CN219435304U - Power supply circuit, keyboard and two-in-one notebook - Google Patents
Power supply circuit, keyboard and two-in-one notebook Download PDFInfo
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- CN219435304U CN219435304U CN202320474089.XU CN202320474089U CN219435304U CN 219435304 U CN219435304 U CN 219435304U CN 202320474089 U CN202320474089 U CN 202320474089U CN 219435304 U CN219435304 U CN 219435304U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
The application relates to the technical field of power supply, in particular to a power supply circuit, a keyboard and a two-in-one notebook. The power supply circuit is applied to the keyboard and comprises a first power supply branch circuit for supplying power to the keyboard by the charging equipment, a second power supply branch circuit for supplying power to the terminal equipment by the charging equipment, a third power supply branch circuit for supplying power to the keyboard by the terminal equipment and a control module; the control module is respectively connected with the first power supply branch, the second power supply branch and the third power supply branch and controls the conduction states of the first power supply branch, the second power supply branch and the third power supply branch. According to the technical scheme, the problem that in the prior art, power is supplied to a keyboard through terminal equipment such as a tablet personal computer, power consumption of the tablet personal computer is increased, and the duration of the tablet personal computer is influenced is solved, the problem that a user moves the terminal equipment back and forth in the using process is avoided, the terminal equipment can bring a power adapter to move back and forth, and the use experience of the user is improved.
Description
Technical Field
The application relates to the technical field of power supply, in particular to a power supply circuit, a keyboard and a two-in-one notebook.
Background
Along with the wide application of the two-in-one notebook, the functions of the two-in-one notebook are more and more perfect, and besides meeting the normal office, the two-in-one notebook has the advantages of light weight, convenience in carrying, convenience in power supply and the like. At present, the power supply of the two-in-one notebook is connected with the power adapter through a type-c interface of the tablet personal computer to supply power to the tablet personal computer, or is connected with the power adapter through the docking station through the type-c interface inserted into the docking station to supply power to the tablet personal computer.
The keyboard in the two-in-one notebook computer is used as an external device of the tablet computer, and the tablet computer is required to supply power to the keyboard so as to meet the requirement of normal operation of the keyboard. When the keyboard is in a power consumption state all the time in work, the power consumption of the tablet personal computer is increased, and the endurance time of the tablet personal computer is influenced. In addition, after the tablet personal computer is inserted into the power adapter, a user moves the tablet personal computer back and forth in the using process, and the tablet personal computer can move back and forth with the power adapter, so that the using experience of the user is affected.
Disclosure of Invention
Based on the above, it is necessary to address the above technical problems, and the application provides a power supply circuit, a keyboard and a two-in-one notebook, which solves the problems that in the prior art, power is supplied to the keyboard through a terminal device such as a tablet computer, the power consumption of the tablet computer is increased, and the duration of the tablet computer is affected, and avoids the problem that a user moves the terminal device back and forth in the use process, and the terminal device can carry a power adapter to move back and forth, thereby being beneficial to improving the use experience of the user.
In a first aspect, an embodiment of the present application provides a power supply circuit, applied to a keyboard, including:
the keyboard comprises a first power supply branch circuit for supplying power to the keyboard by charging equipment, a second power supply branch circuit for supplying power to terminal equipment by the charging equipment, a third power supply branch circuit for supplying power to the keyboard by the terminal equipment and a control module;
the control module is respectively connected with the first power supply branch, the second power supply branch and the third power supply branch and controls the conduction states of the first power supply branch, the second power supply branch and the third power supply branch.
In some embodiments, the first power supply branch comprises a first unidirectional switch, the second power supply branch comprises a second unidirectional switch, the third power supply branch comprises a third unidirectional switch, the input end of the first unidirectional switch and the input end of the second unidirectional switch are both connected with the charging device, the output end of the first unidirectional switch and the output end of the third unidirectional switch are both connected with the power supply end of the control module, and the output end of the second unidirectional switch and the input end of the third unidirectional switch are both connected with the terminal device;
the different control signal output ends of the control module are respectively connected with the control end of the first unidirectional change-over switch, the control end of the second unidirectional change-over switch and the control end of the third unidirectional change-over switch so as to control the conduction states of the first power supply branch, the second power supply branch and the third power supply branch.
In some embodiments, a first connection signal detection end of the control module is connected with a first interface of the keyboard and is used for detecting a connection state of the charging device and the keyboard, and a second connection signal detection end of the control module is connected with a second interface of the keyboard and is used for detecting a connection state of the keyboard and the terminal device;
the charging equipment is connected with the first power supply branch and the second power supply branch through the first interface, and the terminal equipment is connected with the second power supply branch and the third power supply branch through the second interface.
In some embodiments, the control module detects that the charging device is connected to the keyboard, and the keyboard is connected to the terminal device, controls the first power supply branch and the second power supply branch to be turned on, and controls the third power supply branch to be turned off.
In some embodiments, the control module detects that the charging device is connected with the keyboard, and the keyboard is disconnected from the terminal device, so as to control the first power supply branch to be conducted.
In some embodiments, the control module detects that the charging device is disconnected from the keyboard, and the keyboard is connected with the terminal device, so as to control the third power supply branch to be turned on.
In some embodiments, the first interface is a Type-C interface, and the control module includes a power supply control chip and a micro control unit; the first end of the power supply control chip is connected with the Type-C interface, the second end of the power supply control chip is connected with the micro control unit, and the micro control unit is respectively connected with the first power supply branch, the second power supply branch and the third power supply branch.
In a second aspect, embodiments of the present application provide a keyboard comprising a power supply circuit as described in the first aspect.
In a third aspect, an embodiment of the present application provides a two-in-one notebook, including a tablet computer and a keyboard according to the second aspect, the tablet computer and the keyboard are connected through a connector, and the connector is connected with a second power supply branch and a third power supply branch.
In some embodiments, the connector is a pogo pin connector.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
the power supply circuit that this application embodiment provided is applied to the keyboard, includes: the keyboard comprises a first power supply branch circuit for supplying power to the keyboard by the charging equipment, a second power supply branch circuit for supplying power to the terminal equipment by the charging equipment, a third power supply branch circuit for supplying power to the keyboard by the terminal equipment and a control module; the control module is respectively connected with the first power supply branch, the second power supply branch and the third power supply branch and controls the conduction states of the first power supply branch, the second power supply branch and the third power supply branch. Therefore, the charging equipment can supply power to the keyboard through the first power supply branch, and the problem that in the prior art, the power is supplied to the keyboard through the terminal equipment such as a tablet personal computer, the power consumption of the tablet personal computer is increased, and the duration of the tablet personal computer is influenced is solved. In addition, the charging equipment is when supplying power to the keyboard, still accessible second power supply branch road supplies power to terminal equipment, need not external power adapter on terminal equipment and supplies power to terminal equipment, has solved user and has moved terminal equipment such as panel computer back and forth in the use, and panel computer can bring power adapter back and forth movement's problem to be favorable to improving user's use experience. Through setting up the third power supply branch road, when the keyboard does not insert battery charging outfit, still accessible terminal equipment supplies power to the keyboard to ensure the work demand of keyboard.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a power supply circuit according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of another power supply circuit according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of another power supply circuit according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of another power supply circuit according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a two-in-one notebook according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
The power supply circuit is applied to a keyboard, and the charging equipment can supply power to the keyboard through the first power supply branch, so that the problem that in the prior art, the power consumption of the tablet personal computer is increased and the duration of the tablet personal computer is influenced due to the fact that the terminal equipment such as the tablet personal computer supplies power to the keyboard is solved. In addition, the charging equipment is when supplying power to the keyboard, still accessible second power supply branch road supplies power to terminal equipment, need not external power adapter on terminal equipment and supplies power to terminal equipment, has solved user and has moved terminal equipment such as panel computer back and forth in the use, and panel computer can bring power adapter back and forth movement's problem to be favorable to improving user's use experience. Through setting up the third power supply branch road, when the keyboard does not insert battery charging outfit, still accessible terminal equipment supplies power to the keyboard to ensure the work demand of keyboard.
The power supply circuit, the keyboard and the two-in-one notebook provided by the embodiment of the application are exemplified by the following with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a power supply circuit according to an embodiment of the present application. As shown in fig. 1, the power supply circuit 10 is applied to a keyboard, and includes: a first power supply branch 11 for supplying power to the keyboard by the charging device 14, a second power supply branch 12 for supplying power to the terminal device 15 by the charging device 14, a third power supply branch 13 for supplying power to the keyboard by the terminal device 15, and a control module 16;
the control module 16 is respectively connected with the first power supply branch 11, the second power supply branch 12 and the third power supply branch 13, and controls the conduction states of the first power supply branch 11, the second power supply branch 12 and the third power supply branch 13.
The power supply circuit 10 comprises a first power supply branch 11, a second power supply branch 12 and a third power supply branch 13. A charging device 14, such as a power adapter, may supply power to the keyboard via the first power supply branch 11, a charging device 14, such as a power adapter, may supply power to the terminal device 15 via the second power supply branch 12, and a terminal device 15, such as a tablet computer, may supply power to the keyboard via the third power supply branch 13.
Specifically, the control module 16 is electrically connected with the first power supply branch 11, and the first power supply branch 11 is controlled by the control module 16 to be conducted so as to supply power to the keyboard, so that the charging device 14 supplies power to the keyboard through the first power supply branch 11; the control module 16 is electrically connected with the second power supply branch 12, and the second power supply branch 12 is controlled to be conducted through the control module 16 so as to realize that the charging equipment 14 supplies power to the terminal equipment 15 through the second power supply branch 12; the control module 16 is electrically connected with the third power supply branch 13, and the third power supply branch 13 is controlled to be conducted by the control module 16 to supply power to the keyboard, so that the terminal equipment 15 supplies power to the keyboard through the third power supply branch 13.
The power supply circuit 10 provided in the embodiment of the present application is applied to a keyboard, and a first power supply branch 11, a second power supply branch 12 and a third power supply branch 13 are provided in the keyboard, and power supply to the keyboard by a charging device 14, such as a power adapter, is realized through the first power supply branch 11. In addition, the charging device 14, for example, the power adapter, can supply power to the keyboard, and simultaneously supply power to the terminal device 15 through the second power supply branch 12, so that the terminal device 15 does not need to be externally connected with the power adapter to supply power to the terminal device 15. By providing the third power supply branch 13, the keyboard can be powered via the terminal device 15 when the keyboard is not connected to the charging device 14, e.g. a power adapter, to ensure the operational requirements of the keyboard.
The power supply circuit that this application embodiment provided is applied to the keyboard, includes: the keyboard comprises a first power supply branch circuit for supplying power to the keyboard by the charging equipment, a second power supply branch circuit for supplying power to the terminal equipment by the charging equipment, a third power supply branch circuit for supplying power to the keyboard by the terminal equipment and a control module; the control module is respectively connected with the first power supply branch, the second power supply branch and the third power supply branch and controls the conduction states of the first power supply branch, the second power supply branch and the third power supply branch. Therefore, the charging equipment can supply power to the keyboard through the first power supply branch, and the problem that in the prior art, the power is supplied to the keyboard through the terminal equipment such as a tablet personal computer, the power consumption of the tablet personal computer is increased, and the endurance time of the tablet personal computer is influenced is solved. In addition, the charging equipment is when supplying power to the keyboard, still accessible second power supply branch road supplies power to terminal equipment, need not external power adapter on terminal equipment and supplies power to terminal equipment, has solved user and has moved terminal equipment such as panel computer back and forth in the use, and panel computer can bring power adapter back and forth movement's problem to be favorable to improving user's use experience. Through setting up the third power supply branch road, when the keyboard does not insert battery charging outfit, still accessible terminal equipment supplies power to the keyboard to ensure the work demand of keyboard.
In some embodiments, fig. 2 is a schematic structural diagram of another power supply circuit according to the present application. As shown in fig. 2, the first power supply branch 11 includes a first unidirectional switch 011, the second power supply branch 12 includes a second unidirectional switch 012, the third power supply branch 13 includes a third unidirectional switch 013, an input terminal A1 of the first unidirectional switch 011 and an input terminal B1 of the second unidirectional switch 012 are both connected to the charging device 14, an output terminal A2 of the first unidirectional switch 011 and an output terminal C2 of the third unidirectional switch 013 are both connected to a power source terminal D4 of the control module 16, and an output terminal B2 of the second unidirectional switch 012 and an input terminal C1 of the third unidirectional switch 013 are both connected to the terminal device 15;
the different control signal output ends of the control module 16 are respectively connected with the control end A3 of the first unidirectional switch 011, the control end B3 of the second unidirectional switch 012 and the control end C3 of the third unidirectional switch 013, so as to control the conduction states of the first power supply branch 11, the second power supply branch 12 and the third power supply branch 13.
Specifically, when the keyboard access charging device 14 such as a power adapter is operated, the charging device 14 is electrically connected to the input terminal A1 of the first unidirectional changeover switch 011 and the input terminal B1 of the second unidirectional changeover switch 012, respectively. The output end A2 of the first unidirectional switch 011 is electrically connected with the power end D4 of the control module 16, so as to supply power to the keyboard through the power end D4 of the control module 16; the output terminal B2 of the second unidirectional changeover switch 012 is electrically connected to the terminal device 15 to supply power to the terminal device 15.
The third unidirectional switching input end C1 is electrically connected with the terminal device 15, the third unidirectional switching output end C2 is electrically connected with the power end D4 of the control module 16, and when the keyboard is not connected to the charging device 14, the terminal device 15 can supply power to the power end D4 of the control module 16, so as to realize that the terminal device 15 supplies power to the keyboard.
Specifically, a first control signal output end D1 of the control module 16 outputs a switch closing control signal to a control end A3 of the first unidirectional switch 011, so that the first unidirectional switch 011 is turned on, that is, the first power supply branch 11 is turned on, so as to realize that the charging device 14 supplies power to the keyboard; the second control signal output end D2 of the control module 16 outputs a switch closing control signal to the control end B3 of the second unidirectional switch 012, so that the second unidirectional switch 012 is turned on, that is, the second power supply branch 12 is turned on, so as to realize that the charging device 14 supplies power to the terminal device 15; the third control signal output end D3 of the control module 16 outputs a switch closing control signal to the control end C3 of the third unidirectional switch 013, so that the third unidirectional switch 013 is turned on, that is, the third power supply branch 13 is turned on, so as to realize that the terminal device 15 supplies power to the keyboard.
In some embodiments, fig. 3 is a schematic structural diagram of still another power supply circuit according to an embodiment of the present application. As shown in fig. 3, the first connection signal detecting end D5 of the control module 16 is connected to the first interface 17 of the keyboard for detecting the connection state of the charging device 14 and the keyboard, and the second connection signal detecting end D6 of the control module 16 is connected to the second interface 18 of the keyboard for detecting the connection state of the keyboard and the terminal device 15.
The charging device 14 is connected to the first power supply branch 11 and the second power supply branch 12 via a first interface 17, and the terminal device 15 is connected to the second power supply branch 12 and the third power supply branch 13 via a second interface 18.
Specifically, the keyboard is provided with a first interface 17 and a second interface 18, and the control module 16 is correspondingly provided with a first connection signal detection end D5 and a second connection signal detection end D6. The first connection signal detection end D5 is electrically connected to the first interface 17, and is configured to detect a connection state between the charging device 14 and the keyboard; the second connection signal detection end D6 is electrically connected to the second interface 18, and is configured to detect a connection state between the terminal device 15 and the keyboard; thereby controlling the conductive states of the first power supply branch 11, the second power supply branch 12, and the third power supply branch 13 based on the connection state of the charging device 14 and the keyboard, and the connection state of the terminal device 15 and the keyboard.
In some embodiments, with continued reference to fig. 3, the control module 16 detects that the charging device 14 is connected to the keypad, and the keypad is connected to the terminal device 15, controls the first power supply branch 11 and the second power supply branch 12 to be on, and controls the third power supply branch 13 to be off.
Specifically, in combination with the above, the control module 16 detects that the charging device 14 is in a connection state with the keyboard through the first connection signal detecting terminal D5, and detects that the keyboard is in a connection state with the terminal device 15 through the second connection signal detecting terminal D6, at this time, controls the first power supply branch 11 and the second power supply branch 12 to be turned on, controls the third power supply branch 13 to be turned off, and thereby the charging device 14 supplies power to the keyboard through the first power supply branch 11, and supplies power to the terminal device 15 through the second power supply branch 12. In this process, the terminal device 15 is not required to supply power to the keyboard, and thus the third power supply branch 13 is controlled to be disconnected.
In some embodiments, with continued reference to fig. 3, the control module 16 detects that the charging device 14 is connected to the keypad, and that the keypad is disconnected from the terminal device 15, controlling the first power supply branch 11 to be conductive.
Specifically, in combination with the above, the control module 16 detects that the charging device 14 is in a connection state with the keyboard through the first connection signal detection end D5, and detects that the keyboard is in a disconnection state with the terminal device 15 through the second connection signal detection end D6, and controls the first power supply branch 11 to be turned on at this time, so as to realize that the charging device 14 supplies power to the keyboard through the first power supply branch 11, thereby meeting the working requirement of the keyboard.
It should be noted that, when the keyboard is in the disconnected state with the terminal device 15, the second power supply branch 12 and the third power supply branch 13 are also in the disconnected state.
In some embodiments, with continued reference to fig. 3, the control module 16 detects that the charging device 14 is disconnected from the keypad, and the keypad is connected to the terminal device 15, controlling the third power supply branch 13 to be conductive.
Specifically, in combination with the above, the control module 16 detects that the charging device 14 is in a disconnected state with the keyboard through the first connection signal detection end D5, and detects that the keyboard is connected with the terminal device 15 through the second connection signal detection end D6, and controls the third power supply branch 13 to be turned on at this time, so as to realize that the terminal device 15 supplies power to the keyboard through the third power supply branch 13, thereby meeting the working requirement of the keyboard.
When the charging device 14 is disconnected from the keyboard, the first power supply branch 11 and the second power supply branch 12 are also disconnected.
In some embodiments, fig. 4 is a schematic structural diagram of still another power supply circuit according to an embodiment of the present application. As shown in fig. 4, the first interface 17 is a Type-C interface, and the control module 16 includes a power supply control chip 161 and a micro control unit 162; the first end of the power supply control chip 161 is connected with the Type-C interface, the second end is connected with the micro control unit 162, and the micro control unit 162 is respectively connected with the first power supply branch 11, the second power supply branch 12 and the third power supply branch 13.
Specifically, when the charging device 14 is connected to the Type-C interface, the power supply control chip 161 can control the output voltage and the output current of the pins in the Type-C interface, so as to meet the required voltage and the required current of the keyboard and the normal operation of the terminal device 15. In addition, when the first end of the power supply control chip 161 is connected to the Type-C interface, the first end of the power supply control chip 161 may be used as the first connection signal detection end D5 of the control module 16, so that the detected connection signal of the charging device 14 and the keyboard is transmitted to the micro control unit 162 through the second end D7 of the power supply control chip 161.
The micro control unit 162 is connected to the first power supply branch 11, the second power supply branch 12, and the third power supply branch 13, respectively, and is configured to control the conductive states of the first power supply branch 11, the second power supply branch 12, and the third power supply branch 13.
On the basis of the above embodiments, the embodiments of the present application provide a keyboard, which includes the power supply circuit as described in the above embodiments of the present application, so that the keyboard has the same or similar beneficial effects, and will not be described herein.
The embodiment of the application provides a two-in-one notebook. Fig. 5 is a schematic structural diagram of a two-in-one notebook according to an embodiment of the present application. As shown in fig. 5, the two-in-one notebook 20 includes a tablet computer 015 and a keyboard 010 according to the above embodiments, so that the same or similar advantages are achieved, and will not be described herein.
Wherein the tablet 015 and the keyboard 010 are connected by means of a connector 19. Specifically, one end of the connector 19 is connected to the second interface 18 on the keyboard 010, and the other end of the connector 19 is connected to the tablet computer 015, so that a connection state between the tablet computer 015 and the keyboard 010 is achieved through the connector 19. When the tablet computer 015 and the keyboard 010 are in a connection state, the connector 19 is connected with the second power supply branch 12 and the third power supply branch 13 in the keyboard 010 through the second interface 18, so that when the charging device 14 is connected to the keyboard 010, the charging device 14 supplies power to the tablet computer 015 through the second power supply branch 12 and the connector 19, and when the charging device 14 is not connected to the keyboard 010, the tablet computer 015 can supply power to the keyboard 010 through the third power supply branch 13.
The connector 19 is illustratively provided as a pogo pin connector. Thereby, the connection between the tablet 015 and the keyboard 010 is achieved through the pogo pin connector. The spring needle connector has a power transmission function.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples represent only a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (10)
1. A power supply circuit for a keyboard, comprising:
the keyboard comprises a first power supply branch circuit for supplying power to the keyboard by charging equipment, a second power supply branch circuit for supplying power to terminal equipment by the charging equipment, a third power supply branch circuit for supplying power to the keyboard by the terminal equipment and a control module;
the control module is respectively connected with the first power supply branch, the second power supply branch and the third power supply branch and controls the conduction states of the first power supply branch, the second power supply branch and the third power supply branch.
2. The power supply circuit according to claim 1, wherein the first power supply branch comprises a first unidirectional switch, the second power supply branch comprises a second unidirectional switch, the third power supply branch comprises a third unidirectional switch, the input end of the first unidirectional switch and the input end of the second unidirectional switch are both connected with the charging device, the output end of the first unidirectional switch and the output end of the third unidirectional switch are both connected with the power supply end of the control module, and the output end of the second unidirectional switch and the input end of the third unidirectional switch are both connected with the terminal device;
the different control signal output ends of the control module are respectively connected with the control end of the first unidirectional change-over switch, the control end of the second unidirectional change-over switch and the control end of the third unidirectional change-over switch so as to control the conduction states of the first power supply branch, the second power supply branch and the third power supply branch.
3. The power supply circuit according to claim 1, wherein a first connection signal detection end of the control module is connected to a first interface of the keyboard for detecting a connection state of the charging device to the keyboard, and a second connection signal detection end of the control module is connected to a second interface of the keyboard for detecting a connection state of the keyboard to the terminal device;
the charging equipment is connected with the first power supply branch and the second power supply branch through the first interface, and the terminal equipment is connected with the second power supply branch and the third power supply branch through the second interface.
4. A power supply circuit according to claim 3, wherein the control module detects that the charging device is connected to the keyboard, and the keyboard is connected to the terminal device, controls the first power supply branch and the second power supply branch to be turned on, and controls the third power supply branch to be turned off.
5. A power supply circuit according to claim 3, wherein the control module detects that the charging device is connected to the keyboard, and the keyboard is disconnected from the terminal device, and controls the first power supply branch to be turned on.
6. A power supply circuit according to claim 3, wherein the control module detects that the charging device is disconnected from the keyboard, and the keyboard is connected to the terminal device, and controls the third power supply branch to be turned on.
7. The power supply circuit of claim 3, wherein the first interface is a Type-C interface, and the control module comprises a power supply control chip and a micro control unit; the first end of the power supply control chip is connected with the Type-C interface, the second end of the power supply control chip is connected with the micro control unit, and the micro control unit is respectively connected with the first power supply branch, the second power supply branch and the third power supply branch.
8. A keyboard comprising a power supply circuit as claimed in any one of claims 1 to 7.
9. The two-in-one notebook computer is characterized by comprising a tablet computer and the keyboard according to claim 8, wherein the tablet computer is connected with the keyboard through a connector, and the connector is connected with a second power supply branch and a third power supply branch.
10. The two-in-one notebook of claim 9, wherein the connector is a pogo pin connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320474089.XU CN219435304U (en) | 2023-03-13 | 2023-03-13 | Power supply circuit, keyboard and two-in-one notebook |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320474089.XU CN219435304U (en) | 2023-03-13 | 2023-03-13 | Power supply circuit, keyboard and two-in-one notebook |
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| Publication Number | Publication Date |
|---|---|
| CN219435304U true CN219435304U (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320474089.XU Active CN219435304U (en) | 2023-03-13 | 2023-03-13 | Power supply circuit, keyboard and two-in-one notebook |
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| Country | Link |
|---|---|
| CN (1) | CN219435304U (en) |
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2023
- 2023-03-13 CN CN202320474089.XU patent/CN219435304U/en active Active
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