CN108494058B - Charging box circuit of wireless earphone, wireless earphone and earphone charging communication device - Google Patents
Charging box circuit of wireless earphone, wireless earphone and earphone charging communication device Download PDFInfo
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- CN108494058B CN108494058B CN201810411931.9A CN201810411931A CN108494058B CN 108494058 B CN108494058 B CN 108494058B CN 201810411931 A CN201810411931 A CN 201810411931A CN 108494058 B CN108494058 B CN 108494058B
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- 238000004891 communication Methods 0.000 title claims abstract description 85
- 230000008878 coupling Effects 0.000 claims abstract description 48
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- 238000005859 coupling reaction Methods 0.000 claims abstract description 48
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 47
- 239000003990 capacitor Substances 0.000 claims description 36
- 230000003321 amplification Effects 0.000 claims description 13
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 13
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical group [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 3
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Abstract
The invention discloses a charging box circuit of a wireless earphone, the wireless earphone and an earphone charging communication device, wherein the charging box circuit of the wireless earphone comprises a charging voltage input end, a first voltage stabilizing circuit unit, a first electronic switch, a communication instruction input end, a first coupling circuit unit, a first MCU and a first connecting port; the input end of the communication instruction is connected with the signal input end of the first MCU, the first signal output end of the first MCU is connected with the control end of the first electronic switch, the first end of the first electronic switch is connected with the input end of the charging voltage, the second end of the first electronic switch is connected with the input end of the first voltage stabilizing circuit, the input end of the first coupling circuit is connected with the second signal output end of the first MCU, and the output end of the first voltage stabilizing circuit and the output end of the first coupling circuit are connected with the first connection port. The invention can reduce the design difficulty of the wireless earphone.
Description
Technical Field
The invention relates to the technical field of electronics, in particular to a charging box circuit of a wireless earphone, the wireless earphone and an earphone charging communication device.
Background
In the prior art, when a wireless pogopin type charging earphone or a USB earphone of two ears needs to be charged and communicated, the charging and communication functions of the earphone need to be controlled through a control box, however, the charging and communication of the conventional earphone usually adopts USB communication or USART communication, so that the charging and communication functions of the earphone can be realized only by 4 wires (namely, VCC, D +, D-and GND four wires) when the conventional earphone adopts USB communication. The in-ear wireless earphone has the advantages that due to the fact that the structural space is very small, a USB or 4 contact points (4 contact points are needed when USART communication is adopted, namely VCC, TX, RX and GND four contact points) are arranged in the in-ear wireless earphone with the very small structural space, and accordingly the design difficulty of the earphone is increased.
Disclosure of Invention
The invention mainly aims to provide a charging box circuit of a wireless earphone, aiming at reducing the design difficulty of the wireless earphone.
In order to achieve the above object, the present invention provides a charging box circuit of a wireless headset for charging the wireless headset and sending a communication command to the wireless headset to communicate with the wireless headset, the charging box circuit of the wireless earphone comprises a charging voltage input end for inputting charging voltage, a first voltage stabilizing circuit unit for stabilizing the charging voltage, a first electronic switch for controlling the charging state of the wireless earphone, a communication instruction input end for inputting the communication instruction, a first coupling circuit unit for coupling the communication instruction, a first MCU for controlling the first electronic switch to be in an off state to stop charging the wireless earphone when receiving the communication instruction, and a first connecting port for charging the wireless earphone and communicating with the wireless earphone; wherein:
the communication instruction input end is connected with the signal input end of the first MCU, the first signal output end of the first MCU is connected with the control end of the first electronic switch, the first end of the first electronic switch is connected with the charging voltage input end, the second end of the first electronic switch is connected with the input end of the first voltage stabilizing circuit, the input end of the first coupling circuit is connected with the second signal output end of the first MCU, and the output end of the first voltage stabilizing circuit and the output end of the first coupling circuit are both connected with the first connection port.
Preferably, the first voltage stabilizing circuit includes a first inductor, a first end of the first inductor is an input end of the first voltage stabilizing circuit, the first end of the first inductor is connected to a second end of the first electronic switch, a second end of the first inductor is an output end of the first voltage stabilizing circuit, and the second end of the first inductor is connected to the first connection port.
Preferably, the first coupling circuit includes a first capacitor, a first end of the first capacitor is an input end of the first coupling circuit, the first end of the first capacitor is connected to the second signal output end of the first MCU, a second end of the first capacitor is an output end of the first coupling circuit, and the second end of the first capacitor is connected to the first connection port.
Preferably, the first electronic switch is a PMOS transistor, a gate of the first electronic switch is connected to the first signal output terminal of the first MCU, a source of the first electronic switch is connected to the charging voltage input terminal, and a drain of the first electronic switch is connected to the input terminal of the first voltage regulator circuit.
In addition, in order to achieve the above object, the present invention further provides a wireless headset including a rechargeable battery, a second connection port for inputting a charging voltage and communicating with a charging box circuit of the wireless headset, a second voltage stabilizing circuit for stabilizing the charging voltage, a second coupling circuit for coupling a communication command issued by the charging box circuit of the wireless headset, a driving amplification circuit for driving and amplifying the communication command, a second electronic switch for controlling a charging state of the wireless headset, and a second MCU for detecting the charging voltage and controlling the second electronic switch to be in an off state to stop charging the rechargeable battery when no charging voltage is detected; wherein:
the input end of the second voltage stabilizing circuit and the input end of the second coupling circuit are connected with the second connecting port, the output end of the second voltage stabilizing circuit is connected with the first end of the second electronic switch, the second end of the second electronic switch is respectively connected with the first signal input end of the second MCU and the rechargeable battery, the control end of the second electronic switch is connected with the signal output end of the second MCU, the output end of the second coupling circuit is connected with the input end of the driving amplifying circuit, and the output end of the driving amplifying circuit is connected with the second signal input end of the second MCU.
Preferably, the second voltage stabilizing circuit includes a second inductor, a first end of the second inductor is an input end of the second voltage stabilizing circuit, the first end of the second inductor is connected to the second connection port, a second end of the second inductor is an output end of the second voltage stabilizing circuit, and the second end of the second inductor is connected to the first end of the second electronic switch.
Preferably, the second coupling circuit includes a second capacitor, a first end of the second capacitor is an input end of the second coupling circuit, the first end of the second capacitor is connected to the second connection port, a second end of the second capacitor is an output end of the second coupling circuit, and the second end of the second capacitor is connected to an input end of the driving amplification circuit.
Preferably, the second electronic switch is a PMOS transistor, a gate of the second electronic switch is connected to the signal output terminal of the second MCU, a source of the second electronic switch is connected to the output terminal of the second voltage stabilizing circuit, and a drain of the second electronic switch is connected to the positive electrode of the rechargeable battery.
Preferably, the rechargeable battery is a lithium ion battery.
In addition, in order to achieve the above object, the present invention further provides an earphone charging communication device, which includes a charging box circuit of a wireless earphone and the wireless earphone, where the charging box circuit of the wireless earphone is the charging box circuit of the wireless earphone, the wireless earphone is the wireless earphone, and a first connection port of the charging box circuit of the wireless earphone is connected to a second connection port of the wireless earphone.
The invention provides a charging box circuit of a wireless earphone, which is used for charging the wireless earphone and sending a communication instruction to the wireless earphone to communicate with the wireless earphone, the charging box circuit of the wireless earphone comprises a charging voltage input end for inputting charging voltage, a first voltage stabilizing circuit unit for stabilizing the charging voltage, a first electronic switch for controlling the charging state of the wireless earphone, a communication instruction input end for inputting a communication instruction, a first coupling circuit unit for coupling the communication instruction, a first MCU for controlling the first electronic switch to be in an off state to stop charging the wireless earphone when the communication instruction is received, and a first connecting port for charging the wireless earphone and communicating with the wireless earphone; the communication instruction input end is connected with the signal input end of the first MCU, the first signal output end of the first MCU is connected with the control end of the first electronic switch, the first end of the first electronic switch is connected with the charging voltage input end, the second end of the first electronic switch is connected with the input end of the first voltage stabilizing circuit, the input end of the first coupling circuit is connected with the second signal output end of the first MCU, and the output end of the first voltage stabilizing circuit and the output end of the first coupling circuit are both connected with the first connection port. The charging box circuit of the wireless earphone can realize the charging and communication functions of the wireless earphone through the first connection port, namely the wireless earphone which adopts the charging box circuit of the wireless earphone to carry out charging and communication can realize the charging and communication functions without setting a USB or placing 4 contact points, thereby greatly reducing the design difficulty of the wireless earphone; meanwhile, the invention also has the advantages of simple structure and easy realization.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic circuit diagram of a charging box circuit of a wireless headset according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a wireless headset according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of an embodiment of the earphone charging communication device according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a charging box circuit of a wireless earphone, and fig. 1 is a schematic circuit structure diagram of an embodiment of the charging box circuit of the wireless earphone, and referring to fig. 1, in this embodiment, the charging box circuit 100 of the wireless earphone is used for charging the wireless earphone and sending a communication instruction to the wireless earphone to communicate with the wireless earphone, and the charging box circuit 100 of the wireless earphone includes a charging voltage input terminal VBAT, a first MCU 101, a communication instruction input terminal 102, a first voltage stabilizing circuit unit 103, and a first coupling circuit unit 104, and a first connection port IO 1.
Specifically, in this embodiment, the charging voltage input terminal VBAT is configured to input a charging voltage;
the first voltage stabilizing circuit unit 103 is configured to stabilize the charging voltage;
the first electronic switch S1, configured to control a charging state of the wireless headset;
the communication instruction input end 102 is used for inputting the communication instruction;
the first coupling circuit unit 104 is configured to couple the communication instruction;
the first MCU 101, configured to control the first electronic switch S1 to be in an off state to stop charging the wireless headset when receiving the communication instruction;
the first connection port IO1 is configured to connect with the wireless headset to charge the wireless headset and communicate with the wireless headset.
In this embodiment, the communication command input end 102 is connected to a signal input end of the first MCU 101, a first signal output end B of the first MCU 101 is connected to a control end of the first electronic switch S1, a first end of the first electronic switch S1 is connected to the charging voltage input end VBAT, a second end of the first electronic switch S1 is connected to an input end of the first voltage stabilizing circuit 103, an input end of the first coupling circuit 104 is connected to a second signal output end C of the first MCU 101, and an output end of the first voltage stabilizing circuit 103 and an output end of the first coupling circuit 104 are both connected to the first connection IO port 1.
Specifically, in this embodiment, the first voltage stabilizing circuit 103 includes a first inductor L1, a first end of the first inductor L1 is an input end of the first voltage stabilizing circuit 103, a first end of the first inductor L1 is connected to a second end of the first electronic switch S1, a second end of the first inductor L1 is an output end of the first voltage stabilizing circuit 103, and a second end of the first inductor L1 is connected to the first connection port IO 1.
In this embodiment, the first coupling circuit 104 includes a first capacitor C1, a first end of the first capacitor C1 is an input end of the first coupling circuit 104, a first end of the first capacitor C1 is connected to the second signal output end C of the first MCU 101, a second end of the first capacitor C1 is an output end of the first coupling circuit 104, and a second end of the first capacitor C1 is connected to the first connection port IO 1.
In this embodiment, the first electronic switch S1 is a PMOS transistor, the gate of the first electronic switch S1 is connected to the first signal output end B of the first MCU 101, the source of the first electronic switch S1 is connected to the charging voltage input end VBAT, and the drain of the first electronic switch S1 is connected to the input end of the first voltage regulator circuit 103, that is, the drain of the first electronic switch S1 is connected to the first end of the first inductor L1.
The operation principle of the charging box circuit 100 of the wireless headset of the embodiment is described as follows: when the first connection port IO1 of the charging box circuit 100 of the wireless headset of this embodiment is connected to a wireless headset (not shown), that is, when the wireless headset is inserted into the first connection port IO1 of the charging box circuit 100 of the wireless headset of this embodiment, the rechargeable battery in the wireless headset is in a charging state, that is, the first electronic switch S1 is in a closed state at this time. When the wireless headset is in a charging state, if the signal input end a of the first MCU 101 receives the communication command output by the communication command input end 102 to request communication with the wireless headset, the first signal output end B of the first MCU 101 outputs a corresponding control signal en1 to the control end of the first electronic switch S1 to control the first electronic switch S1 to be turned from a previously closed state (when the wireless headset is charged, the first electronic switch S1 is in a closed state) to an open state, and at this time, the first MCU 101 transmits the communication command to the wireless headset through the second signal output end C of the first MCU 101, the first capacitor C1 and the first connection port IO1, thereby implementing the communication function between the charging box circuit 100 of the wireless headset of this embodiment and the wireless headset.
The charging box circuit 100 of the wireless headset of this embodiment can realize the charging and communication functions of the wireless headset through the first connection port IO1, that is, the wireless headset adopting the charging box circuit 100 of the wireless headset of this embodiment to perform charging and communication can realize the charging and communication functions without setting a USB or placing 4 contact points, thereby greatly reducing the design difficulty of the wireless headset; meanwhile, the charging box circuit 100 of the wireless headset of the present embodiment also has the advantages of simple structure and easy implementation.
Referring to fig. 2, the wireless headset 200 in this embodiment of the invention includes a second connection port IO2, a rechargeable battery 201, a driving amplifier circuit 202, a second electronic switch S2, a second MCU203, a second voltage regulator circuit 204, and a second coupling circuit 205.
Specifically, in this embodiment, the second connection port IO2 is used for connecting with a charging box circuit of a wireless headset to input a charging voltage and communicate with the charging box circuit of the wireless headset;
the second voltage stabilizing circuit 204 is configured to stabilize the charging voltage;
the second coupling circuit 205 is configured to couple a communication instruction sent by a charging box circuit of the wireless headset;
the driving amplification circuit 202 is configured to perform driving amplification processing on the communication instruction;
the second electronic switch S2 is used for controlling the charging state of the wireless headset;
the second MCU203 is configured to detect the charging voltage and control the second electronic switch to be in an off state to stop charging the rechargeable battery when no charging voltage is detected. In this embodiment, the rechargeable battery is a lithium ion battery.
In this embodiment, the input end of the second voltage stabilizing circuit 204 and the input end of the second coupling circuit 205 are both connected to the second connection port IO2, the output end of the second voltage stabilizing circuit 204 is connected to the first end of the second electronic switch S2, the second end of the second electronic switch S2 is connected to the first signal input end of the second MCU203 and the rechargeable battery 201, the control end of the second electronic switch S2 is connected to the signal output end of the second MCU203, the output end of the second coupling circuit 205 is connected to the input end of the driving amplification circuit 202, and the output end of the driving amplification circuit 202 is connected to the second signal input end F of the second MCU 203.
In this embodiment, the second voltage stabilizing circuit 204 includes a second inductor L2, a first end of the second inductor L2 is an input end of the second voltage stabilizing circuit 204, a first end of the second inductor L2 is connected to the second connection port IO2, a second end of the second inductor L2 is an output end of the second voltage stabilizing circuit 204, and a second end of the second inductor L2 is connected to a first end of the second electronic switch S2.
In this embodiment, the second coupling circuit 205 includes a second capacitor C2, a first end of the second capacitor C2 is an input end of the second coupling circuit 205, a first end of the second capacitor C2 is connected to the second connection port IO2, a second end of the second capacitor C2 is an output end of the second coupling circuit 205, and a second end of the second capacitor C2 is connected to the input end of the driving amplifier circuit 202.
In this embodiment, the second electronic switch S2 is a PMOS transistor, a gate of the second electronic switch S2 is connected to the signal output terminal of the second MCU203, a source of the second electronic switch S2 is connected to the output terminal of the second voltage regulator circuit 204 (i.e., the source of the second electronic switch S2 is connected to the second terminal of the second inductor L2), and a drain of the second electronic switch S2 is connected to the positive electrode of the rechargeable battery 201.
The working principle of the wireless headset 200 of the present embodiment is described in detail as follows: when the second connection port IO2 of the wireless headset 200 of this embodiment is inserted into a charging box (not shown) of the wireless headset, the second MCU203 of the wireless headset 200 of this embodiment resets and restarts, so that the rechargeable battery 201 of the wireless headset 200 of this embodiment is in a charging state, when the rechargeable battery 201 is in the charging state, the first signal input terminal D of the second MCU203 detects a charging voltage in the charging line, when the first signal input terminal D of the second MCU203 detects no charging voltage, the signal output terminal E of the second MCU203 outputs a corresponding control signal en2 to the control terminal of the second electronic switch S2 to control the second electronic switch S2 to be in an off state, and when a communication command is input through the second connection port IO2, the communication command is input to the driving amplifier circuit 202 through the second capacitor C2, the driving amplification circuit 202 performs driving amplification processing on the communication instruction and outputs the communication instruction to the second signal input end F of the second MCU203, so that the communication function between the wireless headset 200 and the charging box of the wireless headset of this embodiment is realized. In summary, the second connection port IO2 in the wireless headset 200 of this embodiment realizes multiplexing of a charging line and a communication line of the wireless headset 200 of this embodiment.
The wireless headset 200 of this embodiment can realize the charging and communication functions of the charging box of the wireless headset to the wireless headset 200 of this embodiment through the second connection port IO2, that is, the wireless headset 200 of this embodiment can realize the charging and communication functions without setting a USB or placing 4 contact points, thereby greatly reducing the design difficulty of the wireless headset; meanwhile, the wireless headset 200 of the present embodiment also has the advantages of simple structure and easy implementation.
Fig. 3 is a schematic circuit structure diagram of an embodiment of the headset charging communication device of the present invention, and referring to fig. 1, fig. 2 and fig. 3 together, in this embodiment, the headset charging communication device includes the charging box circuit 100 of the wireless headset (i.e., the charging box circuit of the wireless headset shown in fig. 1) and the wireless headset 200 (i.e., the wireless headset shown in fig. 2), where the first connection port IO1 of the charging box circuit 100 of the wireless headset is connected to the second connection port IO2 of the wireless headset 200. In this embodiment, the structures of the charging box circuit 100 and the wireless headset 200 of the wireless headset can refer to the above embodiments, and are not described herein again.
The working principle of the earphone charging communication device of the embodiment is described as follows: when the second connection port IO2 of the wireless headset 200 is connected to the first connection port IO1 of the charging box circuit 100 of the wireless headset (i.e., after the wireless headset 200 is inserted into a charging box of the wireless headset), the second MCU203 of the wireless headset 200 is reset and restarted first, so that the rechargeable battery 201 of the wireless headset 200 is in a charging state. When the charging battery 201 is in a charging state, if the signal input terminal a of the first MCU 101 in the charging box circuit 100 of the wireless headset receives the communication command input by the communication command input terminal 102 to request communication with the wireless headset 200, the first signal output terminal B of the first MCU 101 in the charging box circuit 100 of the wireless headset outputs a corresponding control signal en1 to the control terminal of the first electronic switch S1 to control the first electronic switch S1 to be changed from a previously closed state (when the charging battery 201 is charged, the first electronic switch S1 is in a closed state) to an open state, when the first electronic switch S1 is opened, the first signal input terminal D of the second MCU203 in the wireless headset 200 detects no charging voltage, and when the first signal input terminal D of the second MCU203 detects no charging voltage, the signal output end E of the second MCU203 outputs a corresponding control signal en2 to the control end of the second electronic switch S2 to control the second electronic switch S2 to be in an off state, at this time, since the first electronic switch S1 and the second electronic switch S2 are both in an off state, at this time, the first MCU 101 in the charging box circuit 100 of the wireless headset transmits the communication command to the second connection port IO2 in the wireless headset 200 through the second signal output end C of the first MCU 101, the first capacitor C1 and the first connection port IO1, the communication command is input to the driving amplification circuit 202 through the second capacitor C2, the driving amplification circuit 202 drives and amplifies the communication command and outputs the communication command to the second signal input end F of the second MCU203, so as to realize the communication function between the charging box circuit 100 of the wireless headset and the wireless headset 200 .
In the earphone charging communication device of this embodiment, after the first connection port IO1 in the charging box circuit 100 of the wireless earphone is connected to the second connection port IO2 in the wireless earphone 200, the charging and communication functions of the charging box circuit 100 of the wireless earphone on the wireless earphone 200 can be realized, that is, the wireless earphone 200 in this embodiment can realize the charging and communication functions without setting a USB or placing 4 contact points, so that the design difficulty of the wireless earphone is greatly reduced; meanwhile, the earphone charging communication device also has the advantages of simple structure and easiness in implementation.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A charging box circuit of a wireless earphone is used for charging the wireless earphone and sending a communication instruction to the wireless earphone to communicate with the wireless earphone, the charging box circuit of the wireless earphone is characterized by comprising a charging voltage input end for inputting charging voltage, a first voltage stabilizing circuit unit for stabilizing the charging voltage, a first electronic switch for controlling the charging state of the wireless earphone, a communication instruction input end for inputting a communication instruction, a first coupling circuit unit for coupling the communication instruction, a first MCU for controlling the first electronic switch to be in an off state to stop charging the wireless earphone when the communication instruction is received, and a first connecting port for charging the wireless earphone and communicating with the wireless earphone; wherein:
the communication instruction input end is connected with the signal input end of the first MCU, the first signal output end of the first MCU is connected with the control end of the first electronic switch, the first end of the first electronic switch is connected with the charging voltage input end, the second end of the first electronic switch is connected with the input end of the first voltage stabilizing circuit, the input end of the first coupling circuit is connected with the second signal output end of the first MCU, and the output end of the first voltage stabilizing circuit and the output end of the first coupling circuit are both connected with the first connection port;
the first coupling circuit comprises a first capacitor, the first end of the first capacitor is the input end of the first coupling circuit, the first end of the first capacitor is connected with the second signal output end of the first MCU, the second end of the first capacitor is the output end of the first coupling circuit, and the second end of the first capacitor is connected with the first connection port;
when the wireless earphone is in a charging state, if the signal input end of the first MCU receives a communication instruction output by the communication instruction input end to request to communicate with the wireless earphone, the first MCU controls the first electronic switch to be in a disconnection state, and the first MCU transmits the communication instruction to the wireless earphone through the second signal output end of the first MCU, the first capacitor and the first connection port.
2. The charging box circuit of wireless earphone according to claim 1, wherein the first voltage stabilizing circuit comprises a first inductor, a first end of the first inductor is an input end of the first voltage stabilizing circuit, a first end of the first inductor is connected with a second end of the first electronic switch, a second end of the first inductor is an output end of the first voltage stabilizing circuit, and a second end of the first inductor is connected with the first connection port.
3. The charging box circuit of wireless earphone according to any of claims 1 to 2, wherein the first electronic switch is a PMOS transistor, the gate of the first electronic switch is connected to the first signal output terminal of the first MCU, the source of the first electronic switch is connected to the charging voltage input terminal, and the drain of the first electronic switch is connected to the input terminal of the first voltage stabilizing circuit.
4. A wireless earphone is characterized by comprising a rechargeable battery, a second connection port, a second voltage stabilizing circuit, a second coupling circuit, a driving amplification circuit, a second electronic switch and a second MCU, wherein the second connection port is used for inputting a charging voltage and communicating with a charging box circuit of the wireless earphone; wherein:
the input end of the second voltage stabilizing circuit and the input end of the second coupling circuit are both connected with the second connecting port, the output end of the second voltage stabilizing circuit is connected with the first end of the second electronic switch, the second end of the second electronic switch is respectively connected with the first signal input end of the second MCU and the rechargeable battery, the control end of the second electronic switch is connected with the signal output end of the second MCU, the output end of the second coupling circuit is connected with the input end of the driving amplifying circuit, and the output end of the driving amplifying circuit is connected with the second signal input end of the second MCU;
when the rechargeable battery is in a charging state, the first signal input end of the second MCU detects charging voltage in a charging circuit, when the first signal input end of the second MCU detects no charging voltage, the second MCU controls the second electronic switch to be in a disconnection state, if a communication instruction is input into the second connecting port, the communication instruction is input into the driving amplification circuit through the second capacitor, and the driving amplification circuit drives, amplifies and outputs the communication instruction to the second signal input end of the second MCU.
5. The wireless earphone according to claim 4, wherein the second voltage regulator circuit comprises a second inductor, a first end of the second inductor is an input end of the second voltage regulator circuit, a first end of the second inductor is connected to the second connection port, a second end of the second inductor is an output end of the second voltage regulator circuit, and a second end of the second inductor is connected to a first end of the second electronic switch.
6. The wireless headset of claim 5, wherein the second coupling circuit comprises a second capacitor, a first terminal of the second capacitor being an input terminal of the second coupling circuit, the first terminal of the second capacitor being connected to the second connection port, a second terminal of the second capacitor being an output terminal of the second coupling circuit, the second terminal of the second capacitor being connected to the input terminal of the driver amplifier circuit.
7. The wireless earphone according to any one of claims 4 to 6, wherein the second electronic switch is a PMOS transistor, the gate of the second electronic switch is connected to the signal output terminal of the second MCU, the source of the second electronic switch is connected to the output terminal of the second voltage stabilizing circuit, and the drain of the second electronic switch is connected to the positive electrode of the rechargeable battery.
8. The wireless headset of claim 4, wherein the rechargeable battery is a lithium ion battery.
9. An earphone charging communication device, comprising a charging box circuit of a wireless earphone and the wireless earphone, wherein the charging box circuit of the wireless earphone is the charging box circuit of the wireless earphone according to any one of claims 1 to 3, the wireless earphone is the wireless earphone according to any one of claims 4 to 8, and the first connection port of the charging box circuit of the wireless earphone is connected with the second connection port of the wireless earphone.
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| CN201810411931.9A CN108494058B (en) | 2018-05-02 | 2018-05-02 | Charging box circuit of wireless earphone, wireless earphone and earphone charging communication device |
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| CN201810411931.9A CN108494058B (en) | 2018-05-02 | 2018-05-02 | Charging box circuit of wireless earphone, wireless earphone and earphone charging communication device |
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| CN109547884A (en) * | 2018-09-29 | 2019-03-29 | 恒玄科技（上海）有限公司 | Charging bluetooth earphone box system and bluetooth headset test macro |
| CN109510267A (en) * | 2018-11-30 | 2019-03-22 | 歌尔股份有限公司 | The charging method of wireless headset, charging box, wireless headset charging system and wireless headset |
| CN109756808B (en) * | 2018-12-14 | 2024-03-19 | 珠海市杰理科技股份有限公司 | Wireless portable electronic device, charging device, system and method |
| CN109660898A (en) * | 2018-12-21 | 2019-04-19 | 成都必盛科技有限公司 | Charging box, earphone and its control method |
| CN109495807A (en) * | 2018-12-26 | 2019-03-19 | 上海与德通讯技术有限公司 | A kind of charging bluetooth earphone box and bluetooth headset |
| CN111697713B (en) * | 2019-03-16 | 2022-04-29 | 炬芯科技股份有限公司 | Wireless earphone charging control method, wireless earphone and charging box |
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| CN107134819B (en) * | 2017-03-30 | 2018-05-08 | 吴钰淳 | The charging/discharging thereof of mobile power, charge-discharge system and charge-discharge system |
| CN107887950A (en) * | 2017-12-11 | 2018-04-06 | 歌尔科技有限公司 | One kind charging and communication common rail system and earphone products |
| CN107948799B (en) * | 2017-12-19 | 2019-08-27 | 歌尔股份有限公司 | Wireless headset and charging box |
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