WO2023134449A1 - Ensemble écouteur sans fil, circuit de protection de batterie, ensemble batterie, appareil électronique et ensemble électronique - Google Patents

Ensemble écouteur sans fil, circuit de protection de batterie, ensemble batterie, appareil électronique et ensemble électronique Download PDF

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Publication number
WO2023134449A1
WO2023134449A1 PCT/CN2022/142686 CN2022142686W WO2023134449A1 WO 2023134449 A1 WO2023134449 A1 WO 2023134449A1 CN 2022142686 W CN2022142686 W CN 2022142686W WO 2023134449 A1 WO2023134449 A1 WO 2023134449A1
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Prior art keywords
unit
electrically connected
switch unit
signal
terminal
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PCT/CN2022/142686
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English (en)
Chinese (zh)
Inventor
宋利军
孟红娟
宋朋亮
廖伟宝
杨健
Original Assignee
西安稳先半导体科技有限责任公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority claimed from CN202210045139.2A external-priority patent/CN114401468A/zh
Priority claimed from CN202210524105.1A external-priority patent/CN114825543A/zh
Priority claimed from CN202210524103.2A external-priority patent/CN114784913A/zh
Priority claimed from CN202210524141.8A external-priority patent/CN114845201A/zh
Application filed by 西安稳先半导体科技有限责任公司 filed Critical 西安稳先半导体科技有限责任公司
Publication of WO2023134449A1 publication Critical patent/WO2023134449A1/fr

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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

Definitions

  • the present application relates to the technical field of batteries, in particular to a wireless earphone assembly, a battery protection circuit, a battery assembly, an electronic device and an electronic assembly.
  • the electronic device includes a battery 910, a battery protection circuit 920, a system circuit 930, a second switch unit 950 and a reset IC chip 940.
  • the user triggers a reset signal through the system circuit 930.
  • the reset IC chip 940 controls the second switch unit 950 to turn off, and the battery 910 stops supplying power to the system circuit 930.
  • the reset IC chip controls the second switch unit 950 to turn on to restore the power supply to the system circuit 930, and the electronic device restarts.
  • the existing electronic device needs to install a separate reset IC chip 940 and the second switch unit 950 , and the cost of the reset IC chip 940 itself is high, resulting in high cost of the electronic device itself.
  • the technical problem to be solved by the embodiments of the present application is to provide a wireless earphone assembly.
  • the wireless headset can be reset and restarted, and the cost is low.
  • the first aspect of the embodiment of the present application provides a wireless earphone assembly, including a wireless earphone and a charging compartment, and the wireless earphone can be accommodated in the charging compartment;
  • the wireless earphone includes a first battery, a first battery protection circuit, a system circuit, a first switch unit and a plurality of first contacts
  • the first battery protection circuit includes a first power supply terminal, a first power ground end, the first over-discharge voltage protection unit, the first discharge over-current protection unit, the first reference voltage generating unit, and the first logic control unit, and the first power supply end and the first power ground end correspond to the first
  • the positive and negative electrodes of the battery are electrically connected
  • the first logic control unit is electrically connected to the first switch unit for controlling the opening or closing of the first switch unit
  • the first switch unit is used for controlling the first battery to supply power to A system circuit
  • the first battery protection circuit is also electrically connected to the first contact;
  • the charging compartment includes a plurality of second contacts, the second contacts are electrically connected to the first contacts, and the charging compartment outputs a reset signal, and the reset signal passes through the second contacts, the first The contact outputs to the first battery protection circuit, the first logic control unit controls the first switch unit to turn off so that the first battery stops supplying power to the system circuit, and the first switch unit turns off the first preset After a set period of time, the first logic control unit controls the first switch unit to turn on to restore the power supply from the first battery to the system circuit.
  • two of the plurality of first contacts are the first power supply contact and the first ground contact
  • two of the plurality of the second contacts are the second power supply contact and the second ground contact
  • the first battery protection circuit includes a reset terminal, the reset terminal is electrically connected to the first power supply contact and the first logic control unit, the reset terminal receives the reset signal, and the first logic
  • the control unit controls the first switch unit to turn off so that the first battery stops supplying power to the system circuit, and after the first switch unit is turned off for a first preset time period, the first logic control unit controls the first switch unit to turn on to recover The first battery supplies power to the system circuitry.
  • the number of the first contacts is at least three, one of the plurality of first contacts is a first communication contact, and the number of the second contacts is the same as that of the first contacts.
  • the number corresponds, one of the plurality of second contacts is a second communication contact, and when the wireless earphone is stored in the charging compartment, the first communication contact is electrically connected to the second communication contact;
  • the first battery protection circuit includes a reset terminal, the reset terminal is electrically connected to the first communication contact and the first logic control unit, the reset terminal receives the reset signal, and the first logic
  • the control unit controls the first switch unit to turn off so that the first battery stops supplying power to the system circuit, and after the first switch unit is turned off for a first preset time period, the first logic control unit controls the first switch unit to turn on to recover The first battery supplies power to the system circuitry.
  • the first contact through which the wireless earphone transmits the reset signal is also used to transmit a communication signal to the system circuit; wherein the communication signal includes a first pulse signal, and the reset signal includes a second pulse signal; wherein, the time width of the high level of the first pulse signal is different from the time width of the high level of the second pulse signal, or the time width of the low level of the first pulse signal is different from that of the The time width of the low level of the second pulse signal is different; or, the time width of the high level of the first pulse signal is different from the time width of the high level of the second pulse signal and the first pulse The time width of the low level of the signal is different from the time width of the low level of the second pulse signal.
  • the reset signal includes a plurality of identical pulse signals
  • the first battery protection circuit determines whether it is a reset signal according to the time width of the received pulse signal high level or/and low level, and the number of pulse signals .
  • the charging bin when the charging bin sends the first communication signal to the system circuit and does not receive a feedback signal within a second preset time period, the charging bin generates and outputs a reset signal.
  • the charging compartment sends a reset verification signal to the system circuit within a third preset time period after outputting the reset signal to verify whether the wireless earphone is reset, wherein the third preset The time period is greater than the first preset time period.
  • the first logic control unit includes a CTL signal sampling unit, a first pulse width timing unit, a first pulse counting unit, a clock generation unit, a sampling timing unit, and a restart control unit, wherein the CTL signal sampling unit It is electrically connected to the reset terminal, and the CTL signal sampling unit is also electrically connected to the first pulse width timing unit, the clock generation unit, and the restart control unit, and the first pulse width timing unit is electrically connected to the first pulse counting unit , the clock generation unit is electrically connected to the sampling timing unit and the restart control unit respectively, the sampling timing unit is electrically connected to the first pulse counting unit, the pulse counting unit is electrically connected to the restart control unit, and the restart control unit is electrically connected to the restart control unit The control end of the first switch unit is electrically connected, and the restart control unit controls the first switch unit to be turned on or off according to an input signal.
  • the charging compartment also outputs a shipping entry signal, and the shipping entry signal is output to the first battery protection circuit through the second contact and the first contact, and the first battery protection circuit enters the ship In the shipping mode, the first switch unit is turned off so that the first battery stops supplying power to the system circuit.
  • the wireless earphone receives the shipping entry signal and the reset signal through the same first contact; or,
  • the charging compartment includes a compartment body and a hatch cover, the compartment cover is covered on the compartment body to form an accommodating cavity, the wireless earphone is contained in the accommodating cavity, after the first battery protection circuit enters the shipping mode and When the hatch cover of the charging compartment is opened, the charging compartment charges the wireless earphone so that the wireless earphone exits the shipping mode; or,
  • the first battery protection circuit In the shipping mode, the first battery protection circuit is in a zero power consumption mode.
  • the charging compartment detects whether the potential of the second terminal of the first switch unit has changed within a fourth preset time period after the shipping entry signal is sent; or,
  • the first battery protection circuit delays entering the shipping mode for an eighth preset time period after receiving the shipping entry signal, and the first battery protection circuit sends a shipping feedback signal to the charging compartment during the eighth preset time period; or ,
  • the first battery protection circuit When the first battery protection circuit recognizes the shipping incoming signal, the first battery protection circuit delays an eighth preset time period, and the first battery protection circuit outputs a shipping feedback signal to the eighth preset time period.
  • the system circuit shuts down the system circuit, and the first battery protection circuit enters a shipping mode after an eighth preset time period.
  • the first battery protection circuit and the first switch unit are located on the same chip; or, the first battery protection circuit is located on the first chip, and the first switch unit is located on the first chip outside.
  • the first end of the first switch unit is electrically connected to the negative electrode of the first battery, and the second end of the first switch unit is respectively connected to the second end of the system circuit, one of the The first contact is electrically connected, and the first battery protection circuit further includes a system end, the system end is electrically connected to the second end of the first switch unit, and the positive pole of the first battery is connected to the second end of the system circuit. one end and the other first contact are electrically connected; or,
  • the first battery protection circuit includes a system terminal, the first terminal of the first switch unit is electrically connected to the first power supply ground terminal, and the second terminal of the first switch unit is electrically connected to the system terminal, The system end is also electrically connected to the second end of the system circuit and one of the first contacts, and the positive pole of the first battery is connected to the first end of the system circuit and the other first contact. point electrical connections; or,
  • the first end of the first switch unit is electrically connected to the positive pole of the first battery, and the second end of the first switch unit is electrically connected to the first end of the system circuit and one of the first contacts.
  • the first battery protection circuit also includes a system terminal, the system terminal is electrically connected to the second terminal of the first switch unit, the negative pole of the first battery is connected to the second terminal of the system circuit, the other the first contact is electrically connected; or,
  • the first battery protection circuit includes a system terminal, the first terminal of the first switch unit is electrically connected to the first power supply terminal, the second terminal of the first switch unit is electrically connected to the system terminal, The system end is also electrically connected to the first end of the system circuit and one of the first contacts, and the negative pole of the first battery is connected to the second end of the system circuit and the other first contact. Click on the electrical connection.
  • the second contact includes a pogo pin
  • the first contact includes a conductive contact piece, a conductive pin, a conductive column, a conductive tongue or a gold finger.
  • the reset signal is sent to the wireless earphone through the charging compartment, and the first switch unit in the existing wireless earphone is used to realize the reset and restart function of the system circuit, without separately adding a reset IC chip and a second switch matched with the reset IC chip unit, thereby greatly reducing the cost and increasing the competitiveness of wireless earphone components.
  • the charging compartment can directly send a reset signal to the first battery protection circuit through the second contact and the first contact, without the intervention of the system circuit, which can overcome the The system circuit of the wireless headset is completely dead and cannot generate or output a reset signal defect, so as to realize the reset and restart of the system circuit, so that the system circuit of the wireless headset returns to normal.
  • the second aspect of the embodiment of the present application provides a wireless earphone assembly, including a wireless earphone and a charging compartment, and the wireless earphone can be put into the charging compartment; wherein, the wireless earphone includes a battery, a reset switch unit, and a system circuit and a plurality of first contacts, the battery supplies power to the system circuit via the reset switch unit; the charging compartment includes a plurality of second contacts, when the wireless earphone is placed in the charging compartment, the second The contact is in contact with the first contact to realize the electrical connection between the two;
  • the charging compartment when the wireless earphone is put into the charging compartment, the charging compartment outputs a reset signal to the wireless earphone, and after the wireless earphone receives the reset signal, the wireless earphone controls the reset switch unit to turn off, and the reset switch After the unit is turned off for a first preset period of time, the wireless earphone controls the reset switch unit to be turned on to realize the reset and restart of the system circuit.
  • the charging compartment includes a detection unit for detecting whether the wireless earphone is placed in the charging compartment, and when the detection unit detects that the wireless earphone is placed in the charging compartment At this time, the charging compartment outputs a reset signal to the wireless earphone.
  • the insertion detection unit is electrically connected to at least one of the second contacts, so as to determine whether the wireless earphone is placed in the charging compartment according to the electrical signal on the second contact; or,
  • the insertion detection unit includes a movable body and a detection subunit, the movable body can elastically move up and down, when the wireless earphone is put into the charging compartment, the wireless earphone presses down the movable body so that the movable body Moving down, when the detection subunit detects that the movable body moves downward by a threshold displacement, the detection subunit judges that the wireless earphone is put into the charging compartment; or
  • the putting-in detection unit includes a weight sensor or an infrared sensor.
  • the weight sensor detects a weight change or when the infrared sensor receives an infrared signal, the putting-in detection unit judges the the wireless earphone into the charging compartment; or,
  • the charging bin includes a bin body and a hatch cover, and the hatch cover is covered on the bin body to form an accommodating chamber, the wireless earphone can be accommodated in the accommodating chamber, and the insertion detection unit includes a lid closing detection unit, When the hatch is closed, the cover detection unit judges that the wireless earphone is put into the charging compartment; or,
  • the charging bin includes a bin body and a hatch cover, and the hatch cover is covered on the bin body to form an accommodating chamber, the wireless earphone can be accommodated in the accommodating chamber, and the insertion detection unit includes a cover opening detection unit, When the hatch is opened, the cover opening detection unit judges that the wireless earphone is put into the charging compartment.
  • the wireless headset further includes a battery protection circuit
  • the battery protection circuit includes a battery protection module and a first switch unit
  • the reset switch unit is the first switch unit
  • the battery protection module includes a power supply terminal, power supply ground terminal, over-discharge voltage protection unit, discharge overcurrent protection unit, logic control unit, and system terminal, wherein, the power supply terminal and power supply ground terminal are used to be electrically connected to the positive and negative poles of the battery, and the The logic control unit is electrically connected to the control end of the first switch unit, the first end of the first switch unit is used to be electrically connected to the battery, and the second end of the first switch unit is electrically connected to the system end;
  • the battery protection module is also electrically connected to the first contact; the reset signal is output to the battery protection module through the second contact and the first contact, and the logic control unit controls the first switch unit Turn off to stop the battery from supplying power to the system circuit, and after the first switch unit is turned off for a first preset time period, the logic control unit controls the first switch unit to turn on to restore the battery to supply power to the system circuit.
  • the battery protection module further includes a first discharge branch, the first terminal of the first discharge branch is electrically connected to the power supply terminal or the power ground terminal, and the second terminal of the first discharge branch Electrically connected to the system end, the first discharge branch includes a first discharge switch unit, the control terminal of the first discharge switch unit is electrically connected to the logic control unit, when the first discharge switch unit is turned on The resistance value range of the first discharge branch is 100 ⁇ -20k ⁇ , and when the battery protection circuit receives a reset signal, the logic control unit controls the first switch unit to turn off and controls the first discharge switch unit to conduct On, the logic control unit controls the first switch unit to turn on and controls the first discharge switch unit to turn off after the first preset time period after the first switch unit is turned off, and the first preset time period is less than or equal to 1 second .
  • the logic control unit includes a reset detection control unit and a discharge overcurrent control unit, wherein the discharge overcurrent control unit is electrically connected to the discharge overcurrent protection unit, and the discharge overcurrent protection unit is connected to the discharge overcurrent protection unit.
  • the system terminal is electrically connected
  • the reset detection control unit is electrically connected to the enabling terminal of the discharge overcurrent control unit, and when the reset detection control unit receives a reset signal, the reset detection control unit outputs a second signal to It is used to control the first switch unit to turn off and control the first discharge switch unit to turn on, and the reset detection control unit also outputs an enable signal to the discharge overcurrent control unit to stop the discharge overcurrent protection function; or,
  • the logic control unit includes a reset detection control unit and a discharge overcurrent control unit, wherein the discharge overcurrent control unit is electrically connected to the discharge overcurrent protection unit, and the discharge overcurrent protection unit is electrically connected to the system terminal connected, the reset detection control unit is electrically connected to the enabling terminal of the discharge overcurrent protection unit, and when the reset detection control unit receives a reset signal, the reset detection control unit outputs a second signal for controlling the first A switch unit is turned off and controls the first discharge switch unit to be turned on, and the reset detection control unit also outputs an enable signal to the discharge overcurrent protection unit to stop the discharge overcurrent protection function.
  • the reset detection control unit includes a timer, the timer starts counting when the reset detection control unit outputs a second signal, and the reset detection The control unit outputs a first signal to control the first switch unit to be turned on and the first discharge switch unit to be turned off, and the reset detection control unit outputs a de-enable signal to the enable terminal to restore the discharge overcurrent protection Function.
  • the system circuit includes a reset chip, the reset chip is electrically connected to the control terminal of the reset switch unit, and the reset chip is also electrically connected to the first contact, when the reset chip receives After the reset signal, the reset chip controls the reset switch unit to turn off, and after the reset switch unit is turned off for a first preset time period, the reset chip controls the reset switch unit to turn on to realize the reset and restart of the system circuit.
  • the first contact includes a first communication contact, and the battery protection module and the system circuit are both electrically connected to the first communication contact;
  • the second contact includes a second communication contact point, the second communication contact is electrically connected to the first communication contact;
  • the communication signal output by the charging compartment to the system circuit is a first pulse signal, and the output of the charging compartment to the
  • the communication signal of the battery protection module is a second pulse signal, and the voltage corresponding to the logic high level of the first pulse signal is smaller than the voltage corresponding to the logic high level of the second pulse signal.
  • the battery protection module includes a reset terminal, the reset terminal is used to receive the reset signal, and the reset terminal is electrically connected to the logic control unit and the first contact respectively; or,
  • the power supply source is used for receiving the reset signal.
  • the charging compartment when the wireless earphone is put into the charging compartment, the charging compartment outputs a reset signal to the wireless earphone, and after the wireless earphone receives the reset signal, the wireless earphone controls the reset switch unit to turn off, After the reset switch unit is turned off for a first preset time period, the wireless earphone controls the reset switch unit to be turned on so as to reset and restart the system circuit. Therefore, when the user puts the wireless headset into the charging compartment every time, the charging compartment will automatically trigger the output of a reset signal to the wireless headset to realize the reset and restart of the wireless headset.
  • the third aspect of the embodiment of the present application provides a battery protection circuit, including a battery protection module and a first switch unit, the battery protection module includes a power supply terminal, a power ground terminal, an over-discharge voltage protection unit, and a discharge over-current protection unit , a logic control unit, and a system terminal, wherein the power supply terminal and the power ground terminal are used to be electrically connected to the positive and negative poles of the battery, the logic control unit is electrically connected to the control terminal of the first switch unit, and the second The first end of a switch unit is used to electrically connect to the battery, and the second end of the first switch unit is electrically connected to the system end;
  • the battery protection module further includes a first discharge branch, the first end of the first discharge branch is electrically connected to the power supply terminal or the power ground terminal, and the second end of the first discharge branch is connected to the system Terminals are electrically connected,
  • the first discharge branch circuit includes a first discharge switch unit, the control terminal of the first discharge switch unit is electrically connected to the logic control unit, and when the first discharge switch unit is turned on, the The resistance value range of the first discharge branch is 100 ⁇ -20k ⁇ , and when the battery protection circuit receives a reset signal, the logic control unit controls the first switch unit to be turned off and controls the first discharge switch unit to be turned on, The first switch unit is turned off for a first preset time period, and the logic control unit controls the first switch unit to be turned on and the first discharge switch unit to be turned off, and the first preset time period is less than or equal to 1 second.
  • the logic control unit includes a reset detection control unit and a discharge overcurrent control unit, wherein the discharge overcurrent control unit is electrically connected to the discharge overcurrent protection unit, and the discharge overcurrent protection unit is connected to the discharge overcurrent protection unit.
  • the system terminal is electrically connected
  • the reset detection control unit is electrically connected to the enabling terminal of the discharge overcurrent control unit, and when the reset detection control unit receives a reset signal, the reset detection control unit outputs a second signal to It is used to control the first switch unit to be turned off and the first discharge switch unit to be turned on, and the reset detection control unit also outputs an enable signal to the discharge overcurrent control unit to stop its discharge overcurrent protection function.
  • the logic control unit includes a reset detection control unit and a discharge overcurrent control unit, wherein the discharge overcurrent control unit is electrically connected to the discharge overcurrent protection unit, and the reset detection control unit is connected to the discharge overcurrent control unit.
  • the enable end of the discharge overcurrent protection unit is electrically connected, and when the reset detection control unit receives a reset signal, the reset detection control unit outputs a second signal for controlling the first switch unit to turn off and controlling the first discharge switch
  • the unit is turned on, and the reset detection control unit also outputs an enable signal to the discharge overcurrent protection unit to stop its discharge overcurrent protection function.
  • the reset detection control unit includes a timer, the timer starts counting when the reset detection control unit outputs a second signal, and the reset detection The control unit outputs a first signal to control the first switch unit to be turned on and the first discharge switch unit to be turned off, and the reset detection control unit outputs a de-enable signal to the enable terminal to restore its discharge overcurrent Protective function.
  • the time when the reset detection control unit outputs the disabling signal is after the time when the reset detection control unit outputs the first signal.
  • the first discharge branch circuit includes a first discharge resistor, the first discharge resistor is connected in series with the first discharge switch unit, and the resistance value of the first discharge resistor ranges from 100 ohms to 20 k ⁇ Europe.
  • the resistance of the first discharge branch is in the range of 1 k ⁇ -10 k ⁇ , and the first preset time period is less than or equal to 500 ms.
  • the battery protection module further includes a second discharge branch, the first end of the second discharge branch is electrically connected to the power supply end or the power ground end, and the second end of the second discharge branch Electrically connected to the system end, the second discharge branch includes a second discharge switch unit and a second discharge resistor, the second discharge switch unit is connected in series with the second discharge resistor, and the control of the second discharge switch unit terminal is electrically connected to the logic control unit, and when the battery protection circuit receives a reset signal, the logic control unit controls the first switch unit to turn off and controls the second discharge switch unit to turn on, and the first switch After the unit is turned off for a first preset time period, the logic control unit controls the first switch unit to be turned on and the second discharge switch unit to be turned off, and the resistance of the second discharge resistor is greater than or equal to 100 k ⁇ .
  • the battery protection module includes a reset terminal for receiving the reset signal, and the reset terminal is electrically connected to the logic control unit; or,
  • the power supply source is used for receiving the reset signal.
  • the battery protection module and the first switch unit are located on the same chip, the power supply terminal is a power supply pin, the power ground terminal is a power ground pin, and the system terminal is a system pin, the second end of the first switch unit is used for electrical connection with the system circuit via the system pin, and the second end of the first discharge branch is used for electrical connection with the system circuit via the system pin electrical circuit connections; or,
  • the battery protection module is located on the first chip, the first switch unit is located outside the first chip, the power supply terminal is a power supply pin, the power ground terminal is a power ground pin, and the system terminal is a system pin, the second end of the first discharge branch is used to be electrically connected to the system circuit via the system pin, and the second end of the first switch unit is used to be electrically connected to the system circuit,
  • the battery protection module further includes a switch control pin electrically connected to the control terminal of the first switch unit; or,
  • the first end of the first switch unit is electrically connected to the negative electrode of the battery, the second end of the first switch unit is electrically connected to the system end, and the system end is used to be electrically connected to the system circuit , when the first discharge switch unit is turned on, it takes less than 1 second for the voltage between the power supply terminal and the system terminal to discharge below the first threshold voltage, wherein the range of the first threshold voltage is less than or equal to 1V; or,
  • the first end of the first switch unit is electrically connected to the positive pole of the battery, the second end of the first switch unit is electrically connected to the system end, and the system end is used to electrically connect to the system circuit , when the first discharge switch unit is turned on, it takes less than 1 second for the voltage between the system terminal and the power supply ground to discharge below the first threshold voltage, wherein the range of the first threshold voltage is less than or equal to 1V.
  • the first switch unit includes a charge switch subunit and a discharge switch subunit, the charge switch subunit and the discharge switch subunit are connected in series, and the control terminal of the charge switch subunit is connected to the discharge switch
  • the control terminals of the subunits are respectively electrically connected to the logic control unit, and when the battery protection circuit receives a reset signal, the logic control unit controls the discharge switch subunit to keep off; or,
  • the first switch unit includes a switch tube and a substrate control circuit, the control terminal of the switch tube is electrically connected to the logic control unit, the substrate control circuit is electrically connected to the switch tube and the logic control unit, respectively,
  • the substrate control circuit is used to control different bias states of the substrate of the switch tube.
  • the logic control unit controls the switch tube to keep off, and through the The substrate control circuit controls the substrate bias of the switching tube to a discharge cut-off state.
  • the fourth aspect of the embodiment of the present application provides a battery assembly, including:
  • the above battery protection circuit wherein, the power supply end and the power ground end of the battery protection circuit are electrically connected to the positive and negative electrodes of the battery, and the battery is used to be electrically connected to the system circuit through the first switch unit.
  • the fifth aspect of the embodiment of the present application provides an electronic device, which includes a system circuit, and further includes the above-mentioned battery protection circuit or the above-mentioned battery assembly, and one end of the system circuit is electrically connected to the second end of the first switch unit. connected, and the other end of the system circuit is used for electrical connection with the battery.
  • the sixth aspect of the embodiment of the present application provides an electronic component, including a storage device and the above-mentioned electronic device, the electronic device can be put into the storage device, and the electronic device also includes a plurality of first contacts, so The storage device includes a plurality of second contacts, and when the electronic device is put into the storage device, the second contacts contact the first contacts to realize the electrical connection between the two.
  • the system circuit sends a reset signal to the battery protection circuit
  • the storage device When the storage device detects that the electronic device is put into the storage device, the storage device sends a reset signal to the battery protection circuit of the electronic device.
  • the first contact includes a first communication contact, and both the battery protection module and the system circuit are electrically connected to the first communication contact;
  • the second contact includes a second communication contact point, the second communication contact is electrically connected to the first communication contact;
  • the communication signal output by the storage device to the system circuit is a first pulse signal, and the communication signal output by the storage device to the
  • the communication signal of the battery protection module is a second pulse signal, and the voltage corresponding to the logic high level of the first pulse signal is smaller than the voltage corresponding to the logic high level of the second pulse signal.
  • the battery protection module includes a first discharge branch, the first end of the first discharge branch is electrically connected to the power supply end or the power ground end, and the second end of the first discharge branch is electrically connected to the system end ,
  • the first discharge branch includes a first discharge switch unit, the control terminal of the first discharge switch unit is electrically connected to the logic control unit, and the resistance range of the first discharge branch is when the first discharge switch unit is turned on 100 ⁇ -20K ⁇ , when the battery protection circuit receives the reset signal, the logic control unit controls the first switch unit to turn off and controls the first discharge switch unit to turn on, and the first switch unit turns off after the first preset time period
  • the logic control unit controls the first switch unit to be turned on and the first discharge switch unit to be turned off, and the first preset time period is less than or equal to 1 second.
  • the battery protection module when the battery protection module receives the reset signal, the voltage of the second capacitor of the system circuit can be quickly released below the first threshold voltage through the first discharge branch, so that the system circuit can be quickly reset and restarted, and the reset and restart time If it is less than or equal to 1 second, even if the user needs to use the electronic device soon, the electronic device can still be used normally, which improves the user experience.
  • the seventh aspect of the embodiment of the present application provides a wireless earphone assembly, including a wireless earphone and a charging compartment, and the wireless earphone can be accommodated in the charging compartment;
  • the wireless earphone includes a battery, a battery protection circuit, a system circuit and a plurality of first contacts
  • the battery protection circuit includes a battery protection module and a first switch unit
  • the battery protection module includes a power supply terminal, a power ground end, over-discharge voltage protection unit, discharge over-current protection unit, logic control unit, and system end, wherein the power supply end and power ground end are electrically connected to the positive and negative poles of the battery, and the logic control unit is connected to the first
  • the control end of the switch unit is electrically connected, the first end of the first switch unit is electrically connected to the battery, and the second end of the first switch unit is electrically connected to the system circuit;
  • the first contact includes a first a communication contact, the battery protection module and the system circuit are both electrically connected to the first communication contact;
  • the charging compartment includes a plurality of second contacts, the second contacts include second communication contacts, and the second communication contacts are electrically connected to the first communication contacts;
  • the communication signal output by the charging bin to the system circuit is a first pulse signal
  • the communication signal output by the charging bin to the battery protection module is a second pulse signal
  • the logic high of the first pulse signal is The voltage corresponding to the level is less than the voltage corresponding to the logic high level of the second pulse signal
  • the battery protection module recognizes that The first pulse signal is a continuous logic low level signal.
  • the number of the first contact and the second contact is two, the two first contacts are the first power supply contact and the first ground contact, and the two first contacts The two contacts are the second power supply contact and the second ground contact.
  • the second power supply contact is electrically connected to the first power supply contact.
  • the ground contact is electrically connected to the first ground contact, wherein the first power supply contact is the first communication contact, and the second power supply contact is the second communication contact; or,
  • the number of the first contacts is at least three, one of the plurality of first contacts is a first communication contact, the number of the second contacts corresponds to the number of the first contacts, and at most One of the second contacts is a second communication contact, and the first communication contact is electrically connected to the second communication contact when the wireless earphone is stored in the charging compartment.
  • the battery protection module includes a communication terminal, and the communication terminal is electrically connected to the first communication contact and the logic control unit, respectively.
  • the wireless earphone includes a first voltage dividing resistor
  • the logic control unit includes a second voltage dividing resistor and a signal sampling unit
  • one end of the first voltage dividing resistor is electrically connected to the first communication contact
  • the other end of the first voltage dividing resistor is electrically connected to the communication terminal
  • the communication terminal is also electrically connected to one end of the second voltage dividing resistor
  • the other end of the second voltage dividing resistor is connected to the power supply
  • the ground terminal or the system terminal is electrically connected
  • the signal sampling unit is electrically connected to the communication terminal
  • the signal sampling unit judges that the voltage of the communication terminal is greater than the third threshold voltage as a logic high level, and is less than the third threshold voltage as a logic low level level
  • the voltage corresponding to the logic high level of the first pulse signal is divided by the first voltage dividing resistor and the second voltage dividing resistor
  • the voltage of the communication terminal is less than the third threshold voltage
  • the second pulse signal After the voltage corresponding to the logic high level is divided
  • the logic control unit includes a first voltage-dividing resistor, a second voltage-dividing resistor and a signal sampling unit, one end of the first voltage-dividing resistor is electrically connected to the communication terminal, and one end of the first voltage-dividing resistor The other end is electrically connected to one end of the second voltage dividing resistor, the other end of the second voltage dividing resistor is electrically connected to the power supply ground terminal or the system end, and the signal sampling unit is connected to the first voltage dividing resistor It is electrically connected to the connection of the second voltage dividing resistor, and the signal sampling unit judges that the voltage at the connection is greater than the third threshold voltage, which is a logic high level, and is less than the third threshold voltage, which is a logic low level, and the After the voltage corresponding to the logic high level of the first pulse signal is divided by the first voltage dividing resistor and the second voltage dividing resistor, the voltage at the connection is less than the third threshold voltage, and the logic high level of the second pulse signal After the voltage corresponding to the level is divided by the
  • the voltage range corresponding to the logic high level of the first pulse signal is 2V-3.5V
  • the voltage range corresponding to the logic high level of the second pulse signal is 4V-6V.
  • the ratio range of the first voltage dividing resistor to the second voltage dividing resistor is 1:1-5:1; or,
  • the resistance values of the first voltage dividing resistor and the second voltage dividing resistor are both greater than or equal to 1M ⁇ .
  • the logic control unit includes a second voltage dividing resistor and a signal sampling unit, one end of the second voltage dividing resistor is electrically connected to the communication terminal, and the other end of the second voltage dividing resistor is connected to the power supply
  • the ground terminal or the system terminal is electrically connected
  • the signal sampling unit is electrically connected to the communication terminal
  • the signal sampling unit judges that the voltage of the communication terminal is greater than the third threshold voltage as a logic high level, and is less than the third threshold voltage as a logic high level. low level
  • the third threshold voltage is greater than the upper limit of the voltage corresponding to the logic high level of the first pulse signal, and smaller than the lower limit of the voltage corresponding to the logic high level of the second pulse signal.
  • the communication terminal is a reset terminal
  • the second pulse signal includes a reset signal
  • the logic control unit controls the first switch unit to turn off, and the first After the switch unit is turned off for a first preset period of time, the logic control unit controls the first switch unit to be turned on; or,
  • the communication terminal is a shipping terminal
  • the second pulse signal includes a shipping signal
  • the logic control unit controls the first switch unit to keep off, and the battery At least some units of the protection module do not consume power.
  • the second pulse signal includes a reset signal
  • the charging bin outputs a reset signal to the wireless earphone via the second communication contact and the first communication contact, so After the wireless earphone receives the reset signal, the wireless earphone controls the first switch unit to turn off, and after the first switch unit is turned off for a first preset time period, the wireless earphone controls the first switch unit to turn on to realize Reset and restart of the system circuit.
  • the second terminal of the first switch unit is electrically connected to the system terminal;
  • the battery protection module further includes a first discharge branch, and the first terminal of the first discharge branch is connected to the power supply terminal or the power supply terminal.
  • the ground end is electrically connected
  • the second end of the first discharge branch is electrically connected to the system end
  • the first discharge branch includes a first discharge switch unit, and the first discharge switch unit is connected to the first discharge resistor connected in series, the resistance range of the first discharge resistor is 100 ⁇ -20k ⁇
  • the control terminal of the first discharge switch unit is electrically connected to the logic control unit, when the battery protection circuit receives the reset signal
  • the logic control unit controls the first switch unit to turn off and controls the first discharge switch unit to turn on, and after the first switch unit is turned off for a first preset time period, the logic control unit controls the first switch unit to turn on and controls the first discharge switch unit to turn on.
  • a discharge switch unit is turned off, and the first preset time period is less than or equal to 1 second.
  • the communication signal output from the charging bin to the system circuit is set as the first pulse signal
  • the communication signal output from the charging bin to the battery protection module is the second pulse signal
  • the logic high level of the first pulse signal The corresponding voltage is less than the voltage corresponding to the logic high level of the second pulse signal.
  • FIG. 1 is a circuit module diagram of a conventional electronic device for realizing reset and restart;
  • Fig. 2a is a circuit block diagram of a wireless earphone assembly according to the first embodiment of the present application
  • Fig. 2b is a circuit block diagram of another wireless earphone assembly according to the first embodiment of the present application.
  • Fig. 2c is a circuit block diagram of another wireless earphone assembly according to the first embodiment of the present application.
  • Fig. 2d is a circuit block diagram of another wireless earphone assembly in the first embodiment of the present application.
  • Fig. 3 is a partial block diagram of a first logic control unit according to the first embodiment of the present application.
  • Fig. 4 is a timing diagram corresponding to Fig. 3;
  • Fig. 5 is a partial block diagram of a first logic control unit according to another embodiment of the present application.
  • Fig. 6 is a timing diagram corresponding to modules related to entering the shipping mode in Fig. 5;
  • FIG. 7 is a circuit block diagram of a wireless earphone assembly according to the second embodiment of the present application.
  • FIG. 8 is a circuit block diagram of an electronic device according to the third embodiment of the present application.
  • Fig. 9 is a kind of circuit block diagram of capacitance detection circuit in Fig. 8;
  • FIG. 10 is a circuit block diagram of an electronic component according to a fourth embodiment of the present application.
  • Fig. 11 is a circuit block diagram of the electronic assembly of the fifth embodiment of the present application.
  • Fig. 12 is a circuit block diagram of an electronic component according to another embodiment of the present application.
  • Fig. 13 is a specific circuit block diagram of the battery protection circuit in the fifth embodiment of the present application.
  • Fig. 14 is a specific circuit block diagram of a logic control unit, a first switch unit, a first discharge branch, and a second discharge branch in the fifth embodiment of the present application;
  • Fig. 15 is a circuit block diagram of the electronic component of the sixth embodiment of the present application.
  • Fig. 16 is a circuit block diagram of an electronic component according to another embodiment of the present application.
  • Fig. 17 is a specific circuit block diagram of the battery protection circuit in the sixth embodiment of the present application.
  • Fig. 18 is a specific circuit block diagram of the logic control unit, the first switch unit, the first discharge branch, and the second discharge branch in the sixth embodiment of the present application;
  • Fig. 19 is a specific circuit block diagram of the battery protection circuit of the seventh embodiment of the present application.
  • Fig. 20 is a circuit block diagram of an electronic component of the eighth embodiment of the present application.
  • Fig. 21 is a specific circuit module diagram of the battery protection circuit in the eighth embodiment of the present application.
  • Fig. 22 is a specific circuit block diagram of the battery protection circuit in another embodiment of the present application.
  • FIG. 23 is a specific circuit block diagram of the battery protection circuit in the ninth embodiment of the present application.
  • the XX terminal mentioned in this application may or may not be an actual terminal, for example, it is only one end of a component or one end of a wire.
  • the embodiment of the present application provides a wireless earphone assembly, including a wireless earphone 100 and a charging case 200, the wireless earphone 100 can be stored in the charging case 200, and can also be taken out of the charging case 200 for use.
  • the wireless headset 100 is, for example, a Bluetooth headset or the like.
  • the wireless earphone 100 includes a first battery 110, a first battery protection circuit 120, a first switch unit 130, a system circuit 140 and a plurality of first contacts.
  • the first battery 110, the first battery protection circuit 120, and the first switch unit 130 are used to control the power supply to the system circuit 140
  • the system circuit 140 is electrically connected to the first battery protection circuit 120
  • the first battery 110 provides protection for the first battery.
  • the circuit 120 supplies power
  • the first battery protection circuit 120 plays a protective role. For example, when the first battery 110 is overcharged or overdischarged, it is protected. Because how the first battery protection circuit 120 overcharges and overdischarges the first battery 110 Protection is a common technical means in this field, and will not be repeated here.
  • the system circuit 140 includes a micro control unit, a sound processing chip, a bluetooth chip and the like.
  • the plurality of first contacts are used to realize contact electrical connection with the charging bin 200, so that the charging bin 200 can charge the wireless earphone 100, communicate with the wireless earphone 100, and so on.
  • a second resistor R2 and a first capacitor C1 are further provided between the first battery protection circuit 120 and the first battery 110 , and the second resistor R2 and the first capacitor C1 are used for filtering.
  • the second resistor R2 and the first capacitor C1 may not be provided between the first battery 110 and the first battery protection circuit 120 , and of course other circuits or electronic components may also be provided.
  • the number of the first battery 110 is one or more. When there are multiple, the multiple first batteries 110 can be connected in parallel or in series or mixed in series and parallel.
  • the first battery 110 is preferably a lithium battery, Rechargeable batteries such as nickel-cadmium batteries and nickel-metal hydride batteries. In this embodiment, since the wireless earphone 100 itself is relatively small, the capacity of the first battery 110 is also relatively small.
  • the capacity of the first battery 110 is 10mAH-80mAH, such as 10mAH, 20mAH, 30mAH, 40mAH, 50mAH, 60mAH, 70mAH, 80mAH, the volume of the first battery 110 of this capacity is small, preferably, the capacity of the first battery 110 is 20mAH-40mAH, at this time the volume of the first battery 110 is smaller, and can be conveniently arranged in
  • the small wireless earphone 100 facilitates the miniaturization of the wireless earphone 100, especially the miniaturization of the Bluetooth earphone.
  • the first battery protection circuit 120 includes a first power supply terminal VDD1, a first power ground terminal GND1, a first reference voltage generation unit, a first over-discharge voltage protection unit, a first discharge over-current protection unit,
  • the first logic control unit, the first overcharge voltage protection unit, the first charge overcurrent protection unit, the system terminal VM, etc., the first power supply terminal VDD1, and the first power ground terminal GND1 correspond to the positive and negative poles of the first battery 110 are electrically connected, so that the first battery 110 can supply power to the first battery protection circuit 120 .
  • the system end VM is used to monitor the current flowing through the system circuit 140 , of course, the system end VM can also have other functions.
  • the first reference voltage generation unit provides reference voltages for the first over-discharge voltage protection unit, the first discharge over-current protection unit, etc., so as to determine whether the first battery 110 is in an over-discharge voltage state, a discharge over-current state, short circuit status etc.
  • the first over-discharge voltage protection unit is used to protect the first battery 110 when it detects that the voltage of the first battery 110 is lower than the reference voltage provided by the first reference voltage generating unit during the discharge process of the first battery 110, such as controlling
  • the first battery 110 only discharges to a minimum level, and generally stops supplying power to the system circuit 140 to prevent the first battery 110 from being over-discharged and causing permanent damage to the first battery 110 .
  • the first discharge overcurrent protection unit is used to protect the first battery 110 and the system circuit 140 when it detects that the discharge current is too large during the discharge process of the first battery 110, for example, the first battery 110 stops discharging, etc., to prevent Excessive discharge current may cause permanent damage to the first battery 110 and the system circuit 140 or cause safety problems.
  • the first logic control unit is used to control the working state and control logic of each unit of the first battery protection circuit 120, and to control whether the first battery 110 is discharged externally and whether to charge the first battery 110.
  • the first logic control unit can control The entire first battery protection circuit 120 is in a zero power consumption mode, that is, the entire first logic control unit consumes almost no power.
  • the first overcharge voltage protection unit is used by the user to protect the first battery 110 when it detects that the voltage of the first battery 110 is higher than the reference voltage provided by the reference voltage generating unit during the charging process of the first battery 110, preventing the first The battery 110 continues charging after being fully charged to prevent the first battery 110 from being damaged.
  • the first charging overcurrent detection unit is used to protect the first battery 110 when it detects that the charging current is too large during the charging process of the first battery 110, for example, the first battery 110 stops charging the first battery 110 to prevent Excessive charging current may cause permanent damage to the first battery 110 or cause safety problems.
  • connection modes between the first switch unit 130 and the first battery protection circuit 120 generally have the following types.
  • those skilled in the art can also make simple modifications to the circuit described below as required. within the scope of this application.
  • the first battery protection circuit 120 includes a switch control terminal CO/DO, the switch control terminal CO/DO is electrically connected to the first logic control unit, and the control terminal of the first switch unit 130 is connected to the switch control terminal CO /DO electrical connection, that is, the first switch unit 130 is located outside the first battery protection circuit 120 (the first switch unit 130 is external), and the first end of the first switch unit 130 is electrically connected to the negative pole of the first battery 110 ( The first switch unit 130 is placed below), the negative pole of the first battery 110 is grounded, and the second terminal of the first switch unit 130 is electrically connected to the system circuit 140 and the system terminal VM respectively.
  • the first logic control unit controls the first switch unit 130 to turn on or off through the switch control terminal CO/DO, so that when the first logic control unit controls the first switch unit 130 to turn on At this time, the first battery 110 can supply power to the system circuit 140 through the first switch unit 130, and the system circuit 140 is in the normal working mode.
  • the first battery 110 stops Power is supplied to the system circuit 140, and the system circuit 140 is in a zero power consumption mode (leakage current is not considered).
  • the first battery protection circuit 120 can be implemented on the first chip, that is, the first switch unit 130 is not on the first chip at this time.
  • the first battery protection circuit 120 may not be implemented on the first chip, and may be designed according to the needs of users.
  • the zero power consumption mode means that the power of the first battery 110 is not consumed in an ideal situation, and there will be a certain leakage current in the actual situation.
  • the zero power consumption mode does not mean that the power consumption is actually 0, but refers to the power consumption close to 0.
  • the first switch unit 130 is built in the first battery protection circuit 120 (the first switch unit 130 is built in, at this time the first switch unit 130 and the first battery protection circuit 120 are located on the same chip), At this time, the control terminal of the first switch unit 130 is electrically connected to the first logic control unit, the first terminal of the first switch unit 130 is electrically connected to the first power ground terminal GND1, and the first power ground terminal GND1 is connected to the first battery 110.
  • the negative pole of the first switch unit 130 is electrically connected (the first switch unit 130 is placed down), the second terminal of the first switch unit 130 is electrically connected to the system terminal VM of the first battery protection circuit 120 , and the system terminal VM is electrically connected to the system circuit 140 .
  • the first logic control unit controls the first switch unit 130 to turn on or turn off, so that when the first logic control unit controls the first switch unit 130 to turn on, the first battery 110 Power can be supplied to the system circuit 140 through the first switch unit 130, and the system circuit 140 is in a normal working mode.
  • the first battery 110 stops supplying power to the system circuit 140, and the system Circuit 140 is in 0 power consumption mode.
  • the first battery protection circuit 120 may be implemented on a chip, that is, at this time, the first switch unit 130 and the first battery protection circuit 120 are located on the same chip.
  • the first battery protection circuit 120 may not be implemented on the chip, and may be designed according to the needs of users.
  • the first battery protection circuit 120 includes a switch control terminal CO/DO, the switch control terminal CO/DO is electrically connected to the first logic control unit, the control terminal of the first switch unit 130 is connected to the switch control terminal CO/DO DO is electrically connected, that is, the first switch unit 130 is located outside the first battery protection circuit 120 (the first switch unit 130 is external), and the first end of the first switch unit 130 is electrically connected to the positive pole of the first battery 110 (the first switch unit 130 is electrically connected to the positive pole of the first battery 110 A switch unit 130 is placed above), and the second terminal of the first switch unit 130 is electrically connected to the system circuit 140 and the system terminal VM respectively.
  • the first logic control unit controls the first switch unit 130 to turn on or off through the switch control terminal CO/DO, so that when the first logic control unit controls the first switch unit 130 to turn on At this time, the first battery 110 can supply power to the system circuit 140 through the first switch unit 130, and the system circuit 140 is in the normal working mode.
  • the first battery 110 stops Power is supplied to the system circuit 140, and the system circuit 140 is in a zero power consumption mode.
  • the first battery protection circuit 120 can be implemented on the first chip, that is, the first switch unit 130 is not on the first chip at this time.
  • the first battery protection circuit 120 may not be implemented on the chip, and may be designed according to the needs of users.
  • the first switch unit 130 is built in the first battery protection circuit 120 (the first switch unit 130 is built in, at this time the first switch unit 130 and the first battery protection circuit 120 are built on the same chip) , at this time, the control terminal of the first switch unit 130 is electrically connected to the first logic control unit, the first terminal of the first switch unit 130 is electrically connected to the first power supply terminal VDD1, and the first power supply terminal VDD1 is connected to the first battery
  • the anode of 110 is electrically connected (the first switch unit 130 is placed down), the second end of the first switch unit 130 is electrically connected to the system terminal VM, and the system terminal VM is electrically connected to the system circuit 140 .
  • the first logic control unit controls the first switch unit 130 to turn on or turn off, so that when the first logic control unit controls the first switch unit 130 to turn on, the first battery 110 Power can be supplied to the system circuit 140 through the first switch unit 130, and the system circuit 140 is in a normal working mode.
  • the first battery protection circuit 120 may be implemented on a chip, that is, at this time, the first switch unit 130 and the first battery protection circuit 120 are located on the same chip.
  • the first battery protection circuit 120 may not be implemented on the chip, and may be designed according to the needs of users.
  • the first switch unit 130 includes a charge switch and a discharge switch, wherein the charge switch and the discharge switch are MOS or other suitable field effect transistors, such as NMOS, PMOS, etc., and the charge switch and discharge switch The switches are respectively electrically connected to the first logic control unit.
  • the switch control terminal CO/DO of the first battery protection circuit 120 includes a charge switch control terminal and a discharge switch control terminal.
  • the control end of the switch is electrically connected, the control end of the discharge switch is electrically connected to the control end of the discharge switch, the control end of the charge switch and the control end of the discharge switch are respectively electrically connected to the first logic control unit, and the first logic control unit realizes the charging switch, discharge switch control.
  • the discharge circuit of the first battery 110 can be disconnected by turning off the discharge switch at this time, and the charging switch can be turned on or off at this time.
  • the first switch unit 130 may also include a switch tube and a substrate control circuit, the switch tube is a MOS or other field effect tube, etc., and the control terminal of the switch tube and the switch control terminal CO/DO Electrically connected, the substrate control circuit is electrically connected to the first logic control unit, the substrate control circuit is used to realize the correct biasing of the substrate of the switch tube, for example, when the first battery 110 is discharged and the first battery 110 is charged, the switch tube at different biases.
  • the present application is not limited thereto, and in other embodiments of the present application, the first switch unit 130 may also be other conventional implementation forms in the art.
  • the first battery protection circuit 120 is electrically connected to the first contact.
  • the first power supply contact GCD1 there are two first contacts, namely the first power supply contact GCD1 and the first ground contact DCD1, wherein the first power supply contact GCD1 communicates with the first power supply contact GCD1 via the charging management circuit.
  • a positive electrode of a battery 110 is electrically connected, and the first ground contact DCD1 is electrically connected to the second terminal of the first switch unit 130 . Therefore, when the wireless earphone 100 is put back into the charging compartment 200 and the charging circuit is turned on, the charging compartment 200 can charge the first battery 110 through the first power supply contact GCD1 and the first ground contact DCD1 .
  • the first power supply contact GCD1 is also electrically connected to the system circuit 140 , so that the charging compartment 200 can also communicate with the system circuit 140 through the first power supply contact GCD1 .
  • the charging bin 200 includes a plurality of second contacts, the number of the second contacts corresponds to the number of the first contacts, and the second contacts include the second power supply contact GCD2 and the second ground contact DCD2 , when the wireless earphone 100 is put into the charging compartment 200, the second power supply contact GCD2 is electrically connected to the first power supply contact GCD1, and the second ground contact DCD2 is electrically connected to the first ground contact DCD1, so that the charging compartment 200 and the first ground contact DCD1 are electrically connected. Power transmission and communication of the wireless earphone 100.
  • the first power supply contact GCD1 and the second power supply contact GCD2 realize contact electrical connection
  • the first ground contact DCD1 and the second ground contact DCD2 realize contact electrical connection
  • the first contact includes a conductive contact piece, a conductive pin, a conductive post, a conductive tongue or a golden finger
  • the second contact includes a pogopin, which can realize the first The contact and the second contact are relatively good contact electrical connections.
  • the charging box 200 will output a reset signal, and the reset signal will be output to the first battery protection circuit 120 through the second contact and the first contact, without going through the system circuit 140, the first
  • the first logic control unit of the first battery protection circuit 120 controls the first switch unit 130 to be disconnected, where the disconnection is the disconnection of the discharge switch, so that the discharge circuit of the first battery 110 disconnected, the system circuit 140 is stopped from supplying power, and then after the first preset period of time is disconnected, the first logic control unit controls the first switch unit 130 to turn on again to restore the first battery 110 to supply power to the system circuit 140, At this time, the system circuit 140 is powered again, the system circuit 140 reloads data and programs, and the wireless earphone 100 is reset and restarted normally.
  • the first preset time period can be set according to user needs, for example, the range of the first preset time period is 10ms-5s, such as 10ms, 50ms, 100ms, 200ms, 300ms, 400ms, 500ms , 600ms, 700ms, 800ms, 900ms, 1s, 1.5s, 2s, 2.5s, 3s, 3.5s, 4s, 4.5s, 5s, etc.
  • the reset signal is sent to the wireless earphone 100 through the charging compartment 200, and the first switch unit 130 in the existing wireless earphone 100 is used to realize the reset and restart function of the system circuit 140, and there is no need to separately add a reset IC chip and a reset IC chip
  • the matched second switch unit greatly reduces the cost and increases the competitiveness of the wireless earphone components.
  • the charging compartment 200 can directly send a reset signal to the first battery protection circuit 120 through the second contact and the first contact, without the need for the system circuit 140. Intervention can overcome the defect that the system circuit 140 of the wireless earphone 100 is completely dead and cannot generate or output a reset signal, realize the reset and restart of the system circuit 140, and restore the system circuit 140 of the wireless earphone 100 to normal.
  • the first battery protection circuit 120 further includes a reset terminal CTL, which is used to reset and restart the system circuit 140, and the reset terminal CTL is electrically connected to the first power supply contact GCD1. Therefore, when the charging compartment 200 sends a reset signal through the second power supply contact GCD2 and the first power supply contact GCD1, the reset terminal CTL will receive the reset signal, and the reset signal is a signal that the charging compartment 200 and the wireless earphone 100 have agreed.
  • the first battery protection circuit 120 can recognize the reset signal according to the relevant protocol. When the first battery protection circuit 120 recognizes the reset signal, the first logic control unit of the first battery protection circuit 120 controls the first switch unit 130 to turn off for the first preset time.
  • the first switch unit 130 is turned on again, and the first battery 110 resumes supplying power to the system circuit 140 to realize the reset and restart of the system circuit 140, so that the wireless earphone 100 can recover from the dead state, and the wireless earphone 100 can be used normally.
  • the system circuit 140 is also electrically connected to the first power supply contact GCD1 to realize the communication between the charging case 200 and the system circuit 140 after the wireless earphone 100 is put back into the charging case 200 . That is, in this embodiment, the first power supply contact GCD1 not only transmits a reset signal, but also transmits a communication signal with the system circuit 140 , and both signals are pulse signals.
  • the communication signal includes the first pulse signal, and the communication signal is distinguished by calculating the number of first pulse signals accumulated in a continuous or preset time period, wherein the first pulse signal is For a pulse signal of one cycle, the time width ratio of the high level and low level of the first pulse signal has been preset; the reset signal includes the second pulse signal, the second pulse signal is a pulse signal of one cycle, and the second pulse The proportion of the time width of the signal high level and low level has been preset, and the period of the second pulse signal can be the same as or different from the period of the first pulse signal.
  • the high level time width (first pulse width) of the first pulse signal is different from the high level time width (second pulse width) of the second pulse signal
  • the first pulse width range 1ms-2.5ms, such as 1ms, 1.1ms, 1.2ms, 1.3ms, 1.4ms, 1.5ms, 1.6ms, 1.7ms, 1.8ms, 1.9ms, 2ms, 2.1ms, 2.2ms, 2.3ms, 2.4ms , 2.5ms, etc.
  • the range of the second pulse width is 2.5sm-4sm, such as 2.5ms, 2.6ms, 2.7ms, 2.8ms, 2.9ms, 3ms, 3.1ms, 3.2ms, 3.3ms, 3.4ms, 3.5ms , 3.6ms, 3.7ms, 3.8ms, 3.9ms, 4ms, etc.
  • the second pulse width is 3ms as an example for illustration.
  • the flat time widths are the same or different, so that the first battery protection circuit 120 can determine whether it is a normal communication signal or a reset signal by detecting the time width of the high level of the pulse signal and the number of pulse signals, which can greatly improve the Avoid false triggering of reset signals or communication signals.
  • the first battery protection circuit 120 is triggered by rising and falling edges, and the first battery protection circuit 120 receives a high-level signal with a second pulse width, and receives 5 or more signals continuously or within a preset period of time.
  • the second pulse signal is the second pulse signal.
  • 16 second pulse signals constitute a reset signal as an example for illustration.
  • the first battery protection circuit 120 determines that the pulse signal is a reset signal. In this embodiment, by calculating the high-level pulse Wide width and calculated quantity can greatly avoid false triggering.
  • the low-level time width (first pulse width) of the first pulse signal is different from the low-level time width (second pulse width) of the second pulse signal
  • the second The time width of the high level of a pulse signal is the same as or different from that of the second pulse signal
  • the first battery protection circuit 120 detects the time width of the low level of the pulse signal and the number of pulse signals It can be determined whether it is a normal communication signal or a reset signal.
  • the time width of the high level of the first pulse signal is different from the time width of the high level of the second pulse signal (second high pulse width).
  • the low-level time width (first low pulse width) of the first pulse signal is different from the low-level time width (second low pulse width) of the second pulse signal, at this time the period of the second pulse signal
  • the first battery protection circuit 120 determines whether it is a normal communication signal or a reset signal by detecting the time width of the high level, the width of the low level and the number of pulse signals of the pulse signal.
  • the reset signal includes 16 continuous second pulse signals or includes 16 accumulated second pulse signals. But the present application is not limited thereto. In other embodiments of the present application, the reset signal may also include multiple second pulse signals and multiple first pulse signals, which can be set by those skilled in the art according to actual requirements.
  • the time width (first pulse width) of the high level and/or low level of the first pulse signal is different from the time width (second pulse width) of the high level and/or low level of the second pulse signal. ) and the difference is greater than 10%, that is, the time width of the high level and/or low level of the first pulse signal is at least 10% larger or smaller than the time width of the high level and/or low level of the second pulse signal At least 10%, the error of the pulse time width during general pulse generation can be controlled within 10%, so even if the pulse generating device generates an error, the first battery protection circuit 120 will not misjudge the first pulse signal as the second pulse signal , or misjudge the second pulse signal as the first pulse signal.
  • the time width of the high level and/or low level of the first pulse signal is preferably at least 20% greater or at least 20% smaller than the time width of the high level and/or low level of the second pulse signal, so Misjudgment can be further prevented.
  • the first logic control unit of the first battery protection circuit 120 includes a CTL signal sampling unit 121, a first pulse width timing unit 1221, a first pulse counting unit 1231, a clock generating unit 124, Sampling timing unit 125, restart control unit 126, wherein, CTL signal sampling unit 121 is electrically connected with reset terminal CTL, and CTL signal sampling unit 121 is respectively connected with first pulse width timing unit 1221, clock generation unit 124, restart control unit 126 electrically connected , the first pulse width timing unit 1221 is electrically connected to the first pulse counting unit 1231, the clock generation unit 124 is electrically connected to the sampling timing unit 125 and the restart control unit 126 respectively, and the sampling timing unit 125 is electrically connected to the first pulse counting unit 1231, The first pulse counting unit 1231 is electrically connected to the restart control unit 126, the output terminal Rset of the restart control unit 126 is used to electrically connect to the control terminal of the first switch unit 130, and the restart control unit 126 controls the
  • the CTL signal sampling unit 121 is used to receive the pulse signal received by the reset terminal CTL, and the CTL signal sampling unit 121 collects the reset terminal CTL in real time or time-division pulse signal, CTL signal sampling unit 121 controls clock generation unit 124 to output clock pulses to sampling timing unit 125, and sampling timing unit 125 is used to time CTL signal sampling unit 121, and CTL signal sampling unit 121 outputs the pulse signal received to
  • the first pulse width timing unit 1221 the first pulse width timing unit 1221 is used to judge whether the duration of the high level of the pulse signal is equal to the second pulse width or within the error range, if so, it is determined as a second pulse signal, And the second pulse signal is delivered to the first pulse counting unit 1231, and the first pulse counting unit 1231 counts the number of the second pulse signal plus 1, if otherwise it is not delivered to the first pulse counting unit 1231; when the first pulse counting The quantity of the second pulse signal obtained by the unit 12
  • the sixth preset time period is, for example, 50-150ms, such as 50sm, 60sm, 70sm, 75sm, 80sm, 90sm, 100sm, 110sm, 120sm, 125sm, 130sm, 140sm, 150sm, etc., the first amount
  • the threshold is, for example, greater than or equal to 5, such as 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 22, 24, 25, 28, 30 and so on.
  • the first pulse counting unit 1231 counts the number of continuous second pulse signals or the number of accumulated second pulse signals, which can be set according to user requirements.
  • the triggering of the charging bin 200 to send the reset signal may include the following methods:
  • the charging compartment 200 sends the first communication signal to the system circuit 140 of the wireless earphone 100 through the second contact and the first contact, or the charging compartment 200 sends the first communication signal wirelessly.
  • the communication signal is sent to the system circuit 140 of the wireless earphone 100. If the system circuit 140 is not dead, the general system circuit 140 sends a feedback signal to the charging compartment 200 via the first contact, the second contact or wirelessly.
  • the system circuit 140 will not send a feedback signal to the charging bin 200 after receiving the first communication signal, and when the charging bin 200 does not receive a feedback signal within the second preset time period after sending the first communication signal, the charging bin 200, it is considered that the system circuit 140 is dead, and the charging compartment 200 generates a reset signal and outputs it to the first battery protection circuit 120 through the second contact and the first contact.
  • the duration of the second preset time period can be set according to user requirements, for example, a time period of several milliseconds to several seconds.
  • the reset button can be a single button or a button with multiple functions. After the user judges that the wireless headset 100 is dead, the user presses the button to charge The reset signal is triggered by means of the reset button on the bin 200, the duration of pressing the reset button, the number of times the reset button is pressed, or pressing multiple buttons at the same time.
  • the charging bin 200 sends a reset verification signal to the system circuit 140 for the third preset time period after the reset signal is output by the charging bin 200 for verifying the system circuit. Whether the 140 is reset, that is, whether it returns to normal from the dead state, and records the number of times the reset verification signal is sent as 1.
  • the charging bin 200 If the charging bin 200 receives a reply signal corresponding to the reset verification signal, the charging bin 200 knows that the system circuit 140 has returned to normal , and set the number of times of sending the reset verification signal to 0, if the charging case 200 does not receive the reply signal corresponding to the reset verification signal within the preset time period, the charging case 200 automatically sends the reset signal to the wireless earphone 100, after the third Send the reset verification signal again after a preset period of time, and record the number of times the reset verification signal is sent plus 1, which is 2,...
  • the charging compartment 200 stops automatically sending the reset signal, the charging bin 200 sends out an alarm to tell the user that the system circuit 140 has not been reset successfully.
  • the first threshold is, for example, 3, 4, 5, 6, 7, 8, 9, 10 and other numbers.
  • the third preset time period is greater than the first preset time period.
  • the charging compartment 200 also outputs a shipping incoming signal, and the shipping incoming signal is output to the first contact via the second contact and the first contact.
  • the battery protection circuit 120 triggers the first battery protection circuit 120 to enter the shipping mode, and in the shipping mode the first switch unit 130 is turned off so that the first battery 110 stops supplying power to the system circuit 140, that is, the discharge circuit of the first battery 110 is disconnected, the discharge switch is disconnected at this time, and the first battery protection circuit 120 is in the 0 power consumption mode in the shipping mode.
  • the zero power consumption mode does not mean that the power consumption is actually zero, but that the power consumption is close to zero.
  • the charging compartment 200 sends the shipping incoming signal to the wireless earphone 100 instead of the system circuit 140 of the wireless earphone 100 sending the shipping incoming signal or triggering the sending of the shipping incoming signal through the button on the wireless earphone 100, which can be further improved.
  • the first battery protection circuit 120 can successfully enter the shipping mode, which improves the reliability.
  • the first battery protection circuit 120 may not be in the zero power consumption mode in the shipping mode. At this time, the first battery protection circuit 120 works normally or at least some modules do not consume power.
  • the first battery protection circuit 120 receives the shipping incoming signal through the reset terminal CTL, that is, the reset terminal CTL can be time-divisionally multiplexed, so there is no need to separately set the shipping terminal, which is beneficial to reduce costs. Therefore, the charging compartment 200 outputs a shipping entry signal to the first battery protection circuit 120 through the second power supply contact GCD2 , the first power supply contact GCD1 , and the reset terminal CTL.
  • the first battery protection circuit 120 may be respectively provided with a reset terminal CTL and a shipping terminal, and the reset terminal CTL and the shipping terminal are electrically connected to the first power supply contact GCD1 respectively.
  • the shipping incoming signal includes a third pulse signal
  • the third pulse signal is a pulse signal of one period
  • the time width ratio of the high level and low level of the third pulse signal has been preset.
  • the period of the pulse signal may be the same as or different from the periods of the first pulse signal and the second pulse signal.
  • the time width of the high level of the third pulse signal (third pulse width) is the same as the time width of the high level of the first pulse signal (first pulse width), and the high level of the second pulse signal
  • the time width (second pulse width) is different, for example, the third pulse width range is 4sm-6.5ms, such as 4ms, 4.1ms, 4.2ms, 4.3ms, 4.4ms, 4.5ms, 4.6ms, 4.7ms, 4.8 ms, 4.9ms, 5ms, 5.1ms, 5.2ms, 5.3ms, 5.4ms, 5.5ms, 5.6ms, 5.7ms, 5.8ms, 5.9ms, 6ms, 6.1ms, 6.2ms, 6.3ms, 6.4ms, 6.5ms etc.
  • this embodiment takes the third pulse width of 5 ms as an example for illustration, the time width of the low level of the third pulse signal is the same as the time width of the low level of the first
  • the first battery protection circuit 120 is triggered by rising and falling edges, and the first battery protection circuit 120 receives a high-level signal with a third pulse width, and receives 5 or more signals continuously or within a preset period of time.
  • 24 third pulse signals constitute a shipping incoming signal as an example. Then the first battery protection circuit 120 determines that the pulse signal is a shipping incoming signal.
  • the high The pulse width of the level and the calculation quantity can greatly avoid false triggering.
  • the time width of the low level of the third pulse signal (third pulse width) is the same as the time width of the low level of the first pulse signal (first pulse width), the second pulse The time width (second pulse width) of the low level of the signal is different, the time width of the high level of the third pulse signal and the time width of the high level of the first pulse signal, the high level of the second pulse signal
  • the time widths are the same or different, and the first battery protection circuit 120 can determine whether it is a normal communication signal or a shipping incoming signal by detecting the time width of the low level of the pulse signal and the number of pulse signals.
  • the time width of the high level of the third pulse signal (the third high pulse width) is the same as the time width of the high level of the first pulse signal (the first high pulse width)
  • the second The time width of the high level of the two pulse signals (the second high pulse width) is different
  • the time width of the low level of the third pulse signal (the third low pulse width) is different from the time of the low level of the first pulse signal Width (the first low pulse width)
  • the time width (second low pulse width) of the low level of the second pulse signal is also different
  • the period of the third pulse signal is now the period of the first pulse signal, the period of the second pulse
  • the first battery protection circuit 120 determines whether it is a normal communication signal or a shipping incoming signal by detecting the time width of the high level, the time width of the low level and the number of pulse signals of the pulse signal.
  • the ship entry signal includes 24 consecutive third pulse signals or includes 24 accumulated third pulse signals.
  • the difference between the shipping entry signal and the reset signal is the number of second pulse signals.
  • the reset signal contains 16 second pulse signals
  • the shipping entry signal contains 24 second pulse signals. pulse signal, or vice versa. In this way, the shipping entry signal and the reset signal are not easily confused with common communication signals, and the reset signal and the shipping entry signal are not easily confused, which can reduce the number of pulse generating devices or reduce the complexity of the pulse generating device.
  • the time width (third pulse width) of the high level and/or low level of the third pulse signal is different from the time width (first pulse width) of the high level and/or low level of the first pulse signal.
  • the time width (second pulse width) of the high level and/or low level of the second pulse signal differs more than 10%, and the error of the pulse width can be controlled within 10% when the general pulse is generated, so even if the pulse occurs Even if the device generates an error, the first battery protection circuit 120 will not misjudge the first pulse signal as the second pulse signal, the third pulse signal, or vice versa.
  • the time width of the high level and/or low level of the third pulse signal is shorter than the time width of the high level and/or low level of the first pulse signal, the high level and/or low level of the second pulse signal
  • the flat time width is preferably at least 20% larger or at least 20% smaller, which can further prevent misjudgment.
  • the first logic control unit of the first battery protection circuit 120 includes a CTL signal sampling unit 121, a first pulse width timing unit 1221, a second pulse width timing unit 1222, a first pulse counting unit Unit 1231, second pulse counting unit 1232, clock generation unit 124, sampling timing unit 125, restart control unit 126, shipping control unit 127, wherein, first pulse width timing unit 1221, first pulse counting unit 1231, restart control The connection relationship of the unit 126 has been described above, and will not be repeated here.
  • the CTL signal sampling unit 121 is also electrically connected to the second pulse width timing unit 1222 and the first output terminal SM of the shipping control unit 127, and the second pulse width timing unit 1222 is electrically connected to the second pulse counting unit 1232.
  • the clock generating unit 124 is also electrically connected with the shipping control unit 127
  • the sampling timing unit 125 is also electrically connected with the second pulse counting unit 1232
  • the second pulse counting unit 1232 is electrically connected with the shipping control unit 127
  • the second output terminal SN of 127 is used to electrically connect with the control terminal of the first switch unit 130, and the shipping control unit 127 controls whether the first battery protection circuit 120 enters the shipping mode according to the input signal.
  • the CTL signal sampling unit 121 is used to receive the pulse signal received by the reset terminal CTL, and the CTL signal sampling unit 121 collects the reset terminal CTL in real time or time-division signal, the CTL signal sampling unit 121 controls the clock generation unit 124 to output clock pulses to the sampling timing unit 125, the sampling timing unit 125 is used to time the CTL signal sampling unit 121, and the CTL signal sampling unit 121 outputs the received pulse signal to the first Two pulse width timing unit 1222, the second pulse width timing unit 1222 is used for judging whether the duration of the high level is equal to the third pulse width or within the error range, if so, it is judged as a third pulse signal, and the second pulse width
  • the three pulse signals are delivered to the second pulse counting unit 1232, and the second pulse counting unit 1232 counts the number of the third pulse signal plus 1, if otherwise it is not delivered to the second pulse counting unit 1232; when the second pulse counting unit 1232 obtains
  • the shipping control unit 127 is clocked by the clock generation unit 124, and the duration of the pulling up is greater than or equal to the ninth preset time period; when the shipping control The unit 127 counts the eighth preset time period, and the shipping control unit 127 outputs a shipping control signal for enabling the first battery protection circuit 120 to enter the shipping mode.
  • the second pulse counting unit 1232 If the number of the third pulse signal obtained by the second pulse counting unit 1232 is less than the second number threshold within the seventh preset time period, the second pulse counting unit 1232 outputs a fourth signal to the shipping control unit 127, and the shipping control The unit 127 does not output the shipping control signal thereafter, and the shipping control unit 127 also outputs a reset signal to the CTL signal sampling unit 121, and the CTL signal sampling unit 121 outputs a zero-setting signal for controlling the second pulse counting unit 1232.
  • the number of the three pulse signals is set to zero and the sampling timing unit is controlled to re-time, and the CTL signal sampling unit 121 starts a new round of sampling of the pulse signal.
  • the seventh preset time period is, for example, 100-300ms, such as 100sm, 110sm, 120sm, 130sm, 140sm, 150sm, 160sm, 170sm, 180sm, 185sm, 190sm, 200sm, 210sm, 220sm, 230sm, 240sm, 250sm, 260sm, 270sm, 280sm, 290sm, 300sm, etc.
  • the seventh preset time period in this embodiment is 200ms
  • the eighth preset time period is, for example, 0.5s-5s, such as 0.5s, 1s, 1.5s, 2s, 2.5s, 3s, 3.5s, 4s, 4.5s, 5s, etc.
  • the eighth preset time period in this embodiment is 2s
  • the second quantity threshold is, for example, greater than or equal to 5, such as 5, 6, 7, 8 , 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 35, 40, 45,
  • the first battery protection circuit 120 when the first battery protection circuit 120 is in the shipping mode, the first terminal of the first switch unit 130 is electrically connected to the negative pole of the battery (the first switch unit is placed downward), and at this time, the system terminal VM is pulled High is a high level, the charging compartment 200 does not charge the wireless earphone 100, preventing the charging compartment 200 from charging the first battery 110 and causing the voltage of the system terminal VM of the first battery protection circuit 120 to be pulled down, causing the first battery protection circuit 120
  • the second ground contact DCD2 When exiting the shipping mode, the second ground contact DCD2 is suspended, for example, or the charging compartment 200 makes the second ground contact DCD2 a high level.
  • the system terminal VM is pulled down to be low at this time.
  • the charging compartment 200 does not charge the wireless earphone 100, preventing the charging compartment 200 from charging the first battery 110 and causing the potential of the system terminal VM of the first battery protection circuit 120 to be pulled up, causing the first battery protection circuit 120 to withdraw from the ship mode, at this time, the second ground contact DCD2 is suspended, for example, or the charging compartment 200 makes the second ground contact DCD2 low.
  • the charging bin 200 will detect whether the first battery protection circuit 120 receives the shipping incoming signal. Specifically, the shipping control unit 127 delays outputting the shipping control signal for an eighth preset time period after receiving the shipping entry signal, and the shipping control signal is used to make the first battery protection circuit 120 enter the shipping mode. During a preset period of time, the first battery protection circuit 120 sends a shipping feedback signal to the charging bin 200, and the charging bin 200 judges whether the first battery protection circuit 120 successfully receives the shipping incoming signal by detecting whether the shipping feedback signal is obtained.
  • the shipping feedback signal is output to the charging bin 200 via the reset terminal CTL, the first power supply contact GCD1 , and the second power supply contact GCD2 .
  • the shipping feedback signal includes a high-level signal that lasts for a ninth preset time period.
  • the shipping feedback signal is a negotiated signal between the first battery protection circuit 120, the system circuit 140, and the charging compartment 200, and the duration of the ninth preset time period is shorter than the duration of the eighth preset time period, for example, the ninth time period is the same as the eighth preset time period.
  • the ratio range of the time period is between 1/4-1, such as 1/4, 1/3, 1/2, 2/3, 3/4, 4/5, 5/6, 6/7, 7 /8, 8/9, 9/10, etc.
  • the shipping feedback signal may also be other signals that are easily realized by those skilled in the art, such as a preset number of preset pulse signals within a ninth preset time.
  • the charging bin 200 detects whether the signal of the reset terminal CTL is pulled up to a high level via the second power supply contact GCD2 and the first power supply contact GCD1. If it is detected that the signal of the reset terminal CTL is pulled up to a high level for a time greater than or equal to the ninth preset time period, then the charging compartment 200 knows that the first battery protection circuit 120 has received the ship entry signal, and then enters the ship.
  • the charging bin 200 In this mode, if the charging bin 200 does not detect that the signal of the reset terminal CTL is pulled high to a high level within the fourth preset time period, the charging bin 200 knows that the first battery If the protection circuit 120 does not receive the shipping entry signal, the charging compartment 200 sends out a prompt signal to remind the manufacturer or transporter that the wireless earphone 100 fails to receive the shipping entry signal, and will not successfully enter the shipping mode thereafter.
  • the fourth preset time period is longer than the eighth preset time period.
  • the shipping feedback signal is output to the charging compartment 200 via the system terminal VM, the first ground contact DCD1 , and the second ground contact DCD2 .
  • the shipping feedback signal can also be output to the charging bin 200 and the system circuit 140 through other terminals.
  • the first battery protection circuit 120 delays the eighth preset time period when the first battery protection circuit 120 recognizes the shipping incoming signal, and the first battery protection circuit 120 outputs the shipping signal during the eighth preset time period.
  • the feedback signal is given to the system circuit 140, and the system circuit 140 includes a micro-control unit. After the micro-control unit receives and recognizes the shipping feedback signal, the micro-control unit controls the system circuit 140 to shut down in order, and the system circuit 140 can be shut down soon, and the system After the circuit 140 recognizes the shipping feedback signal, it shuts down at the level of milliseconds or microseconds, and the first battery protection circuit 120 enters the shipping mode after the eighth preset time period.
  • the first battery protection circuit 120 shuts down the system circuit 140 before entering the shipping mode, so as to prevent the system circuit 140 from hard power-off due to the disconnection of the first switch unit 130, which may damage the software and hardware of the system circuit 140
  • the processing method of shutting down the system circuit 140 first and then entering the shipping mode can protect the security of the software and hardware of the system circuit 140 .
  • the shipping feedback signal is output to the system circuit 140 through the reset terminal CTL, that is, the reset terminal CTL is an input and output terminal.
  • the first battery protection circuit 120 outputs a shipping feedback signal when the first battery protection circuit 120 recognizes the shipping incoming signal.
  • the present application is not limited thereto.
  • the first battery protection circuit 120 may delay outputting the shipping feedback signal for a period of time after the first battery protection circuit 120 recognizes the shipping incoming signal. It is sufficient that the system circuit 140 can be shut down within the eighth preset time period.
  • the first logic control unit After the first battery protection circuit 120 receives the shipping incoming signal, the first logic control unit will identify it. When the second pulse counting unit 1232 of the first logic control unit recognizes the shipping incoming signal , the second pulse counting unit 1232 outputs a signal to the shipping control unit 127, the shipping control unit 127 delays the eighth preset time period to output the shipping control signal, and the first battery protection circuit 120 delays the eighth preset time period to enter the shipping model.
  • the system circuit 140 also sends a shutdown success signal within the eighth preset time period, and the shutdown success signal is output to the first battery protection circuit 120 through the reset terminal CTL to tell the first
  • the shipping control unit 127 outputs a shipping control signal for controlling the first battery protection circuit 120 to enter the shipping mode after the eighth preset time period.
  • the shipping control unit 127 can immediately output the shipping control signal without waiting for the eighth preset time period, which can save time.
  • the charging bin 200 communicates with the upper computer via wired or wireless communication, and the upper computer triggers the charging bin 200 to generate and output a shipping incoming signal. All charging pods 200 in the area generate and output a ship-entry signal.
  • the volume of the wireless earphone 100 can be further reduced by disposing the ship-entry signal generating device in the charging compartment 200 instead of the wireless earphone 100 , which is beneficial to the miniaturization of the wireless earphone 100 .
  • the charging compartment 200 includes a compartment body and a compartment cover. One end of the compartment cover is hinged to one end of the compartment body. The compartment cover covers the compartment body to form an accommodating cavity.
  • the container is used to accommodate the wireless earphone 100.
  • the compartment cover can be opened or closure. After the charging bin 200 knows that the wireless earphone 100 has entered the shipping mode, when the user opens the cover of the charging bin 200, and the charging bin 200 detects the cover opening signal, for example, it detects that the user opens the charging bin through the cooperation of the magnet and the Hall sensor.
  • the compartment cover of 200 for example, the magnet is located on the compartment cover, and the Hall sensor is located on the compartment body connected to the compartment cover, or conversely, the charging compartment 200 starts to charge the wireless earphone 100 via the second contact and the first contact, thereby
  • the potential of the system terminal VM of the first battery protection circuit 120 is pulled down, so that the first battery protection circuit 120 exits the shipping mode, the first battery protection circuit 120 resumes normal operation, and the first switch unit 130 is controlled to be turned on.
  • the battery 110 resumes supplying power to the system circuit 140 , and when the user takes out the wireless earphone 100 from the charging compartment 200 , the wireless earphone 100 can work normally.
  • the wireless earphone 100 further includes a charge management circuit, one end of the charge management circuit is connected to the positive pole of the first battery 110 (the first switch unit is placed below) or the first switch unit 130 (the first switch unit is placed above). The second end is electrically connected, and the other end of the charging management circuit is electrically connected to the first power supply contact GCD1, and the charging management circuit is used to provide a charging voltage and a charging current that conform to the charging curve of the first battery 110 .
  • the first battery protection circuit 120 is located on the first chip, and the first switch unit 130 is located outside the first chip.
  • the first switch unit 130 and the first battery protection circuit 120 may be packaged together or not. Packaged together. But the present application is not limited thereto. In other embodiments of the present application, the first battery protection circuit 120 and the first switch unit 130 are located on the same chip.
  • the first battery protection circuit 120 may only have a reset and restart function, or may only have a function of entering the shipping mode.
  • the battery protection component composed of the first battery protection circuit 120 and the first switch unit 130 is not limited to be used for wireless earphones, but can also be used for other electronic devices, such as electronic cigarettes, etc., the first The battery protection circuit 120 can determine whether it is a normal communication signal, a reset signal, or a ship entering signal by detecting the time width of the high level and/or the time width of the low level and the number of pulse signals of the pulse signal.
  • the charging bin 200 further includes an internal circuit 210 of the charging bin, and the internal circuit 210 of the charging bin is electrically connected to the second contact.
  • the internal circuit 210 of the charging compartment includes a second battery, a second battery protection circuit, a third switch unit, a switch circuit, and the like.
  • the capacity of the second battery is greater than the capacity of the first battery 110, for example, the capacity of the second battery is 2 times, 3 times, 4 times, 5 times, 8 times, 10 times of the capacity of the first battery 110 , 20 times, 30 times, 40 times, 50 times, etc.
  • the second battery is used to charge the first battery 110 when the wireless earphone 100 is accommodated in the charging compartment 200;
  • the second battery protection circuit includes a second power supply terminal, a second battery Two power supply ground terminals, the second over-discharge voltage protection unit, the second discharge over-current protection unit, the second reference voltage generation unit, the second logic control unit, the second power supply terminal and the second power supply ground terminal correspond to the second battery
  • the positive and negative poles are electrically connected, the second logic control unit is electrically connected to the third switch unit for controlling the opening or closing of the third switch unit, and the third switch unit is used to control the second battery to supply power to the switching circuit;
  • the switching circuit It is electrically connected with the second contact, and the switching circuit is used to
  • an embodiment of the present application also provides a method for controlling a battery protection component, including the following steps:
  • the battery protection module recognizes the incoming signal of the ship
  • the battery protection component delays entering the shipping mode for an eighth preset time period and outputs a shipping feedback signal to the system circuit 140 to shut down the system circuit 140 within the eighth preset time period.
  • Figure 7 is a circuit block diagram of the wireless earphone assembly of the second embodiment of the present application, this embodiment is similar to the first embodiment, so the parts not described in this embodiment can refer to the first embodiment, this embodiment
  • the main difference between this example and the first embodiment is the number of first contacts and second contacts.
  • the number of the first contacts is three, which are respectively the first power supply contact GCD1, the first ground contact DCD1 and the first communication contact TCD1, and the number of the second contacts is the same as that of the first contacts Corresponding to the numbers, they are respectively the second power supply contact GCD2, the second ground contact DCD2 and the second communication contact TCD2.
  • the first power supply contact GCD1 is electrically connected to the second power supply contact GCD2
  • the first ground contact DCD1 is electrically connected to the second ground contact DCD2
  • the point TCD1 is electrically contacted with the second communication contact TCD2.
  • the number of first contacts may be more, and the number of second contacts may also be more.
  • the first power supply contact GCD1, the first ground contact DCD1, the second power supply contact GCD2, and the second ground contact DCD2 are mainly used for the charging compartment 200 to charge the first battery 110 of the wireless earphone 100
  • the first communication contact TCD1 and the second communication contact TCD2 are mainly used for communication between the charging case 200 and the wireless earphone 100
  • the first power supply contact GCD1 is electrically connected to the positive pole of the first battery 110 via the charge management circuit
  • the first ground contact DCD1 is electrically connected to the second end of the first switch unit 130
  • the first communication contact TCD1 is electrically connected to the reset terminal CTL of the system circuit 140 and the first battery protection circuit 120 respectively.
  • the first communication contact TCD1 and the second communication contact TCD2 are not only used to receive and send communication signals between the charging bin 200 and the system circuit 140, but the first communication contact TCD1 is also used to receive the charging bin 200 via The reset signal output by the second communication contact TCD2, after the reset terminal CTL of the first battery protection circuit 120 receives the reset signal, the first logic control unit of the first battery protection circuit 120 controls the first switch unit 130 to turn off so that the second A battery 110 stops supplying power to the system circuit 140, specifically to disconnect the discharge circuit of the first battery 110, and the first logic control unit controls the first switch unit 130 to turn on after the first switch unit 130 is turned off for a first preset time period.
  • the first battery 110 is restored to supply power to the system circuit 140, so that the system circuit 140 is reset and restarted, and the system circuit 140 returns to normal from the dead state.
  • the first communication contact TCD1 is also used to receive the incoming ship signal.
  • Figure 8 is a circuit block diagram of the electronic device of the third embodiment of the present application, the battery protection component of this embodiment is similar to the first embodiment, so the parts not described in this embodiment can refer to the first embodiment
  • the main difference between this embodiment and the first embodiment is that the battery protection component further includes a capacitance detection circuit 2200 .
  • this embodiment provides an electronic device, such as an electronic cigarette, and this embodiment takes the electronic device as an electronic cigarette as an example for illustration.
  • the electronic device is, for example, the wireless earphone assembly of the first embodiment.
  • the electronic cigarette may be a conventional electronic cigarette or a disposable electronic cigarette.
  • the electronic cigarette includes a cigarette stick and a pod, and the pod is connected to the pod.
  • the pod can be a replaceable pod, that is, the pod can be removed from the pod and replaced with a new pod, the pod can be reused, and the pod will be allocated with the first battery 110 Charging interface for charging.
  • the pod can also be a non-replaceable pod, that is, the pod cannot be removed from the device for replacement. At this time, the device will not be allocated a charging port for charging the first battery 110 .
  • the tobacco rod includes a hollow tobacco rod casing, a first battery 110 , a battery protection component, a system circuit 140 and an airflow sensor 133 .
  • the first battery 110, the battery protection component, the system circuit 140 and the air flow sensor 133 are located in the cigarette rod casing;
  • the battery protection component includes a first battery protection circuit 120 and a first switch unit 130, the first battery protection circuit 120, the first Please refer to the first embodiment for the connection relationship of the switch unit 130 , the first battery 110 , and the system circuit 140 , and details are not repeated here.
  • the system circuit 140 includes a Microcontroller Unit (MCU, Microcontroller Unit), etc.
  • the airflow sensor 133 is, for example, a microphone or MEMS.
  • the system circuit 140 is electrically connected to the airflow sensor 133 and the atomizer 132 in the cartridge, respectively.
  • the first battery protection circuit 120 further includes a capacitance detection circuit 2200 .
  • the capacitance detection circuit 2200 is used to electrically connect the detection electrode 2210 .
  • a battery protection circuit 120 is electrically connected, and when the capacitance detection circuit 2200 detects a change in capacitance, the capacitance detection circuit 2200 sends a shipping entry signal to the reset terminal CTL of the first battery protection circuit 120, and the reset terminal CTL transmits the shipping entry signal to CTL
  • the signal sampling unit 121, and then the shipping control unit 127 will identify the shipping incoming signal, and the shipping control unit 127 will delay the output of the shipping control signal for the eighth preset time period after recognizing the shipping incoming signal, and output the shipping control signal at the eighth preset time.
  • the first battery protection circuit 120 in the section outputs the shipping feedback signal to the system circuit 140 and the capacitance detection circuit 2200 through the reset terminal CTL.
  • the micro control unit of the system circuit 140 After the micro control unit of the system circuit 140 receives and recognizes the shipping feedback signal, the micro control unit controls The system circuit 140 is shut down in order, and the system circuit 140 can be shut down soon. After the system circuit 140 recognizes the shipping feedback signal, the shutdown is at the millisecond or microsecond level. After the eighth preset time period, the first battery protection circuit 120 enters Shipping mode. In this embodiment, the first battery protection circuit 120 shuts down the system circuit 140 before entering the shipping mode, so as to prevent the system circuit 140 from hard power-off due to the disconnection of the first switch unit 130, which may damage the software and hardware of the system circuit 140 The processing method of shutting down the system circuit 140 first and then entering the shipping mode can protect the security of the software and hardware of the system circuit 140 .
  • the capacitance detection circuit 2200 includes a capacitance detection unit 2220 , a second power supply terminal VDD2 , and a second power supply ground terminal GND2 .
  • the capacitance detection unit 2220 includes a sensor oscillation circuit, a sensor and reference detection circuit, a timing counter and function option control circuit, a touch detection circuit, an oscillation circuit, a voltage regulator circuit, a timing control circuit, an output mode and a drive circuit, etc., Since the detection principle of the capacitance by the capacitance detection unit 2220 is a conventional technique in the art, details are not repeated here.
  • FIG. 9 only exemplifies an implementation of the capacitance detection unit 2220.
  • the capacitance detection unit 2220 may also have other implementations, and may also include other units, or may not include some of the above-mentioned unit, which can be obtained by those skilled in the art through simple deformation, and this is also the scope of the present application.
  • the capacitance detection unit 2220 is electrically connected to the second power supply terminal VDD2 and the second power ground terminal GND2, and the second power supply terminal VDD2 and the second power ground terminal GND2 correspond to the positive and negative poles of the first battery 110 are electrically connected, so that the first battery 110 can supply power to the capacitance detection unit 2220 to make the capacitance detection unit 2220 work.
  • the capacitance detection circuit 2200 further includes a capacitance detection terminal CJ, and the capacitance detection terminal CJ is electrically connected to the capacitance detection unit 2220 .
  • the electronic cigarette also includes the above-mentioned detection electrode 2210, the detection electrode 2210 is electrically connected to the capacitance detection terminal CJ, the detection electrode 2210 and the capacitance detection circuit 2200 jointly detect whether the user's body part touches the surface of the electronic cigarette, for example, whether the user's lips touch the surface of the nozzle, Whether the user's palm touches the surface of the device, etc.
  • the number of detection electrodes 2210 is one or more, and the detection electrodes 2210 are electrically connected to the capacitance detection terminal CJ. That is, the detection electrodes 2210 are not exposed.
  • the detection electrode 2210 may also be located in other parts of the electronic cigarette, such as the cigarette rod.
  • the battery protection component further includes at least one reference capacitor C2, the reference capacitor C2 is located in the cigarette rod, and the reference capacitor C2 is connected in parallel with the detection electrode 2210 and is electrically connected to the capacitance detection terminal CJ.
  • the reference capacitance C2 between the capacitance detection terminal CJ and the ground.
  • the user's lips touch the suction nozzle, and a detection electrode 2210, the lips, and the ground generate a reference capacitance C2
  • the contact capacitance connected in parallel the total capacitance at this time is the sum of the reference capacitance C2 and the contact capacitance, so that the total capacitance increases, and at this time the RC time constant of the oscillation circuit in the capacitance detection unit 2220 increases correspondingly.
  • the capacitance detection unit 2220 may also implement capacitance change detection in other ways, such as conventional ways such as capacitance voltage division and charging time measurement.
  • the detection electrode 2210 may not be located at the suction nozzle of the pod, but may also be located on the cigarette rod.
  • the reference capacitor C2 may not be provided in the cigarette rod.
  • the total capacitance is not limited to increase, but may also decrease.
  • the capacitance detection circuit 2200 is also electrically connected to the first battery protection circuit 120, and when the capacitance detection circuit 2200 detects a change in capacitance, the capacitance detection circuit 2200 generates a ship entering signal or a ship exiting The signal is output to the first battery protection circuit 120 through the reset terminal CTL, and then the first battery protection circuit 120 actively enters or exits the shipping mode, and the first battery protection circuit 120 enters the shipping mode after the system circuit 140 is shut down.
  • the first switch unit 130 is disconnected so that the first battery 110 stops supplying power to the system circuit 140, so that the system circuit 140, atomizer 132, airflow sensor 133, etc. will not consume power under ideal conditions.
  • the system circuit 140, atomizer 132, airflow sensor 133 and other circuits are in zero power consumption mode, and the power consumption of the system circuit 140, atomizer 132, airflow sensor 133, charging management circuit and other circuits is close to zero.
  • the capacitance change means that the capacitance is greater than the second threshold or the capacitance is less than the second threshold.
  • the capacitance greater than or less than the second threshold includes the total capacitance itself greater than or less than the second threshold, and also includes charging due to capacitance changes. Changes in the discharge cycle, frequency, etc. result in the charge and discharge cycle, frequency, etc. being greater than or less than the second threshold, which is also within the range included in the capacitance change.
  • the second threshold may be preset according to user requirements. In this embodiment, if the second threshold is capacitance, the second threshold is selected to be greater than the value of the reference capacitance C2 and less than the sum of the reference capacitance C2 and the contact capacitance.
  • This embodiment is to make full use of this time difference to change the mode of the electronic cigarette from shipping to Normal working mode, that is, exiting shipping mode.
  • the capacitance detection unit 2220 when the user's lips touch the suction nozzle, the capacitance detection unit 2220 will detect that the total capacitance increases, such as through frequency, charge and discharge cycle, etc., at this time, the capacitance detection unit 2220 sends a shipping The exit signal is sent to the first battery protection circuit 120, so that the first battery protection circuit 120 exits the shipping mode, the first battery protection circuit 120 controls the first switch unit 130 to turn on, and the first battery 110 is fed to the system through the first switch unit 130.
  • the circuit 140 supplies power, and the airflow sensor 133 is powered.
  • the first battery protection circuit 120, the system circuit 140, and the airflow sensor 133 are in the normal working mode.
  • the airflow sensor 133 When the user smokes, the airflow sensor 133 will detect the electrical signal changes caused by the smoking airflow, such as voltage signal changes, and the system circuit 140 will detect the electrical signal changes. The signal changes, and then controls the operation of the atomizer 132, and controls the power of the atomizer 132 according to the magnitude of the electrical signal, and controls the size of the smoke.
  • the first preset time after the user's lips leave the suction nozzle or when the electronic cigarette exits the shipping mode is for example 2-30 seconds, such as 2 seconds, 3 seconds, 5 seconds, 10 seconds, 15 seconds, 20 seconds, 25 seconds, 30 seconds, etc.
  • the first battery protection circuit 120 re-enters the shipping mode, and at this time the first switch unit 130 is turned off, so that the first battery 110 no longer supplies power to the system circuit 140, and the system The circuit 140, the airflow sensor 133, and the atomizer 132 are in a zero power consumption mode.
  • the capacitance detection circuit 2200 and the detection electrode 2210 are added in the electronic cigarette, the capacitance detection circuit 2200 and the detection electrode 2210 are not exposed on the surface of the electronic cigarette, especially the detection electrode 2210 is not exposed, and the capacitance detection method is added without changing the electronic cigarette
  • the shape is in line with the user's long-term perception of the appearance of e-cigarettes, and is easily accepted by users;
  • the electronic cigarette can enter or exit the shipping mode by detecting the change of capacitance through the capacitance detection circuit 2200. Therefore, when it is transported, stored for a long time or when the user does not use it, the electronic cigarette itself will automatically enter the shipping mode, and no additional equipment is required. Transporters, warehousers or users do additional operations, and do not need the host computer to cooperate with them. This is especially important for producers or transporters of large quantities of e-cigarettes. It will not increase the burden of additional operations, and does not require additional equipment. Cooperate to reduce costs.
  • the first switch unit 130 disconnects the discharge circuit between the first battery 110 and the system circuit 140, so that the first battery 110 stops supplying power to the system circuit 140, the system circuit 140, the airflow sensor 133, the atomizer 132, Components and circuits with large power consumption such as charging management circuits will not consume electric energy, which is beneficial to reduce the power consumption of e-cigarettes and increase the use time of e-cigarettes. Even if e-cigarettes are transported, stored or placed for a long time, e-cigarettes There is also relatively sufficient power, and the e-cigarette will not run out of power when the user experiences it in a shopping mall or when using it for the first time, which improves the user experience.
  • the capacitance detection circuit 2200 can quickly detect the capacitance change and quickly exit the shipping mode.
  • the first switch unit 130 It closes quickly in a short time. Generally speaking, there will be tens of milliseconds between the user's lips touching the nozzle of the electronic cigarette and the smoking action. In this embodiment, the time between the user's lips touching the nozzle and exiting the shipping mode is generally at the millisecond level.
  • the quick response can reach the microsecond level, the user can not feel that the first battery protection circuit 120 of the e-cigarette is in the shipping mode before, when the user smokes the e-cigarette, the airflow sensor 133 such as the microphone and MEMS has been blocked at this time.
  • the system circuit 140 detects the change of the electrical signal in the airflow sensor 133, and then controls the operation of the atomizer 132 and the power of the atomizer 132 to realize smoke emission. Therefore, this embodiment can not only reduce the energy consumption of electronic cigarettes, but also does not affect the user's long-term use habits, and does not need to increase the user's operations. Energy consumption of electronic cigarettes;
  • the electronic cigarette when the user’s lips touch the suction nozzle, the electronic cigarette exits the shipping mode, and at the first preset time after the user’s lips leave the suction nozzle or touch the suction nozzle, the electronic cigarette automatically enters the shipping mode, and the first switch unit 130 Disconnecting the discharge circuit between the first battery 110 and the system circuit 140 can greatly reduce the energy consumption of the electronic cigarette, that is, the electronic cigarette works in the normal working mode when the user smokes, and especially when the user does not smoke. During the gap time between two puffs, the electronic cigarette is also in the shipping mode. This treatment can minimize the power consumption of the electronic cigarette and greatly increase the use time of the electronic cigarette.
  • the first battery 110 can be used for a long time, and the user It does not require frequent charging, which improves the user's convenience;
  • the capacitance detection circuit 2200 is always powered by the first battery 110, and the power consumption of the capacitance detection circuit 2200 is at the nanoampere level, which is very low and will not reduce the standby time of the electronic cigarette.
  • the cost of circuit 2200 is very low, and it will not increase the relatively large cost of electronic cigarettes;
  • the electronic cigarette since the first switch unit 130 is automatically disconnected during transportation, storage or when the user is not using it, the electronic cigarette is in the shipping mode, so the system circuit 140 will not consume power, even if the airflow sensor 133 is due to The abnormal shape is changed (due to the airflow), the electronic cigarette will not work, and there will be no problem of false triggering of the electronic cigarette;
  • the first battery protection circuit 120 can cut off the connection between the first battery 110 and the system circuit 140 in time.
  • the electrical connection improves the safety performance of the electronic cigarette.
  • the system circuit 140, the airflow sensor 133 and other circuits are not powered, even if the electronic cigarette has an abnormality such as a short circuit, there will be no safety problem.
  • the following embodiments of this application provide an electronic component, including an electronic device and a storage device.
  • the electronic device can be stored in the storage device, the storage device can charge the electronic device, and the storage device can also send various A communication signal is sent to the electronic device, the electronic device is, for example, a wireless earphone, the wireless earphone is, for example, a TWS (True Wireless Stereo, True Wireless Stereo) earphone, and the storage device is, for example, a charging case.
  • the electronic component may only include an electronic device and not include a storage device.
  • the electronic device is, for example, a wireless earphone, a mobile phone, a tablet computer, and the like.
  • the electronic device is a wireless earphone and the storage device is a charging compartment as an example for illustration.
  • the electronic device includes a battery assembly 100 and a system circuit 150.
  • the system circuit 150 is, for example, a circuit composed of a microprocessor, a Bluetooth chip, an audio chip, etc., and the system circuit 150 is electrically connected to the battery assembly 100.
  • the battery pack 100 is used to power the system circuit 150 .
  • the battery assembly 100 includes a battery 110 and a battery protection circuit 120.
  • the battery protection circuit 120 is electrically connected to the positive and negative poles of the battery 110 respectively.
  • the battery 110 supplies power to the battery protection circuit 120.
  • the battery protection circuit 120 protects the battery. Protection is performed during overcharging or overdischarging.
  • the quantity of the battery 110 is one or more, and the battery 110 is preferably a rechargeable battery such as a lithium battery, a nickel-cadmium battery, or a nickel-hydrogen battery.
  • the capacity of the battery 110 is 10mAH-80mAH.
  • the battery 110 The capacity is 20mAH-40mAH.
  • a first resistor R1 and a first capacitor C1 are provided between the battery 110 and the battery protection circuit 120.
  • the settings of the first resistor R1 and the first capacitor C1 are used for filtering, and the resistance value of the first resistor R1 is generally 100 ⁇ - 1k ⁇ .
  • other circuits or electronic components may be provided between the battery 110 and the battery protection circuit 120, and the first resistor R1 and the first capacitor C1 may not be provided.
  • the battery protection circuit 120 includes a battery protection module 130.
  • the battery protection module 130 is used to protect the battery 110 and prevent the battery 110 from being damaged due to over-discharge voltage, over-discharge current, over-temperature, etc. Damage to the battery 110 itself is prevented.
  • the battery protection module 130 includes a power supply terminal VDD, a power ground terminal GND, a reference voltage generation unit 138, an over-discharge voltage protection unit 131, a discharge-over-current protection unit 134, a logic control unit 160, and an over-charge voltage protection unit. 132.
  • the charging overcurrent protection unit 133, the system terminal VM, the short circuit protection unit 135, the temperature protection unit 136, the reference frequency generating unit 137, etc., the power supply terminal VDD and the power ground terminal GND are electrically connected to the positive and negative poles of the battery 110, Therefore, the battery 110 can supply power to the battery protection module 130 .
  • the system end VM is used to monitor the current flowing through the system circuit 150 , of course, the system end VM can also have other functions.
  • a current detection terminal can also be provided, and the discharge overcurrent protection unit 134 is electrically connected to the current detection terminal. The current detection terminal is used to detect the current flowing in the system circuit.
  • the current detection terminal Used to be electrically connected to one end of the detection resistor the one end of the detection resistor is also electrically connected to the first end of the first switch unit, and the other end of the detection resistor is electrically connected to the positive pole of the battery or the negative pole of the battery.
  • the reference voltage generating unit 138 is provided for the over-discharge voltage protection unit 131, the discharge over-current protection unit 134, the over-charge voltage protection unit 132, the charging over-current protection unit 133, the short-circuit protection unit 135, the temperature protection unit 136, etc.
  • Different reference voltages are used to determine whether the battery 110 is in an over-discharge voltage state, a discharge over-current state, a short-circuit state, or the like.
  • the over-discharge voltage protection unit 131 is used to protect the battery 110 when it detects that the voltage of the battery 110 is lower than the reference voltage provided by the reference voltage generation unit 138 during the discharge process of the battery 110, such as controlling the battery 110 to only perform a minimum discharge etc. Generally, the power supply to the system circuit 150 is stopped to prevent the battery 110 from being permanently damaged due to over-discharging of the battery 110 .
  • the discharge overcurrent protection unit 134 is used to protect the battery 110 and the system circuit 150 when it detects that the discharge current is too large during the discharge process of the battery 110. Permanent damage or a safety issue.
  • the logic control unit 160 is used to control the working state and control logic of each unit of the battery protection module 130 , and control whether the battery 110 is discharged externally and whether the battery 110 is charged.
  • the overcharge voltage protection unit 132 is used to protect the battery 110 when it detects that the voltage of the battery 110 is higher than the reference voltage provided by the reference voltage generation unit 138 during the charging process of the battery 110, so as to prevent the battery 110 from continuing to charge after it is fully charged. , to prevent the battery 110 from being damaged.
  • the charging overcurrent protection unit 133 is used to protect the battery 110 when it detects that the charging current is too large during the charging process of the battery 110, such as stopping charging the battery 110 to prevent permanent damage to the battery 110 caused by the excessive charging current or a security issue arises.
  • the battery protection circuit 120 also includes a first switch unit 140, the first switch unit 140 is used to control whether the battery 110 supplies power to the system circuit 150, the connection mode between the first switch unit 140 and the battery protection module 130 is generally as follows
  • the first switch unit 140 is used to control whether the battery 110 supplies power to the system circuit 150
  • the connection mode between the first switch unit 140 and the battery protection module 130 is generally as follows
  • the battery protection module 130 includes a switch control terminal CO/DO, the switch control terminal is electrically connected to the logic control unit 160, the control terminal of the first switch unit 140 is electrically connected to the switch control terminal, the first switch unit The first end of 140 is electrically connected to the negative pole of the battery 110 (the first switch unit 140 is placed below), the negative pole of the battery 110 is grounded, the second end of the first switch unit 140 is electrically connected to the system terminal VM, the first switch unit 140 The second end is also electrically connected to the system circuit 150 , and the positive pole of the battery 110 is electrically connected to the system circuit 150 .
  • the logic control unit 160 controls the first switch unit 140 to turn on or off through the switch control terminal, so that when the logic control unit 160 controls the first switch unit 140 to turn on, the battery 110
  • the system circuit 150 can be powered via the first switch unit 140 , and the system circuit 150 is in a normal working mode; when the logic control unit 160 controls the first switch unit 140 to be turned off, the battery 110 stops supplying power to the system circuit 150 .
  • the battery protection module 130 is located on the first chip. At this time, the power supply terminal VDD is the power supply pin, the power ground terminal GND is the power ground pin, and the system terminal VM is the system pin.
  • the switch control The terminal CO/DO is a switch control pin.
  • the first switch unit 140 may be located on another chip, that is, the first switch unit 140 and the battery protection module 130 are located on different chips, and the first switch unit 140 may not be located on the chip.
  • the first switch unit 140 is located outside the battery protection module 130 (the first switch unit 140 is external).
  • the first switch unit 140 and the battery protection module 130 are located on the same chip (the first switch unit 140 is built in), at this time, the control terminal of the first switch unit 140 is electrically connected to the logic control unit 160, The first terminal of the first switch unit 140 is electrically connected to the power ground terminal GND, the power supply ground terminal GND is electrically connected to the negative pole of the battery 110 (the first switch unit 140 is placed down), and the second terminal of the first switch unit 140 is connected to the battery protection terminal.
  • the system terminal VM of the module 130 is electrically connected, the system terminal VM is electrically connected to the system circuit 150 , and the positive electrode of the battery 110 is electrically connected to the system circuit 150 .
  • the logic control unit 160 controls the first switch unit 140 to turn on or turn off. Moreover, at this time, the power supply terminal VDD is a power supply pin, the power ground terminal GND is a power ground pin, and the system terminal VM is a system pin.
  • the battery protection module 130 includes a switch control terminal CO/DO, the switch control terminal is electrically connected to the logic control unit 160, the control terminal of the first switch unit 140 is electrically connected to the switch control terminal, and the first switch unit 140
  • the first terminal of the first switch unit is electrically connected to the positive pole of the battery 110 (the first switch unit 140 is placed on top)
  • the second terminal of the first switch unit 140 is electrically connected to the system terminal VM
  • the second terminal of the first switch unit 140 is also connected to the system circuit 150 is electrically connected
  • the negative pole of the battery 110 is electrically connected to the system circuit 150 .
  • the logic control unit 160 controls the first switch unit 140 to turn on or turn off through the switch control terminal.
  • the battery protection module 130 is located on a first chip, and the first switch unit 140 may be located on another chip, that is, the first switch unit 140 and the battery protection module 130 are located on different chips, and the first switch unit 140 may be located on another chip.
  • the unit 140 may not be located on the chip, and the first switch unit 140 is located outside the battery protection module 130 (the first switch unit 140 is external).
  • the first switch unit 140 and the battery protection module 130 are located on the same chip (the first switch unit 140 is built in), at this time, the control terminal of the first switch unit 140 is electrically connected to the logic control unit 160, The first terminal of the first switch unit 140 is electrically connected to the power supply terminal VDD, the power supply terminal VDD is electrically connected to the positive pole of the battery 110 (the first switch unit 140 is placed on top), and the second terminal of the first switch unit 140 is connected to the system terminal.
  • the VM is electrically connected, the system terminal VM is electrically connected to the system circuit 150 , and the negative pole of the battery 110 is electrically connected to the system circuit 150 .
  • the logic control unit 160 controls the first switch unit 140 to turn on or turn off.
  • the first switch unit 140 includes a charge switch subunit 140c and a discharge switch subunit 140d (see FIG. 13 ), and the charge switch subunit 140c is connected in series with the discharge switch subunit 140d.
  • the charge switch subunit 140c and the discharge switch subunit 140d are MOS or other suitable field effect transistors, such as NMOS transistors or PMOS transistors, etc.
  • the charge switch subunit 140c and the discharge switch subunit 140d are respectively connected with the logic control unit 160 electrical connection, for example in Figure 11 and Figure 15,
  • the switch control terminal CO/DO of the battery protection module 130 includes the charge switch control terminal CO and the discharge switch control terminal DO, the charge switch control terminal CO and the control of the charge switch subunit 140c Terminals are electrically connected, the discharge switch control terminal DO is electrically connected to the control terminal of the discharge switch subunit 140d, the charge switch control terminal CO and the discharge switch control terminal DO are respectively electrically connected to the logic control unit 160, and the logic control unit 160 is implemented.
  • the control of unit 140c and discharge switch subunit 140d when the battery 110 needs to stop supplying power to the system circuit 150, the logic control unit 160 controls the discharge switch subunit 140d to remain off, at this time, the charge switch subunit 140c can be turned on, and the battery 110 It can be charged through a charging device or a charging bin, but the battery 110 will not discharge to the system circuit 150 .
  • the logic control unit 160 controls the discharge switch subunit 140d to remain off, at this time, the charge switch subunit 140c can be turned on, and the battery 110 It can be charged through a charging device or a charging bin, but the battery 110 will not discharge to the system circuit 150 .
  • the first switch unit 140 may also include a switch tube and a substrate control circuit, the switch tube is a MOS tube or other field effect tube, etc., the switch tube
  • the control end of the control terminal is electrically connected to the logic control unit
  • the substrate control circuit is electrically connected to the logic control unit 160
  • the substrate control circuit is used to realize the correct bias of the substrate of the switch tube, such as when the battery 110 is discharged and the battery 110 is charged.
  • the switch tubes are in different biases.
  • the logic control unit 160 controls the switch tubes to remain off, and controls the substrate bias of the switch tubes to the discharge cut-off state through the substrate control circuit.
  • the discharge cut-off state means that the battery 110 cannot be discharged to the system circuit 150 , the battery 110 can be charged by the charging device or the charging compartment, or the battery 110 cannot be charged either.
  • the present application is not limited thereto.
  • the first switch unit 140 may also be implemented in other forms, such as including only one switch tube, and the switch tube controls the discharge at this time.
  • the first switch unit 140 is used to control the battery 110 to supply power to the system circuit 150 , specifically, the battery 110 , the first switch unit 140 , and the system circuit 150 form a discharge circuit to supply power to the system circuit 150 .
  • the battery protection module 130 controls the first switch unit 140 to turn off, the discharge circuit between the system circuit 150 and the battery 110 is disconnected at this time, and the system circuit 150 is not powered by the battery 110; when the first switch unit 140 is turned on, this The time system circuit 150 is powered by the battery 110 via the first switch unit 140 .
  • the system circuit 150 can generally be equivalent to a resistance-capacitance network composed of the second capacitor C2 (load capacitance, including parasitic capacitance or non-parasitic capacitance) and the second resistor R2, and the second capacitor C2 is connected in parallel with the second resistor R2 .
  • the voltage on the second capacitor C2 needs to drop below the first threshold voltage, the first threshold voltage is less than or equal to 1V, such as 1V, 0.9V, 0.8V, 0.7V, 0.6V, 0.5 V, 0.4V, 0.3V, 0.2V, 0.1V, etc., if the voltage on the second capacitor C2 does not drop below the first threshold voltage and the first switch unit 140 is turned on again, the system circuit 150 will not be reset , data and programs will not be reloaded.
  • 1V such as 1V, 0.9V, 0.8V, 0.7V, 0.6V, 0.5 V, 0.4V, 0.3V, 0.2V, 0.1V, etc.
  • the capacitance of the second capacitor C2 is 5 ⁇ F-50 ⁇ F, such as 5 ⁇ F, 10 ⁇ F, 20 ⁇ F, 30 ⁇ F, 40 ⁇ F, 50 ⁇ F, etc., generally 10 ⁇ F.
  • the battery protection module 130 includes a reset terminal RST, and the reset terminal RST is used to receive a reset signal.
  • the reset signal may come from the system circuit 150 , It can also be from the charging compartment.
  • the logic control unit 160 controls the first switch unit 140 to turn off so that the battery 110 stops supplying power to the system circuit 150, and the first switch unit 140 turns off the first switch unit 140. After a preset period of time, the logic control unit 160 controls the first switch unit 140 to be turned on so as to restore the battery 110 to supply power to the system circuit 150 .
  • the reset terminal RST in addition to receiving the reset signal, may also receive other signals, such as shipping signals, that is, the reset terminal RST may also have other functions.
  • the battery protection module 130 may not include the reset terminal RST, and the battery protection module 130 receives the reset signal through the power supply terminal VDD or other terminals. How the battery protection module 130 receives the reset signal can refer to the patents CN112117800A, CN112117799A, and CN114401468A previously applied by the applicant and will not be repeated here. The following embodiments are described by taking the battery protection module 130 including the reset terminal RST as an example.
  • the wireless earphone further includes a plurality of first contacts, and the plurality of first contacts are used to realize a contact electrical connection with the charging compartment, so as to realize charging of the wireless earphone by the charging compartment, and contact with the charging compartment.
  • Wireless headsets for communication and more.
  • the battery protection circuit 520 is electrically connected to the first contact.
  • there are two first contacts namely the first power supply contact GCD1 and the first ground contact DCD1, wherein the first power supply contact GCD1 is connected to the battery via the charging management circuit.
  • the first power supply contact GCD1 is also electrically connected to the battery protection module 530 and the system circuit 150; the first ground contact DCD1 is electrically connected to the second end of the first switch unit 140, and the first ground contact DCD1 It is also electrically connected to the system terminal VM and the system circuit 150 . Therefore, when the wireless earphone is put back into the charging compartment, the charging compartment can charge the battery 110 through the first power supply contact GCD1 and the first ground contact DCD1, and, in this embodiment, the charging compartment can also use the first power supply contact
  • the contact GCD1 communicates with the system circuit 150 and the battery protection module 530 .
  • the charging compartment includes a plurality of second contacts and an internal circuit 180 of the charging compartment, the second contacts are electrically connected to the internal circuit 180 of the charging compartment, the number of the second contacts corresponds to the number of the first contacts, There are also two, and the second contact includes a second power supply contact GCD2 and a second ground contact DCD2.
  • the second power supply contact GCD2 is electrically connected to the first power supply contact GCD1
  • the second power supply contact GCD1 is electrically connected to the first power supply contact GCD1.
  • the second ground contact DCD2 is electrically connected to the first ground contact DCD1, so as to realize power transmission and communication between the charging compartment and the wireless earphone.
  • the second power supply contact GCD2 and the first power supply contact GCD1 are communication contacts and have a communication function.
  • the first power supply contact GCD1 and the second power supply contact GCD2 realize contact electrical connection
  • the first ground contact DCD1 and the second ground contact DCD2 realize contact electrical connection
  • the first contact includes a conductive contact piece, a conductive pin, a conductive post, a conductive tongue or a gold finger
  • the second contact includes a pogo pin, or conversely, the first contact can be realized. point, the second contact is better contact electrical connection.
  • this embodiment makes the following innovations: when the wireless headset is placed in the charging compartment, the charging compartment automatically outputs a reset signal to the wireless headset, and the reset signal can be sent to the wireless headset as soon as it is placed in the charging compartment, or it can be The reset signal is sent to the wireless earphone after putting it in for a while, and the reset signal is sent to the wireless earphone at the latest before the next time the user takes out the wireless earphone from the charging compartment, that is, every time the wireless earphone is put into the charging compartment, it will automatically trigger charging The bin outputs a reset signal to the wireless earphone.
  • the wireless earphone controls the first switch unit to turn off.
  • the first switch unit 140 is a reset switch unit. After the first switch unit 140 is turned off for a first preset time period, the wireless earphone controls the second A switch unit 140 is turned on to implement reset and restart of the system circuit 150 . That is, as long as the user puts the wireless headset into the charging compartment every time, the charging compartment will actively send a reset signal to the wireless headset to realize automatic reset and restart of the wireless headset.
  • the wireless headset When the wireless headset has a software failure when the headset is in the ear, or the wireless headset has a software failure after it falls from the ear, or the user misjudged that the wireless headset is out of power and cannot be used (actually a software failure), as long as the user puts the wireless headset into the charging compartment Afterwards, the wireless earphones will reset and restart, and the system circuit 150 will reload data and programs, thereby solving software problems.
  • the wireless headset can be used normally, and the user may not be aware of the software failure of the wireless headset, which greatly improves the user experience, reduces the probability of the user's perception of the software failure of the wireless headset, and improves the competitiveness of the product.
  • the charging compartment includes a detection unit 581 for detecting whether the wireless headset is placed in the charging compartment.
  • the detection unit 581 detects that the wireless headset is placed
  • the charging compartment outputs a reset signal to the wireless earphone, specifically, the reset signal is output to the battery protection module 530 through the second power supply contact GCD2, the first power supply contact GCD1, and the reset terminal RST.
  • the insertion detection unit 581 is electrically connected to the second power supply contact GCD2, and the insertion detection unit 581 periodically outputs an insertion detection signal to the battery protection module 530 or the system circuit 150, the battery protection module 530 or The system circuit 150 outputs a feedback signal to the insertion detection unit 581 after receiving the insertion detection signal, so that the insertion detection unit 581 can determine whether the wireless earphone is inserted into the charging compartment by judging whether the feedback signal is received, that is, according to the second power supply trigger The electric signal on the point judges whether the wireless earphone is put into the charging compartment.
  • the insertion detection unit 581 can also determine whether the wireless earphone is inserted into the charging compartment by detecting the voltage change of the second power supply contact GCD2.
  • the insertion detection unit 581 includes a movable body and a displacement detection subunit.
  • the movable body can move up and down elastically.
  • the wireless earphone presses the movable body downward from the initial position. Movement, when the detection sub-unit detects that the movable body moves downward by the threshold displacement, the displacement detection sub-unit judges that the wireless earphone is put into the charging compartment, and when the wireless earphone is taken out of the charging compartment, the active body moves upward to the initial position.
  • the movable body is preferably a pogo pin, that is, the second contact.
  • the insertion detection unit 581 includes a weight sensor. Due to the weight of the wireless earphone itself, it can be detected by the weight sensor whether the wireless earphone is placed in the charging compartment or not. When the weight sensor detects that the weight increases by the threshold weight when it is put into the charging compartment, the detection unit 581 judges that the wireless earphone is put into the charging compartment. By setting the threshold weight, the probability of false detection can be reduced.
  • the insertion detection unit 581 includes an infrared sensor, and a reflective element is provided on the wireless earphone.
  • the emitter of the infrared sensor emits infrared rays.
  • the reflective element will reflect back Infrared rays
  • the receiver of the infrared sensor can receive infrared rays.
  • the wireless headset is not placed in the charging compartment, the infrared rays will not be reflected back, so through the cooperation of the infrared sensor and the reflective element, it can be judged whether the wireless headset is placed in the detection unit 581. into the charging compartment.
  • the charging compartment includes a compartment body and a compartment cover, the compartment cover is hinged to the compartment body, and the compartment cover is placed on the compartment body to form an accommodating cavity, the wireless earphone can be accommodated in the accommodating cavity, and
  • the detection unit 581 includes a cover detection unit. When the cover is closed, the cover detection unit defaults that the wireless earphone has been put into the charging compartment, so that the charging compartment sends a reset signal to the wireless earphone.
  • the cover detection unit defaults that the wireless earphone has been put into the charging compartment, so that the charging compartment sends a reset signal to the wireless earphone.
  • the cover detection unit defaults that the wireless earphone has been put into the charging compartment, so that the charging compartment sends a reset signal to the wireless earphone.
  • the cover is closed, the user does not actually put the wireless earphones into the charging compartment. In this case, the wireless earphones will not receive the reset signal, and the normal use of the wireless earphones and the charging compartment will not be affected
  • the charging compartment includes a compartment body and a compartment cover, the compartment cover is hinged to the compartment body, and the compartment cover is placed on the compartment body to form an accommodating cavity, the wireless earphone can be accommodated in the accommodating cavity, and
  • the detection unit 581 includes a cover-opening detection unit.
  • the cover-opening detection unit assumes that the wireless earphone has been put into the charging compartment by default, and the user is about to take the wireless earphone out from the charging compartment, that is, the wireless earphone will not be released before taking it out.
  • Output a reset signal this setting can prevent the wireless headset from crashing and other software failures when the wireless headset is placed in the charging compartment for a long time.
  • the battery protection module 530 includes a reset terminal RST, and the reset terminal RST is electrically connected to the logic control unit 160 and the first power supply contact GCD1 respectively.
  • the logic control unit 160 controls the first switch unit 140 to turn off, so that the battery 110 stops supplying power to the system circuit 150, and the first switch unit 140 turns off the first preset
  • the logic control unit 160 controls the first switch unit 140 to be turned on, and the system circuit 150 reloads data and programs, so as to reset and restart the system circuit 150 .
  • the number of first contacts is not limited to two, and the number of first contacts can also be 3 (please refer to FIG. 20 ) or more than 3.
  • multiple first contacts One contact includes the first power supply contact GCD1, the first ground contact DCD1 and the first communication contact TCD1, etc.; the number of the second contacts corresponds to the number of the first contacts, and the plurality of second contacts include the second The power supply contact GCD2, the second ground contact DCD2, the second communication contact TCD2, etc., the first contact is electrically connected to the second contact correspondingly.
  • the first communication contact TCD1 is electrically connected to the battery protection module 530 and the system circuit 150 respectively, and the reset signal output by the charging compartment is output to the battery protection module 530 through the second communication contact TCD2 and the first communication contact TCD1, and , the first communication contact TCD1 is also electrically connected to the system circuit 150, so that the communication between the system circuit 150 and the charging compartment is also realized through the second communication contact TCD2 and the first communication contact TCD1.
  • the battery protection module 530 is not limited to setting a separate reset terminal RST, and the reset signal can also be output to the battery protection module 530 through the power supply terminal VDD.
  • the reset function is not limited to be set in the battery protection circuit 520.
  • the wireless headset can also add a separate reset chip and a reset switch unit, and the battery 110 supplies power through the reset switch unit and the first switch unit 140.
  • the control terminal of the reset switch unit is electrically connected to the reset chip, and the reset chip is electrically connected to the first power supply terminal or the first communication terminal.
  • the reset chip controls the reset switch unit to turn off, so that the battery 110 stops supplying power to the system circuit 150, and after the reset switch unit is turned off for the first preset time period, the wireless earphone controls the reset switch unit to turn on to realize the system circuit 150 reset and restart.
  • the wireless earphone may not be provided with the battery protection circuit 520 .
  • the inventors of the present application have found through in-depth research that it takes a relatively long time to realize the reset function through the existing battery protection circuit 520, resulting in a relatively long first preset time period, for example, the short one needs more than 3 seconds
  • the time is as long as 9 seconds or 10 seconds.
  • the present application provides a fifth embodiment - a seventh embodiment.
  • the inventors of the present application also found that since the first power supply contact GCD1 or the first communication contact TCD1 not only transmits common communication signals to the system circuit 150, but also transmits signals related to the battery protection module 530 to the battery protection Module 530, such as the reset signal of this embodiment, or the shipping signal, which may cause the battery protection circuit 520 to misjudge the common communication signal as the reset signal or the shipping signal, causing the battery protection module 530 to malfunction, such as the battery
  • the protection module 530 controls the first switch unit 140 to keep off, so that the wireless earphone stops working. When the user takes out the wireless earphone from the charging compartment to use, the wireless earphone cannot work normally, causing troubles to the user.
  • the present application provides an eighth embodiment - a ninth embodiment.
  • Fig. 11 is a circuit block diagram of the electronic component of the fifth embodiment of the present application, this embodiment is similar to the fourth embodiment, so the parts not described in this embodiment can refer to the fourth embodiment, this embodiment
  • the main difference from the fourth embodiment is how to quickly realize the reset and restart of the electronic device.
  • the battery protection module 130 includes a first discharge branch and a second discharge branch, wherein the first end of the first discharge branch and the first end of the second discharge branch are both electrically connected to the power supply terminal VDD, and the first discharge Both the second end of the branch and the second end of the second discharge branch are electrically connected to the system terminal VM, that is, the first discharge branch and the second discharge branch are connected in parallel.
  • the first discharge branch circuit includes a first discharge switch unit Ms1 and a first discharge resistor Rs1, one end of the first discharge switch unit Ms1 is electrically connected to the power supply terminal VDD, and the other end of the first discharge switch unit Ms1 It is electrically connected to one end of the first discharge resistor Rs1, the other end of the first discharge resistor Rs1 is electrically connected to the system terminal VM, the control terminal of the first discharge switch unit Ms1 is electrically connected to the logic control unit 160, and the logic control unit 160 can control the second A discharge switch unit Ms1 is turned on or off.
  • the positions of the first discharge switch unit Ms1 and the first discharge resistor Rs1 can also be exchanged.
  • the second discharge branch circuit includes a second discharge switch unit Ms2 and a second discharge resistor Rs2, one end of the second discharge switch unit Ms2 is electrically connected to the power supply terminal VDD, and the other end of the second discharge switch unit Ms2 It is electrically connected to one end of the second discharge resistor Rs2, the other end of the second discharge resistor Rs2 is electrically connected to the system terminal VM, the control terminal of the second discharge switch unit Ms2 is electrically connected to the logic control unit 160, and the logic control unit 160 can control the first 2. Turning on or turning off the discharge switch unit Ms2.
  • the positions of the second discharge switch unit Ms2 and the second discharge resistor Rs2 can also be exchanged.
  • the first switch unit 140 is placed downward and the first switch unit 140 is built-in.
  • the first discharge branch may not include the first discharge resistor.
  • the resistance of the first discharge branch ranges from 100 ohms to 20 kohms.
  • the resistance range of the first discharge resistor Rs1 is 100 ⁇ (kilohm)-20k ⁇ (kilohm), such as 20k ⁇ , 10k ⁇ , 7k ⁇ , 6k ⁇ , 5k ⁇ , 4k ⁇ , 3k ⁇ , 1k ⁇ , 500 ⁇ , 100 ⁇ , etc.
  • the second discharge resistor Rs1 is greater than or equal to 100k ⁇ , such as 100k ⁇ , 200k ⁇ , 300k ⁇ , 500k ⁇ , 700k ⁇ , 1M ⁇ (megohm), 2M ⁇ , 3M ⁇ , 4M ⁇ , 5M ⁇ , 6M ⁇ , 7M ⁇ , 8M ⁇ , 9M ⁇ , 10M ⁇ , etc.
  • the first discharge resistor Rs1 can be implemented by integrating resistors, or by using MOS transistors, triodes, and the like.
  • the first discharge switch unit Ms1 is a MOS transistor, preferably a PMOS transistor, of course it can also be an NMOS transistor, and of course the first discharge switch unit can also be a triode.
  • the second discharge switch unit Ms2 is a MOS transistor, preferably a PMOS transistor, and certainly can be an NMOS transistor, and of course the second discharge switch unit can also be a triode.
  • the resistance of the first discharge switch unit can be designed to reach 100 ohms or more when it is turned on.
  • the logic control unit 160 controls the first switch unit 140 to be turned off, that is, controls the battery 110 to stop supplying power to the system circuit 150, and the logic control unit 160 controls the first
  • the first discharge switch unit Ms1 and the second discharge switch unit Ms2 are turned on and turned on, so that the positive electrode of the second capacitor C2, the first resistor R1, the first discharge branch, the second discharge branch, the system terminal VM, and the second capacitor C2
  • the negative electrode forms a discharge circuit.
  • the resistance value of the first discharge resistor Rs1 of the first discharge branch is 5k ⁇
  • the resistance value of the second discharge resistor Rs2 of the second discharge branch is 300k ⁇
  • the parallel resistance of the first discharge branch and the second discharge branch It is about 4.9k ⁇ .
  • the resistance value of the first resistor R1 is 0.5k ⁇
  • the resistance after the first resistor R1 is connected in series with the parallel resistor is about 5.4k ⁇ .
  • Uc is the voltage to be discharged, such as the first threshold voltage
  • U0 is the voltage on the second capacitor when the first switch unit is turned off
  • e is a natural constant
  • t represents the discharge time
  • R is the resistance of the discharge circuit The resistance value is about 5.4k ⁇ here
  • C is the capacitance of the second capacitor.
  • the time required for the second capacitor C2 is about 0.076 seconds, which is 76 milliseconds, so that the second capacitor C2 only needs 76 milliseconds to reduce the voltage from 4V to 1V.
  • the system circuit 150 can be reset only after the first preset time period is greater than or equal to 76 milliseconds when the voltage drops below 1V, which is much lower than 3 seconds.
  • the first preset time period is less than or equal to 1s, such as 1s, 900ms, 800ms, 700ms, 600ms, 500ms, 400ms, 300ms, 200ms, 100ms, 90ms, 80ms, 76ms, etc.
  • the first preset time period is less than or equal to 500 ms and greater than the time required for the second capacitor C2 to discharge to the first threshold voltage.
  • dropping the voltage on the second capacitor C2 from 4V to 1V refers to pulling up the potential of the system terminal VM to 3V (relative to the negative pole of the battery 110), so that the voltage across the second capacitor C2 is 1V (the power supply terminal The voltage difference between VDD and system terminal VM).
  • the first power supply contact GCD1 and the first grounding contact DCD1 of the wireless earphone correspond to the second power supply contact GCD2 and the second grounding contact of the charging compartment.
  • DCD2 is electrically connected
  • the reset terminal is electrically connected to the first power supply contact GCD1.
  • the charging compartment sends a reset signal to the battery protection module 130 of the wireless earphone through the second power supply contact GCD2 and the first power supply contact GCD1, and the battery protection module 130 receives the reset signal.
  • the logic control unit 160 controls the first switch unit 140 to turn off and off, and the logic control unit 160 controls the first discharge switch unit Ms1 and the second discharge switch unit Ms2 to turn on and conduct, and the logic control unit 160 starts timing, when When the timing of the logic control unit 160 reaches the first preset time period, the logic control unit 160 controls the first switch unit 140 to be turned on and on, and the logic control unit 160 controls the first discharge switch unit Ms1 and the second discharge switch unit Ms2 to be turned off. . After that, the charging compartment can charge the wireless earphones, etc.
  • the charging compartment will output a reset signal to the battery protection module 130 of the wireless earphone, and the wireless earphone will quickly reset and restart, which is beneficial to the failure of the wireless earphone Or it will automatically return to normal when the machine crashes, and the user does not need to manually reset and restart, which greatly improves the user experience.
  • the wireless headset taken out by the user from the charging compartment is the wireless headset after the quick reset and restart, it is a wireless headset that can be used. There will be situations where the wireless earphones taken out by the user from the charging compartment cannot be used, which improves the user experience.
  • a reset button may also be provided on the charging case.
  • the charging case sends a reset signal to the wireless earphone.
  • the reset signal may not be output through the charging compartment, but may also be sent through the system circuit 150.
  • the wireless headset itself is provided with a reset button.
  • the system circuit 150 Send a reset signal to the battery protection module 130 .
  • the wireless earphone may also have a separate first communication contact TCD1, and the first communication contact TCD1 is electrically connected to the reset terminal.
  • the user puts the wireless headset into the charging compartment and takes it out for use.
  • This time interval generally takes 1s, and at least 500ms is required.
  • the voltage of the second capacitor C2 in this application drops to the first threshold voltage
  • the time required below is generally less than 1s, and the first preset time period can be set to be less than or equal to 1s, which is enough to reset the system circuit 150, so that it will not affect the normal use of the user.
  • the preferred first preset time period Set less than or equal to 500ms.
  • the battery protection module 130 may not set the second discharge branch, or even if the second discharge branch is set, the second discharge branch does not work when reset, for example, the second discharge branch
  • the discharge switch unit Ms2 is kept off and not turned on during the first preset time period, and the first discharge switch unit Ms1 is turned on and turned on during the first preset time period.
  • the inventor also found that when the logic control unit 160 controls the first switch unit 140 to be turned off, and the logic control unit 160 controls the first discharge switch unit Ms1 and the second discharge switch unit Ms2 to be turned on, at this time the second The voltage on the capacitor C2 is assumed to be 4V. At this time, even if the battery 110 no longer supplies power to the system circuit 150, the second capacitor C2 can still supply power to the system circuit 150.
  • the second resistor R2 is very small compared to the first discharge resistor Rs1 , the second capacitor C2 is quickly discharged to the second threshold voltage through the second resistor R2, the second threshold voltage is, for example, 2.5V-3.0V, for example, the second threshold voltage is 2.5V, 2.6V, 2.7V, 2.8V, 2.9 V, 3V, etc.
  • 2.7V is taken as an example for illustration.
  • the main discharge circuit is the positive pole of the second capacitor C2, the second resistor R2, and the negative pole of the second capacitor C2.
  • the fast is generally at the level of several milliseconds or microseconds, which is negligible compared with the discharge time of the subsequent discharge branch.
  • the resistance value of the second resistor R2 When discharging to the second threshold voltage, the resistance value of the second resistor R2 will be far greater than the resistance value of the first discharge resistor Rs1. Generally, the resistance value of the second resistor R2 is more than several hundred M ⁇ .
  • the second capacitor C2 is mainly discharged through the battery protection module 130. After calculation, the time required for the second capacitor C2 to drop from the second threshold voltage to the threshold voltage is about 54ms (assuming that the second threshold voltage is 2.7V and the first threshold voltage is 1V as an example), so that the total discharge time will not exceed 60ms, so the minimum of the first preset time period can be further reduced to 60ms.
  • the battery protection module 130 controls the first discharge switch unit Ms1 to turn on and on only after receiving the reset signal, and turns off the first discharge switch unit Ms1 at other times.
  • the second discharge branch is an existing branch in the existing battery protection module 130 , and details will not be repeated here.
  • the reason why the second discharge branch is reserved is mainly for common use with the old battery protection module 130 , only the first discharge branch needs to be added to the old battery protection module 130 , which is beneficial to reduce costs.
  • the logic control unit 160 also includes an over-discharge voltage control unit 161, a discharge over-current control unit 164, a reset detection control unit 169, a first logic gate 162, a second logic gate gate 165 and inverter 163 .
  • the over-discharge voltage control unit 161 is electrically connected to the over-discharge voltage protection unit 131
  • the discharge over-current control unit 164 is electrically connected to the discharge over-current protection unit 134
  • the discharge over-current protection unit 134 is electrically connected to the system terminal VM
  • the unit 169 is electrically connected to the reset terminal RST
  • the first logic gate 162 is electrically connected to the over-discharge voltage control unit 161, the discharge over-current control unit 164, and the reset detection control unit 169 respectively
  • the output terminal of the first logic gate 162 is connected to the inverter
  • the input terminal of 163 is electrically connected
  • the output terminal of inverter 163 is electrically connected with the control terminal of the discharge switch subunit 140d of the first switch unit 140 or with the control terminal of the switch tube, and the number of inverter 163 can be one or more
  • the second logic gate 165 is electrically connected with the over-discharge voltage control unit 161 and the reset detection control
  • the discharge switch subunit 140d or the switch tube is an NMOS tube
  • the first logic gate 162 is a NAND gate
  • the second logic gate 165 is an AND gate
  • the first discharge switch unit Ms1 and the second discharge switch unit Ms2 All are PMOS tubes.
  • the over-discharge voltage control unit 161, the discharge and over-current control unit 164, and the reset detection control unit 169 all output the first signal to the first logic gate 162, and then the inverter 163 outputs a conduction signal to the first switch unit 140, the first switch unit 140 is turned on, and the battery 110 can normally supply power to the system circuit 150; moreover, the over-discharge voltage control unit 161 and the reset detection control unit 169 both output the first signal to the second logic gate 165, and the second logic gate 165
  • the gate 165 outputs a shut-off signal to the first discharge switch unit Ms1 and the second discharge switch unit Ms2, at this time the first discharge switch unit Ms1 and the second discharge switch unit Ms2 are turned off; when the reset detection control unit 169 receives the reset signal Afterwards, the reset detection control unit 169 outputs the second signal to the first logic gate 162 and the second logic gate 165 respectively, and the inverter 163 outputs a shutdown signal to the first switch unit 140, the first
  • the reset detection control unit 169 also includes a timer. When the reset detection control unit 169 outputs the second signal, the timer starts counting. When the timer counts to the first preset time period, the reset detection control unit 169 outputs the first signal. signal, at this moment, the first logic gate 162 controls the discharge switch to be turned on, and the system circuit 150 realizes reset and restart.
  • the second logic gate 165 may not be included. At this time, the overdischarge voltage control unit 161 is electrically connected to the control terminal of the second discharge switch unit Ms2, and the reset detection control unit 169 is not connected to the second discharge switch unit Ms2.
  • the first signal is a high-level signal
  • the second signal is, for example, a low-level signal.
  • the present application is not limited thereto. In other embodiments of the present application, the first signal may also be a low-level signal, and the second signal may be a high-level signal.
  • the inventors of the present application also found that after the reset detection control unit 169 receives the reset signal, the first discharge switch unit Ms1 and the second discharge switch unit Ms2 will be turned on and conducted, which will cause the potential of the system terminal VM to be pulled up, for example, As high as 3V, the discharge overcurrent protection unit 134 will play a protective role during the rising of the VM potential at the system end, that is, the discharge overcurrent protection function will work, and an overcurrent protection signal will be output to the discharge overcurrent control unit 164.
  • the discharge overcurrent protection unit 134 will lock and output an overcurrent signal to the first logic gate 162, and then the inverter 163 will output a shutdown signal to the first switch unit 140, and the first switch unit 140 will continue to be turned off.
  • the reset detection control unit 169 outputs the first signal, however, due to the action of the discharge overcurrent control unit 164, the first switch unit 140 is still kept off and will not be turned on, resulting in The system circuit 150 cannot be reset and restarted.
  • the reset detection control unit 169 is also electrically connected to the enable terminal of the discharge overcurrent control unit 164, when the reset detection control unit 169 outputs the second signal to the first logic gate 162 and the second logic gate 162 respectively
  • the reset detection control unit 169 also outputs an enable signal to the discharge overcurrent control unit 164
  • the discharge overcurrent control unit 164 stops the discharge overcurrent protection function of the discharge overcurrent control unit 164 after receiving the enable signal work, even if thereafter the discharge overcurrent protection unit 134 outputs an overcurrent protection signal to the discharge overcurrent control unit 164, the discharge overcurrent control unit 164 will not work, that is, it will not control the first switch unit 140 to continue to turn off, so that the second A switch unit 140 will not be locked to be turned off.
  • the reset detection control unit 169 continuously outputs an enable signal to the discharge overcurrent control unit 164 during the first preset time period.
  • the enable signal is the same as the second signal, and is a low-level signal that lasts for a first preset time period.
  • the present application is not limited thereto.
  • the enable signal may also be a high-level signal that lasts for a first preset time period, and those skilled in the art may set it according to actual needs.
  • the enable signal is not limited to be output to the discharge overcurrent control unit 164, and the enable signal can also be output to the enable terminal of the discharge overcurrent protection unit 134, that is, the reset detection control unit 169 It is electrically connected with the enable end of the discharge overcurrent protection unit 134, so that after the discharge overcurrent protection unit 134 receives the enable signal, the discharge overcurrent protection unit 134 will not work, even if the potential of the system terminal VM rises to 3V, the discharge The overcurrent protection unit 134 will not output an overcurrent protection signal to the discharge overcurrent control unit 164, and the discharge overcurrent control unit 164 will not control and lock the first switching unit 140 to keep off, that is, the discharge overcurrent protection function stops working.
  • the reset detection control unit 169 when the timer counts down to the first preset time period, the reset detection control unit 169 also outputs a disabling signal to the discharge overcurrent control unit 164 , and then the discharge overcurrent control unit 164 resumes working.
  • the de-enabling signal is the same as the first signal.
  • the enable signal when the enable signal is output to the discharge overcurrent protection unit 134 , the deactivation signal is also output to the discharge overcurrent protection unit 134 .
  • the de-enabling signal and the first signal are sent at the same time. But the present application is not limited thereto.
  • the timing unit counts a delay time and then outputs the release enabling signal to the discharge overcurrent control unit 164 or the discharge overcurrent control unit 164
  • the overcurrent protection unit 134 the delay time is used to make the first switch unit 140 conduction, so that the voltage of the system terminal VM is pulled down to the voltage of the negative pole of the battery 110 or the time required for pulling up to the voltage of the positive pole of the battery 110, preventing the system from Pulling the terminal VM below the discharge over-current reference voltage or pulling it up to above the discharge over-current reference voltage is relatively slow, causing the discharge over-current protection to be triggered again, causing the first switch unit 140 to be turned off again.
  • the electronic device may not be used together with the storage device, and in this case the electronic device may be used alone.
  • Fig. 15 is a circuit block diagram of the electronic component of the sixth embodiment of the present application, this embodiment is similar to the fifth embodiment, so the parts not described in this embodiment can refer to the fifth embodiment, this embodiment
  • the main difference from the fifth embodiment is that the first switch unit 340 is placed on top.
  • the battery protection module 330 includes a first discharge branch and a second discharge branch, wherein the first end of the first discharge branch and the first end of the second discharge branch are both electrically connected to the power ground terminal GND, and the first discharge Both the second end of the branch and the second end of the second discharge branch are electrically connected to the system terminal VM, that is, the first discharge branch and the second discharge branch are connected in parallel.
  • the first discharge branch circuit includes a first discharge switch unit Ms1 and a first discharge resistor Rs1, one end of the first discharge switch unit Ms1 is electrically connected to the power ground terminal GND, and the other end of the first discharge switch unit Ms1 It is electrically connected to one end of the first discharge resistor Rs1, the other end of the first discharge resistor Rs1 is electrically connected to the system terminal VM, the control terminal of the first discharge switch unit Ms1 is electrically connected to the logic control unit 160, and the logic control unit 160 can control the second A discharge switch unit Ms1 is turned on or off.
  • the positions of the first discharge switch unit Ms1 and the first discharge resistor Rs1 can also be exchanged.
  • the second discharge branch circuit includes a second discharge switch unit Ms2 and a second discharge resistor Rs2, one end of the second discharge switch unit Ms2 is electrically connected to the power ground terminal GND, and the other end of the second discharge switch unit Ms2 It is electrically connected to one end of the second discharge resistor Rs2, the other end of the second discharge resistor Rs2 is electrically connected to the system terminal VM, the control terminal of the second discharge switch unit Ms2 is electrically connected to the logic control unit 160, and the logic control unit 160 can control the first 2. Turning on or turning off the discharge switch unit Ms2.
  • the positions of the second discharge switch unit Ms2 and the second discharge resistor Rs2 can also be exchanged.
  • the first switch unit 340 is placed on top and the first switch unit 340 is built in.
  • the resistance range of the first discharge resistor Rs1 is 100 ⁇ -20k ⁇ (k ⁇ ), preferably 1k ⁇ -10k ⁇ , so that the discharge current of the second capacitor C2 will not be too large when it is discharged through the first discharge resistor Rs1 , the battery protection module 330 will not generate too much heat, which is beneficial to protect the battery protection module 330; the resistance range of the second discharge resistor Rs2 is greater than or equal to 100 k ⁇ .
  • the first discharge switch unit Ms1 is a MOS transistor, preferably an NMOS transistor, and of course it can also be a PMOS transistor.
  • the second discharge switch unit Ms2 is a MOS transistor, preferably an NMOS transistor, and of course it can also be a PMOS transistor.
  • dropping the voltage on the second capacitor C2 from 4V to 1V refers to pulling down the potential of the system terminal VM to 1V (relative to the negative pole of the battery 110), so that the voltage across the second capacitor C2 is 1V (system terminal VM The voltage difference from the ground terminal GND of the power supply).
  • the logic control unit 160 controls the first switch unit 340 to be turned off, that is, controls the battery 110 to stop supplying power to the system circuit 150, and the logic control unit 160 controls the first A discharge switch unit Ms1 is turned on and conducted, and at this moment, the second discharge switch unit Ms2 is not conducted.
  • the logic control unit 160 may control both the first discharge switch unit Ms1 and the second discharge switch unit Ms2 to be turned on. When the first discharge switch unit Ms1 is turned on, the second capacitor C2 is discharged. With the discharge of the second capacitor C2, the voltage of the system terminal VM will drop.
  • the system circuit 150 can be reset and restarted when the first switch unit 340 is turned on.
  • the logic control unit 160 controls the first switch unit 340 to turn off and cuts off the first preset time period
  • the logic control unit 160 controls the first switch unit 340 to turn on again, and controls the first discharge switch unit Ms1 to turn off. due.
  • the first preset time period is less than or equal to 1 s, preferably less than or equal to 500 ms.
  • the logic control unit 160 also includes an over-discharge voltage control unit 161, a discharge over-current control unit 164, a reset detection control unit 169, a first logic gate 162 and an inverter. 163.
  • the over-discharge voltage control unit 161 is electrically connected to the over-discharge voltage protection unit 131
  • the discharge over-current control unit 164 is electrically connected to the discharge over-current protection unit 134
  • the discharge over-current protection unit 134 is electrically connected to the system terminal VM
  • the unit 169 is electrically connected to the reset terminal RST
  • the first logic gate 162 is electrically connected to the over-discharge voltage control unit 161, the discharge over-current control unit 164, and the reset detection control unit 169 respectively
  • the output terminal of the first logic gate 162 is connected to the inverter
  • the input terminal of 163 is electrically connected
  • the output terminal of inverter 163 is electrically connected with the control terminal of the discharge switch subunit 140d of the first switch unit 340 or with the control terminal of the switch tube
  • the output terminal of the overdischarge voltage control unit 161 is connected with the first switch unit 340.
  • the control terminals of the second discharge switch unit Ms2 are electrically connected, and the reset detection control unit 169 is electrically connected with the control terminal of the first discharge switch unit Ms1 .
  • the reset detection control unit 169 is also electrically connected to the enable terminal of the discharge overcurrent control unit 164, and the reset detection control unit 169 outputs an enable signal or cancels the enable signal to enable the discharge overcurrent control unit 164. terminal, so as to control whether the discharge overcurrent protection function works normally.
  • the reset detection control unit 169 is electrically connected to the enable terminal of the discharge overcurrent protection unit 134, and the reset detection control unit 169 outputs an enable signal or a release enable signal to the discharge overcurrent protection unit 134. enable terminal.
  • FIG. 19 is a block diagram of the battery protection circuit 120 of the seventh embodiment of the present application.
  • This embodiment is similar to the fifth embodiment and the sixth embodiment, so the parts not described in this embodiment can refer to the fifth Embodiment 6, the main difference between this embodiment and the fifth embodiment is that the second discharge switch unit Ms2 is not provided, which is beneficial to save costs.
  • the battery protection module 130 includes a first discharge branch circuit, wherein the first end of the first discharge branch circuit is electrically connected to the power supply terminal VDD or the power supply ground terminal GND, and the first discharge branch circuit The second end of the circuit is electrically connected to the system end VM.
  • the first discharge branch circuit includes a first discharge switch unit Ms1, a first discharge resistor Rs1, and a second discharge resistor Rs2, wherein one end of the first discharge switch unit Ms1 is connected to the power supply terminal VDD or the power ground terminal GND is electrically connected, and the other end of the first discharge switch unit Ms1 is electrically connected to one end of the first discharge resistor Rs1 and one end of the second discharge resistor Rs2, and the other end of the first discharge resistor Rs1 is electrically connected to the other end of the second discharge resistor Rs2.
  • the control terminal of the first discharge switch unit Ms1 is electrically connected to the logic control unit 160, and the logic control unit 160 can control the first discharge switch Turning on or off of the unit Ms1 is specifically electrically connected to the output terminal of the second logic unit.
  • the positions of the first discharge switch unit Ms1 , the parallel circuit of the first discharge resistor Rs1 and the second discharge resistor Rs2 can also be exchanged.
  • the resistance range of the first discharge resistor Rs1 is 1k ⁇ -10k ⁇ , preferably 3k ⁇ -7k ⁇ , so that the discharge current of the second capacitor C2 through the first discharge resistor Rs1 will not be too large, and the battery protection module 130 does not generate too much heat, which is beneficial to protect the battery protection module 130; the resistance range of the second discharge resistor Rs2 is greater than or equal to 100 k ⁇ .
  • the first discharge switch unit Ms1 is a MOS transistor, preferably a PMOS transistor, and can also be an NMOS transistor.
  • the second discharge resistor Rs2 may not be provided.
  • Fig. 20 is a block diagram of the electronic components of the eighth embodiment of the present application, this embodiment is similar to the fourth embodiment - the seventh embodiment, so the parts not described in this embodiment can refer to the fourth embodiment - The seventh embodiment, the main difference between this embodiment and the previous embodiments is to prevent the battery protection module 630 from misjudging the signal.
  • the first switch unit 140 is positioned downward and external.
  • the present application is not limited thereto, and the first switch unit 140 can also be placed down and built in.
  • the number of the first contacts is three, and of course there may be more.
  • the three first contacts are respectively the first power supply contact GCD1, the first ground contact DCD1 and the first communication contact.
  • the number of the second contacts corresponds to the number of the first contacts, which is also three, and the plurality of second contacts include the second power supply contact GCD2, the second grounding contact DCD2 and the second communication contact TCD2 , when the wireless headset is put into the charging compartment, the first power supply contact GCD1 is electrically connected to the second power supply contact GCD2, the first ground contact DCD1 is electrically connected to the second ground contact DCD2, and the first communication contact TCD1 is electrically connected to the second communication contact TCD2 in a contacting manner.
  • the first power supply contact GCD1 and the second power supply contact GCD2 can be used to charge the battery 110, the first power supply contact GCD1 is electrically connected to the charging management circuit 170, and the charging management circuit is also connected to the positive pole of the battery 110 Electrically connected, the first ground contact DCD1 is electrically connected to the system terminal VM and the second end of the first switch unit 140, the system circuit 150 is electrically connected to the second end of the first switch unit 140, the first communication contact TCD1, the second The two communication contacts TCD2 are used for communication between the charging compartment, the system circuit 150 and the battery protection module 630 . In this embodiment, the first communication contact TCD1 is electrically connected to the battery protection module 630 and the system circuit 150 respectively.
  • the number of the first contact and the second contact may both be two.
  • the first power supply contact GCD1 and the second power supply contact GCD2 are both It can be used for charging the battery 110 and can also be used for communication.
  • the first power supply contact GCD1 is also electrically connected to the battery protection module 630 and the system circuit 150 respectively.
  • the communication between the charging compartment and the system circuit 150 is frequent, and the communication between the charging compartment and the battery protection module 630 is infrequent.
  • the charging compartment can send shipping signals, reset signals, etc. to the battery protection module 630.
  • the charging compartment sends reset signals.
  • the signal to the battery protection module 630 is described as an example.
  • the communication signal output from the charging compartment to the system circuit 150 is the first pulse signal
  • the communication signal output from the charging compartment to the battery protection circuit 120 is the second pulse signal, that is, the reset signal is composed of the second pulse signal.
  • the voltage corresponding to the logic high level of the first pulse signal is smaller than the voltage corresponding to the logic high level of the second pulse signal, for example, the voltage corresponding to the logic high level of the first pulse signal is 2V-3.5V, for example, 2V, 2.2V, 2.4V, 2.5V, 2.6V, 2.8V, 4V, 3.2V, 3.4V, 3.5V, etc., 2.5V is taken as an example below, the voltage corresponding to the logic high level of the second pulse signal is 4V -6V is, for example, 4V, 4.5V, 5V, 5.5V, 6V, etc., and 5V is taken as an example for description below.
  • the battery protection circuit 120 recognizes that the first pulse signal is a continuous low-level signal, that is, regardless of the logic high of the first pulse signal level or a logic low level, the battery protection module 630 recognizes it as a logic low level. For example, the battery protection module 630 recognizes a voltage below 3.5V as a logic low level, and the battery protection module 630 recognizes a voltage above 4V as a logic low level. The battery protection module 630 considers a logic high level signal and a continuous low level signal as an invalid signal, and will not take any action.
  • the battery protection module 630 includes a communication terminal, where the communication terminal is a reset terminal. RST, used to receive the reset signal.
  • the communication terminal may also be a shipping terminal for receiving a shipping signal, and when receiving a shipping signal, the logic control unit 660 controls the first switch unit 140 to keep turning off.
  • the wireless earphone further includes a first voltage dividing resistor Rt1, the communication terminal is electrically connected to one end of the first voltage dividing resistor Rt1, and the other end of the first voltage dividing resistor Rt1 is electrically connected to the first communication contact TCD1,
  • the first communication contact TCD1 is directly electrically connected to the system circuit 150 , that is, the connection between the first communication contact TCD1 and the system circuit 150 does not pass through the first voltage dividing resistor Rt1 .
  • the logic control unit 660 includes a second voltage dividing resistor Rt2 and a signal sampling unit 671 .
  • the communication terminal is also electrically connected to one end of the second voltage dividing resistor Rt2, the other end of the second voltage dividing resistor Rt2 is electrically connected to the system terminal VM, the signal sampling unit 671 is electrically connected to the communication terminal, and the signal sampling unit 671 judges that the voltage of the communication terminal is greater than
  • the third threshold voltage is a logic high level, and the third threshold voltage is a logic low level, for example, the range of the third threshold voltage is 0.5V-1.8V, such as 0.5V, 0.8V, 1V, 1.2V, 1.4V , 1.5V, 1.6V, 1.8V, etc.
  • the third threshold voltage is 1.2V as an example for illustration.
  • the voltage corresponding to the logic high level of the first pulse signal is divided by the first voltage dividing resistor Rt1 and the second voltage dividing resistor Rt2, and the voltage at the communication terminal is less than the third threshold voltage, and the logic of the second pulse signal
  • the voltage at the communication terminal is greater than the third threshold voltage, that is, when the first communication contact TCD1 receives the first pulse signal, the second Assuming that the voltage corresponding to the logic high level of a pulse signal is U1, the voltage at the communication terminal is approximately: U1*Rt2/(Rt1+Rt2), where Rt1 represents the resistance value of the first voltage dividing resistor Rt1, and Rt2 represents the first The resistance of the two voltage divider resistors Rt2, at this time, the voltage of the communication terminal will be less than the third threshold voltage, for
  • the signal sampling unit 671 of the battery protection module 630 cannot identify the first pulse signal, but can identify the second pulse signal.
  • the battery protection module 630 will not malfunction.
  • the signal sent by the charging compartment to the battery protection module 630 is relatively small, the possibility of the system circuit 150 being falsely triggered is low, and the signal sent by the charging compartment to the battery protection module 630 also includes a reset signal and a shipping signal. Even if the system circuit 150 malfunctions when receiving these signals, the battery protection module 630 will control the first switch unit 140 to turn off, and the system circuit 150 will be powered off, so the impact on the system circuit 150 is relatively small.
  • the resistance values of the first voltage dividing resistor Rt1 and the second voltage dividing resistor Rt2 are at the megohm level, for example greater than or equal to 1M ⁇ (megohm), such as 1M ⁇ , 5M ⁇ , 10M ⁇ , 20M ⁇ , 30M ⁇ , 50M ⁇ etc. In this way, the power consumption consumed by the first voltage dividing resistor Rt1 and the second voltage dividing resistor Rt2 is relatively low.
  • the ratio range of the first voltage dividing resistor Rt1 to the second voltage dividing resistor Rt2 is 1:1-5:1, for example, 1:1, 2:1, 3:1, 4:1, 5 :1 etc.
  • the logic control unit 660 includes a first voltage dividing resistor Rt1 and a second voltage dividing resistor Rt2, that is, the first voltage dividing resistor Rt1 is built into the battery protection module 630 , so that there is no need to set an additional resistor between the communication terminal of the battery protection module 630 and the first communication contact TCD1, which is beneficial to reduce peripheral components.
  • the signal sampling unit 671 is electrically connected to the junction of the first voltage dividing resistor Rt1 and the second voltage dividing resistor Rt2.
  • the system circuit 150 and the battery protection module 630 have the same criteria for judging whether a voltage belongs to a logic high level or a logic low level, that is, they are all judged by the third threshold voltage, which is conducive to unification
  • the design standard reduces the complexity of the circuit design. Therefore, in this embodiment, it is necessary to design the first voltage dividing resistor Rt1 and the second voltage dividing resistor Rt2 connected in series to divide the voltage. But the present application is not limited thereto.
  • the battery protection module 630 judges whether the received voltage is a logic high level or a logic low level through the third threshold voltage, and the system circuit 150 judges whether the received voltage is a logic high level or a logic low level through the fourth threshold voltage.
  • the voltage of the voltage is a logic high level or a logic low level, for example, is judged by a voltage comparator, wherein the third threshold voltage is greater than the fourth threshold voltage, for example, the range of the third threshold voltage is greater than the logic high of the first pulse signal
  • the range of the fourth threshold voltage is less than the voltage lower limit corresponding to the logic high level of the first pulse signal, for example, the range of the fourth threshold voltage is 0.5V-1.8V, such as 1.2V Therefore, by setting in this way, the setting of the first voltage dividing resistor Rt1 is not required, and the voltage received by the signal sampling unit 671 is less than the third threshold voltage regardless of whether the first pulse signal is at a logic
  • the reference grounds of the system circuit 150 and the battery protection module 630 are approximately the same, both being the negative pole of the battery 110 or the power ground terminal GND (the voltage on the first switch unit 140 is very small when it is turned on, and can negligible), when the first switch unit 140 is turned on, the voltage at the negative terminal of the battery 110 is approximately equal to the voltage at the second terminal of the first switch unit 140 .
  • Figure 23 is a block diagram of the battery protection circuit 120 of the ninth embodiment of the present application, this embodiment is similar to the eighth embodiment, so the parts not described in this embodiment can refer to the eighth embodiment, this embodiment
  • the main difference between this example and the eighth embodiment is that the first switch unit 140 is placed on top.
  • the first switch unit 140 is placed on top and outside.
  • the present application is not limited thereto, and the first switch unit 140 can also be placed on top and built in.
  • the number of the first contacts is two, and of course there may be more.
  • the two first contacts are respectively the first power supply contact GCD1 and the first ground contact DCD1; the second contact The number corresponds to the number of the first contacts, which is also two.
  • the multiple second contacts include the second power supply contact GCD2 and the second ground contact DCD2.
  • the first power supply contact GCD1 When the wireless earphone is placed in the charging compartment, the first power supply contact GCD1 is electrically connected to the second power supply contact GCD2 in a contacting manner, and the first grounding contact DCD1 is electrically connected to the second grounding contact DCD2 in a contacting manner.
  • the first power supply contact GCD1 and the second power supply contact GCD2 can be used to charge the battery 110 and also be used for the communication between the charging compartment and the system circuit 150 and the battery protection module 130, that is, the first power supply contact
  • the point GCD1 and the second power supply contact GCD2 also have the function of communication contacts, that is, the first power supply contact GCD1 has the function of the first communication contact, and the second power supply contact GCD2 has the function of the second communication contact.
  • the first power supply contact GCD1 is electrically connected to the battery protection module 130, the system circuit 150, and the charging management circuit respectively
  • the first ground contact DCD1 is electrically connected to the power ground terminal GND of the battery protection module 130
  • the system circuit 150 is also electrically connected to the power ground terminal GND.
  • the number of the first contact and the second contact may both be three, and at this time, the first communication contact TCD1 and the second communication contact The point TCD2, the first communication contact TCD1 and the second communication contact TCD2 are used for communication.
  • the battery protection module 130 includes a communication terminal, where the communication terminal is a reset terminal RST for receiving a reset signal.
  • the communication terminal may also be a shipping terminal, and the communication terminal is electrically connected to the first power supply contact GCD1 .
  • the logic control unit 760 includes a first voltage-dividing resistor Rt1, a second voltage-dividing resistor Rt2, and a signal sampling unit 771, wherein one end of the first voltage-dividing resistor Rt1 is electrically connected to the communication terminal, and the first voltage-dividing resistor Rt2 The other end of the resistor Rt1 is electrically connected to one end of the second voltage dividing resistor Rt2, the other end of the second voltage dividing resistor Rt2 is electrically connected to the power ground terminal GND, and the signal sampling unit 771 is connected to the first voltage dividing resistor Rt1 and the second voltage dividing resistor Rt1.
  • the connection of the resistor Rt2 is electrically connected, and the signal sampling unit 771 judges that the voltage at the connection is greater than the third threshold voltage, which is a logic high level, and is less than the third threshold voltage, which is a logic low level.
  • the range of the third threshold voltage is 0.5V- 1.8V.
  • the third threshold voltage is 1.2V as an example for illustration.
  • the voltage corresponding to the logic high level of the first pulse signal is divided by the first voltage dividing resistor Rt1 and the second voltage dividing resistor Rt2, and the voltage at the connection is less than the third threshold voltage, and the voltage of the second pulse signal
  • the voltage corresponding to the logic high level is divided by the first voltage dividing resistor Rt1 and the second voltage dividing resistor Rt2, and the voltage at the connection is greater than the third threshold voltage, that is, when the first power supply contact GCD1 receives the first pulse signal , the signal sampling unit 771 will judge the entire first pulse signal as a logic low level signal, which is an invalid signal; when the first power supply contact GCD1 receives the second pulse signal, the signal sampling unit 771 will judge the logic of the second pulse signal
  • the voltage corresponding to the high level is determined as a logic high level, and the voltage corresponding to the logic low level of the second pulse signal is determined as a logic low level, and the signal sampling unit 771 can identify the pulse signal.
  • the signal sampling unit 771 of the battery protection module 130 cannot identify the first pulse signal, but can identify the second pulse signal.
  • the first power supply contact GCD1 receives the first pulse signal for a long time, because the signal sampling unit 771 cannot identify the signal, Therefore, the battery protection module 130 will not malfunction.
  • the first voltage dividing resistor Rt1 can also be externally placed, and at this time, one end of the first voltage dividing resistor Rt1 is electrically connected to the first power supply terminal, and the first dividing resistor Rt1 is electrically connected to the first power supply terminal.
  • the other end of the piezoresistor Rt1 is electrically connected to the communication terminal, the communication terminal is electrically connected to one end of the second voltage dividing resistor Rt2, the other end of the second voltage dividing resistor Rt2 is electrically connected to the power ground terminal GND, and the signal sampling unit 771 is connected to the communication terminal electrical connection.
  • the system circuit 150 and the battery protection module 130 have the same criteria for judging whether a voltage belongs to a logic high level or a logic low level, that is, they are all judged by the third threshold voltage, which is conducive to unification Design standards and reduce complexity. Therefore, in this embodiment, the first voltage dividing resistor Rt1 and the second voltage dividing resistor Rt2 connected in series need to be designed for voltage dividing. But the present application is not limited thereto. In other embodiments of the present application, the battery protection module 130 judges whether a voltage is at a logic high level or a logic low level through the third threshold voltage, and the system circuit 150 judges whether a voltage is at a logic high level or a logic low level through the fourth threshold voltage.
  • the third threshold voltage is greater than the fourth threshold voltage
  • the range of the third threshold voltage is greater than the upper limit of the voltage corresponding to the logic high level of the first pulse signal, and less than the first
  • the lower limit of the voltage corresponding to the logic high level of the second pulse signal for example, the range of the third threshold voltage is greater than 3.5V and less than 4V, such as 3.7V
  • the range of the fourth threshold voltage is less than the logic high level of the first pulse signal
  • the lower limit of the corresponding voltage for example, the range of the fourth threshold voltage is 0.5V-1.8V, such as 1.2V, thus, by setting in this way, the setting of the first voltage dividing resistor Rt1 is not needed, and the first pulse signal is Whether it is at a logic high level or a logic low level, the voltages thereof are both less than the third threshold voltage, and both are judged to be at a low level by the signal sampling unit 771 , which is an invalid signal.
  • the reference grounds of the system circuit 150 and the battery protection module 130 are the same, which are the negative pole of the battery 110 or the power ground terminal GND.
  • each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments.
  • For the same and similar parts in each embodiment refer to each other, that is, Can.
  • the description is relatively simple, and for related parts, please refer to the part of the description of the method embodiment.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Des modes de réalisation de la présente demande concernent un ensemble écouteur-bouton sans fil comprenant un écouteur-bouton sans fil et un boîtier de charge. L'écouteur-bouton sans fil comprend une première batterie, un premier circuit de protection de batterie, un circuit de système, une première unité de commutation et une pluralité de premiers contacts. Une première unité de commande logique est électriquement connectée à la première unité de commutation de façon à commander la marche/l'arrêt de la première unité de commutation ; la première unité de commutation est utilisée pour commander la première batterie de fournir de l'énergie au circuit de système, et le premier circuit de protection de batterie est en également connecté électriquement aux premiers contacts. Le boîtier de charge comprend une pluralité de seconds contacts, les seconds contacts étant en connexion électrique de type contact avec les premiers contacts. Le boîtier de charge émettent un signal de réinitialisation, et le signal de réinitialisation est émis au premier circuit de protection de batterie par l'intermédiaire des seconds contacts et des premiers contacts. La première unité de commande logique commande la mise hors tension de la première unité de commutation de sorte que la première batterie arrête de fournir de l'énergie au circuit de système, et après que la première unité de commutation est éteinte pendant une première période de temps prédéfinie, la première unité de commande logique commande la commutation de la première unité de commutation de reprendre l'alimentation électrique de la première batterie au circuit de système. Des modes de réalisation de la présente demande concernent en outre un circuit de protection de batterie, un ensemble batterie, un appareil électronique et un ensemble électronique.
PCT/CN2022/142686 2022-01-14 2022-12-28 Ensemble écouteur sans fil, circuit de protection de batterie, ensemble batterie, appareil électronique et ensemble électronique WO2023134449A1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
CN202210045139.2 2022-01-14
CN202210045139.2A CN114401468A (zh) 2022-01-14 2022-01-14 一种无线耳机组件
CN202210524105.1A CN114825543A (zh) 2022-05-13 2022-05-13 一种无线耳机组件
CN202210524103.2 2022-05-13
CN202210524103.2A CN114784913A (zh) 2022-05-13 2022-05-13 一种电池保护电路、电池组件、电子装置及电子组件
CN202210524141.8A CN114845201A (zh) 2022-05-13 2022-05-13 一种无线耳机组件
CN202210524105.1 2022-05-13
CN202210524141.8 2022-05-13

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