CN210120415U

CN210120415U - Wireless charger

Info

Publication number: CN210120415U
Application number: CN201920913065.3U
Authority: CN
Inventors: 李贡献; 刘凯
Original assignee: Shenzhen Ranvoo Technology Co Ltd
Current assignee: Shenzhen Ranvoo Technology Co Ltd
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-02-28
Anticipated expiration: 2029-06-17

Abstract

The utility model provides a wireless charger, including casing, transmitting coil module and circuit board, the casing has a charging surface, the transmitting coil module is just right to the charging surface sets up to carry out wireless charging to the electronic equipment of placing on the charging surface, be equipped with the interface that charges that is used for connecting the external power source on the casing, wireless charger still includes the energy storage unit, the interface that charges is connected with the circuit board electricity, the circuit board respectively with the transmitting coil module with the energy storage unit electricity is connected, be equipped with a detecting element on the casing; when the electronic equipment is placed on the wireless charger for wireless charging, the detection element detects the electronic equipment, so that the energy storage unit is started to supply power to the circuit board and the transmitting coil module.

Description

Wireless charger

Technical Field

The utility model relates to a wireless field of charging, in particular to wireless charger.

Background

Along with the popularization of mobile electronic devices such as mobile phones, great convenience is brought to the life of people, the use frequency is higher and higher, the charging technology of the mobile electronic devices is developed at a high speed, and particularly, the wireless charging technology also enters an application stage.

Although the wireless charging to the cell-phone can be realized through magnetic induction's mode to present wireless charger, wireless charger itself needs to be connected the commercial power through the charging wire electricity, and wireless charger can't remove at will, needs cooperate according to the length of charging wire, just so bring the inconvenience in using.

In order to realize the free movement of the wireless charger and get rid of the interference of a charging wire, a lithium battery can be added in the wireless charger. Even if the common wireless charger is not charged, the transmitting coil module is continuously scanned, and when the mobile terminal is placed on the wireless charger, the transmitting coil module is mutually coupled when scanning the receiving coil in the mobile terminal, so that wireless charging is realized. However, considering that the electric quantity of the lithium battery is limited, if the scanning of the transmitting coil module is maintained all the time, the electric quantity of the wireless charging with the lithium battery inside is extremely quickly lost, and the electric quantity is wasted.

In order to solve the above problems, it is a common practice to provide a switch on a wireless charger, when the wireless charger is not connected to an external power supply (charging head), a transmitting coil module of the wireless charger does not work, so as to avoid power consumption, when wireless charging is required, the switch is pressed, the wireless transmitting coil module starts scanning, and if wireless charging is not performed for a while, the transmitting coil module stops working. However, such an operation mode still causes a problem that the user needs to perform an additional operation (turn on the switch) when using the wireless charger, thereby degrading the use experience.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a novel wireless charger.

In some embodiments, the detection element is a tact switch or a hall switch, the detection element is electrically connected to the energy storage unit, and when the electronic device is placed on the wireless charger for wireless charging, the electronic device touches the detection element; or, the detection element is a sensor, the detection element is electrically connected with the circuit board, and when the electronic device is placed on the wireless charger for wireless charging, the detection element detects the electronic device.

In one embodiment, the tact switch is a mechanical tact switch.

In an embodiment, when the electronic device leaves the wireless charger, the energy storage unit continues to supply power for a period of time, the transmitting coil module continues to scan, and if the wireless charging is not performed within the period of time, the energy storage unit stops supplying power, and the transmitting coil module stops working.

In an embodiment, the shell is further provided with a manual switch, and the manual switch is used for manually controlling the energy storage unit to be switched on to supply power to the circuit board and the transmitting coil module when the charging interface is not connected with an external power supply.

In some embodiments, the detection element is disposed on the charging surface.

In some embodiments, a protrusion is disposed on the charging surface, and the detecting element is disposed in the protrusion or disposed on the surface of the protrusion; the bulges are anti-skid cushion blocks.

In some embodiments, the housing includes a support plate and a backup plate connected to the support plate, the charging surface is located on the backup plate, and one end of the support plate near the charging surface forms a support portion for supporting the electronic device, and the detection element is disposed on the support portion.

In some embodiments, a protrusion is disposed on the supporting portion, and the detecting element is disposed in the protrusion or on a surface of the protrusion; the bulges are anti-skid cushion blocks.

To sum up, the utility model provides a wireless charger. The energy storage unit is additionally arranged in the wireless charger, a charging interface on the shell is electrically connected with the circuit board, the circuit board is respectively electrically connected with the energy storage unit and the transmitting coil module, and the energy storage unit is a rechargeable battery. When not being connected with an external power supply, the battery can independently supply power to the circuit board and the transmitting coil module, thereby really realizing wireless charging. The detection element is arranged on the shell, and when the electronic equipment is placed on the wireless charger for charging, the detection element is triggered, so that the battery receives the signal and starts power supply, and the transmitting coil module starts to work; when the electronic equipment leaves the wireless charger, the detection element is triggered again, and the transmitting coil module stops working. The utility model discloses can use the wireless charger at multiple form, for example flat structure, vertical structure or can stand the wireless charger of flat structure for the user can be at anytime and anywhere wireless charging, also can save battery electric power to a great extent simultaneously, prolongs the life of transmitting coil module, brings very big convenience for the user, promotes user experience, is suitable for popularization and application.

Drawings

Fig. 1 is a front perspective view of an embodiment of the wireless charger of the present invention.

Fig. 2 is a rear perspective view of the wireless charger of fig. 1.

Fig. 3 is an exploded view of the wireless charger of fig. 1.

Fig. 4 is a perspective view of another embodiment of the wireless charger of the present invention.

Fig. 5 is an exploded perspective view of the wireless charger of fig. 4.

Fig. 6 is a side cross-sectional view of the wireless charger of fig. 4.

Detailed Description

Before the embodiments are described in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangements of components set forth in the following description or illustrated in the drawings. The invention is capable of embodiments in other forms of implementation. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "including," "comprising," "having," and the like, herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. In particular, when "a certain element" is described, the present invention is not limited to the number of the element being one, and may include a plurality of the elements.

As shown in fig. 1-6, the present invention provides a wireless charger 10, the wireless charger 10 includes a housing 12 and a transmitting coil module 14, a circuit board 16 and an energy storage unit 18 accommodated in the housing 12, the housing 12 is provided with a charging interface 20 and a detection element, the charging interface 20 is used for connecting to an external power source, such as a mains supply or a mobile power supply. The housing 12 has a charging surface 22, and the transmitting coil module 14 is disposed opposite to the charging surface 22 for wirelessly charging an electronic device placed on the charging surface 22. The charging interface 20 is electrically connected to the circuit board 16, the detection element is electrically connected to the circuit board 16, and the circuit board 16 is electrically connected to the transmitting coil module 14 and the energy storage unit 18, respectively. The energy storage unit 18 may be a secondary battery, a capacitor, or the like. In this embodiment, the energy storage unit 18 is a lithium battery.

When the wireless charger 10 is not connected to an external power source, the energy storage unit 18 can supply power to the wireless charger 10 to enable the wireless charger 10 to operate normally, so as to charge the device to be charged, and at this time, the wireless charger 10 can move freely according to the needs of the user without being limited by the position. When the wireless charger 10 is connected to an external power supply, the wireless charger 10 charges the energy storage unit 18 while charging the device to be charged; alternatively, the wireless charger 10 may charge the energy storage unit 18 separately when connected to an external power source.

The detection element may be powered by the energy storage unit 18 when the wireless charger 10 is not connected to an external power source. When a device to be charged is placed on the wireless charger 10 for wireless charging, the detection element detects the device to be charged, so that the energy storage unit 18 supplies power to the circuit board 16 and the transmitting coil module 14 to wirelessly charge the device to be charged. The detecting element may be a tact switch, or a hall switch, or a sensor, where the tact switch is, for example, a mechanical tact switch, and the sensor is, for example, a pressure sensor.

When the detecting element is a tact switch or a hall switch, after the detecting element detects that the electronic device is placed on the wireless charger 10, the energy storage unit 18 receives the detection signal and then turns on power supply, so as to supply power to the circuit board 16 (actually, the transmitting coil module 14 disposed on the circuit board 16) and the transmitting coil module 14, thereby realizing wireless charging of the electronic device. Its advantage is no electric consumption. When the electronic device is placed on the wireless charger 10 for charging, the electronic device inevitably touches the detection element, so that the energy storage unit 18 receives the signal to start power supply, and the transmitting coil module 14 starts to work.

When the detecting element is a sensor, after the sensor detects that the electronic device is placed on the wireless charger, the sensor sends the signal to the control unit on the circuit board 16, and the control unit controls the energy storage unit 18 to turn on power supply so as to supply power to the circuit board 16 (actually, the transmitting coil module 14 disposed on the circuit board 16) and the transmitting coil module 14, so as to wirelessly charge the electronic device. The sensor needs to be powered continuously, which brings about continuous power consumption of the energy storage unit 18, but the power consumption of the sensor is relatively lower than that of the transmitting coil module 14, and the sensor has the advantages of being more sensitive and convenient to use and not easy to damage.

When the electronic device leaves the wireless charger 10, the detecting element is triggered again, at this time, the energy storage unit 18 does not immediately stop supplying power, the energy storage unit 18 continues supplying power for a period of time, which can be set by itself, for example, 5 minutes, the transmitting coil module 14 continues scanning, and when the wireless charging is not performed within the period of time, the energy storage unit 18 stops supplying power, and the transmitting coil module 14 stops working. In the embodiment shown, the detection element is a mechanical tact switch.

The housing 12 is further provided with a manual switch, which is connected to the circuit board 16 and is used for manually controlling the energy storage unit 18 to be turned on when the charging interface 20 is not connected to an external power source, that is, when the wireless charger 10 needs to be used for charging, the manual switch is manually turned on, the energy storage unit 18 starts to supply power, and the transmitting coil module 14 starts to work and charge. If the wireless charging is not achieved after the transmitting coil module 14 works for a period of time, the energy storage unit 18 stops supplying power. The device to be charged is, for example, an electronic device capable of receiving wireless charging, such as a mobile phone and a tablet computer.

The utility model is suitable for a wireless charger of all structural style. The wireless charger of two types will be described below.

In the embodiment shown in fig. 1-3, the wireless charger 10 is a tablet configuration. More specifically, in the present embodiment, the wireless charger 10 is circular, and in other embodiments, the wireless charger 10 may have other shapes. The housing 12 includes an upper housing portion 24 and a lower housing portion 26 that are closed together, the upper housing portion 24 having a receiving cavity 28, and the lower housing portion 26 covering the receiving cavity 28. Transmitting coil module 14, circuit board 16 and energy storage unit 18 all set up in holding the chamber 28, and charging surface 22 is located the upper surface of upper housing portion 24, and charging interface 20 sets up on the side of upper housing portion 24. A plurality of heat dissipation holes 30 are annularly formed on the lower surface of the upper housing portion 24.

The energy storage unit 18, the circuit board 16, and the transmit coil module 14 are sequentially stacked, with the energy storage unit 18 disposed proximate the bottom, lower housing portion 26 of the housing 12 and the transmit coil module 14 disposed proximate the charging surface 22. The detection element is a mechanical tact switch. The charging surface 22 is provided with a protrusion 21, the protrusion 21 being, for example, a non-slip mat, and the detecting element being arranged in the protrusion 21 or on the surface of the protrusion 21. In the present embodiment, the detection element is disposed in the projection 21. When the mobile phone is placed on the wireless charger 10 for charging, the back surface of the mobile phone touches the pressing protrusion 21 to trigger the detection element, so that the energy storage unit 18 starts power supply and controls the transmitting coil module 14 to start working through the circuit board 16 to charge the mobile phone wirelessly. When the mobile phone leaves the wireless charger 10, the detection element is triggered again, at this time, the energy storage unit 18 will not stop supplying power immediately, the energy storage unit 18 will continue supplying power for a period of time, the transmitting coil module 14 continues scanning, and when the wireless charging is not performed within the period of time, the energy storage unit 18 stops supplying power, and the transmitting coil module 14 stops working.

In some embodiments, the battery, the circuit board, and the transmitting coil module may be arranged in other ways (not shown). For example, the circuit board is designed to be circular, a circular through hole is formed in the center of the circuit board, the transmitting coil module is disposed in the circular through hole, the transmitting coil module and the circuit board are stacked above the battery, that is, the battery is disposed near the bottom of the housing, that is, the lower housing portion, and the transmitting coil module and the circuit board are disposed near the charging surface.

In the embodiment shown in fig. 4-6, the wireless charger 10 is in a stand-up configuration. More specifically, the housing 12 includes a support plate 32 and a backup plate 34 integrally connected to the support plate 32, the backup plate 34 being obliquely disposed on the support plate 32, and the charging surface 22 being located on an oblique surface of the backup plate 34. The support plate 32 further includes a bottom cover 36, and the bottom cover 36 is disposed at the bottom of the support plate 32. The energy storage unit 18 and the circuit board 16 are disposed in the support plate 32, for example, the circuit board 16 is stacked above the energy storage unit 18, and the transmitting coil module 14 is disposed in the support plate 34 near the charging surface 22. A manual switch is provided on a side wall of the base 32, and the manual switch includes a button 37 and a switch groove 38 for receiving the button 37.

In this embodiment, the transmitting coil module 14 is a single coil, but the present invention is not limited thereto, and in other embodiments, the transmitting coil module 14 may also adopt a double coil or a three coil, or more coils. The charging interface is not shown in this embodiment.

In some embodiments, the energy storage unit 18 may also be disposed within the support plate 32 and the transmitter coil module 14 and the circuit board 16 are disposed within the backup plate 34, wherein the transmitter coil module 14 is disposed within the backup plate 34 proximate to the charging surface 22.

The detection element is a mechanical tact switch. One end of the support plate 32 near the charging surface 22 is upwardly protruded to form a support portion 33 for supporting the cellular phone, and the detecting element is disposed on the support portion 33. In the embodiment shown, a projection 23 is provided on the support 33, the projection 23 being, for example, a cleat, and the detection element being provided in the projection 23 or on the surface of the projection 23. In the present embodiment, the detection element is disposed in the protrusion 23. When the mobile phone is placed on the wireless charger 10 for charging, the bottom of the mobile phone is placed on the protrusion 23, and then the detection element is pressed, so that the detection element is triggered to enable the energy storage unit 18 to start power supply and control the transmitting coil module 14 to start working through the circuit board 16, and the mobile phone is charged wirelessly. When the mobile phone leaves the wireless charger 10, the detection element is triggered again, at this time, the energy storage unit 18 will not stop supplying power immediately, the energy storage unit 18 will continue supplying power for a period of time, the transmitting coil module 14 continues scanning, and when the wireless charging is not performed within the period of time, the energy storage unit 18 stops supplying power, and the transmitting coil module 14 stops working.

In other embodiments, the sensing element may also be disposed on the charging surface 22.

It should be noted that the present invention is not limited to the setting position of the detecting element in the above embodiments, and in other embodiments, the detecting element may be set at other positions of the housing 12, as long as it can satisfy that the mobile phone can trigger the detecting element when the mobile phone is placed on the wireless charger 10 for charging, and the detecting element can be triggered again when the mobile phone leaves the wireless charger 10.

The concepts described herein may be embodied in other forms without departing from the spirit or characteristics thereof. The particular embodiments disclosed should be considered illustrative rather than limiting. The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description. Any changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. A wireless charger comprises a shell, a transmitting coil module and a circuit board, wherein the shell is provided with a charging surface, the transmitting coil module is arranged right opposite to the charging surface so as to wirelessly charge electronic equipment placed on the charging surface, and the shell is provided with a charging interface used for being connected with an external power supply;

when the electronic equipment is placed on the wireless charger for wireless charging, the detection element detects the electronic equipment, so that the energy storage unit is started to supply power to the circuit board and the transmitting coil module.

2. The wireless charger according to claim 1, wherein the detection element is a tact switch or a hall switch, the detection element is electrically connected to the energy storage unit, and when the electronic device is placed on the wireless charger for wireless charging, the electronic device touches the detection element;

or, the detection element is a sensor, and the detection element is electrically connected with the circuit board.

3. The wireless charger of claim 2 wherein the tact switch is a mechanical tact switch.

4. The wireless charger according to claim 1, wherein when the electronic device leaves the wireless charger, the energy storage unit continues to supply power for a period of time, the transmitting coil module continues to scan, and if the wireless charging is not performed during the period of time, the energy storage unit stops supplying power, and the transmitting coil module stops operating.

5. The wireless charger according to claim 1, wherein the housing is further provided with a manual switch, and the manual switch is used for manually controlling the energy storage unit to be switched on to supply power to the circuit board and the transmitting coil module when the charging interface is not connected with an external power supply.

6. The wireless charger of any one of claims 1 to 5, wherein the detection element is disposed on the charging surface.

7. The wireless charger of claim 6 wherein the charging surface has a protrusion disposed thereon, the sensing element being disposed within or on the surface of the protrusion;

the bulges are anti-skid cushion blocks.

8. The wireless charger according to any one of claims 1 to 5, wherein the housing includes a support plate and a backup plate connected to the support plate, the charging surface is located on the backup plate, and one end of the support plate near the charging surface forms a support portion for supporting the electronic device, the detection element being provided on the support portion.

9. The wireless charger of claim 8 wherein the support portion has a protrusion, and the detecting element is disposed in the protrusion or on the surface of the protrusion;

the bulges are anti-skid cushion blocks.