Wireless charging method and device

Abstract

A wireless charging method includes: acquiring a battery health degree of a target device; judging whether the battery health degree is smaller than a preset health degree; when the health degree of the battery is not less than a preset health degree, charging the target device with first power; and when the battery health degree is smaller than the preset health degree, charging the target device with second power smaller than the first power.

Description

Technical Field

[0001] The present application relates to the field of wireless charging technology, and in particular to a wireless charging method and device. Background Art

[0002] The applications of Near Field Communication (NFC) in wireless charging mainly include NFC wireless charger location tracking, NFC wireless charger automatic switch, NFC wireless charging multi-purpose function, NFC wireless charger safety control and NFC wireless charger interactive function. In the application of near field wireless communication, antennas are usually used as components for sending and receiving wireless signals, and antennas are used to achieve data transmission between wireless chargers and charged devices.

[0003] However, current wireless charging devices usually use a short-range wireless communication antenna to directly obtain the charging information of the device when charging the device, and then charge the device according to the charging power corresponding to the charging information of the device. In this way, if the battery health of the device is low, charging the device directly according to the charging information will cause problems such as shortened battery life, battery overheating, battery overcharging and battery burning. Summary of the invention

[0004] In view of the above, the present application provides a wireless charging method and device.

[0005] According to an embodiment of the present application, a wireless charging device includes a charging module, a signal acquisition module and a control module, wherein the control module is connected to the charging module and the signal acquisition module. The wireless charging device is used to wirelessly charge a target device. The signal acquisition module is used to obtain the battery health of the target device. The control module is used to determine whether the battery health is less than a preset health. When the battery health is not less than the preset health, the charging module is controlled to charge the target device with a first power, and when the battery health is less than the preset health, the charging module is controlled to charge the target device with a second power less than the first power.

[0006] A wireless charging method according to an embodiment of the present application includes: obtaining a battery health of a target device; determining whether the battery health is less than a preset health; when the battery health is not less than the preset health, charging the target device with a first power; and when the battery health is less than the preset health, charging the target device with a second power less than the first power.

[0007] Through the above structure, the wireless charging method and device disclosed in this case determine whether the battery health is less than the default health by obtaining the battery health of the target device. When the battery health of the target device is less than the preset health, the target device is charged with a charging power that is less than the charging power originally applicable to the target device. In this way, compared with the wireless charging method and device that does not adjust the charging strategy according to the battery health of the target device, the wireless charging method and device disclosed in this case can delay battery degradation and thereby increase battery life, and reduce the possibility of overcharging and overheating.

[0008] The above description of the disclosed contents and the following description of the implementation methods are used to demonstrate and explain the spirit and principle of the present application, and to provide a further explanation of the patent application scope of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 FIG. 4 is a functional block diagram of a wireless charging device according to an embodiment of the present application.

[0010] Figure 2 FIG. 4 is a flow chart of a wireless charging method according to an embodiment of the present application.

[0011] Figure 3 FIG. 4 is a flow chart of obtaining target device system information in a wireless charging method according to an embodiment of the present application.

[0012] Description of reference numerals:

[0013] 1: wireless charging device; 11: charging module; 111: short-range wireless communication antenna; 112: charging coil; 12: signal acquisition module; 121: short-range wireless communication chip; 13: control module; 131: microcontroller; 132: charging controller; S11, S12, S13, S14, S21, S22, S23: steps. DETAILED DESCRIPTION

[0014] The detailed features and advantages of the present application are described in detail in the following embodiments, and the content is sufficient to enable anyone familiar with the relevant art to understand the technical content of the present application and implement it accordingly. According to the content disclosed in this specification, the scope of the patent application and the drawings, anyone familiar with the relevant art can easily understand the relevant purposes and advantages of the present application. The following examples are to further explain the viewpoints of the present application in detail, but are not intended to limit the scope of the present application in any way.

[0015] Please refer to Figure 1 , Figure 1 FIG. 1 is a functional block diagram of a wireless charging device according to an embodiment of the present application. Figure 1As shown, the wireless charging device 1 includes a charging module 11 , a signal acquisition module 12 and a control module 13 , wherein the control module 13 is connected to the charging module 11 and the signal acquisition module 12 .

[0016] The charging module 11 is used to wirelessly charge a target device, such as a mobile phone or other electronic device with a wireless charging function. The charging module 11 may include a short-range wireless communication antenna 111 and a charging coil 112. Specifically, the charging module 11 may wirelessly communicate via the short-range wireless communication antenna 111, and may charge the target device via the charging coil 112.

[0017] The signal acquisition module 12 is used to obtain the battery health of the target device. Specifically, the signal acquisition module 12 may include a short-range wireless communication chip 121, a short-range wireless communication antenna 111 connected to the charging module 11, and a control module 13. Further, the short-range wireless communication chip 121 may receive a signal including the battery health of the target device from the target device through the short-range wireless communication antenna 111.

[0018] The control module 13 may include a microcontroller 131 and a charging controller 132, wherein the microcontroller 131 is connected to the charging controller 132 and the short-range wireless communication chip 121 of the signal acquisition module 12, and the charging controller 132 is connected to the charging coil 112 of the charging module 11. The microcontroller 131 is used to determine whether the battery health is less than the preset health, and when the battery health is not less than the preset health, the charging module 11 is controlled by the charging controller 132 to charge the target device with a first power, and when the battery health is less than the preset health, the charging module 11 is controlled to charge the target device with a second power less than the first power. Specifically, the first power may be a power size and specification that meets the current requirements reported by the target device through the Qi protocol, such as an extended power profile (EPP), and the second power may be a power that meets the baseline power profile (BPP). In other words, when the battery health of the target device is normal, the control module 13 can control the charging module 12 to charge the target device according to the original specifications of the target device, and when the battery health of the target device is in a low standard state, the control module 13 adopts a lower power charging strategy.

[0019] The Qi protocol is a wireless charging standard developed by the Wireless Power Consortium (WPC). Its main purpose is to avoid safety and compatibility issues that may arise when using wireless charging products. As wireless charging products become more popular, the market's requirements for charging efficiency have also greatly increased. Therefore, when developing the Qi wireless charging standard, WPC defined the baseline power specification and extended power specification according to the output power. The baseline power specification supports power transmission of 5 watts (W), and the extended power specification supports power transmission with a power range greater than 5W and less than 30W.

[0020] Please refer to Figure 1 and Figure 2 , Figure 2 FIG. 1 is a flow chart of a wireless charging method according to an embodiment of the present application. Figure 2 As shown, the wireless charging method includes step S11: obtaining the battery health of the target device; step S12: determining whether the battery health is less than a preset health; when the determination result of step S12 is "no", executing step S13: charging the target device with a first power; and when the determination result of step S12 is "yes", executing step S14: charging the target device with a second power less than the first power. The above wireless charging method can be applied to Figure 1 The wireless charging device 1 shown in FIG. Figure 1 The wireless charging device 1 shown is used to illustrate Figure 2 The wireless charging method shown.

[0021] In step S11, the microcontroller 131 obtains the battery health of the target device. Specifically, the battery health can be obtained through short-distance wireless communication technology. Further, the battery health of the target device can be obtained by connecting the short-distance wireless communication chip 121 and the short-distance wireless communication antenna 111 provided in the charging module 11 to obtain the battery health signal transmitted from the target device.

[0022] In step S12, the microcontroller 131 determines whether the battery health is less than a preset health. Specifically, when the determination result of step S12 is that the battery health is not less than the preset health, step S13 is executed, and when the determination result of step S12 is that the battery health is less than the preset health, step S14 is executed. Further, the preset health can be 20%.

[0023] In step S13, the charging module 11 charges the target device with a first power. Specifically, the microcontroller 131 can control the charging coil 112 provided in the charging module 11 to charge the target device with the first power. Further, the first power can meet the current required power size and specification (such as EPP) reported by the target device through the Qi protocol.

[0024] In step S14, the charging module 11 charges the target device with a second power lower than the first power. Specifically, the microcontroller 131 may control the charging coil 112 provided in the charging module 11 to charge the target device with a second power lower than the first power. Further, the second power may comply with the BPP.

[0025] Please refer to Figure 1 and Figure 3 , Figure 3 FIG. 1 is a flow chart of obtaining target device system information of a wireless charging method according to an embodiment of the present application. Figure 3 As shown, in addition to steps S11 to S14, the wireless charging method further includes step S21 executed before step S11: initialization; step S22: determining whether there is a sensing signal; when the determination result of step S22 is "yes", executing step S23: obtaining system information of the target device; and when the determination result of step S12 is "no", executing steps S21 and S22 again.

[0026] In step S21 and step S22, the microcontroller 131 is initialized and determines whether there is a sensing signal. Specifically, when the determination result of step S22 is that the short-range wireless communication antenna 111 senses a signal, step S23 is executed. When the determination result of step S22 is that the short-range wireless communication antenna 111 does not sense a signal, step S21 and the steps subsequent to step S21 are executed again.

[0027] In step S23, the microcontroller 131 obtains the system information of the target device. Specifically, the system information of the target device can be obtained through the signal acquisition module 12, that is, the system information of the target device can be obtained by connecting the short-range wireless communication chip 121 provided in the signal acquisition module 12 and the short-range wireless communication antenna 111 provided in the charging module 11 to obtain the system information transmitted from the target device. Further, after obtaining the system information of the target device, the battery health of the target device can be obtained using the default reading method corresponding to the system information. Furthermore, the system information can indicate the type of system software of the target device. Taking a mobile device as an example, the system information can indicate its mobile operating system, such as an Android operating system or an IOS operating system.

[0028] In one or more embodiments of the present application, the wireless charging method and device of the present application can be applied to vehicle-mounted devices, such as self-driving cars, electric cars, or semi-autonomous cars, etc.

[0029] Through the above structure, the wireless charging method and device disclosed in this case determine whether the battery health is less than the default health by obtaining the battery health of the target device. When the battery health of the target device is less than the preset health, the target device is charged with a charging power that is less than the charging power originally applicable to the target device. In this way, compared with the wireless charging method and device that does not adjust the charging strategy according to the battery health of the target device, the wireless charging method and device disclosed in this case can delay battery degradation and thereby increase battery life, and reduce the possibility of overcharging and overheating.

[0030] Although the present application is disclosed as above with the aforementioned embodiments, it is not intended to limit the present application. Without departing from the spirit and scope of the present application, all changes and modifications are within the scope of patent protection of the present application. Please refer to the attached patent application for the scope of protection defined by the present application.

Claims

1. A wireless charging method, performed by a wireless charging device, characterized in that: The method comprises: Obtaining a battery health of a target device; Determining whether the battery health is less than a preset health; When the battery health is not less than the preset health, charging the target device with a first power; and When the battery health is less than the preset health, the target device is charged with a second power less than the first power.

2. The wireless charging method according to claim 1, characterized in that: The method further comprises: Before obtaining the battery health of the target device, obtaining system information of the target device; The battery health of the target device is obtained by a default reading method corresponding to the system information.

3. The wireless charging method according to claim 1, characterized in that: The battery health status is obtained through short-range wireless communication technology.

4. The wireless charging method according to claim 1, characterized in that: The second power complies with a baseline power profile (BPP).

5. The wireless charging method according to claim 1, characterized in that: The preset health level is 20%.

6. A wireless charging device for wirelessly charging a target device, characterized in that: The device comprises: A charging module; a signal acquisition module, used to obtain a battery health of the target device; and A control module, connected to the charging module and the signal acquisition module, is used to determine whether the battery health is less than a preset health. When the battery health is not less than the preset health, the charging module is controlled to charge the target device with a first power. When the battery health is less than the preset health, the charging module is controlled to charge the target device with a second power less than the first power.

7. The wireless charging device according to claim 6, characterized in that: The control module is also used to obtain system information of the target device through the signal acquisition module before obtaining the battery health of the target device, and the signal acquisition module obtains the battery health of the target device in a default reading method corresponding to the system information.

8. The wireless charging device according to claim 6, characterized in that: The charging module includes a short-range wireless communication antenna, and the signal acquisition module includes: A short-range wireless communication chip is connected to the short-range wireless communication antenna and the control module, and is used for receiving a signal including the battery health status from the target device through the short-range wireless communication antenna.

9. The wireless charging device according to claim 6, characterized in that: The second power complies with a baseline power profile (BPP).

10. The wireless charging device according to claim 6, characterized in that: The preset health level is 20%.

Images