the movement does not interfere with each other.

[0013] In one possible implementation, in order to place the transmitting coil, each alignment mechanism further comprises: a tray; the tray is arranged on each coil supporting slider, and the tray is used to carry a corresponding transmitting coil.

[0014] In the embodiments of the present application, whether the various alignment mechanisms are located in the same layer layout or are stacked in layers, or are located in the same layer layout is not limited.

[0015] In a first possible implementation, at least two alignment mechanisms are located in the same plane. When a plurality of alignment mechanisms are located in the same plane, i.e., in the same layer layout, the center alignment areas corresponding to the various transmitting coils can have a gap due to an obstacle.

[0016] In a second possible implementation, the at least two transmitting coils comprise at least three, and the at least two alignment mechanisms comprise at least the following three: a first alignment mechanism, a second alignment mechanism, and a third alignment mechanism; the first alignment mechanism, the second alignment mechanism, and the third alignment mechanism are arranged in sequence along a first direction; the first alignment mechanism and the third alignment mechanism are located at a first height in the vertical direction; the second alignment mechanism is located at a second height in the vertical direction; the first height and the second height are different; since the two adjacent alignment mechanisms are stacked in layers, it can be achieved that there is no gap between the projections of the center alignment areas corresponding to two adjacent transmitting coils in the at least two transmitting coils on the charging plane.

[0017] The second type is introduced below, which is the implementation case of the motor that can move.

[0018] At this time, the alignment mechanism is no longer distinguished by the number but as a whole, that is, including: N first motors, N second motors, a first screw rod and N second screw rods; N is the number of at least two transmitting coils, N is an integer greater than or equal to 2; N first motors are movably sleeved on the first screw rod; N second motors correspond to N second screw rods one by one, and each second motor is movably sleeved on the corresponding second screw rod; N second motors respectively place the corresponding transmitting coils thereon; N second screw rods are arranged perpendicularly to the first screw rod, and N second screw rods correspond to N first motors one by one, and each second screw rod is fixedly connected to the corresponding first motor.

[0019] The moving mode of the motor that can move can at least include the following two modes:

[0020] The first possible implementation mode is that each first motor has no intersection between the corresponding moving ranges on the first screw rod. For this non-intersection scheme, there can be a gap between the corresponding center alignment areas of each transmitting coil.

[0021] The second possible implementation mode is that each first motor has intersection between the corresponding moving ranges on the first screw rod. For this intersection scheme, since the moving range of each first motor is large, the corresponding center alignment areas of each transmitting coil can be seamlessly connected without gap, that is, there is an overlapping area.

[0022] In order to make the movement of each motor more stable, one possible implementation mode is that the alignment mechanism further includes a first guide rod and N second guide rods; the first guide rod is arranged in parallel with the first screw rod, and the N second guide rods are arranged in parallel one by one corresponding to the N second screw rods; N second motors correspond to N second guide rods one by one; N first motors are movably sleeved on the first guide rod; each second motor is movably sleeved on the corresponding second guide rod.

[0023] In order to N second support guide rods and N second screw rods, one possible implementation mode is that the alignment mechanism can further include: a third guide rod arranged in parallel with the first guide rod; N sliders are arranged on the third guide rod; N sliders correspond to N second guide rods one by one; N sliders correspond to N second screw rods one by one; each second screw rod and each second guide rod are connected to the corresponding slider.

[0024] Generally, the transmitting coils are arranged on the trays, and therefore, in a possible implementation, the alignment mechanism further includes: N trays; the N trays correspond to the N second motors one by one; each tray is arranged on a corresponding second motor, and each tray is configured to carry a corresponding transmitting coil. In addition, a sliding block can be further included, the sliding block is arranged on the second motor, the tray is arranged on the sliding block, and the sliding block is fixedly connected with the tray.

[0025] In a possible implementation, the heights of the N trays are adjustable, so that at least two transmitting coils are located in different planes. When the sliding block is included, the height of the sliding block can be adjusted. Since the sliding block is fixedly connected with the tray, when the height of the sliding block is changed, the height of the tray is changed, thereby affecting the height of the corresponding transmitting coil. In this way, the transmitting coil can not be disturbed by other components when moving.

[0026] In a possible implementation, the wireless charging device further includes: a circuit board; and the circuit board can include the following three layouts.

[0027] Firstly, the alignment mechanism and the circuit board are arranged in a vertical direction, and the vertical direction is a direction perpendicular to the charging plane.

[0028] Secondly, the circuit board and the alignment mechanism are located in the same layer, and the circuit board and the alignment mechanism are arranged side by side.

[0029] Thirdly, the circuit board and the alignment mechanism are located in the same layer, and the circuit board surrounds the periphery of the alignment mechanism.

[0030] Since the wireless charging device provided in the embodiments of the present application is a one-to-many charging device, when charging multiple electronic devices, multiple transmitting coils generate heat, and therefore, heat dissipation is crucial for the one-to-many charging device. In a possible implementation, the wireless charging device further includes: an upper shell and a flat plate; the flat plate is arranged vertically below the upper shell; the upper shell and the flat plate are arranged in parallel; the flat plate is provided with a ventilation hole; a gap layer is arranged between the upper shell and the flat plate; a ventilation channel is arranged on a side surface of the wireless charging device and corresponds to the position of the gap layer; cold air enters the gap layer from the ventilation channel, enters the inner cavity of the wireless charging device through the ventilation hole on the flat plate, and dissipates heat for the transmitting coils.

[0031] In addition, in order to limit or indicate the electronic devices, in a possible implementation, the outer surface of the upper shell of the wireless charging device can be provided with N recesses, N is the number of transmitting coils, and N is an integer greater than or equal to 2; the N recesses are configured to limit the electronic devices with a size smaller than the size of the recesses; and the recesses are further configured to indicate the placement position of the electronic devices with a size greater than the size of the recesses when the electronic devices are wirelessly charged.

[0032] In addition, in order to control the operation of the alignment mechanism, in a possible implementation, the wireless charging device further comprises a controller, and the alignment mechanism is configured to drive each of the N transmitting coils to align with the receiving coil of a different receiving device among the at least two electronic devices. The controller can detect the position of the receiving coil in each of the electronic devices, and thus control the alignment mechanism to drive each of the transmitting coils to align with the corresponding receiving coil.

[0033] Based on the wireless charging device provided in the above embodiments, the embodiments of the present application further provide a wireless charging base for wirelessly charging at least two electronic devices, comprising a power interface, an upper cover, a lower cover, an alignment mechanism, and at least two transmitting coils; the alignment mechanism and the at least two transmitting coils are located in a cavity formed by the upper cover and the lower cover; the power interface is arranged on one side of the cavity; the power interface is configured to connect to direct current transmitted by an adapter; each of the transmitting coils corresponds to an electronic device; each of the at least two transmitting coils forms a corresponding charging area on a charging plane, and the charging areas corresponding to two adjacent transmitting coils are connected to each other or overlap; the charging plane is located on a side of the wireless charging device on which the electronic devices are placed, and the alignment mechanism is configured to drive each of the at least two transmitting coils to align with the receiving coil of a different receiving device among the at least two electronic devices, so that the transmitting coils wirelessly charge the corresponding electronic devices.

[0034] In a possible implementation, the at least two transmitting coils include N transmitting coils, and the N transmitting coils simultaneously wirelessly charge N different electronic devices.

[0035] As can be seen from the above technical solutions, the embodiments of the present application have the following advantages:

[0036] The wireless charging device provided in the embodiments includes N transmitting coils, N being an integer greater than or equal to 2, that is, the wireless charging device can simultaneously wirelessly charge multiple electronic devices. The transmitting coils correspond one-to-one to the receiving coils in the electronic devices, that is, one transmitting coil is responsible for charging only the electronic device that is aligned with the transmitting coil. In addition, each of the transmitting coils in the wireless charging device can move under the drive of the alignment mechanism, so as to align with the receiving coil in the corresponding electronic device, thereby improving the charging efficiency. The wireless charging device provided in the embodiments of the present application has each of the transmitting coils connected to each other or overlapping between the charging areas formed by the charging plane, that is, continuous with each other, that is, there is no interval between the charging areas covered by each of the transmitting coils, and a continuous charging plane can be formed, that is, multiple transmitting coils form a relatively large charging area, so that the electronic devices can be wirelessly charged as they are placed, and the degree of freedom of wireless charging is increased. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1A schematic diagram of a wireless charging device provided by an embodiment of the present application;

[0038] Figure 2 A schematic diagram of a charging area of a wireless charging device provided by an embodiment of the present application;

[0039] Figure 3 A schematic diagram of a wireless charging device provided by another embodiment of the present application;

[0040] Figure 4 A schematic diagram of a wireless charging device provided by an embodiment of the present application corresponding to Figure 3 a plurality of transmitting coils;

[0041] Figure 5 A schematic diagram of a wireless charging device provided by another embodiment of the present application;

[0042] Figure 6 A side view of three alignment mechanisms provided by an embodiment of the present application;

[0043] Figure 7 A perspective view of a wireless charging device provided by another embodiment of the present application;

[0044] Figure 8 A schematic diagram of a wireless charging device provided by another embodiment of the present application;

[0045] Figure 9 A schematic diagram of a wireless charging device provided by an embodiment of the present application corresponding to Figure 7 a plurality of transmitting coils;

[0046] Figure 10 A schematic diagram of a charging area formed by three transmitting coils provided by an embodiment of the present application without spacing between projections of the charging area;

[0047] Figure 11 A schematic diagram of a central alignment area corresponding to three transmitting coils provided by an embodiment of the present application with overlapping projections;

[0048] Figure 12 An exploded view of a wireless charging device provided by an embodiment of the present application;

[0049] Figure 13 A schematic diagram of an alignment mechanism and a circuit board side by side provided by an embodiment of the present application;

[0050] Figure 14 A schematic diagram of a circuit board surrounding an alignment mechanism provided by an embodiment of the present application;

[0051] Figure 15 A top view of an upper housing provided by an embodiment of the present application;

[0052] Figure 16Another top view of an upper housing provided by an embodiment of the present application;

[0053] Figure 17 Another top view of an upper housing provided by an embodiment of the present application;

[0054] Figure 18 A schematic view of a heat dissipation part provided by an embodiment of the present application;

[0055] Figure 19 A side view of a heat dissipation part of a wireless charging device provided by an embodiment of the present application;

[0056] Figure 20 A side view of a corresponding adjacent side provided by an embodiment of the present application. Figure 19 A side view of a corresponding adjacent side provided by an embodiment of the present application. DETAILED DESCRIPTION

[0057] The terms "first", "second", etc. in the following description are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0058] In addition, in the embodiments of the present application, the orientation terms such as "upper", "lower", etc. can include but are not limited to the orientation defined by the relative placement of the components in the drawings, and it should be understood that these directional terms can be relative concepts, which are used for relative description and clarification, and can be changed accordingly according to the change of the placement of the components in the drawings.

[0059] In the embodiments of the present application, unless otherwise specified and limited, the term "connection" should be understood in a broad sense, for example, "connection" can be fixed connection, or detachable connection, or integral; can be directly connected, or indirectly connected through an intermediate medium. In addition, the term "coupling" can be an electrically connected manner for realizing signal transmission. "Coupling" can be direct electrical connection, or indirect electrical connection through an intermediate medium.

[0060] The embodiments of the present application relate to a wireless charging device for wireless charging of electronic devices, wherein the wireless charging device can be connected to a power source, for example, the wireless charging device has a Type C interface, one end of the Type C interface is connected to an adapter, and the other end of the adapter is connected to a mains power supply, for example, an alternating current of 220V. The wireless charging device includes a transmitting coil, and the electronic device includes a receiving coil. The power source supplies power to the transmitting coil in the wireless charging device. When the electronic device is close to the wireless charging device, the electromagnetic field of the transmitting coil is coupled by the receiving coil, so that the energy coupled by the receiving coil can be converted to charge the battery in the electronic device.

[0061] The embodiments of the present application do not specifically limit the type of electronic device, for example, the electronic device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a smart wearable product (for example, a smart watch, a smart bracelet, a headset, etc.), a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, etc.

[0062] Referring to Figure 1 , the figure is a schematic diagram of a wireless charging device provided by the embodiments of the present application.

[0063] Figure 1 In the embodiment, the wireless charging device 1000 is only in a planar form, that is, the wireless charging device can be placed flat on the desktop when it is working. In addition, the wireless charging device 1000 provided by the embodiments of the present application can also be in a three-dimensional form, for example, it can be placed on the desktop in other postures through a support.

[0064] Figure 1 In the embodiment, the wireless charging device 1000 is used to charge three different types of electronic devices at the same time, and the three different types of electronic devices are a mobile phone P, a watch W and a headset E. It should be understood that the wireless charging device 1000 can also be used to wirelessly charge three electronic devices of the same type at the same time, for example, three mobile phones.

[0065] Figure 1 In the embodiment, the appearance of the wireless charging device is taken as an example of an oval shape, and the embodiments of the present application do not limit the appearance of the wireless charging device, which can be circular, rectangular, etc. In addition, the wireless charging device can also be in a three-dimensional shape.

[0066] Traditional one-to-many wireless charging device is only to integrate multiple chargers in a shell simply, and the transmitting coil cannot be moved, that is, the transmitting coil cannot be aligned with the receiving coil in the electronic device, and cannot realize charging while placing. In addition, another traditional one-to-many wireless charging device includes many transmitting coils, and the many transmitting coils are arranged in an array, and when the electronic device is placed on the wireless charging device, several transmitting coils are selected from the array to charge the electronic device. Since the array type transmitting coil has many transmitting coils, the charging area corresponding to a single transmitting coil is small, the charging power is low, and the charging efficiency is low.

[0067] In order to solve the technical problems of wireless charging and charging efficiency, the wireless charging device provided by the embodiment of the present application can simultaneously charge multiple electronic devices, that is, the wireless charging device is a one-to-many wireless charging device. The wireless charging device can include N transmitting coils, and N is an integer greater than or equal to 2. The transmitting coils correspond one-to-one to the receiving coils in the electronic devices. The transmitting coils in the wireless charging device can charge the corresponding electronic devices respectively. For example, a mobile phone, a watch and a Bluetooth earphone box can be charged simultaneously. The Bluetooth earphone box includes a battery, which can charge the Bluetooth earphone. The wireless charging device provided by the embodiment of the present application does not limit the number of electronic devices that can be charged simultaneously, for example, two electronic devices can be charged simultaneously, or three electronic devices can be charged simultaneously. It should be understood that the wireless charging device can also charge only one electronic device, and the remaining transmitting coils are idle.

[0068] Embodiment one of the device:

[0069] The wireless charging device provided by the embodiment is used for wireless charging of at least two electronic devices, and the wireless charging device includes an alignment mechanism and at least two transmitting coils. The at least two transmitting coils correspond one-to-one to the at least two electronic devices, and each transmitting coil is used for wireless charging of the corresponding electronic device. The charging area formed by each transmitting coil in the at least two transmitting coils is continuous between the projections on the charging plane. The charging plane is located on the surface of the wireless charging device for placing the electronic device. The alignment mechanism is used to drive each transmitting coil in the at least two transmitting coils to align with the receiving coil of a different receiving device in the at least two electronic devices, so that the transmitting coil charges the corresponding electronic device wirelessly.

[0070] The number of the transmitting coils in the wireless charging device provided by the embodiments of the present application corresponds to the number of the electronic devices, that is, when charging one electronic device, only one transmitting coil in the wireless charging device charges the receiving coil in the electronic device, and multiple transmitting coils do not charge the same electronic device at the same time, which is different from the traditional one-to-many wireless charging device. In addition, the charging areas formed by the transmitting coils of the wireless charging device provided by the embodiments of the present application are continuous, that is, the charging areas covered by the transmitting coils have no interval between the charging planes, and a continuous charging plane can be formed, that is, multiple transmitting coils form a relatively large charging area. The charging plane is located on the surface of the wireless charging device for placing the electronic device. In addition, since the transmitting coils in the wireless charging device provided by the embodiments of the present application can move, the alignment with the receiving coils in the electronic device can be automatically realized, so that the electronic device can be charged as it is placed, and the degree of freedom of wireless charging is increased.

[0071] The wireless charging device provided by the embodiments of the present application includes an alignment mechanism and at least two transmitting coils. The number of the transmitting coils can be selected to be multiple, and the specific number is not limited by the embodiments of the present application. The transmitting coils correspond to the electronic devices one by one, and each transmitting coil is used to charge the electronic device corresponding to itself, that is, N transmitting coils correspond to the receiving coils in N electronic devices one by one. Since the alignment mechanism can drive each transmitting coil to move in the corresponding area, the alignment of the transmitting coil and the receiving coil can be realized. Each transmitting coil will form a charging area corresponding to itself, and each transmitting coil will also form a center alignment area corresponding to itself. It should be understood that the charging area and the center alignment area are different. Among them, the center alignment area is an area in which the center of the transmitting coil and the center of the receiving coil corresponding to the electronic device can be aligned. And the area covered by the charging area is larger than the area of the center alignment area, because when the center of the transmitting coil and the center of the receiving coil exist deviation, wireless charging can also be performed.

[0072] In order for those skilled in the art to better understand the wireless charging device provided by the embodiments of the present application, the difference between the center alignment area and the charging area will be introduced below in combination with the drawings.

[0073] Referring to Figure 2 , the figure is a charging area schematic diagram of a wireless charging device provided by the embodiments of the present application.

[0074] Figure 2 The wireless charging device 1000 provided by the embodiments of the present application includes three transmitting coils as an example for introduction.

[0075] The center alignment areas corresponding to the three transmitting coils are a first center alignment area 10, a second center alignment area 20, and a third center alignment area 30. The three transmitting coils form a continuous charging area 100. Figure 2 As shown in the figure, the area covered by the charging area 100 is greater than the sum of the areas covered by the first center alignment area 10, the second center alignment area 20, and the third center alignment area 30. Therefore, the charging area formed by each transmitting coil is greater than the center alignment area.

[0076] The wireless charging device provided in the embodiments of the present application has continuous charging areas formed by the respective transmitting coils, where the continuity includes seamless connection between the projections of the respective charging areas, and there can also be intersection between the projections of the respective charging areas. However, the wireless charging device provided in the embodiments of the present application has no interval between the charging areas formed by the respective transmitting coils, but forms a relatively large charging plane, thereby realizing true charging while placing. That is, the projections of the center alignment areas corresponding to two adjacent transmitting coils of the at least two transmitting coils have no overlap on the charging plane; the center alignment area is an area in which the centers of the at least two transmitting coils can be aligned with the centers of the receiving coils of different receiving devices of the corresponding at least two electronic devices. In addition, the projections of the center alignment areas corresponding to two adjacent transmitting coils of the at least two transmitting coils have overlap on the charging plane; the center alignment area is an area in which the centers of the at least two transmitting coils can be aligned with the centers of the receiving coils of different receiving devices of the corresponding at least two electronic devices.

[0077] The alignment mechanism provided in the embodiments of the present application includes a motor, and each transmitting coil corresponds to two motors, which are respectively used to drive the movement of the transmitting coil in a first direction and a second direction, where the first direction is perpendicular to the second direction. The motor provided in the embodiments of the present application can move on the lead screw or can be fixed on the lead screw and cannot move.

[0078] First, the implementation mode of the motor fixed in place will be described in combination with the accompanying drawings. For the motor fixed type wireless charging device, N transmitting coils correspond to N alignment mechanisms one by one; each alignment mechanism includes a first motor and a second motor.

[0079] Device Embodiment Two

[0080] Referring to Figure 3 The figure is a schematic diagram of another wireless charging device provided in the embodiments of the present application.

[0081] Figure 3 The positions of the three transmitting coils are shown in the figure, Figure 3The three transmitting coils are located on the support slider. In order to clearly introduce the position of the transmitting coil, the support slider will not be introduced below. The position of the support slider is equivalent to the position of the transmitting coil, that is, the first transmitting coil 1, the second transmitting coil 2 and the third transmitting coil 3 respectively.

[0082] The two motors corresponding to the first transmitting coil 1 are the first motor M1X and the second motor M1Y respectively.

[0083] The first motor M1X is used to drive the first transmitting coil 1 to move along the first direction; wherein the first direction is the X direction, that is, the horizontal direction.

[0084] The second motor M1Y is used to drive the first transmitting coil 1 to move along the second direction; wherein the second direction can be the Y direction, that is, the vertical direction. The first direction is perpendicular to the second direction.

[0085] Each alignment mechanism further comprises a first guide rod D1, a second guide rod D2, a first lead screw S1, a second lead screw S2 and a coil support slider.

[0086] The first lead screw S1 and the second lead screw S2 are arranged vertically, the first guide rod D1 and the second guide rod D2 are arranged vertically, the first lead screw S1 is arranged along the first direction, and the second lead screw S2 is arranged along the second direction.

[0087] The coil support slider is sleeved at the intersection of the first guide rod D1 and the second guide rod D2; the coil support slider is used to support the transmitting coil. Figure 3 The position of the first transmitting coil 1 is the position of the coil support slider, and the transmitting coil is fixed above the coil support slider. The connection between the coil support slider and the first guide rod D1 and the second guide rod D2 is a movable connection, that is, the coil support slider can slide along the first guide rod D1 or the second guide rod D2, so that when the guide rod moves along the lead screw, the coil support slider is driven to move, realizing the movement of the transmitting coil, and finally realizing the alignment of the transmitting coil and the receiving coil in the electronic device.

[0088] The first motor M1X is fixed at one end of the first lead screw S1, the first guide rod D1 is sleeved on the first lead screw S1, and the first motor M1X drives the first guide rod D1 to move along the first lead screw S1.

[0089] Since the first guide rod D1 and the first lead screw S1 are arranged vertically, and the first lead screw S1 is arranged along the X direction, the first guide rod D1 is arranged along the Y direction. When the first motor M1X drives the first lead screw S1, the first guide rod D1 moves along the first lead screw S1, thereby realizing the movement of the first transmitting coil 1 in the X direction.

[0090] Similarly, the second motor M1Y is fixed to one end of the second lead screw S2, and the second guide rod D2 is sleeved on the second lead screw S2. The second motor M1Y drives the second guide rod D2 to move along the second lead screw S2.

[0091] Since the second guide rod D2 is set perpendicular to the second lead screw S2, and the second lead screw S2 is set along the Y direction, the second guide rod D2 is set along the X direction. When the second motor M1Y drives the second lead screw S2, the second guide rod D2 moves along the second lead screw S2, thereby realizing the movement of the first transmitting coil 1 in the Y direction.

[0092] The above describes the alignment mechanism corresponding to the first transmitting coil 1. Below, we will combine... Figure 3 This section introduces the alignment mechanism corresponding to the second transmitting coil 2. From... Figure 3 It can be seen that, in order to save the area occupied by all the alignment mechanisms, the alignment mechanism corresponding to the second transmitting coil 2 can be staggered with the alignment mechanism corresponding to the first transmitting coil 1.

[0093] The first motor M2X in the alignment mechanism corresponding to the second transmitting coil 2 is fixedly installed at one end of the first lead screw S3. The difference between this and the alignment mechanism corresponding to the first transmitting coil 1 is that the first lead screw S3 corresponding to the second transmitting coil 2 is installed on the opposite side of the first lead screw S1 corresponding to the first transmitting coil 1, thereby achieving an interlaced layout, making full use of the space of the wireless charging device, making the alignment mechanism more compact, and enabling seamless connection of the charging areas corresponding to each transmitting coil.

[0094] The first lead screw S3 corresponding to the second transmitting coil 2 is set along the X direction, and the second lead screw S4 corresponding to the second transmitting coil 2 is set along the Y direction. The first motor M2X is fixedly set at one end of the first lead screw S3, and the second motor M2Y is fixedly set at one end of the second lead screw S4. One end of the first guide rod D4 is sleeved on the first lead screw S3, and one end of the second guide rod D5 is sleeved on the second lead screw S4.

[0095] The first lead screw S5 corresponds to the third transmitting coil 3 and is set along the X direction. The first motor M3X is fixed to one end of the first lead screw S5. The second lead screw S6 corresponds to the third transmitting coil 3 and is set along the Y direction. The second motor M3Y is fixed to one end of the second lead screw S6. The first guide rod D7 is sleeved on the first lead screw S5 and is perpendicular to the first lead screw S5. The second guide rod D8 is sleeved on the second lead screw S6 and is perpendicular to the second lead screw S6.

[0096] The working principle of the alignment mechanism corresponding to the second transmitting coil 2 and the alignment mechanism corresponding to the third transmitting coil 3 are similar to the working principle of the alignment mechanism corresponding to the first transmitting coil 1. For details, please refer to the driving description of the first transmitting coil 1, which will not be repeated here.

[0097] In addition, in order to further increase the supporting effect, the alignment mechanism corresponding to each transmitting coil can further include a supporting rod; as shown in the drawings, Figure 3 The alignment mechanism corresponding to the first transmitting coil 1 can further include a supporting rod D3. The supporting rod D3 is arranged in parallel with the first screw rod S1. The first end of the first guide rod D1 is sleeved on the first screw rod S1, and the second end of the first guide rod D1 is sleeved on the supporting rod D3. The supporting rod D3 is used to support the first guide rod D1, so that the first guide rod D1 runs more stably along the X direction.

[0098] Similarly, the alignment mechanism corresponding to the second transmitting coil 2 can also include a supporting rod, which is denoted as D6. The supporting rod D6 is arranged in parallel with the first screw rod S3. The supporting rod D6 is used to support the first guide rod D4, so that the first guide rod D4 runs more stably along the X direction.

[0099] The alignment mechanism corresponding to the third transmitting coil 3 can also include a supporting rod, which is denoted as D9. The supporting rod D9 is arranged in parallel with the first screw rod S5. The supporting rod D9 is used to support the first guide rod D7, so that the first guide rod D7 runs more stably along the X direction.

[0100] As can be seen from Figure 3 , the central alignment area formed by the first transmitting coil 1 is 10.

[0101] Similarly, the central alignment area formed by the second transmitting coil is 20.

[0102] The central alignment area formed by the third transmitting coil 3 is 30.

[0103] In an implementation manner, the transmitting coil can be supported by a supporting slider and a tray. The supporting slider is movable, and the tray is arranged on the supporting slider and fixedly connected with the supporting slider, that is, the tray can move with the supporting slider. The transmitting coil is placed in the tray, so that the movement of the supporting slider drives the movement of the transmitting coil. When the center of the supporting slider is aligned with the center of the transmitting coil, the central alignment area of the supporting slider is the central alignment area of the transmitting coil corresponding to the supporting slider. When there is a deviation between the center of the supporting slider and the center of the transmitting coil, there is also a deviation between the central alignment area of the supporting slider and the central alignment area of the transmitting coil corresponding to the supporting slider. The above two settings are both for forming the central alignment area of the transmitting coil, so as to realize the alignment of the transmitting coil and the receiving coil of the electronic device by the wireless charging device provided in the embodiments of the present application, thereby wirelessly charging the electronic device.

[0104] Referring to Figure 4 , the figure is a schematic view of a plurality of transmitting coils corresponding to Figure 3 .

[0105] Continuing to take the example of the wireless charging device including three transmitting coils, the three transmitting coils are respectively a first transmitting coil 1, a second transmitting coil 2, and a third transmitting coil 3.

[0106] The first transmitting coil 1 corresponds to a center alignment area 10, the second transmitting coil 2 corresponds to a center alignment area 20, and the third transmitting coil 3 corresponds to a center alignment area 30.

[0107] Figure 4 The first transmitting coil 1 is located at the upper left corner of the corresponding center alignment area 10, the second transmitting coil 2 is located at the lower right corner of the corresponding center alignment area 20, and the third transmitting coil 3 is located at the upper right corner of the corresponding center alignment area.

[0108] Although there is a gap between the three center alignment areas, there is no gap between the charging areas formed by the three transmitting coils. Because the range of the charging area corresponding to the transmitting coil is greater than the center alignment area corresponding to the transmitting coil. The center area of the transmitting coil and the center area of the receiving coil deviate within a certain range, for example, 10 mm, and the transmission of electric energy can also be realized, thereby completing the wireless charging.

[0109] The wireless charging device introduced in the above embodiment takes the example of three transmitting coils, and the technical solutions provided in the embodiments of the present application are also applicable to a wireless charging device including two transmitting coils, which will be introduced below in conjunction with the drawings.

[0110] Referring to Figure 5 , the figure is a schematic diagram of another wireless charging device provided by the embodiments of the present application.

[0111] Figure 5 The difference between Figure 3 is only one transmitting coil less. Since Figure 5 indicates two transmitting coils, therefore, the two adjacent transmitting coils do not have to be staggered and can be arranged side by side in a symmetrical manner.

[0112] As can be seen from Figure 5 , the first lead screw S1 corresponding to the first transmitting coil 1 and the second lead screw S4 corresponding to the second transmitting coil 2 are on the same straight line and are not staggered. Similarly, the second guide rod D2 corresponding to the first transmitting coil 1 and the second guide rod D5 corresponding to the second transmitting coil 2 are also located on the same straight line and are not staggered. However, the second lead screw S2 corresponding to the first transmitting coil 1 and the second lead screw S4 corresponding to the second transmitting coil 2 are respectively symmetrically distributed on the outer side of the first transmitting coil 1 and the second transmitting coil 2.

[0113] In addition, Figure 5 and Figure 3The difference also includes that the support rod D3 corresponding to the first transmitting coil 1 and the support rod D6 corresponding to the second transmitting coil 2 are located on the same side, that is, on the same straight line, instead of being symmetrically distributed on the two sides of the charging area.

[0114] Figure 3 In the first embodiment, the alignment mechanisms corresponding to the first transmitting coil 1 and the alignment mechanisms corresponding to the second transmitting coil 2 are staggered. When the third transmitting coil 3 exists, the area occupied by all the alignment mechanisms is saved. However, Figure 5 In the second embodiment, only two transmitting coils are included, so they can be arranged side by side and do not have to be staggered.

[0115] All the alignment mechanisms corresponding to all the transmitting coils are located on the same plane. For example, when the wireless charging device is flat, it is placed on the desktop, and the three alignment mechanisms corresponding to the three transmitting coils are at the same vertical height, where the vertical direction is perpendicular to the desktop. When the three alignment mechanisms are at the same height in the vertical direction, there is a gap between the center alignment areas corresponding to the three transmitting coils, so the two adjacent alignment mechanisms are independent and cannot seamlessly connect with each other. However, the charging areas corresponding to the three transmitting coils can seamlessly connect without a gap.

[0116] In order to make the center alignment area corresponding to the alignment mechanism corresponding to the fixed motor have no gap, the middle alignment mechanism can be sunken to another plane, that is, the middle alignment mechanism is lower than the two alignment mechanisms on the two sides in the vertical direction.

[0117] Referring to Figure 6 FIG. 3 is a side view of three alignment mechanisms provided by an embodiment of the present application.

[0118] The present embodiment continues to take the wireless charging device including three transmitting coils as an example for introduction.

[0119] The transmitting coils include at least three, and the alignment mechanisms corresponding to the three transmitting coils are respectively a first alignment mechanism 50a, a second alignment mechanism 50b, and a third alignment mechanism 50c;

[0120] The first alignment mechanism 50a, the second alignment mechanism 50b, and the third alignment mechanism 50c are arranged in sequence along a first direction (X direction);

[0121] The first alignment mechanism 50a and the third alignment mechanism 50c are both located at a first height in the vertical direction;

[0122] The second alignment mechanism 50b is located at a second height in the vertical direction; the first height and the second height belong to different heights, that is, the projections of the first alignment mechanism 50a and the second alignment mechanism 50b in the vertical direction do not overlap. The present embodiment does not limit whether the first height is higher or the second height is higher. Figure 6The first height is above the second height, and it should be understood that the second height can also be above the first height.

[0123] Since the second alignment mechanism 50b and the first alignment mechanism 50a are not at the same height in the vertical direction, the second alignment mechanism 50b and the first alignment mechanism 50a can intersect in the horizontal direction, that is, the projection in the horizontal direction can overlap a part, so that the interval between the center alignment areas of the first transmitting coil and the second transmitting coil can be eliminated, so that the three transmitting coils can seamlessly connect between the respective center alignment areas.

[0124] It should be understood that the height of each alignment mechanism in the vertical direction is staggered to reduce or eliminate the interval between the center alignment areas corresponding to two adjacent transmitting coils, that is, no interval or interval can still exist, and the embodiments of the present application are not limited.

[0125] Figure 6 The wireless charging device includes three transmitting coils, and to avoid the interval between the center alignment areas corresponding to two adjacent transmitting coils, one of the two adjacent alignment mechanisms can be lowered to the next layer in the vertical direction, and similarly, Figure 5 The mode shown is also applicable to the case where the wireless charging device includes two transmitting coils, that is, Figure 5 The two transmitting coils correspond to the alignment mechanisms, and one of the alignment mechanisms can be lowered to the other height, and the height in the vertical direction is staggered to reduce or eliminate the interval between the center alignment areas of the two adjacent transmitting coils.

[0126] The above stack arrangement of the alignment mechanism can make the center alignment areas corresponding to two adjacent transmitting coils have no interval. From the charging effect, when the interval between the center alignment areas corresponding to two adjacent transmitting coils is ≤8mm, the charging effect on any position of the electronic device will not be affected. When the interval between the center alignment areas corresponding to two adjacent transmitting coils is ≥8mm, when the electronic device is placed at the middle position of the center alignment areas corresponding to two adjacent transmitting coils, that is, at the interval, the wireless charging device performs wireless charging on the electronic device at the interval, and the charging efficiency is obviously lower than that of the center alignment area. Therefore, in order to improve the charging efficiency, the alignment mechanism is arranged in layers, so that the center alignment areas between the respective transmitting coils can be continuous, efficient wireless charging can be achieved on the entire plane, and true random charging is achieved.

[0127] The fixed motor corresponds to the alignment mechanism provided by the embodiment of the present application. The movement range of the supporting slider can be limited by mechanical limiting or controller control limiting, so that the charging area corresponding to each transmitting coil is an independent range, to avoid spatial interference between the transmitting coils.

[0128] The multiple transmitting coils combine to form a large enough charging range. Each transmitting coil is only responsible for wireless charging of the electronic device placed in the independent charging range. The outer surface of the upper shell of the wireless charging device can be provided with a groove for limiting or prompting the charging area corresponding to the transmitting coil. The electronic device with small size can be placed in the groove, and the electronic device with large size can be placed on the groove, so as to avoid the situation that when the size of the electronic device is smaller than the size of the transmitting coil, the user places two small-size electronic devices in the size range of a transmitting coil, resulting in that one of the electronic devices cannot be charged.

[0129] Device embodiment three

[0130] The above embodiments introduce the wireless charging device in which the motor is fixed at one end of the lead screw and cannot move. The implementation mode in which the motor can move along the lead screw is introduced below. First, the implementation mode of the wireless charging device including three transmitting coils is introduced in combination with the drawings. It should be understood that the wireless charging device in which the motor moves is not limited to the specific number of transmitting coils, and the number of transmitting coils can be greater than or equal to two. The projection of the center alignment area corresponding to each transmitting coil of the wireless charging device provided by the embodiment of the present application can overlap or not overlap when the motor moves.

[0131] For the wireless charging device in which the motor can move, the alignment mechanism includes N first motors, N second motors, a first lead screw and N second lead screws. All the second lead screws are arranged perpendicularly to the first lead screw. N is the number of at least two transmitting coils, and N is an integer greater than or equal to 2.

[0132] The N first motors are movably sleeved on the first lead screw. The alignment mechanism only includes one first lead screw, and all the first motors share the same first lead screw. Since all the first motors are located on the same lead screw, the movement range of each first motor can fully cover the length of the first lead screw, which is different from the fixed motor provided in the above embodiments. It is continued to take the example of the wireless charging device including three transmitting coils. Figure 3For example, when the three transmitting coil corresponding alignment mechanism is located in the same layer, because the fixed motor corresponding to each lead screw is independent, and each lead screw is not seamless connection, therefore, equivalent to the existence of obstacles between the adjacent two first motor, the existence of interval between the center of the adjacent two transmitting coil corresponding alignment area. And the embodiment because the three first motor share the same lead screw, therefore, the three first motor moving range can be seamless connection in the first lead screw, so that the three transmitting coil corresponding center alignment area between no interval. Namely, N first motor on the first lead screw respectively corresponding to the moving range between no intersection. In addition, N first motor on the first lead screw respectively corresponding to the moving range between can also exist intersection.

[0133] N second motor and N second lead screw one to one, each second motor can be movably sleeved on the corresponding second lead screw; each second motor is placed on the corresponding transmitting coil; the second motor can drive the transmitting coil on the second motor to move along the Y direction. Wherein each second motor can be provided with a tray, and the tray is used for placing the transmitting coil. The transmitting coil can be fixed on the tray. The height of each tray in the embodiment of the application is not limited to be at the same height or at different heights. In addition, the connection relationship between the tray and the second motor can be fixed, or the height of the tray can be adjusted, so as to adjust the height of the transmitting coil.

[0134] In addition, the second motor can also be provided with a sliding block, and the tray is arranged on the sliding block. The center of the sliding block and the center of the tray can be aligned or offset, that is, there is a deviation between the projection of the center of the sliding block and the center of the tray on the horizontal plane. When the center of the sliding block and the center of the tray are offset, the adjacent motor, lead screw and guide rod can avoid each other and prevent mutual interference.

[0135] Each second lead screw is fixedly connected with the corresponding first motor. Specifically, the second lead screw can be fixed on the corresponding first motor by increasing a structural member or laser welding, that is, the first motor moves to drive the second lead screw to move. Since the first motor moves along the first lead screw, the connection relationship between the first motor and the first lead screw is penetrating type.

[0136] The wireless charging device provided by the embodiment of the application can move along the lead screw, instead of being fixed on the lead screw and being immovable.

[0137] The alignment mechanism further comprises a first guide rod and N second guide rods; the first guide rod is arranged in parallel with the first lead screw, and the N second guide rods are arranged in parallel with the N second lead screws respectively; all the first motors are movably sleeved on the first guide rod; and each second motor is movably sleeved on the corresponding second guide rod.

[0138] The alignment mechanism further comprises a third guide rod arranged in parallel with the first guide rod; N sliders are arranged on the third guide rod; the second lead screw and the second guide rod are both connected to the corresponding slider.

[0139] The alignment mechanism further comprises N trays; each second motor is provided with a tray, and the tray is used to carry the transmitting coil; the height of the tray is adjustable, so that different transmitting coils are located in different planes.

[0140] Next, taking a wireless charging device comprising three transmitting coils as an example, the corresponding alignment mechanism of the mobile motor is introduced. Figure 7

[0141] Referring to Figure 7 , the figure is a perspective view of another wireless charging device provided by the embodiment of the application.

[0142] The wireless charging device provided by the embodiment comprises three transmitting coils, namely a first transmitting coil 1, a second transmitting coil 2 and a third transmitting coil 3.

[0143] The first transmitting coil 1 corresponds to a first motor M1X and a second motor M1Y. The second transmitting coil 2 corresponds to a first motor M2X and a second motor M2Y. The third transmitting coil 3 corresponds to a first motor M3X and a second motor M3Y.

[0144] The three first motors M1X, M2X and M3X are all sleeved on the first lead screw S1 and can move in the X direction along the first lead screw S1, so as to correspondingly change the position of the transmitting coil in the X direction.

[0145] The second motor M1Y corresponding to the first transmitting coil 1 is sleeved on the second lead screw S2; the second motor M2 corresponding to the second transmitting coil 2 is sleeved on the second lead screw S3; and the second motor M3 corresponding to the third transmitting coil 3 is sleeved on the second lead screw S4.

[0146] In order to play a supporting role and make the motor more stable during operation along the lead screw, each motor can be clamped on a guide rod in addition to being sleeved on the lead screw, and the guide rod plays a supporting role. As Figure 7 shown, the alignment mechanism further comprises a first guide rod D1, a second guide rod D2, a third guide rod D3 and a fourth guide rod D4. Among them, the three first motors M1X, M2X and M3X are clamped on the first guide rod D1, the first guide rod D1 is arranged in parallel with the first lead screw S1, and the two ends of the first guide rod D1 and the first lead screw S1 are both fixed on the bracket. Among them, the three second motors M1Y, M2Y and M3Y are clamped on the three second guide rods D2, D3 and D4 respectively. The three second guide rods D2, D3 and D4 are arranged in parallel with the corresponding three second lead screws S2, S3 and S4.

[0147] ​In addition, to fix the second lead screw and the second guide rod, the alignment mechanism provided in this embodiment may also include a third guide rod D5 arranged parallel to the first guide rod D1; N sliders are arranged on the third guide rod D5; the second lead screw and the second guide rod are both connected to the corresponding sliders. For example, the first end of the second lead screw S2 is fixedly connected to the first motor M1X, and the second end of the second lead screw S2 is fixedly connected to the slider arranged on the third guide rod D5; the first end of the second guide rod D2 is fixedly connected to the first motor M1X, and the second end of the second guide rod D2 is fixedly connected to the slider arranged on the third guide rod D5; the connections of the remaining second lead screw and second guide rods are similar and will not be described further here.

[0148] From the above analysis, it can be seen that the first motor M1X and the second motor M1Y are used to drive the first transmitting coil 1 to move in the X and Y directions, respectively. The first motor M2X and the second motor M2Y are used to drive the second transmitting coil 2 to move in the X and Y directions, respectively. The first motor M3X and the second motor M3Y are used to drive the third transmitting coil 3 to move in the X and Y directions, respectively.

[0149] If the two motors corresponding to each transmitting coil are located at a vertices of the corresponding area, such as the lower left or upper right corner, then the area covering the entire rectangle can be moved.

[0150] The above describes the movement of three transmitting coils. The following describes the implementation method when the wireless charging device includes two transmitting coils.

[0151] See Figure 8 The figure is a schematic diagram of another wireless charging device provided in an embodiment of this application.

[0152] The wireless charging device provided in this embodiment and Figure 7 The only difference is that it lacks a transmitting coil, and therefore lacks a first motor and a second motor, as well as a second lead screw and a second guide rod.

[0153] The rest and Figure 7 They are exactly the same, so I will not repeat them here.

[0154] The following is combined Figure 9 Simplified diagram introduction Figure 7 as well as Figure 8 The working principle of the corresponding transmitting coil alignment of the mobile motor shown.

[0155] See Figure 9 The image is related to Figure 7 The corresponding simplified diagram.

[0156] Figure 9The alignment mechanism of the wireless charging device 1000 shown includes a frame 51, and each lead screw and guide rod is fixed on the frame 51. Only the movement of the first motor is introduced below, and the movement mode of the first motor will affect the corresponding central alignment area.

[0157] The wireless charging device includes a motor that can move. The motor can be controlled in different movement modes, that is, the controller controls the movement mode of the motor, which can be divided into two forms. The first form is that there is a gap between the projections of the central alignment areas corresponding to each transmitting coil. The second form is that there is no gap between the projections of the central alignment areas corresponding to each transmitting coil. However, both the above two forms can realize that there is no gap between the projections of the charging areas corresponding to each transmitting coil, that is, the entire plane can be charged continuously.

[0158] The first movement mode is introduced below, and it should be understood that the common point of the two movement modes is that the three second motors can move within the entire length of the respective second lead screws. The difference between the two movement modes is that the movement ranges of the three first motors along the first lead screw are different.

[0159] The first form is:

[0160] The three first motors have fixed movement ranges.

[0161] The three first motors M1X, M2X, and M3X divide the length of the first lead screw S1 equally, and each first motor moves within one third of the length of the first lead screw S1. For example, when the first motor M1X moves along the first lead screw S1, it will not cross into the range in which the first motor M2X can move. Similarly, when the first motor M3X moves, it will not cross into the range in which the first motor M1X can move.

[0162] Since the first motor moves on the first lead screw S1, there is a corresponding distance, so when the first motor and the second motor combination moves the transmitting coil, the central alignment area corresponding to each transmitting coil is independent and does not overlap, and there may be a gap between them, and Figure 3 The central alignment area corresponding to the fixed motor shown is similar, and the only difference is that the three first motors in this embodiment are collectively on the first lead screw S1. In addition to the size of the first motor itself affecting the central alignment area, there is no other obstacle.

[0163] The first movement mode introduced above can have a gap between the central alignment areas formed by the three transmitting coils. Continue to refer to Figure 3 the relationship between the charging area and the central alignment area shown, which will not be described here.

[0164] The second form is:

[0165] The three first motors do not have fixed movement ranges.

[0166] Different from the first mode, in the second moving mode, each first motor can move in a long distance range on the first screw rod S1, that is, each first motor does not have a fixed moving area, for example, the first motor M1X can move to the position of the first motor M2X, and the first motor M3X can move to the position of the first motor M1X. Figure 9

[0167] Since each first motor can move in a large range, the center alignment area corresponding to each transmitting coil is larger than the center alignment area in the first mode.

[0168] In the second moving mode described above, the projections of the center alignment areas formed by the three transmitting coils can have no interval, that is, seamless connection. It can be understood that, since the charging area formed by the transmitting coils is larger than the center alignment area, when the projections of the center alignment areas corresponding to the three transmitting coils have no interval, the projections of the charging areas formed by the three transmitting coils have an overlap, as shown in FIG. 10. Figure 10

[0169] In addition, in the second moving mode described above, the projections of the center alignment areas formed by the three transmitting coils can have an overlap, as shown in FIG. 11. Figure 11

[0170] The projection of the center alignment area 10 corresponding to the first transmitting coil and the projection of the center alignment area 20 corresponding to the second transmitting coil have an overlap area 12, and the projection of the center alignment area 20 corresponding to the second transmitting coil and the projection of the center alignment area 30 corresponding to the third transmitting coil have an overlap area 23. Since the projections of the center alignment areas corresponding to the adjacent two transmitting coils among the three transmitting coils have an overlap area, the projections of the charging areas corresponding to the adjacent two transmitting coils also have an overlap area. When the wireless charging device charges the electronic device, it can select one transmitting coil corresponding to the electronic device to charge the electronic device, and when multiple electronic devices are wirelessly charged, the transmitting coils can be moved so that the projections of the charging areas of the transmitting coils have no overlap.

[0171] The wireless charging device provided in the embodiments of the present application can realize alignment with the receiving coil, and the transmitting coil is only responsible for charging the aligned receiving coil, so that efficient charging can be realized, and fast charging with a large power can be realized, for example, a wireless charging power of 27 W or more can be provided. ​​​

[0172] The above embodiment two and embodiment three respectively introduce the wireless charging device corresponding to the fixed motor and the mobile motor, and the following introduces other layouts suitable for the above two wireless charging devices.

[0173] Referring to Figure 12 , the figure is an exploded view of a wireless charging device provided by the embodiment of the application.

[0174] Figure 12 The exploded view shown is a side view of a wireless charging device provided by the embodiment of the application.

[0175] The wireless charging device provided by the embodiment of the application can include an upper shell 30, a tray 40, a support 60, a circuit board 70 and a lower shell 80 in addition to the transmitting coil and the alignment mechanism 50.

[0176] The circuit board 70 includes a controller and a peripheral circuit, and the controller is used to control the alignment mechanism to drive the transmitting coil to move.

[0177] The embodiment of the application does not limit the positional relationship between the circuit board 70 and the alignment mechanism 50, in order to make the thickness of the entire wireless charging device thinner, all the alignment mechanisms corresponding to the transmitting coils can be located in the same layer, so that the thickness of the wireless charging device can be reduced, which is beneficial to the heat dissipation of the circuit board 70 and the transmitting coil.

[0178] The alignment mechanism 50 can be located on the support 60, and the support 60 is used to support the alignment mechanism 50.

[0179] The wireless charging device provided by the embodiment of the application can also include a lower shell 80, and the upper shell 30 and the lower shell 80 cooperate to encapsulate the tray 40, the alignment mechanism 50, the support 60 and the circuit board 70 inside.

[0180] The embodiment of the application also does not limit the positional relationship between the alignment mechanism 50 and the circuit board 70, Figure 12 which is introduced by taking the vertical stacking distribution of the alignment mechanism 50 and the circuit board 70 as an example, that is, the alignment mechanism 50 is located vertically above the circuit board 70. The vertical direction is the direction perpendicular to the charging plane.

[0181] The following introduces another implementation manner, in order to make the thickness of the wireless charging device thinner, the alignment mechanism can be located in the same layer as the circuit board.

[0182] Referring to Figure 13 , the figure is a schematic view of the alignment mechanism and the circuit board side by side provided by the embodiment of the application.

[0183] In a specific implementation, the alignment mechanism 50 can be arranged side by side with the circuit board 70 in the same layer, i.e., arranged side by side in the same horizontal plane, so as to reduce the thickness of the wireless charging device in the vertical direction, make the entire wireless charging device thinner, and facilitate heat dissipation.

[0184] Referring to Figure 14 FIG. 4 is a schematic view of a circuit board surrounding an alignment mechanism according to an embodiment of the present application.

[0185] In the wireless charging device provided by the embodiment, the circuit board 70 can surround the alignment mechanism 50. That is, arranged side by side in the same horizontal plane, so as to reduce the thickness of the wireless charging device in the vertical direction, make the entire wireless charging device thinner, and facilitate heat dissipation.

[0186] The embodiment of the present application does not specifically limit the specific layout form when the circuit board 70 and the alignment mechanism 50 are located in the same layer. Any one of the above two forms can be adopted, or other forms of same-layer layout can be adopted.

[0187] The specific implementation of the upper shell 30 of the wireless charging device provided by the embodiment of the present application will be described below with reference to the accompanying drawings. First, the first implementation is introduced.

[0188] Referring to Figure 15 FIG. 5 is a top view of an upper shell according to an embodiment of the present application.

[0189] In one implementation, the outer surface of the upper shell 30 of the wireless charging device is not provided with a groove, i.e., a flat plane, so as to have a more beautiful appearance and a simple manufacturing process, and easy to produce and manufacture.

[0190] Referring to Figure 16 FIG. 6 is another top view of an upper shell according to an embodiment of the present application.

[0191] In another implementation, the outer surface of the upper shell 30 of the wireless charging device is provided with a groove. The number of grooves is not specifically limited by the embodiment of the present application, and can be equal to the number of transmitting coils. For example, when the wireless charging device includes three transmitting coils, the number of grooves is also three.

[0192] Figure 16 The groove shown is a square groove, and can also be a rectangular groove.

[0193] The size of each groove can be equal.

[0194] For electronic devices with a size greater than the size of the groove, such as a mobile phone, the groove is used to indicate the position of the mobile phone. For electronic devices with a size less than or equal to the size of the groove, such as an earphone box or a watch, the groove can limit the position of the earphone box or the watch.

[0195] Referring toFigure 17 This figure is a top view of another upper housing provided in an embodiment of this application.

[0196] Figure 17 The groove shown is a non-square groove.

[0197] It should be understood that the specific shape of the groove, in addition to Figure 16 and Figure 17 Besides those shown, other types are also possible, and this application does not impose specific limitations on the embodiments. For example, they can be circular or elliptical. In addition, the dimensions of each groove can also be different.

[0198] The size of each transmitting coil in the wireless charging device provided in the above embodiments of this application can be the same, that is, the type of electronic device is not limited, and it can be placed arbitrarily at the position corresponding to any transmitting coil for charging.

[0199] The heat dissipation of the wireless charging device provided in the embodiments of this application is described below with reference to the accompanying drawings.

[0200] See Figure 18 This figure is a schematic diagram of a heat dissipation section provided in an embodiment of this application.

[0201] The wireless charging device provided in this embodiment includes a sandwich-like heat dissipation device, which consists of three parts: an upper shell 30, a plate 90, and a hollow layer located between the upper shell 30 and the plate 90.

[0202] A flat plate 90 is disposed vertically below the upper housing 30; the upper housing 30 and the flat plate 90 are disposed parallel to each other.

[0203] The flat plate 90 is provided with ventilation holes 91;

[0204] A gap layer is provided between the upper shell 30 and the flat plate 90.

[0205] Figure 18 The image shown is a top view of the heat dissipation section. To further illustrate the structure of the heat dissipation section, we will now provide a more detailed explanation using side views from two different directions.

[0206] See Figure 19 The figure is a side view of the heat dissipation part of the wireless charging device provided in an embodiment of this application.

[0207] See Figure 20 This figure shows an embodiment of the present application. Figure 19 Side view of the corresponding adjacent side.

[0208] The side of the wireless charging device has an air inlet 93 corresponding to the gap layer.

[0209] The cold air enters the gap layer from the air inlet 93, enters the inner cavity of the wireless charging device through the air holes 91 on the flat plate 90, and performs heat dissipation for the transmitting coil.

[0210] In addition, the side of the wireless charging device is also provided with an air outlet 92, and the air flow in the inner cavity of the wireless charging device is blown out from the air outlet 92.

[0211] It should be understood that a fan is arranged in the wireless charging device to accelerate the circulation of the air flow and improve the heat dissipation capacity.

[0212] Since the wireless charging device is a one-to-many wireless charging device, when wireless charging is performed for multiple electronic devices, the wireless charging device needs to be cooled by air cooling; at the same time, the air duct also needs to be in effective contact with the upper surface of the upper cover, so as to ensure that the temperature rise of the upper surface of the wireless charging device is low enough, thereby helping to dissipate heat for the electronic devices being charged. Therefore, the upper shell of the one-to-many wireless charging device adopts a sandwich structure design, the air inlet 93 is in the air inlet; the air inlet 93 is in full contact with the upper surface of the upper shell 30, which can ensure that the temperature rise of the upper surface of the wireless charging device is low enough, thereby helping to dissipate heat for the electronic devices being charged. The air holes 91 on the flat plate 90 can optimize the air duct entering the inner cavity of the wireless charging device, and the optimized air duct can avoid that the cold air is directly sucked in and blown out by the fans on both sides, and cannot perform heat dissipation for the transmitting coil located in the center.

[0213] In addition, the wireless charging device provided by the embodiment of the application can also include a controller.

[0214] The controller controls the alignment mechanism to drive each of the N transmitting coils to align with the receiving coils of different receiving devices in the at least two electronic devices. The embodiment of the application does not specifically limit the manner in which the controller controls the alignment mechanism, for example, the controller can obtain the positions of the receiving coils, thereby controlling the movement of the transmitting coils to align with the receiving coils in the electronic devices.

[0215] Based on the wireless charging device provided in the above embodiments, the embodiment of the present application further provides a wireless charging base for wirelessly charging at least two electronic devices, comprising: a power interface, an upper cover, a lower cover, a positioning mechanism and at least two transmitting coils; the positioning mechanism and the at least two transmitting coils are located in a cavity formed by the upper cover and the lower cover; the power interface is arranged on one side of the cavity; the power interface is used to connect the direct current transmitted by the adapter; the transmitting coils correspond to the electronic devices one by one; each transmitting coil in the at least two transmitting coils forms a corresponding charging area on a charging plane, and the charging areas corresponding to the adjacent two transmitting coils are connected to each other or overlap, that is, each charging area is continuous to each other and does not have an interval; the charging plane is located on a surface of the wireless charging device for placing the electronic devices. The positioning mechanism is used to drive each transmitting coil in the at least two transmitting coils to be positioned with the receiving coil of a different receiving device in the at least two electronic devices, so as to wirelessly charge the corresponding electronic device by the transmitting coil.

[0216] The wireless charging base provided by the embodiment of the present application is a one-to-many base, that is, it can simultaneously charge multiple electronic devices. The power interface of the wireless charging base can be connected to an adapter, and the adapter is used to convert alternating current into direct current to provide for the wireless charging base. The wireless charging base transforms the direct current to wirelessly charge the electronic devices. Each transmitting coil in the wireless charging base can be moved to realize the positioning with the receiving coil in the electronic device, that is, to realize the charging while placing. Moreover, since there is no interval between the charging areas corresponding to each transmitting coil, the entire plane of the base can be used as a charging area to charge the electronic devices, thereby improving the charging efficiency.

[0217] The at least two transmitting coils can be N transmitting coils, and the N transmitting coils simultaneously wirelessly charge N different electronic devices.

[0218] The implementation mode of the positioning mechanism corresponding to each transmitting coil can refer to the description in the above device embodiment, which will not be described here again.

[0219] It should be understood that in the present application, "at least one" refers to one or more, and "multiple" refers to two or more. "And / or" is used to describe the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, "A and / or B" can represent: only A, only B and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally represents that the associated objects before and after are in an "or" relationship. "At least one of the following" or similar expressions means any combination of these items, including any combination of single or multiple items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0220] The above-described and above-embodied examples are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A wireless charging device, characterized in that, The wireless charging device is used to wirelessly charge at least two electronic devices, and the wireless charging device includes: an alignment mechanism and at least two transmitting coils; The at least two transmitting coils correspond one-to-one with the at least two electronic devices, and each transmitting coil is used to wirelessly charge the corresponding electronic device. Each of the at least two transmitting coils forms its own corresponding charging area on the charging plane, and the charging areas of two adjacent transmitting coils are connected to each other or overlap; the charging plane is located on the surface of the wireless charging device for placing the electronic device; The alignment mechanism is used to drive each of the at least two transmitting coils to align with the receiving coils of different receiving devices in the at least two electronic devices, so that the transmitting coils wirelessly charge the corresponding electronic devices. The alignment mechanism includes at least two, and the at least two transmitting coils correspond one-to-one with the at least two alignment mechanisms; Each of the alignment mechanisms includes: a first motor and a second motor; The first motor is used to drive the corresponding transmitting coil to move along the first direction; The second motor is used to drive the corresponding transmitting coil to move along the second direction; The first direction is perpendicular to the second direction; Wherein, the at least two transmitting coils include at least three, and the at least two alignment mechanisms include at least the following three: a first alignment mechanism, a second alignment mechanism, and a third alignment mechanism; The first alignment mechanism, the second alignment mechanism, and the third alignment mechanism are arranged sequentially along the first direction; Both the first alignment mechanism and the third alignment mechanism are located at a first height in the vertical direction; The second alignment mechanism is located at a second height in the vertical direction; the first height and the second height are different. There is no gap between the center alignment regions corresponding to two adjacent transmitting coils in the at least two transmitting coils when projected onto the charging plane.

2. The device according to claim 1, characterized in that, The center alignment regions of two adjacent transmitting coils in the at least two transmitting coils do not overlap between the projections of the transmitting coils onto the charging plane; the center alignment region is the area where the centers of the at least two transmitting coils can be aligned with the centers of the receiving coils of different receiving devices in the at least two electronic devices.

3. The device according to claim 1, characterized in that, The center alignment regions of two adjacent transmitting coils in the at least two transmitting coils overlap between their projections on the charging plane; the center alignment region is the area where the centers of the at least two transmitting coils can be aligned with the centers of the receiving coils of different receiving devices in the at least two electronic devices.

4. The device according to claim 1, characterized in that, Each of the alignment mechanisms further includes: a first guide rod, a second guide rod, a first lead screw, a second lead screw, and a coil support slider; The first lead screw and the second lead screw are arranged perpendicularly, the first guide rod and the second guide rod are arranged perpendicularly, the first lead screw is arranged along the first direction, and the second lead screw is arranged along the second direction; The coil support slider is sleeved at the junction of the first guide rod and the second guide rod; the coil support slider is used to support the corresponding transmitting coil; The first motor is fixed to one end of the first lead screw, the first guide rod is sleeved on the first lead screw, and the first motor drives the first guide rod to move along the first lead screw; The second motor is fixed to one end of the second lead screw, and the second guide rod is sleeved on the second lead screw. The second motor drives the second guide rod to move along the second lead screw.

5. The device according to claim 4, characterized in that, Each of the alignment mechanisms further includes: a support rod; For each alignment mechanism: the support rod is arranged parallel to the first lead screw; The first end of the first guide rod is sleeved on the first lead screw, and the second end of the first guide rod is sleeved on the support rod.

6. The device according to claim 4 or 5, characterized in that, Each of the alignment mechanisms further includes: a tray; Each of the coil support sliders is provided with a tray, which is used to carry the corresponding transmitting coil.

7. The device according to any one of claims 1-6, characterized in that, The at least two alignment mechanisms are located on the same plane.

8. The device according to claim 1, characterized in that, The alignment mechanism includes: N first motors, N second motors, a first lead screw, and N second lead screws; where N is the number of the at least two transmitting coils, and N is an integer greater than or equal to 2. Each of the N first motors is movably mounted on the first lead screw; The N second motors correspond one-to-one with the N second lead screws, and each second motor is movably mounted on its corresponding second lead screw; a corresponding transmitting coil is placed on each of the N second motors; The N second lead screws are all arranged perpendicularly to the first lead screw, and the N second lead screws correspond one-to-one with the N first motors. Each second lead screw is fixedly connected to the corresponding first motor.

9. The device according to claim 8, characterized in that, There is no overlap between the respective movement ranges of the first motors on the first lead screw.

10. The device according to claim 9, characterized in that, The movement ranges of each of the first motors on the first lead screw overlap.

11. The device according to any one of claims 8-10, characterized in that, The alignment mechanism also includes a first guide rod and N second guide rods; The first guide rod is arranged parallel to the first lead screw, and the N second guide rods are arranged parallel to the N second lead screws respectively; the N second motors are arranged parallel to the N second guide rods respectively. Each of the N first motors can be movably fitted onto the first guide rod; Each second motor is movably fitted onto its corresponding second guide rod.

12. The device according to claim 11, characterized in that, The alignment mechanism further includes a third guide rod arranged parallel to the first guide rod; The third guide rod is provided with N sliders; the N sliders correspond one-to-one with the N second guide rods; the N sliders correspond one-to-one with the N second lead screws; Each second lead screw and each second guide rod is connected to a corresponding slider.

13. The device according to any one of claims 8-10, characterized in that, The alignment mechanism further includes: N trays; each of the N trays corresponds one-to-one with one of the N second motors; Each tray is mounted on its corresponding second motor, and each tray is used to carry its corresponding transmitting coil.

14. The device according to claim 13, characterized in that, The height of the N trays is adjustable so that the at least two transmitting coils are located on different planes.

15. The device according to any one of claims 1-6, characterized in that, Also includes: Circuit board; The alignment mechanism and the circuit board are stacked in a vertical direction, which is perpendicular to the charging plane.

16. The device according to any one of claims 1-6, characterized in that, Also includes: Circuit board; The circuit board and the alignment mechanism are located on the same layer, and the circuit board and the alignment mechanism are arranged side by side.

17. The device according to any one of claims 1-6, characterized in that, Also includes: Circuit board; The circuit board is located on the same layer as the alignment mechanism, and the circuit board surrounds the periphery of the alignment mechanism.

18. The device according to any one of claims 1-6, characterized in that, Also includes: Upper shell and flat plate; A flat plate is disposed vertically below the upper housing; the upper housing and the flat plate are disposed parallel to each other; The flat plate is provided with ventilation holes; A gap layer is provided between the upper shell and the plate; The side of the wireless charging device is provided with a ventilation channel corresponding to the position of the gap layer; Cool air enters the gap layer through the ventilation duct and then enters the inner cavity of the wireless charging device through the ventilation holes on the flat plate to dissipate heat from the transmitting coil.

19. The device according to claim 18, characterized in that, The outer surface of the upper housing is provided with N grooves, where N is the number of the transmitting coils and N is an integer greater than or equal to 2; The N grooves are used to limit the size of electronic devices smaller than the groove size; the grooves are also used to indicate the placement position of electronic devices larger than the groove size during wireless charging.

20. The device according to any one of claims 1-6, characterized in that, Also includes: Controller; The controller is used to control the alignment mechanism to drive each of the N transmitting coils to align with the receiving coils of different receiving devices in the at least two electronic devices.

21. A wireless charging dock, characterized in that, For wireless charging of at least two electronic devices, including: a power interface, a top cover, a bottom cover, an alignment mechanism, and at least two transmitting coils; The alignment mechanism and the at least two transmitting coils are located within the cavity formed by the upper and lower covers; The power interface is provided on one side of the cavity; The power interface is used to connect the DC power transmitted by the adapter; Each transmitting coil corresponds to one of the electronic devices; each of the at least two transmitting coils forms its own corresponding charging area on the charging plane, and the charging areas corresponding to two adjacent transmitting coils are connected to each other or overlap; the charging plane is located on the surface of the wireless charging base for placing the electronic devices; The alignment mechanism is used to drive each of the at least two transmitting coils to align with the receiving coils of different receiving devices in the at least two electronic devices, so that the transmitting coils wirelessly charge the corresponding electronic devices. The alignment mechanism includes at least two, and the at least two transmitting coils correspond one-to-one with the at least two alignment mechanisms; Each of the alignment mechanisms includes: a first motor and a second motor; The first motor is used to drive the corresponding transmitting coil to move along the first direction; The second motor is used to drive the corresponding transmitting coil to move along the second direction; The first direction is perpendicular to the second direction; Wherein, the at least two transmitting coils include at least three, and the at least two alignment mechanisms include at least the following three: a first alignment mechanism, a second alignment mechanism, and a third alignment mechanism; The first alignment mechanism, the second alignment mechanism, and the third alignment mechanism are arranged sequentially along the first direction; Both the first alignment mechanism and the third alignment mechanism are located at a first height in the vertical direction; The second alignment mechanism is located at a second height in the vertical direction; the first height and the second height are different. There is no gap between the center alignment regions corresponding to two adjacent transmitting coils in the at least two transmitting coils when projected onto the charging plane.

22. The base according to claim 21, characterized in that, The at least two transmitting coils comprise N, and the N transmitting coils simultaneously wirelessly charge N different electronic devices.

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