CN106230077A - The power-supplying circuit of a kind of mobile terminal, method for controlling power supply and power management module - Google Patents

Abstract

The embodiment of the present invention discloses a power supply control circuit, a power supply control method, and a power management module of a mobile terminal. The power supply control circuit includes an external power input terminal, a battery, a voltage conversion module, a first switch, a main board, a power management module, a switch control module and a voltage stabilizing capacitor; the voltage comparison module is connected to the switch control module, the power management module is connected to the switch control module, and the switch control module is connected to the first switch, and is used for determining whether the voltage comparison module is input by the input terminal of the external power supply The external power supply satisfies the threshold condition, and the power management module outputs an instruction to connect the external power supply circuit, then the first switch is controlled to connect the external power supply circuit instead of being powered by the battery, which can reduce the situation that the battery is discharging while charging, and reduce the battery life. The number of charge and discharge times, prolong battery life. If not, control the first switch to connect the battery power supply circuit to ensure the continuity of power supply to the mobile terminal.

Description

A power supply control circuit, power supply control method, and power management of a mobile terminal module

technical field

The present invention relates to the technical field of terminals, in particular to a power supply control circuit, a power supply control method and a power management module of a mobile terminal.

Background technique

With the development of mobile terminal technology, mobile terminals, such as mobile phones and tablet computers, have increasingly powerful functions, gradually covering all aspects of people's lives, and people are increasingly dependent on mobile terminals. With the intensive use of mobile terminals by people and the limitation of the standby time of mobile terminals, such a situation often occurs that when a user is using a mobile terminal, the remaining power of the mobile terminal is low and cannot support the user to continue using it.

For this reason, users often use the mobile terminal while connecting the power cord. Power supply to support the user to continue to use.

However, the life of the existing rechargeable battery depends on the number of times of charge and discharge. When the battery is charged and discharged, the number of times of charge and discharge will be increased, the life of the battery will be reduced, and the battery capacity will decrease sharply over time, and even spontaneous combustion and explosion will occur. series of questions.

Contents of the invention

Embodiments of the present invention provide a power supply control circuit, a power supply control method, and a power management module of a mobile terminal, which are used to solve the problem of increasing battery charging and discharging times caused by connecting an external power source while the mobile terminal is running.

To achieve the above object, an aspect of the embodiments of the present invention provides a power supply control circuit for a mobile terminal, including: an external power input terminal, a battery, a voltage conversion module, a first switch, a main board, a power management module, a voltage comparison module, Switch control module and voltage stabilizing capacitor;

The input terminal of the external power supply is connected to the input terminal of the battery to form a battery charging circuit;

The external power input terminal is connected to the voltage conversion module, the voltage conversion module is connected to the main board through the first switch to form an external power supply circuit, and the battery is connected to the main board through the first switch connected to form a battery-powered circuit, and the first switch cannot simultaneously connect the external power supply circuit and the battery-powered circuit;

The intersection point after the first switch is electrically connected to the main board is grounded through the voltage stabilizing capacitor;

The external power input terminal is connected to the voltage comparison module, the voltage comparison module is connected to the switch control module, the power management module is connected to the switch control module, and the switch control module is connected to the first The switch is connected, and is used to control the first switch to connect if the voltage comparison module determines that the external power input by the external power input terminal meets the threshold condition, and the power management module outputs an instruction to turn on the external power supply circuit. If not, control the first switch to connect to the battery power supply circuit.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the first switch is a single-pole double-throw switch, and the switch control module is an AND circuit.

With reference to the first aspect or the first possible implementation of the first aspect, in the second possible implementation of the first aspect, the power supply control circuit further includes a low-pass filter, and the external power supply input terminal passes The low-pass filter is connected to the voltage comparison module.

With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the power management module is connected to the output terminal of the voltage comparison module, and is used as an output terminal of the voltage comparison module When the change frequency of the output result exceeds the frequency threshold, an instruction to turn on the battery power supply circuit is input to the switch control module.

Combining the first aspect, the first possible implementation of the first aspect, the second possible implementation of the first aspect, and any of the third possible implementations of the first aspect, in In a fourth possible implementation manner of the first aspect, the power supply control circuit further includes a second switch;

The input end of the external power supply is connected to the input end of the battery through the second switch;

The power management module is connected to the second switch, and is used to control the on-off of the second switch.

The second aspect of the embodiments of the present invention provides a method for controlling power supply of a mobile terminal, including:

The power management module judges whether the power supply of the external power supply connected to the mobile terminal exceeds the power supply threshold;

If yes, the power management module outputs an instruction to turn on the external power supply circuit.

With reference to the second aspect, in the first possible implementation manner of the second aspect, if the power supply does not exceed the power supply threshold, the method further includes:

The power management module determines whether the remaining battery power of the mobile terminal is greater than a power threshold;

If not, the power management module outputs an instruction to connect the battery-powered circuit, and connects an external power supply to the battery-powered circuit of the mobile terminal;

If yes, the power management module outputs an instruction to turn on the external power supply circuit, and turn off the circuit that the external power supply supplies power to the battery of the mobile terminal.

With reference to the first possible implementation of the second aspect, in the second possible implementation of the second aspect, if the remaining battery power of the mobile terminal is greater than the power threshold, the output of the power management module is connected to the external Before the instruction of the power supply circuit, and disconnecting the external power supply for the battery power supply circuit of the mobile terminal, the method also includes:

The power management module determines whether the power consumption of the mobile terminal is higher than a power consumption threshold;

If not, the power management module outputs an instruction to connect the battery-powered circuit, and connects an external power supply to the battery-powered circuit of the mobile terminal;

If yes, the power management module triggers the output of an instruction to turn on the external power supply circuit, and turn off the operation of the circuit powered by the external power supply for the battery of the mobile terminal.

A third aspect of the embodiments of the present invention provides a power management module, the power management module includes:

A first judging unit, configured to judge whether the power supply of the external power source accessed by the mobile terminal exceeds a power supply threshold;

The first output unit is configured to output an instruction to turn on the external power supply circuit when the first judging unit determines that the power supply of the external power supply connected to the mobile terminal exceeds a power supply threshold.

With reference to the third aspect, in a first possible implementation manner of the third aspect, if the power supply does not exceed a power supply threshold, the power management module further includes:

The second judging unit is configured to judge whether the remaining battery power of the mobile terminal is greater than the power threshold when the first judging unit judges that the power supply does not exceed the power threshold;

The second output unit is configured to output an instruction to turn on the battery power supply circuit when the second judging unit determines that the remaining power of the battery is not greater than the power threshold;

The first switching unit is configured to switch on an external power supply to supply power to the battery of the mobile terminal when the second judging unit determines that the remaining power of the battery is not greater than the power threshold;

The third output unit is configured to output an instruction to turn on the external power supply circuit when the second judging unit determines that the remaining power of the battery is greater than the power threshold;

A cut-off unit, configured to cut off the circuit for supplying power to the battery of the mobile terminal by an external power source when the second judging unit judges that the remaining power of the battery is greater than a power threshold.

With reference to the first possible implementation of the third aspect, in a second possible implementation of the third aspect, the power management module further includes:

A third judging unit, configured to judge whether the power consumption of the mobile terminal is higher than the power consumption threshold when the second judging unit judges that the remaining power of the battery is greater than the power threshold;

A fourth output unit, configured to output an instruction to turn on the battery power supply circuit when the third judging unit judges that the power consumption is not higher than the power consumption threshold;

The second turning on unit is used to turn on the circuit for supplying power to the battery of the mobile terminal by an external power supply when the third judging unit determines that the power consumption is not higher than the power consumption threshold;

A first trigger unit, configured to trigger the third output unit when the third judging unit determines that the power consumption is higher than the power consumption threshold;

The second triggering unit is configured to trigger the cut-off unit when the third judging unit determines that the power consumption is higher than the power consumption threshold.

It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages:

The power supply control circuit of the mobile terminal provided by the present invention includes an external power supply circuit and a battery power supply circuit. When the external power supply meets the threshold condition, the power supply management module can be used to control the connection of the external power supply circuit instead of being powered by the battery, which can reduce battery life. When charging and discharging at the same time, reduce the number of charging and discharging of the battery and prolong the battery life. When the external power supply does not meet the threshold condition, the battery power supply circuit can be directly connected to ensure the continuity of power supply to the mobile terminal.

Description of drawings

FIG. 1 is a schematic diagram of an embodiment of a power supply control circuit of a mobile terminal of the present invention;

2 is a schematic diagram of another embodiment of the power supply control circuit of the mobile terminal of the present invention;

3 is a schematic diagram of another embodiment of the power supply control circuit of the mobile terminal of the present invention;

FIG. 4 is a schematic diagram of an embodiment of a power supply control method for a mobile terminal according to the present invention;

5 is a schematic diagram of another embodiment of a power supply control method for a mobile terminal according to the present invention;

Fig. 6 is a schematic diagram of an embodiment of the power management module of the present invention;

FIG. 7 is a schematic diagram of another embodiment of the power management module of the present invention.

detailed description

Embodiments of the present invention provide a power supply control circuit, a power supply control method, and a power management module of a mobile terminal, which are used to reduce the situation that a battery is discharged while being charged, and prolong the life of the battery.

In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

The terms "first", "second", "third", "fourth", "fifth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a particular order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.

Please refer to FIG. 1, which is a schematic diagram of an embodiment of a power supply control circuit of a mobile terminal according to the present invention. The power supply control circuit of a mobile terminal according to an embodiment of the present invention may include:

External power input terminal 101 , battery 102 , voltage conversion module 103 , first switch 104 , main board 105 , power management module 106 , voltage comparison module 107 , switch control module 108 and voltage stabilizing capacitor 109 .

The external power input terminal 101 is connected to the input terminal of the battery 102 to form a battery charging circuit. The external power input terminal 101 is connected to the voltage conversion module 103, the voltage conversion module 103 is connected to the main board 105 through the first switch 104 to form an external power supply circuit, the battery 102 is connected to the main board 105 through the first switch 104 to form a battery power supply circuit, and The first switch 104 cannot connect the external power supply circuit and the battery power supply circuit at the same time, and the intersection point after the first switch 104 is electrically connected to the main board 105 is grounded through the voltage stabilizing capacitor 109 .

The external power input terminal 101 is connected to the voltage comparison module 107, the voltage comparison module 107 is connected to the switch control module 108, the power management module 106 is connected to the switch control module 108, and the switch control module 108 is connected to the first switch 104 for if the voltage comparison The module 107 judges that the external power supplied by the external power input terminal 101 satisfies the threshold condition, and the power management module 106 outputs an instruction to turn on the external power supply circuit, then controls the first switch 104 to turn on the external power supply circuit, if not, then controls the first switch 104 to turn on the external power supply circuit. A switch 104 is connected to the battery power supply circuit.

The solid line in the figure is the power supply circuit, and the dotted line is the control circuit.

Wherein, the capacitance of the voltage stabilizing capacitor 109 is relatively large, so the voltage on the voltage stabilizing capacitor 109 cannot be mutated, so that no voltage jitter will be generated during the switching process of the first switch 104, and the main board 105 is prevented from being powered off due to voltage jitter, resulting in The mobile terminal is powered off.

The voltage comparison module 107 can compare the voltage of the external power supply with the preset standard voltage range. If the voltage comparison module 107 determines that the voltage of the external power supply is within the preset standard voltage range, it can determine the external The power supply meets the threshold condition. If the voltage comparison module 107 determines that the voltage of the external power supply is not within the preset standard voltage range, it can determine that the external power input from the external power input terminal 101 does not meet the threshold condition. When the external power supply is suddenly disconnected, the voltage comparison module 107 will directly determine that the external power input from the external power supply input terminal 101 does not meet the threshold condition, causing the switch control module 108 to control the first switch 104 to switch on the battery power supply circuit, compared with software control , and the corresponding speed is faster to realize uninterrupted power supply.

In actual use, the first switch 104 can be a single-pole double-throw switch, and the first switch 104 can be in two states, only the external power supply circuit is connected, or only the battery power supply circuit is connected.

The switch control module 108 may be an AND gate circuit. Specifically, it may be that when the external power supply meets the threshold condition, the voltage comparison module 107 may output 1, and when the external power supply does not meet the threshold condition, the voltage comparison module 107 may output 0. The power management module 106 outputs 1, which may represent outputting an instruction to turn on the external power supply circuit, and the power management module 106 outputs 0, which may represent outputting an instruction to turn on the battery power supply circuit. Only when the power management module 106 and the voltage comparison module 107 output 1 at the same time, the AND circuit will output 1. In other cases, that is, when the power management module 106 outputs 1 and the voltage comparison module 107 outputs 0, or when the power management module When 106 outputs 0 and the voltage comparison module 107 outputs 1, or when the power management module 106 outputs 0 and the voltage comparison module 107 outputs 0, the AND circuit both outputs 0. When the AND circuit outputs 1, the first switch 104 is controlled to connect the external power supply circuit; when the AND circuit outputs 0, the first switch 104 is controlled to connect the battery power supply circuit. Then only when the external power supply satisfies the threshold condition and the power management module 106 outputs an instruction to turn on the external power supply circuit, the first switch 104 will turn on the external power supply circuit.

When the external power supply is connected to the external power input terminal 101, the voltage of the external power supply is prone to instability, and the voltage fluctuates violently. To solve this problem, preferably, please refer to FIG. 2 , the power supply control circuit can also include a low-pass filter 110 , the external power supply input terminal 101 is connected to the voltage comparison module 107 through the low-pass filter 110, the external power supply passes through the low-pass filter 110, which can filter out the high-frequency AC components, and then compares it with the standard voltage range through the voltage comparison module 107 , can avoid the situation that the first switch 104 switches back and forth caused by voltage instability.

In order to further filter out the low-frequency AC components in the external power supply and avoid the situation of the first switch 104 switching back and forth caused by voltage instability, preferably, please refer to FIG. 2 , the power management module 106 is connected to the output terminal of the voltage comparison module 107. When the change frequency of the output result of the voltage comparison module 107 exceeds the frequency threshold, an instruction to turn on the battery power supply circuit is input to the switch control module 108 . Specifically, the power management module 106 can start a timer to detect the output result of the voltage comparison module 107 within a preset time period. For example, whether the output result of the detection voltage comparison module 107 is 0 or 1, if the output The number of result changes exceeds the threshold, for example, if it changes twice within 2s, it is determined that the change frequency of the output result of the voltage comparison module 107 exceeds the frequency threshold, and the timer continues to be turned on. At this time, a pop-up window can be used to remind the user that the external power supply does not meet the requirements, and it is recommended to detect external power supply, and output an instruction to connect to the battery-powered circuit, so that even if the voltage of the external power supply meets the voltage threshold condition at a certain moment, the first switch 104 will also turn on the battery-powered circuit until the output detected within the preset duration As a result, when the number of changes does not exceed the threshold, the power management module 106 outputs an instruction to turn on the external power supply circuit, so that when the voltage of the external power supply meets the voltage threshold condition, the first switch 104 can turn on the external power supply circuit.

It often happens in life that the user uses a car charger or a mobile power supply to charge the mobile terminal during the use of the mobile terminal. Due to the low power supply of the car charger or mobile power supply, it is difficult to charge the battery while charging the mobile terminal. The motherboard of the terminal supplies power. Therefore, the power supply control circuit provided by the present invention may also include a second switch 111. Referring to FIG. The second switch 111 is connected to control the on-off of the second switch 111 . In this way, when the external power supply circuit is selected to be connected, the power management module 106 can control the second switch 111 to be turned off, so that the external power supply only supplies power to the main board 105 and does not charge the battery 102, ensuring the normal use of the mobile terminal by the user.

Based on the embodiments corresponding to FIG. 1 and FIG. 2, the present invention provides a power supply control method for a mobile terminal. Please refer to FIG. 4, which is a schematic diagram of an embodiment of the power supply control method for a mobile terminal according to the present invention. The power supply control method includes:

401. The power management module judges whether the power supply of the external power supply connected to the mobile terminal exceeds the power supply threshold, if yes, execute step 402, and if not, execute step 403;

The power management module can detect the power supply of the external power source connected to the mobile terminal, and judge whether the power supply exceeds the power supply threshold, if yes, perform step 402, and if not, perform step 403.

402. The power management module outputs an instruction to connect the external power supply circuit;

If the power management module determines that the power supply of the external power supply connected to the mobile terminal exceeds the power supply threshold, the power management module outputs an instruction to connect the external power supply circuit; when the voltage comparison module determines that the external power supply meets the threshold condition, the switch control module controls the first A switch connects the external power supply circuit, and the main board of the mobile terminal is powered by the external power supply.

403. Perform other operations.

If the power management module judges that the power supply of the external power supply connected to the mobile terminal does not exceed the power supply threshold, step 402 is not performed, and other operations are performed, such as outputting an instruction to connect the external power supply circuit, and continuing to determine the external power supply connected to the mobile terminal. Whether the power supply of the power supply exceeds the power supply threshold.

External power sources for charging mobile terminals usually include standard charging and mobile charging. Standard charging or indoor charging refers to charging mobile terminals using commercial power through standard chargers and data cables. Mobile charging generally includes using vehicle power supplies or mobile power supplies. Charge the mobile terminal. The external power supply of the standard charging has relatively high power, and can supply power to the main board of the mobile terminal while charging the battery. However, the power of the external power supply for mobile charging is small, and it is difficult to supply power for the motherboard of the mobile terminal independently while charging the battery, especially when the power consumption of the mobile terminal is relatively large.

Based on the embodiment corresponding to FIG. 3, the present invention provides a power supply control method that can be applied to standard charging and mobile charging. Please refer to FIG. 5, which is a schematic diagram of another embodiment of the power supply control method of the mobile terminal of the present invention. Methods include:

501. The power management module determines whether the power supply of the external power supply connected to the mobile terminal exceeds the power supply threshold, if yes, execute step 502, and if not, execute step 503;

The power management module can detect the power supply of the external power source connected to the mobile terminal, and judge whether the power supply exceeds the power supply threshold, if yes, execute step 502, and if not, execute step 503.

502. The power management module outputs an instruction to connect the external power supply circuit;

If the power management module determines that the power supply of the external power supply connected to the mobile terminal exceeds the power supply threshold, the power management module outputs an instruction to connect the external power supply circuit; when the voltage comparison module determines that the external power supply meets the threshold condition, the switch control module controls the first A switch connects the external power supply circuit, and the main board of the mobile terminal is powered by the external power supply. At this time, since the power supplied by the external power supply is relatively large, the external power supply charges the battery at the same time.

503. The power management module judges whether the remaining battery power of the mobile terminal is greater than the power threshold, if not, execute step 504, and if yes, execute step 506;

If the power management module judges that the power supply of the external power source connected to the mobile terminal does not exceed the power supply threshold, it can determine whether the remaining battery power of the mobile terminal is greater than the power threshold, if not, then perform step 504, and if so, then perform step 506.

504. The power management module outputs an instruction to connect the battery-powered circuit;

If the power management module determines that the remaining battery power of the mobile terminal is not greater than the power threshold, it outputs an instruction to turn on the battery power supply circuit. At this time, no matter what the output result of the voltage comparison module is, the switch control module will control the first switch to connect the battery power supply circuit, and the battery supplies power to the main board of the mobile terminal.

505. The power management module connects an external power supply to supply power to the battery of the mobile terminal;

If the power management module judges that the remaining battery power of the mobile terminal is not greater than the power threshold, the power management module turns on the second switch, so that the external power supply supplies power to the battery of the mobile terminal. If the second switch is already in the on state, step 505 means keeping the on state of the second switch.

It should be noted that step 505 may also be performed before step 504, as long as it is performed after step 503.

506. The power management module judges whether the power consumption of the mobile terminal is higher than the power consumption threshold, if not, execute step 507, and if yes, execute step 510;

If the power management module judges that the remaining power of the battery of the mobile terminal is greater than the power threshold, or when the external power supply charges the battery so that the remaining power of the battery is greater than the power threshold, the power management module can determine whether the power consumption of the mobile terminal is higher than the power consumption power threshold, if no, execute step 507, and if yes, execute step 510. Different programs run by mobile terminals have different power consumption. For example, GPS positioning and video playback consume more power, while browsing web pages consumes less power. Then, judging whether the power consumption of the mobile terminal is higher than the power consumption may also be judging whether the current application is a preset high power consumption application. Threshold The power threshold can be set by the user, or it can be a default value, and the specific value can be 65% of the full power. When the remaining battery power is greater than 65%, the power management module can judge whether the power consumption of the mobile terminal is higher than the power consumption threshold, and after obtaining the judgment result, it can also output the option of the power supply line to the user for selection by the user.

507. The power management module outputs an instruction to connect the battery-powered circuit;

If the power management module determines that the power consumption of the mobile terminal is not higher than the power consumption threshold, the power management module outputs an instruction to connect the battery power supply circuit. At this time, no matter what the output result of the voltage comparison module is, the switch control module will control the first switch to connect the battery power supply circuit, and the battery supplies power to the main board of the mobile terminal.

508. The power management module connects an external power supply to supply power to the battery of the mobile terminal;

If the power management module determines that the power consumption of the mobile terminal is not higher than the power consumption threshold, the power management module turns on the second switch, so that the external power supply supplies power to the battery of the mobile terminal. If the second switch is already in the on state, step 508 means keeping the on state of the second switch.

It should be noted that step 508 may also be performed before step 507, as long as it is performed after step 506.

509. The power management module outputs an instruction to connect the external power supply circuit;

If the power management module determines that the power consumption of the mobile terminal is not higher than the power consumption threshold, the power management module outputs an instruction to turn on the battery power supply circuit, and the switch control module controls the first switch to turn on the battery power supply circuit, and the battery is the power supply of the mobile terminal. Motherboard power supply. When the battery is fully charged, the power management module outputs an instruction to connect the external power supply circuit, which reduces the number of charging and discharging of the battery and prolongs its life.

510. The power management module outputs an instruction to connect the external power supply circuit;

If the power management module determines that the power consumption of the mobile terminal is higher than the power consumption threshold, the power management module outputs an instruction to connect the battery power supply circuit. Since the external power supply directly supplies power to the motherboard, the power supply efficiency is higher than that of the external power supply supplying power to the motherboard through batteries. Connect the external power supply circuit, and the external power supply directly supplies power to the motherboard. At this time, if the voltage comparison module determines that the external power supply meets the threshold condition, the switch control module controls the first switch to connect the external power supply circuit, so that the external power supply can directly supply power to the main board of the mobile terminal.

511. The power management module disconnects the circuit that the external power supply supplies power to the battery of the mobile terminal.

If the power management module determines that the power consumption of the mobile terminal is higher than the power consumption threshold, the power management module outputs an instruction to connect the battery power supply circuit; if the voltage comparison module determines that the external power supply meets the threshold condition, the switch control module controls the first switch to connect Through the external power supply circuit, the external power supply can directly supply power to the main board of the mobile terminal. Since the power supply of the external power supply is relatively small, in order to ensure that the external power supply supports applications with high power consumption to continue running, the power management module needs to disconnect the circuit that the external power supply supplies power to the battery of the mobile terminal. When the power consumption is lower than the power consumption threshold, or when the external power supply is switched to a power supply with a power supply greater than the power supply threshold, the power management module can connect the external power supply to the battery of the mobile terminal to supply power to the circuit.

The power supply control method of the mobile terminal in the embodiment of the present invention has been described above, and the power management module in the embodiment of the present invention will be described below.

Referring to Figure 6, an embodiment of the power management module in the embodiment of the present invention includes:

The first judging unit 601 is configured to judge whether the power supply of the external power source accessed by the mobile terminal exceeds the power supply power threshold;

The first output unit 602 is configured to output an instruction to turn on the external power supply circuit when the first judging unit 601 judges that the power supply of the external power supply connected to the mobile terminal exceeds the power supply threshold.

For the relationship among the units of the power management module in this embodiment, refer to the embodiment corresponding to FIG. 4 , and details are not repeated here.

Referring to Figure 7, an embodiment of the power management module in the embodiment of the present invention includes:

The first judging unit 701 is configured to judge whether the power supply of the external power source accessed by the mobile terminal exceeds the power supply power threshold.

The first output unit 702 is configured to output an instruction to turn on the external power supply circuit when the first judging unit 701 judges that the power supply of the external power supply connected to the mobile terminal exceeds the power supply threshold.

The second judging unit 703 is configured to judge whether the remaining battery power of the mobile terminal is greater than the power threshold when the first judging unit 701 judges that the power supply does not exceed the power threshold.

The second output unit 704 is configured to output an instruction to turn on the battery power supply circuit when the second judging unit 703 determines that the remaining power of the battery is not greater than the power threshold.

The first switching unit 705 is configured to switch on an external power supply to supply power to the battery of the mobile terminal when the second judging unit 703 determines that the remaining power of the battery is not greater than the power threshold.

The third judging unit 706 is configured to judge whether the power consumption of the mobile terminal is higher than the power consumption threshold when the second judging unit 703 judges that the remaining power of the battery is greater than the power threshold.

The fourth output unit 707 is configured to output an instruction to turn on the battery power supply circuit when the third judging unit 706 judges that the power consumption is not higher than the power consumption threshold.

The second turning on unit 708 is configured to turn on the circuit for powering the battery of the mobile terminal by an external power supply when the third judging unit 706 determines that the power consumption is not higher than the power consumption threshold.

The fifth output unit 709 is configured to output an instruction to turn on the external power supply circuit when the battery is fully charged.

The third output unit 710 is configured to output an instruction to turn on the external power supply circuit when the second judging unit determines that the remaining power of the battery is greater than the power threshold.

The cut-off unit 711 is configured to cut off the circuit for powering the battery of the mobile terminal by the external power source when the second judging unit judges that the remaining power of the battery is greater than the power threshold.

For the relationship between the units of the power management module in this embodiment, refer to the embodiment corresponding to FIG. 5 , and details will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still understand the foregoing The technical solutions recorded in each embodiment are modified, or some of the technical features are replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (11)

1. the power-supplying circuit of a mobile terminal, it is characterised in that including:

External power input, battery, voltage transformation module, the first switch, mainboard, power management module, voltage comparison module, Switch control module and electric capacity of voltage regulation；

Described external power input is connected with the input of described battery, forms battery charger；

Described external power input is connected with described voltage transformation module, and described voltage transformation module switchs by described first Being connected with described mainboard, form external power source power supply circuits, described battery is connected with described mainboard by described first switch, shape Become battery feed circuit, and described first switch cannot be also turned on described external power source power supply circuits and described battery is powered Circuit；

Joint after described first switch is electrically connected with described mainboard passes through described electric capacity of voltage regulation ground connection；

Described external power input is connected with described voltage comparison module, described voltage comparison module and described on-off control mould Block is connected, and described power management module is connected with described switch control module, described switch control module and described first switch It is connected, if judging that the external power source of described external power input input meets threshold condition for described voltage comparison module, And the output of described power management module connects the instruction of external power source power supply circuits, then outside controlling described in described first switch connection Portion's power-supplying circuit, is connected if it is not, then control battery feed circuit described in described first switch connection.

The power-supplying circuit of mobile terminal the most according to claim 1, it is characterised in that described first switch is hilted broadsword Commutator, described switch control module is AND circuit.

The power-supplying circuit of mobile terminal the most according to claim 1, it is characterised in that described power-supplying circuit is also Including low pass filter, described external power input is connected with described voltage comparison module by described low pass filter.

The power-supplying circuit of mobile terminal the most according to claim 3, it is characterised in that described power management module with The outfan of described voltage comparison module is connected, for the change frequency overfrequency threshold of the output result when voltage comparison module During value, connect the instruction of battery feed circuit to the input of described switch control module.

The power-supplying circuit of mobile terminal the most according to any one of claim 1 to 4, it is characterised in that described confession Electric control circuit also includes second switch；

Described external power input is connected with the input of described battery by described second switch；

Described power management module is connected with described second switch, for controlling the break-make of described second switch.

6. a method for controlling power supply for mobile terminal, confession based on the mobile terminal as according to any one of Claims 1-4 Electric control circuit, it is characterised in that described method includes:

Power management module judges whether the output power of the external power source that described mobile terminal accesses exceedes output power threshold value；

The instruction of external power source power supply circuits is connected in the output of the most described power management module.

The method for controlling power supply of mobile terminal the most according to claim 6, based on mobile terminal as claimed in claim 5 Power-supplying circuit, it is characterised in that if described output power is less than output power threshold value, described method also includes:

Described power management module judges that whether the battery dump energy of described mobile terminal is more than power threshold；

If it is not, the instruction of battery feed circuit is connected in the output of described power management module, and to connect external power source be described movement The battery powered circuit of terminal；

The instruction of external power source power supply circuits is connected in the output of the most described power management module, and to disconnect external power source be described The battery powered circuit of mobile terminal.

The method for controlling power supply of mobile terminal the most according to claim 7, it is characterised in that if the electricity of described mobile terminal Pond dump energy is more than power threshold, connects the instruction of external power source power supply circuits in the output of described power management module, and breaks Before opening the battery powered circuit that external power source is described mobile terminal, described method also includes:

Described power management module judges that whether the power consumption of described mobile terminal is higher than power consumption threshold value；

If it is not, the instruction of battery feed circuit is connected in the output of described power management module, and to connect external power source be described movement The battery powered circuit of terminal；

The most described power management module triggers output and connects the instruction of external power source power supply circuits, and disconnects external power source and be The operation of the battery powered circuit of described mobile terminal.

9. a power management module, power supply control based on the mobile terminal as according to any one of Claims 1-4 electricity Road, it is characterised in that described power management module includes:

First judging unit, for judging whether the output power of external power source that described mobile terminal accesses exceedes output power Threshold value；

First output unit, for judging the confession electric work of the external power source of described mobile terminal access when described first judging unit When rate exceedes output power threshold value, the instruction of external power source power supply circuits is connected in output.

Power management module the most according to claim 9, based on mobile terminal as claimed in claim 5 for automatically controlled Circuit processed, it is characterised in that if described output power is less than output power threshold value, described power management module also includes:

Second judging unit, is used for when described first judging unit judges described output power less than output power threshold value, Judge that whether the battery dump energy of described mobile terminal is more than power threshold；

Second output unit, is used for when described second judging unit judges that described battery dump energy is not more than power threshold, The instruction of battery feed circuit is connected in output；

First on-unit, is used for when described second judging unit judges that described battery dump energy is not more than power threshold, Connect the battery powered circuit that external power source is described mobile terminal；

3rd output unit, for when described second judging unit judges described battery dump energy more than power threshold, defeated Go out to connect the instruction of external power source power supply circuits；

Cutting unit, is used for when described second judging unit judges described battery dump energy more than power threshold, outside disconnection Portion's power supply is the battery powered circuit of described mobile terminal.

11. power management modules according to claim 10, it is characterised in that described power management module also includes:

3rd judging unit, for when described second judging unit judges described battery dump energy more than power threshold, sentencing Whether the power consumption of disconnected described mobile terminal is higher than power consumption threshold value；

When described 3rd judging unit, 4th output unit, for judging that described power consumption is not higher than described power consumption threshold value Time, the instruction of battery feed circuit is connected in output；

When described 3rd judging unit, second on-unit, for judging that described power consumption is not higher than described power consumption threshold value Time, connect the battery powered circuit that external power source is described mobile terminal；

When described 3rd judging unit, first trigger element, for judging that described power consumption is higher than described power consumption threshold value Time, trigger described 3rd output unit；

When described 3rd judging unit, second trigger element, for judging that described power consumption is higher than described power consumption threshold value Time, trigger described cutting unit.