CN108879847A - Wireless headset charging system and wireless headset charging method - Google Patents
Wireless headset charging system and wireless headset charging method Download PDFInfo
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- CN108879847A CN108879847A CN201810741445.3A CN201810741445A CN108879847A CN 108879847 A CN108879847 A CN 108879847A CN 201810741445 A CN201810741445 A CN 201810741445A CN 108879847 A CN108879847 A CN 108879847A
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- wireless headset
- charging
- charge
- switch
- earphone
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1025—Accumulators or arrangements for charging
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention discloses a kind of wireless headset charging system and method, the wireless headset charging system include：Wireless headset and the earphone charging unit to charge to wireless headset；Wherein, wireless headset, voltage detecting circuit, switch triggering circuit and master controller including battery component, for detecting battery component electricity, master controller is configured as, when the voltage detection signal characterization electricity for receiving voltage detecting circuit output is less than charging preset threshold, output charging trigger signal, with the work of trigger switch trigger circuit, and exports switching drive signal；Earphone charging unit, including charge switch and power supply, charge switch are configured as, the unlatching when receiving switching drive signal, by power supply voltage output to battery component.When the present invention solves wireless headset and connects with earphone charging unit, even if sufficient when the electricity of wireless headset, earphone charging unit can also give wireless headset charging automatically, cause wireless headset to overcharge and damaged problem.
Description
Technical field
The present invention relates to ear phone technology field, in particular to a kind of wireless headset charging system and wireless headset charging side
Method.
Background technique
With the fast development of ear phone technology, wireless headset, especially bluetooth headset using more and more extensive, wireless ear
Machine also obtains more and more frequently using on various occasions, and the single use time is also increasingly longer, therefore wireless headset charging
Frequency also increases.
Currently, most of wireless headset and earphone charging unit exist when being charged using charging unit to wireless headset
After connection, even if abundance when the electricity of wireless headset, earphone charging unit also can give wireless headset to charge automatically, in this way may
Lead to that wireless headset overcharges and is compromised.
Summary of the invention
The main object of the present invention is to propose a kind of wireless headset charging system and wireless headset charging method, it is intended to be solved
Earphone charging unit can also give wireless headset charging automatically, cause wireless headset to overcharge and damaged problem.
To achieve the above object, the present invention proposes a kind of wireless headset charging system, the wireless headset charging system packet
It includes：
Wireless headset and the earphone charging unit to charge to the wireless headset；Wherein,
The wireless headset, voltage detecting circuit, switch including battery component, for detecting the battery component electricity
Trigger circuit and master controller, the master controller are configured as, in the voltage for receiving the voltage detecting circuit output
When detecting electricity described in characterization less than charging preset threshold, output charging trigger signal, to trigger the switch triggering electricity
Road work, and export switching drive signal；
The earphone charging unit, including charge switch and power supply, the charge switch are configured as, and are being received
It is opened when the switching drive signal, by the power supply voltage output to the battery component.
Optionally, the master controller is additionally configured to, in the detection signal for receiving the voltage detecting circuit output
When characterizing the electricity less than shutdown preset threshold, machine control signal is closed in output；Wherein,
The charging preset threshold is greater than the shutdown preset threshold.
Optionally, the switch triggering circuit is LDO voltage stabilizer, the power input of the LDO voltage stabilizer and the electricity
The connection of pond component, the positive terminal of the power output end of the LDO voltage stabilizer and the battery component respectively with the charge switch
Output end connection, the LDO voltage stabilizer also connect with the power end of the charge switch, the enable end of the LDO voltage stabilizer
It is connect with the master controller.
Optionally, the earphone charging unit further includes charge controller, the power output end of the charge controller with
The power end of the charge switch connects, and the control terminal of the charge controller is connect with the controlled end of the charge switch；Institute
Charge controller is stated to be configured as, when the charging current when detecting wireless headset charging reaches predetermined current threshold,
The charge switch is controlled to close.
Optionally, the charge switch is analog switch, and the power end of the analog switch is the electricity of the charge switch
Source, the input terminal of the analog switch are connect with the power supply, and the controlled end of the analog switch is that the charging is opened
The controlled end of pass.
Optionally, the earphone charging unit further includes first diode, and the anode of the first diode is filled with described
The connection of the output end of the output end of electric trigger circuit and the analog switch, the cathode of the first diode are opened with the simulation
The power end of pass connects.
Optionally, the earphone charging unit further includes power sense circuit, the power sense circuit be arranged in series in
Between the charge controller and the power supply, the power sense circuit is configured as, and is detected the wireless headset and is filled
Charging current when electric, and current detection signal is exported to the charge controller.
Optionally, the battery component includes battery and power conversion chip, the input terminal of the power conversion chip with
The output end of the charge switch connects, and the output end of the power conversion chip is connect with described point out.
Optionally, earphone charging unit further includes the shell for accommodating the charge switch and power supply, the shell
Charge mode selection switch is provided on body, charge mode selection switch is configured as, the operation based on user and trigger,
And export the switching drive signal.
The present invention also proposes a kind of wireless headset charging method, in the wireless headset charging system, the wireless ear
Machine charging system includes wireless headset and the earphone charging unit to the wireless headset, which is characterized in that the wireless headset
Charging method includes the following steps：
Wireless headset obtains the battery capacity of its own, when battery capacity is less than charging preset threshold, to the earphone
Charging unit sends charge request signal；
The earphone charging unit is receiving the charge request signal, and the supply voltage of its own is exported to described
Wireless headset.
The present invention is by wireless headset charging system by the way that battery component is arranged in wireless headset, for detecting the electricity
Voltage detecting circuit, switch triggering circuit and the master controller of pond component electricity, and the voltage is received in master controller
When electricity described in the detection characterization of detection circuit output is less than charging preset threshold, output charging trigger signal, with triggering
The switch triggering circuit work, and export switching drive signal.And charge switch is set in earphone charging unit, and
Unlatching when charge switch receives the switching drive signal of switch triggering circuit output, by power supply voltage output to described
Battery component, to charge for battery component.When the present invention solves wireless headset and connects with earphone charging unit, even if wirelessly
The abundance when electricity of earphone, earphone charging unit also can give wireless headset to charge, wireless headset caused to overcharge and damaged automatically
Harmful problem.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the functional block diagram that wireless headset Charging of the present invention unifies embodiment；
Fig. 2 is the electrical block diagram of an embodiment of wireless headset in Fig. 1；
Fig. 3 is the electrical block diagram of an embodiment of earphone charging unit in Fig. 1；
Fig. 4 is the flow diagram of one embodiment of wireless headset charging method of the present invention.
Drawing reference numeral explanation：
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that if relating to directionality instruction (such as up, down, left, right, before and after ...) in the embodiment of the present invention,
Then directionality instruction be only used for explain under a certain particular pose (as shown in the picture) between each component relative positional relationship,
Motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, being somebody's turn to do " first ", " second " etc. if relating to the description of " first ", " second " etc. in the embodiment of the present invention
Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill
The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.It in addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution
Conjunction is not present, also not the present invention claims protection scope within.
The present invention proposes a kind of wireless headset charging system.
With the fast development of ear phone technology, wireless headset, especially bluetooth headset using more and more extensive, wireless ear
Machine also obtains more and more frequently using on various occasions, and it is also increasingly longer that the time is intended for single use.And in actual use process
In, wireless headset and intelligent electronic device, such as mobile phone, smartwatch etc. are often established communication link by people, utilize nothing
Line earphone plays voice, such as call or broadcasting music lamp, and acquires the voice of user, by configuring in wireless headset
Wireless communication module is exported to intelligent electronic device.Wireless headset is mostly internal self-powered, such as battery, but it is included
The general capacity of power supply is limited, therefore it is usually necessary to use earphone charging units to give wireless headset charging.Earphone charging unit is most
It is set as charging box shaped, wireless headset can also be accommodated into charging box when unused, in order to avoid lose.
When most of wireless headset is connected with earphone charging unit, even if abundance, earphone when the electricity of wireless headset
Charging unit can also give wireless headset charging automatically, may cause wireless headset in this way and overcharge and be compromised, while may also be because
To charge repeatedly to wireless headset, and lead to the battery component service life reduction in wireless headset.
To solve the above-mentioned problems, referring to figs. 1 to Fig. 3, in an embodiment of the present invention, 100 Charging of wireless headset
System includes：
Wireless headset 100 and the earphone charging unit 200 to charge to the wireless headset 100；Wherein,
The wireless headset 100, including battery component 110, the voltage detecting for detecting 110 electricity of battery component
Circuit 120, switch triggering circuit 130 and master controller 140, the master controller 140 are configured as, and are receiving the electricity
When the voltage detection signal for pressing detection circuit 120 to export characterizes the electricity less than charging preset threshold, output charging triggering is believed
Number, it is worked with triggering the switch triggering circuit 130, and export switching drive signal；
The earphone charging unit 200, including charge switch 210 and power supply 220, the charge switch 210 are matched
It is set to, the unlatching when receiving the switching drive signal, by 220 voltage output of power supply to the battery component
110。
In the present embodiment, which can be the wireless ear such as bluetooth headset bluetooth headset or Infrared earphone
Machine 100.Battery component 110 in wireless headset 100 is used to power to the power load 100 in earphone, which can be with
It is loudspeaker, microphone, indicator light, micromotor etc..Battery component 110 includes the battery 111 for storing electric energy, and will
The power supply 220 that earphone charging unit 200 exports is converted to the power conversion chip 112 that above-mentioned battery 111 stores electric energy.Electricity
The range of the storage electric energy in pond 111 can be set to 3.5~4.3V, specifically can be using dry cell 111, storage lithium ion battery
The rechargeable batteries 111 such as 111 or nickel-metal hydride battery 111 are realized.Control of the power conversion chip 112 based on master controller 140, generally
With dormant state namely standby mode, normal operating conditions and closed state.
Voltage detecting circuit 120 is used to detect the electricity of battery component 110, and voltage detection signal is exported to main control
Device 140.Voltage detecting circuit 120 can specifically be realized pair using the discrete element group such as resistance, capacitor at series connection bleeder circuit
The electric power detection of battery component 110 can also realize electric power detection using the integrated IC such as voltage checking chip, not limit herein
System.
Master controller 140 can control chip using private radio earphone 100 in wireless headset 100 and realize, can also
To be realized using independent microprocessor, herein with no restrictions.It is provided on the chip of master controller 140 and receives battery 111
The feedback foot of voltage detection signal, master controller 140 can determine the current electricity of battery 111 according to voltage detection signal,
Over-voltage, under-voltage protection can be carried out to battery 111 according to this signal.Master controller 140 can be single-chip microcontroller, DSP and FPGA
Equal microprocessors, those skilled in the art can be by integrating some hardware circuits and software program in master controller 140
Or algorithm, to realize that the voltage threshold to battery 111 is set, such as it is integrated with memory, ADC conversion circuit, and filter
The hardware circuits such as wave device, or for analyzing the software algorithm program for comparing the voltage detection signal received.By operation or
The software program and/or module being stored in 140 memory of master controller are executed, and calls the data being stored in memory,
And it is integrated in master controller 140 ADC conversion circuit and the voltage detection signal of the simulation is converted into digital signal, and pass through
The software algorithm program and/or hardware circuit module being integrated in master controller 140 examine the voltage for being converted to digital signal
It surveys signal and is compared, analyze etc. and handle, to determine the charge value of present battery component 110.And determining battery component 110
When charge value is less than charging voltage threshold value, output charging trigger signal.In the present embodiment, charging voltage threshold value can be according to battery
111 power reservoir capacity is set, such as when the range that battery 111 stores electric energy is 3.5~4.3V, charging voltage threshold value is then
It can be set to 3.2V, namely when detecting 111 electricity of battery lower than 3.2V, then characterization needs to charge to battery 111, this
When master controller 140 can export charging trigger signal, with when wireless headset 100 accesses to earphone charging unit 200, to nothing
Line earphone 100 charges.
In some embodiments, wireless headset 100 can also be arranged LED light, buzzer or export language by loudspeaker
Sound prompt, with the prompt letter that when the charge value of battery component 110 is less than charge threshold, output characterization earphone charges
Number, it is that wireless headset 100 charges to remind user in time.
It is understood that wireless headset 100 and earphone charging unit 200 also have charging interface, pass through the charging
Mouthful, earphone charging unit 200 and wireless headset 100 realize electric energy transmission.
The input terminal of charging trigger circuit is connect with the battery component 110, and the output end for the trigger circuit that charges is charged
Interface is electrically connected with the charge switch 210 of earphone charging unit 200, and in the charging triggering for receiving the output of master controller 140
When signal, the electric energy of battery component 110 is converted to the operating voltage of charge switch 210 by charging trigger circuit, namely switch drives
Dynamic signal, and export to the power end of charge switch 210, to drive charge switch 210 to work, thus by the electric energy of charging unit
The charged output of switch 210 is to battery component 110, to charge for battery component 110.
Charge switch 210 can be realized using switching tubes such as triode, metal-oxide-semiconductor, IGBT, can also use analog switch
It is realized etc. integrated IC, the present embodiment is chosen as DM74LS73 type analog switch specifically to realize.Wherein, the power supply of analog switch
End is the power end of the charge switch 210, and the input terminal of the analog switch is connect with power supply 220, and the simulation is opened
The controlled end of pass is the controlled end of the charge switch 210.
Power supply 220 is used to provide other circuit modules in charging voltage and charging unit for wireless headset 100
Operating voltage is provided, power supply 220 can realize that the voltage value of power supply 220 can be 12V using DC power supply,
24V can specifically be set, herein with no restrictions according to the type of earphone charging unit 200.
The present invention is by 100 charging system of wireless headset by the way that battery component 110 is arranged in wireless headset 100, is used for
Detect voltage detecting circuit 120, switch triggering circuit 130 and the master controller 140 of 110 electricity of battery component, and
Master controller 140 receives electricity described in the detection characterization that the voltage detecting circuit 120 exports and is less than the default threshold that charges
When value, output charging trigger signal is worked, and export switching drive signal with triggering the switch triggering circuit 130.And
Charge switch 210 is set in earphone charging unit 200, and receives opening for the output of switch triggering circuit 130 in charge switch 210
It is opened when closing driving signal, by 220 voltage output of power supply to the battery component 110, to be filled for battery component 110
Electricity.When the present invention solves wireless headset 100 and the connection of earphone charging unit 200, even if sufficient when the electricity of wireless headset 100
, earphone charging unit 200 can also charge to wireless headset 100 automatically, cause wireless headset 100 to overcharge and damaged ask
Topic.
Referring to figs. 1 to Fig. 3, in above-described embodiment, the master controller 140 is additionally configured to, and is receiving the voltage
When electricity described in the detection characterization that detection circuit 120 exports is less than shutdown preset threshold, machine control signal is closed in output；Its
In,
The charging preset threshold is greater than the shutdown preset threshold.
It should be noted that during 100 use of wireless headset, in fact it could happen that earphone charging unit 200 not with
At one's side, and there is the case where wireless headset 100 cannot charge in time in family, and if so that wireless headset 100 is worked at this time, have
Probably due to battery 111 completely consumes and causes some circuit elements inside wireless headset 100 that can not normally start and influence
The performance of wireless headset 100.In addition, earphone battery 111 consume completely after, it is also possible to prevent switch triggering circuit 130 from
It works normally, and switching drive signal can not be exported, cause charge switch 210 normally-open, even if in wireless headset 100
It is put into charging unit, at this time also because charge switch 210 is not opened, and cannot charge to wireless headset 100.
To solve the above-mentioned problems, in the present embodiment, shutdown preset threshold can be carried out according to the power reservoir capacity of battery 111
Setting, such as when the range that battery 111 stores electric energy is 3.5~4.3V, charging voltage threshold value is set as 3.2V, shuts down at this time
Preset threshold can be set to 3V.Master controller 140 can also control wireless according to the working characteristics of switch triggering circuit 130
Other circuit modules are shut down in earphone 100.Such as master controller 140 can receive voltage detection signal characterization battery 111
When electricity is less than shutdown preset threshold, machine control signal is closed in output, controls other circuit modules in wireless headset 100 and stops, this
When master controller 140 in a dormant state, the power consumption of its own is smaller, can maintain trigger switch trigger circuit 130 work.Such as
This setting, to reduce the power consumption of wireless headset 100 itself, while control switch trigger circuit 130 maintains output switch driving letter
Number, the charge switch in earphone charging unit 200 can be driven when wireless headset 100 accesses to earphone charging unit 200
210 open, and export 220 voltage value battery component 110 of power supply, are embodied as the charging of wireless headset 100.
Referring to figs. 1 to Fig. 3, in an alternative embodiment, the switch triggering circuit 130 is LDO voltage stabilizer, the LDO
The power input of voltage-stablizer is connect with the battery component 110, the power output end of the LDO voltage stabilizer and the battery pack
The positive terminal of part 110 is connect with the output end of the charge switch 210 respectively, the LDO voltage stabilizer also with the charge switch
210 power end connection, the enable end of the LDO voltage stabilizer is connect with the master controller 140.
In this city embodiment, control of the LDO voltage stabilizer based on master controller 140, and master control is received in master controller 140
The enable signal of device 140 processed, namely when charging trigger signal, the electric energy that battery component 110 exports is converted into charge switch 210
Driving voltage, with drive charge switch 210 work, wherein LDO voltage stabilizer specifically can with battery 111 store electric energy electric energy turn
1.8V supply voltage is changed to export to charge switch 210.
It is understood that master controller 140 is greater than charge threshold in the charge value for detecting battery component 110, namely
When 100 charging unit of wireless headset is that wireless headset 100 charges normal, enable signal is exported, to control LDO voltage stabilizer shutdown,
Charging interface stops output 1.8V.
It is connect it will also be appreciated that the input terminal of the output end of LDO voltage stabilizer and power conversion chip 112 is charged respectively
Mouth is connect with the output end of analog switch and power end, when receiving the enable signal of master controller 140, LDO voltage stabilizer
Output services voltage is opened with drive analog switch to the power end of analog switch, and in wireless headset 100 and earphone charging dress
When setting 200 reversal connection, such as the output end and the input terminal of power conversion chip 112 and the ground terminal of analog switch of LDO voltage stabilizer
When connection, analog switch is then not turned on, and also just cannot achieve the charging of wireless headset 100.It is filled so set, being advantageously implemented earphone
The confirmation of the polarity of electric installation 200 and wireless headset 100, and connect and if only if wireless headset 100 with earphone charging unit 200
When stablizing, earphone charging unit 200 just exports power supply 220 to battery component 110, the effective solution pole reversal or
The problem of impact is generated to wireless headset 100 in the case where poor contact, and damages wireless headset 100.
Referring to figs. 1 to Fig. 3, in an alternative embodiment, the earphone charging unit 200 further includes charge controller 230,
The power output end of the charge controller 230 is connect with the power end of the charge switch 210, the charge controller 230
Control terminal connect with the controlled end of the charge switch 210；The charge controller 230 is configured as, described detecting
When charging current when wireless headset 100 charges reaches predetermined current threshold, controls the charge switch 210 and close.
In the present embodiment, charge controller 230 can be realized using microprocessors such as single-chip microcontroller, DSP and FPGA, and
Those skilled in the art can be come by integrating some hardware circuits and software program or algorithm in charge controller 230
Realization reaches the control that predetermined current threshold is set to the charging current of battery 111.It specifically can refer to above-mentioned master controller
140 charging voltage threshold value set-up mode is configured, and details are not described herein again.
It is understood that, as the charging time increases, charging current is anti-when wireless headset 100 is using constant-voltage charge
And can be smaller, therefore the predetermined current threshold of charging current can be arranged in charge controller 230 according to this characteristic, and is filling
When electric current is less than the threshold value, it is determined that the electricity of wireless headset 100 has been saturated or close to saturation, can then export at this time
Switching drive signal, control charge switch 210 are closed, and stop charging to wireless headset 100, to solve wireless headset 100 repeatedly
The problem of charging, and leading to 110 service life reduction of battery component in wireless headset 100.
It will also be appreciated that during earphone charging unit 200 charges to wireless headset 100, power supply 220
Electric current be variation, charge controller 230 can also detect whether that wireless headset 100 connects according to the current signal of variation
Enter, and detecting that charge switch 210 opens, and exports 220 voltage of power supply, and when being that wireless headset 100 charges, charging
Controller 230 power output end output switching drive signal namely 1.8V supply voltage to analog switch power end, with
Analog switch is maintained to work normally.
Referring to figs. 1 to Fig. 3, in an alternative embodiment, the earphone charging unit 200 further includes first diode D1,
The anode of the first diode D1 is connect with the output end of the output end of the charging trigger circuit and the analog switch, institute
The cathode for stating first diode D1 is connect with the power end of the analog switch.In the present embodiment, first diode D1 is for keeping away
The supply voltage for exempting from the output of charge controller 230 flows backward to LDO voltage stabilizer, and damages LDO voltage stabilizer.
Referring to figs. 1 to Fig. 3, in an alternative embodiment, the earphone charging unit 200 further includes power sense circuit
240, the power sense circuit 240 is arranged in series between the charge controller 230 and the power supply 220, described
Power sense circuit 240 is configured as, and detects the charging current when wireless headset 100 charging, and by current detection signal
It exports to the charge controller 230.
In the present embodiment, power sense circuit 240 can be using discrete element groups such as resistance, capacitors at current detection circuit
It realizes the output electric current measure to power supply 220, can also realize that electric current is examined using the integrated IC such as current detecting chip
It surveys, herein with no restrictions.Power sense circuit 240 will test current signal to charge controller 230, so that charge controller
230 work according to the current detection signal driving charge switch 210 received.
Referring to figs. 1 to Fig. 3, in an alternative embodiment, earphone charging unit 200 further includes opening for accommodating the charging
The shell (not shown go out) of 210 and power supply 220 is closed, it is (not shown that charge mode selection switch is provided on the shell
Out), charge mode selection switch is configured as, the operation based on user and trigger, and export the switching drive signal.
In the present embodiment, shell is for charge controller 230, power supply 220, charge switch 210 etc., the shape of shell
Can be circle, be also possible to it is rectangular, specific structure can according to the size of wireless headset 100, charge controller 230, charging
The volume size of switch 210 and power supply 220 etc. is configured, herein with no restrictions.The optional use of the material of shell
Light, insulation material is realized.Earphone ac slot can be set for the receiving of wireless headset 100, shape in setting in shell
It can be with the external shape fits of wireless headset 100 with size.
It is understood that charge mode selection switch can be realized using self-resetting switch, it can also be using machinery
Switch is to realize.The output end of charge mode selection switch is connect with charge controller 230, to touch under the operational order of user
Hair, and mode select signal, with when charge controller 230 receives mode select signal, driving charge switch 210 works.
Mode select signal can be based on the driving signal that switch triggering circuit 130 exports and control asking for the work of charge switch 210
Charge mode, or the charging signals based on user's input are asked, and voluntarily export charging mould certainly to what wireless headset 100 charged
Formula.For example, be not used for a long time in wireless headset 100, and when electricity being caused to exhaust, user be may be selected by from exporting charging mould
Formula, by output switching drive signal to charge controller 230, when so that charge controller 230 receiving the signal, driving is filled
Electric switch 210 open, at this time charge switch 210 be not necessarily to receive wireless headset 100 output switching drive signal, can be realized for
Wireless headset 100 charges.
The present invention also proposes a kind of wireless headset charging method, is applied in wireless headset charging system, wireless headset fills
Electric system includes wireless headset and the earphone charging unit to the wireless headset.
Referring to Fig. 4, in an embodiment of the present invention, which includes the following steps：
S10, wireless headset obtain the battery capacity of its own, when battery capacity is less than charging preset threshold, to described
Earphone charging unit sends charge request signal；
In the present embodiment, the range of battery storage electric energy is generally 3.5~4.3V, during battery use, battery
Voltage can decline, and charging voltage threshold value then can be set to 3.2V, namely when detecting battery capacity lower than 3.2V, then characterizing needs
It charges the battery, wireless headset can issue the charge request signal that wireless headset needs to charge.
S20, the earphone charging unit are receiving the charge request signal, by the supply voltage of its own export to
The wireless headset.
Earphone charging unit receive wireless headset output charge request signal when, by power supply voltage output without
Line earphone, so that the battery component for wireless headset charges.The present invention solves wireless headset and earphone charging unit connects
When connecing, even if abundance when the electricity of wireless headset, earphone charging unit also can give wireless headset to charge automatically, lead to wireless ear
Machine overcharges and damaged problem.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (10)
1. a kind of wireless headset charging system, which is characterized in that the wireless headset charging system includes：
Wireless headset and the earphone charging unit to charge to the wireless headset；Wherein,
The wireless headset, voltage detecting circuit, switch triggering including battery component, for detecting the battery component electricity
Circuit and master controller, the master controller are configured as, in the voltage detecting for receiving the voltage detecting circuit output
When electricity described in characterization is less than charging preset threshold, output charging trigger signal, to trigger the switch triggering circuit work
Make, and exports switching drive signal；
The earphone charging unit, including charge switch and power supply, the charge switch are configured as, described receiving
It is opened when switching drive signal, by the power supply voltage output to the battery component.
2. wireless headset charging system as described in claim 1, which is characterized in that the master controller is additionally configured to,
When receiving electricity described in the detection characterization of the voltage detecting circuit output less than shutdown preset threshold, output shutdown control
Signal processed；Wherein,
The charging preset threshold is greater than the shutdown preset threshold.
3. wireless headset charging system as described in claim 1, which is characterized in that the switch triggering circuit is LDO pressure stabilizing
Device, the power input of the LDO voltage stabilizer are connect with the battery component, the power output end of the LDO voltage stabilizer and institute
The positive terminal for stating battery component is connect with the output end of the charge switch respectively, and the LDO voltage stabilizer is also opened with the charging
The power end of pass connects, and the enable end of the LDO voltage stabilizer is connect with the master controller.
4. wireless headset charging system as described in claim 1, which is characterized in that the earphone charging unit further includes charging
Controller, the power output end of the charge controller are connect with the power end of the charge switch, the charge controller
Control terminal is connect with the controlled end of the charge switch；The charge controller is configured as, and is detecting the wireless headset
When charging current when charging reaches predetermined current threshold, controls the charge switch and close.
5. wireless headset charging system as claimed in claim 4, which is characterized in that the charge switch is analog switch, institute
The power end for stating analog switch is the power end of the charge switch, and the input terminal of the analog switch and the power supply connect
It connects, the controlled end of the analog switch is the controlled end of the charge switch.
6. wireless headset charging system as claimed in claim 5, which is characterized in that the earphone charging unit further includes first
The output end of diode, the output end and the analog switch of the anode of the first diode and the charging trigger circuit connects
It connects, the cathode of the first diode is connect with the power end of the analog switch.
7. wireless headset charging system as claimed in claim 6, which is characterized in that the earphone charging unit further includes power supply
Detection circuit, the power sense circuit are arranged in series between the charge controller and the power supply, the power supply
Detection circuit is configured as, and detects charging current when wireless headset charging, and current detection signal is exported to described
Charge controller.
8. wireless headset charging system as claimed in any one of claims 1 to 7, which is characterized in that the battery component packet
Battery and power conversion chip are included, the input terminal of the power conversion chip is connect with the output end of the charge switch, described
The output end of power conversion chip is connect with described point out.
9. wireless headset charging system as claimed in any one of claims 1 to 7, which is characterized in that earphone charging unit is also
Including the shell for accommodating the charge switch and power supply, charge mode selection switch, institute are provided on the shell
Charge mode selection switch is stated to be configured as, the operation based on user and trigger, and export the switching drive signal.
10. a kind of wireless headset charging method, applied in wireless headset charging system described in 1 to 9 any one, the nothing
Line earphone charging system includes wireless headset and the earphone charging unit to the wireless headset, which is characterized in that described wireless
Earphone charging method includes the following steps：
Wireless headset obtains the battery capacity of its own, when battery capacity is less than charging preset threshold, charges to the earphone
Device sends charge request signal；
The earphone charging unit is receiving the charge request signal, and the supply voltage of its own is exported to described wireless
Earphone.
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| CN110572738A (en) * | 2019-10-08 | 2019-12-13 | 上海爻火微电子有限公司 | wireless earphone charging circuit and wireless earphone box |
| DE112020005154B4 (en) | 2019-10-25 | 2024-05-29 | Apple Inc. | CLOSED LOOP CONTROL RESERVE MANAGEMENT FOR BATTERIES CHARGING |
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