CN217689317U - Electric quantity display circuit and bluetooth sound equipment - Google Patents
Electric quantity display circuit and bluetooth sound equipment Download PDFInfo
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- CN217689317U CN217689317U CN202220402581.1U CN202220402581U CN217689317U CN 217689317 U CN217689317 U CN 217689317U CN 202220402581 U CN202220402581 U CN 202220402581U CN 217689317 U CN217689317 U CN 217689317U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses an electric quantity display circuit and bluetooth sound equipment, this circuit includes: the device comprises a main control chip, a battery power detection circuit and a power indicator lamp display circuit; the battery electric quantity detection circuit is connected with the battery and used for detecting working parameters of the battery and outputting an electric quantity detection signal and a charging detection signal; the main control chip is respectively connected with the battery electric quantity detection circuit and the electric quantity indicator lamp display circuit and is used for controlling the electric quantity indicator lamp display circuit to emit light according to the electric quantity detection signal; the main control chip is also used for controlling the battery electric quantity detection circuit to be in a starting state when the battery is determined to be in the charging state according to the charging detection signal. The utility model provides a bluetooth sound equipment can not show the problem of battery power under the power off state.
Description
Technical Field
The utility model relates to a display circuit field, in particular to battery indicator circuit and bluetooth sound equipment.
Background
Need show the electric quantity of battery in the equipment that uses battery powered, current bluetooth sound equipment can only show battery electric quantity when the on state, when opening bluetooth sound equipment, if the discovery electric quantity is not enough, need change and charge, it is inconvenient in fact.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an electric quantity display circuit and power supply unit aims at solving the problem that bluetooth sound equipment can not show battery power under the power off state.
In order to achieve the above object, the utility model provides a power display circuit, include: 1. the device comprises a main control chip, a battery power detection circuit and a power indicator lamp display circuit;
the battery electric quantity detection circuit is connected with the battery and used for detecting working parameters of the battery and outputting an electric quantity detection signal and a charging detection signal;
the main control chip is respectively connected with the battery electric quantity detection circuit and the electric quantity indicator lamp display circuit and is used for controlling the electric quantity indicator lamp display circuit to emit light according to the electric quantity detection signal;
the main control chip is further used for controlling the battery electric quantity detection circuit to be in a starting state when the battery is determined to be in a charging state according to the charging detection signal.
Optionally, the electric quantity display circuit further comprises a charging switch circuit and a charging interface, the charging interface is connected with the battery, the charging interface is used for connecting an external power supply, and the charging switch circuit is connected between the battery and the charging interface and used for controlling the external power supply to charge the battery.
Optionally, battery power detection circuitry includes first chip, first emitting diode and first resistance, first chip includes input pin, ground pin, output pin, the detection of charging foot and feedback pin, the input pin is connected the positive pole of battery, the ground pin is connected the negative pole of battery, the output pin is connected the main control chip, first emitting diode's negative pole respectively with the feedback pin with the battery is connected, first emitting diode's positive pole with the first end of first resistance is connected, the second end of first resistance with the detection of charging foot is connected.
Optionally, the battery power detection circuit further includes a first triode, a second resistor, a third resistor and a fourth resistor, the first chip further includes a full-power detection pin, the full-power detection pin is connected with the first end of the second resistor, the second end of the second resistor is respectively connected with the first end of the third resistor, the first end of the fourth resistor and the base of the first triode, the collector of the first triode is respectively connected with the second end of the third resistor and the battery, and the emitter of the first triode and the second end of the fourth resistor are grounded.
Optionally, the electric quantity indicator light display circuit includes a second light emitting diode, a third light emitting diode, a fourth light emitting diode and a fifth light emitting diode, and when the electric quantity detected by the battery electric quantity detection circuit is in a first preset interval, the second light emitting diode flickers; when the first preset interval is reached, the first light-emitting diode is lightened; when the first preset interval is reached, the first light-emitting diode is lightened; when the light source is in a fourth preset interval, the fourth light emitting diode is lightened; and when the second preset interval is reached, the second light-emitting diode is lightened.
Optionally, the electric quantity detected by the battery electric quantity detection circuit accounts for the total quantity of the battery and is X, and the first preset interval is more than or equal to 0% and less than 20%; the second is predetermine the interval and is more than or equal to X20% and less than 50%, the third is predetermine the interval and is more than or equal to X50% and less than 75%, the fourth is predetermine the interval and is more than or equal to X75% and less than 100%, the fifth is predetermine the interval and is X =100%.
The utility model provides a bluetooth sound equipment, bluetooth sound equipment includes as above the battery indicator circuit.
Optionally, the bluetooth sound equipment further comprises a power amplifier chip and a radio chip, and the main control chip is connected with the power amplifier chip and the radio chip respectively.
The utility model discloses a set up main control chip, battery power detection circuitry and power indicator display circuit, battery power detection circuitry is connected with the battery, main control chip respectively with battery power detection circuitry and power indicator display circuit connection; the battery electric quantity detection circuit is connected with the battery and used for detecting working parameters of the battery and outputting an electric quantity detection signal and a charging detection signal; the main control chip is used for controlling the electric quantity indicator lamp display circuit to emit light according to the electric quantity detection signal, and is also used for controlling the battery electric quantity detection circuit to be in a starting state when the battery is determined to be in a charging state according to the charging detection signal. When the Bluetooth audio equipment is powered off, the battery power detection circuit cannot output a power detection signal to the main control chip, the battery power detection circuit cannot display the power, and cannot display the power. The main control chip controls the electric quantity indicator lamp display circuit to work according to the received electric quantity detection signal, and the electric quantity display function is completed. The utility model provides a bluetooth sound equipment can not show the problem of battery power under the power off state.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic diagram of a functional module according to an embodiment of the power display circuit of the present invention;
FIG. 2 is a schematic circuit diagram of an embodiment of the battery detection circuit of FIG. 1;
fig. 3 is a schematic circuit diagram of an embodiment of the indicator light display circuit in fig. 1.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name(s) |
| 10 | Battery with a |
20 | Battery |
| 30 | |
40 | Indicator lamp display circuit |
| U1 | First chip | VIN | Input foot |
| GND | Grounding pin | DONE | Full-electricity detection pin |
| CHRG | Charging detection pin | FB | Feedback foot |
| D1-D5 | First to fifth light emitting diodes | R1-R4 | First resistor-fourth resistor |
The realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, back, 8230; \8230;) are provided in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a battery indicator circuit can prolong electric core life among the parallelly connected group battery 10.
When the existing battery parallel structure is used, the internal resistance of each battery cell in the battery is different in actual use, so that the mutual charging condition among the battery cells can be caused, and the service life of the battery pack is influenced.
Referring to fig. 1, in an embodiment of the present invention, the power display circuit includes: 1. the device comprises a main control chip 30, a battery 10, a battery power detection circuit 20 and a power indicator lamp display circuit 40;
the battery power detection circuit 20 is connected to the battery 10, and configured to detect a working parameter of the battery 10 and output a power detection signal and a charging detection signal;
the main control chip 30 is respectively connected with the battery power detection circuit 20 and the power indicator display circuit 40, and the main control chip 30 is used for controlling the power indicator display circuit 40 to emit light according to the power detection signal;
the main control chip 30 is further configured to control the battery power detection circuit 20 to be in a power-on state when it is determined that the battery 10 is in the charging state according to the charging detection signal.
Specifically, when the battery power detection circuit 20 is in the shutdown state, the battery power detection circuit 20 cannot detect the power of the battery 10, the indicator lamp in the power indicator lamp display circuit 40 does not emit light, the power display circuit cannot operate, when the battery power detection circuit 20 is in the shutdown state, the battery power detection circuit 20 detects whether the battery 10 is in the charging state, when the battery 10 is detected to be in the charging state, the main control chip 30 mainly outputs a charging detection signal to the control chip, the main control chip 30 controls the battery power detection circuit 20 to be in the startup state, the indicator lamp in the power indicator lamp display circuit 40 emits light according to the power of the battery 10, and the power display circuit displays the power of the battery 10.
In the present embodiment, the battery power detection circuit 20 detects the operating parameters of the battery 10, including the power of the battery 10 and the charging state of the battery 10, wherein in the power-on state, the battery power detection circuit 20 detects the power of the battery 10 and the charging state of the battery 10, and in the power-off state, the battery power detection circuit 20 detects the charging state of the battery 10, and the power of the battery 10 cannot be detected. The battery power detection circuit 20 outputs a charging detection signal to the main control chip 30 after detecting the charging state of the battery 10, outputs different charging detection signals when detecting that the battery 10 is in the charging state and is not in the charging state, outputs a power detection signal after detecting the power of the battery 10 by the battery power detection circuit 20, and outputs different power detection signals when the power of the battery 10 detected by the battery power detection circuit 20 is in different values.
The main control chip 30 controls the battery power detection circuit 20 to start up according to the charging detection signal, and when the battery power detection circuit 20 outputs the charging detection signal to the main control chip 30 after detecting the charging state of the battery 10, if the battery power detection circuit 20 is shut down at this time, the main control chip 30 controls the battery power detection circuit 20 to start up. The main control chip 30 further controls the power indicator display circuit 40 to operate according to the power detection signal, when the battery power detection circuit 20 outputs the power detection signal to the main control chip 30 after detecting the power of the battery 10, the main control chip 30 controls the power indicator display circuit 40 to operate according to the received power detection signal, and the power indicator display circuit 40 operates in different states according to different power detection signals.
The theory of operation of this embodiment, main control chip 30 is through when battery power detection circuit 20 detects battery 10 and charges, control battery power detection circuit 20 starts, when realizing shutting down at bluetooth sound equipment, battery power detection circuit 20 accomplishes the detection to the battery 10 electric quantity, and to main control chip 30 output electric quantity detected signal, main control chip 30 shows signal control electric quantity pilot lamp display circuit 40 work according to the electric quantity, the completion is to the display function of battery 10 electric quantity, the realization is when battery 10 shuts down, the function that battery 10 electric quantity demonstration circuit can realize battery 10 electric quantity demonstration.
The during operation, when bluetooth sound equipment shut down and be in the charged state, battery power detection circuitry 20 detects that battery 10 is in the charged state, and main control chip 30 control battery power detection circuitry 20 starts, and battery power detection circuitry 20 detects the electric quantity of battery 10 and output electric quantity detection signal, and main control chip 30 controls electric quantity pilot lamp display circuit 40 work according to electric quantity detection signal.
The utility model discloses a set up main control chip 30, battery 10, battery power detection circuitry 20 and power indicator display circuit 40, battery power detection circuitry 20 is connected with battery 10, main control chip 30 is connected with battery power detection circuitry 20 and power indicator display circuit 40 respectively; the battery electric quantity detection circuit 20 is connected to the battery 10, and is configured to detect an operating parameter of the battery 10 and output an electric quantity detection signal and a charging detection signal; the main control chip 30 is used for controlling the electric quantity indicator light display circuit 40 to emit light according to the electric quantity detection signal, and the main control chip 30 is further used for controlling the battery electric quantity detection circuit 20 to be in a power-on state when the battery 10 is determined to be in a charging state according to the charging detection signal. During operation, the battery power detection circuit 20 detects real-time operating parameters of the battery 10, including detecting whether the power of the battery 10 and the battery 10 are in a charging state, the battery 10 circuit detection circuit outputs a power detection signal and a charging detection signal to the main control chip 30 according to the detected power of the battery 10 and the charging state of the battery 10, the main control chip 30 controls the power indicator display circuit 40 to emit light according to the power detection signal, the power indicator display circuit 40 emits light differently according to the power of the battery 10, the main control chip 30 determines whether the battery 10 is in the charging state according to the charging detection signal, when the battery 10 is detected in the charging state, the battery power detection circuit 20 is controlled to be in a power-on state, when the bluetooth audio device is powered off, the battery power detection circuit 20 cannot output the power detection signal to the main control chip 30, the power indicator display circuit 40 cannot display the power, the power of the bluetooth audio device cannot be displayed, and when the bluetooth audio device is powered off and in the charging state, the battery power detection circuit 20 outputs the charging detection signal to the main control chip 30 when the bluetooth audio device is powered on and the power detection circuit 20 is in the power-on state. The main control chip 30 controls the electric quantity indicator light display circuit 40 to work according to the received electric quantity detection signal, and the electric quantity display function is completed. The utility model provides a bluetooth sound equipment can not show the problem of battery 10 electric quantity under the power off state.
Referring to fig. 1, in an embodiment, the electric quantity display circuit further includes a charging switch circuit and a charging interface, the charging interface is connected to the battery 10, the charging interface is used for connecting an external power source, and the charging switch circuit is connected between the battery 10 and the charging interface, and is configured to control the external power source to charge the battery 10.
In this embodiment, the battery power detection circuit 20 detects the power of the battery 10 in the power-on state, and outputs the full power detection signal to the main control chip 30 when detecting that the power of the battery 10 is in the full power state, and the main control chip 30 controls the charging switch circuit to be turned off when receiving the full power detection signal, and controls the external power supply to cut off the charging of the battery 10, thereby avoiding the waste of the power of the external power supply and the over-charging state of the battery 10.
Referring to fig. 2, in an embodiment, the battery level detecting circuit 20 includes a first chip U1, a first light emitting diode D1, and a first resistor R1, where the first chip U1 includes an input pin VIN, a ground pin GND, an output pin, a charging detection pin CHRG, and a feedback pin FB, the input pin VIN is connected to a positive electrode of the battery 10, the ground pin GND is connected to a negative electrode of the battery 10, the output pin is connected to the main control chip 30, a cathode of the first light emitting diode D1 is respectively connected to the feedback pin FB and the battery 10, an anode of the first light emitting diode D1 is connected to a first end of the first resistor R1, and a second end of the first resistor R1 is connected to the charging detection pin CHRG.
In this embodiment, the first chip U1 is a detection chip of the battery 10, and detects whether the battery 10 is in a charging state, the first light emitting diode D1 is an indicator lamp for charge detection, and emits light when detecting that the battery 10 is in the charging state, an output pin of the first chip U1 is connected to the main control chip 30, OUT is a charge detection signal output end of the first chip U1, DC _5V is a control voltage of the main control chip 30 to the battery power detection circuit 20, when detecting that the battery 10 is in the charging state, the main control chip 30 outputs a control voltage of 5V to the first chip U1, the battery power detection circuit 20 is powered on, and the first light emitting diode D1 emits light.
Referring to fig. 2, the battery power detecting circuit 20 further includes a first triode, a second resistor R2, a third resistor R3, and a fourth resistor R4, the first chip U1 further includes a full-power detection pin DONE, the full-power detection pin DONE is connected to the first end of the second resistor R2, the second end of the second resistor R2 is connected to the first end of the third resistor R3, the first end of the fourth resistor R4, and the base of the first triode, the collector of the first triode is connected to the second end of the third resistor R3 and the battery 10, and the emitter of the first triode and the second end of the fourth resistor R4 are grounded.
In this embodiment, OUT is a full-power detection signal output pin of the first chip U1, and when the first chip U1 detects that the battery 10 is in a full-power state, the full-power detection signal is output to the main control chip 30, and when the main control chip 30 receives the full-power detection signal, the first chip U1 is controlled by DONE _ EN to control the battery 10 to no longer receive power supplied by the external device.
Referring to fig. 3, the power indicator circuit 40 includes a second light emitting diode D2, a third light emitting diode D3, a fourth light emitting diode D4 and a fifth light emitting diode D5, and when the power detected by the battery power detection circuit 20 is within a first preset interval, the second light emitting diode D2 flickers; when the first preset interval is reached, the first light-emitting diode D2 emits light; in a third preset interval, the third light-emitting diode D3 is lightened; when the current time is within a second preset interval, the second light emitting diode D4 emits light; and when the second preset interval is reached, the second light emitting diode D5 emits light.
In this embodiment, the main control chip 30 controls the electric quantity indicator light display circuit 40 to operate according to the received electric quantity detection signal, the received electric quantity detection signal has five types, the electric quantity indicator light display circuit 40 has five corresponding operating modes, the electric quantity of the battery 10 has five preset intervals, the detected electric quantity is in different preset intervals, and the electric quantity indicator light display circuit 40 has different operating modes in different preset intervals.
Referring to fig. 3, in an embodiment, the electric quantity detected by the battery electric quantity detection circuit 20 accounts for X of the total quantity of the battery 10, and the first preset interval is 0% to X <20%; the second preset interval is more than or equal to 20% and less than 50%, the third preset interval is more than or equal to 50% and less than 75%, the fourth preset interval is more than or equal to 75% and less than 100%, and the fifth preset interval is X =100%.
In the embodiment, the operation of the indicator lamp is controlled according to the ratio of the battery 10 to the total amount of the battery 10, when X is 0% to 20%, the second light emitting diode D2 flickers, when X is 20% to 50%, the second light emitting diode D2 lights, when X is 50% to 75%, the third light emitting diode D3 lights, when X is 75% to 100%, the fourth light emitting diode D4 lights, and when X =100%, the fifth light emitting diode D5 lights.
The utility model provides a bluetooth sound equipment.
This power supply unit includes as above the electric quantity display circuit, the above-mentioned embodiment is referred to this electric quantity display circuit's concrete structure, because the utility model discloses bluetooth sound equipment has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, no longer gives unnecessary details one by one here.
In an embodiment, the bluetooth sound equipment further includes a power amplifier chip and a radio chip, and the main control chip 30 is connected with the power amplifier chip and the radio chip respectively.
The radio chip is used for receiving audio signals, and the power amplifier chip is used for outputting audio signals of the Bluetooth sound equipment.
The above is only the optional embodiment of the present invention, and not therefore the patent scope of the present invention is limited, all under the idea of the present invention, the equivalent structure transformation made by the contents of the specification and the attached drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.
Claims (8)
1. An electrical quantity display circuit, comprising: the device comprises a main control chip, a battery power detection circuit and a power indicator lamp display circuit;
the battery electric quantity detection circuit is connected with the battery and used for detecting working parameters of the battery and outputting an electric quantity detection signal and a charging detection signal;
the main control chip is respectively connected with the battery electric quantity detection circuit and the electric quantity indicator lamp display circuit and is used for controlling the electric quantity indicator lamp display circuit to emit light according to the electric quantity detection signal;
the main control chip is further used for controlling the battery electric quantity detection circuit to be in a starting state when the battery is determined to be in a charging state according to the charging detection signal.
2. The power display circuit of claim 1, further comprising a charging switch circuit and a charging interface, wherein the charging interface is connected to the battery, the charging interface is used for connecting an external power source, and the charging switch circuit is connected between the battery and the charging interface and used for controlling the external power source to charge the battery.
3. The power display circuit of claim 2, wherein the battery power detection circuit comprises a first chip, a first light emitting diode and a first resistor, the first chip comprises an input pin, a ground pin, an output pin, a charge detection pin and a feedback pin, the input pin is connected to the positive electrode of the battery, the ground pin is connected to the negative electrode of the battery, the output pin is connected to the main control chip, the cathode of the first light emitting diode is connected to the feedback pin and the battery, respectively, the anode of the first light emitting diode is connected to a first end of the first resistor, and a second end of the first resistor is connected to the charge detection pin.
4. The power display circuit of claim 3, wherein the battery power detection circuit further comprises a first transistor, a second resistor, a third resistor, and a fourth resistor, the first chip further comprises a full-power detection pin, the full-power detection pin is connected to a first terminal of the second resistor, a second terminal of the second resistor is connected to a first terminal of the third resistor, a first terminal of the fourth resistor, and a base of the first transistor, respectively, a collector of the first transistor is connected to a second terminal of the third resistor and the battery, respectively, and an emitter of the first transistor and a second terminal of the fourth resistor are grounded.
5. The power display circuit of claim 4, wherein the power indicator light display circuit comprises a second light emitting diode, a third light emitting diode, a fourth light emitting diode and a fifth light emitting diode, wherein the second light emitting diode flashes when the power detected by the battery power detection circuit is within a first predetermined interval; when the first preset interval is reached, the first light-emitting diode is lightened; when the first preset interval is reached, the first light-emitting diode is lightened; when the LED is in a fourth preset interval, the fourth LED is lightened; and when the second preset interval is reached, the second light-emitting diode is lightened.
6. The power display circuit of claim 5, wherein the power detected by the battery power detection circuit is X, and the first predetermined interval is 0% to X <20%; the second preset interval is more than or equal to 20% and less than 50%, the third preset interval is more than or equal to 50% and less than 75%, the fourth preset interval is more than or equal to 75% and less than 100%, and the fifth preset interval is X =100%.
7. A Bluetooth audio device comprising the power display circuit of any one of claims 1 to 6.
8. The bluetooth audio device of claim 7, wherein the bluetooth audio device further comprises a power amplifier chip and a radio receiver chip, and the main control chip is connected to the power amplifier chip and the radio receiver chip respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220402581.1U CN217689317U (en) | 2022-02-25 | 2022-02-25 | Electric quantity display circuit and bluetooth sound equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220402581.1U CN217689317U (en) | 2022-02-25 | 2022-02-25 | Electric quantity display circuit and bluetooth sound equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217689317U true CN217689317U (en) | 2022-10-28 |
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ID=83728695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220402581.1U Active CN217689317U (en) | 2022-02-25 | 2022-02-25 | Electric quantity display circuit and bluetooth sound equipment |
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| Country | Link |
|---|---|
| CN (1) | CN217689317U (en) |
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2022
- 2022-02-25 CN CN202220402581.1U patent/CN217689317U/en active Active
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