CN107291204B - Power supply control method and device and electronic equipment - Google Patents

The power supply control method is applied to the electronic equipment with a plurality of power supplies, the electronic equipment is provided with a plurality of components, the power supplies are installed in the components, the components can be independently used, for example, the

5 of a notebook computer can be separated from the

7 and is independently used as a tablet computer by a user. The method of mounting a plurality of power sources on an electronic device, each component being provided with a power source, enables the components to be powered by the respective power source when the components are separated, and also enables the electronic device to be powered by a suitable power source when the separated components are combined together for use as the integrated electronic device, as shown in fig. 1, the method comprising:

And S23, controlling the power supply to output power to the components by controlling the on or off of the current in the control unit. Specifically, when the electronic device is detached or combined, the current flow direction of the control unit can be controlled according to the actual situation of the power supply in each electronic device (for example, the situation that the power supply is located on which component after the electronic device is operated or a certain power supply cannot be found), so as to control the power supply to output power to the components, for example, control the power supply to perform power switching on the

5 of the notebook computer, and prevent the situation that the

5 is suddenly powered off when the

5 operates independently.

In an embodiment of the present invention, with reference to fig. 4 and 5, the electronic device includes a

6 and a

8 respectively mounted on different components, and the

6 and the

8 may be respectively mounted on different components, for example, the electronic device is a notebook computer, the

6 may be mounted in the

5 of the notebook computer, and the

8 may be mounted in the

7 of the notebook computer. The control circuit has a

12, a

13, a

14, a

15, a

16, a

17 and a

18.

The

12 and the

13 are connected in series to form a first control circuit, one side of the first control circuit is connected in series to the

6, and the other side of the first control circuit is connected in series to a power receiving end 11(VSYS) of the electronic device through a

18;

the

14 and the

15 are connected in series to form a second control circuit, one side of the second control circuit is connected in series to the

8, and the other side is connected in series to the power receiving end 11 through a

18;

the

16 and the

17 are connected in series to form a third control circuit, one side of which is connected in series to the

8 and the other side of which is connected in series to the power receiving terminal 11 or connected to the power receiving terminal 11 through another device (charging section 4).

The operation of the control unit will be further described with reference to fig. 5 by using an embodiment, the electronic device is a notebook computer, the

6 can be installed in the

5 of the notebook computer, and the

8 can be installed in the

7 of the notebook computer. At first, the

5 is electrically connected to the

7, the notebook computer is used as a whole, the

8 supplies power to the whole notebook computer, and the user separates the

5 from the

7 during the operation of the notebook computer to use the

5 as a tablet computer, which needs to be switched to the

6 to supply power to the

5. The former state of the process is that the FET1 in the

12 and the FET2 in the

13 are both in the on state, even if the

8 is interrupted momentarily, the FET5 in the

16 and the FET6 in the

17 are both off, the voltage of the power receiving terminal 11(VSYS) drops below the voltage of the

6 because the

8 is not supplying power, the diode in the

18 is automatically turned on in the forward direction, the power receiving terminal 11(VSYS) is automatically supplied by the

6, and then the FET7 in the

18 is completely turned on by the charging

4 or other control devices, so as to open the maximum current path.

In addition, when the

5 and the

7 in the independent use state are combined and used as a whole notebook computer, it is necessary to switch the power supply of the

5 from the

6 to the second power supply 8 (normally, the

8 has a large capacity and is used preferentially). At this time, the FET1 in the

12 and the FET2 in the

13 are turned on (it is necessary to switch to turn on the FET5 in the

16 and the FET6 in the sixth control unit 17), the FET3 in the

14 and the FET4 in the

15 are always turned off during the entire switching process, and the switching process is such that the FET5 in the

16 is turned on, the FET6 in the

17 is turned on, the FET7 in the

18 is turned off, the FET1 in the

12 and the FET2 in the

13 are always turned on, but the

6 is not charged.

In an embodiment of the present invention, the detecting the operation signal generated by operating the electronic device includes: the power supply is detected by the embedded

9 of the electronic device to determine whether the power supply is still connected with the embedded

9 after the electronic device is operated, and a corresponding operation signal is generated. The embedded

9 is a basic component of an electronic device such as a notebook computer, and can directly or indirectly detect the state of a power supply, such as whether the power supply is on-line, detached, or usable, and when it is determined that the power supply is still connected to the embedded

9 after the electronic device is operated, i.e., the power supply can be used, a corresponding operation signal is generated.

In one embodiment: during the charging process, the

6 is charged to be switched to the

8. Turning on of

1 and 2 at this time requires a transition to turning on of

3 and 4, and throughout the process FET7 is always on. The transition is with FET1 turned off, FET4 turned on, FET2 turned off, and FET3 turned on.

In another embodiment: during the charging process, the charging to the

8 is switched to the charging to the

6. Turning on of

3 and 4 at this time requires a transition to turning on of

1 and 2, and throughout the process FET7 is always on. The transition is with FET3 turned off, FET2 turned on, FET4 turned off, and FET1 turned on.

The embodiment of the invention also provides a power

1, the power

1 is applied to an electronic device with a plurality of power supplies, the electronic device is provided with a plurality of components, the power supplies are installed in the components, the components can be independently used, for example, a

5 of a notebook computer can be separated from an

7 and can be independently used as a tablet computer to be used by a user. The power

1 enables the components to be powered by the corresponding power supply when the components are separated, and also enables the electronic equipment to be powered by the appropriate power supply when the separated components are combined together to be used as the integral electronic equipment. As shown in fig. 3, the

1 includes a

2 and a

3 connected to each other:

the

2 is configured to detect an operation signal generated by operating the electronic device. The operation on the electronic equipment can be different operations in various forms, and in one embodiment, the operation on the electronic equipment is a splitting operation on the electronic equipment, so that the components of the electronic equipment can operate independently; in another embodiment, the operation of the electronic device is a combined operation of the electronic device to make the electronic device be used as a whole; in still another embodiment, the operation on the electronic apparatus is an operation of any combination of the combining sections on the electronic apparatus. The

2 detects an operation on the electronic device and generates a corresponding operation signal, which may embody a specific operation manner.

The

3 includes a control circuit, and the

3 is configured to control the power output of the power supply through the control circuit having a plurality of control units connected to the power supply according to the operation signal, so as to select the power supply to supply power to the electronic device. The control circuit is provided with a plurality of control units which are connected in a plurality of ways such as parallel connection or series connection, the control units can be connected to different power supplies in different connection ways or connected to a plurality of power supplies, and the specific connection way can be set according to the actual function to be realized. The control unit can perform on-off operation according to the control command to control the current flow direction, so that the

3 controls the power output of the power supply, for example, the

3 drives one or more power supplies to supply power to one component of the electronic device, drives another power supply or power supplies to supply power to another component, or drives other power supplies to stop discharging.

The

3 is further configured to control on or off of a Field Effect Transistor (FET) to control on or off of current in the control unit, thereby controlling the power supply to output power to the components. Because the Field Effect Transistor (FET) has the function of an electronic switch, when voltage is arranged on two sides of the control unit and the FET is switched on, current can flow through the control unit; when voltage is present on two sides of the control unit and the field effect transistor is turned off, if the diode connected in parallel with the field effect transistor is in the forward direction (the direction is the same as the voltage direction), current can flow through the diode, namely the control unit can be turned on; when there is a voltage on both sides of the control unit and the field effect transistor is turned off, if the diode connected in parallel with the field effect transistor is in the reverse direction (opposite to the voltage direction) at this time, the current cannot flow through the diode, i.e. the control unit cannot be turned on.

The

3 controls the power supply to output power to the components by controlling the on or off of the current in the control unit. Specifically, when the electronic device is split or combined, the

3 may control the current flow direction of the control unit according to the actual situation of the power supply in each electronic device (for example, after the electronic device is operated, the power supply is located on which component, or a certain power supply cannot be found), and further control the power supply to output power to the component, for example, control the power supply to perform power switching on the

5 of the notebook computer, so as to prevent sudden power failure and other situations when the

5 operates independently.

In an embodiment of the present invention, with reference to fig. 4 and 5, the electronic device includes a

6 and a

8 respectively mounted on different components, and the

6 and the

8 may be respectively mounted on different components, for example, the electronic device is a notebook computer, the

6 may be mounted in the

5 of the notebook computer, and the

8 may be mounted in the

7 of the notebook computer. The control circuit has a

12, a

13, a

14, a

15, a

16, a

17 and a

18.

The

12 and the

13 are connected in series to form a first control circuit, one side of the first control circuit is connected in series to the

6, and the other side of the first control circuit is connected in series to a power receiving end 11(VSYS) of the electronic device through a

18;

the

14 and the

15 are connected in series to form a second control circuit, one side of the second control circuit is connected in series to the

8, and the other side is connected in series to the power receiving end 11 through a

18;

the

16 and the

17 are connected in series to form a third control circuit, one side of which is connected in series to the

8 and the other side of which is connected in series to the power receiving terminal 11 or connected to the power receiving terminal 11 through another device (charging section 4).

The operation of the control unit will be further described with reference to fig. 5 by using an embodiment, the electronic device is a notebook computer, the

6 can be installed in the

5 of the notebook computer, and the

8 can be installed in the

7 of the notebook computer. At first, the

5 is electrically connected to the

7, the notebook computer is used as a whole, the

8 supplies power to the whole notebook computer, and the user separates the

5 from the

7 during the operation of the notebook computer to use the

5 as a tablet computer, which needs to be switched to the

6 to supply power to the

5. The former state of the process is that the FET1 in the

12 and the FET2 in the

13 are both in the on state, even if the

8 is interrupted momentarily, the

3 turns off both the FET5 in the

16 and the FET6 in the

17, the voltage of the power receiving terminal 11(VSYS) drops below the voltage of the

6 because the

8 is not supplying power, the diode in the

18 automatically turns on in the forward direction, so that the

6 automatically supplies power to the power receiving terminal 11(VSYS), and then the FET7 in the

18 is fully turned on through the charging

4, the

3, or other control devices, to open the maximum current path.

In addition, when the

5 and the

7 in the independent use state are combined and used as a whole notebook computer, it is necessary to switch the power supply of the

5 from the

6 to the second power supply 8 (normally, the

8 has a large capacity and is used preferentially). At this time, the FET1 in the

12 and the FET2 in the

13 are turned on (it needs to be changed to turn on the FET5 in the

16 and the FET6 in the sixth control unit 17), the FET3 in the

14 and the FET4 in the

15 are always turned off in the whole switching process, and the switching process is that the

3 turns on the FET5 in the

16, turns on the FET6 in the

17, turns off the FET7 in the

18, turns on the FET1 in the

12 and the FET2 in the

13, but the

6 is not charged.

In an embodiment of the present invention, the

2 is connected to an embedded

9 of the electronic device, and the

2 is further configured to detect a power source through the embedded

9, to determine whether the power source is still connected to the embedded

9 after the electronic device is operated, and to generate a corresponding operation signal. The embedded

9 is a basic component of an electronic device such as a notebook computer, and can directly or indirectly detect the state of a power supply, such as whether the power supply is on-line, detached, or usable, and when the

2 determines that the power supply is still connected with the embedded

9 after operating the electronic device, that is, the power supply can be used, a corresponding operation signal is generated.

In one embodiment of the present invention, the power

1 further includes a charging

4, the charging

4 is electrically connected to the

10 of the electronic device, and the charging

4 is configured to charge the power supply by control of the control circuit according to the operation signal, that is, to charge the power supply with external power, in conjunction with fig. 5.

In one embodiment: during the charging process, the

6 is charged to be switched to the

8. Turning on of

1 and 2 at this time requires a transition to turning on of

3 and 4, and throughout the process FET7 is always on. The transition is for

3 to turn FET1 off, FET4 on, FET2 off, and FET3 on.

In another embodiment: during the charging process, the charging to the

8 is switched to the charging to the

6. Turning on of

3 and 4 at this time requires a transition to turning on of

1 and 2, and throughout the process FET7 is always on. The transition is for

3 to turn FET3 off, FET2 on, FET4 off, and FET1 on.

1. A power supply control method applied to an electronic apparatus having a plurality of power supplies, the electronic apparatus having a plurality of components, the power supplies being mounted in the components, the method comprising:

detecting an operation signal generated by operating the electronic equipment;

controlling the power output of the power supply through a control circuit which is connected to the power supply and provided with a plurality of control units according to the operation signal so as to select the power supply to supply power to the electronic equipment;

the electronic equipment comprises a first power supply and a second power supply which are respectively arranged on different components, the control circuit is provided with a first control circuit, a second control circuit and a third control circuit, and the first control circuit, the second control circuit and the third control circuit are matched with each other to control the power output of the first power supply and the second power supply;

the first control circuit comprises a first control unit and a second control unit which are connected in series, the second control circuit comprises a third control unit and a fourth control unit which are connected in series, and the third control circuit comprises a fifth control unit and a sixth control unit which are connected in series;

one side of the first control circuit is connected to the first power supply in series, and the other side of the first control circuit is connected to the power receiving end of the electronic equipment in series through a seventh control unit;

one side of the second control circuit is connected to the second power supply in series, and the other side of the second control circuit is connected to the power receiving end in series through the seventh control unit;

one side of the third control circuit is connected in series to the second power source, and the other side of the third control circuit is connected in series to the power receiving terminal.

2. The method of claim 1, wherein the control unit is a diode and a field effect transistor connected in parallel, and wherein controlling the power output of the power supply via a control circuit having a plurality of control units connected to the power supply to select the power supply to power the electronic device comprises:

connecting the control units with the direction characteristics to different power supplies respectively;

controlling the on or off of the field effect transistor to control the on or off of the current in the control unit;

and controlling the power supply to output power to the components by controlling the on or off of the current in the control unit.

3. The method of claim 1, wherein detecting the operation signal generated by operating the electronic device comprises:

the power supply is detected through an embedded controller of the electronic equipment to determine whether the power supply is still connected with the embedded controller after the electronic equipment is operated and generate a corresponding operation signal.

4. The method of claim 1, further comprising charging the power supply under control of the control circuit according to the operating signal.

5. A power control device, wherein the device is applied to an electronic device having a plurality of power sources, the electronic device having a plurality of components, the power sources being installed in the components, the device comprising a detection module and a control module connected to each other:

the detection module is configured to detect an operation signal generated by operating the electronic equipment;

the control module comprises a control circuit, and the control module is configured to control the power output of the power supply through the control circuit with a plurality of control units connected to the power supply according to the operation signal so as to select the power supply to supply power to the electronic equipment;

the electronic equipment comprises a first power supply and a second power supply which are respectively arranged on different components, the control circuit is provided with a first control circuit, a second control circuit and a third control circuit, and the first control circuit, the second control circuit and the third control circuit are matched with each other to control the power output of the first power supply and the second power supply;

the first control circuit comprises a first control unit and a second control unit which are connected in series, the second control circuit comprises a third control unit and a fourth control unit which are connected in series, and the third control circuit comprises a fifth control unit and a sixth control unit which are connected in series;

one side of the first control circuit is connected to the first power supply in series, and the other side of the first control circuit is connected to the power receiving end of the electronic equipment in series through a seventh control unit;

one side of the second control circuit is connected to the second power supply in series, and the other side of the second control circuit is connected to the power receiving end in series through the seventh control unit;

one side of the third control circuit is connected in series to the second power source, and the other side of the third control circuit is connected in series to the power receiving terminal.

6. The apparatus of claim 5, wherein the control unit is a diode and a field effect transistor connected in parallel,

the control units have directional characteristics and are respectively connected to different power supplies;

the control module is further configured to control the on or off of the field effect transistor to control the on or off of the current in the control unit, so as to control the power supply to output power to the component.

7. The apparatus of claim 5, wherein the detection module is coupled to an embedded controller of the electronic device, and the detection module is further configured to detect the power source via the embedded controller to determine whether the power source is still coupled to the embedded controller after the electronic device is operated, and to generate a corresponding operation signal.

8. The apparatus according to claim 5, wherein the power supply control apparatus further comprises a charging section electrically connected to a power adapter of the electronic device, the charging section being configured to charge the power supply by control of the control circuit according to the operation signal.

9. An electronic apparatus having a plurality of power sources and a plurality of components, the power sources being mounted in the components, the electronic apparatus controlling the power sources by the power source control method according to any one of claims 1 to 4.