CN209313463U - A kind of earphone charging system - Google Patents
A kind of earphone charging system Download PDFInfo
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- CN209313463U CN209313463U CN201822163958.9U CN201822163958U CN209313463U CN 209313463 U CN209313463 U CN 209313463U CN 201822163958 U CN201822163958 U CN 201822163958U CN 209313463 U CN209313463 U CN 209313463U
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Abstract
The utility model discloses a kind of earphone charging system, including left earphone, right earphone and charging equipment, Hall sensor is provided on the shell of left earphone and right earphone, Hall sensor is electrically connected with the charging module in earphone；Magnet is provided in charging equipment simultaneously；Hall sensor detects magnet polarities when charging, and is converted into electric signal transmission to charging module, and charging module is switched on and off according to the electric signal and electric discharge mould group.The characteristic that Hall sensor is able to detect magnet poles is mainly utilized in the utility model, when left earphone and right earphone only place correct when charging, Hall sensor is transferred to the electric signal of charging module, charging module and electric discharge mould group can just connected, it charges to rechargeable battery, it effectively prevents earphone to put back, caused short-circuit conditions occur.Because of the utility model, the generation that product situation is damaged caused by because of the incorrect grade of charge contact is effectively prevented.
Description
Technical field
The utility model relates to ear phone technology field more particularly to a kind of earphone charging systems.
Background technique
Currently, earphone is had the following problems when being charged using charging equipment: when earphone is connected with charging equipment, being filled
Moment is in electrical contact since there may be pulsed discharges for poor contact, product is caused to damage；When earphone is connected with charging equipment, pole
Property reversely will lead to product short circuit, electric current is very big, has serious damage and security risk to product；Power supply is unstable when product is run
It is fixed, it is likely to result in serious system problem.
Utility model content
In view of the above deficiencies, the technical problem to be solved by the utility model is to provide a kind of earphone charging system, this is
System only just starts to charge after earphone and charging equipment correct placement, caused by effectively preventing because of the incorrect grade of charge contact
The case where damaging product occurs.
In order to solve the above technical problems, the technical solution of the utility model is:
A kind of earphone charging system, including left earphone, right earphone and charging equipment, in the left earphone and the right earphone
Portion has same circuits structure, and the circuit structure includes the rechargeable battery and charging module of electrical connection；The charging equipment packet
Include two containing cavities and electric discharge mould group；It is provided with Hall sensor on the left earphone and the shell of the right earphone, institute
Hall sensor is stated to be electrically connected with the corresponding charging module；Magnet is provided in the charging equipment, the magnet is located at
Between two containing cavities；The Hall sensor detects the magnet polarities when charging, and is converted into electric signal transmission to institute
Charging module is stated, the charging module is switched on and off according to the electric signal and the electric discharge mould group.
Preferred embodiment is that the charging module includes for preventing the Hall sensor from being caused accidentally to grasp by external magnetic field interference
The delay circuit of work.
Preferred embodiment is, the charging module includes earphone main control chip, fills to described for exporting handshake pulse signal
The pulse signal circuit of electric equipment, for the external end earphone DOCK+ and for the external end earphone DOCK-；The pulse
The enable end of signal circuit is electrically connected with the earphone main control chip, and power end is connect with the anode of the rechargeable battery, is exported
End is connect with the end the earphone DOCK+；The end the earphone DOCK- and the negative electrode of chargeable battery are grounded.
Preferred embodiment is that the pulse signal circuit includes the decompression chip for exporting 1.8V handshake pulse signal.
Preferred embodiment is that the output end of the Hall sensor is connect with the earphone main control chip, the hall sensing
The power end of device is connect with the rechargeable battery anode.
Preferred embodiment is that the charging module further includes charging chip, the input terminal of the charging chip and the earphone
The connection of the end DOCK+, output end are connect with the anode of the rechargeable battery, and feedback end is connect with the earphone main control chip.
Preferred embodiment is, the electric discharge mould group include equipment main control chip, switching circuit, discharge battery, for external
The end equipment DOCK+ and for the external end equipment DOCK-；The equipment main control chip is connect with the end the equipment DOCK+ to be come
Receive handshake pulse signal；The enable end of the switching circuit is electrically connected with the equipment main control chip, and output end is set with described
The standby end DOCK+ connects, and two input terminals are electrically connected with the anode of the discharge battery and the equipment main control chip respectively；It is described to put
The cathode of battery and the end the equipment DOCK- are grounded, and the end the equipment DOCK- detachably connects with the end the earphone DOCK-
It connects, the end the equipment DOCK+ is detachably connected with the end the earphone DOCK+.
Preferred embodiment is that the switching circuit includes analog switch.
Preferred embodiment is that the electric discharge mould group further includes current detection circuit, and the current detection circuit is serially connected in described
Between analog switch and the discharge battery, and the feedback end of the current detection circuit is electrically connected with the equipment main control chip
It connects.
Preferred embodiment is that the magnet is located between two containing cavities.
After adopting the above technical scheme, the beneficial effects of the utility model are:
Due to the earphone charging system of the utility model, including left earphone, right earphone and charging equipment, left earphone and auris dextra
It is provided with Hall sensor on the shell of machine, which is electrically connected with corresponding charging module；Meanwhile charging equipment
Inside it is provided with magnet；Hall sensor detects magnet polarities when charging, and is converted into electric signal transmission to charging module, the charging
Mould group is switched on and off according to the electric signal and electric discharge mould group.The utility model is mainly utilized Hall sensor and is able to detect magnetic
The characteristic of magnetic pole iron, when charging left earphone and right earphone when only placing correct, Hall sensor detection magnet polar transmission is given
The electric signal of charging module can just be such that charging module and electric discharge mould group connects, charge to rechargeable battery, effectively prevent earphone and put
Instead, caused short-circuit conditions occur；Also charge contact moment is solved, since there may be pulsed discharges for poor contact, to production
Product cause to damage.As it can be seen that the earphone charging system of the utility model, only just starts after earphone and charging equipment correct placement
Charging effectively prevents the case where damaging product caused by because of the incorrect grade of charge contact generation.
Since charging module includes for preventing Hall sensor from causing the delay circuit of maloperation by external magnetic field interference；It mentions
High anti-jamming capacity, while solving the problems, such as that power supply shakiness leads to system disorders when operation.
Since charging module includes earphone main control chip, is used for transmission handshake pulse signal to the pulse signal of charging equipment
Circuit, for the external end earphone DOCK+ and for the external end earphone DOCK-；The enable end of pulse signal circuit and ear
The anode of the electrical connection of machine main control chip, power end and rechargeable battery connects, and output end is connect with the end earphone DOCK+；Earphone DOCK-
End is grounded with negative electrode of chargeable battery；Earphone main control chip places correct electric signal in the position for receiving Hall sensor transmission
Afterwards, start pulse signal circuit output pulse signal notifies charging equipment that can connect charging, is further ensured that charging equipment
The reliability of charging.
Since charging module further includes charging chip, the input terminal of charging chip is connect with the end earphone DOCK+, output end with
The anode connection of rechargeable battery, feedback end are connect with earphone main control chip；The charging current that charging chip transmits charging equipment
It is filled in rechargeable battery, and feedback signal is transmitted by feedback end and gives earphone main control chip, make earphone master when in charging progress
Control the output that chip closes pulse signal circuit.
Since electric discharge mould group further includes current detection circuit, current detection circuit be serially connected in analog switch and discharge battery it
Between, and the feedback end of current detection circuit is electrically connected with equipment main control chip；Charging current feedback signal transmission is obtained to equipment
Main control chip, equipment main control chip disconnects well analog switch, charging termination after charging complete.
Detailed description of the invention
Fig. 1 is the functional block diagram of the utility model earphone charging system；
Fig. 2 is the internal circuit diagram of earphone in embodiment；
Fig. 3 is the internal circuit diagram of charging equipment in embodiment；
Fig. 4 is the structural schematic diagram of earphone in the utility model；
Fig. 5 is the structural schematic diagram of charging equipment in the utility model；
In figure: 1- earphone, 2- Hall sensor, 3- charging equipment, 30- containing cavities, 4- magnet, IC1- earphone master control core
Piece, IC2- equipment main control chip, BT1- rechargeable battery, BT2- discharge battery, U1- charging chip, U2- are depressured chip, U3- simulation
Switch.
Specific embodiment
Understand to remove the purpose of this utility model, technical solution and advantage more, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
As Fig. 1 to Fig. 5 jointly shown in, a kind of earphone charging system, including left earphone 1, right earphone 1 and charging equipment 3 is left
There is same circuits structure, circuit structure includes the rechargeable battery BT1 and charging module of electrical connection inside earphone 1 and right earphone 1；
Charging equipment 3 includes two containing cavities 30 and electric discharge mould group；Hall biography is provided on left earphone 1 and the shell of right earphone 1
Sensor 2, Hall sensor 2 are electrically connected with corresponding charging module；Magnet 4 is provided in charging equipment 3, preferred magnet 4 is set
Between two containing cavities 30；Hall sensor 2 detects 4 polarity of magnet when charging, and is converted into electric signal transmission to charging module,
Charging module is switched on and off according to the electric signal and electric discharge mould group.
The utility model is mainly utilized the characteristic that Hall sensor 2 is able to detect 4 magnetic pole of magnet, when charging left earphone 1
It is individually placed in corresponding containing cavities 30 with right earphone 1, the equal detection magnetic of Hall sensor 2 on 1 shell of left earphone 1 and right earphone
The polarity of iron 4, the pole S or N, and after transmitting corresponding electric signal to charging module, when only placing correct, charging module is received
It is compared after corresponding electric signal with presetting electric signal, indicates to place correctly when identical, at this point, charging module ability and electric discharge
Mould group is connected, respectively to the rechargeable battery BT1 charging in left earphone 1 and right earphone 1；Otherwise, it is in an off state, Wu Fachong
Electricity；It is put back to effectively avoid earphone 1, caused short-circuit conditions occur；Also charge contact moment is solved, due to contact
Bad there may be pulsed discharges, cause to damage to product.Therefore the utility model 1 charging system of earphone, earphone 1 with fill
It is just started to charge after 3 correct placement of electric equipment, effectively avoids the case where losing product because of charging generation.
Charging module includes for preventing Hall sensor 2 from causing the delay of maloperation by external magnetic field interference in the present embodiment
Circuit；Hall sensor 2 may be interfered in product placement process by external magnetic field, the delay time of settable delay circuit
For 2s, the identical electric signal of 2 continuous transmission of Hall sensor in 2S just indicates that earphone 1 is placed correctly, charging module and electric discharge
Mould group is connected；Otherwise disconnect, so that anti-interference ability is improved, meanwhile, shakiness of powering when solving operation causes system disorderly
Random problem.
As shown in Fig. 2, charging module includes earphone main control chip IC1, for exporting handshake pulse signal to charging equipment 3
Pulse signal circuit, for the external end earphone DOCK+ and for the external end earphone DOCK-, wherein earphone master control core
Piece IC1 includes multiple ends IO；The enable end EN of pulse signal circuit is electrically connected with the end IO1 of earphone main control chip IC1, power end
It is connect with the anode of rechargeable battery BT1, output end is connect with the end earphone DOCK+；The end earphone DOCK- and rechargeable battery BT1 cathode
Ground connection.Preferably, pulse signal circuit includes decompression the chip U2, model 1.8VLDO for exporting 1.8V handshake pulse signal.
The output end OUT of Hall sensor 2 is connect with the end IO2 of earphone main control chip IC1, the power supply of Hall sensor 2
End VCC is connect with rechargeable battery BT1 anode, and ground terminal GND meets GND.
Charging module further includes charging chip U1, and the end input terminal IN and earphone DOCK+ of charging chip U1 is connect, output end
OUT is connect with the anode of rechargeable battery BT1, feedback endIt is connect with the end IO3 of earphone main control chip IC1, ground terminal VSS
It is connect with the ground terminal GND of earphone main control chip IC1.
As shown in figure 3, electric discharge mould group include equipment main control chip IC2, switching circuit, discharge battery BT2, for external
The end equipment DOCK+ and for the external end equipment DOCK-, wherein equipment main control chip IC2 includes multiple ends IO；Equipment master
The end IO9 of control chip IC 2 is connect to receive handshake pulse signal with the end equipment DOCK+；The enable end of switching circuit and equipment master
Chip IC 2 is controlled to be electrically connected, output end connect with the end equipment DOCK+, two input terminals respectively with the anode and equipment of discharge battery BT2
Main control chip IC2 electrical connection；The cathode of discharge battery BT2 and the end equipment DOCK- are grounded, and the end equipment DOCK- and earphone DOCK-
End is detachably connected, and the end equipment DOCK+ is detachably connected with the end earphone DOCK+.Preferred switching circuit includes analog switch U3,
The enable end VCC of specifically DM74LS73AM, analog switch U3 are connect with the end IO6 of equipment main control chip IC2, one input
End S1 is connect with the end IO7 of equipment main control chip IC2, another input terminal D1 is electrically connected with current detection circuit.
Mould group of discharging further includes current detection circuit, and current detection circuit is serially connected in analog switch U3 and discharge battery BT2
Anode between, and the feedback end of current detection circuit is electrically connected with the end IO8 of equipment main control chip IC2.
As shown in Fig. 1 to 5, the earphone charging system working principle of the present embodiment are as follows:
After placement, Hall sensor 2 detect 3 internal magnet 4 of charging equipment polarity, if polarity is correct, indicate to
The earphone 1 of charging is placed correctly, at this point, earphone main control chip IC1 makes to be depressured chip U2 by the enabled decompression chip U2 in the end IO1
Work, by the rechargeable battery BT1 voltage step-down of access at 1.8V, is added to the end earphone DOCK+ by output end, because earphone 1 is placed
Correctly, it connect the end earphone DOCK+ with the end equipment DOCK+, in this way, 1.8V inputs charging equipment 3, tool as handshake pulse signal
Body is the end IO9 that equipment main control chip IC2 is transmitted to by the end equipment DOCK+.And equipment main control chip IC2 receives arteries and veins of shaking hands
After rushing signal, will it is normal in connected in the analog switch U3 disconnected.Specifically: equipment main control chip IC2 is passed by the end IO6
Defeated enable signal connects the internal circuit of analog switch U3 to the end VCC of analog switch U3, and discharge battery BT2, electric current are examined
Slowdown monitoring circuit and IO7 termination are logical, and the output terminals A 1 of analog switch U3 exports charging current.The charging current is by having connected
The end equipment DOCK+ and the end earphone DOCK+ that connect are input to the input terminal IN of charging chip U1, and charging chip U1 is re-filled with charging electricity
Pond BT1 realizes charging.
The feedback end of charging chip U1 simultaneouslyTransmitting charging current, there are corresponding electric signals to give earphone main control chip
IC1, and earphone main control chip IC1 is depressured chip U2 according to the signal-off.
When charging is complete, the feedback end of current detection circuit transmits corresponding electric signal to the IO8 of equipment main control chip IC2
End, and equipment main control chip IC2 then breaks the power end VCC power supply of analog switch U3, is in an off state analog switch U3,
Charging termination.
The utility model is properly placed the corresponding of rear 2 position of Hall sensor with earphone 1 using 4 position of magnet, uses Hall
The pole S N of 2 induced magnet 4 of sensor, and then trigger corresponding function；Magnet 4 is common SN magnet 4.
In addition, the charging module of the utility model and the electric discharge settable individual single-chip microcontroller of mould group, do not limit using ear
The main control chip of machine.
The preferred embodiment of the utility model described above, is not intended to limit the utility model, all practical at this
Made any modification within novel spirit and principle, etc. the improvement of same earphone charging system structure etc., should all include
It is within the protection scope of the utility model.
Claims (10)
1. a kind of earphone charging system, including left earphone, right earphone and charging equipment,
There is same circuits structure, the circuit structure includes the charging electricity of electrical connection inside the left earphone and the right earphone
Pond and charging module；
The charging equipment includes two containing cavities and electric discharge mould group；
It is characterized in that, being provided with Hall sensor, the hall sensing on the left earphone and the shell of the right earphone
Device is electrically connected with the corresponding charging module；Magnet is provided in the charging equipment；
The Hall sensor detects the magnet polarities when charging, and is converted into electric signal transmission to the charging module, institute
Charging module is stated to be switched on and off according to the electric signal and the electric discharge mould group.
2. earphone charging system according to claim 1, which is characterized in that the charging module includes described for preventing
Hall sensor is caused the delay circuit of maloperation by external magnetic field interference.
3. earphone charging system according to claim 2, which is characterized in that the charging module includes earphone master control core
Piece, for export handshake pulse signal to the charging equipment pulse signal circuit, for the external end earphone DOCK+, with
And for the external end earphone DOCK-；
The enable end of the pulse signal circuit is electrically connected with the earphone main control chip, and power end and the rechargeable battery are just
Pole connection, output end are connect with the end the earphone DOCK+；
The end the earphone DOCK- and the negative electrode of chargeable battery are grounded.
4. earphone charging system according to claim 3, which is characterized in that the pulse signal circuit includes output 1.8V
The decompression chip of handshake pulse signal.
5. earphone charging system according to claim 3, which is characterized in that the output end of the Hall sensor with it is described
The connection of earphone main control chip, the power end of the Hall sensor are connect with the rechargeable battery anode.
6. earphone charging system according to claim 3, which is characterized in that the charging module further includes charging chip,
The input terminal of the charging chip is connect with the end the earphone DOCK+, and output end is connect with the anode of the rechargeable battery, is fed back
End is connect with the earphone main control chip.
7. earphone charging system according to claim 3, which is characterized in that the electric discharge mould group includes equipment master control core
Piece, switching circuit, discharge battery, for the external end equipment DOCK+ and for the external end equipment DOCK-；
The equipment main control chip connect to receive handshake pulse signal with the end the equipment DOCK+；
The enable end of the switching circuit is electrically connected with the equipment main control chip, and output end is connect with the end the equipment DOCK+,
Two input terminals are electrically connected with the anode of the discharge battery and the equipment main control chip respectively；
The cathode of the discharge battery and the end the equipment DOCK- are grounded, and the end the equipment DOCK- and the earphone DOCK-
End is detachably connected, and the end the equipment DOCK+ is detachably connected with the end the earphone DOCK+.
8. earphone charging system according to claim 7, which is characterized in that the switching circuit includes analog switch.
9. earphone charging system according to claim 8, which is characterized in that the electric discharge mould group further includes current detecting electricity
Road, the current detection circuit are serially connected between the analog switch and the discharge battery, and the current detection circuit
Feedback end is electrically connected with the equipment main control chip.
10. earphone charging system according to any one of claims 1 to 9, which is characterized in that the magnet is located at described in two
Between containing cavities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822163958.9U CN209313463U (en) | 2018-12-20 | 2018-12-20 | A kind of earphone charging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822163958.9U CN209313463U (en) | 2018-12-20 | 2018-12-20 | A kind of earphone charging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209313463U true CN209313463U (en) | 2019-08-27 |
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ID=67678106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822163958.9U Active CN209313463U (en) | 2018-12-20 | 2018-12-20 | A kind of earphone charging system |
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| Country | Link |
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| CN (1) | CN209313463U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112666382A (en) * | 2020-12-03 | 2021-04-16 | 佳禾智能科技股份有限公司 | Charging current testing device of earphone and/or charging box |
| CN112995851A (en) * | 2021-02-06 | 2021-06-18 | 读书郎教育科技有限公司 | Device and method for adjusting earphone operation by smart bracelet |
| WO2023246727A1 (en) * | 2022-06-21 | 2023-12-28 | 华为技术有限公司 | Earphone assembly |
-
2018
- 2018-12-20 CN CN201822163958.9U patent/CN209313463U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112666382A (en) * | 2020-12-03 | 2021-04-16 | 佳禾智能科技股份有限公司 | Charging current testing device of earphone and/or charging box |
| CN112995851A (en) * | 2021-02-06 | 2021-06-18 | 读书郎教育科技有限公司 | Device and method for adjusting earphone operation by smart bracelet |
| CN112995851B (en) * | 2021-02-06 | 2022-09-20 | 读书郎教育科技有限公司 | Device and method for adjusting earphone operation by smart bracelet |
| WO2023246727A1 (en) * | 2022-06-21 | 2023-12-28 | 华为技术有限公司 | Earphone assembly |
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