Wearable device and external power supply device and portable device thereof

Abstract

The present invention belongs to the field of antenna technology, and provides a wearable device and an external power supply device thereof and a portable device, wherein the external power supply device includes a housing, a battery disposed in the housing, and a charging and discharging interface electrically connected to the battery, and the external power supply device also includes a first antenna disposed on the housing, and an antenna interface coupled to the first antenna and used for communicating with the wearable device. The external power supply device applied to the wearable device can provide an external antenna when the wearable device is docked with the external power supply device for charging, thereby avoiding the adverse effects of the wearable device body, metal components of the external power supply device, a base, etc. on the antenna performance of the wearable device, and greatly improving the antenna radiation efficiency of the wearable device.

Description

Technical Field

[0001] The present invention belongs to the field of antenna technology, and in particular relates to a power supply device applied to a wearable device, a wearable device and a portable device. Background Art

[0002] Smart wearable devices have the advantages of being easy to carry, being able to quickly sense needs and timely monitor human health, such as smart watches and smart bracelets. Market demand is increasing day by day, but the functions of smart wearable devices are constantly increasing, which makes power consumption faster, and the battery life issue needs to be paid special attention. At present, in order to solve the battery life issue, an external battery charging device is added to charge the watch. However, the introduction of an external battery has a huge impact on the performance of the antenna, greatly weakening the signal transmission and reception capabilities, resulting in the inability to answer calls normally due to poor signals when the watch is in the external battery state, affecting the user experience. Summary of the invention

[0003] The purpose of the present invention is to provide a power supply device, a wearable device and a portable device applied to a wearable device, aiming to solve the problem that an external battery affects the antenna performance of the wearable device itself.

[0004] A first aspect of the present invention provides an external power supply device for a wearable device, comprising a housing, a battery disposed in the housing, and a charging and discharging interface electrically connected to the battery. The external power supply device also includes a first antenna disposed on the housing, and an antenna interface coupled to the first antenna and used for communicating with the wearable device.

[0005] In one of the embodiments, the charging and discharging interface includes a positive terminal and a negative terminal provided on the housing, and the antenna interface is the negative terminal.

[0006] In one of the embodiments, the antenna interface includes a feeding terminal disposed on the housing.

[0007] In one of the embodiments, the first antenna is an LDS antenna, a PCB antenna or an FPC antenna.

[0008] In one embodiment, the first antenna includes an inverted-F antenna and / or a loop antenna.

[0009] In one embodiment, the operating frequency band of the first antenna includes one or more of 900 MHz, 1800 MHz, 2100 MHz and 2500 MHz.

[0010] A second aspect of the present invention provides a wearable device, comprising a housing, a battery disposed in the housing, a second antenna disposed on the housing, and a charging interface disposed on the housing, and further comprising:

[0011] Controller;

[0012] A wireless transceiver, connected to the controller, for transmitting and receiving antenna signals;

[0013] An external antenna interface, provided on the housing, and used to connect an external first antenna;

[0014] The antenna switching device is connected to the controller and the wireless transceiver, and under the control of the controller, the wireless transceiver is switched on at either the second antenna or the external antenna interface.

[0015] In one of the embodiments, the controller is specifically used to control the antenna switching device to connect the wireless transceiver and the external antenna interface when the charging interface and / or the external antenna interface is connected to an external device.

[0016] In one embodiment, the second antenna is an LDS antenna, a PDS antenna or an FPC antenna.

[0017] In one embodiment, the operating frequency band of the second antenna includes one or more of 900 MHz, 1800 MHz, 2100 MHz and 2500 MHz.

[0018] The third aspect of the present invention provides a portable device, comprising the above-mentioned external power supply device and the above-mentioned wearable device. When the antenna interface of the external power supply device is docked with the external antenna interface of the wearable device, the controller controls the antenna switching device to connect the wireless transceiver and the external antenna interface.

[0019] The external power supply device applied to the wearable device can provide an external antenna when the wearable device is docked with the external power supply device for charging, thereby avoiding the adverse effects of the wearable device body, metal components of the external power supply device, the base, etc. on the antenna performance of the wearable device, thereby greatly improving the antenna radiation efficiency of the wearable device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of an external power supply device applied to a wearable device provided by an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of the structure of an external power supply device applied to a wearable device provided by an embodiment of the present invention;

[0022] Figure 3 A circuit module diagram of a wearable device provided by an embodiment of the present invention;

[0023] Figure 4A waveform and efficiency curve diagram of the resonance of the antenna of a wearable device connected to an external power supply device at a low frequency of 900Mhz provided in an embodiment of the present invention;

[0024] Figure 5 A waveform and efficiency curve diagram of the resonance of the antenna of a wearable device connected to an external power supply device at an intermediate frequency of 1800Mhz provided in an embodiment of the present invention;

[0025] Figure 6 The waveform and efficiency curve diagram of the resonance of the external antenna on the external power supply device of the wearable device connected to the external power supply device provided in the embodiment of the present invention at the low frequency of 900Mhz and the medium frequency of 1800Mhz. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] See also Figure 1 and Figure 2 The external power supply device 10 applied to the wearable device 20 in the embodiment of the present application includes a housing 11, a battery 12 arranged in the housing 11, a charging and discharging interface 13 electrically connected to the battery 12, a first antenna 14 arranged on the housing 11, and an antenna interface 15 coupled to the first antenna 14 and used for communicating with the wearable device 20.

[0028] The first antenna 14, as an external antenna of the wearable device 20, can be arranged on the inner or outer side of the housing 11 of the external power supply device 10. The housing 11 is generally made of insulating material to avoid affecting the antenna performance. The first antenna 14 can be an antenna on the inner or outer surface of the housing 11 made by the Laser Direct Structuring (LDS) process, or an antenna made by the Printing Direct Structuring (PDS) process fixed on the housing 11, or a Flexible Printed Circuit (FPC) antenna fixed on the housing 11. The shape and structure of the first antenna 14 are matched according to the wearable device 20, and can include any one or two of an inverted F antenna and a loop antenna, and of course other forms of antennas. The operating frequency band of the first antenna 14 includes one or more of 900MHz, 1800MHz, 2100MHz and 2500MHz, and the full network frequency band of mobile communications can be implemented. It is understandable that the first antenna 14 can also include a positioning antenna.

[0029] The charging and discharging interface 13 can be a Micro USB interface, a Type-C USB interface, or a Pogo pin, etc., which is matched according to the charging interface of the wearable device 20. In one embodiment, the charging and discharging interface 13 is a Pogo pin, which includes a positive terminal 131 and a negative terminal 132 provided on the housing 11.

[0030] In one embodiment, the negative terminal 132 of the charge and discharge interface 13 of the external power supply device 10 is reused as the antenna interface 15. Figure 1 In another embodiment, the antenna interface 15 of the first antenna 14 is independently provided, including a feed terminal provided on the housing 11, the feed terminal being a Pogo pin, or any conductive member such as a contact spring, a snap-fit ​​structure, etc. Generally, the charge and discharge interface 13 and the antenna interface 15 of the external power supply device 10 are provided at the bottom of the housing 11.

[0031] By introducing the first antenna 14 in the external power supply device 10 as the external antenna of the wearable device 20, when the external power supply device 10 is installed on the wearable device 20, when the own antenna on the wearable device 20 is affected by the external power supply device 10 and has difficulty receiving signals, the good radiation performance of the external antenna can provide the wearable device 20 with good signal reception capability. The wearable device 20 can receive strong signals through the external antenna to meet the user's communication and positioning needs.

[0032] See also Figure 1 and Figure 2 The second aspect of the present invention provides a wearable device 20, including a housing 21, a battery 12 disposed in the housing 21, a second antenna 23 disposed on the housing 21, a charging interface 24 disposed on the housing 21, and an external antenna interface 25 disposed on the housing 11. The wearable device 20 also has a motherboard 26 disposed inside. Figure 3 The main board 26 is provided with a controller 261 , a wireless transceiver 262 and an antenna switching device 263 .

[0033] The controller 261 can adopt a commonly used microprocessor on the market, or a customized chip, which is not limited here; the wireless transceiver 262 is connected to the controller 261, and is used to send and receive antenna signals. The wireless transceiver 262 is a radio frequency processing chip, and can adopt a commonly used chip on the market, or a customized chip; the external antenna interface 25 is used to connect the external first antenna 14, that is, when the external power supply device 10 is installed on the wearable device 20 to charge it, the external antenna interface 25 is connected to the antenna interface 15 of the external power supply device 10 and then coupled to the first antenna 14; the antenna switching device 263 is connected to the controller 261 and the wireless transceiver 262, and under the control of the controller 261, the wireless transceiver 262 is turned on by selecting one of the second antenna 23 and the external antenna interface 25.

[0034] When the external antenna interface 25 is not connected to the external power supply device 10, the controller 261 can control the antenna switching device 263 to connect the wireless transceiver 262 to the second antenna 23, including using its own antenna for communication and positioning; when the external antenna interface 25 is connected to the external power supply device 10, the controller 261 can control the antenna switching device 263 to connect the wireless transceiver 262 to the first antenna 14, including using the external antenna for communication and positioning.

[0035] Specifically, when the charging interface 24 and / or the external antenna interface 25 are connected to an external device, the controller 261 controls the antenna switching device 263 to connect the wireless transceiver 262 and the external antenna interface 25. It can be understood that when the charging interface 24 and / or the external antenna interface 25 of the wearable device 20 are connected to an external device, the controller 261 determines that the wearable device 20 is connected to the external power supply device 10 for charging, and the performance of its own antenna will be affected, so an external antenna needs to be used.

[0036] It should be noted that the charging interface 24 of the wearable device 20 can be connected to the adapter for charging, but the adapter generally does not have an external antenna, nor does it affect the performance of the antenna of the wearable device 20 itself. At this time, a detection rule can be set to determine whether the charging interface 24 is connected to the adapter or the external power supply device 10. If it is an adapter, there is no need to control the antenna switching device 263 to connect the wireless transceiver 262 to the first antenna 14. The way to determine whether the charging interface 24 is connected to the adapter or the external power supply device 10 can be: the controller 261 can determine whether the handshake of the charging protocol with the adapter is successful; or it can be determined by detecting whether the device connected to the charging interface 24 has a communication / data line.

[0037] In one embodiment, the second antenna 23 on the wearable device 20 may also be an LDS antenna, a PCB antenna or an FPC antenna.

[0038] In one embodiment, the operating frequency band of the second antenna 23 includes one or more of 900MHz, 1800MHz, 2100MHz and 2500MHz, which can implement the full network frequency band of mobile communication. It is understandable that the second antenna 23 can also include a positioning antenna.

[0039] The third aspect of the present invention provides a portable device, including the above-mentioned external power supply device 10 and the above-mentioned wearable device 20. When the antenna interface 15 of the external power supply device 10 is docked with the external antenna interface 25 of the wearable device 20, the controller 261 controls the antenna switching device 263 to connect the wireless transceiver 262 and the external antenna interface 25.

[0040] See also Figures 4 to 6 , Figure 4 The curves L11 and L12 in the figure respectively represent the return loss S11 waveform of the antenna 900 working frequency band on the watch body and the efficiency curve changing with frequency. Figure 5 The curves L21 and L22 in the figure respectively represent the return loss S11 waveform of the antenna 1800 working frequency band on the watch body and the efficiency curve changing with frequency. Figure 6 The curves L31 and L32 in the figure respectively represent the return loss S11 waveform of the antenna 900 and 1800 working frequency bands on the external power supply device and the efficiency variation curve with frequency. Figures 4 to 6 From the simulation results, when the wearable device 20 connected to the external power supply device 10 uses its own antenna to radiate signals, the efficiency is -12dB to -14dB in the 900Mhz frequency band, and the efficiency is -10dB to 12dB in the 1800Mhz frequency band, and the radiation efficiency is low. It can be seen that the essential reason for the poor performance of the wearable device 20 connected to the external power supply device 10 is that the external power supply device 10 changes the working environment of the antenna, the resonant frequency of the antenna itself changes, and the external power supply device 10 hinders the transmission and reception of the antenna by the wearable device 20. When the wearable device 20 connected to the external power supply device 10 uses the external antenna of the external power supply device 10 to radiate signals, the radiation efficiency is high in the two frequency bands of 900Mhz and 1800Mhz, the low and medium frequency peak efficiency reaches -5dB, and the antenna has good signal receiving performance. It can be seen from this that the antenna design scheme of the present application avoids the adverse effects of the wearable device 20 body, metal components of the external power supply device 10, the base, etc. on the antenna performance of the wearable device 20 by adding an external antenna to the external power supply device 10, thereby greatly improving the antenna radiation efficiency of the wearable device 20.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An external power supply device for a wearable device, comprising a housing, a battery disposed in the housing, and a charge and discharge interface electrically connected to the battery, characterized in that: The external power supply device further includes a first antenna disposed on the housing, and an antenna interface coupled to the first antenna and used for communicating with the wearable device; The wearable device comprises a housing, a charging interface provided on the housing, and an external antenna interface provided on the housing. A mainboard is also provided inside the wearable device, and a controller, a wireless transceiver, and an antenna switching device are provided on the mainboard. When the charging interface and / or the external antenna interface is connected to an external device, the antenna switching device is controlled to connect the wireless transceiver and the external antenna interface.

2. The external power supply device according to claim 1, characterized in that: The charging and discharging interface includes a positive terminal and a negative terminal arranged on the shell, and the antenna interface is the negative terminal.

3. The external power supply device according to claim 1, characterized in that: The antenna interface includes a feeding terminal disposed on the housing.

4. The external power supply device according to claim 1, characterized in that: The first antenna is an LDS antenna, a PDS antenna or an FPC antenna.

5. The external power supply device according to claim 1 or 4, characterized in that: The first antenna includes an inverted-F antenna and / or a loop antenna.

6. The external power supply device according to claim 1 or 4, characterized in that: The working frequency band of the first antenna includes one or more of 900 MHz, 1800 MHz, 2100 MHz and 2500 MHz.

7. A wearable device, comprising a housing, a battery disposed in the housing, a second antenna disposed on the housing, and a charging interface disposed on the housing, wherein: Also includes: Controller; A wireless transceiver, connected to the controller, for transmitting and receiving antenna signals; An external antenna interface, provided on the housing of the external power supply device, and used to connect an external first antenna; An antenna switching device, connected to the controller and the wireless transceiver, and under the control of the controller, switches the wireless transceiver on either the second antenna or the external antenna interface; The controller is specifically used to control the antenna switching device to connect the wireless transceiver and the external antenna interface when the charging interface and / or the external antenna interface is connected to an external device.

8. The wearable device according to claim 7, wherein: The second antenna is an LDS antenna, a PCB antenna or an FPC antenna; the operating frequency band of the second antenna includes one or more of 900 MHz, 1800 MHz, 2100 MHz and 2500 MHz.

9. A portable device, characterized in that: It comprises the external power supply device as described in any one of claims 1 to 6 and the wearable device as described in claim 7 or 8, when the antenna interface of the external power supply device is docked with the external antenna interface of the wearable device, the controller controls the antenna switching device to connect the wireless transceiver and the external antenna interface.

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