Switching circuit and intelligent device

Abstract

The utility model provides a switching circuit comprising a control unit used for outputting a first level signal or a second level signal; a first end of the switch unit is electrically connected with a power supply, a second end of the switch unit is used as a power supply output end, and a third end of the switch unit is electrically connected with the control unit; when the third end of the switch unit receives the first level signal, the power supply is electrically connected with the power supply output end; and when the third end of the switch unit receives the second level signal, the electric connection between the power supply and the power supply output end is cut off. The utility model further provides the intelligent equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to a switching circuit and a smart device comprising the same. BACKGROUND

[0002] Computers have the advantages of large amount of stored information and convenient and fast access to information, and are widely used. With the rapid development of science and technology, the functions that can be realized by the display screen of a computer are more and more, resulting in higher power consumption of the display screen in a sleep state. The increase of the power consumption of the display screen in the sleep state makes it difficult for the overall power consumption of the computer in the sleep state to meet the power consumption requirements specified in the energy saving regulations related to the computer. CONTENT OF THE INVENTION

[0003] The first aspect of the present application provides a switching circuit, comprising:

[0004] a control unit configured to output a first level signal or a second level signal; and

[0005] a switching unit, a first end of the switching unit being electrically connected to a power supply, a second end of the switching unit being configured as a power supply output end, and a third end of the switching unit being electrically connected to the control unit;

[0006] when the third end of the switching unit receives the first level signal, the switching unit establishes an electrical connection between the power supply and the power supply output end; and when the third end of the switching unit receives the second level signal, the switching unit disconnects the electrical connection between the power supply and the power supply output end.

[0007] In the above switching circuit, the switching unit switches the connection state between the power supply and the power supply output end according to the first level signal or the second level signal output by the control unit. When the switching circuit is applied to a smart device such as a computer, if the computer is in a sleep state, the switching circuit can disconnect the electrical connection between the power supply and the power supply output end through the control unit. At this time, the load supplied with electric energy by the power supply output end will no longer work, thereby saving electric energy and reducing the overall power consumption of the computer in the sleep state.

[0008] Further, the control unit comprises a first switching module, a second switching module and a conversion module, a first end of the first switching module being electrically connected to the third end of the switching unit, a third end of the first switching module being electrically connected to a first end of the conversion module, a second end of the conversion module being electrically connected to a first end of the second switching module, the first end of the second switching module also being electrically connected to the power supply, a third end of the second switching module being electrically connected to the power supply output end, a second end of the second switching module and a second end of the first switching module being grounded;

[0009] The conversion module is configured to change the potential of the third end of the first switch module, and the control unit outputs the first level signal or the second level signal.

[0010] Further, when the potential of the first switch module is high, the conversion module causes the control unit to output the first level signal.

[0011] When the potential of the first switch module is low, the conversion module causes the control unit to output the second level signal.

[0012] Further, the first switch module comprises a first switch tube, the second switch module comprises a second switch tube, and the conversion module comprises a transient switch.

[0013] The first end of the first switch tube is electrically connected to the third end of the switch unit, the control end of the first switch tube is electrically connected to the first end of the transient switch, the second end of the transient switch is electrically connected to the first end of the second switch tube,

[0014] The first end of the second switch tube is also electrically connected to the power supply, the control end of the second switch tube is electrically connected to the power supply output end, and the second end of the second switch tube and the second end of the first switch tube are grounded.

[0015] Further, the first switch tube is a first transistor, and the second switch tube is a second transistor,

[0016] The base of the first transistor is the control end of the first switch tube, the collector of the first transistor is the first end of the first switch tube, and the emitter of the first transistor is the second end of the first switch tube.

[0017] The base of the second transistor is the control end of the second switch tube, the collector of the second transistor is the first end of the second switch tube, and the emitter of the second transistor is the second end of the second switch tube.

[0018] Further, the switch unit comprises a third switch tube, the control end of the third switch tube is electrically connected to the control unit, the first end of the third switch tube is electrically connected to the power supply, and the second end of the third switch tube is electrically connected to the power supply output end.

[0019] Further, the third switch tube is a field effect tube, the gate of the field effect tube is the control end of the third switch tube, the source of the field effect tube is the first end of the third switch tube, and the drain of the field effect tube is the second end of the third switch tube.

[0020] Further, the control circuit further comprises a power consumption unit electrically connected to the control unit.

[0021] When the third end of the switch unit receives the second level signal to disconnect the electrical connection between the power supply and the power supply output end, the power consumption unit is configured to consume the current in the control unit.

[0022] Further, the power consumption unit comprises a diode, which is electrically connected to the control unit.

[0023] When the third end of the switch unit receives the second level signal to disconnect the electrical connection between the power supply and the power supply output end, the current in the control unit flows through the diode, so that the diode emits light, thereby consuming the current in the control unit.

[0024] The second aspect of the present application provides an intelligent device, comprising:

[0025] a power supply;

[0026] a load; and

[0027] a switch circuit as described in any of the above embodiments, which is electrically connected to the power supply and the load respectively, and is configured to switch the connection state between the power supply and the load.

[0028] For the above-mentioned intelligent device, the above-mentioned switch circuit is integrated, and all the beneficial effects of the above-mentioned switch circuit can be achieved. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a module structure diagram of the switch circuit of the embodiments of the present application.

[0030] Figure 2 It is a circuit structure diagram of the switch circuit of the embodiments of the present application.

[0031] Figure 3 It is a module diagram of the intelligent device of the embodiments of the present application.

[0032] MAIN ELEMENT SYMBOL EXPLANATION

[0033] Intelligent device: 1

[0034] Switch circuit: 100

[0035] Control unit: 10

[0036] First switch module: 11

[0037] First switch tube: 110

[0038] First transistor: Q2

[0039] Second switch module: 12

[0040] Second switch tube: 120

[0041] Second transistor: Q3

[0042] Conversion module: 13

[0043] Instantaneous switch: 130

[0044] Switching unit: 20

[0045] Third switch tube: 21

[0046] Field effect tube: Q1

[0047] Power consumption unit: 30

[0048] Diode: 31

[0049] Voltage input end: Vin

[0050] Voltage output end: Vout

[0051] Power supply: 200

[0052] Load: 300

[0053] The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0054] The present application provides a switching circuit applied in a smart device. One end of the switching circuit is connected with a power supply of the smart device, and the other end is connected with a load in the smart device, for switching the connection state between the power supply and the load. The switching circuit of the present application can disconnect the electrical connection between the power supply and the load when the smart device is in a sleep state, that is, stop supplying power to the load when the smart device is in a sleep state, thereby reducing the power consumption of the smart device in a sleep state.

[0055] Please refer to Figure 1 , the switching circuit 100 of the embodiment of the present application includes a control unit 10 and a switching unit 20 electrically connected with each other. The control unit 10 is used to output a first level signal or a second level signal to the switching unit 20. The first end of the switching unit 20 is electrically connected with the power supply, the second end of the switching unit 20 is used as a power supply output end, and the third end of the switching unit 20 is electrically connected with the control unit 10. When the third end of the switching unit 20 receives the first level signal, the electrical connection between the power supply and the power supply output end is established; when the third end of the switching unit 20 receives the second level signal, the electrical connection between the power supply and the power supply output end is disconnected. That is, the control unit 10 switches the connection state between the power supply and the power supply output end by outputting different level signals.

[0056] In the embodiment, the control unit 10 comprises a first switch module 11, a second switch module 12 and a conversion module 13. The first end of the first switch module 11 is electrically connected with the third end of the switch unit 20, the third end of the first switch module 11 is electrically connected with the first end of the conversion module 13, the second end of the conversion module 13 is electrically connected with the first end of the second switch module 12, the first end of the second switch module 12 is also electrically connected with the power supply (the first end of the switch unit 20), the third end of the second switch module 12 is electrically connected with the power supply output end (the second end of the switch unit 20), and the second end of the second switch module 12 and the second end of the first switch module 11 are grounded. The first end of the first switch module 11 is the signal output end of the control unit 10.

[0057] The conversion module 13 is used for changing the potential of the third end of the first switch module 11, so as to change the working state of the first switch module 11, thereby making the control unit 10 switch to output the first level signal or the second level signal.

[0058] When the third end of the first switch module 11 is high potential by the conversion module 13, the first end of the first switch module 11 is low potential, the control unit 10 outputs the first level signal, and the third end of the switch module 20 receives the first level signal, thereby establishing the electrical connection between the power supply and the power supply output end.

[0059] When the third end of the first switch module 11 is low potential by the conversion module 13, the first end of the first switch module 11 is high potential, the control unit 10 outputs the second level signal, and the third end of the switch unit 20 receives the second level signal, thereby breaking the electrical connection between the power supply and the power supply output end.

[0060] Please refer to Figure 2 In the embodiment, the first switch module 11 comprises a first switch tube 110, the second switch module 12 comprises a second switch tube 120, and the conversion module 13 comprises a transient switch 130. The first end of the first switch tube 110 is electrically connected with the third end of the switch unit 20, the control end of the first switch tube 110 is electrically connected with the first end of the transient switch 130, and the second end of the transient switch 130 is electrically connected with the first end of the second switch tube 120. The first end of the second switch tube 120 is also electrically connected with the power supply (the first end of the switch unit 20), the control end of the second switch tube 120 is electrically connected with the power supply output end (the second end of the switch unit 20), and the second end of the second switch tube 120 and the second end of the first switch tube 110 are grounded.

[0061] The switch unit 20 comprises a third switch tube 21. The control end of the third switch tube 21 is electrically connected with the control unit 10 (the third end of the first switch tube 110), the first end of the third switch tube 21 is electrically connected with the power supply (the first end of the switch unit 20), and the second end of the third switch tube 21 is electrically connected with the power supply output end (the second end of the switch unit 20).

[0062] In an embodiment of the present application, the first switch tube 110 is a first transistor Q2, the second switch tube 120 is a second transistor Q3, and the third switch tube 21 is a field effect tube Q1. The base of the first transistor Q2 is the control end of the first switch tube 110, the collector of the first transistor Q2 is the first end of the first switch tube 110, and the emitter of the first transistor Q2 is the second end of the first switch tube 110. The base of the second transistor Q3 is the control end of the second switch tube 120, the collector of the second transistor Q3 is the first end of the second switch tube 120, and the emitter of the second transistor Q3 is the second end of the second switch tube 120. The gate of the field effect tube Q1 is the control end of the third switch tube 21, the source of the field effect tube Q1 is the first end of the third switch tube 21, and the drain of the field effect tube Q1 is the second end of the third switch tube 21.

[0063] Hereinafter, the voltage input end Vin refers to the first end of the switch unit 20, and the voltage output end Vout refers to the second end of the switch unit 20.

[0064] Please refer to Figure 2 , when the voltage input end Vin is connected with the power supply, the field effect tube Q1, the first transistor Q2 and the third transistor Q3 are all in the off state. As can be seen from Figure 2 , the point A and the point D are connected with the voltage input end Vin, and the point A and the point D are both high potential. The point B and the point C are connected with the voltage output end Vout, and the point B and the point C are both low potential.

[0065] When the instantaneous switch 130 is pressed at the first time, at the moment when the instantaneous switch 130 is closed, the circuit between the point B and the point D is conducted, so that the point B changes from low potential to high potential. Due to the characteristics of the transistor itself, the first transistor Q2 is turned on, and the point A changes from high potential to low potential. Due to the characteristics of the field effect tube itself, the field effect tube Q1 is turned on. At this time, the current of the input voltage input end Vin will flow to the voltage output end Vout through the field effect tube Q1, that is, the switch unit 20 establishes the electrical connection between the power supply and the power supply output end.

[0066] When the momentary switch 130 is released, the circuit between the B point and the D point is disconnected, the B point maintains a high potential state, and the first transistor Q2 and the field effect transistor Q1 remain in the conducting state, so that the power supply and the power supply output end are always connected. At this time, the C point is connected with the power supply output end (voltage output end Vout), so that the C point changes from low potential to high potential, so that the second transistor Q3 is turned on, and the D point changes from high potential to low potential.

[0067] When the momentary switch 130 is pressed at the second time (the second time is later than the first time), at the moment when the momentary switch 130 is closed, the circuit between the B point and the D point is connected again, so that the B point changes from high potential to low potential, the first transistor Q2 is cut off, and the A point changes from low potential to high potential, so that the field effect transistor Q1 is cut off. At this time, the current of the input voltage input end Vin will not flow to the voltage output end Vout through the field effect transistor Q1, that is, the switch unit 20 disconnects the electrical connection between the power supply and the power supply output end.

[0068] When the momentary switch 130 is released, the circuit between the B point and the D point is disconnected, the B point maintains a low potential state, and the first transistor Q2 and the field effect transistor Q1 remain in the cut-off state, so that the power supply and the power supply output end are always disconnected. Until the momentary switch 130 is pressed again at the next moment, the potential of the B point changes, thereby changing the potential of the A point to switch the connection state between the power supply and the power supply output end. The A point is the first end of the first switch tube 110, and the B point is the control end of the first switch tube 110.

[0069] In summary, in the switch circuit 100, the potential of the control end of the first switch tube 110 is changed by the momentary switch 130 in the control unit 10, so that the potential of the first end of the first switch tube 110 is changed, so that the signal output end of the control unit 10 outputs different level signals, and the switch unit 20 switches the connection state between the power supply and the power supply output end according to the received different level signals. When the load connected with the power supply output end needs to be in a normal working state, the control unit 10 can control the switch unit 20 to establish the connection between the power supply and the power supply output end, so that the power supply can provide working voltage for the load. When the load does not need to work, the control unit 10 can control the switch unit 20 to disconnect the connection between the power supply and the power supply output end, so that the load no longer generates power consumption.

[0070] Please refer to Figure 1 , the switch circuit 100 further comprises a power consumption unit 30 electrically connected with the control unit 10. When the third end of the switch unit 20 receives the second level signal to disconnect the electrical connection between the power supply and the power supply output end, the power consumption unit 30 is used to consume the current in the control unit 10.

[0071] Please refer to Figure 2In the embodiment, the power consumption unit 30 includes a diode 31 electrically connected to the control unit 10. One end of the diode 31 is electrically connected to the first switch tube 110 and the second switch tube 120, and the other end is in a high potential state. When the third end of the switch unit 20 receives the second level signal to disconnect the electrical connection between the power supply and the power supply output end, the current in the control unit 10 flows through the diode 31, so that the diode 31 emits light, thereby depleting the current in the control unit 10, so that the second switch tube 120 is in an off state, preventing the second switch tube 120 from being misdirected on to cause circuit damage, and improving the stability of the circuit.

[0072] Please refer to Figure 3 The embodiment of the application further provides a kind of intelligent equipment 1, including power supply 200, switch circuit 100 and load 300.Switch circuit 100 is electrically connected with power supply 200 and load 300 respectively, for switching the connection state between power supply 200 and load 300.

[0073] In switch circuit 100, the first end of switch unit 20 is electrically connected to power supply 200, the second end of switch unit 20 is electrically connected to load, and the third end of switch unit 20 is electrically connected to control unit 10.When control unit 10 outputs first level signal, switch unit 20 establishes the electrical connection between power supply 200 and load 300, power supply 200 supplies power for load 300, and load 300 can execute corresponding function;When control unit 10 outputs second level signal, switch unit 20 disconnects the electrical connection between power supply 200 and load 300, and power supply 200 stops supplying power for load 300, and load 300 does not work.

[0074] In the embodiment, the intelligent equipment 1 is a desktop computer, and the load is a display screen control panel on the desktop computer display. When the switch circuit 100 is applied to the desktop computer, if the desktop computer is in sleep state, the switch circuit 100 can disconnect the electrical connection between the power supply and the power supply output end, at this time, the display screen control panel provided with voltage by the power supply output end will no longer work, thereby saving electric energy and reducing the overall power consumption of the desktop computer in sleep state. In other embodiments of the application, the intelligent equipment 1 can also be a notebook computer, and the load can also be a circuit for realizing network port function in the notebook computer.

[0075] When the load 300 does not need to work, the application disconnects the electrical connection between the power supply 200 and the load 300 in the intelligent equipment 1 through the switch circuit 100, thereby reducing the overall power consumption of the intelligent equipment 1, which is beneficial to save electric energy when using the intelligent equipment 1.

[0076] In this embodiment, "the control unit 10 outputs a first level signal" means that the signal output end of the control unit 10 is at low potential, and "the control unit 10 outputs a second level signal" means that the signal output end of the control unit 10 is at high potential. The "high potential" means the voltage that can make the transistor and field effect transistor in the circuit conduct, and the "low potential" means the voltage that cannot make the transistor and field effect transistor in the circuit conduct.

[0077] Those skilled in the art should understand that the above embodiments are only used to illustrate the present application, but not as a limitation to the present application, and as long as the above embodiments are within the spirit and scope of the present application, any suitable changes and variations made to the above embodiments are within the scope of the present application.

Claims

1. A switching circuit, characterized by, The application relates to a power supply control device. The application comprises: a control unit for outputting a first level signal or a second level signal; and a switch unit, a first end of the switch unit being electrically connected with a power supply, a second end of the switch unit being a power supply output end, and a third end of the switch unit being electrically connected with the control unit; 2. The switching circuit of claim 1, wherein when the third end of the switch unit receives the first level signal, the electrical connection between the power supply and the power supply output end is established; when the third end of the switch unit receives the second level signal, the electrical connection between the power supply and the power supply output end is disconnected. The control unit comprises a first switch module, a second switch module and a conversion module, a first end of the first switch module is electrically connected with the third end of the switch unit, a third end of the first switch module is electrically connected with a first end of the conversion module, a second end of the conversion module is electrically connected with a first end of the second switch module, the first end of the second switch module is also electrically connected with the power supply, a third end of the second switch module is electrically connected with the power supply output end, and a second end of the second switch module and a second end of the first switch module are grounded; 3. The switching circuit of claim 2, wherein, the conversion module is used for changing the potential of the third end of the first switch module, so that the control unit outputs the first level signal or the second level signal. when the conversion module makes the third end of the first switch module high, the control unit outputs the first level signal; 4. The switching circuit of claim 2, wherein when the conversion module makes the third end of the first switch module low, the control unit outputs the second level signal. The first switch module comprises a first switch tube, the second switch module comprises a second switch tube, and the conversion module comprises a transient switch; a first end of the first switch tube is electrically connected with the third end of the switch unit, a control end of the first switch tube is electrically connected with a first end of the transient switch, a second end of the transient switch is electrically connected with a first end of the second switch tube, 5. The switching circuit of claim 4, wherein, a first end of the second switch tube is also electrically connected with the power supply, a control end of the second switch tube is electrically connected with the power supply output end, and a second end of the second switch tube and a second end of the first switch tube are grounded. The first switch tube is a first transistor, the second switch tube is a second transistor, a base of the first transistor is the control end of the first switch tube, a collector of the first transistor is the first end of the first switch tube, and an emitter of the first transistor is the second end of the first switch tube; 6. The switching circuit of claim 1, wherein, a base of the second transistor is the control end of the second switch tube, a collector of the second transistor is the first end of the second switch tube, and an emitter of the second transistor is the second end of the second switch tube. The switch unit comprises a third switch tube, a control end of the third switch tube is electrically connected with the control unit, a first end of the third switch tube is electrically connected with the power supply, and a second end of the third switch tube is electrically connected with the power supply output end.

7. The switching circuit of claim 6, wherein, The third switch tube is a field effect tube, a gate of the field effect tube is a control end of the third switch tube, a source of the field effect tube is a first end of the third switch tube, and a drain of the field effect tube is a second end of the third switch tube.

8. The switching circuit of claim 1, wherein, The switching circuit further comprises a power consumption unit electrically connected with the control unit. When the third end of the switching unit receives the second level signal to disconnect the electrical connection between the power supply and the power supply output end, the power consumption unit is configured to consume the current in the control unit.

9. The switching circuit of claim 8, wherein, The power consumption unit comprises a diode electrically connected with the control unit. When the third end of the switching unit receives the second level signal to disconnect the electrical connection between the power supply and the power supply output end, the current in the control unit flows through the diode, so that the diode emits light, thereby consuming the current in the control unit.

10. A smart device, comprising: Comprise: a power supply; a load; and The switching circuit according to any one of claims 1-9, electrically connected with the power supply and the load respectively, is configured to switch the connection state between the power supply and the load.

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