CN218630125U - Power on/off electric quantity display circuit - Google Patents
Power on/off electric quantity display circuit Download PDFInfo
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- CN218630125U CN218630125U CN202222855413.0U CN202222855413U CN218630125U CN 218630125 U CN218630125 U CN 218630125U CN 202222855413 U CN202222855413 U CN 202222855413U CN 218630125 U CN218630125 U CN 218630125U
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Abstract
The utility model relates to a technical field that the electric quantity detected, more specifically relates to a switch on/off power display circuit. The intelligent power supply comprises a battery, a switch module, an enabling module, a control module and a display module for displaying the battery; the switch module comprises a power switch, a first triode and a first MOS tube; the enabling module comprises a second triode, a second MOS (metal oxide semiconductor) tube, a first resistor and a second resistor; the control module comprises a Bluetooth chip, the voltage input end of the Bluetooth chip is connected between the drain electrode of the second MOS tube and the first resistor, and the signal input end of the Bluetooth chip is connected between the first resistor and the second resistor; the display module at least comprises a first light emitting diode, the anode of the first light emitting diode is connected with the first voltage output end of the Bluetooth chip, and the cathode of the first light emitting diode is grounded. The utility model discloses a switch realizes the switching on and shutting down of circuit to come the electric quantity that shows the battery through software control bluetooth chip.
Description
Technical Field
The utility model relates to a technical field that the electric quantity detected, more specifically relates to a switch on/off power display circuit.
Background
Some electronic equipment do not have the electric quantity display function like bluetooth headset etc. and need look over the electric quantity on mobile terminal, the electric quantity of equipment can't audio-visually be known to the user. In the prior art, the circuit has various power display modes, but how to simply and intuitively complete power display of equipment such as a bluetooth headset still remains a big problem in the industry. Because devices such as bluetooth headsets do not need to display electric quantity every moment, how to display the electric quantity of the devices only when needed also becomes a current technical problem.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome among the above-mentioned background art the problem that can't only carry out the electric quantity display to this type of equipment when having the needs provides a switch on and off electric quantity display circuit.
In order to solve the technical problem, the technical scheme of the utility model as follows:
the utility model provides a startup and shutdown electric quantity display circuit, which comprises a battery, a switch module, an enabling module, a control module and a display module for displaying the battery;
the switch module comprises a power switch, a first triode and a first MOS (metal oxide semiconductor) tube, wherein the base electrode of the first triode is connected with the output end of the battery through the power switch, the collector electrode of the first triode is connected with the grid electrode of the first MOS tube, and the emitter electrode of the first triode is grounded; the source electrode of the first MOS tube is connected with the output end of the battery, and the drain electrode of the first MOS tube is connected with the input end of the enabling module; the enabling module comprises a second triode, a second MOS tube, a first resistor and a second resistor, wherein the base electrode of the second triode is connected with the drain electrode of the first MOS tube, the collector electrode of the second triode is connected with the grid electrode of the second MOS tube, and the emitter electrode of the second triode is grounded; the source electrode of the second MOS tube is connected with the output end of the battery, and the drain electrode is grounded through the first resistor and the second resistor in sequence; the control module comprises a Bluetooth chip, the voltage input end of the Bluetooth chip is connected between the drain electrode of the second MOS tube and the first resistor, and the signal input end of the Bluetooth chip is connected between the first resistor and the second resistor; the display module at least comprises a first light emitting diode, the anode of the first light emitting diode is connected with the first voltage output end of the Bluetooth chip, and the cathode of the first light emitting diode is grounded.
Preferably, the switch module further includes a third resistor and a fourth resistor, one end of the third resistor is connected to the output end of the power switch, and the other end of the third resistor is grounded through the fourth resistor; the initialization enabling end of the Bluetooth chip is connected between the first resistor and the second resistor.
Preferably, the power switch is a self-locking switch.
Preferably, the first triode and the second triode are both NPN type triodes; the first MOS tube and the second MOS tube are both P-channel MOS tubes.
Preferably, the model of the bluetooth chip is AC6951C.
Preferably, the display module further comprises a second light emitting diode, a third light emitting diode and a fourth light emitting diode, wherein the anode of the second light emitting diode is connected with the first voltage output end of the bluetooth chip, and the cathode of the second light emitting diode is grounded; the anode of the third light-emitting diode is connected with the first voltage output end of the Bluetooth chip, and the cathode of the third light-emitting diode is grounded; and the anode of the fourth light-emitting diode is connected with the first voltage output end of the Bluetooth chip, and the cathode of the fourth light-emitting diode is grounded.
Preferably, the switch module further includes a first diode, an anode of the first diode is connected to the output terminal of the power switch, and a cathode of the first diode is connected to the base of the first triode.
Preferably, the circuit further comprises a USB charging indication module, the USB charging indication module comprises a fifth resistor and a sixth resistor, one end of the fifth resistor is connected with the base electrode of the second triode, and the other end of the fifth resistor is grounded through the sixth resistor; and the USB detection enabling end of the Bluetooth chip is connected between the fifth resistor and the sixth resistor.
Preferably, the enabling module further comprises a second diode, an anode of the second diode is connected with the drain of the first MOS transistor, and a cathode of the second diode is connected with the base of the second triode.
Preferably, the bluetooth chip further comprises a bluetooth switch and a seventh resistor, one end of the bluetooth switch is grounded, and the other end of the bluetooth switch is connected with the first switch enabling end of the bluetooth chip through the seventh resistor; and the second switch enabling end of the Bluetooth switch is connected between the Bluetooth switch and the seventh resistor.
The beneficial effects are that:
the utility model discloses a switch realizes the switching on and shutting down of circuit to come the electric quantity that shows the battery through software control bluetooth chip. When pressing switch, switch on first MOS pipe through first triode, the second MOS pipe is switched on to the second triode, the bluetooth chip is given in some voltage power supply, another part is after the partial pressure effect of first resistance and second resistance again, output half voltage gives in the signal input part of bluetooth chip, later do the voltage setpoint on software and do the judgement, thereby play and can all realize real-time electric quantity detection at the switch on and off at every turn to the battery, a plurality of emitting diode are lighted to the corresponding voltage of controlling first voltage output end of rethread bluetooth chip, with the remaining electric quantity of early warning battery.
Drawings
Fig. 1 is a block diagram of the present invention.
Fig. 2 is a circuit structure diagram of the present invention.
Fig. 3 is a circuit configuration diagram of the switch module of the present invention.
Fig. 4 is a circuit diagram of the display module of the present invention.
Fig. 5 is a block diagram of a circuit structure of the enable module of the present invention.
Fig. 6 is a circuit structure diagram of the USB charging indication module of the present invention.
Fig. 7 is a circuit diagram of the bluetooth switch of the present invention.
Wherein: battery 10, switch module 20, enable module 30, detection module 40, display module 50.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention will be combined to clearly and completely describe the technical solutions of the embodiments of the present invention. The described embodiments are some, but not all embodiments of the invention.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1, the utility model provides a switch on and off electric quantity display circuit is used on bluetooth equipment, like bluetooth headset. The circuit includes a battery 10, a switch module 20, an enable module 30, a control module 40, and a display module 50.
Specifically, please refer to fig. 2. The switch module 20 includes a power switch J1, a first triode Q1, and a first MOS transistor T1, the base of the first triode Q1 is connected to the output terminal of the battery 10 through the power switch J1, the collector is connected to the gate of the first MOS transistor T1, and the emitter is grounded. The source of the first MOS transistor T1 is connected to the output terminal of the battery 10, and the drain is connected to the input terminal of the enabling module 30.
In the present embodiment, the switch module 20 is mainly used for turning on or off the working state of the circuit. The power switch J1 is a self-locking switch that rebounds after being pressed for a period of time. The first triode Q1 is an NPN type triode, and the first MOS tube T1 is a P channel MOS tube.
The enabling module 30 includes a second triode Q2, a second MOS transistor T2, a first resistor R1 and a second resistor R2, a base of the second triode Q2 is connected to a drain of the first MOS transistor T1, a collector is connected to a gate of the second MOS transistor T2, and an emitter is grounded. The source of the second MOS transistor T2 is connected to the output terminal of the battery 10, and the drain is grounded through the first resistor R1 and the second resistor R2 in sequence.
In the present embodiment, the enabling module 30 is mainly used for detecting the power of the battery 10 and providing the starting voltage and the voltage signal for the control module 40. The second triode Q2 is an NPN type triode, and the second MOS tube T2 is a P channel MOS tube. The first resistor R1 and the second resistor R2 have a voltage division function.
The display module 50 at least includes a first light emitting diode L1, an anode of the first light emitting diode L1 is connected to the first voltage output terminal U1_29 of the bluetooth chip U1, and a cathode thereof is grounded. The display module 50 is mainly used for displaying the power of the battery 10. First emitting diode L1 can set up to the red light, when bluetooth chip U1 detects that the voltage on enabling module 30 is in not enough scope value, first emitting diode L1 will the electric quantity, and early warning battery 10 electric quantity is not enough.
Through the structural connection of above-mentioned components and parts, the theory of operation of this embodiment can be: the lithium battery voltage BAT + is supplied to the collector of the first triode Q1 through the bias resistor of the first MOS transistor T1. When the power switch J1 is pressed, the lithium battery voltage BAT + is supplied to the base of the first triode Q1, the first triode Q1 is turned on, the gate voltage of the first MOS transistor T1 is pulled down, and thus the first MOS transistor T1 is turned on to supply power to the enabling module 30. After the enabling module 30 is conducted through the second triode Q2 and the second MOS transistor T2, a part of voltage supplies power to the bluetooth chip U1, and after the other part of the voltage is subjected to the voltage division effect of the first resistor R1 and the second resistor R2, half of the voltage is output to the signal input end U1_25 of the bluetooth chip U1, and then the voltage setting point is made on software for judgment, so that the real-time electric quantity detection can be realized for the battery 10 during each startup and shutdown, and the first light-emitting diode L1 is lightened by correspondingly controlling the voltage of the first voltage output end U1_29 through the bluetooth chip U1, so as to early warn that the electric quantity of the battery 10 is less than 25%.
The second embodiment:
on the basis of the first embodiment, the present embodiment is different in that:
as shown in fig. 3, the switch module 20 of the present embodiment further includes a third resistor R3 and a fourth resistor R4, one end of the third resistor R3 is connected to the output end of the power switch J1, and the other end is grounded through the fourth resistor R4. The initialization enabling end U1_45 of the Bluetooth chip U1 is connected between the first resistor R1 and the second resistor R2. The third resistor R3 and the fourth resistor R4 both function as voltage division. After switch J1 is pressed down, after the voltage passed through third resistance R3 and fourth resistance R4 partial pressure, bluetooth chip U1's initialization enable end U1_45 got the electricity to bluetooth chip U1 resets and begins work.
In this embodiment, the switch module 20 further includes a first diode D1, an anode of the first diode D1 is connected to the output terminal of the power switch J1, and a cathode of the first diode D1 is connected to the base of the first triode Q1. The first diode D1 mainly plays a role of voltage limiting protection to prevent the circuit from being damaged by reverse current impact.
The switch module 20 is further provided with a plurality of resistors, capacitors and electrolytic capacitors CE1, and the resistors, the capacitors and the electrolytic capacitors CE1 are respectively grounded. The resistor mainly plays a role of voltage division. The capacitor mainly plays a role in time delay, and prevents the power switch J1 from being turned on to enable the circuit to be electrified instantly to damage components and parts, so that POPO sound is weakened. The electrolytic capacitor CE1 mainly functions as a filter.
As shown in fig. 4, the display module 50 further includes a second light emitting diode L2, a third light emitting diode L3 and a fourth light emitting diode L4, wherein an anode of the second light emitting diode L2 is connected to the first voltage output terminal U1_29 of the bluetooth chip U1, and a cathode thereof is grounded; the anode of the third light-emitting diode L3 is connected with the first voltage output end U1_29 of the Bluetooth chip U1, and the cathode is grounded; the anode of the fourth light emitting diode L4 is connected to the first voltage output terminal U1_29 of the bluetooth chip U1, and the cathode is grounded. The second, third and fourth light emitting diodes L2, L3 and L4 may emit blue light to indicate the amount of charge of the battery 10.
Through the connection of above-mentioned components and parts, the theory of operation of this embodiment can be: the lithium battery voltage BAT + is supplied to the collector of the first triode Q1 through the bias resistor of the first MOS transistor T1. When a power switch J1 is pressed down, the voltage BAT + of the lithium battery passes through a first diode D1 and an electrolytic capacitor CE1 for filtering, then passes through a resistor, then goes through a capacitor for filtering and energy storage, is pulled down by the resistor, and finally is supplied to a base electrode of a first triode Q1; and after the first triode Q1 is conducted, the grid voltage of the second MOS tube T2 is pulled down, so that the second MOS tube T2 is conducted. Then, the power is supplied to a base electrode of a second triode Q2 through a second diode D2, after the second triode Q2 is conducted, the grid voltage of the second MOS tube T2 is reduced, after the second MOS tube T2 is conducted, the lithium battery voltage BAT + is supplied to a Bluetooth chip U1 through a part of the second MOS tube T2, the other part of the lithium battery voltage BAT + is divided through a first resistor R1 and a second resistor R2, half of the voltage is output to a signal input end U1_25 of the Bluetooth chip U1, and voltage setting points are judged on software, so that the real-time power detection of the battery 10 can be realized during each startup and shutdown, the corresponding light-emitting diode is lightened through the control of the Bluetooth chip U1 by the output voltage, a fourth light-emitting diode L4 is lightened to represent 100% of power, a third light-emitting diode L3 is lightened to represent 75% of power, the second light-emitting diode L2 is lightened to represent 50% of power, and the first light-emitting diode L1 is lightened to represent 25% of power; the power of the battery 10 can also be represented by the number of the light emitting diodes, for example, only the first light emitting diode L1 is turned on to represent 25% power, the first light emitting diode L1 and the second light emitting diode L2 are simultaneously turned on to represent 50% power, and so on.
Example three:
on the basis of the first embodiment or the second embodiment, the present embodiment is different in that:
as shown in fig. 5, the enabling module 30 in this embodiment further includes a second diode D2, an anode of the second diode D2 is connected to the drain of the first MOS transistor T1, and a cathode of the second diode D2 is connected to the base of the second transistor Q2. The second diode D2 mainly plays a role of voltage limiting protection to prevent the circuit from being damaged by reverse impact of current.
As shown in fig. 6, the present embodiment further includes a USB charging indication module, where the USB charging indication module includes a fifth resistor R5 and a sixth resistor R6, one end of the fifth resistor R5 is connected to the base of the second transistor Q2, and the other end is grounded through the sixth resistor R6. The USB detection enable terminal U1_18 of the bluetooth chip U1 is connected between the fifth resistor R5 and the sixth resistor R6. The fifth resistor R5 and the sixth resistor R6 mainly play a role in voltage division, the USB charging indication module is connected with the Bluetooth chip U1, and whether the battery 10 is in a charging state or not can be indicated by combined light emission of the light emitting diodes.
As shown in fig. 7, the bluetooth chip U1 further includes a bluetooth switch J2 and a seventh resistor R7, one end of the bluetooth switch J2 is grounded, and the other end is connected to the first switch enable end U1_35 of the bluetooth chip U1 through the seventh resistor R7; the second switch enable terminal U1_1 of the bluetooth switch J2 is connected between the bluetooth switch J2 and the seventh resistor R7. In this embodiment, the bluetooth switch J2 can control the bluetooth chip U1 to realize bluetooth connection with other devices through the bluetooth antenna.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature may be over, above or on the second feature including the first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the spirit and scope of the appended claims.
Claims (10)
1. A power on/off electric quantity display circuit is characterized by comprising a battery, a switch module, an enabling module, a control module and a display module for displaying the battery;
the switch module comprises a power switch, a first triode and a first MOS (metal oxide semiconductor) tube, wherein the base electrode of the first triode is connected with the output end of the battery through the power switch, the collector electrode of the first triode is connected with the grid electrode of the first MOS tube, and the emitter electrode of the first triode is grounded; the source electrode of the first MOS tube is connected with the output end of the battery, and the drain electrode of the first MOS tube is connected with the input end of the enabling module; the enabling module comprises a second triode, a second MOS tube, a first resistor and a second resistor, wherein the base electrode of the second triode is connected with the drain electrode of the first MOS tube, the collector electrode of the second triode is connected with the grid electrode of the second MOS tube, and the emitter electrode of the second triode is grounded; the source electrode of the second MOS tube is connected with the output end of the battery, and the drain electrode is grounded through the first resistor and the second resistor in sequence; the control module comprises a Bluetooth chip, the voltage input end of the Bluetooth chip is connected between the drain electrode of the second MOS tube and the first resistor, and the signal input end of the Bluetooth chip is connected between the first resistor and the second resistor; the display module at least comprises a first light emitting diode, the anode of the first light emitting diode is connected with the first voltage output end of the Bluetooth chip, and the cathode of the first light emitting diode is grounded.
2. The power on/off capacity display circuit according to claim 1, wherein the switch module further comprises a third resistor and a fourth resistor, one end of the third resistor is connected to the output terminal of the power switch, and the other end of the third resistor is grounded through the fourth resistor; the initialization enabling end of the Bluetooth chip is connected between the first resistor and the second resistor.
3. The power on/off capacity display circuit according to claim 1, wherein the power switch is a self-locking switch.
4. The power on/off capacity display circuit according to claim 1, wherein the first transistor and the second transistor are both NPN transistors; the first MOS tube and the second MOS tube are both P-channel MOS tubes.
5. The power on/off capacity display circuit of claim 1, wherein the bluetooth chip is of the type AC6951C.
6. The on-off power consumption display circuit according to claim 1, wherein the display module further comprises a second light emitting diode, a third light emitting diode and a fourth light emitting diode, an anode of the second light emitting diode is connected to the first voltage output terminal of the bluetooth chip, and a cathode of the second light emitting diode is grounded; the anode of the third light-emitting diode is connected with the first voltage output end of the Bluetooth chip, and the cathode of the third light-emitting diode is grounded; and the anode of the fourth light-emitting diode is connected with the first voltage output end of the Bluetooth chip, and the cathode of the fourth light-emitting diode is grounded.
7. The on-off power level display circuit of claim 1, wherein the switch module further comprises a first diode, an anode of the first diode is connected to the output terminal of the power switch, and a cathode of the first diode is connected to the base of the first transistor.
8. The power on/off capacity display circuit according to claim 1, wherein the circuit further comprises a USB charging indication module, the USB charging indication module comprises a fifth resistor and a sixth resistor, one end of the fifth resistor is connected to the base of the second triode, and the other end of the fifth resistor is grounded through the sixth resistor; and the USB detection enabling end of the Bluetooth chip is connected between the fifth resistor and the sixth resistor.
9. The power on/off capacity display circuit of claim 8, wherein the enabling module further comprises a second diode, an anode of the second diode is connected to the drain of the first MOS transistor, and a cathode of the second diode is connected to the base of the second transistor.
10. The power on/off capacity display circuit according to claim 1, wherein the bluetooth chip further comprises a bluetooth switch and a seventh resistor, one end of the bluetooth switch is grounded, and the other end of the bluetooth switch is connected with the first switch enable end of the bluetooth chip through the seventh resistor; and the second switch enabling end of the Bluetooth switch is connected between the Bluetooth switch and the seventh resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222855413.0U CN218630125U (en) | 2022-10-27 | 2022-10-27 | Power on/off electric quantity display circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222855413.0U CN218630125U (en) | 2022-10-27 | 2022-10-27 | Power on/off electric quantity display circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218630125U true CN218630125U (en) | 2023-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222855413.0U Active CN218630125U (en) | 2022-10-27 | 2022-10-27 | Power on/off electric quantity display circuit |
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| Country | Link |
|---|---|
| CN (1) | CN218630125U (en) |
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2022
- 2022-10-27 CN CN202222855413.0U patent/CN218630125U/en active Active
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