CN214708026U - Residual capacity display circuit, earphone box and earphone subassembly - Google Patents
Residual capacity display circuit, earphone box and earphone subassembly Download PDFInfo
- Publication number
- CN214708026U CN214708026U CN202120991116.1U CN202120991116U CN214708026U CN 214708026 U CN214708026 U CN 214708026U CN 202120991116 U CN202120991116 U CN 202120991116U CN 214708026 U CN214708026 U CN 214708026U
- Authority
- CN
- China
- Prior art keywords
- nixie tube
- led nixie
- mcu
- display
- earphone
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application provides a residual capacity display circuit, earphone box and earphone subassembly relates to bluetooth headset technical field. The residual electric quantity display circuit is applied to an earphone box, a storage battery is arranged in the earphone box, the residual electric quantity display circuit comprises an MCU, an electricity meter and a display, the MCU is respectively and electrically connected with the electricity meter, the storage battery and the display, and the electricity meter is electrically connected with the storage battery; the electricity meter is used for detecting the residual electricity quantity information of the storage battery and transmitting the residual electricity quantity information to the MCU; the MCU is used for generating a control signal according to the residual electric quantity information and transmitting the control signal to the display; the display is embedded in the earphone box and exposes the display surface so as to display the residual electric quantity information on the display surface according to the control signal. The application provides a residual capacity display circuit, earphone box and earphone subassembly have can show residual capacity, and user experience feels higher advantage.
Description
Technical Field
The application relates to the technical field of Bluetooth earphones, in particular to a residual power display circuit, an earphone box and an earphone assembly.
Background
Due to the fact that the TWS (True Wireless Stereo) earphone is arranged, the experience of a user of the intelligent machine is greatly improved, and the use convenience is improved. And the TWS earphone box bears the functions of loading and charging the earphones.
The current earphone box does not have the function that can show the electric quantity. Therefore, the user cannot clearly know the specific electric quantity, and cannot estimate the information such as how long the earphone can be used and when the earphone needs to be charged, and the user experience is poor.
In summary, the earphone box provided in the prior art has a problem that the remaining power cannot be displayed.
Disclosure of Invention
An object of this application is to provide a residual capacity display circuit, earphone box and earphone subassembly to solve the problem that the earphone box can not show residual capacity among the prior art.
In order to achieve the above purpose, the embodiments of the present application employ the following technical solutions:
in a first aspect, the application provides a remaining power display circuit, which is applied to an earphone box, wherein a storage battery is arranged in the earphone box, the remaining power display circuit comprises an MCU, a power meter and a display, the MCU is electrically connected with the power meter, the storage battery and the display respectively, and the power meter is electrically connected with the storage battery; wherein the content of the first and second substances,
the electricity meter is used for detecting the residual electricity quantity information of the storage battery and transmitting the residual electricity quantity information to the MCU;
the MCU is used for generating a control signal according to the residual electric quantity information and transmitting the control signal to the display;
the display is embedded in the earphone box and exposes out of the display surface, so that the residual electric quantity information is displayed on the display surface according to the control signal.
Optionally, the display includes a first LED nixie tube, a second LED nixie tube and a third LED nixie tube, the first LED nixie tube, the second LED nixie tube and the third LED nixie tube are sequentially arranged, and the first LED nixie tube, the second LED nixie tube and the third LED nixie tube are all electrically connected to the MCU; wherein the content of the first and second substances,
the MCU is used for controlling the lighting states of the first LED nixie tube, the second LED nixie tube and the third LED nixie tube according to the generated control signals so as to display the residual electric quantity information through the first LED nixie tube, the second LED nixie tube and the third LED nixie tube.
Optionally, the MCU controls the lighting states of the first LED nixie tube, the second LED nixie tube and the third LED nixie tube through PWM pulse signals.
Optionally, when the remaining power information is equal to 100%, the MCU controls the lighting states of the first LED nixie tube, the second LED nixie tube and the third LED nixie tube according to the generated control signal;
and when the residual electric quantity information is less than 100%, the MCU controls the lighting states of the second LED nixie tube and the third LED nixie tube according to the generated control signal.
Optionally, the remaining power display circuit further includes a display driving module, each LED nixie tube includes a plurality of LEDs, the display driving module includes a driving triode, a base of the driving triode is electrically connected to the MCU, a collector of the driving triode is electrically connected to a driving power supply, an emitter of the driving triode is electrically connected to anodes of the plurality of LEDs, and cathodes of the plurality of LEDs are electrically connected to the MCU; wherein the content of the first and second substances,
the MCU is used for controlling the conduction state of the driving triode and the LEDs according to the generated control signal so as to control the lighting state of the first LED nixie tube, the second LED nixie tube and the third LED nixie tube.
Optionally, the remaining power display circuit further includes an overvoltage protection module and a charge and discharge module, the overvoltage protection module, the charge and discharge module and the storage battery are electrically connected in sequence, and the MCU is electrically connected to the storage battery through the charge and discharge module.
Optionally, the remaining power display circuit further includes a voltage stabilizing module, and the voltage stabilizing module is electrically connected to the MCU and the charging and discharging module, respectively.
Optionally, the electricity meter is electrically connected with the MCU through an I2C bus.
In a second aspect, the present application further provides an earphone box, which includes the above-mentioned remaining power display circuit.
The third aspect, this application still provides an earphone subassembly, earphone subassembly includes earphone box and bluetooth headset, the earphone box is provided with puts the thing storehouse, bluetooth headset arranges in put in the thing storehouse, wherein, the earphone box includes foretell residual capacity display circuit.
Compared with the prior art, the method has the following beneficial effects:
the application provides a residual electric quantity display circuit, an earphone box and an earphone assembly, wherein the residual electric quantity display circuit is applied to the earphone box, a storage battery is arranged in the earphone box, the residual electric quantity display circuit comprises an MCU, an electricity meter and a display, the MCU is respectively and electrically connected with the electricity meter, the storage battery and the display, and the electricity meter is electrically connected with the storage battery; the electricity meter is used for detecting the residual electricity quantity information of the storage battery and transmitting the residual electricity quantity information to the MCU; the MCU is used for generating a control signal according to the residual electric quantity information and transmitting the control signal to the display; the display is embedded in the earphone box and exposes the display surface so as to display the residual electric quantity information on the display surface according to the control signal. Because including coulomb meter and display in the residual power display circuit that this application provided, consequently MCU accessible coulomb meter obtains the residual power of battery to control the display and show residual power, so that the user can see the residual power of earphone box in real time, experience feels higher.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and it will be apparent to those skilled in the art that other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic block diagram of a remaining power display circuit according to an embodiment of the present disclosure.
Fig. 2 is a schematic structural diagram of a display provided in an embodiment of the present application.
Fig. 3 is a circuit diagram of a display driving module according to an embodiment of the present application.
Fig. 4 is another block diagram of a remaining power display circuit according to an embodiment of the present disclosure.
In the figure: 100-residual capacity display circuit; 120-an electricity meter; 130-a display; 131-a first LED nixie tube; 132-a second LED nixie tube; 133-a third LED nixie tube; 140-display driving module; 150-a charge-discharge module; 160-overvoltage protection module; 170-voltage stabilizing module.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally found in use of products of the application, and are used only for convenience in describing the present application and for simplification of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application.
In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
As described in the background, the current earphone box has no function of displaying the amount of power. Therefore, the user cannot clearly know the specific electric quantity, and cannot estimate the information such as how long the earphone can be used and when the earphone needs to be charged, and the user experience is poor.
For example, the current earphone box is only provided with an indicator light, and when the electric quantity of a storage battery in the earphone box is sufficient, the indicator light is green; and when the battery is insufficient, such as less than 10%, the indicator light turns red. The user can not know the residual electric quantity of the storage battery in real time, and the use is inconvenient.
In order to solve the problem, the application provides a residual electric quantity display circuit, and the residual electric quantity of the storage battery is collected and displayed in a mode of setting an electricity meter and a display, so that a user can know the value of the residual electric quantity of the storage battery in real time.
The following is an exemplary description of the remaining power display circuit provided in the present application:
as an implementation manner, referring to fig. 1, the remaining power display circuit 100 is applied to an earphone box, a storage battery is disposed in the earphone box, the remaining power display circuit 100 includes an MCU (micro controller Unit), a fuel gauge 120 and a display 130, the MCU is electrically connected to the fuel gauge 120, the storage battery and the display 130, and the fuel gauge 120 is electrically connected to the storage battery. The electricity meter 120 is used for detecting the remaining power information of the storage battery and transmitting the remaining power information to the MCU, the MCU is used for generating a control signal according to the remaining power information and transmitting the control signal to the display 130, and the display 130 is embedded in the earphone box and exposes the display surface so as to display the remaining power information on the display surface according to the control signal.
The battery is a rechargeable battery arranged inside the earphone box, and for example, the battery can be a lithium battery. On one hand, the storage battery can charge the earphone arranged in the earphone box; on the other hand, the battery can also supply power to the chip in the earphone box. And when the electric quantity of the storage battery is insufficient, the storage battery can be charged through the external power supply.
The fuel gauge 120 is a device designed to measure the amount of power passing through a circuit according to faraday's law, and may also be referred to as a "coulometer". In some implementations, a fuel gauge may be bound to the battery; in other implementation modes, the storage battery exists independently, and on the basis, the electricity meter can be arranged in a later installation mode.
In the present application, the type of the electricity meter 120 is not limited if the post-installation method is adopted, and for example, the electricity meter 120 of the type CW2218AAAC is adopted. In addition, when the electricity meter 120 acquires the remaining capacity information of the battery, the remaining capacity information is transmitted to the MCU. In one implementation, the fuel gauge 120 is electrically connected to the MCU via an I2C bus.
It should also be noted that the MCU may perform various functions in the earphone box. For example, the MCU is connected with an indicator light to display the electric quantity state of the earphone box; or the MCU is connected with the Hall sensor to determine whether the box cover of the earphone box is opened or not and the like. Therefore, it should be understood that, although the present application performs the function of acquiring the remaining power information and then controlling the display 130 to display the remaining power information around the MCU, other functions performed by the MCU are not limited.
In addition, the display 130 provided by the present application is embedded in the earphone box, and the display surface is exposed, so that the user can observe the numbers displayed on the display surface. In addition, the exposed display surface is only required to be visible to a user. For example, in order to protect the display 130, an installation groove may be provided on the earphone box, and after the display 130 is placed in the installation groove, the installation groove may be sealed by a transparent glass or the like, which is also one that exposes the display surface.
As an implementation manner, the display 130 made of an LED Segment display may be used to display the remaining power, the LED Segment display is formed by packaging a plurality of light emitting diodes together to form an 8-shaped device, the lead wires are connected internally, and only the strokes and common electrodes of the LED Segment display need to be LED out. The nixie tube is actually formed by forming 8-shaped light emitting tubes by seven light emitting tubes, and the number of the added decimal points is 8.
On the basis, please refer to fig. 2, the display 130 includes a first LED nixie tube 131, a second LED nixie tube 132 and a third LED nixie tube 133, the first LED nixie tube 131, the second LED nixie tube 132 and the third LED nixie tube 133 are sequentially arranged, and the first LED nixie tube 131, the second LED nixie tube 132 and the third LED nixie tube 133 are all electrically connected to the MCU; the MCU is configured to control the lighting states of the first LED nixie tube 131, the second LED nixie tube 132, and the third LED nixie tube 133 according to the generated control signal, so as to display the remaining power information through the first LED nixie tube 131, the second LED nixie tube 132, and the third LED nixie tube 133.
Since the residual capacity is any number between 0% and 100%, all the situations of the residual capacity can be displayed by arranging three LED nixie tubes. For example, when the remaining power of the storage battery is 100%, the number displayed by the first LED nixie tube 131 is 1, and the numbers displayed by the second nixie tube and the third nixie tube are both 0; when the remaining capacity of the battery is 50%, the first LED nixie tube 131 is turned off, no number is displayed, the number displayed by the second nixie tube is 5, the number displayed by the third nixie tube is 0, and so on.
As shown in fig. 2, each LED nixie tube includes seven light emitting diodes, a, b, c, d, e, f and g, wherein the structures of the second LED nixie tube 132 and the third LED nixie tube 133 are identical to the structure of the first LED nixie tube 131, and therefore, only the light emitting diodes in the first LED nixie tube 131 are labeled in fig. 2.
In the application, the controller can realize digital display by controlling the lighting state of the light emitting diode in each LED nixie tube.
For example, when the number 1 needs to be displayed, the light emitting diodes c and f are controlled to be turned on, when the number 2 needs to be displayed, the light emitting diodes a, c, d, e and g are controlled to be turned on, and so on.
On this basis, please refer to fig. 3 as an implementation manner, the remaining power display circuit further includes a display driving module 140, each LED nixie tube includes a plurality of LEDs, the display driving module 140 includes a driving triode, a base of the driving triode is electrically connected to the MCU, a collector of the driving triode is electrically connected to the driving power supply, an emitter of the driving triode is electrically connected to anodes of the plurality of LEDs, and cathodes of the plurality of LEDs are electrically connected to the MCU; the MCU is configured to control the conduction states of the driving transistor and the LEDs according to the generated control signal, so as to control the lighting states of the first LED nixie tube 131, the second LED nixie tube 132, and the third LED nixie tube 133.
In practical application, each LED nixie tube is connected to a display driving circuit, wherein a power supply Vbat of the display driving circuit is connected to the MCU. It should be noted that the control signal described in the present application actually includes two signals, of which 1 is a Com signal (in the figure, Com1 represents a Com signal transmitted to the first LED digital tube 131), and the other is a GPIO signal. The Com signal is used for driving the on and off states of the triode, and the GPIO is used for specifically lightening which light emitting diode is lightened when the triode is turned on.
For example, when Com1 is at a high level in the signals sent by the MCU, and GPIO3 and GPIO6 are at low level in the GPIO signals, in the driving display module, the loop where the light emitting diode c and the light emitting diode f are located is turned on, the light emitting diode c and the light emitting diode f are turned on, and the rest of the light emitting diodes are still in an off state, as can be seen from the above implementation, the number displayed by the first LED nixie tube 131 in the display 130 is 1.
In fig. 3, Vbat is connected to the MCU, but the MCU is still powered by the battery, and therefore, when the LED nixie tube displays, the battery power is actually consumed. In view of this, the present application provides the following two ways to reduce the power consumption of the LED nixie tube:
first, the MCU controls the lighting states of the first LED nixie tube 131, the second LED nixie tube 132, and the third LED nixie tube 133 through PWM pulse signals.
Since the power consumption needs a certain time, when the remaining power information is displayed, the displayed number does not change in a certain period of time, and on the basis, if the controller continuously drives the number to be always turned on, the power consumption is large. Therefore, the lighting state of the nixie tube is controlled by adopting a PWM pulse signal mode.
In other words, the control is performed by the PWM pulse signal, which actually keeps the leds on and off, and the numbers displayed on the display 130 are not changed due to the persistence of vision. And because the light-emitting diode is continuously in the processes of lighting and extinguishing, the consumed electric quantity of the light-emitting diode is greatly reduced relative to the state of lighting.
Secondly, when the remaining power information is equal to 100%, the MCU controls the lighting states of the first LED nixie tube 131, the second LED nixie tube 132 and the third LED nixie tube 133 according to the generated control signal; when the remaining power information is less than 100%, the MCU controls the lighting states of the second LED nixie tube 132 and the third LED nixie tube 133 according to the generated control signal.
By the implementation mode, only the nixie tube with the minimum number can be controlled based on different conditions, and the operation can further reduce power consumption. It can be understood that, when the remaining power information is less than 10%, the MCU controls the lighting state of the third LED digital tube 133 according to the generated control signal.
Certainly, the storage battery provided in the present application also has a corresponding charge and discharge circuit, as an implementation manner, please refer to fig. 4, the remaining power display circuit further includes an overvoltage protection module 160 and a charge and discharge module 150, the overvoltage protection module 160, the charge and discharge module 150 and the storage battery are electrically connected in sequence, and the MCU is electrically connected to the storage battery through the charge and discharge module 150.
Wherein, overvoltage protection module 160 still is used for being connected with Type-C, and then utilizes Type-C to connect external power source to charge the battery through the return circuit that Type-C, overvoltage protection module 160, charge-discharge module 150 constitute.
Meanwhile, the storage battery supplies power to the MCU through the charge and discharge module 150. In addition, when the earphone is placed in the earphone box, the storage battery supplies power to the earphone through the charging and discharging module 150 so as to charge the earphone.
In order to protect the MCU, as an implementation manner, the remaining power display circuit further includes a voltage stabilizing module 170, and the voltage stabilizing module 170 is electrically connected to the MCU and the charging and discharging module 150, respectively. For example, the voltage stabilizing module 170 may be a 3.3V voltage regulator tube, so as to ensure that the power supply input to the MCU is 3.3V, thereby providing a guarantee for the MCU to operate normally.
Based on the above implementation manner, the application further provides an earphone box, and the earphone box comprises the residual electric quantity display circuit.
In addition, this application still provides an earphone subassembly, and this earphone subassembly includes earphone box and bluetooth headset, and the earphone box is provided with puts the thing storehouse, and bluetooth headset arranges in put in the thing storehouse, wherein, the earphone box includes foretell residual capacity display circuit. And, when bluetooth headset arranged in put the thing storehouse and do, the battery in the earphone box still can charge bluetooth headset.
In summary, the application provides a remaining power display circuit, an earphone box and an earphone assembly, wherein the remaining power display circuit is applied to the earphone box, a storage battery is arranged in the earphone box, the remaining power display circuit comprises an MCU, a power meter and a display, the MCU is respectively electrically connected with the power meter, the storage battery and the display, and the power meter is electrically connected with the storage battery; the electricity meter is used for detecting the residual electricity quantity information of the storage battery and transmitting the residual electricity quantity information to the MCU; the MCU is used for generating a control signal according to the residual electric quantity information and transmitting the control signal to the display; the display is embedded in the earphone box and exposes the display surface so as to display the residual electric quantity information on the display surface according to the control signal. Because including coulomb meter and display in the residual power display circuit that this application provided, consequently MCU accessible coulomb meter obtains the residual power of battery to control the display and show residual power, so that the user can see the residual power of earphone box in real time, experience feels higher.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The residual electric quantity display circuit is characterized in that the residual electric quantity display circuit is applied to an earphone box, a storage battery is arranged in the earphone box, the residual electric quantity display circuit comprises an MCU, an electricity meter and a display, the MCU is respectively and electrically connected with the electricity meter, the storage battery and the display, and the electricity meter is electrically connected with the storage battery; wherein the content of the first and second substances,
the electricity meter is used for detecting the residual electricity quantity information of the storage battery and transmitting the residual electricity quantity information to the MCU;
the MCU is used for generating a control signal according to the residual electric quantity information and transmitting the control signal to the display;
the display is embedded in the earphone box and exposes out of the display surface, so that the residual electric quantity information is displayed on the display surface according to the control signal.
2. The remaining power display circuit of claim 1, wherein the display comprises a first LED nixie tube, a second LED nixie tube and a third LED nixie tube, the first LED nixie tube, the second LED nixie tube and the third LED nixie tube are arranged in sequence, and the first LED nixie tube, the second LED nixie tube and the third LED nixie tube are all electrically connected with the MCU; wherein the content of the first and second substances,
the MCU is used for controlling the lighting states of the first LED nixie tube, the second LED nixie tube and the third LED nixie tube according to the generated control signals so as to display the residual electric quantity information through the first LED nixie tube, the second LED nixie tube and the third LED nixie tube.
3. The remaining power display circuit of claim 2, wherein the MCU controls the lighting states of the first LED nixie tube, the second LED nixie tube and the third LED nixie tube through PWM pulse signals.
4. The remaining power display circuit according to claim 2, wherein when the remaining power information is equal to 100%, the MCU controls lighting states of the first LED nixie tube, the second LED nixie tube, and the third LED nixie tube according to the generated control signals;
and when the residual electric quantity information is less than 100%, the MCU controls the lighting states of the second LED nixie tube and the third LED nixie tube according to the generated control signal.
5. The remaining power display circuit according to claim 2, further comprising a display driving module, each of the LED nixie tubes comprises a plurality of LEDs, the display driving module comprises a driving transistor, a base of the driving transistor is electrically connected to the MCU, a collector of the driving transistor is electrically connected to a driving power source, an emitter of the driving transistor is electrically connected to anodes of the plurality of LEDs, and cathodes of the plurality of LEDs are electrically connected to the MCU; wherein the content of the first and second substances,
the MCU is used for controlling the conduction state of the driving triode and the LEDs according to the generated control signal so as to control the lighting state of the first LED nixie tube, the second LED nixie tube and the third LED nixie tube.
6. The remaining power display circuit of claim 1, further comprising an overvoltage protection module and a charge and discharge module, wherein the overvoltage protection module, the charge and discharge module and the storage battery are electrically connected in sequence, and the MCU is electrically connected to the storage battery through the charge and discharge module.
7. The remaining power display circuit according to claim 6, further comprising a voltage regulator module, wherein the voltage regulator module is electrically connected to the MCU and the charge and discharge module, respectively.
8. The remaining power display circuit according to claim 1, wherein the electricity meter is electrically connected to the MCU through an I2C bus.
9. An earphone box, characterized in that the earphone box comprises the remaining power display circuit of any one of claims 1 to 8.
10. An earphone assembly, characterized in that, the earphone assembly includes earphone box and bluetooth earphone, the earphone box is provided with puts the thing storehouse, bluetooth earphone is arranged in put the thing storehouse in, wherein, the earphone box includes the remaining capacity display circuit of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120991116.1U CN214708026U (en) | 2021-05-10 | 2021-05-10 | Residual capacity display circuit, earphone box and earphone subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120991116.1U CN214708026U (en) | 2021-05-10 | 2021-05-10 | Residual capacity display circuit, earphone box and earphone subassembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214708026U true CN214708026U (en) | 2021-11-12 |
Family
ID=78551643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120991116.1U Active CN214708026U (en) | 2021-05-10 | 2021-05-10 | Residual capacity display circuit, earphone box and earphone subassembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214708026U (en) |
-
2021
- 2021-05-10 CN CN202120991116.1U patent/CN214708026U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3252911B1 (en) | Wearable mobile power supply and power supply control method thereof | |
| CN201499600U (en) | Electronic cigarette box | |
| US20140344610A1 (en) | Workstation power system | |
| CN202488535U (en) | Mobile terminal for displaying state of electric quantity in real time | |
| CN108363290A (en) | A kind of intelligence wearing wrist-watch | |
| CN214708026U (en) | Residual capacity display circuit, earphone box and earphone subassembly | |
| TW535343B (en) | Charging device of wireless mouse | |
| CN110851005A (en) | Electronic pen storage device | |
| US20150044532A1 (en) | Battery with visual indicator of power level and electronic device | |
| CN109950957B (en) | Charging cabin, bluetooth headset and Bluetooth headset charging system | |
| CN209458694U (en) | Multi-purpose intelligent explosion-proof flashlight | |
| CN202524128U (en) | Portable power supply | |
| CN202363938U (en) | Automobile emergency power supply with digital display | |
| CN203528312U (en) | Power display device for double-power electric vehicle | |
| CN202749858U (en) | Mobile power supply with precise power display | |
| TW201228473A (en) | Illumination control system and method thereof | |
| CN208476962U (en) | For testing the equipment jig of TYPE-C | |
| CN220343228U (en) | Pet electronic pendant and pet necklace | |
| CN216749252U (en) | Intelligent electronic signboard for remote management | |
| CN201233437Y (en) | Button shape cell detector | |
| CN214542854U (en) | Intelligent control charging data line for mobile phone | |
| CN210836025U (en) | Electronic pen storage device | |
| CN110620864A (en) | Novel fingerprint acquisition instrument | |
| CN218297384U (en) | Brightness sensing buzzing prompter | |
| CN220383256U (en) | Vibration induction LED circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |