CN116192104B - Non-contact switching circuit with zero standby power consumption and electronic equipment - Google Patents
Non-contact switching circuit with zero standby power consumption and electronic equipment Download PDFInfo
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- CN116192104B CN116192104B CN202310147701.7A CN202310147701A CN116192104B CN 116192104 B CN116192104 B CN 116192104B CN 202310147701 A CN202310147701 A CN 202310147701A CN 116192104 B CN116192104 B CN 116192104B
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- 239000003990 capacitor Substances 0.000 claims abstract description 25
- 230000000087 stabilizing effect Effects 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000001976 improved effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
- H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
- H02M7/06—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
- H03K17/6871—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors the output circuit comprising more than one controlled field-effect transistor
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/0036—Means reducing energy consumption
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Rectifiers (AREA)
Abstract
The invention provides a non-contact type switching circuit with zero standby power consumption and electronic equipment. The switch circuit comprises a wireless charging transmitting end, a wireless charging receiving end and a controller. The rectifier bridge output end of the wireless charging receiving end is connected with the MOS tube Q1 and the MOS tube Q2, the grid electrode of the MOS tube Q2 is connected to the first output end of the controller, the source electrode of the MOS tube Q3 is connected with the positive electrode of the battery, the drain electrode of the MOS tube Q3 is used as the circuit output end of the switching circuit to supply power for the controller, the drain electrode of the MOS tube Q4 is connected to the grid electrode of the MOS tube Q3, the grid electrode of the MOS tube Q is connected to the second output end of the controller, the collector electrode of the triode Q5 is connected to the input end of the controller, the low-level signal is output through the second output end after the controller detects the waveform signal input by the Q5, the positive electrode of the capacitor C1 is connected with the drain electrode of the MOS tube Q1, the negative electrode of the capacitor C2 is grounded, the input end of the controller is configured to be pulled up input, the first output end is configured to be opened and leaked, and the second output end is configured to be pushed and pulled. The switch circuit is in a standby state without power supply, so that real zero standby power consumption is realized.
Description
Technical Field
The present invention relates to the field of electronic circuits, and in particular, to a non-contact switching circuit with zero standby power consumption and an electronic device.
Background
The electronic equipment powered by the battery works for a long time under severe conditions such as underwater, salt fog, dust, high humidity and the like, so that personnel are inconvenient to maintain, and the maintenance period is long. Under the condition of lacking manual maintenance, the phenomena of incapability of switching on and switching off and the like caused by mechanical switch failure can occur. In order to ensure the reliability of the switching on/off function, non-contact technologies such as radio, infrared, capacitive sensing, magnetic induction and the like are generally adopted.
Considering the economic cost and the operation complexity of the distribution and recovery equipment under severe conditions, a low-power control technology is generally adopted to reduce the standby power consumption of the equipment and prolong the service time of the electronic equipment. Taking underwater equipment as an example, some of these equipment needs to operate underwater for one to two years, and energy conservation and non-contact control are particularly important. In the prior art, the microcontroller is generally used for controlling the circuit system to enter the sleep mode, so that most of current consumption can be reduced, but the signal receiving or sensing circuit can be always in a working state or current flows, the loss is not negligible, and the battery can be exhausted under the long-time working condition, so that the power-on cannot be started and the like.
In addition, for environments such as underwater personnel maintenance inconvenience, the controlled state of the electronic equipment is often invisible, and in the repeated operation process, the on-off state of the underwater equipment is not easy to confirm, and the risk of misoperation exists.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a non-contact switching circuit with zero standby power consumption and an application of the switching circuit to electronic equipment. The switching circuit has high reliability, is particularly suitable for working environments which are inconvenient to directly control by personnel such as underwater, and can truly realize zero standby power consumption.
In order to achieve the above purpose, the present invention firstly provides a non-contact switching circuit with zero standby power consumption, and adopts the following technical scheme:
The non-contact switching circuit with zero standby power consumption comprises a wireless charging transmitting end, a wireless charging receiving end and a controller, wherein the wireless charging receiving end comprises:
a receiving end coil L2 which interacts with a transmitting end coil L1 of the wireless charging transmitting end;
a battery:
the rectifier bridge is characterized in that two input ends of the rectifier bridge are respectively connected with a first end and a second end of a receiving end coil L2;
the source electrode of the MOS tube Q1 is connected with the positive output end of the rectifier bridge;
The MOS tube Q2 is connected with the positive output end of the rectifier bridge through a resistor R2 and connected to the first output end of the controller to receive the switching control signal, and the drain electrode of the MOS tube Q2 is connected with the gate electrode of the MOS tube Q1 and connected with the positive output end of the rectifier bridge through the resistor R1;
the source electrode of the MOS tube Q3 is connected with the anode of the battery, and the drain electrode of the MOS tube Q3 is used as the circuit output end of the switching circuit and is used for supplying power to the controller;
the MOS tube Q4 is connected with the grid electrode of the MOS tube Q3 through a resistor R3, the source electrode of the MOS tube Q4 is grounded, the grid electrode of the MOS tube Q4 is connected with the second output end of the controller and receives an opening and closing control signal, and the grid electrode of the MOS tube Q4 is further connected with the drain electrode of the MOS tube Q1;
The base electrode of the triode Q5 is connected with the source electrode of the MOS tube Q1 through a circuit R7, the base electrode of the triode Q is grounded through a resistor R8, the collector electrode of the triode Q is connected to the input end of the controller, a waveform signal is input for the controller, the controller outputs a low-level signal through a second output end after detecting the waveform signal, and the emitter electrode of the triode Q is grounded;
The positive electrode of the capacitor C1 is connected with the drain electrode of the MOS tube Q1, and the negative electrode of the capacitor C1 is grounded;
The input end of the controller is configured as a pull-up input, the first output end is configured as an open-drain output, and the second output end is configured as a push-pull output.
In some embodiments of the invention, the rectifier bridge includes:
The diode D1 comprises a diode D1, a diode D2, a diode D3 and a diode D4, wherein the anode of the diode D1 is connected with the anode of the diode D2, the cathode of the diode D1 is connected with the first end of the receiving end coil and the anode of the diode D3, the cathode of the diode D2 is connected with the second end of the receiving end coil L2 and the anode of the diode D4, the anode of the diode D1 and the anode of the diode D4 are further grounded, and the cathode of the diode D3 and the cathode of the diode D4 are further connected to the source electrode of the MOS transistor Q1.
In some embodiments of the present invention, the device further comprises a diode D5 disposed between the controller and the MOS transistor Q4, wherein an anode thereof is connected to the second output terminal of the controller, receives the on control signal, and a cathode thereof is connected to the gate of the MOS transistor Q4.
In some embodiments of the present invention, the device further comprises a diode D6 disposed between the drain of the MOS transistor Q1 and the MOS transistor Q4, wherein the anode is connected to the drain of the MOS transistor Q1 and the cathode is connected to the gate of the MOS transistor Q4.
In some embodiments of the present invention, the device further includes a diode D7, an anode of which is connected to the drain of the MOS transistor Q1, and a cathode of which is connected to the anode of the battery.
In some embodiments of the invention, the capacitor C2 is further comprised of a positive electrode connected to the anode of the diode D5 and a negative electrode grounded.
In some embodiments of the present invention, the capacitor C3 is further comprised of a positive electrode connected to the anode of the diode D6 and a negative electrode connected to ground.
In some embodiments of the present invention, the capacitor further includes a capacitor C4, whose positive electrode is connected to the drain electrode of the MOS transistor Q3 and whose negative electrode is grounded.
In some embodiments of the present invention, the drain electrode of the MOS transistor Q3 is connected to the controller through a voltage stabilizing circuit.
Some embodiments of the present invention further provide an electronic device, where the electronic device employs the above-mentioned non-contact switching circuit with zero standby power consumption.
Compared with the prior art, the invention has the advantages and positive effects that:
The circuit has the advantages of simple structure, small volume, low cost, convenient integration, high reliability and strong environment adaptability, is favorable for improving the sealing grade of the electronic equipment in environments such as underwater, salt fog and the like, and has good application value. The whole set of on-off circuit is in a standby state without power supply, so that real zero standby power consumption is realized, and the service life of the electronic equipment is greatly prolonged. 3) The switching circuit adopts a non-contact switching mode, the switching function is realized through an external wireless charging triggering mode, and the problems of aging failure and the like of the mechanical switch are avoided.
Drawings
FIG. 1 is a schematic diagram of a switch circuit according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a switch circuit according to a second embodiment of the present invention;
fig. 3 is a schematic diagram of an input/output structure of a controller according to the present invention.
Detailed Description
The present invention will be specifically described below by way of exemplary embodiments. It is to be understood that elements, structures, and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
The first embodiment of the invention provides a non-contact switching circuit with zero standby power consumption, which can be mounted on electronic equipment, in particular to electronic equipment working under severe working conditions such as underwater and the like. The circuit can be used for non-contact control of electronic equipment, and when the equipment does not work, the circuit is in a standby state, and the power consumption is zero.
Referring first to fig. 1, a non-contact switching circuit with zero standby power consumption includes a wireless charging transmitting terminal, a wireless charging receiving terminal and a controller. The wireless charging transmitting end comprises a transmitting end coil L1, the wireless charging receiving end comprises a receiving end coil L2, and inductive electric energy is generated between the two coils through electromagnetic action. The working principle between the wireless charging transmitting end and the wireless charging receiving end belongs to the prior art and is not repeated.
The controller also includes two outputs (CTRL 1 and CTRL 2) and an INPUT (INPUT). Wherein the INPUT terminal is configured as a pull-up INPUT, the CTRL1 terminal is configured as an open drain output, and the CTRL2 terminal is configured as a push-pull output.
The switching circuit further includes the following functional units.
The battery is used as energy storage equipment, can supply power for the electronic equipment in the on state of the switch circuit, and can adopt a rechargeable battery or a disposable battery.
The rectifier bridge has two input ends connected to the first end and the second end of the receiving end coil L2 and negative output end connected to ground. The rectifier bridge is used for converting the alternating current output by the wireless charging coil L2 into direct current.
In some embodiments of the present invention, the specific structure of the rectifier bridge is as follows.
The diode D1 is connected with the anode of the diode D2, the cathode of the diode D1 is connected with the first end of the receiving end coil and the anode of the diode D3, the cathode of the diode D2 is connected with the second end of the receiving end coil L2 and the anode of the diode D4, the anode of the diode D1 and the anode of the diode D4 are further grounded, and the cathode of the diode D3 and the cathode of the diode D4 are positive output ends of the rectifier bridge.
The source electrode of the MOS tube Q1 is connected with the positive output end of the rectifier bridge, namely the cathode of the diode D3 and the cathode connecting end of the diode D4.
The MOS tube Q2 is connected with the positive output end of the rectifier bridge through the grid electrode, is connected to the first output end (CTRL 1) of the controller and receives the switching control signal, is connected with the grid electrode of the MOS tube Q1 through the drain electrode, and is grounded through the source electrode. A resistor R1 can be arranged between the source electrode of the MOS transistor Q1 and the drain electrode of the MOS transistor Q2, and a resistor R2 can be arranged between the gate electrode of the MOS transistor Q2 and the positive output end of the rectifier bridge. The output of the rectifier bridge is transmitted to the MOS tube Q2 after being pulled up by the resistor R2, and the MOS tube Q2 can be controlled to be conducted.
The source electrode of the MOS tube Q3 is connected with the anode of the battery, and the drain electrode of the MOS tube Q is used as the circuit output end of the switching circuit and is used for supplying power for the controller.
The MOS tube Q4 is characterized in that the drain electrode of the MOS tube Q3 is connected with the grid electrode of the battery, the source electrode of the MOS tube Q4 is grounded, the grid electrode of the MOS tube Q4 is connected with the second output end of the controller and receives an opening and closing control signal, the grid electrode of the MOS tube Q4 is further connected with the drain electrode of the MOS tube Q1, and a resistor R3 can be arranged between the grid electrode of the MOS tube Q4 and the positive electrode of the battery.
The triode Q5 is characterized in that a base electrode of the triode Q5 is connected with a source electrode of the MOS tube Q1 and is grounded, a collector electrode of the triode Q5 is connected to an INPUT end (INPUT) of a controller, a waveform signal is INPUT to the controller, the controller outputs a low-level signal through a second output end after detecting the waveform signal, an emitter electrode of the triode Q5 is grounded, a resistor R7 can be arranged between the base electrode of the triode Q1 and the source electrode of the MOS tube Q1, and a resistor R8 can be arranged between the base electrode of the triode Q and the ground.
The positive electrode of the capacitor C1 is connected with the drain electrode of the MOS tube Q1, and the negative electrode of the capacitor C is grounded;
The INPUT (INPUT) of the controller is configured as a pull-up INPUT, the first output (CTRL 1) is configured as an open drain output, and the second output (CTRL 2) is configured as a push-pull output.
In some embodiments of the present invention, the device further comprises a diode D5 disposed between the controller and the MOS transistor Q4, wherein an anode thereof is connected to the second output terminal (CTRL 2) of the controller, receives the on control signal, and a cathode thereof is connected to the gate of the MOS transistor Q4. A resistor R5 may be provided between the second output of the controller and the anode of the diode D5.
In some embodiments of the present invention, the device further comprises a diode D6 disposed between the drain of the MOS transistor Q1 and the MOS transistor Q4, wherein the anode is connected to the drain of the MOS transistor Q1 and the cathode is connected to the gate of the MOS transistor Q4. A resistor R6 may be further disposed between the drain of the MOS transistor Q1 and the anode of the diode D6.
Referring to fig. 2, in order to realize the charging function of the battery, in some embodiments of the present invention, the battery may be a rechargeable battery, and further includes a diode D7, the anode of which is connected to the drain of the MOS transistor Q1, and the cathode of which is connected to the anode of the battery. After the wireless charging transmitting unit is started, the current output from the drain electrode of the MOS tube Q1 can conduct the MOS tubes Q3 and Q4, so that a starting function is realized, the battery BAT can be charged, and the cruising ability is improved.
In some embodiments of the present invention, the capacitor C2 further comprises a positive electrode connected to the anode of the diode D5 and a negative electrode connected to the source and the gate of the MOS transistor Q4. Acting to stabilize the voltage and filter. A resistor R4 may be disposed between C2 and the gate of MOS transistor Q4.
In some embodiments of the present invention, the capacitor C3 is further comprised of a positive electrode connected to the anode of the diode D6 and a negative electrode connected to ground. Playing a role of filtering.
In some embodiments of the present invention, the capacitor further includes a capacitor C4, whose positive electrode is connected to the drain electrode of the MOS transistor Q3 and whose negative electrode is grounded.
Referring to fig. 3, in some embodiments of the present invention, a drain electrode of the MOS transistor Q3 is connected to a controller through a voltage stabilizing circuit, and is used for voltage stabilizing processing of power supplied by the controller.
The second embodiment of the present invention provides an electronic device, which includes the zero standby power consumption contactless switch circuit provided in the first embodiment.
The working flow of the non-contact switch circuit with zero standby power consumption provided by the invention is as follows.
In the initial state, the controller is not powered on, the output ends CTRL1 and CTRL2 and the INPUT end INPUT are in a high-resistance state, the MOS ends Q1, Q2, Q3 and Q4 are in a cut-off state, and VOUT has no voltage output.
After the wireless charging transmitting terminal is started, a wireless charging signal which is not subjected to specific modulation is transmitted, so that interaction is generated between the wireless transmitting terminal coil L1 and the receiving terminal coil L2 of the wireless receiving terminal, alternating current voltage is generated at two ends of the receiving terminal coil L2, and the alternating current voltage is converted into direct current through a rectifier bridge.
The positive output end of the rectifier bridge is respectively connected with the MOS tube Q1 and the MOS tube Q2, one path of the MOS tube Q2 is conducted through the grid voltage MOS tube Q2 of the MOS tube Q2 which is lifted by the resistor R2, so that the grid voltage of the MOS tube Q1 is pulled down, and the MOS tube Q1 is conducted. After the MOS tube Q1 is conducted, the grid voltage of the MOS tube Q4 is raised by current through the resistor R6 and the diode D6, the capacitors C1 and C3 play roles in stabilizing voltage and filtering, the MOS tube Q4 is conducted, the grid voltage of the MOS tube Q3 is pulled down, and the MOS tube Q3 is conducted. At this time, the battery circuit is turned on, and a high level is output through the drain of the MOS transistor Q3. The BAT voltage of the battery flows to the voltage output end VOUT through the MOS tube Q3, the voltage is supplied to the microcontroller through the voltage stabilizing circuit, the microcontroller is supplied with power after being conducted, and the microcontroller starts to work.
The base voltage of the triode Q5 is raised through the voltage division of the resistors R7 and R8, the triode Q5 is conducted, and the INPUT of the microcontroller is low level. The microcontroller then controls the CTRL2 output high. If the wireless charging transmitting unit is turned off at this time, the MOS transistors Q4 and Q3 can still keep on state, and the output terminal VOUT can always keep voltage output. As the charge stored in the capacitors C1, C3 gradually releases, the base voltage of transistor Q5 drops, transistor Q5 turns off and INPUT assumes a high level due to the pull-up action. The microcontroller sets the output CTRL1 as an open drain output and controls its output low level in preparation for shutdown detection.
After the wireless charging transmitting unit is started again, as the microcontroller CTRL1 is at a low level, the MOS transistors Q2 and Q1 cannot be turned on, and current cannot flow through the MOS transistor Q1, but the transistor Q5 is turned on, and at this time, the INPUT is at a low level. When the wireless charging transmit unit is turned off, the INPUT goes high. The time interval between the starting and the closing of the wireless charging transmitting unit is regulated, so that the INPUT generates a waveform with a specific pulse width, when the waveform is detected by the microcontroller, CTRL2 is controlled to output a low level, the capacitor C2 releases charge until the MOS tube Q4 is closed, the MOS tube Q3 is closed, and the voltage output of VOUT is stopped. When the voltage of the capacitor C4 drops to the voltage stabilizing circuit to stop outputting, the microcontroller is turned off, and CTRL1, CTRL2 and INPUT are restored to the high-resistance state.
In the starting-up state, wireless charging transmitting signals which are not subjected to specific modulation are transmitted for a plurality of times, and the starting-up state of the electronic equipment is not changed. Therefore, when the on-off state of the electronic equipment is not determined, the electronic equipment can be in the on-state by transmitting a section of wireless charging signal which is not subjected to specific modulation, and then the next operation is performed.
In the off state, the circuit is in a standby condition, power supply is not needed, and zero standby power consumption is realized.
The present invention is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present invention without departing from the technical content of the present invention still belong to the protection scope of the technical solution of the present invention.
Claims (10)
1. The non-contact switching circuit with zero standby power consumption is characterized by comprising a wireless charging transmitting end, a wireless charging receiving end and a controller, wherein the wireless charging receiving end comprises:
a receiving end coil L2 which interacts with a transmitting end coil L1 of the wireless charging transmitting end;
a battery:
the rectifier bridge is characterized in that two input ends of the rectifier bridge are respectively connected with a first end and a second end of a receiving end coil L2;
the source electrode of the MOS tube Q1 is connected with the positive output end of the rectifier bridge;
The MOS tube Q2 is connected with the positive output end of the rectifier bridge through a resistor R2 and connected to the first output end of the controller to receive the switching control signal, and the drain electrode of the MOS tube Q2 is connected with the gate electrode of the MOS tube Q1 and connected with the positive output end of the rectifier bridge through the resistor R1;
the source electrode of the MOS tube Q3 is connected with the anode of the battery, and the drain electrode of the MOS tube Q3 is used as the circuit output end of the switching circuit and is used for supplying power to the controller;
the MOS tube Q4 is connected with the grid electrode of the MOS tube Q3 through a resistor R3, the source electrode of the MOS tube Q4 is grounded, the grid electrode of the MOS tube Q4 is connected with the second output end of the controller and receives an opening and closing control signal, and the grid electrode of the MOS tube Q4 is further connected with the drain electrode of the MOS tube Q1;
The base electrode of the triode Q5 is connected with the source electrode of the MOS tube Q1 through a circuit R7, the base electrode of the triode Q is grounded through a resistor R8, the collector electrode of the triode Q is connected to the input end of the controller, a waveform signal is input for the controller, the controller outputs a low-level signal through a second output end after detecting the waveform signal, and the emitter electrode of the triode Q is grounded;
The positive electrode of the capacitor C1 is connected with the drain electrode of the MOS tube Q1, and the negative electrode of the capacitor C1 is grounded;
The input end of the controller is configured as a pull-up input, the first output end is configured as an open-drain output, and the second output end is configured as a push-pull output.
2. The zero standby power consumption contactless switching circuit of claim 1, wherein the rectifier bridge comprises:
The diode D1 comprises a diode D1, a diode D2, a diode D3 and a diode D4, wherein the anode of the diode D1 is connected with the anode of the diode D2, the cathode of the diode D1 is connected with the first end of the receiving end coil and the anode of the diode D3, the cathode of the diode D2 is connected with the second end of the receiving end coil L2 and the anode of the diode D4, the anode of the diode D1 and the anode of the diode D2 are further grounded, and the cathode of the diode D3 and the cathode of the diode D4 are further connected to the source electrode of the MOS transistor Q1.
3. The non-contact switching circuit with zero standby power consumption according to claim 1, further comprising a diode D5 disposed between the controller and the MOS transistor Q4, wherein an anode thereof is connected to the second output terminal of the controller, receives the on control signal, and a cathode thereof is connected to the gate of the MOS transistor Q4.
4. The non-contact switching circuit with zero standby power consumption according to claim 1, further comprising a diode D6 disposed between the drain of the MOS transistor Q1 and the MOS transistor Q4, wherein the anode is connected to the drain of the MOS transistor Q1 and the cathode is connected to the gate of the MOS transistor Q4.
5. The non-contact switching circuit with zero standby power consumption according to claim 1, further comprising a diode D7 having an anode connected to the drain of the MOS transistor Q1 and a cathode connected to the anode of the battery.
6. The non-contact switching circuit with zero standby power consumption according to claim 3, further comprising a capacitor C2 having its positive electrode connected to the anode of the diode D5 and its negative electrode grounded.
7. The non-contact switching circuit with zero standby power consumption according to claim 4, further comprising a capacitor C3 having its anode connected to the anode of the diode D6 and its cathode grounded.
8. The non-contact switching circuit with zero standby power consumption of claim 1, further comprising a capacitor C4, wherein the positive electrode of the capacitor C4 is connected with the drain electrode of the MOS transistor Q3, and the negative electrode of the capacitor C is grounded.
9. The contactless switching circuit of claim 1 or 7, wherein the drain of the MOS transistor Q3 is connected to the controller via a voltage stabilizing circuit.
10. An electronic device comprising the zero standby power consumption contactless switching circuit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310147701.7A CN116192104B (en) | 2023-02-21 | 2023-02-21 | Non-contact switching circuit with zero standby power consumption and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310147701.7A CN116192104B (en) | 2023-02-21 | 2023-02-21 | Non-contact switching circuit with zero standby power consumption and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116192104A CN116192104A (en) | 2023-05-30 |
| CN116192104B true CN116192104B (en) | 2025-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310147701.7A Active CN116192104B (en) | 2023-02-21 | 2023-02-21 | Non-contact switching circuit with zero standby power consumption and electronic equipment |
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| CN (1) | CN116192104B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2118818A1 (en) * | 1993-03-19 | 1994-09-20 | David S. Lin | Battery Pack Including Static Memory and a Timer for Charge Management |
| CN206075048U (en) * | 2016-07-21 | 2017-04-05 | 东莞正阳电子有限公司 | Switch control circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN215870887U (en) * | 2021-07-08 | 2022-02-18 | 凌矽电子科技(东莞)有限公司 | A batteryless infrared remote control system control device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2118818A1 (en) * | 1993-03-19 | 1994-09-20 | David S. Lin | Battery Pack Including Static Memory and a Timer for Charge Management |
| CN206075048U (en) * | 2016-07-21 | 2017-04-05 | 东莞正阳电子有限公司 | Switch control circuit |
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| CN116192104A (en) | 2023-05-30 |
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