CN208656444U - Wireless headset charging box with mobile phone charging function - Google Patents
Wireless headset charging box with mobile phone charging function Download PDFInfo
- Publication number
- CN208656444U CN208656444U CN201821106767.2U CN201821106767U CN208656444U CN 208656444 U CN208656444 U CN 208656444U CN 201821106767 U CN201821106767 U CN 201821106767U CN 208656444 U CN208656444 U CN 208656444U
- Authority
- CN
- China
- Prior art keywords
- charging
- box
- detection circuit
- chip
- wireless headset
- 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
- 238000001514 detection method Methods 0.000 claims abstract description 23
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000001413 cellular effect Effects 0.000 claims 3
- 238000000605 extraction Methods 0.000 abstract description 5
- 238000003780 insertion Methods 0.000 abstract description 5
- 230000037431 insertion Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a kind of wireless headset charging box with mobile phone charging function, including USB interface, detection circuit, micro-control unit and charging chip；Wherein, USB interface, for accessing mobile device and charging to mobile device；Whether detection circuit has the insertion and extraction of mobile device at the USB interface for detecting wireless headset charging box, and the information that will test is transmitted to micro-control unit；Micro-control unit, the information for being detected according to detection circuit, the charging current of control charging chip output switch the charge mode of charging chip；Charging chip, for charging to wireless headset and the mobile device.Using the utility model, it is able to solve the problem of existing wireless headset charging box cannot be to charging of mobile devices such as mobile phones.
Description
Technical Field
The utility model relates to an earphone charging box technical field, more specifically relates to a wireless earphone charging box with cell-phone function of charging.
Background
When the wireless earphone is not powered on, the wireless earphone and the charging box equipment emerging in the market are put into the charging box for charging; the charging box and the wireless earphone are used in a matched mode, and the common earphone is placed into the charging box and is in contact with the elastic sheet in the charging box to complete charging.
The charging box can only charge the wireless earphone, no external USB interface is used for charging other mobile equipment, due to the volume of the wireless earphone, the built-in battery of the earphone is small, the charging current is generally controlled to be about 70mA-85mA, the charging efficiency of the small current for the mobile phone battery is too low, and due to circuit design, interfaces and the like, the mainstream wireless earphone charging box in the market can not charge the mobile equipment such as the mobile phone.
Consequently, for solving the problem that mobile devices such as wireless earphone box of charging can not charge for the cell-phone, the utility model provides a wireless earphone box of charging with cell-phone function of charging.
SUMMERY OF THE UTILITY MODEL
In view of the above problem, the present invention provides a wireless earphone charging box with a mobile phone charging function to solve the problem that the existing wireless earphone charging box cannot charge mobile devices such as mobile phones.
The utility model provides a wireless earphone charging box with function of charging mobile device, which comprises a USB interface, a detection circuit, a micro control unit and a charging chip; wherein,
the USB interface is used for accessing mobile equipment and charging the mobile equipment;
the detection circuit is used for detecting whether the mobile equipment is inserted into or pulled out of a USB interface of the wireless earphone charging box or not and transmitting detected information to the micro control unit;
the micro control unit is used for controlling the charging current output by the charging chip according to the information detected by the detection circuit and switching the charging mode of the charging chip;
the charging chip is used for charging the wireless earphone and the mobile device.
In addition, the preferable structure is that the MOS tube is further included, wherein,
and the MOS tube is used for controlling the conduction or the closing of the charging channel of the wireless earphone.
Further, it is preferable that the charging chip includes two charging modes, wherein,
one mode is: outputting 75 mA-85mA current to charge the wireless earphone;
in another mode: and outputting 500 mA-800 mA current to charge the mobile equipment.
In addition, in the USB interface, a 1.5K ohm resistor is pulled up from the slave device on the D + pin;
the detection circuit is a comparator detection circuit and comprises two filter capacitors and four resistance values;
the four resistance values serve as voltage dividing resistors of a PP3V3 direct-current power supply, so that the voltage V1 at the point A is equal to the voltage V2 at the point B;
the D + pin of the USB is connected to the point A, and when the USB is inserted into the charging box, a 1.5K pull-up resistor is arranged at the point A; at this time, the voltage V1 at point A is greater than the voltage V2 at point B, and the terminal C of the comparator outputs a logic high level.
In addition, the preferable structure is that the micro control unit comprises a GPIO pin of the MCU, and the GPIO pin of the MCU controls the conduction of the MOS transistor and controls the resistance value to change the output of the charging current value of the charging chip.
According to the technical scheme, the wireless earphone charging box with the function of charging the mobile device provided by the utility model realizes the function of detecting the plugging and unplugging of the USB interface by using the comparator circuit; when the USB interface is inserted into the charging box, the micro control unit of the charging box receives a detection signal of the comparator, so that the charging chip is controlled to output a charging current of 500 mA-800 mA, and meanwhile, a channel for charging the earphone by the charging box is closed, so that the wireless earphone is prevented from being damaged due to the charging of a large current; therefore, the problem that the existing wireless earphone charging box cannot charge mobile equipment such as a mobile phone is solved.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description and appended claims, taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 is a schematic diagram of a logical structure of a wireless headset charging box with a function of charging a mobile device according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a USB insertion and extraction detection circuit according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a circuit for controlling the output current of the charging chip by the micro control unit according to the embodiment of the present invention;
fig. 4 is according to the utility model discloses wireless earphone charging box that has the function of charging to mobile device charges reason picture.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
To the problem that the mobile devices such as aforementioned current wireless earphone box of charging that provides can not charge for cell-phone, the utility model provides a wireless earphone box of charging with the cell-phone function of charging, the utility model discloses utilize the comparator circuit to realize that the USB interface inserts and extracts the detection function to the information transmission who detects to little the control unit, little the control unit switches the mode of charging through pulling out of detecting USB and inserts, realizes charging mobile device and wireless earphone.
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In order to explain the utility model provides a wireless earphone charging box's structure with cell-phone function of charging, the structure of wireless earphone charging box with cell-phone function of charging has carried out the exemplary sign from different angles respectively to fig. 1 to 4. Specifically, fig. 1 shows a logical structure of a wireless headset charging box having a function of charging a mobile device according to an embodiment of the present invention; fig. 2 illustrates a USB insertion and extraction detection circuit principle according to an embodiment of the present invention; fig. 3 shows a circuit principle of controlling the output current of the charging chip by the micro control unit according to the embodiment of the present invention; fig. 4 shows the charging principle of the wireless earphone charging box with the function of charging the mobile device according to the embodiment of the present invention.
As shown in fig. 1 to 4 together, the utility model provides a wireless earphone charging box with function of charging to mobile device, including USB interface 110, detection circuit 120, micro control unit 130, charging chip 140, MOS pipe 150.
The USB interface 110 is used to access a mobile device and charge the mobile device;
a detection circuit 120, configured to detect whether a mobile device is inserted into or pulled out from a USB interface of the wireless headset charging box, and transmit detected information to a Micro Control Unit (MCU) 130;
the micro control unit 130 is configured to control the charging current output by the charging chip 140 according to the information detected by the detection circuit 120, and switch the charging mode of the charging chip 140;
and a charging chip 140 for charging the wireless headset 160 and the mobile device 170.
In addition, the MOS 150 is configured to control the on/off of the charging channel of the wireless headset. That is, when the MOS transistor 150 controls the conduction of the charging channel of the wireless headset, it is to control the charging circuit of the mobile device to be closed; when the MOS transistor 150 controls the charging channel of the wireless headset to be closed, the charging circuit of the mobile device is controlled to be on.
The utility model discloses an in the embodiment, the chip that charges includes two kinds of charging modes, wherein, a mode: outputting 75 mA-85mA current to charge the wireless earphone; in another mode: and outputting 500 mA-800 mA current to charge the mobile equipment.
In the embodiment shown in FIG. 2, it is well known that in the USB interface specification, a slave (device) device pulls up a 1.5K ohm resistor on the D + pin; as shown in fig. 2, the comparator detection circuit includes C1 and C2 as filter capacitors, R1, R2, R3 and R4 with resistance of 10K as divider resistors of PP3V3 dc power supply, so that voltage V1 at point a is equal to voltage V2 at point B; the D + pin of the USB is connected to the point A, and when the USB is inserted into the charging box, a pull-up resistor of 1.5K is arranged at the point A; at this time, the voltage V1 at point A is greater than the voltage V2 at point B, and the terminal C of the comparator outputs a logic high level.
In the embodiment shown in fig. 3, the MCU controls the charging chip to output 500 to 800mA of current, including but not limited to controlling the conduction of a plurality of MOS transistors through GPIO pins of the MCU, and further controlling the magnitude of the parallel resistance to change the output of the charging current of the charging chip; in addition, the on and off control of the charging circuit of the wireless earphone and the mobile device includes, but is not limited to, adding a MOS transistor or a switch behind the OUT pin of the charging chip.
As shown in fig. 2 and fig. 3, when the MCU detects a logic high level output from the terminal C of the comparator, the path for charging the wireless headset is closed, and the charging chip is controlled to output a current of 500mA to 800 mA; when the USB cable is pulled off, the MCU no longer detects the logic high level output by the comparator, and at the moment, the MCU controls the charging chip to output 75-85 mA current and conducts a wireless earphone charging path to finish charging the wireless earphone; this process is a process in which the MCU switches the charging mode by detecting the unplugging and plugging of the USB.
In the embodiment shown in fig. 4, the wireless headset charging box with the function of charging the mobile device works as follows: s1: inserting or pulling out the USB;
s2: the detection circuit detects the insertion or extraction of the USB;
s3: the micro control unit judges whether the voltage is high level; when the comparator is inserted, the logic high level is output by the end C of the comparator; if the voltage level is high, go to step S7; if not, go to step S4;
s4: conducting an earphone access;
s5: the charging chip outputs 70-85mA current;
s6: charging the wireless earphone;
s7: closing the earphone access;
s8: the charging chip outputs 500-800mA current;
s9: and charging the mobile equipment terminal.
The aforesaid does the utility model discloses a box that charges specifically how to charge wireless earphone and mobile device to avoid the heavy current to charge for wireless earphone and cause the damage.
It can be seen from the above embodiments that the wireless earphone charging box with the function of charging the mobile device provided by the utility model realizes the function of detecting the insertion and extraction of the USB interface by using the comparator circuit; when the USB interface is inserted into the charging box, the micro control unit of the charging box receives a detection signal of the comparator, so that the charging chip is controlled to output a charging current of 500 mA-800 mA, and a channel for charging the earphone by the charging box is closed; therefore, the problem that the existing wireless earphone charging box cannot charge mobile equipment such as a mobile phone is solved.
The wireless headset charging box having the function of charging the mobile device according to the present invention is described above by way of example with reference to the accompanying drawings. However, it should be understood by those skilled in the art that various modifications can be made to the wireless headset charging box with the function of charging the mobile device provided by the present invention without departing from the contents of the present invention. Therefore, the scope of the present invention should be determined by the content of the appended claims.
Claims (5)
1. A wireless earphone charging box with a mobile phone charging function is characterized by comprising a USB interface, a detection circuit, a micro control unit and a charging chip; wherein,
the USB interface is used for accessing mobile equipment and charging the mobile equipment;
the detection circuit is used for detecting whether the mobile equipment is inserted into or pulled out of a USB interface of the wireless earphone charging box or not and transmitting detected information to the micro control unit;
the micro control unit is used for controlling the charging current output by the charging chip according to the information detected by the detection circuit and switching the charging mode of the charging chip;
the charging chip is used for charging the wireless earphone and the mobile device.
2. The wireless headset charging box with mobile phone charging function of claim 1, further comprising a MOS transistor, wherein,
and the MOS tube is used for controlling the conduction or the closing of the charging channel of the wireless earphone.
3. The wireless headset charging box with cellular phone charging function of claim 1,
the charging chip comprises two charging modes, wherein,
one mode is: outputting 75 mA-85mA current to charge the wireless earphone;
in another mode: and outputting 500 mA-800 mA current to charge the mobile equipment.
4. The wireless headset charging box with cellular phone charging function of claim 1,
in the USB interface, the slave device pulls up a 1.5K ohm resistor on a D + pin;
the detection circuit is a comparator detection circuit and comprises two filter capacitors and four resistance values;
the four resistance values serve as voltage dividing resistors of a PP3V3 direct-current power supply, so that the voltage V1 at the point A is equal to the voltage V2 at the point B;
the D + pin of the USB is connected to the point A, and when the USB is inserted into the charging box, a 1.5K pull-up resistor is arranged at the point A; at this time, the voltage V1 at point A is greater than the voltage V2 at point B, and the terminal C of the comparator outputs a logic high level.
5. The wireless headset charging box with cellular phone charging function of claim 2,
the micro control unit comprises a GPIO pin of the MCU, the GPIO pin of the MCU controls the conduction of the MOS tube and controls the resistance value to change the output of the charging current value of the charging chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821106767.2U CN208656444U (en) | 2018-07-12 | 2018-07-12 | Wireless headset charging box with mobile phone charging function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821106767.2U CN208656444U (en) | 2018-07-12 | 2018-07-12 | Wireless headset charging box with mobile phone charging function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208656444U true CN208656444U (en) | 2019-03-26 |
Family
ID=65784119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821106767.2U Active CN208656444U (en) | 2018-07-12 | 2018-07-12 | Wireless headset charging box with mobile phone charging function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208656444U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110572738A (en) * | 2019-10-08 | 2019-12-13 | 上海爻火微电子有限公司 | wireless earphone charging circuit and wireless earphone box |
| CN112398206A (en) * | 2020-12-04 | 2021-02-23 | 深圳市卓翼科技股份有限公司 | Charging box and charging control method thereof |
-
2018
- 2018-07-12 CN CN201821106767.2U patent/CN208656444U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110572738A (en) * | 2019-10-08 | 2019-12-13 | 上海爻火微电子有限公司 | wireless earphone charging circuit and wireless earphone box |
| CN112398206A (en) * | 2020-12-04 | 2021-02-23 | 深圳市卓翼科技股份有限公司 | Charging box and charging control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10002061B2 (en) | USB interface detector | |
| US8756358B2 (en) | Method and device for identifying universal serial bus (USB) insertion or charger insertion of mobile terminal | |
| CN110829523B (en) | Electronic equipment and reverse charging method | |
| CN106502939B (en) | USB adapter and data transmission equipment | |
| JP2013109410A (en) | Determination circuit | |
| CN104796011A (en) | Charging method, AC adapter, charging managing device and terminal | |
| CN101383627A (en) | Device and method for terminal charger charging, USB charging and data communication | |
| TW200908509A (en) | Power source detection system, charger can provide power source detection and the detection method thereof | |
| CN107643998B (en) | System for realizing OTG and charging dual functions based on intelligent module | |
| CN101882736A (en) | Data transmission switching device for mobile terminal | |
| CN108494075A (en) | Control the method and apparatus and electronic equipment of charging | |
| CN204304549U (en) | Charger and charge management circuit | |
| US10910845B2 (en) | Terminal, power adapter for charging terminal, and charging line for coupling terminal and power adapter | |
| CN207320876U (en) | A kind of charging circuit and charger | |
| CN105071484B (en) | A kind of charging method and device of the terminal with data exchanging function | |
| CN201039411Y (en) | A mobile phone with self-adapted charging device | |
| CN208656444U (en) | Wireless headset charging box with mobile phone charging function | |
| CN203759164U (en) | Circuit for detecting access state of USB load equipment | |
| CN202798035U (en) | Charging mode detection circuit and mobile terminal | |
| CN106856289B (en) | Electronic equipment and circuit thereof, switching equipment and circuit thereof and signal processing system | |
| CN210927185U (en) | Mobile power supply | |
| CN105656092A (en) | Charging method and apparatus | |
| EP2383860B1 (en) | Rapid charging apparatus | |
| CN205863955U (en) | A kind of USB fast charging device of main frame front interface | |
| CN101902061B (en) | Method for controlling connection and disconnection of charge path of battery, circuit and battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |