CN210868122U - Isolating device, wireless earphone charging box and wireless earphone system - Google Patents
Isolating device, wireless earphone charging box and wireless earphone system Download PDFInfo
- Publication number
- CN210868122U CN210868122U CN202020235498.0U CN202020235498U CN210868122U CN 210868122 U CN210868122 U CN 210868122U CN 202020235498 U CN202020235498 U CN 202020235498U CN 210868122 U CN210868122 U CN 210868122U
- Authority
- CN
- China
- Prior art keywords
- charging
- transistor
- module
- connection port
- wireless earphone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses an isolating device, wireless earphone box and wireless earphone system of charging, wherein, isolating device is applied to wireless earphone box of charging, and isolating device includes: the connecting port can be electrically connected with the wireless earphone; the charging module charges the wireless earphone through the connecting port; the isolation module is respectively connected with the charging module and the connecting port and is used for connecting or disconnecting the charging module and the connecting port; and the communication module is connected with the connecting port and is communicated with the wireless earphone through the connecting port. The device makes wireless earphone charge and the automatic switch-over between the communication through keeping apart the module, need not MCU and carries out active control, has improved the reliability of charging or communication greatly.
Description
Technical Field
The utility model relates to a wireless earphone technical field, in particular to isolating device, wireless earphone box and wireless earphone system that charges.
Background
With the continuous popularization of wireless headsets, people have higher and higher requirements on the working efficiency of wireless headsets, and as for charging and communication of wireless headsets, in the related art, the wireless headset is usually switched between a charging mode and a communication mode by a switch, and the switch is actively controlled by a Micro Controller Unit (MCU) so as to communicate with the wireless headset through Vbus pulse signals during communication.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the utility model discloses a first aim at provides an isolating device to make wireless earphone charge and the automatic switch-over between the communication through keeping apart the module, need not MCU active control, improve the reliability of charging or communication greatly.
A second object of the present invention is to provide a wireless headset charging box.
A third object of the present invention is to provide a wireless headset system.
In order to achieve the above object, the utility model discloses a first aspect provides an isolating device is applied to wireless earphone charging box, include: a connection port electrically connectable with a wireless headset; the charging module charges the wireless earphone through the connecting port; the isolation module is respectively connected with the charging module and the connecting port, and is used for connecting or disconnecting the charging module and the connecting port; and the communication module is connected with the connecting port and is communicated with the wireless earphone through the connecting port.
According to the utility model discloses an isolating device, through keeping apart the module switch-on or break off the module of charging and the connection port between be connected, it charges the module and charges for wireless earphone through connection port, and its communication module communicates through connection port and wireless earphone. Therefore, the wireless earphone is automatically switched between charging and communication through the isolation module, and active control of the MCU is not needed, so that the reliability of charging or communication is greatly improved.
In addition, the isolation device according to the above embodiment of the present invention may further have the following additional technical features:
in some examples, the isolation module includes: the comparison unit is connected with the connection port and used for comparing the voltage of the connection port with a reference voltage and outputting a control signal according to a comparison result, wherein the reference voltage is between the communication voltage and the charging voltage of the connection port; the switch unit is respectively connected with the comparison unit, the connection port and the charging module, and the switch unit is used for switching on or switching off the connection between the charging module and the connection port according to the control signal.
In some examples, the comparison unit includes: a first transistor, a control electrode of which is used for inputting the reference voltage, a first electrode of which is connected with the connection port, and a second electrode of which is connected with the switch unit; a first resistor through which a second pole of the first transistor is grounded.
In some examples, the switching unit includes: a second transistor, a first pole of which is connected to the charging module and a second pole of which is connected to the connection port; and a third transistor, wherein a first pole of the third transistor is connected with the control pole of the second transistor, a second pole of the third transistor is grounded, and the control pole of the third transistor is connected with the comparison unit.
In some examples, the switching unit further includes: and a first end of the second resistor is connected with the control electrode of the second transistor, and a second end of the second resistor is connected with a direct-current power supply.
In some examples, the switching unit further includes: and the first end of the capacitor is connected with the first pole of the second transistor, and the second end of the capacitor is grounded.
In some examples, the switching unit further includes: a third resistor through which a control electrode of the third transistor is connected to the comparison unit.
In order to achieve the above object, the utility model discloses the second aspect provides a wireless earphone box that charges, include the utility model discloses the isolating device that the first aspect provided.
According to the utility model discloses a wireless earphone box that charges adopts foretell isolating device, makes wireless earphone charge and the automatic switch-over between the communication through keeping apart the module, need not MCU's active control, has improved the reliability of charging or communication greatly.
To achieve the above object, an embodiment of a third aspect of the present invention provides a wireless headset system, including: wireless earphone with the utility model discloses the wireless earphone box that charges that the embodiment of second aspect provided.
According to the utility model discloses wireless earphone system adopts foretell wireless earphone box of charging, makes wireless earphone charge and the automatic switch-over between the communication through isolation module, need not MCU active control, has improved the reliability of charging or communication greatly.
Drawings
Fig. 1 is a block diagram of an isolation device according to an embodiment of the present invention;
fig. 2 is a block diagram of an isolation device according to an example of the present invention;
fig. 3 is a circuit schematic of a comparison unit according to an example of the present invention;
fig. 4 is a circuit schematic of a switching unit according to an example of the present invention;
fig. 5 is a schematic circuit diagram of an isolation device according to a specific example of the present invention;
fig. 6 is a block diagram of a wireless headset charging box according to an embodiment of the present invention;
fig. 7 is a block diagram of a wireless headset system according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a wireless headset system according to an example of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
It should be noted that, currently, a TWS (True wireless Stereo) headset generally implements charging or communication of a wireless headset through the following scheme: according to the scheme I, communication is achieved through pulse signals of Vbus; switching by using a switch, and switching a path from a charging port to a communication serial port when the charging is not performed so as to realize communication; and the third scheme is that a switch is used for switching, a device of a single-wire-to-I2C (Inter-Integrated Circuit) is added, and communication is carried out through the I2C when charging is not carried out.
However, the above solution has the following disadvantages: the Vbus communication mode is slow in speed, so that the phenomenon that information cannot be synchronously transmitted is caused; mode switching of charging and communication needs to control a switch, and an MCU (micro controller Unit) is often required to perform active control, so that dependence on the MCU is high, and once the MCU is halted, the device may be damaged, resulting in poor reliability of charging or communication. Therefore, the utility model provides a communication isolating device, wireless earphone box and the wireless charging system of charging to solve the wireless earphone among the prior art and charge or the communication reliably thinks relatively poor problem. The charging communication isolation device, the wireless charging earphone box and the wireless charging system according to the embodiments of the present invention are described below with reference to the accompanying drawings.
Fig. 1 is a block diagram of an isolation device according to an embodiment of the present invention. The isolation device is applied to a wireless headset charging box, as shown in fig. 1, the isolation device 100 includes: a connection port 10, a charging module 20, an isolation module 30, and a communication module 40.
Wherein, the connection port 10 can be electrically connected with the wireless earphone; the charging module 20 charges the wireless earphone through the connection port 10; the isolation module 30 is connected to the charging module 20 and the connection port 10, respectively, and the isolation module 30 is used for connecting or disconnecting the connection between the charging module 20 and the connection port 10; the communication module 40 is connected to the connection port 10, and the communication module 40 communicates with the wireless headset through the connection port 10.
Specifically, when the wireless headset needs to be charged, the isolation module 30 may connect the connection between the charging module 20 and the connection port 10, where the connection port 10 may be a contact, so that the charging module 20 charges the wireless headset through the connection port 10; during the charging process, when the wireless headset needs to communicate with the communication module 40, the isolation module 30 can disconnect the connection between the charging module 20 and the connection port 10, so that the communication module 40 communicates with the wireless headset through the connection port 10, even if the wireless headset is switched from the wireless charging state to the communication state. That is to say, the isolation module 30 is used to isolate the charging and communication of the wireless headset, and the charging and communication of the wireless headset are automatically switched, so that the charging and isolation are independent and do not interfere with each other.
When the isolation device 100 of the present invention is connected to the wireless headset, the isolation module 30 performs automatic switching between charging and communication of the wireless headset, and compared with the scheme of implementing communication through Vbus pulse signals in the prior art, the isolation device 100 has faster communication speed, and significantly reduces the switching time from the charging state to the communication state; compared with a scheme of switching between a charging port and a communication serial port through a switch, the isolation device 100 avoids active control through an MCU (microprogrammed control unit), and the reliability of a product is remarkably improved; compared with the scheme of switching through a switch and communicating through the device I2C, the isolation device 100 obviously does not need the I2C, and contributes to reducing the cost of the product. Therefore, the isolation device enables the wireless earphone to be charged and automatically switched between communication through the isolation module, MCU is not needed to be actively controlled, and the reliability of charging or communication is greatly improved.
In one example of the present invention, as shown in fig. 2, the isolation module 30 may include a comparison unit 31 and a switch unit 32. The comparing unit 31 is connected to the connection port 10, and the comparing unit 31 is configured to compare a voltage of the connection port 10 with a reference voltage VBAT, and output a control signal according to a comparison result, where the reference voltage is between a communication voltage and a charging voltage of the connection port 10; the switching unit 32 is connected to the comparing unit 31, the connection port 10, and the charging module 20, respectively, and the switching unit 32 is used to turn on or off the connection between the charging module 20 and the connection port 10 according to a control signal. The control signal may include a charging control signal and a communication control signal, the charging control signal may be a high-level signal, and the communication control signal may be a low-level signal.
Specifically, in practical application, the comparing unit 32 compares the voltage of the connection port 10 with the reference voltage VBAT, and further obtains a comparison result, if the comparison result is that the voltage of the connection port 10 is greater than the reference voltage VBAT, the comparing unit 31 may output a charging control signal to the switching unit 32 according to the comparison result, so that the switching unit 32 switches on the connection between the charging module 20 and the connection port 10 according to the charging control signal, so that the charging module 20 charges the wireless headset through the connection port 10, and the power consumption requirement of the wireless headset is met; if the comparison result is that the voltage of the connection port 10 is less than the reference voltage VBAT, the comparison unit 31 may output a communication control signal to the switch unit 32 according to the comparison result, so that the switch unit 32 disconnects the connection between the charging module 20 and the connection port 10 according to the communication control signal, so that the communication module 40 communicates with the wireless headset through the connection port 10, and the communication process is not interfered by the charging module 20.
The communication voltage of the connection port 10 may be 3V or 1.8V, the charging voltage of the connection port 10 may be 5V, and the voltage range of the reference voltage VBAT may be 3.4V to 4.4V.
For example, the voltage of the reference voltage VBAT is 4V, when the voltage of the connection port 10 is 5V, the comparison circuit 31 determines that 5V is greater than 4V, and then outputs a charging control signal to the switch unit 32, and the switch unit 32 switches on the connection between the charging module 20 and the connection port 10, so that the charging module 20 charges the wireless headset through the connection port 10; when the voltage of the connection port 10 is 3V, the comparison circuit 31 determines that 3V is less than 4V, and then outputs a communication control signal to the switch unit 32, and the switch unit 32 disconnects the connection between the charging module 20 and the connection port 10, so that the communication module 40 communicates with the wireless headset through the connection port 10, and thus, the automatic switching between the charging and the communication of the wireless headset can be realized.
Further, in an example, as shown in fig. 3, the comparing unit 31 may include a first transistor Q1 and a first resistor R1, wherein a control electrode of the first transistor Q1 is used for inputting the reference voltage VBAT, a first electrode of the first transistor Q1 is connected to the connection port 10, and a second electrode of the first transistor Q1 is connected to the switching unit 32; the second pole of the first transistor Q1 is connected to ground GND through a first resistor R1. The first transistor Q2 may be a PNP transistor.
Specifically, the first transistor Q1 is turned on or off according to the voltage of the connection port 10 and the reference voltage VBAT so that the potential of the point a is high level or low level, and the switching unit 32 turns on or off the connection between the charging module 20 and the connection port 10 according to the potential of the point a, that is, the switching unit 32 turns on or off the connection between the charging module 20 and the connection port 10 according to the potential of the point a of the comparison unit 31.
Specifically, if the voltage of the connection port 10 is greater than the reference voltage VBAT, the first transistor Q1 is turned on, and the level of the point a becomes high level, that is, the switching unit 32 receives a high level signal, so that the switching unit 32 turns on the connection between the charging module 20 and the connection port 10, so that the charging module 20 charges the wireless headset through the connection port 10; if the voltage of the connection port 10 is less than the reference voltage VBAT, the first transistor Q1 is turned off, and the level of the point a becomes low level, that is, the switching unit 32 receives a low level signal, so that the switching unit 32 disconnects the connection between the charging module 20 and the connection port 10 to break the charging path.
In one example, as shown in fig. 4, the switching unit 32 may include a second transistor Q2 and a third transistor Q3, wherein a first pole of the second transistor Q2 is connected to the charging module 20, and a second pole of the second transistor Q2 is connected to the connection port 10; a first pole of the third transistor Q3 is connected to the control pole of the second transistor Q2, a second pole of the third transistor Q3 is grounded GND, and a control pole of the third transistor Q3 is connected to the comparison unit 31. The second Transistor Q2 and the third Transistor Q3 may be MOS (Metal Oxide Semiconductor Field Effect Transistor) transistors, the first pole of the second Transistor Q2 may be a source, the second pole of the second Transistor Q2 may be a drain, and the control pole of the second Transistor Q2 may be a gate; the first pole of the third transistor Q3 may be a drain, the second pole of the third transistor Q3 may be a source, and the control pole of the third transistor Q3 may be a gate.
Further, referring to fig. 4, the switching unit 32 may further include a second resistor R2, a first end of the second resistor R2 is connected to the control electrode of the second transistor Q2, and a second end of the second resistor R2 is connected to the dc power supply.
Still further, referring to fig. 5, the switching unit 32 may further include a capacitor C, a first terminal of the capacitor C is connected to the first pole of the second transistor Q2, and a second terminal of the capacitor C is grounded GND.
In this example, referring to fig. 5, the switching unit 32 may further include a third resistor R3, and the control electrode of the third transistor Q3 is connected to the comparing unit 31 through the third resistor R3.
Specifically, referring to fig. 5, when the comparing unit 31 outputs a high level signal, the third transistor Q3 is turned on, and the gate (control electrode) of the second transistor Q2 is pulled down to a low level, so that the second transistor Q2 is turned on to switch on the connection between the connection port 10 and the charging module 20, so that the charging module 20 charges the wireless headset through the connection port 10, wherein noise in the circuit can be filtered out through the capacitor C, and the interference immunity is improved; when the comparison unit 31 outputs a low level signal, the third transistor Q3 is turned off, and the (control electrode) gate of the second transistor Q2 is pulled high, so that the second transistor Q2 is turned off to disconnect the connection between the connection port 10 and the charging module 20, and the charging process of the charging module 20 to the wireless headset is interrupted, so that the isolation device 100 is switched from the charging state to the communication state, even if the communication module 40 communicates with the wireless headset through the connection port 10, and the influence of the capacitor C on the charging path on the communication process is avoided.
In this example, as shown in fig. 5, the communication module 40 may include a chip and a fourth resistor R4, the chip communicating with the connection port 10 and the wireless headset through the fourth resistor R4.
Specifically, when the wireless headset needs to be charged, the voltage on the PWR _ LINE is 5V, which is greater than the reference voltage VBAT (e.g., 4V), so that the first transistor Q1 is turned on, the level of the point a becomes high level, so that the third transistor Q3 is turned on, the gate of the second transistor Q2 is pulled to low level, the second transistor Q2 is also turned on, so that the PWR _ LINE is communicated with the charging module 20, so that the charging module 20 charges the wireless headset; during communication, the voltage on the PWR _ LINE may be 3.3V, which is smaller than the reference voltage VBAT (e.g. 4V), so that the first transistor Q1 is turned off, the level of the point a is changed to a low level, so that the third transistor Q3 is also turned off, the gate of the second transistor Q2 is pulled high, the second transistor Q2 is also turned off, and the path between the PWR _ LINE and the charging module 20 is cut off, so that the chip communicates with the wireless headset through the fourth resistor R4 and the PWR _ LINE, the influence of the capacitor C on the charging LINE on communication is effectively avoided, and the communication reliability is improved.
To sum up, the isolation device of the embodiment of the present invention enables the wireless headset to automatically perform charging or communication through the isolation module, and performs automatic switching between charging and communication without MCU active control, thereby greatly improving the reliability of charging or communication, greatly increasing the communication rate, and avoiding time waste caused by overlong communication time; only the devices such as a resistor, a capacitor and the like need to be added, and the cost is greatly reduced.
Additionally, the utility model also provides a wireless earphone box of charging, figure 6 is according to the utility model discloses a structural block diagram of wireless earphone box of charging of embodiment.
As shown in fig. 6, the wireless headset charging box 1000 includes the isolation device 100 of the present invention.
The utility model discloses wireless earphone box that charges adopts foretell isolating device, makes wireless earphone charge and the automatic switch-over between the communication through keeping apart the module, need not MCU active control, has improved the reliability of charging or communication greatly.
The utility model also provides a wireless earphone system, figure 7 is according to the utility model discloses a wireless earphone system's of embodiment structural block diagram.
As shown in fig. 7, the wireless earphone system 10000 includes a wireless earphone and the wireless earphone charging box 1000 of the present invention. The wireless headset may be a TWS (True wireless Stereo) headset.
In this embodiment, as shown in fig. 8, the first switch SW1 and the second switch SW2 can be connected between the wireless charging box 1000 and the wireless headset, and the connection mode between the first switch SW1 and the second switch SW2 is controlled, so that the charging and communication of the wireless headset can be automatically switched, specifically, when the wireless headset is charged, the first switch SW1 and the second switch SW2 can be controlled to connect the charging path between the isolation device 100 and the wireless headset, so that the isolation device 100 charges the wireless headset; when the wireless headset is in communication, the first switch SW1 and the second switch SW2 can be controlled to disconnect the charging path between the isolation device 100 and the wireless headset and connect the communication path, so that the isolation device 100 and the wireless headset can communicate.
Wherein, wireless earphone charges box 1000 and can include two POGO PIN PINs PIN1 and PIN2, and wireless earphone also can include two POGO PIN PINs PIN3 and PIN3, and when wireless earphone prevented in wireless earphone charges box 1000, POGO PIN PIN on the wireless earphone and POGO PIN PIN on the wireless earphone charges box 1000 can just contact and switch on to realize that wireless earphone charges the connection of box 1000 with wireless earphone.
The utility model discloses wireless earphone system adopts foretell wireless earphone box of charging, makes wireless earphone charge and the automatic switch-over between the communication through isolation module, need not MCU active control, has improved the reliability of charging or communication greatly.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In addition, in the description of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (9)
1. An isolating device applied to a wireless earphone charging box is characterized by comprising:
a connection port electrically connectable with a wireless headset;
the charging module charges the wireless earphone through the connecting port;
the isolation module is respectively connected with the charging module and the connecting port, and is used for connecting or disconnecting the charging module and the connecting port;
and the communication module is connected with the connecting port and is communicated with the wireless earphone through the connecting port.
2. The isolation device of claim 1, wherein the isolation module comprises:
the comparison unit is connected with the connection port and used for comparing the voltage of the connection port with a reference voltage and outputting a control signal according to a comparison result, wherein the reference voltage is between the communication voltage and the charging voltage of the connection port;
the switch unit is respectively connected with the comparison unit, the connection port and the charging module, and the switch unit is used for switching on or switching off the connection between the charging module and the connection port according to the control signal.
3. The isolation device of claim 2, wherein the comparison unit comprises:
a first transistor, a control electrode of which is used for inputting the reference voltage, a first electrode of which is connected with the connection port, and a second electrode of which is connected with the switch unit;
a first resistor through which a second pole of the first transistor is grounded.
4. The isolation device of claim 2, wherein the switching unit comprises:
a second transistor, a first pole of which is connected to the charging module and a second pole of which is connected to the connection port;
and a third transistor, wherein a first pole of the third transistor is connected with the control pole of the second transistor, a second pole of the third transistor is grounded, and the control pole of the third transistor is connected with the comparison unit.
5. The isolation device of claim 4, wherein the switching unit further comprises:
and a first end of the second resistor is connected with the control electrode of the second transistor, and a second end of the second resistor is connected with a direct-current power supply.
6. The isolation device of claim 4, wherein the switching unit further comprises:
and the first end of the capacitor is connected with the first pole of the second transistor, and the second end of the capacitor is grounded.
7. The isolation device of claim 4, wherein the switching unit further comprises:
a third resistor through which a control electrode of the third transistor is connected to the comparison unit.
8. A wireless headset charging box, comprising: the isolation device of any one of claims 1 to 7.
9. A wireless headset system, comprising: a wireless headset and a wireless headset charging box according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020235498.0U CN210868122U (en) | 2020-02-28 | 2020-02-28 | Isolating device, wireless earphone charging box and wireless earphone system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020235498.0U CN210868122U (en) | 2020-02-28 | 2020-02-28 | Isolating device, wireless earphone charging box and wireless earphone system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210868122U true CN210868122U (en) | 2020-06-26 |
Family
ID=71289539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020235498.0U Active CN210868122U (en) | 2020-02-28 | 2020-02-28 | Isolating device, wireless earphone charging box and wireless earphone system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210868122U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022133838A1 (en) * | 2020-12-23 | 2022-06-30 | 惠州市西西艾实业有限公司 | Wireless charging storage box and wireless charging earphone device |
-
2020
- 2020-02-28 CN CN202020235498.0U patent/CN210868122U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022133838A1 (en) * | 2020-12-23 | 2022-06-30 | 惠州市西西艾实业有限公司 | Wireless charging storage box and wireless charging earphone device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9201832B2 (en) | Electronic device with USB interface and method for starting USB communication therefor | |
| US20200076234A1 (en) | Bluetooth headset, charging cabin and charging system thereof | |
| US20130181660A1 (en) | Charge control circuit for usb device | |
| EP2546724B1 (en) | Device and method for charging a master device using a detachable device | |
| CN211579967U (en) | Automatic antenna switching circuit and system | |
| CN101540585A (en) | Amplifier | |
| KR101599203B1 (en) | Earphone and method for realizing automatic recognition switching control of earphone | |
| CN210868122U (en) | Isolating device, wireless earphone charging box and wireless earphone system | |
| KR20110080672A (en) | A circuit for power supply and supplying method thereof | |
| US20150269110A1 (en) | Cable with multiple functions | |
| US8344702B2 (en) | Battery having universal serial bus port | |
| KR20230016687A (en) | Data cables and charging devices | |
| CN213879326U (en) | Isolation switching device, earphone and earphone system | |
| CN111711436A (en) | Power-off and reset circuit and intelligent central control | |
| US20230170899A1 (en) | Hannel circuit and electronic device | |
| CN108197057B (en) | Portable equipment | |
| US9209651B2 (en) | VBUS power switch | |
| CN217640195U (en) | Universal serial bus power delivery type interface and sink device | |
| JP2020127308A (en) | Charge control device and charge control method | |
| US20210157391A1 (en) | True power shedding | |
| CN114157278A (en) | Power MOS drive circuit | |
| CN112833516B (en) | Communication circuit of indoor unit and outdoor unit of air conditioner and air conditioner | |
| CN216053022U (en) | USB OTG power supply switching circuit | |
| CN210958120U (en) | Drive circuit and control system | |
| CN213937740U (en) | Anti-misconduction circuit and switching power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |