CN112886664A - Electronic device - Google Patents
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- CN112886664A CN112886664A CN202110142809.8A CN202110142809A CN112886664A CN 112886664 A CN112886664 A CN 112886664A CN 202110142809 A CN202110142809 A CN 202110142809A CN 112886664 A CN112886664 A CN 112886664A
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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
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Abstract
The embodiment of the invention discloses electronic equipment, which comprises a power supply module, wherein the power supply module comprises a power supply unit and a voltage control unit, the voltage control unit comprises a first switch, the first end of the first switch is the output end of the voltage control unit, and the first end of the first switch is connected with the first input end of the power supply unit; the input end of the processor is connected with the output end of the power management module, and the output end of the processor is connected with the second input end of the power supply unit; and the first end of the power-on key is connected with the grounding end, and the second end of the power-on key is respectively connected with the control end of the power management module and the input end of the voltage control unit.
Description
Technical Field
The present invention relates to the field of electronics, and more particularly, to an electronic device.
Background
At present, under the condition that most of electronic equipment is in a shutdown state, a battery always outputs, so that standby electric leakage of modules such as a power management module, a radio frequency power amplifier and an audio power amplifier in the electronic equipment exists, and the electric quantity of the battery of the electronic equipment is quickly consumed in the shutdown state.
Disclosure of Invention
The embodiment of the invention provides electronic equipment, which aims to solve the problem that in the prior art, when the electronic equipment is in a shutdown state, the battery loss is high due to electric leakage in a system.
In a first aspect, an embodiment of the present invention provides an electronic device, which includes:
the power supply module comprises a power supply unit and a voltage control unit, the voltage control unit comprises a first switch, the first end of the first switch is the output end of the voltage control unit, and the first end of the first switch is connected with the first input end of the power supply unit;
the input end of the power management unit is connected with the output end of the power supply unit;
the input end of the processor is connected with the output end of the power management module, and the output end of the processor is connected with the second input end of the power supply unit;
a first end of the power-on key is connected with a grounding end, and a second end of the power-on key is respectively connected with a control end of the power management module and an input end of the voltage control unit;
wherein the first switch is turned off when the electronic device is in a power-off state;
and the power supply unit controls the power supply unit to be disconnected with the power management module under the condition that the first switch is disconnected.
In an embodiment of the present invention, an electronic device is provided, where the electronic device is provided with a power module, a power management module, a processor, and a power-on key, where the power module includes a power supply unit and a voltage control unit, and the voltage control unit includes a first switch, and specifically, when the electronic device is in a power-off state, the first switch is turned off, and when the power supply unit is turned off, the power supply unit and the power management module are controlled to be turned off, that is, the power module stops supplying power to modules such as the power management module and the processor, so that an internal system of the electronic device does not leak electricity in a power-off stage, power consumption of the power module is greatly reduced, and standby time of the electronic device after power-off is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of a first electronic device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second electronic device according to an embodiment of the present invention;
description of reference numerals:
10-electronic equipment, 110-power supply module, 110-power management module, 130-processor, 140-start-up key, 150-third diode, 111-power supply unit, 112-voltage control unit, 1111-electricity meter chip, 1112-switch group, 1112-1-second switch 1112-2-third switch, 1113-electricity core group, 1113-1-first electricity core, 1113-2-second electricity core, 1114-third resistor, 1121-first switch, 1122-first resistor, 1123-second resistor, 1124-second diode and 1125-capacitor
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides electronic equipment which can be electronic equipment such as a mobile phone, a tablet computer, a notebook computer, a palm computer and wearable equipment.
Fig. 1 and fig. 2 are schematic structural diagrams of an electronic device according to an embodiment of the present invention. The electronic device 10 includes: a power module 110, a power management module 120, a processor 130, and a power-on key 140.
As shown in fig. 2, the voltage control unit 112 includes a first switch 1121, a first end of the first switch 1121 is an output end of the voltage control unit 112, and a first end of the first switch 1121 is connected to a first input end of the power supply unit 111.
The input terminal of the power management module 120 is connected to the output terminal of the power supply unit 111.
An input end of the processor 130 is connected to an output end of the power management module 120, and an output end of the processor 130 is connected to a second input end of the power supply unit 111.
The first end of the power-on key 140 is connected to the ground end, and the second end of the power-on key 140 is connected to the control end of the power management module 130 and the input end of the voltage control unit 112, respectively.
In this embodiment, the power module 110 is generally a battery, which may be a high voltage battery, for example, the battery may provide 9V, and the voltage provided by the battery is referred to as VBAT voltage (power voltage).
In this embodiment, as shown in fig. 2, when the electronic device is in a power-off state, the first switch 1121 is turned off, and when the first switch 1121 is turned off, the power supply unit 111 controls the power supply unit 111 to be turned off from the power management module 120.
According to the electronic device provided by the embodiment of the invention, under the condition that the electronic device is in a shutdown state, the first switch is disconnected, and the power supply unit controls the power supply unit to be disconnected from the power management module under the condition that the first switch is disconnected, namely, the power supply module stops supplying power to the power management module, the processor and other modules, so that an internal system of the electronic device does not leak electricity in the shutdown stage, the power consumption is greatly reduced, the power consumption of the power supply module is greatly reduced, and the standby time of the electronic device after shutdown is prolonged.
In one embodiment, as shown in fig. 2, the power supply unit 111 includes a fuel gauge chip 1111 and a switch bank 1112.
The fuel gauge chip 1111 includes a signal input pin IIC (Inter-Integrated Circuit), an activation pin PACK and a signal output pin MOS _ CTRL, wherein the activation pin PACK is a first input terminal of the power supply unit 111, the signal input pin IIC is a second input terminal of the power supply unit 111, that is, the signal input pin IIC is connected to an output terminal of the processor 130, and the activation pin PACK is connected to a first terminal of the first switch 1121.
For example, when a high-level signal is input to the active pin PACK, the fuel gauge chip 1111 is in an active state, that is, the fuel gauge chip 1111 is in a normal operating state, when a low-level signal is input to the active pin PACK, the fuel gauge chip 1111 is in an inactive state, that is, the fuel gauge chip 1111 is in a sleep state, and when the fuel gauge chip 1111 is in an inactive state, the fuel gauge chip 1111 does not have an active voltage, and power consumption is reduced.
The switch group 1112 comprises a second switch 1112-1 and a third switch 1112-2, a control end of the second switch 1112-1 and a control end of the third switch 1112-2 are connected with a signal output pin MOS _ CTRL of the fuel gauge chip 1111, a second end of the second switch 1112-1 is connected with a first end of the third switch 1112-2, a second end of the third switch 1112-2 is connected with an input end of the power management module 120, and a second end of the third switch 1112-2 is an output end of the power supply unit 111.
In this embodiment, the second switch 1112-1 and the third switch 1112-2 may be Metal-Oxide-Semiconductor Field-effect transistors (MOSFETs), and the switch set 1112 may be referred to as back-to-back MOSFETs to increase the current. For example, the second switch 1112-1 and the third switch 1112-2 may both be NMOS transistors.
In this embodiment, the electronic device is in a power-on state, when the power management module 120 detects that the power key 140 executes a power-off action, the power management module sends a power-off signal to the processor 130, and after receiving the power-off signal, the processor 130 controls the second switch 1112-1 and the third switch 1112-2 to be turned off through the electricity meter chip 1111; and, the fuel gauge chip 1111 is controlled to enter the sleep state.
In a specific example, when the electronic device is in a power-on state, the user presses the power-on key 140 for a long time, the power management module 120 sends a power-off signal to the processor 130 when detecting that the user presses the power-on key for a long time, the processor 130 sends a control signal to the fuel gauge chip 1111 through the signal input pin IIC of the fuel gauge chip 1111 based on the I2C protocol after receiving the power-off signal, the fuel gauge chip 1111 outputs a low level signal through the signal output pin MOS _ CTRL to control the second switch 1112-1 and the third switch 1112-2 to be turned off, where the battery output VBAT + is turned off, and the power module 110 (battery) stops supplying voltage to the power management module 120.
Meanwhile, in the case where the second switch 1112-1 and the third switch 1112-2 are turned off, the active pin PACK of the fuel gauge chip 1111 inputs a low level signal, and the fuel gauge chip 1111 immediately enters a sleep state, i.e., an inactive state, and since the fuel gauge chip 1111 does not have an active voltage in the inactive state, power consumption is reduced. In the assembling process of the electronic equipment, the output power of the battery is closed, so that the power supply cannot shake when the battery is buckled, and the abnormal work of the chip caused by shaking is avoided.
In one embodiment, power supply unit 111 further includes a battery pack 1113, and battery pack 1113 includes a first battery cell 1113-1 and a second battery cell 1113-2 connected in series.
One end of the first cell 1113-1 is connected to the ground, the other end of the first cell 1113-1 is connected to one end of the second cell 1113-2, and the other end of the second cell 1113-2 is connected to the first end of the second switch 1112-1.
In this embodiment, the power module 110 (battery) can output a larger charging power by arranging the two electric cores in series.
In one embodiment, the voltage control unit 112 further includes a first resistor 1122, a second resistor 1123, and a first diode 1124.
An anode of the first diode 1123 is connected to one end of the second electrical core 1113-2, a cathode of the first diode 112 is connected to the second end of the first switch 1121 and the first end of the first resistor 1122, the second end of the first resistor 1122 is connected to the control end of the first switch 1121 and the first end 1123 of the second resistor, the second end of the second resistor 1123 is connected to the second end of the power-on key 140, and the second end of the second resistor 1123 is an input end of the voltage control unit 112.
In this embodiment, the first switch 1121 is a PMOS transistor switch, a source of the PMOS transistor switch is connected to a cathode of the first diode 1124, a drain of the PMOS transistor switch is connected to an active pin PACK of the fuel gauge chip 1111, and a gate of the PMOS transistor switch is connected to the second end of the first resistor 1122.
In a specific example, when the electronic device is in the power-off state, the power-on key 140 is turned off, where the voltage of the source S of the PMOS transistor switch is the same as the voltage of the gate G, and is equal to the difference between the voltage of the core group 1113 and the forward voltage drop of the first diode 1124, i.e., the voltage difference between the source S and the gate G of the PMOS transistor switch is zero, the PMOS transistor switch is turned off, where the active pin PACK of the fuel gauge chip 1111 inputs a low level signal, the fuel gauge chip 1111 enters the sleep state, i.e., the inactive state, and outputs a low level signal through the signal output pin MOS _ CTRL to control the second switch 1112-1 and the third switch 1112-2 to turn off, where the battery output VBAT + is turned off, and the power module 110 (battery) stops providing the voltage to the power management module 120.
That is to say, when the electronic device is in the shutdown state, the fuel gauge chip 1111 is in the inactive state, and there is no leakage phenomenon, and meanwhile, since the battery output VBAT + is turned off (the battery does not output), the power management module 120, the processor 130, and other modules such as the radio frequency power amplifier and the audio power amplifier also do not have the leakage phenomenon, so that the electronic device does not have leakage in the shutdown state as a whole, the electric quantity retention time in the shutdown state of the electronic device is prolonged, and the power consumption is reduced.
In one embodiment, the electronic device further includes a second diode 1124, an anode of the second diode 1124 is connected to the second terminal of the third switch 1112-2, and a cathode of the second diode 1124 is connected to the active pin PACK of the electricity meter chip 1111 and the first terminal of the first switch 1121, respectively.
In a specific example, when the electronic device is in a power-off state, a power-on action is performed on the electronic device, for example, a user presses the power-on key 140 for a long time, the power-on key 140 is closed, the first resistor 1122 and the second resistor 1123 constitute a voltage divider circuit, the gate voltage G of the first switch 1121 is lower than the source voltage S, the first switch 1121 is turned on, here, the voltage of the activation pin PACK of the electricity meter chip 1111 is approximately equal to the difference between the voltage of the electricity core group 1113 and the forward voltage drop of the first diode 1124, the first switch 1121 is turned on, the activation pin PACK of the electricity meter chip 1111 inputs a high-level signal, the electricity meter chip 1111 is activated, and outputs a high-level signal through the signal output pin MOS _ CTRL to control the second switch 1112-1 and the third switch 1112-2 to be turned on, and the battery output VBAT + is turned on, that is, the power supply module 110 (battery) normally supplies power to the.
Meanwhile, after the electronic device is turned on, the user releases the power-on key 140, the power-on key 140 is turned off, the VBAT + voltage maintains the activation pin of the fuel gauge chip to continuously input the high level signal through the second diode 1124, that is, the fuel gauge chip 1111 is in the activation state in the power-on state, and continuously outputs the high level signal through the signal output pin MOS _ CTRL to control the second switch 1112-1 and the third switch 1112-2 to be turned on, and the power module 110 (battery) continuously supplies power to the power management module 120.
In one embodiment, the voltage control unit further includes a capacitor 1125, a first terminal of the capacitor 1125 is connected to a first terminal of the second resistor 1123, and a second terminal of the capacitor 153 is connected to a ground terminal.
In a specific example, in the case that the electronic device is in the power-off state, since the power-on key 140 is turned off, the voltage of the capacitor 1125 is equal to the voltage of the gate G of the first switch 1121, and the voltage of the gate G of the first switch 1121 is equal to the difference between the voltage of the electric core group 1113 and the forward voltage drop of the first diode 112. At this time, when the electronic device performs a power-on operation, that is, the user presses the power-on key 140 for a long time, the PWRKEY is grounded, the PWRKEY may be a connector, and the voltage of the capacitor 1125 is slowly discharged through the second resistor 1123 until the first switch 1121 is turned on, so that the short pressing and shaking of the power-on key 140 does not trigger the first switch 1121 to be turned on, thereby achieving the function of key shaking prevention.
In one embodiment, the electronic device further includes a third diode 150, an anode of the third diode 150 is connected to the control terminal of the power management module 120, and a cathode of the third diode 150 is connected to the second terminal of the power-on key 140.
In one embodiment, the power supply unit 111 further includes a third resistor 1114, and the third resistor 1114 is connected in parallel with the fuel gauge chip 1111.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "comprising" is used to specify the presence of stated features, integers, steps, operations, elements, components, operations.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. An electronic device, comprising:
the power supply module comprises a power supply unit and a voltage control unit, the voltage control unit comprises a first switch, the first end of the first switch is the output end of the voltage control unit, and the first end of the first switch is connected with the first input end of the power supply unit;
the input end of the power supply management module is connected with the output end of the power supply unit;
the input end of the processor is connected with the output end of the power management module, and the output end of the processor is connected with the second input end of the power supply unit;
a first end of the power-on key is connected with a grounding end, and a second end of the power-on key is respectively connected with a control end of the power management module and an input end of the voltage control unit;
wherein the first switch is turned off when the electronic device is in a power-off state;
and the power supply unit controls the power supply unit to be disconnected with the power management module under the condition that the first switch is disconnected.
2. The electronic device according to claim 1, wherein the power supply unit includes:
the fuel gauge chip comprises a signal input pin, an activation pin and a signal output pin, the signal input pin is connected with the output end of the processor, and the activation pin is connected with the first end of the first switch;
the switch group comprises a second switch and a third switch, the control end of the second switch and the control end of the third switch are connected with the signal output pin, the second end of the second switch is connected with the first end of the third switch, and the second end of the third switch is connected with the input end of the power management module.
3. The electronic device of claim 2, wherein the power supply unit further comprises a battery pack,
the battery pack comprises a first battery cell and a second battery cell which are connected in series.
4. The electronic device of claim 3, wherein the voltage control unit further comprises a first resistor, a second resistor, and a first diode;
the anode of the first diode is connected with one end of the second battery cell, the cathode of the first diode is respectively connected with the second end of the first switch and the first end of the first resistor, the second end of the first resistor is respectively connected with the control end of the first switch and the first end of the second resistor, and the second end of the second resistor is connected with the second end of the power-on key.
5. The electronic device of claim 4, further comprising a capacitor,
the first end of the capacitor is connected with the first end of the second resistor, and the second end of the capacitor is connected with the grounding end.
6. The electronic device of claim 4, further comprising a second diode,
and the anode of the second diode is connected with the second end of the third switch, and the cathode of the second diode is respectively connected with the activation pin and the first end of the first switch.
7. The electronic device of claim 1, further comprising a third diode,
and the anode of the third diode is connected with the control end of the power management module, and the cathode of the third diode is connected with the second end of the start-up key.
8. The electronic device of claim 4, wherein the first switch is a PMOS transistor switch,
the source electrode of the PMOS tube switch is connected with the cathode of the first diode, the drain electrode of the PMOS tube switch is connected with the activation pin, and the grid electrode of the PMOS tube switch is connected with the second end of the first resistor.
9. The electronic device of claim 2, wherein the second switch and the third switch are both NMOS transistor switches.
10. The electronic device according to claim 1, wherein the power supply unit further includes a third resistor connected in parallel with the fuel gauge chip.
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| CN202110142809.8A CN112886664A (en) | 2021-02-02 | 2021-02-02 | Electronic device |
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| CN202110142809.8A CN112886664A (en) | 2021-02-02 | 2021-02-02 | Electronic device |
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