CN218103445U - Charging box circuit of TWS earphone and TWS earphone assembly - Google Patents
Charging box circuit of TWS earphone and TWS earphone assembly Download PDFInfo
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- CN218103445U CN218103445U CN202221675183.3U CN202221675183U CN218103445U CN 218103445 U CN218103445 U CN 218103445U CN 202221675183 U CN202221675183 U CN 202221675183U CN 218103445 U CN218103445 U CN 218103445U
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Abstract
The utility model is suitable for a TWS earphone technical field provides a charging box circuit of TWS earphone, including first earphone positive pole charging point, first earphone negative pole charging point, second earphone positive pole charging point, second earphone negative pole charging point, tank circuit, boost circuit and charging box control circuit, tank circuit with the charging box control circuit is connected; the boosting circuit is respectively connected with the energy storage circuit, the first earphone positive electrode charging point, the first earphone negative electrode charging point, the second earphone positive electrode charging point and the second earphone negative electrode charging point; the charging box control circuit is respectively connected with the first earphone negative electrode charging point and the second earphone negative electrode charging point. The utility model provides a TWS earphone charging box's the great technical problem of consumption.
Description
Technical Field
The utility model belongs to the technical field of the TWS earphone, especially, relate to a charging box circuit and TWS earphone subassembly of TWS earphone.
Background
In the prior art, with the gradual development of TWS (True Wireless Stereo) earphones, a TWS earphone charging box which is used with the TWS earphones to facilitate charging and carrying the TWS earphones is developed more greatly, and the TWS earphones can be charged when the TWS earphones are stored and the electric quantity of the TWS earphones is insufficient.
In order to ensure that the earphones can be charged timely when the earphones are placed into the charging box, no matter whether the TWS earphones are placed into the TWS earphone charging box or not, circuits with charging related functions in the TWS earphone charging box work all the time, and therefore large power consumption is caused.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the present invention provides a charging box circuit of a TWS earphone and a TWS earphone assembly, so as to solve the technical problem of large power consumption of the charging box of the TWS earphone.
The utility model discloses a first aspect of the embodiment provides a charging box circuit of TWS earphone, include:
a first earphone positive charging point;
a first earphone negative charging point;
a second earphone positive charging point;
a second earphone negative charging point;
a tank circuit;
the boost circuit is respectively connected with the energy storage circuit, the first earphone positive electrode charging point, the first earphone negative electrode charging point, the second earphone positive electrode charging point and the second earphone negative electrode charging point;
and the charging box control circuit is respectively connected with the energy storage circuit, the first earphone negative electrode charging point and the second earphone negative electrode charging point, is used for detecting a first current of the first earphone negative electrode charging point and a second current of the second earphone negative electrode charging point, and outputs a sleep control signal to control the booster circuit to stop working and enter a corresponding sleep mode when the first current and the second current are less than or equal to a preset current value.
In a possible implementation manner of the first aspect, the charging box circuit of the TWS headset further includes a wired charging circuit, the charging box control circuit includes a first charging input terminal, an input terminal of the wired charging circuit is connected to an external power supply, and an output terminal of the wired charging circuit is connected to the first charging input terminal of the charging box control circuit;
and the wired charging circuit is used for accessing an external power supply and charging the energy storage circuit.
In a possible implementation manner of the first aspect, the wired charging circuit includes at least one communication interface and a charging overvoltage protection circuit, the communication interface is connected to an input end of the charging overvoltage protection circuit, a connection node of the communication interface is an input end of the wired charging circuit, and an output end of the charging overvoltage protection circuit is an output end of the wired charging circuit;
and the charging overvoltage protection circuit is used for performing overvoltage protection on the charging box control circuit.
In a possible implementation manner of the first aspect, the charging box circuit of the TWS headset further includes a wireless charging circuit, the charging box control circuit includes a second charging input terminal, an output terminal of the wireless charging circuit is connected to the second charging input terminal, and a controlled terminal of the wireless charging circuit is connected to an output terminal of the wired charging circuit;
the wireless charging circuit is used for stopping outputting the power supply signal when the voltage of the output signal of the wired charging circuit is greater than the working voltage; or the like, or a combination thereof,
and the control circuit is used for starting to output a power supply signal when the voltage of the output signal of the wired charging circuit is less than or equal to the working voltage.
In a possible implementation manner of the first aspect, the charging box circuit of the TWS headset further includes a magnetic switch, and the magnetic switch is connected to the charging box control circuit;
the charging box control circuit is also used for detecting the output voltage of the magnetic suction switch and controlling the indicator light circuit to indicate according to the jump of the output voltage.
In a possible implementation manner of the first aspect, the charging box circuit of the TWS headset further includes an indicator light circuit, and the indicator light circuit is connected to the charging box control circuit;
and the indicating lamp circuit is used for indicating the residual electric quantity of the energy storage circuit.
In a possible implementation manner of the first aspect, the charging box circuit of the TWS headset further includes an over-temperature protection circuit, and the over-temperature protection circuit is connected to the charging box control circuit;
the over-temperature protection circuit is used for detecting the working temperature of the charging box control circuit;
and the charging box control circuit is used for controlling the energy storage circuit to stop charging and discharging when the working temperature exceeds a preset temperature value.
A second aspect of the embodiments of the present invention provides a TWS headset assembly, including as described above the charging box circuit, the charging box housing, the first earphone and the second earphone of the TWS headset, the charging box circuit of the TWS headset install in the charging box housing, the charging box housing has a holding cavity for holding the first earphone and the second earphone, the first earphone and/or the second earphone place in when the holding cavity, through the charging box circuit is right the first earphone and/or the second earphone charges.
In a possible implementation manner of the second aspect, the first headset or the second headset includes a bluetooth chip, an antenna, a speaker, a voice microphone, a left channel microphone, a right channel microphone, and a touch element, and the bluetooth chip is connected to the antenna, the speaker, the voice microphone, the left channel microphone, the right channel microphone, and the touch element respectively.
In a possible implementation manner of the second aspect, the first earphone or the second earphone further includes a light sensing element, and the light sensing element is connected to the bluetooth chip.
The embodiment of the utility model provides a through when the box that charges at TWS earphone does not insert first earphone and second earphone, control boost circuit stop work to from voltage conversion department realize the reduction of consumption, solve the great technical problem of consumption of the box that charges of TWS earphone.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic block diagram of a charging box circuit of a TWS headset according to an embodiment of the present invention.
Fig. 2 is a schematic block diagram of a charging box circuit of a TWS headset according to an embodiment of the present invention.
Fig. 3 is a schematic circuit diagram of a wired charging circuit in a charging box circuit of a TWS headset according to an embodiment of the present invention.
Fig. 4 is a schematic circuit diagram of a wireless charging circuit in a charging box circuit of a TWS headset according to an embodiment of the present invention.
Fig. 5 is a schematic block diagram of a TWS headset assembly according to an embodiment of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution in the embodiments of the present invention will be clearly described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
The terms "comprises" and "comprising," and any variations thereof, in the description and claims of this invention and the above-described drawings are intended to cover non-exclusive inclusions. For example, a process, method, or system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
The utility model provides a charging box circuit of TWS earphone, as shown in figure 1, the charging box circuit of TWS earphone includes first earphone positive charging point 401, first earphone negative charging point 402, second earphone positive charging point 403, second earphone negative charging point 404, energy storage circuit 20, boost circuit 30 and charging box control circuit 10, energy storage circuit 20 with charging box control circuit 10 is connected; the boost circuit 30 is respectively connected to the energy storage circuit 20, the first earphone positive charging point 401, the first earphone negative charging point 402, the second earphone positive charging point 403, and the second earphone negative charging point 404; the charging box control circuit 10 is connected to the first earphone negative charging point 402 and the second earphone negative charging point 404, respectively.
The charging box control circuit 10 detects a first current of the first earphone negative charging point 402 and a second current of the second earphone negative charging point 404, and outputs a sleep control signal to control the boosting circuit 30 to stop working when the first current and the second current are less than or equal to a preset current value. Through the process, when the charging box of the TWS earphone is not connected with the first earphone and the second earphone, the booster circuit 30 is controlled to stop working, so that the reduction of power consumption is realized from voltage conversion, and the technical problem of larger power consumption of the charging box of the TWS earphone is solved. In addition, the charging box control circuit 10 also enters a corresponding sleep mode, and controls the charging box control circuit 10 to enter the sleep mode of the chip, so as to further reduce power consumption.
When the charging box normally charges the earphone, the charging box control circuit 10 outputs a corresponding charging control signal when the first current and/or the second current is larger than a second preset current value; when receiving the charging control signal, the boost circuit 30 outputs a charging current to charge the first earphone positive charging point 401 and the second earphone positive charging point 403, and forms a loop with the first earphone negative charging point 402 and the second earphone negative charging point 404 to charge the connected earphones.
Wherein the second preset current value is generally a charging current additionally set to the headset. Or the lowest path current according to the practical application. It should be noted that the sleep mode is implemented by selecting a control chip having a sleep mode, and when the first current and the second current are smaller than or equal to a preset current value, the sleep control signal at this time may be synchronously used as a control signal for controlling the boost circuit 30 to stop working, or may be used as a trigger signal of the sleep mode of the charging box control circuit 10, and when the first current and the second current are smaller than or equal to the preset current value, that is, when the first current and the second current have no input value, the preset current value at this time may be set to 0.1A, so that it may be determined whether the first earphone and the second earphone are connected.
Alternatively, the tank circuit 20 may be composed of a battery or a battery pack.
Alternatively, the boost circuit 30 may be composed of a boost chip, and the model thereof may be selected from SOT23-5.
Alternatively, the charging box control circuit 10 may be composed of a control chip, and its model may be SS881AP.
In a possible implementation manner of the first aspect, referring to fig. 2, the charging box circuit of the TWS earphone further includes a wired charging circuit 50, the charging box control circuit 10 includes a first charging input terminal, an input terminal of the wired charging circuit 50 is connected to an external power supply, and an output terminal of the wired charging circuit 50 is connected to the first charging input terminal of the charging box control circuit 10.
The wired charging circuit 50 is connected to an external power source and charges the energy storage circuit 20 in a wired manner.
In a possible implementation manner of the first aspect, referring to fig. 3, the wired charging circuit 50 includes at least one communication interface 501/J1 and a charging overvoltage protection circuit 502, where the communication interface 501 is connected to an input end of the charging overvoltage protection circuit 502, a connection node of the communication interface 501 is an input end of the wired charging circuit 50, and an output end of the charging overvoltage protection circuit 502 is an output end of the wired charging circuit 50.
The communication interface 501 may include a type-c interface, a usb interface, and other interfaces, and is connected to a power supply through the communication interface 501 for charging. The charging overvoltage protection circuit 502 can protect the charging box and prevent overvoltage from damaging the charging box and the earphone. The charging overvoltage protection circuit 502 can be implemented by an overvoltage protection chip U4. Specifically, the charging overvoltage protection circuit 502 can perform overvoltage protection on the charging box control circuit 10.
In an alternative embodiment, referring to fig. 3, the wired charging circuit 50 may be composed of resistors R4\ R7\ R34\ R35\ R36\ capacitors C12\ C13\ C14, a communication interface J1 and a chip U4, wherein USB5V is an output terminal of the wired charging circuit 50.
In a possible implementation manner of the first aspect, the charging box circuit of the TWS headset further includes a wireless charging circuit 60, the charging box control circuit 10 includes a second charging input terminal, an output terminal of the wireless charging circuit 60 is connected to the second charging input terminal, and a controlled terminal of the wireless charging circuit 60 is connected to an output terminal of the wired charging circuit 50.
When the voltage of the output signal of the wired charging circuit 50 is greater than the working voltage, the wireless charging circuit 60 stops outputting the power supply signal; or, the wireless charging circuit 60 starts to output the power signal when the voltage of the output signal of the wired charging circuit 50 is less than or equal to the operating voltage. In the above scheme, the output signal of the wired charging circuit 50 is creatively used as the trigger signal or the cutoff signal for the wireless charging circuit 60 to stop wireless charging when wired charging is performed, and start wireless charging when no wired charging is performed, so that the situations of overvoltage and overcurrent caused by superposition of two charging modes on the charging box are avoided, and the safety of the charging state is ensured.
Optionally, the wireless charging circuit 60 is composed of a wireless charging chip and a receiving coil, and can implement a wireless charging function. The enable signal of the wireless charging chip is set as the output signal of the wired charging circuit 50, and it should be noted that if the output signal of the wired charging circuit 50 is too large in application, the enable signal can be identified by the wireless charging chip by setting a resistor at the enable terminal to divide or shunt the voltage.
In an alternative embodiment, referring to fig. 4, the wireless charging circuit 60 may be composed of resistors R42\ R43\ R50, capacitors C15\ C16\ C17\ C18\ C19\ C22\ C23\ C24\ C25\ C26\ C27\ C28\ C29-
\ C30\ C32\ C33\ C36 and a chip U5, wherein the USB5V is an enabling terminal WIRELESS _ EN of the WIRELESS charging circuit 60.
In a possible implementation manner of the first aspect, the charging box circuit of the TWS headset further includes a magnetic attraction switch 90, and the magnetic attraction switch 90 is connected to the charging box control circuit 10.
The charging box control circuit 10 can determine the on/off state of the charging box of the TWS headset by detecting the state of the magnetic switch 90, so as to start or disconnect the bluetooth connection and start or stop the charging of the headset according to the on/off state of the magnetic switch 90. In addition, the charging box control circuit is further configured to detect the output voltage of the magnetic switch 90 and control the indicator light circuit to indicate according to the jump of the output voltage.
In a possible implementation manner of the first aspect, the charging box circuit of the TWS headset further includes an indicator light circuit 70, and the indicator light circuit 70 is connected to the charging box control circuit 10.
The indication lamp circuit 70 may indicate the remaining power of the energy storage circuit, and may be set to several white lamps, which may be turned on by different lamps of different numbers according to the remaining power of different energy storage circuits 20, or may be set to several lamps of different colors, and set corresponding relationship between power and color, for example, more than 80% of the remaining power, a bright green lamp, 40% to 80% of a bright yellow lamp, 20% to 40% of a bright orange lamp, and less than 20% of a bright red lamp. The indicator light circuit 70 can be configured according to the above functions, or can be directly implemented by using the indicator light circuit 70 in the prior art, which is not described herein again.
In a possible implementation manner of the first aspect, the charging box circuit of the TWS headset further includes an over-temperature protection circuit 80, and the over-temperature protection circuit 80 is connected to the charging box control circuit 10.
Wherein, the over-temperature protection circuit 80 detects the working temperature of the charging box control circuit; and the charging box control circuit controls the energy storage circuit to stop charging and discharging when the working temperature exceeds a preset temperature value. The over-temperature protection circuit 80 may be disposed close to the energy storage circuit 20 or the control circuit, so as to achieve a better over-temperature protection effect. The specific circuit is generally realized by an NTC.
Corresponding to the charging box circuit of the TWS earphone in the above embodiment, the present application further provides a TWS earphone assembly, as shown in fig. 5, including the charging box circuit of the TWS earphone as described above, a charging box housing, a first earphone and a second earphone, where the charging box circuit of the TWS earphone is installed in the charging box housing, the charging box housing has a receiving cavity for receiving the first earphone and the second earphone, and when the first earphone and/or the second earphone is placed in the receiving cavity, the first earphone and/or the second earphone is charged through the charging box circuit.
It should be noted that, because the utility model discloses TWS earphone subassembly has contained the whole embodiments of foretell TWS earphone's box circuit that charges, consequently the utility model discloses TWS earphone subassembly has all beneficial effects of foretell TWS earphone's box circuit that charges, and it is no longer repeated here.
In a possible implementation manner of the second aspect, the first headset or the second headset includes a bluetooth chip, an antenna, a speaker, a voice microphone, a left channel microphone, a right channel microphone, and a touch element, and the bluetooth chip is connected to the antenna, the speaker, the voice microphone, the left channel microphone, the right channel microphone, and the touch element respectively.
The touch element is arranged on the first earphone or the second earphone, and the control function of multiple methods can be expanded.
In a possible implementation manner of the second aspect, the first earphone or the second earphone further includes a light sensing element, and the light sensing element is connected to the bluetooth chip.
Whether the earphone is inserted into the ear can be detected through the light sensing element, so that the intelligent opening or closing of the sound is realized, the electric quantity consumption caused by forgetting to close the earphone by a user is avoided, and the service life of the first earphone charged once or the second earphone is prolonged.
The above-mentioned embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A charging box circuit for a TWS headset, comprising:
a first earphone positive charging point;
a first earphone negative charging point;
a second earphone positive charging point;
a second earphone negative charging point;
a tank circuit;
the boost circuit is respectively connected with the energy storage circuit, the first earphone positive electrode charging point, the first earphone negative electrode charging point, the second earphone positive electrode charging point and the second earphone negative electrode charging point;
the charging box control circuit is respectively connected with the energy storage circuit, the first earphone negative electrode charging point and the second earphone negative electrode charging point, and is used for detecting a first current of the first earphone negative electrode charging point and a second current of the second earphone negative electrode charging point and outputting a dormancy control signal to control the boosting circuit to stop working when the first current and the second current are smaller than or equal to a preset current value; the charging box control circuit is also used for outputting a corresponding charging control signal when the first current and/or the second current is larger than a preset current value;
the boost circuit is further used for outputting charging current to the first earphone positive electrode charging point and the second earphone positive electrode charging point according to the charging control signal.
2. The charging box circuit of a TWS headset according to claim 1, wherein the charging box circuit of the TWS headset further comprises a wired charging circuit, the charging box control circuit comprises a first charging input, an input of the wired charging circuit is connected to an external power source, and an output of the wired charging circuit is connected to the first charging input of the charging box control circuit;
and the wired charging circuit is used for accessing an external power supply and charging the energy storage circuit.
3. The charging box circuit of the TWS headset according to claim 2, wherein the wired charging circuit comprises at least one communication interface and a charging overvoltage protection circuit, the communication interface is connected to an input terminal of the charging overvoltage protection circuit, a connection node thereof is an input terminal of the wired charging circuit, and an output terminal of the charging overvoltage protection circuit is an output terminal of the wired charging circuit;
and the charging overvoltage protection circuit is used for performing overvoltage protection on the charging box control circuit.
4. The charging box circuit of a TWS headset according to claim 2, wherein the charging box circuit of the TWS headset further comprises a wireless charging circuit, the charging box control circuit comprises a second charging input terminal, an output terminal of the wireless charging circuit is connected to the second charging input terminal, and a controlled terminal of the wireless charging circuit is connected to an output terminal of the wired charging circuit;
the wireless charging circuit is used for stopping outputting the power supply signal when the voltage of the output signal of the wired charging circuit is greater than the working voltage; or the like, or, alternatively,
and the control circuit is used for starting to output a power supply signal when the voltage of the output signal of the wired charging circuit is less than or equal to the working voltage.
5. The charging box circuit of a TWS headset according to claim 1, wherein the charging box circuit of the TWS headset further comprises an indicator light circuit, the indicator light circuit being connected to the charging box control circuit;
and the indicating lamp circuit is used for indicating the residual electric quantity of the energy storage circuit.
6. The charging box circuit of the TWS earphone of claim 5, further comprising a magnetically attracted switch connected to the charging box control circuit;
the charging box control circuit is also used for detecting the output voltage of the magnetic switch and controlling the indicator light circuit to indicate according to the jumping of the output voltage.
7. The charging box circuit of a TWS headset of claim 1, wherein the charging box circuit of the TWS headset further comprises an over-temperature protection circuit, the over-temperature protection circuit being connected to the charging box control circuit;
the over-temperature protection circuit is used for detecting the working temperature of the charging box control circuit;
and the charging box control circuit is used for controlling the energy storage circuit to stop charging and discharging when the working temperature exceeds a preset temperature value.
8. A TWS headset assembly comprising a charging box circuit of a TWS headset according to any of claims 1-3, a charging box housing, a first earpiece and a second earpiece, the charging box circuit of the TWS headset being mounted in the charging box housing, the charging box housing having a receiving cavity for receiving the first earpiece and the second earpiece, the first earpiece and/or the second earpiece being charged by the charging box circuit when the first earpiece and/or the second earpiece are placed in the receiving cavity.
9. The TWS headset assembly of claim 8, wherein the first headset or the second headset comprises a Bluetooth chip, an antenna, a speaker, a voice microphone, a left channel microphone, a right channel microphone, and a touch element, the Bluetooth chip being connected to the antenna, the speaker, the voice microphone, the left channel microphone, the right channel microphone, and the touch element, respectively.
10. The TWS earphone assembly of claim 9 wherein the first earphone or the second earphone further comprises an optical sensing element, the optical sensing element being connected to the Bluetooth chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221675183.3U CN218103445U (en) | 2022-06-30 | 2022-06-30 | Charging box circuit of TWS earphone and TWS earphone assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221675183.3U CN218103445U (en) | 2022-06-30 | 2022-06-30 | Charging box circuit of TWS earphone and TWS earphone assembly |
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| Publication Number | Publication Date |
|---|---|
| CN218103445U true CN218103445U (en) | 2022-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221675183.3U Active CN218103445U (en) | 2022-06-30 | 2022-06-30 | Charging box circuit of TWS earphone and TWS earphone assembly |
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| Country | Link |
|---|---|
| CN (1) | CN218103445U (en) |
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- 2022-06-30 CN CN202221675183.3U patent/CN218103445U/en active Active
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