CN113890158A - Battery energy-saving circuit and electronic equipment - Google Patents
Battery energy-saving circuit and electronic equipment Download PDFInfo
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- CN113890158A CN113890158A CN202111247587.2A CN202111247587A CN113890158A CN 113890158 A CN113890158 A CN 113890158A CN 202111247587 A CN202111247587 A CN 202111247587A CN 113890158 A CN113890158 A CN 113890158A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
Abstract
The embodiment of the application provides a battery energy-saving circuit, which comprises a control signal input module, a system control module, a voltage conversion module, a control switch detection module and a system driving module; when the control switch is triggered, the control signal input module outputs a first voltage; the system control module electrically connects the battery and the voltage conversion module; the voltage conversion module outputs a second voltage; when the control switch is triggered, the control switch detection module outputs a third voltage; when the control chip receives the second voltage and the third voltage, the system control module electrically connects the battery and the voltage conversion module. The embodiment of the application also provides electronic equipment comprising the battery energy-saving circuit. Therefore, the battery energy-saving circuit and the electronic device provided by the embodiment of the application can save the energy consumption of the battery.
Description
Technical Field
The application relates to the technical field of batteries, in particular to a battery energy-saving circuit and electronic equipment.
Background
With the rapid development of consumer electronics, lithium ion batteries are increasingly used. At present, lithium ion batteries are widely used in mobile phones, digital cameras, electric vehicles, dust collectors, floor sweeping robots, unmanned aerial vehicles and other electric devices.
In the prior art, a control switch is usually used to control a Micro Controller Unit (MCU) to perform operations such as turning on or off a battery, however, when the control switch controls the MCU to perform operations such as turning off the battery, the MCU can still communicate with the battery, thereby increasing the power consumption of the battery.
Disclosure of Invention
In view of the above problems, embodiments of the present application provide a battery saving circuit and an electronic device, which cut off power supply from a battery to a microcontroller unit through a control switch, and disconnect communication between the microcontroller unit and the battery, thereby saving energy consumption of the battery.
A first aspect of an embodiment of the present application provides a battery energy saving circuit, where the battery energy saving circuit includes a control signal input module, a system control module, a voltage conversion module, a control switch detection module, and a system driving module; the control signal input module is electrically connected with the control switch, and outputs a first voltage when the control switch is triggered; the system control module is electrically connected with the battery, the control signal input module and the voltage conversion module, and when the system control module receives a first voltage, the system control module enables the battery and the voltage conversion module to be electrically connected; the voltage conversion module is electrically connected with the control chip, and when the voltage conversion module is electrically connected with the battery, the voltage conversion module outputs a second voltage; the control switch detection module is electrically connected with the control switch and the control chip, and when the control switch is triggered, the control switch detection module outputs a third voltage; the system driving module is electrically connected with the control chip and the system control module, when the control chip receives the second voltage and the third voltage, the control chip outputs a fourth voltage, when the system driving module receives the fourth voltage, the system driving module outputs a fifth voltage, and when the system control module receives the fifth voltage, the system control module enables the battery and the voltage conversion module to be electrically connected.
In one possible implementation method, when the system control module receives the fifth voltage, the system control module outputs a system control signal, and the system control signal is used for controlling the battery to discharge.
In a possible implementation method, when the control switch is not triggered, the control switch detection module outputs a sixth voltage, and when the control chip receives the sixth voltage, the control chip outputs a seventh voltage.
In a possible implementation method, when the system driving module receives the seventh voltage, the system driving module outputs an eighth voltage, and when the system control module receives the eighth voltage, the system control module does not output the fifth voltage and the system control signal.
In a possible implementation method, the system control module includes a first switch, a first end of the first switch is electrically connected to the control signal input module, a second end of the first switch is electrically connected to the battery, and a third end of the first switch is electrically connected to the voltage conversion module.
In a possible implementation method, the first switch is a PNP type triode, a first end of the first switch is a base electrode of the triode, a second end of the first switch is an emitter electrode of the triode, and a third end of the first switch is a collector electrode of the triode.
In a possible implementation method, the voltage conversion module includes a conversion chip, an input end of the conversion chip is electrically connected to the third end of the first switch, and an output end of the conversion chip is electrically connected to the control chip.
In a possible implementation method, the control switch detection module includes a diode, a second resistor, and a third resistor, a cathode of the diode is electrically connected to the control switch, an anode of the diode is electrically connected to a first end of the second resistor and a first end of the third resistor, a second end of the second resistor receives a ninth voltage output by the external power source, and a second end of the third resistor is electrically connected to the control chip.
In a possible implementation method, the system driving module includes a fourth resistor, a fifth resistor, and a second switch, a first end of the fourth resistor is electrically connected to the control chip, a second end of the fourth resistor is electrically connected to a first end of the second switch, a second end of the second switch is grounded, a third end of the second switch is electrically connected to a first end of the fifth resistor, and a second end of the fifth resistor is electrically connected to a first end of the first switch.
A second aspect of an embodiment of the present application provides an electronic device, including: a battery; the control chip is electrically connected with the battery and used for controlling the state of the battery; and a battery saver circuit as claimed in any preceding claim.
Therefore, the battery energy-saving circuit and the electronic equipment provided by the embodiment of the application cut off the power supply of the battery to the microcontroller unit through the control switch, and disconnect the communication between the microcontroller unit and the battery, so that the energy consumption of the battery is saved.
Drawings
Fig. 1 is a functional block diagram of an electronic device according to an embodiment of the present application.
Fig. 2 is a functional block diagram of a battery saving circuit according to an embodiment of the present application.
Fig. 3 is a circuit schematic diagram of the battery saving circuit in fig. 2 when the control switch is triggered.
Fig. 4 is a circuit schematic diagram of the battery saving circuit in fig. 2 when the control switch is not triggered.
Fig. 5 is a schematic diagram of a test of the battery saving circuit in fig. 2.
Description of the main elements
Battery energy saving circuit 100
Control signal input module 40
Control switch detection module 50
Diode D1
Resistors R1-R8
Triode Q1, Q2
Capacitor C1-C5
Voltage conversion chip U1
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
In the embodiments of the present application, the terms "first", "second", and the like are used only for distinguishing different objects, and are not intended to indicate or imply relative importance, nor order to indicate or imply order. For example, a first application, a second application, etc. is used to distinguish one application from another application and not to describe a particular order of applications, and features defined as "first" and "second" may explicitly or implicitly include one or more of the features.
Referring to fig. 1, fig. 1 is a functional block diagram of an electronic device 200 according to an embodiment of the present application. As shown in fig. 1, the electronic device 200 includes a battery 60, a battery saving circuit 100, a control chip 70 and a control switch 80.
The battery 60 is electrically connected to the control chip 70, the battery 60 can supply power to the control chip 70 through the battery energy-saving circuit 100, and the control chip 70 can control the battery 60 to charge or discharge.
The battery saving circuit 100 is electrically connected to the battery 60, the control switch 80, and the control chip 70, and the battery saving circuit 100 can control whether the battery 60 supplies power to the control chip 70 according to the state of the control switch 80. In some embodiments, when the control switch 80 is triggered, the battery saving circuit 100 may electrically connect the battery 60 and the control chip 70, so that the battery 60 supplies power to the control chip 70, and when the control switch 80 is not triggered, the battery saving circuit 100 may electrically disconnect the battery 60 and the control chip 70, so that the battery 60 supplies power to the control chip 70, and thus, the power consumption of the battery 60 is saved.
Referring to fig. 2, fig. 2 is a functional block diagram of a battery saving circuit 100 according to an embodiment of the present disclosure. As shown in fig. 2, the battery saving circuit 100 includes a voltage conversion module 10, a system control module 20, a system driving module 30, a control signal input module 40, and a control switch detection module 50.
The system control module 20 is electrically connected to the battery 60, the control signal input module 40, and the voltage conversion module 10, when the control switch 80 is triggered, the control switch 80 outputs a first trigger signal, the control signal input module 40 can receive the first trigger signal and output a first voltage to the system control module 20 according to the first trigger signal, and when the system control module 20 receives the first voltage, the system control module 20 can conduct the electrical connection between the voltage conversion module 10 and the battery 60.
The voltage conversion module 10 is electrically connected to the control chip 70, and when the voltage conversion module 10 is electrically connected to the battery 60, the voltage conversion module 10 may convert the output voltage of the battery 60 into a second voltage and output the second voltage to the control chip 70 to supply power to the control chip 70.
In some embodiments, the voltage conversion module 10 may be a BUCK transformer, a BOOST transformer, a combination of a BUCK transformer and a BOOST transformer, and the like.
The control chip 70 is electrically connected to the control switch detection module 50 and the system driving module 30, when the control chip 70 is powered on, the control switch detection module 50 starts to operate, receives a first trigger signal output when the control switch 80 is triggered, and outputs a third voltage to the control chip 70 according to the first trigger signal, and the control chip 70 may output a fourth voltage to the system driving module 30 according to the third voltage.
The system driving module 30 is electrically connected to the system control module 20, and the system driving module 30 may output a fifth voltage to the system control module 20 according to the fourth voltage, where the fifth voltage is used to control the system control module 20 to continuously maintain the electrical connection between the battery 60 and the voltage conversion module 10, and is used to enable the system control module 20 to output a system control signal, and the system control signal is used to control the battery 60 to discharge.
When the control switch 80 is not triggered, the control switch 80 outputs a second trigger signal, the control switch detection module 50 receives the second trigger signal output when the control switch 80 is not triggered, and outputs a sixth voltage to the control chip 70 according to the second trigger signal, and the control chip 70 may output a seventh voltage to the system driving module 30 according to the sixth voltage.
The system driving module 30 may output an eighth voltage to the system control module 20 according to the seventh voltage, where the eighth voltage is used to control the system control module 20 to disconnect the electrical connection between the battery 60 and the voltage conversion module 10, and is used to enable the system control module 20 not to output a system control signal, so as to disconnect the power supply from the battery 60 to the control chip 70, thereby saving the energy consumption of the battery 60.
Referring to fig. 3, fig. 3 is a circuit diagram of the battery saving circuit 100 in fig. 2 when the control switch 80 is triggered. As shown in fig. 3, the control signal input module 40 includes a resistor R2, the system control module 20 includes a transistor Q1, the voltage conversion module 10 includes a resistor R1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, and a voltage conversion chip U1, the control switch detection module 50 includes a diode D1, a resistor R5, a resistor R7, and a capacitor R5, and the system driving module 30 includes a resistor R3, a resistor R4, a resistor R6, a resistor R8, and a transistor Q2.
In this embodiment, the transistor Q1 is a PNP transistor, the transistor Q2 is an NPN transistor, the transistor Q1 is a first switch, the transistor Q2 is a second switch, a base of the transistor Q1 is a first end of the first switch, an emitter of the transistor Q1 is a second end of the first switch, a collector of the transistor Q1 is a third end of the first switch, a base of the transistor Q2 is a first end of the second switch, an emitter of the transistor Q2 is a second end of the second switch, and a collector of the transistor Q1 is a third end of the second switch.
It is understood that, in some embodiments, the first switch and the second switch may also be other switching elements such as MOS transistors, controlled switches, three-terminal switches, switching circuits, switching chips, and the like, which is not limited in this application.
In this embodiment, a first end of the resistor R2 is electrically connected to a cathode of the diode D1 and receives the first trigger signal output by the control switch 80, a second end of the resistor R2 is electrically connected to a first end of the resistor R3, a first end of the resistor R4, and a base of the transistor Q1, an emitter of the transistor Q1 is electrically connected to a second end of the resistor R3 and receives the battery voltage output by the battery 60, and a collector of the transistor Q1 is electrically connected to a first end of the resistor R1 and outputs a system control signal.
A second terminal of the resistor R1 is electrically connected to the first terminal of the capacitor C1, the first terminal of the capacitor C2, the IN input terminal of the voltage conversion chip U1, and the EN input terminal of the voltage conversion chip U1, a second terminal of the capacitor C1 is electrically connected to the second terminal of the capacitor C2 and the GND first ground terminal of the voltage conversion chip U1, a second terminal of the capacitor C1 is grounded, an OUT output terminal of the voltage conversion chip U1 is electrically connected to the first terminal of the capacitor C3 and the first terminal of the capacitor C4, and outputs a second voltage to power the control chip 70, a GND second ground terminal of the voltage conversion chip U1 is electrically connected to the GND third ground terminal of the voltage conversion chip U1, the second terminal of the capacitor C3 and the second terminal of the capacitor C4, and a GND second ground terminal of the voltage conversion chip U1 is grounded.
The anode of the diode D1 is electrically connected to the first terminal of the resistor R5 and the first terminal of the resistor R7, and the second terminal of the resistor R5 receives a ninth voltage VCC, which may be provided by the voltage VCC output by the voltage converting module 10 in some embodiments. The second terminal of the resistor R7 is electrically connected to the first terminal of the capacitor C5 and outputs a third voltage to the control chip 70, and the second terminal of the capacitor C5 is grounded.
The first end of the resistor R6 receives the fourth voltage outputted by the control chip 70, the second end of the resistor R6 is electrically connected to the first end of the resistor R8 and the base of the transistor Q2, the emitter of the transistor Q2 is electrically connected to the second end of the resistor R8, the emitter of the transistor Q2 is grounded, and the collector of the transistor Q2 is electrically connected to the second end of the resistor R4.
When the control switch 80 is triggered, the control switch 80 outputs a first detection signal, the first detection signal is a low level signal, the base of the transistor Q1 can receive the first detection signal, so that the transistor Q1 is turned on, the emitter of the transistor Q1 can receive the battery voltage output by the battery 60 and transmit the battery voltage to the resistor R1 through the collector of the transistor Q1, and the battery voltage is a high level signal.
When the battery voltage is received by the resistor R1, the resistor R1 transmits the battery voltage to an IN input terminal of a voltage conversion chip U1, an EN input terminal of the voltage conversion chip U1, a first terminal of a capacitor C1 and a first terminal of a capacitor C2, wherein the capacitor C1 and the capacitor C2 are used for filtering the battery voltage, so that the stability of the battery voltage is improved, the IN input terminal of the voltage conversion chip U1 is used for receiving the battery voltage, and the EN input terminal of the voltage conversion chip U1 is an enable terminal for enabling the voltage conversion chip U1 to normally operate. The voltage conversion chip U1 may convert the battery voltage into a second voltage and output the second voltage to the control chip 70 through an OUT output terminal to supply power to the control chip 70. The voltage conversion chip U1 may further transmit the second voltage to a first terminal of a capacitor C3 and a first terminal of a capacitor C4, and the capacitor C3 and the capacitor C4 are used to filter the second voltage, so as to improve stability of the second voltage.
When the control chip 70 receives the second voltage, that is, the control chip 70 is powered on, at this time, the anode voltage of the diode D1 is pulled up to the ninth voltage VCC by the resistor R5, and the cathode of the diode D1 receives the first detection signal, so that the diode D1 is turned on, and the second terminal of the resistor R7 outputs the third voltage to the first terminal of the control chip 70 and the first terminal of the capacitor C5, and it can be understood that the capacitor C5 is used to improve the stability of the third voltage.
When the control chip 70 receives the third voltage, the control chip 70 may output a fourth voltage to the first terminal of the resistor R6, where the fourth voltage is a high-level signal, the resistor R6 transmits the fourth voltage to the base of the transistor Q2, the transistor Q2 is turned on, and pulls the first terminal of the resistor R4 to a low level, so as to keep the transistor Q1 in a conducting state, and continue to output a system control signal.
Referring to fig. 4, fig. 4 is a circuit diagram of the battery saving circuit 100 in fig. 2 when the control switch 80 is not triggered.
When the control switch 80 is not triggered, the control switch 80 outputs a second detection signal, the second detection signal is a high level signal, the cathode of the diode D1 receives the second detection signal, and the anode voltage of the diode D1 is pulled up to the ninth voltage VCC by the resistor R5, so that the diode D1 is turned off, the second terminal of the resistor R7 outputs a sixth voltage to the control chip 70 and the first terminal of the capacitor C5, and it can be understood that the capacitor C5 is used for filtering the sixth voltage, thereby improving the stability of the third voltage.
When the control chip 70 receives the sixth voltage, the control chip 70 may output a seventh voltage to the first end of the resistor R6, where the seventh voltage is a low level signal, the resistor R6 transmits the seventh voltage to the base of the transistor Q2, the transistor Q2 is turned off, and the first end of the resistor R4 changes to a high level, so that the transistor Q1 is turned off, the electrical connection between the battery 60 and the control chip 70 is disconnected, that is, the battery 60 no longer supplies power to the control chip 70, and the transistor Q1 no longer outputs a system control signal.
Referring to fig. 5, fig. 5 is a testing schematic diagram of the battery saving circuit 100 in fig. 2, and as shown in fig. 5, a tester may set a test point T1 at the base of the transistor Q1, a test point T2 at the anode of the diode D1, a test point T3 at the base of the transistor Q2, and a test point T4 at the collector of the transistor Q1, so as to test the operating state of the battery saving circuit 100.
Specifically, the tester may set the output voltage of the battery 60 to 21V and trigger the control switch 80, at which time, the tester may measure the voltage value of the test point T1 using a measuring device (e.g., a multimeter) and record as a first test voltage, and then, the tester may disconnect the triggering action of the control switch 80 and use the measurement period to measure the voltage value of the test point T1 again and record as a second test voltage. If the first test voltage is 0.6V and the second test voltage is 0V, the transistor Q1 is in a normal working state, and the control signal input module 40 and the system control module 20 are in a normal working state.
At this time, the tester may connect an external power supply to the test point T4, where the external power supply outputs 21V, and the tester may measure the OUT output terminal voltage of the voltage conversion chip U1 using the measurement device and record it as a third test voltage, and then the tester may disconnect the external power supply at the test point T4 and measure the OUT output terminal voltage of the voltage conversion chip U1 using the measurement device and record it as a fourth test voltage, and if the third test voltage is 3.3V and the fourth test voltage is 0V, the operating state of the voltage conversion module 10 is normal.
Next, the tester may trigger the control switch 80, and use the measurement device to measure the voltage of the test point T2 and the voltage of the test point T3, which are respectively recorded as a fifth test voltage and a sixth test voltage, at this time, the tester may disconnect the trigger action to the control switch 80, and use the measurement device to measure the voltage of the test point T2 and the voltage of the test point T3, which are respectively recorded as a seventh test voltage and an eighth test voltage, and if the fifth test voltage is 0V, the sixth test voltage is a high level, the seventh test voltage is 3.3V, and the eighth test voltage is 0V, the control switch detection module 50 is in a normal operating state.
When the test point T3 is at a high level, a tester can use the measurement device to measure the resistance between the test point T1 and the ground and the voltage value of the test point T4, and respectively record the resistance as a first resistance and a ninth test voltage; when the test point T3 is at a low level, the tester may use the measurement device to measure the resistance between the test point T1 and the ground and the voltage value of the test point T4 again, and record the resistance values as the second resistance value and the tenth test voltage, respectively, if the first resistance value is 20k Ω, the ninth test voltage is at a high level, the second resistance value is infinity, and the tenth test voltage is 0V, the operating state of the transistor Q2 is normal, and the operating state of the system driver module 30 is normal.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present application and are not used as limitations of the present application, and that suitable modifications and changes of the above embodiments are within the scope of the claims of the present application as long as they are within the spirit and scope of the present application.
Claims (10)
1. A battery energy-saving circuit is characterized by comprising a control signal input module, a system control module, a voltage conversion module, a control switch detection module and a system driving module;
the control signal input module is electrically connected to the control switch, and when the control switch is triggered, the control signal input module outputs a first voltage;
the system control module is electrically connected with a battery, the control signal input module and the voltage conversion module, and when the system control module receives the first voltage, the system control module enables the battery and the voltage conversion module to be electrically connected;
the voltage conversion module is electrically connected with the control chip, and when the voltage conversion module is electrically connected with the battery, the voltage conversion module outputs a second voltage;
the control switch detection module is electrically connected with the control switch and the control chip, and when the control switch is triggered, the control switch detection module outputs a third voltage;
the system driving module is electrically connected to the control chip and the system control module, when the control chip receives the second voltage and the third voltage, the control chip outputs a fourth voltage, when the system driving module receives the fourth voltage, the system driving module outputs a fifth voltage, and when the system control module receives the fifth voltage, the system control module electrically connects the battery and the voltage conversion module.
2. The battery saver circuit of claim 1 wherein:
when the system control module receives a fifth voltage, the system control module outputs a system control signal, and the system control signal is used for controlling the battery to discharge.
3. The battery saver circuit of claim 2 wherein:
when the control switch is not triggered, the control switch detection module outputs a sixth voltage, and when the control chip receives the sixth voltage, the control chip outputs a seventh voltage.
4. The battery saver circuit of claim 3 wherein:
when the system driving module receives the seventh voltage, the system driving module outputs an eighth voltage, and when the system control module receives the eighth voltage, the system control module does not output the fifth voltage and the system control signal.
5. The battery saver circuit of claim 1 wherein:
the system control module comprises a first switch, wherein a first end of the first switch is electrically connected to the control signal input module, a second end of the first switch is electrically connected to the battery, and a third end of the first switch is electrically connected to the voltage conversion module.
6. The battery saver circuit of claim 5 wherein:
the first switch is a PNP type triode, the first end of the first switch is the base electrode of the triode, the second end of the first switch is the emitting electrode of the triode, and the third end of the first switch is the collecting electrode of the triode.
7. The battery saver circuit of claim 6 wherein:
the voltage conversion module comprises a conversion chip, wherein the input end of the conversion chip is electrically connected to the third end of the first switch, and the output end of the conversion chip is electrically connected to the control chip.
8. The battery saver circuit of claim 7 wherein:
the control switch detection module comprises a diode, a second resistor and a third resistor, wherein the cathode of the diode is electrically connected to the control switch, the anode of the diode is electrically connected to the first end of the second resistor and the first end of the third resistor, the second end of the second resistor receives a ninth voltage output by an external power supply, and the second end of the third resistor is electrically connected to the control chip.
9. The battery saver circuit of claim 8 wherein:
the system driving module comprises a fourth resistor, a fifth resistor and a second switch, wherein a first end of the fourth resistor is electrically connected to the control chip, a second end of the fourth resistor is electrically connected to a first end of the second switch, a second end of the second switch is grounded, a third end of the second switch is electrically connected to a first end of the fifth resistor, and a second end of the fifth resistor is electrically connected to a first end of the first switch.
10. An electronic device, characterized in that the electronic device comprises:
a battery;
the control chip is electrically connected with the battery and used for controlling the state of the battery; and
a battery saver circuit according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111247587.2A CN113890158A (en) | 2021-10-26 | 2021-10-26 | Battery energy-saving circuit and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111247587.2A CN113890158A (en) | 2021-10-26 | 2021-10-26 | Battery energy-saving circuit and electronic equipment |
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| CN113890158A true CN113890158A (en) | 2022-01-04 |
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| CN202111247587.2A Pending CN113890158A (en) | 2021-10-26 | 2021-10-26 | Battery energy-saving circuit and electronic equipment |
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| CN101083400A (en) * | 2006-05-29 | 2007-12-05 | 联詠科技股份有限公司 | Power supply device of an electronic device |
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