CN217770046U - Power switch circuit and electronic equipment - Google Patents
Power switch circuit and electronic equipment Download PDFInfo
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- CN217770046U CN217770046U CN202221709662.2U CN202221709662U CN217770046U CN 217770046 U CN217770046 U CN 217770046U CN 202221709662 U CN202221709662 U CN 202221709662U CN 217770046 U CN217770046 U CN 217770046U
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Abstract
The present disclosure relates to circuit-related technologies, and in particular, to a power switch circuit and an electronic device. Wherein, power switching circuit includes: the device comprises a switch module, a power utilization module and a detection module; the switch module is respectively connected with the power utilization module and the detection module, and the detection module is connected with the power utilization module; the switch module is used for being connected with the power supply module and switching the on-off state between the power supply module and the power utilization module; and the detection module is used for detecting the working state signal of the power utilization module, and if the detection module does not detect the working state signal, the detection module outputs a working maintaining signal to the switch module so that the switch module maintains the conduction state between the power supply module and the power utilization module according to the working maintaining signal. According to the arrangement, within the preset time after the power utilization module fails, the power module and the power utilization module are in a conducting state, the power module can supply power for the power utilization module, and the power failure problem caused by the temporary failure of the power utilization module is avoided.
Description
Technical Field
The present disclosure relates to circuit-related technologies, and in particular, to a power switch circuit and an electronic device.
Background
With the continuous development of circuit control technology, the requirements of various electric equipment on the power supply are increased day by day, how to ensure the power supply to continuously supply power to the electric equipment, and the problem of urgent need to be solved is solved by avoiding the unexpected power failure caused by the fluctuation of the working state of the electric equipment.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is desirable to provide a power switching circuit and an electronic device.
The embodiment of the application is realized by adopting the following technical scheme:
the embodiment of the application provides a power switch circuit, includes: the device comprises a switch module, a power utilization module and a detection module; wherein the content of the first and second substances,
the switch module is respectively connected with the power utilization module and the detection module, and the detection module is connected with the power utilization module;
the switch module is connected with the power supply module and used for switching the on-off state between the power supply module and the electricity utilization module;
and the detection module is used for detecting the working state signal of the power utilization module, and if the detection module does not detect the working state signal, the detection module outputs a working maintaining signal to the switch module so that the switch module maintains the conduction state between the power supply module and the power utilization module according to the working maintaining signal.
In one embodiment, the switch module includes a first state and a second state, and the switch module is specifically configured to turn on a connection between the power supply module and the power consuming module if the switch module is in the first state, and turn off the connection between the power supply module and the power consuming module if the switch module is in the second state.
In one embodiment, the power utilization module is further configured to output an operation maintaining signal to the switch module to maintain the switch module in the first state if the power utilization module is in the operating state.
In one embodiment, the switch module is connected with the output end of the power supply module, and the switch module is respectively connected with the power supply end of the power utilization module and the maintenance signal output end of the power utilization module;
the detection module is connected with the state signal output end of the power utilization module, and the maintaining signal output end of the detection module is connected with the switch module.
In one embodiment, a switch module includes: a switch unit and a key unit;
the switch unit is respectively connected with the output end of the power supply module and the power supply end of the power utilization module, and is respectively connected with the maintaining signal output end of the power utilization module and the maintaining signal output end of the detection module;
the key unit is connected with the switch unit and used for outputting a first state voltage signal to the switch unit if the key unit is triggered so as to enable the switch unit to conduct connection between the power supply module and the power utilization module according to the first state voltage signal.
In one embodiment, the key unit is further connected to the power consumption module, and the key unit is further configured to output a first state voltage signal to the power consumption module if the key unit is triggered, so that the electric module stops outputting the operation maintaining signal to the switch unit according to the first state voltage signal.
In one embodiment, the switching unit includes a first switching unit and a second switching unit;
the first switch unit is connected with the output end of the power supply module and the power supply end of the electricity utilization module respectively, and is also connected with the key unit, and the first switch unit is used for conducting connection between the power supply module and the electricity utilization module if receiving a first state voltage signal output by the key unit;
the second switch unit is connected with the first switch unit and respectively connected with a maintaining signal output end of the power utilization module and a maintaining signal output end of the detection module, and is used for outputting a first state voltage signal to the first switch unit if receiving a work maintaining signal so as to enable the first switch unit to be connected between the power supply module and the power utilization module according to the first state voltage signal, and outputting a second state voltage signal to the first switch unit if not receiving the work maintaining signal so as to enable the first switch unit to be disconnected between the power supply module and the power utilization module according to the second state voltage signal.
In one embodiment, the first switching unit includes: the MOS transistor comprises a first MOS transistor and a first resistor; the second switching unit includes: a second MOS transistor;
the first pole of the first MOS tube is connected with the power supply module;
the second pole of the first MOS tube is connected with the power supply end of the power utilization module;
the control electrode of the first MOS tube is connected with the second electrode of the second MOS tube;
the first end of the first resistor is connected with the first pole of the first MOS tube;
the second end of the first resistor is connected with the control electrode of the first MOS tube;
the first pole of the second MOS tube is grounded;
and the control electrode of the second MOS tube is respectively connected with the maintaining signal output end of the power utilization module and the maintaining signal output end of the detection module.
In one embodiment, the key unit is connected with the detection end of the electricity utilization module, and if the key unit is triggered, the key unit outputs a first state voltage signal to the detection end of the electricity utilization module;
the power utilization module further comprises a timing unit, wherein the timing unit is used for recording the duration of the first state voltage signal received by the detection end of the power utilization module, and switching the current working state of the power utilization module if the duration reaches a preset value.
In one embodiment, the key unit includes: a key switch and a diode;
the first end of the key switch is grounded;
the second end of the key switch is connected with the cathode of the diode;
the anode of the diode is connected with the switch unit;
the anode of the diode is also connected with the detection end of the electricity utilization module and is used for outputting a first state voltage signal to the detection end of the electricity utilization module if the key switch is triggered.
In one embodiment, the reset signal output end of the detection module is connected with the reset end of the power utilization module;
the detection module is further used for sending a reset signal to the power utilization module if the detection module does not detect the working state signal, and the reset signal is used for resetting the power utilization module.
An embodiment of the present application further provides an electronic device, including: the power switch circuit is provided. In the scheme provided by the application, when the power utilization module breaks down, the power utilization module cannot send a working maintaining signal to the switch module to control the continuous conduction between the power supply module and the power utilization module, and cannot send a working state signal to the detection module, at the moment, the detection module cannot acquire the working state signal, and outputs the working maintaining signal with preset duration to the switch module, so that the conduction state between the power supply module and the power utilization module is maintained within the preset duration. According to the arrangement, within the preset time after the power utilization module fails, the power module and the power utilization module are in a conducting state, the power module can supply power for the power utilization module, and the problem that the power supply cannot continuously supply power to the power utilization module due to the temporary failure of the power utilization module is solved.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a power switching circuit;
fig. 2 is a schematic structural diagram of a power switching circuit in another embodiment.
Reference numerals:
1. a switch module; 11. A switch unit; 12. A key unit;
2. a power utilization module; 3. A detection module;
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Summary of the application
Along with the continuous development of circuit control technology, the requirement of various electric equipment to the power increases day by day, how to ensure the power and to the continuous power supply of electric equipment, avoid because the unexpected outage that leads to of electric equipment operating condition's fluctuation becomes the problem that awaits a urgent need to be solved.
In order to solve the above problem, an embodiment of the present application provides a power switch circuit, which is provided with a detection module, when a power utilization module fails, the detection module cannot acquire a working state signal, and at this time, the detection module outputs a working maintenance signal with a preset duration to a switch module, so as to maintain a conduction state between the power module and the power utilization module within the preset duration. According to the arrangement, within the preset time after the power utilization module fails, the power module and the power utilization module are in a conducting state, the power module can supply power for the power utilization module, and the problem that the power supply cannot continuously supply power to the power utilization module due to the temporary failure of the power utilization module is solved.
Exemplary Circuit
Fig. 1 is a schematic structural diagram of a power switching circuit in one embodiment. Referring to fig. 1, the power switching circuit includes:
the system comprises a switch module 1, a power utilization module 2 and a detection module 3; wherein the content of the first and second substances,
the switch module 1 is respectively connected with the power utilization module 2 and the detection module 3, and the detection module 3 is connected with the power utilization module 2;
the switch module 1 is used for being connected with the power supply module and switching the on-off state between the power supply module and the electricity utilization module 2;
the detection module 3 is configured to detect a working state signal of the power consumption module 2, and if the detection module 3 does not detect the working state signal, output a working maintenance signal to the switch module 1, so that the switch module 1 maintains a conduction state between the power supply module and the power consumption module 2 according to the working maintenance signal.
In the scheme that this application provided, when the power consumption module breaks down, the power consumption module can't send the operating maintenance signal with control power module and power consumption module between the continuous switch-on in order to the switch module, also can't send the operating condition signal to detection module, and at this moment, detection module can't acquire the operating condition signal, to the switch module output work maintenance signal of predetermineeing for a long time to keep the conducting state between power module and the power consumption module in predetermineeing for a long time. According to the arrangement, within the preset time after the power utilization module fails, the power module and the power utilization module are in a conducting state, the power module can supply power for the power utilization module, and the problem that the power supply cannot continuously supply power to the power utilization module due to the temporary failure of the power utilization module is solved.
In one embodiment, the reset signal output end of the detection module 3 is connected with the reset end of the power utilization module 2;
the detection module 3 is further configured to send a reset signal to the power consumption module 2 if the detection module 3 does not detect the operating state signal, where the reset signal is used to reset the power consumption module 2.
So set up, after the power consumption module trouble, detection module can pass through reset signal output end, through reset signal power consumption module that resets for power consumption module can resume normal work.
In one embodiment, the switch module 1 includes a first state and a second state, and the switch module 1 is specifically configured to, if the switch module 1 is in the first state, turn on the connection between the power supply module and the power consumption module 2, and if the switch module 1 is in the second state, turn off the connection between the power supply module and the power consumption module 2. So set up, through the connected state of change over switch module's state control power module and power module.
It should be noted that, in the field of battery-type devices, in practical applications, in order to save power consumption and prolong service time, power of the device needs to be cut off in transportation and non-operation situations, and in a general scheme, the power cut-off of such a device is only to turn off most of the power-using modules of the device. Rather than powering down the entire device. In this case, the battery may still weakly power the device, causing a loss of battery power. The scheme that this application provided can pass through in, the state of change over switch module for the whole outage of equipment avoids the battery to supply power for equipment.
In the scheme provided by the application, the switch module is in the first state only when receiving the work maintaining signal. And if the switch module does not receive the work maintaining signal, the switch module is in a second state. Based on this, in order to make the power supply can continuously supply power to the device, the switch module needs to be continuously in the first state, and at this time, the power utilization module needs to continuously output the operation maintaining signal to the switch module. In the scheme provided based on this application, the power consumption module 2 is further configured to output a work maintaining signal to the switch module 1 if the power consumption module 2 is in a working state, so as to maintain the switch module 1 in the first state. So, when the switch module continuously receives the work maintenance signal that the power consumption module provided, can continuously be in first state, switch on the connection between power consumption module and the power module for power module is the power supply of power consumption module.
Specifically, the switch module 1 is connected with the output end of the power supply module, and the switch module 1 is respectively connected with the power supply end of the power utilization module 2 and the maintaining signal output end of the power utilization module 2; the detection module 3 is connected with the state signal output end of the power utilization module 2, and the maintaining signal output end of the detection module 3 is connected with the switch module 1. So set up, switch module can be through switching on and closing being connected of power module's output and power module's supply end to switch on or cut off power module and with being connected between the power module. Meanwhile, the switch module receives a work maintaining signal sent by the power utilization module through a maintaining signal output end of the power utilization module. The detection module receives the working state signal sent by the power utilization module through the state signal output end of the power utilization module. When the detection module does not detect the working state signal, the working maintaining signal is output to the switch module through the maintaining signal output end of the detection module.
In one embodiment, the switch module 1 comprises: a switch unit 11 and a key unit 12;
the switch unit 11 is respectively connected with the output end of the power supply module and the power supply end of the power utilization module 2, and is respectively connected with the maintaining signal output end of the power utilization module 2 and the maintaining signal output end of the detection module 3;
the key unit 12 is connected to the switch unit 11, and the key unit 12 is configured to output a first state voltage signal to the switch unit 11 if the key unit 12 is triggered, so that the switch unit 11 switches on the connection between the power module and the power module 2 according to the first state voltage signal.
With the arrangement, a user can issue an instruction through the key unit, so that man-machine interaction is realized, and whether the equipment is powered off or not is controlled. The user can press the key unit, and the key unit is triggered this moment, exports first state voltage signal to the switch element for the switch element switches on the connection of power module and power consumption module. The power module supplies power to the power utilization module. And after the power utilization module is started, the power utilization module sends a work maintaining signal to the switch module. The power utilization module and the power supply module are conducted by controlling the switch module to be in the first state.
In one embodiment, the key unit 12 is further connected to the power consumption module 2, and the key unit 12 is further configured to output a first state voltage signal to the power consumption module 2 if the key unit 12 is triggered, so that the power consumption module 2 stops outputting the operation maintaining signal to the switch unit 11 according to the first state voltage signal.
So set up, whether can detect the key unit with the electric module and pressed, and then the electric module can be according to the state generation different instructions that the key unit was pressed. The pressed state may include a long press, a short press, a double press, a triple press, and so on. Specifically, when the key unit is pressed for more than the preset time period, the pressed state is considered as a long press, and at this time, an instruction for controlling the power utilization module to shut down may be generated.
Referring to fig. 2, in one embodiment, the switching unit 11 includes a first switching unit and a second switching unit;
the first switch unit is respectively connected with the output end of the power supply module and the power supply end of the electricity utilization module 2, is also connected with the key unit 12, and is used for conducting connection between the power supply module and the electricity utilization module 2 if receiving a first state voltage signal output by the key unit 12; the second switch unit is connected with the first switch unit and respectively connected with a maintaining signal output end of the power utilization module 2 and a maintaining signal output end of the detection module 3, and the second switch unit is used for outputting a first state voltage signal to the first switch unit if receiving a work maintaining signal so as to enable the first switch unit to be connected between the power supply module and the power utilization module 2 according to the first state voltage signal, and outputting a second state voltage signal to the first switch unit if not receiving the work maintaining signal so as to enable the first switch unit to be disconnected between the power supply module and the power utilization module 2 according to the second state voltage signal.
Specifically, the first switching unit includes: the first MOS transistor Q1 and the first resistor R1; the second switching unit includes: a second MOS transistor Q2;
the first pole of the first MOS tube Q1 is connected with the power supply module;
the second pole of the first MOS tube Q1 is connected with the power supply end of the power utilization module 2;
the control electrode of the first MOS transistor Q1 is connected with the second electrode of the second MOS transistor Q2;
the control electrode of the first MOS tube Q1 is connected with the key unit 12;
the first end of the first resistor R1 is connected with the first pole of the first MOS transistor Q1;
the second end of the first resistor R1 is connected with the control electrode of the first MOS transistor Q1;
the first pole of the second MOS tube Q2 is grounded;
and the control electrode of the second MOS tube Q2 is respectively connected with the maintaining signal output end of the power utilization module 2 and the maintaining signal output end of the detection module 3.
In practical application, when the key unit is pressed, a first state voltage signal is sent to a control electrode of the first MOS tube; when the control electrode of the first MOS transistor receives the first state voltage signal, the first electrode and the second electrode of the first MOS transistor are turned on, and at this time, the "power module connected to the first electrode of the first MOS transistor" and the "power module connected to the second electrode of the first MOS transistor" are communicated. The power module supplies power for the power utilization module, and the power utilization module starts to work. And the power utilization module sends a work maintaining signal to the control electrode of the second MOS tube. The first pole and the second pole of the second MOS tube are communicated, and the second pole of the second MOS tube sends a first state voltage signal to the control pole of the first MOS tube, so that the first pole and the second pole of the first MOS tube are conducted. When the power utilization module is suddenly shut down, the power utilization module stops sending the first work maintaining signal and the work state signal, at the moment, the detection module does not detect the work state signal, and outputs the work maintaining signal to the control electrode of the second MOS tube, so that the switch module maintains the conduction state between the power supply module and the power utilization module according to the work maintaining signal.
In one embodiment, the key unit is connected with the detection end of the electricity utilization module, and if the key unit is triggered, the key unit outputs the first state voltage signal to the detection end of the electricity utilization module; the power utilization module further comprises a timing unit, the timing unit is used for recording the duration of the first state voltage signal received by the detection end of the power utilization module, and if the duration reaches a preset value, the current working state of the power utilization module is switched.
So set up, when the key unit does not reach the time limit of presetting, promptly: the key unit is not pressed for a long time, the current working state of the power utilization module cannot be switched, and the power utilization module cannot stop outputting a working maintaining signal to the switch module. Thus, short-press operations of the key unit, such as single-click, double-click, triple-click and the like, can be recognized by the electricity utilization module without affecting the current working state of the electricity utilization module, and actions corresponding to the operations can be performed.
In one embodiment, the key unit includes: a key switch SW1 and a diode D1;
the first end of the key switch SW1 is grounded;
the second end of the key switch SW1 is connected with the cathode of the diode D1;
the anode of the diode D1 is connected with the switch unit;
the anode of the diode D1 is further connected to the detection end of the power utilization module, and is configured to output a first state voltage signal to the detection end of the power utilization module by the anode of the diode D1 if the key switch SW1 is triggered.
So configured, when the key switch SW1 is pressed, the key unit may send a low voltage signal to the key switch SW1 and the diode D1 as a first state voltage signal. Correspondingly, when the first pole and the second pole of the second MOS transistor Q2 are conducted, a low voltage signal is sent to the control pole of the first MOS transistor Q1 as a first state voltage signal.
Specifically, the key switch may be a schottky diode; the second end of the key switch is connected with the cathode of the Schottky diode; a first positive electrode of the Schottky diode BAT54C is a first end of the key unit; the second positive electrode of the schottky diode BAT54C is the third end of the key unit.
In an embodiment, in a scheme provided by the present application, the first MOS transistor may be a P-MOS diode, and the second MOS transistor may be an N-MOS diode, and a power-on process includes: the grid that presses key switch (generally long press the button) first MOS pipe Q1 draws low for the low level, first MOS pipe Q1 switches on, power consumption Module (MCU) is gone up electricity, power consumption module gives second MOS pipe output high level at once, the grid of second MOS pipe Q2 is the high level, second MOS pipe Q2 switches on, therefore Q1's grid lasts for the low level, loosen key switch this moment after second MOS pipe Q1 also can switch on always, guarantee that power output lasts always.
Shutdown process: the key is pressed (generally, the key is pressed for a long time), the detection end of the MCU detects a low level, the MCU immediately outputs the low level to the second MOS tube Q2, the grid of the second MOS tube Q2 is pulled down to be the low level, the second MOS tube Q2 is cut off, the grid of the first MOS tube Q1 is recovered to be the high level at the moment, the first MOS tube Q1 is cut off, and the power module outputs power failure.
And (4) key functions: after the power-on, the key can still be used for various single-click, double-click and other functions, the pressing state of the key switch is received through the detection end of the MCU, whether the key switch is pressed for a long time is judged based on the timing unit, if the key switch is not pressed for the long time, the current level output to the second MOS transistor by the MCU is not changed, namely, the short-time pressing of the key has no influence on the connection or disconnection of Q1 and Q2, and the key function can be normally used).
Further, when the MCU of the power utilization module is down, the power utilization module cannot send a working maintenance signal to the second MOS transistor to control continuous conduction between the power supply module and the power utilization module, and cannot send a working status signal to the detection module, at this time, the detection module cannot acquire the working status signal, and outputs the working maintenance signal for a preset duration to the second MOS transistor to maintain the conduction state between the power supply module and the power utilization module for the preset duration. Meanwhile, the detection module sends a reset signal to the power utilization module to control the power utilization module to recover to normal as soon as possible.
Specifically, the capacitor C1 performs filtering; the resistor R1, the resistor R2, the resistor R3, the resistor R4 and the resistor R5 divide voltage in the circuit to protect the circuit and assist other devices to complete preset functions.
Exemplary device
The present application further provides an electronic device that includes at least a power switch circuit as in the exemplary circuit.
Therefore, when the power utilization module in the power switch circuit breaks down, the power utilization module cannot send a working maintaining signal to the switch module to control continuous conduction between the power supply module and the power utilization module, and cannot send a working state signal to the detection module, at the moment, the detection module cannot acquire the working state signal, and outputs the working maintaining signal with preset duration to the switch module so as to maintain the conduction state between the power supply module and the power utilization module within the preset duration. According to the arrangement, within the preset time after the power utilization module fails, the power module and the power utilization module are in a conducting state, the power module can supply power for the power utilization module, and the problem that the power supply cannot continuously supply power to the power utilization module due to the temporary failure of the power utilization module is solved.
It should be noted that the terms "first," "second," and the like, as used herein, are not intended to limit the specific order, but merely to distinguish one element or function from another.
The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, and all should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are exemplary and should not be construed as limiting the present application and that changes, modifications, substitutions and alterations in the above embodiments may be made by those of ordinary skill in the art within the scope of the present application.
Claims (12)
1. A power switching circuit, comprising: the device comprises a switch module, a power utilization module and a detection module; wherein the content of the first and second substances,
the switch module is respectively connected with the electricity utilization module and the detection module, and the detection module is connected with the electricity utilization module;
the switch module is used for being connected with the power supply module and switching the on-off state between the power supply module and the electricity utilization module;
the detection module is used for detecting a working state signal of the power utilization module, and if the detection module does not detect the working state signal, a working maintaining signal is output to the switch module, so that the switch module maintains the conduction state between the power supply module and the power utilization module according to the working maintaining signal.
2. The power switching circuit of claim 1, wherein the switch module comprises a first state and a second state, and the switch module is specifically configured to turn on the connection between the power module and the power consuming module if the switch module is in the first state, and turn off the connection between the power module and the power consuming module if the switch module is in the second state.
3. The power switch circuit of claim 2, wherein the power utilization module is further configured to output the operation maintaining signal to the switch module to maintain the switch module in the first state if the power utilization module is in the operating state.
4. The power switch circuit of claim 1, wherein the switch module is connected to the output of the power module, and the switch module is respectively connected to the power supply terminal of the power utilization module and the maintenance signal output terminal of the power utilization module;
the detection module is connected with the state signal output end of the power utilization module, and the maintaining signal output end of the detection module is connected with the switch module.
5. The power switching circuit of claim 4, wherein the switching module comprises: a switch unit and a key unit;
the switch unit is respectively connected with the output end of the power supply module and the power supply end of the electricity utilization module, and is respectively connected with the maintaining signal output end of the electricity utilization module and the maintaining signal output end of the detection module;
the key unit is connected with the switch unit, and the key unit is used for outputting a first state voltage signal to the switch unit if the key unit is triggered, so that the switch unit switches on the connection between the power supply module and the power utilization module according to the first state voltage signal.
6. The power switch circuit of claim 5, wherein the key unit is further connected to the power utilization module, and the key unit is further configured to output the first state voltage signal to the power utilization module if the key unit is triggered, so that the power utilization module stops outputting the operation maintaining signal to the switch unit according to the first state voltage signal.
7. The power switching circuit according to claim 5, wherein the switching unit includes a first switching unit and a second switching unit;
the first switch unit is respectively connected with the output end of the power supply module and the power supply end of the power utilization module, the first switch unit is also connected with the key unit, and the first switch unit is used for conducting the connection between the power supply module and the power utilization module if receiving the first state voltage signal output by the key unit;
the second switch unit is connected with the first switch unit and is respectively connected with a maintaining signal output end of the electricity utilization module and a maintaining signal output end of the detection module, and the second switch unit is used for outputting the first state voltage signal to the first switch unit if receiving the work maintaining signal, so that the first switch unit can conduct the connection between the power supply module and the electricity utilization module according to the first state voltage signal, and outputting the second state voltage signal to the first switch unit if not receiving the work maintaining signal, so that the first switch unit can break the connection between the power supply module and the electricity utilization module according to the second state voltage signal.
8. The power switching circuit according to claim 7, wherein the first switching unit comprises: the MOS transistor comprises a first MOS transistor and a first resistor; the second switching unit includes: a second MOS transistor;
the first pole of the first MOS tube is connected with the power supply module;
the second pole of the first MOS tube is connected with the power supply end of the power utilization module;
the control electrode of the first MOS tube is connected with the second electrode of the second MOS tube;
the first end of the first resistor is connected with the first pole of the first MOS tube;
the second end of the first resistor is connected with the control electrode of the first MOS tube;
the first pole of the second MOS tube is grounded;
and the control electrode of the second MOS tube is respectively connected with the maintaining signal output end of the electricity utilization module and the maintaining signal output end of the detection module.
9. The power switch circuit of claim 5, wherein the key unit is connected to the detection terminal of the power module, and if the key unit is triggered, the key unit outputs the first state voltage signal to the detection terminal of the power module;
the power utilization module further comprises a timing unit, the timing unit is used for recording the duration of the first state voltage signal received by the detection end of the power utilization module, and if the duration reaches a preset value, the current working state of the power utilization module is switched.
10. The power switching circuit of claim 9, wherein the key unit comprises: a key switch and a diode;
the first end of the key switch is grounded;
the second end of the key switch is connected with the cathode of the diode;
the anode of the diode is connected with the switch unit;
the anode of the diode is also connected with the detection end of the electricity utilization module and used for outputting the first state voltage signal to the detection end of the electricity utilization module if the key switch is triggered.
11. The power switching circuit according to any one of claims 1 to 10, wherein the reset signal output terminal of the detection module is connected to the reset terminal of the power consuming module;
the detection module is further configured to send a reset signal to the power utilization module if the detection module does not detect the operating state signal, where the reset signal is used to reset the power utilization module.
12. An electronic device, comprising: a power switching circuit according to any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202221709662.2U CN217770046U (en) | 2022-07-04 | 2022-07-04 | Power switch circuit and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221709662.2U CN217770046U (en) | 2022-07-04 | 2022-07-04 | Power switch circuit and electronic equipment |
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| CN217770046U true CN217770046U (en) | 2022-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221709662.2U Active CN217770046U (en) | 2022-07-04 | 2022-07-04 | Power switch circuit and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217770046U (en) |
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2022
- 2022-07-04 CN CN202221709662.2U patent/CN217770046U/en active Active
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