CN217363283U

CN217363283U - Electronic device and wireless earphone assembly

Info

Publication number: CN217363283U
Application number: CN202221039422.6U
Authority: CN
Inventors: 张益�; 蔡斌
Original assignee: Harman International Industries Inc
Current assignee: Harman International Industries Inc
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-09-02
Anticipated expiration: 2032-04-29

Abstract

An electronic device and a wireless headset assembly are disclosed. The electronic device includes: a controller having a power supply terminal and a switch holding terminal; a battery; a switching device having an on state and an off state, wherein the battery is connected to the power supply terminal of the controller through the switching device, in the on state of the switching device, the battery is electrically connected to the power supply terminal of the controller for supplying power to the controller, and in the off state of the switching device, the battery is not electrically connected to the power supply terminal of the controller, wherein the switch holding terminal of the controller is connected to the switching device, the switch holding terminal of the controller continuously outputs a first level to hold the switching device in the on state when the controller is supplied with power, and the switch holding terminal of the controller is further configured to selectively output a second level to change the switching device from the on state to the off state. The wireless headset assembly includes a charging box and a wireless headset adapted to be received in the charging box.

Description

Electronic device and wireless earphone assembly

Technical Field

The utility model relates to an electron device and wireless earphone subassembly.

Background

In recent years, the shipment of TWS headphones has increased dramatically year by year. The TWS headset and the charging box thereof are internally provided with batteries for supplying power to electronic components of the TWS headset and the charging box. TWS headsets often have a relatively long storage time after shipment from the manufacturer. The battery power of the TWS headset and the charging box is gradually consumed in long-term storage. If the battery power of the TWS headset and the charging box is too much consumed in the storage process, the user may need to be charged after purchasing the charging box before using the charging box, and the user experience is affected. Furthermore, if the storage time is too long, the battery power of the charging box of the TWS headset may drain to an extremely low level, thus compromising the safety of the battery. In order to avoid the safety problem that may occur when the battery is recharged after reaching an extremely low level, such as the problem of swelling, many manufacturers do not allow the "0V charging" of the charging box, that is, if the battery capacity of the charging box reaches an extremely low level, the battery can never be charged after the battery voltage drops to 0V.

Some measures have been taken to reduce the power consumption of the wireless headset during the storage time, thereby extending the storage time and protecting the battery. For example, there is a method of adding a "shipping mode" to a TWS headset. When the 'shipping mode' of the TWS headset is started, the protection IC of the headset battery works to cut off the power supply of all electronic components except the protection IC, so that the battery power consumption of the TWS headset in the storage time is reduced. However, the charging box of TWS headphones is not adapted to adopt a "shipping mode". This is because if the charging box is in the "shipping mode", the user must connect the charging box to the power adapter after taking the product to trigger the charging box to exit the "shipping mode". If the user does not have a power adapter at hand, neither the charging box nor the TWS headset can work normally, and the user experience is poor.

Therefore, there is a need for a wireless headset assembly and a charging box thereof that can reduce battery power consumption of the wireless headset and the charging box during storage, thereby extending storage time without affecting user experience.

SUMMERY OF THE UTILITY MODEL

The present invention aims to overcome at least some of the above problems in the prior art.

According to an aspect of the present invention, there is provided an electronic apparatus, including:

a controller having a power supply terminal and a switch hold terminal;

a battery;

a switching device having an on state and an off state,

wherein said battery is connected to said power supply terminal of said controller through said switching device, said battery being electrically connected to said power supply terminal of said controller in an on state of said switching device for supplying power to said controller, said battery not being electrically connected to said power supply terminal of said controller in an off state of said switching device,

wherein the switch hold terminal of the controller is connected with the switching device, the switch hold terminal of the controller continuously outputting a first level to hold the switching device in the on state when the controller is powered, the switch hold terminal of the controller further configured to selectively output a second level to change the switching device from the on state to the off state.

According to one or more embodiments of the present invention, an electronic device includes a switch start unit connected to the switching device, the switch start unit configured to selectively output a third level to change the switching device from the off state to the on state.

According to one or more embodiments of the present invention, the switching device is a first MOS transistor, the switch start-up unit and the switch holding terminal of the controller are connected to a gate of the first MOS transistor, the battery is connected to a drain of the first MOS transistor and the power terminal of the controller is connected to a source of the first MOS transistor.

According to one or more embodiments of the present invention, the electronic device further includes a second MOS transistor and a third MOS transistor connected in parallel, the switch starting unit is connected to the first MOS transistor through the second MOS transistor, the switch holding terminal of the controller is connected to the first MOS transistor through the third MOS transistor,

wherein the drain electrodes of the second MOS transistor and the third MOS transistor are connected to the grid electrode of the first MOS transistor through a first resistor and connected to the battery through a second resistor, the source electrodes of the second MOS transistor and the third MOS transistor are grounded,

the switch starting unit is connected to the grid electrode of the second MOS tube through a diode, and the switch holding end of the controller is connected to the grid electrode of the third MOS tube.

According to one or more embodiments of the present invention, the gate of the third MOS transistor is further grounded through a third resistor.

According to one or more embodiments of the present invention, the electronic device further includes a second MOS transistor, a drain of the second MOS transistor is connected to a gate of the first MOS transistor through a first resistor, and is connected to the battery through a second resistor, a source of the second MOS transistor is grounded, the switch starting unit and the switch holding terminal of the controller are connected to the gate of the second MOS transistor through a diode, respectively.

According to one or more embodiments of the present invention, the electronic device is a charging box for a wireless headset, the charging box further comprising a box cover and a sensor disposed in the charging box for detecting the opening of the box cover,

the charging box further comprises a charging port adapted to be connected to an external power source,

the switch activation unit includes a first switch activation terminal and a second switch activation terminal, the first switch activation terminal is connected to the charging port, the charging port is configured to output a third level to the first switch activation terminal when connected to an external power source,

the second switch actuating terminal is connected to the sensor, and the sensor is configured to output a third level to the second switch actuating terminal when the opening of the box cover is detected.

According to one or more embodiments of the present invention, the electronic device is a charging box for wireless earphones, the charging box further comprises a charging unit connected to the controller, the charging unit is adapted to charge the wireless earphones received in the charging box,

the charging unit is configured to send a signal to the controller to cause the switch holding terminal of the controller to output the second level when detecting that the wireless headset in the charging box is fully charged or no headset is in the charging box.

In accordance with one or more embodiments of the present invention, the electronic device is a wireless headset comprising a button and a charging port adapted to be connected to an external power source, the switch activation unit comprises a first switch activation terminal and a second switch activation terminal,

the first switch enable terminal is connected to the charging port, the charging port is configured to output the third level to the first switch enable terminal when connected to an external power source,

the button is configured to output the third level to the second switch activation terminal when actuated.

According to one or more embodiments of the present invention, the first level is a high level, and the second level is a low level.

According to one or more embodiments of the present invention, the third level is a high level.

According to another aspect of the utility model, a wireless earphone subassembly is provided, wireless earphone subassembly includes the box that charges and is suitable for being accomodate in the wireless earphone in the box that charges.

Drawings

Fig. 1 is a schematic circuit diagram illustrating an electronic device according to one or more embodiments of the present invention;

fig. 2 shows a circuit diagram of an electronic device according to one or more further embodiments of the present invention;

fig. 3 shows a circuit diagram of an electronic device according to yet one or more embodiments of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The utility model provides an electronic device, including controller, battery and switching element. The battery is connected to the controller through the switching device for supplying power to the controller when the switching device is in an on state. The controller includes a switch holding terminal connected to the switching device, the switch holding terminal of the controller continuously outputting a first level to hold the switching device in the on state when the controller is powered. The switch hold terminal of the controller is further configured to selectively output a second level to change the switching device from the on state to the off state.

Therefore, when the electronic device needs to save power for long-term storage, the switch holding end of the controller outputs the second level to cut off the power supply of the controller. Because the controller is in the power-off state, the power consumption of the electronic device is greatly reduced during storage.

According to some embodiments of the invention, the electronic device further comprises a switch activation unit. The switch starting unit changes the switching device from the off state to the on state in response to a specific operation by a user, and restores power supply to the controller.

According to some embodiments of the invention, the electronic device is a charging box for a TWS headset. The charging box is capable of cutting power to the controller when the TWS headset therein is fully charged or when there is no headset therein. The charging box can resume power supply to the controller in response to the charging box being connected to an external power source or a lid of the charging box being opened.

Therefore, according to the utility model discloses a power consumptive when the box that charges can automatic cutout is with reducing the storage to the power supply of controller, the power supply of automatic recovery controller when the box is charged in user operation simultaneously can to not influence user's use and experience.

Fig. 1 shows a schematic circuit diagram illustrating an electronic device 100 according to one or more embodiments of the present invention. The electronic device 100 includes a controller U11, a switching device Q11, and a battery BAT. The controller U11 has a power supply terminal VDD and a switch hold terminal GPIO 2. The battery BAT has a battery output terminal. The switching device Q11 has a first terminal Q11-1, a second terminal Q11-2 and a third terminal Q11-3. The switching device Q11 has an on state and an off state. In the on state of the switching device Q11, the first terminal Q11-1 and the second terminal Q11-2 of the switching device Q11 are electrically connected. In the off state of the switching device Q11, the electrical connection of the first terminal Q11-1 and the second terminal Q11-2 of the switching device Q11 is broken. The level of the third terminal Q11-3 of the switching device Q11 can control the state of the switching device Q11. In some embodiments, the switching device Q11 is in an on state when the third terminal Q11-3 of the switching device Q11 is at a first level, and the switching device Q11 is in an off state when the third terminal Q11-3 of the switching device is at a second level.

The power supply terminal VDD of the controller U11 is electrically connected to the first terminal Q11-1 of the switching device Q11, and the battery output terminal of the battery BAT is electrically connected to the second terminal Q11-2 of the switching device Q11, so that the battery BAT is connected to the power supply terminal of the controller U11 through the switching device Q11 to supply power to the controller U11 when the switching device Q11 is in an on state. The switch hold terminal GPIO2 of the controller U11 is electrically connected to the third terminal Q11-3 of the switching device Q11. The switch hold terminal GPIO2 of the controller U11 continuously outputs the first level when the controller is powered to maintain the switching device Q11 in an on state so that the battery BAT continuously supplies power to the controller U11.

The switch hold terminal GPIO2 of the controller U11 is also configured to selectively output a second level to change the switching device Q11 from an on state to an off state under certain circumstances. After the switch Q11 is in the off state, power to the controller U11 is cut off. Since the power supply of the controller U11 is cut off, the switch hold terminal GPIO2 of the controller U11 does not output the first level any more. Therefore, the switching device Q11 will remain in the off state and the controller U11 will remain in the power-off state.

In some embodiments, when the electronic device 100 needs to save power for long-term storage, the switch hold terminal GPIO2 of the controller U11 outputs the second level to cut off the power supply of the battery BAT to the controller U11. After the switch holding terminal GPIO2 of the U11 outputs the second level, since the controller U11 is in the power-off state, the power consumption of the entire electronic device 100 during storage is greatly reduced, which greatly prolongs the maximum storage time of the electronic device 100.

According to some embodiments of the present invention, the electronic device 100 further comprises a switch activation unit U15. The switch starting unit U15 is electrically connected with the third terminal Q11-3 of the switching device Q11. The switch activation unit U15 is used to output a first level when needed, changing the switching device Q11 from an off state to an on state. According to some embodiments of the present invention, the switch starting unit U15 outputs the first level in response to a specific operation by a user. For example, when the user connects the electronic device 100 to an external power source, the switch activation unit U15 outputs a first level. When the electronic device 100 is a charging box of a TWS headset, the switch activation unit U15 may also output the first level in response to a user opening a lid of the charging box.

After the switch activation unit U15 outputs the first level, the switching device Q11 changes from the off state to the on state, and the battery BAT supplies power to the controller U11. After the U11 is powered, the switch hold terminal GPIO2 of the U11 will continuously output the first level, so that the switching device Q11 is kept in the on state, and the battery BAT continuously supplies power to the controller U11.

In some embodiments according to the present invention, the output of the switch activation unit U15 may be a third level different from the first level for changing the switching device Q11 from an off state to an on state.

According to the utility model discloses an electronic device 100 can be when needs, for example when electronic device 100 needs long-term storage, through controller U11 to the third end Q11-3 of switching device Q11 output the second level and cut off the power supply of controller U11 to reduce the power consumptive when electronic device 100 stores, this has prolonged the longest storage time of electronic device 100 greatly. In addition, the switch actuating unit U15 of the electronic device 100 can output the first level to the third terminal Q11-3 of the switching device Q11 in response to a specific operation by the user to restore power supply to the controller U11, so that the user can normally use the electronic device 100.

Fig. 2 shows a circuit diagram of an electronic device according to one or more further embodiments of the present invention. Hereinafter, description will be made in conjunction with an embodiment in which the electronic device shown in fig. 2 is a charging box 200 for a TWS headset. However, the present invention is not limited thereto, and the electronic device shown in fig. 2 may be other suitable electronic devices other than the charging box.

The charging box 200 includes a controller U21, a charging unit U22, a hall element U23, a battery BAT, and a battery protection chip U24. The charging unit U22 is used to charge the TWS headset housed within the charging box 200 through charging contacts R +, R-, L +, and L-. The hall element U23 is used to detect the opening and closing of the lid of the charging box and output a high level when detecting the opening of the lid of the charging box. The charging box 200 further includes a first MOS transistor Q21, a second MOS transistor Q22, and a third MOS transistor Q23. The charging box 200 further includes a first switch actuating terminal S1 and a second switch actuating terminal S2. The first switch enable terminal S1 and the second switch enable terminal S2 may also be collectively referred to as a switch enable unit. In the embodiment shown in the figure, the first MOS transistor Q21 is a P-type MOS transistor, and the second MOS transistor Q22 and the third MOS transistor Q23 are N-type MOS transistors.

The controller U21 has a power supply terminal VDD and a switch hold terminal GPIO 2. The battery BAT has a battery output terminal. The battery BAT is connected to a power supply terminal of the controller U21 through the first MOS transistor Q21, and supplies power to the controller U21 when the first MOS transistor Q21 is in a conducting state. In some embodiments, the battery output terminal of the battery BAT is electrically connected to the drain of the first MOS transistor Q21, and the power supply terminal VDD of the controller U11 is electrically connected to the source of the first MOS transistor Q21.

The charging box 200 further includes a second MOS transistor Q22 and a third MOS transistor Q23 connected in parallel. The first switch-on terminal S1 and the second switch-on terminal S2 of the charging box 200 are connected to the gate of the first MOS transistor Q21 through the second MOS transistor Q22, and the switch hold terminal GPIO2 of the controller U21 is connected to the gate of the first MOS transistor Q21 through the third MOS transistor Q23. In some embodiments, the drains of the second MOS transistor Q22 and the third MOS transistor Q23 are connected to the gate of the first MOS transistor Q21 through a first resistor R1, and connected to the battery BAT through a second resistor R2. The sources of the second MOS transistor Q22 and the third MOS transistor Q23 are grounded. The first switch start-up terminal S1 and the second switch start-up terminal S2 are connected to the gate of the second MOS transistor Q22 through a first diode D1 and a second diode D2, respectively. The switch holding terminal GPIO2 of the controller U21 is connected to the gate of the third MOS transistor Q23. In some embodiments, the switch hold terminal GPIO2 of the controller U21 is also grounded through a third resistor R3.

In normal operation of the charging box 200, the first MOS transistor Q21 is in a conducting state, and the battery output terminal of the battery BAT supplies power to the controller U21 through the first MOS transistor Q21. When the controller U21 is powered, the switch hold terminal GPIO2 of the controller U21 continues to output a high level to the gate of the third MOS transistor Q23. The high level of the gate of the third MOS transistor Q23 makes the third MOS transistor Q23 (N-type MOS transistor) in a conducting state. Since the third MOS transistor Q23 is in a conducting state, the gate of the first MOS transistor Q21 is substantially grounded through the third MOS transistor Q23 and is at a low level, and therefore the first MOS transistor Q21 is also in a conducting state. At this time, the battery BAT may continuously supply power to the controller U21, and the charging box 200 is continuously in a normal operation state.

The switch hold terminal GPIO2 of the controller U21 is also configured to selectively output a low level under certain circumstances. In some embodiments, when the charging unit U22 detects that the charging box 200 is not connected to an external power source, and that the TWS headset housed by the charging box 200 is fully charged or that there is no headset within the charging box 200, the charging unit U22 sends a signal to the controller U21 so that the switch hold terminal GPIO2 of the controller U21 outputs a low level. The switch of the controller U21 keeps the low level of the GPIO2 to turn off the third MOS transistor Q23. Since the third MOS transistor Q23 is in an off state (at this time, the second MOS transistor is also in an off state), the gate of the first MOS transistor Q21 is turned on with the battery output voltage VBAT and is at a high level, and the first MOS transistor Q21 is turned off, so that the battery BAT no longer supplies power to the controller U21. When the power supply to the controller U21 is cut off, the gate of the third MOS transistor Q23 is grounded through the third resistor R3 and is at a low level, and the third MOS transistor Q23 is continuously in an off state (at this time, the second MOS transistor is normally also in an off state). The gate of the first MOS transistor Q21 is turned on and at a high level with the battery output voltage VBAT, and the first MOS transistor Q21 is turned off, so that the controller U21 remains in a power-off state. Since the controller U21 is in the power-off state, the power consumption of the entire electronic apparatus 100 during the storage period is greatly reduced, which greatly prolongs the maximum storage time of the electronic apparatus 200.

As shown, the first switch enable terminal S1 is connected to a charging port VIN adapted to be connected to an external power source, and the second switch enable terminal S2 is connected to the hall element U23. When the charging box 200 is connected to an external power supply or the hall element U23 detects that the cover of the charging box is opened, the charging port VIN or the hall element U23 outputs a high level to the first switch-start terminal S1 or the second switch-start terminal S2, and the second MOS transistor Q22 is turned on. At this time, the gate of the first MOS transistor Q21 is grounded through the second MOS transistor, and is at a low potential, so that the first MOS transistor Q21 is turned on. Therefore, the battery BAT supplies power to the controller U21 through the first MOS transistor Q21. After the controller U21 obtains power supply, the switch hold terminal GPIO2 of the controller U21 continuously outputs a high level to the gate of the third MOS transistor Q23. The high level of the gate of the third MOS transistor Q23 keeps the third MOS transistor Q23 (N-type MOS transistor) in a conducting state. Since the third MOS transistor Q23 is kept in a conducting state, the gate of the first MOS transistor Q21 is kept at a low level by the third MOS transistor Q23 being grounded, and thus the first MOS transistor Q21 is kept in a conducting state. At this time, the battery BAT may continuously supply power to the controller U21, and the charging box 200 is also maintained in a normal operation state.

According to the utility model discloses a box 200 charges can be in the box 200 that charges when the TWS earphone is full of the electricity or the box that charges does not have the earphone in, keep holding end GPIO2 through the switch from controller U21 and export the low level and cut off the power supply of controller U21 to reduce the power consumptive of box 200 that charges when the storage, this has prolonged the longest storage time of the box 200 that charges greatly. Further, the switch actuating unit of the charging box 200 can restore power supply to the controller U21 in response to the charging box being connected to an external power source or the lid of the charging box being opened, thereby restoring normal use of the charging box 200. That is, the charging box 200 can automatically shut off power to the controller U21 when the TWS headset is fully charged or when there is no headset in the charging box to extend the maximum storage time of the charging box. Meanwhile, the charging box can automatically turn on the power supply of the charging box 200 when the user connects the charging box to the power supply or opens the box cover of the charging box, so that the normal use of the user is not affected. Accordingly, the charging box 200 can greatly extend the maximum storage time of the charging box 200 without degrading the user experience.

Some typical operations of the charging box 200 as shown in fig. 2 are described below.

Scene 1: if the lid of the charging box 200 is opened and then closed, the hall element U23 sends a low level to the controller U21. The charging box 200 detects the low level of the hall element U23, and prepares to charge the TWS headset housed in the charging box 200 through the charging unit U22 and via the charging contacts R +, R-, L +, and L-.

(a) At this time, if the TWS headset is in the charging box, the charging unit U22 detects the TWS headset inside the charging box and starts charging. At this time, the switch holding terminal GPIO2 of the controller U21 keeps high level, and the third MOS transistor Q23 keeps on. The grid of the first MOS transistor Q21 is grounded through the third MOS transistor Q23, the first MOS transistor Q21 is kept conductive, and the battery BAT continuously supplies power to the controller U21. While the charging unit U22 continues to charge the TWS headset. If the TWS earphone is fully charged, the charging unit U22 signals the controller U21, the controller U21 outputs low level through the switch holding terminal GPIO2, and the third MOS transistor Q23 is cut off. Since the third MOS transistor Q23 is in an off state (at this time, the second MOS transistor is also in an off state), the gate of the first MOS transistor Q21 is connected to the battery output voltage VBAT and is at a high level, the first MOS transistor Q21 is turned off, and the power supply of the controller U21 is cut off.

(b) At this time, if the TWS headset is not in the charging box, the charging unit U22 detects that there is no headset inside the charging box 200 and notifies the controller U21. The controller U21 outputs low level through the switch holding terminal GPIO2, and the third MOS transistor Q23 is turned off. Since the third MOS transistor Q23 is in the off state (at this time, the second MOS transistor is also in the off state), the gate of the first MOS transistor Q21 is turned on with the battery output voltage VBAT and is at a high level, the first MOS transistor Q21 is turned off, and the power supply of the controller U21 is cut off.

In both scenarios (a) and (b) of scenario 1, when the TWS headset is fully charged or when the TWS headset is not in the charging box, the power supply to the controller U21 is cut off, so that the power consumption of the charging box is reduced and the maximum storage time of the charging box is greatly increased.

Scene 2: when the lid of the charging box is closed and the controller Q21 is in the power-off state, the user opens the lid of the charging box. The hall element U23 of the charging box 200 detects that the box cover of the charging box is opened, and the hall element U23 outputs a high level. The high level output by the hall element U23 is output to the gate of the second MOS transistor Q22 via the second switch start terminal S2 and the second diode D2, and the second MOS transistor Q22 is turned on. At this time, the gate of the first MOS transistor Q21 is grounded through the second MOS transistor Q22, the first MOS transistor Q21 is turned on, and the battery BAT supplies power to the controller U21. After the controller U21 is powered, the switch holding terminal GPIO2 continues to output high level, and the third MOS transistor Q23 remains on. The gate of the first MOS transistor Q21 is kept at ground, so that the first MOS transistor Q21 is kept conductive and the charging box 200 operates normally.

Scene 3: when the lid of the charging box is closed and the controller Q21 is in the power-off state, the charging box 200 is connected to an external power supply. The first switch start terminal S1 connected to the charge port VIN outputs the high level of the charge port VIN to the gate of the second MOS transistor Q22 via the first diode D1, and the second MOS transistor Q22 is turned on. At this time, the gate of the first MOS transistor Q21 is grounded through the second MOS transistor Q22, the first MOS transistor Q21 is turned on, and the battery BAT supplies power to the controller U21. After the controller U21 is powered, the switch holding terminal GPIO2 continues to output high level, and the third MOS transistor Q23 remains on. The gate of the first MOS transistor Q21 is kept at ground, so that the first MOS transistor Q21 is kept conductive and the charging box 200 operates normally. If the TWS headset in the charging box 200 is fully charged at this time, the controller U21 will enter a sleep mode.

At this time, if the external power supply is removed, since the TWS earphone is fully charged, the controller U21 outputs a low level to the third MOS transistor Q23 through the switch holding terminal GPIO2, and the third MOS transistor Q23 is turned off. Since the third MOS transistor Q23 is in the off state (at this time, the second MOS transistor is also in the off state), the gate of the first MOS transistor Q21 is turned on with the battery output voltage VBAT and is at a high level, the first MOS transistor Q21 is turned off, and thus the power supply of the controller U21 is cut off.

Fig. 3 shows a circuit diagram of an electronic device according to yet another or more embodiments of the invention. In some embodiments, the electronic device shown in fig. 3 is a charging box 300 for a TWS headset. However, the present invention is not limited thereto, and the electronic device shown in fig. 3 may be other suitable electronic devices other than the charging box.

The charging box 300 includes a controller U31, a charging unit U32, a hall element U33, a battery BAT, and a battery protection chip U34. The charging box 300 further includes a first MOS transistor Q31 and a second MOS transistor Q22. The main difference between the charging box 300 shown in fig. 3 and the charging box 200 shown in fig. 2 is that the charging box 300 does not include the third MOS transistor, and the switch holding terminal GPIO2 of the controller U31 is connected to the gate of the second MOS transistor Q22 through the third diode D3. In the charging box 300, as long as one of the switch hold terminal GPIO2, the first switch start terminal S1 and the second switch start terminal S2 of the controller U31 outputs a high level, the second MOS transistor Q32 is turned on, and the gate of the first MOS transistor Q31 is grounded through the second MOS transistor Q32, so that the gate is at a low level. Therefore, the first MOS transistor Q31 is turned on, and the battery BAT supplies power to the controller U31 through the first MOS transistor Q31. If the switch hold terminal GPIO2, the first switch start terminal S1 and the second switch start terminal S2 of the controller U31 are all at a low level, the second MOS transistor Q32 is turned off, and the gate of the first MOS transistor Q31 is turned on with the battery voltage VBAT and is at a high level. Therefore, the first MOS transistor Q31 is turned off, and the controller U31 is in a power-off state. Other structures and operations of the charging box 300 are similar to those of the charging box 200, and are not described in detail herein.

The inventor of the present invention compared the power consumption of the charging box of the embodiment shown in fig. 2 to 3 with the power consumption of the existing charging box in the storage state, wherein the power supply of the controller is cut off in the storage state of the charging box of the embodiment shown in fig. 2 to 3, and the existing charging box is in the sleep state in the storage state. The results of the comparison are shown in the following table. As can be seen from the following table, in the storage state of the existing charging box, the controller of the sleep state is the main power consumption source. The utility model discloses a box that charges can automatic cutout controller's power in the storage process, this greatly reduced the box that charges power consumption (from 56.4uA decline to 6.4uA) to the longest storage time of the box that charges has been prolonged greatly.

In the embodiment shown in fig. 2-3, the switch hold terminal GPIO2 of the controller outputs a low level to cut off power to the controller when the headphones in the charging box are fully charged or when no headphones are in the charging box. The present invention is not limited to this, and in some other embodiments, the switch holding terminal GPIO2 of the controller may output a low level to cut off the power supply to the controller under other suitable conditions. For example, the switch hold terminal GPIO2 of the controller may output a low level to cut off power to the controller without detecting any opening and closing actions of the lid of the charging box for a period of time (e.g., one week or three days, etc.).

In the embodiment shown in fig. 2-3, the charging box includes a first switch enable terminal S1 and a second switch enable terminal S2 connected to the charging port VIN and the hall element U33, respectively. The present invention is not limited thereto, and in other embodiments, the charging box may not include the first switch actuating terminal S1 and/or the second switch actuating terminal S2. The charging box may also comprise a further switch activation terminal, which may for example be connected to a push button. When the button is actuated, the starting end of the switch outputs high level to restore the power supply of the controller.

The controller of the embodiment of the utility model can be any suitable controller, for example CPU, MCU, singlechip, microprocessor etc. In the embodiment shown in fig. 2-3, a hall element is used to detect the opening and closing of the lid of the charging box. In other embodiments according to the present invention, any suitable sensor may be used to detect the opening and closing of the lid.

The utility model discloses can realize following mode:

item 1: an electronic device, comprising:

a controller having a power supply terminal and a switch hold terminal;

a battery;

a switching device having an on state and an off state,

wherein said battery is connected to said power supply terminal of said controller through said switching device, said battery being electrically connected to said power supply terminal of said controller in an on state of said switching device for supplying power to said controller, said battery being not electrically connected to said power supply terminal of said controller in an off state of said switching device,

Item 2: the electronic device of item 1, comprising:

a switch enable unit connected with the switching device, the switch enable unit configured to selectively output a third level to change the switching device from the off state to the on state.

Item 3: the electronic apparatus according to any of items 1-2, wherein the switching device is a first MOS transistor, the switch activating unit and the switch holding terminal of the controller are connected to a gate of the first MOS transistor, the battery is connected to a drain of the first MOS transistor and the power supply terminal of the controller is connected to a source of the first MOS transistor.

Item 4: the electronic device according to any of items 1 to 3, further comprising a second MOS transistor and a third MOS transistor connected in parallel, wherein the switch start unit is connected to the first MOS transistor through the second MOS transistor, the switch hold terminal of the controller is connected to the first MOS transistor through the third MOS transistor,

Item 5: the electronic device of any of items 1-4, wherein the gate of the third MOS transistor is further grounded through a third resistor.

Item 6: the electronic device according to any of items 1 to 5, further comprising a second MOS transistor, a drain of the second MOS transistor being connected to a gate of the first MOS transistor through a first resistor and to the battery through a second resistor, a source of the second MOS transistor being grounded, the switch start unit and the switch holding terminal of the controller being connected to a gate of the second MOS transistor through a diode, respectively.

Item 7: the electronic device according to any one of items 1 to 3, which is a charging case for a wireless headset, the charging case further comprising a case cover and a sensor provided in the charging case for detecting opening of the case cover,

Item 8: the electronic device of any of items 1-7, which is a charging box for a wireless headset, further comprising a charging unit connected with the controller, the charging unit adapted to charge a wireless headset received in the charging box,

Item 9: the electronic device of any of items 1-8, which is a wireless headset comprising a button and a charging port adapted to be connected to an external power source, the switch activation unit comprising a first switch activation terminal and a second switch activation terminal,

Item 10: the electronic device of any of items 1-9, wherein the first level is a high level and the second level is a low level.

Item 11: the electronic device of any of items 1-10, wherein the third level is a high level.

Item 12: a wireless headset assembly comprising a charging box and a wireless headset adapted to be received in the charging box, the charging box being an electronic device according to any of items 1-11.

The above description is only for the purpose of illustrating exemplary embodiments of the principles of the present invention, and is not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also within the scope of the invention.

Claims

1. An electronic device, comprising:

a controller having a power supply terminal and a switch hold terminal;

a battery;

a switching device having an on state and an off state,

2. The electronic device of claim 1, comprising:

3. The electronic apparatus according to claim 2, wherein said switching device is a first MOS transistor, said switch activating unit and said switch holding terminal of said controller are connected to a gate of said first MOS transistor, said battery is connected to a drain of said first MOS transistor and said power terminal of said controller is connected to a source of said first MOS transistor.

4. The electronic device according to claim 3, wherein the electronic device further comprises a second MOS transistor and a third MOS transistor connected in parallel, the switch activating unit is connected to the first MOS transistor through the second MOS transistor, the switch holding terminal of the controller is connected to the first MOS transistor through the third MOS transistor,

wherein the drains of the second MOS transistor and the third MOS transistor are connected to the gate of the first MOS transistor through a first resistor and to the battery through a second resistor, the sources of the second MOS transistor and the third MOS transistor are grounded,

5. The electronic device of claim 4, wherein the gate of the third MOS transistor is further connected to ground through a third resistor.

6. The electronic device according to claim 3, wherein the electronic device further comprises a second MOS transistor, a drain of the second MOS transistor is connected to the gate of the first MOS transistor through a first resistor, and is connected to the battery through a second resistor, a source of the second MOS transistor is grounded, and the switch start unit and the switch holding terminal of the controller are respectively connected to the gate of the second MOS transistor through a diode.

7. An electronic device as claimed in any one of claims 2-6, characterized in that

The electronic device is a charging box for the wireless earphone, the charging box also comprises a box cover and a sensor which is arranged in the charging box and is used for detecting the opening of the box cover,

8. The electronic device of any of claims 1-6, wherein

The electronic device is a charging box for a wireless headset, the charging box further comprises a charging unit connected with the controller, the charging unit is suitable for charging the wireless headset received in the charging box,

9. The electronic device of any of claims 2-6, wherein

The electronic device is a wireless headset comprising a button and a charging port adapted to be connected to an external power source, the switch activation unit comprises a first switch activation terminal and a second switch activation terminal,

10. The electronic device of any of claims 1-6, wherein the electronic device is further characterized by

The first level is a high level and the second level is a low level.

11. The electronic device of any of claims 2-6, wherein

The third level is a high level.

12. A wireless headset assembly, characterized in that the wireless headset assembly comprises a charging box and a wireless headset adapted to be received in the charging box, the charging box being an electronic device according to any one of claims 7-8.