CN212344120U - Switch power-taking circuit and wall switch - Google Patents
Switch power-taking circuit and wall switch Download PDFInfo
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- CN212344120U CN212344120U CN202020794747.XU CN202020794747U CN212344120U CN 212344120 U CN212344120 U CN 212344120U CN 202020794747 U CN202020794747 U CN 202020794747U CN 212344120 U CN212344120 U CN 212344120U
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Abstract
A switch power-taking circuit and a wall switch generate first alternating current according to the on-off state of a switch assembly and original alternating current output by an alternating current power supply through a voltage conversion circuit connected with the switch assembly in parallel; the rectifying circuit rectifies the first alternating current to generate a first direct current; the charging management circuit generates a second direct current according to the first direct current; the energy storage circuit stores electric energy according to the second direct current and generates energy storage direct current; the constant voltage circuit generates working direct current according to the energy storage direct current so as to supply power to the control board; when the electric equipment works normally, the energy storage circuit supplies power to the control panel; the switch assembly is turned off to use the electrical equipment to fall the time of stopping work, gets the electricity and saves from switch assembly both ends to can last effectual control panel power supply, need not change the structure of former circuit wiring, need not increase the interface that charges, easy to implement, and do not disturb the normal work of electrical equipment, improved the switch and got the practicality and the reliability of electric circuit.
Description
Technical Field
This application belongs to intelligent house technical field, especially relates to a circuit and wall switch are got to switch.
Background
At present, for the on-off control and the dimming control of some electric loads (such as LED lamps, motors, etc.), many application places are usually implemented by using switches. In future intelligent application of everything interconnection, a related control circuit needs to be additionally designed to achieve the purpose of intelligent control. These control circuits require a power supply to support the operation, and therefore a good and efficient power supply is required for these control circuits. One of the traditional methods is to adopt rewiring and introduce an external power supply to supply power to a control circuit, but the original circuit wiring and circuit structure can be changed, the construction difficulty is increased, and the intelligent process is hindered; the other method is simply to adopt a battery to supply power to the control circuit, but the method has the disadvantages that the service life of the battery is limited and the battery cannot be used for a long time, so that the replacement cost is increased, or a charging interface is designed, the battery is charged by using a power adapter to delay the service life of the battery, the external structure of a product can be changed by the method, the battery cannot be charged when no proper power adapter is available, and the battery cannot supply power to support normal work due to over-discharge of the battery when the battery is not charged in time.
Therefore, the conventional power supply technical scheme of the control circuit has the problems that the original structure of the circuit is changed, the implementation is not easy, and the power cannot be continuously and effectively supplied for a long time.
SUMMERY OF THE UTILITY MODEL
An object of this application is to provide a circuit and wall switch are got to switch, aim at solving and exist among the traditional control circuit power supply technical scheme and change the original structure of circuit, difficult implementation and can not last the problem of effectively supplying power for a long time.
The first aspect of the embodiment of the application provides a circuit is got to switch, is connected with consumer, alternating current power supply and control panel respectively, wherein the consumer pass through switch module with alternating current power supply connects, circuit is got to switch includes:
the voltage conversion circuit is connected with the switch assembly in parallel and is configured to generate first alternating current according to the on-off state of the switch assembly and original alternating current output by the alternating current power supply;
the rectifying circuit is connected with the voltage conversion circuit and is configured to rectify the first alternating current to generate a first direct current;
the charging management circuit is connected with the rectifying circuit and is configured to generate second direct current according to the first direct current;
the energy storage circuit is connected with the charging management circuit and is configured to store electric energy according to the second direct current and generate energy storage direct current;
and the constant voltage circuit is respectively connected with the charging management circuit, the energy storage circuit and the control panel and is configured to generate working direct current according to the energy storage direct current so as to supply power to the control panel.
In one embodiment, the switch power-taking circuit further includes:
the first filter circuit is connected with the rectifying circuit and the charging management circuit and is configured to filter and reduce noise of the first direct current;
the charging management circuit is specifically configured to generate the second direct current according to the first direct current after filtering and denoising processing.
In one embodiment, the switch power-taking circuit further includes:
and the second filter circuit is connected with the constant voltage circuit and the control panel and is configured to filter and reduce noise of the working direct current.
In one embodiment, the switch power-taking circuit further includes:
and the reverse connection protection circuit is connected with the constant voltage circuit and the control panel and is configured to perform reverse connection protection on the working direct current.
In one embodiment, the switch power-taking circuit further includes:
the voltage detection circuit is connected with the energy storage circuit and the charging management circuit and is configured to detect the voltage of the energy storage circuit so as to generate a voltage detection signal;
the charge management circuit is further configured to generate a switch control signal according to the voltage detection signal;
and the switching circuit is connected with the energy storage circuit and the charging management circuit and is configured to switch on or switch off the second direct current according to the switching control signal.
In one embodiment, the voltage conversion circuit includes: a transformer; the first end of the primary winding of the transformer is connected with the first end of the switch component, the second end of the primary winding of the transformer is connected with the second end of the switch component, the first end of the secondary winding of the transformer is connected with the first input end of the rectifying circuit, and the second end of the secondary winding of the transformer is connected with the second input end of the rectifying circuit.
In one embodiment, the charge management circuit includes: a voltage reduction and stabilization chip; the input end of the voltage reduction and stabilization chip is connected with the rectifying circuit, the output end of the voltage reduction and stabilization chip is connected with the energy storage circuit and the constant voltage circuit, and the grounding end of the voltage reduction and stabilization chip is connected with a power ground.
In one embodiment, the first filter circuit includes: a first capacitor; the first end of the first capacitor is connected with the rectifying circuit and the charging management circuit, and the second end of the first capacitor is connected with a power ground.
In one embodiment, the reverse connection protection circuit includes: a first diode; the anode of the first diode is connected with the constant voltage circuit, and the cathode of the first diode is connected with the control board.
A second aspect of embodiments of the present application provides a wall switch, including: switch module and as in any one above-mentioned switch get circuit.
The switch power-taking circuit and the wall switch provided by the embodiment of the utility model generate a first alternating current according to the on-off state of the switch component and the original alternating current output by the alternating current power supply through the voltage conversion circuit connected with the switch component in parallel; the rectifying circuit rectifies the first alternating current to generate a first direct current; the charging management circuit generates a second direct current according to the first direct current; the energy storage circuit stores electric energy according to the second direct current and generates energy storage direct current; the constant voltage circuit generates working direct current according to the energy storage direct current so as to supply power to the control board; when the switch assembly is used for communicating an alternating current power supply to electric equipment so as to enable the used equipment to work normally, the energy storage circuit supplies power to the control panel; when the switch assembly is connected between the alternating current power supply and the power load and stops working with the power utilization equipment, the power is taken and stored from two ends of the switch assembly, so that the energy storage circuit can continuously supply power to the control panel effectively to meet the working power utilization requirement of the control panel, the circuit structure of original circuit wiring is not required to be changed, a charging interface is not required to be added, the original external structure of a product is avoided to be changed, the energy storage circuit is easy to implement, the normal work of the power utilization equipment is not interfered, the energy storage circuit is suitable for multiple switch control type power utilization equipment application occasions, the practicability of the switch power taking circuit is improved, and the reliability of the switch power taking circuit for effectively supplying power to the control.
Drawings
Fig. 1 is a schematic structural diagram of a switch power-taking circuit according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a switch power-taking circuit according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a switch power-taking circuit according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a switch power-taking circuit according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a switch power-taking circuit according to an embodiment of the present disclosure;
fig. 6 is a schematic circuit diagram of a switch power-taking circuit according to an embodiment of the present application.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Fig. 1 shows a schematic structural diagram of a switch power-taking circuit according to a first embodiment of the present application, and for convenience of description, only the portions related to this embodiment are shown, and detailed descriptions are as follows:
the first aspect of the embodiment of the application provides a circuit is got to switch, is connected with consumer 03, alternating current power supply 01 and control panel 100 respectively, and wherein consumer 03 passes through switch module 02 and is connected with alternating current power supply 01, and the circuit is got to switch includes: a voltage conversion circuit 11, a rectifier circuit 12, a charge management circuit 13, a tank circuit 14, and a constant voltage circuit 15.
A voltage conversion circuit 11 connected in parallel to the switching element 02 and configured to generate a first alternating current according to an on/off state of the switching element 02 and an original alternating current output by the alternating current power supply 01; a rectifying circuit 12 connected to the voltage conversion circuit 11 and configured to rectify the first alternating current to generate a first direct current; a charging management circuit 13 connected to the rectifying circuit 12 and configured to generate a second direct current from the first direct current; the energy storage circuit 14 is connected with the charging management circuit 13, and is configured to store electric energy according to the second direct current and generate energy storage direct current; and the constant voltage circuit 15 is connected with the charging management circuit 13, the energy storage circuit 14 and the control board 100 and is configured to generate working direct current according to the stored direct current so as to supply power to the control board 100.
In a specific implementation, the switch component 02 may be a key switch, and can control on/off between the ac power supply 01 and the electric equipment 03. Optionally, the switch component 02 may also be a semiconductor switch device, such as a thyristor, a field effect transistor, a triode, etc.; or a contact switch such as a relay or an ac contactor. The electric equipment 03 may be electric equipment with different forms that can be controlled by a switch, such as a lamp, a motor, or a meter. Various control circuits are integrated in the control board 100, the operating voltage required by the control circuits is low-voltage direct current, for example, 1.8V, 3.3V, or 5V, and stable low-voltage direct current needs to be provided in order to meet the power consumption requirement of the control board 100. The ac power supply 01 outputs ac power, such as 220V ac power or 120V ac power. Optionally, the energy storage circuit 14 employs an energy storage battery, such as a storage battery or a lithium battery.
The switch electricity taking circuit is connected between the electric equipment 03 and the alternating current power supply 01 in series and is connected with the switch component 02 in parallel. Under the condition of connecting an alternating current mains supply, the switch component 02 is closed, namely the switch component 02 is in a connected state, the switch component 02 conducts the connection between the alternating current power supply 01 and the electric equipment 03, the electric equipment 03 obtains electricity and normally works, at the moment, the voltage conversion circuit 11 is short-circuited by the switch component 02, the original alternating current (namely the alternating current mains supply) cannot be obtained from the alternating current power supply 01 to generate a first alternating current, namely, the switch electricity obtaining circuit is short-circuited by the switch component 02 and cannot obtain electricity from two ends of the switch component 02, a second direct current is generated after relevant processing is carried out on the voltage conversion circuit 11, the rectification circuit 12 and the charging management circuit 13 to charge the energy storage circuit 14, the energy storage circuit 14 releases electric energy to generate energy storage direct current, and then the energy storage direct current is subjected to voltage conversion and constant voltage stabilizing processing by the constant voltage circuit 15, so as to stably supply power to the control board 100 and meet the power demand of the control board 100; when the switch module 02 is turned off, that is, the switch module 02 is in a turned-off state, the electric equipment 03 does not work when power is supplied, a voltage equal to an input alternating current commercial power (that is, an original alternating current) is arranged at two ends of the switch module 02, the voltage conversion circuit 11 obtains electric energy from two ends of the switch module 02, the original alternating current is transformed by the voltage conversion circuit 11 to generate a first alternating current, the rectifying circuit 12 rectifies the first alternating current to generate a first direct current, the voltage reduction and stabilization chip U1 performs voltage conversion on the first direct current to generate a second direct current, and the energy storage battery in the energy storage circuit 14 stores the electric energy according to the second direct current.
According to the embodiment of the application, when the power utilization equipment is powered on and normally works, the energy storage direct current is output by the energy storage circuit to supply power to the control panel; when the power failure stop work of the electric equipment, the switch assembly is used for taking and storing the electricity from the two ends of the switch assembly, so that the energy storage circuit can continuously supply electricity to the control panel effectively to meet the work electricity utilization requirement of the control panel, the circuit structure of original circuit wiring does not need to be changed, the charging interface does not need to be increased, the original external structure of a product is avoided to be changed, the scheme is easy to implement, the normal work of the electric equipment is not interfered, the switch assembly is suitable for multiple switch control type electric equipment application occasions, the practicability of the switch electricity taking circuit is improved, and the reliability of the switch electricity taking circuit for effectively supplying electricity to the control panel is.
Referring to fig. 2, in one embodiment, the switch power-taking circuit further includes: a first filter circuit 16.
A first filter circuit 16 connected to the rectifier circuit 12 and the charge management circuit 13, and configured to filter and denoise the first direct current; the charging management circuit 13 is specifically configured to generate a second direct current from the filtered and noise-reduced first direct current.
In specific implementation, noise interference in the first direct current generated by the rectifying circuit 12 can be effectively filtered by the first filter circuit 16, so that the smooth and stable first direct current is provided to the charging management circuit 13, and the stability and reliability of the switch power-taking circuit are improved.
Referring to fig. 3, in one embodiment, the switch power-taking circuit further includes: and a second filter circuit 17.
And the second filter circuit 17 is respectively connected with the constant voltage circuit 15 and the control board 100, and is configured to filter and reduce noise of the working direct current.
In specific implementation, the second filter circuit 17 is used for filtering and denoising the working direct current output by the constant voltage circuit 15 to filter noise interference in the working direct current, so that the accurate stability of the working direct current output to the control board 100 is further improved, stable and reliable power supply is performed on the control board 100, and the stable reliability of the switch power-taking circuit is further improved.
Referring to fig. 4, in one embodiment, the switch power-taking circuit further includes: the protection circuit 18 is connected in reverse.
The reverse connection protection circuit 18 is connected to the constant voltage circuit 15 and the control board 100, and configured to perform reverse connection protection of the operating direct current.
In specific implementation, the reverse connection protection circuit 18 can effectively prevent the voltage in the control board 100 from flowing backward to the constant voltage circuit 15, so that components in the constant voltage circuit 15 are damaged, and meanwhile, the reverse connection of working direct current can be prevented to damage the constant voltage circuit 15, the second filter circuit 17 and the like, so that the safety and reliability of the switch power taking circuit are improved.
Referring to fig. 5, in one embodiment, the switch power-taking circuit further includes: a voltage detection circuit 19 and a switching circuit 20.
A voltage detection circuit 19 connected to the tank circuit 14 and the charge management circuit 13, and configured to detect a voltage of the tank circuit 14 to generate a voltage detection signal; the charge management circuit 13 is further configured to generate a switch control signal according to the voltage detection signal; and the switching circuit 20 is connected with the energy storage circuit 14 and the charging management circuit 13 and is configured to switch on or off the second direct current according to the switching control signal.
In a specific implementation, in the process of charging the energy storage battery in the energy storage circuit 14, the voltage detection circuit 19 may monitor the voltage of the energy storage battery in the energy storage circuit 14 in real time to obtain the electric quantity information of the energy storage battery, and then the charging management circuit 13 controls the on/off of the switching circuit 20, for example, when the electric quantity of the energy storage battery is greater than or equal to a preset electric quantity threshold, the charging management circuit 13 generates a first level switching control signal to control the switching circuit 20 to turn off the second direct current generated by the charging management circuit 13, so as to stop charging the energy storage battery, and prevent the energy storage battery from being damaged by overcharging; on the contrary, when the electric quantity of the energy storage battery does not exceed the preset electric quantity threshold value, a switch control signal of a second level is generated to control the switch circuit 20 to communicate the second direct current to the energy storage battery so as to charge the energy storage battery, and the energy storage battery is prevented from being damaged by over-discharge. The switch control signal comprises a first level switch control signal and a second level switch control signal. The charging of the energy storage circuit 14 to store electric energy and the discharging to supply power to the control panel 100 can be effectively controlled safely and reliably, and the safety reliability and the practicability of the power-off circuit are improved.
Referring to fig. 6, in one embodiment, the voltage converting circuit 11 includes: a transformer T1; the first end of the primary winding of the transformer T1 is connected to the first end of the switch module 02, the second end of the primary winding of the transformer T1 is connected to the second end of the switch module 02, the first end of the secondary winding of the transformer T1 is connected to the first input end a of the rectifier circuit 12, and the second end of the secondary winding of the transformer T1 is connected to the second input end b of the rectifier circuit 12.
In specific implementation, the transformer T1 is an isolation transformer, and can effectively isolate impurities of the utility power and maintain components or devices in the post-stage circuit, and transform the original ac power output by the ac power supply 01 to generate the first ac power.
Referring to fig. 6, in one embodiment, the charge management circuit 13 includes: a voltage reduction and stabilization chip U1; the input end IN of the buck regulator chip U1 is connected to the rectifying circuit 12, the output end OUT of the buck regulator chip U1 is connected to the energy storage circuit 14 and the constant voltage circuit 15, and the ground end GND of the buck regulator chip U1 is connected to the power ground.
In a specific implementation, the buck regulator chip U1 may be an MP26123 series buck regulator chip, which is capable of performing buck and voltage regulation on the first direct current output by the rectifier circuit 12 to generate a second stable low-voltage direct current to charge the energy storage circuit 14.
Referring to fig. 6, in one embodiment, the first filter circuit 16 includes: a first capacitance C1; a first end of the first capacitor C1 is connected to the rectifying circuit 12 and the charge management circuit 13, and a second end of the first capacitor C1 is connected to the power ground.
In a specific implementation, referring to fig. 6, the second filtering circuit 17 includes a second capacitor C2, and the second capacitor C2 is used to filter and reduce noise of the working dc power to output a smooth and stable working dc power to power the control board 100. Optionally, the first filter circuit 16 may further adopt an RC filter circuit to perform filtering and noise reduction processing on the first direct current generated by the rectifier circuit 12 to output a smooth and stable first direct current to the charge management circuit 13.
Referring to fig. 6, in one embodiment, the reverse connection protection circuit 18 includes: a first diode D5; the anode of the first diode D5 is connected to the constant voltage circuit 15, and the cathode of the first diode D5 is connected to the control board.
In specific implementation, by utilizing the forward conduction and reverse cut-off characteristics of the first diode D5, the working direct current can be subjected to reverse connection protection and reverse flow prevention, so that the safety and reliability of the switch power-taking circuit are improved.
Referring to fig. 6, the rectifying circuit 12 is a rectifying bridge formed by a diode D1, a diode D2, a diode D3 and a diode D4, a cathode of the diode D1 and an anode of the diode D3 are commonly connected to a first end of the secondary winding of the transformer T1, a cathode of the diode D2 and an anode of the diode D4 are commonly connected to a second end of the secondary winding of the transformer T1, and the rectifying circuit 12 can rectify the first alternating current output by the transformer T1 to generate a first direct current. The switch assembly 02 employs a key switch SW 1.
The working principle of the switch power-taking circuit will be briefly explained with reference to fig. 6 as follows:
under the condition of accessing an alternating current commercial power, the key switch SW1 is closed, the connection between the alternating current power supply 01 and the electric load RL is conducted, the electric load RL (namely the electric device 03) is powered on to normally work, at the moment, the primary winding of the transformer T1 is short-circuited by the key switch SW1, the original alternating current (namely the alternating current commercial power) cannot be obtained to generate a first alternating current, namely, the switch power-taking circuit is short-circuited by the key switch SW1, the power cannot be taken from two ends of the key switch SW1, the transformer T1, the rectifying circuit 12 (comprising a diode D1, a diode D2, a diode D3 and a diode D4) and the voltage reduction and voltage stabilization chip U1 carry out related processing on the alternating current commercial power to generate a second direct current to charge the energy storage battery BAT, but release the electric power through the energy storage battery BAT to generate an energy storage direct current, and then carry out voltage conversion, so as to stably supply power to the control board 100 to meet the power consumption requirement of the control board 100; when the key switch SW1 is turned off and the power load RL is not operated when power is lost, a voltage equal to the voltage of the input alternating current commercial power (i.e. the original alternating current) is provided at two ends of the key switch SW1, the primary winding of the transformer T1 obtains electric energy from two ends of the key switch SW1, and transforms the original alternating current through the transformer T1 to generate a first alternating current, the rectifying circuit 12 rectifies the first alternating current to generate a first direct current, the voltage reduction and stabilization chip U1 performs voltage conversion processing on the first direct current to generate a second direct current to supply power to the energy storage battery BAT in the energy storage circuit 14, and the energy storage battery BAT stores the electric energy according to the second direct current.
A first aspect of embodiments of the present application provides a wall switch, including: switch module and any one the switch get circuit.
In one embodiment, the wall switch is an electrical switch capable of being mounted on a wall for use in turning on and off an electrical circuit to control a lighting device (e.g., a lighting fixture or a light module). The switch assembly may be a semiconductor switching device or a contact switch of a relay, an ac contactor, or the like.
The wall switch of the embodiment of the application can realize that when the electric equipment works normally when being electrified, the internal energy storage battery outputs the energy storage direct current to supply power to the control panel; when the power failure stop work of the electric equipment, get the electricity from the switch module both ends and store in the energy storage battery, thereby make the energy storage battery can last effectual power supply to the control panel in order to satisfy control panel work power consumption, in order to satisfy control needs such as adjust luminance to the electric equipment, the service life of battery is improved, the circuit structure of original circuit wiring need not be changed, and need not increase the interface that charges, avoid changing the original external structure of product, the scheme is easy to implement, and do not disturb the normal work of electric equipment, be applicable to among the multiple switch control type electric equipment application, the practicality and the reliability of wall switch have been improved.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the functional units, modules and circuits described above are illustrated as being divided into different functional units, modules and circuits, and in practical applications, the functions may be divided into different functional units, modules and circuits according to different requirements, that is, the internal structure of the device may be divided into different functional units, modules or circuits to complete all or part of the functions described above. In the embodiments, each functional unit, module, and circuit may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units, modules and circuits are only used for distinguishing one from another, and are not used for limiting the protection scope of the present application.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. The utility model provides a circuit is got to switch, is connected with consumer, AC power supply and control panel respectively, wherein the consumer pass through switch module with AC power supply connects, its characterized in that, circuit is got to switch includes:
the voltage conversion circuit is connected with the switch assembly in parallel and is configured to generate first alternating current according to the on-off state of the switch assembly and original alternating current output by the alternating current power supply;
the rectifying circuit is connected with the voltage conversion circuit and is configured to rectify the first alternating current to generate a first direct current;
the charging management circuit is connected with the rectifying circuit and is configured to generate second direct current according to the first direct current;
the energy storage circuit is connected with the charging management circuit and is configured to store electric energy according to the second direct current and generate energy storage direct current;
and the constant voltage circuit is connected with the charging management circuit, the energy storage circuit and the control board and is configured to generate working direct current according to the energy storage direct current so as to supply power to the control board.
2. The switch power-taking circuit according to claim 1, further comprising:
the first filter circuit is connected with the rectifying circuit and the charging management circuit and is configured to filter and reduce noise of the first direct current;
the charging management circuit is specifically configured to generate the second direct current according to the first direct current after filtering and denoising processing.
3. The switch power-taking circuit according to claim 1, further comprising:
and the second filter circuit is connected with the constant voltage circuit and the control panel and is configured to filter and reduce noise of the working direct current.
4. The switch power-taking circuit according to claim 1, further comprising:
and the reverse connection protection circuit is connected with the constant voltage circuit and the control panel and is configured to perform reverse connection protection on the working direct current.
5. The switch power-taking circuit according to claim 1, further comprising:
the voltage detection circuit is connected with the energy storage circuit and the charging management circuit and is configured to detect the voltage of the energy storage circuit so as to generate a voltage detection signal;
the charge management circuit is further configured to generate a switch control signal according to the voltage detection signal;
and the switching circuit is connected with the energy storage circuit and the charging management circuit and is configured to switch on or switch off the second direct current according to the switching control signal.
6. The switch power-taking circuit according to claim 1, wherein the voltage conversion circuit comprises: a transformer; the first end of the primary winding of the transformer is connected with the first end of the switch component, the second end of the primary winding of the transformer is connected with the second end of the switch component, the first end of the secondary winding of the transformer is connected with the first input end of the rectifying circuit, and the second end of the secondary winding of the transformer is connected with the second input end of the rectifying circuit.
7. The switch power-taking circuit according to claim 1, wherein the charge management circuit comprises: a voltage reduction and stabilization chip; the input end of the voltage reduction and stabilization chip is connected with the rectifying circuit, the output end of the voltage reduction and stabilization chip is connected with the energy storage circuit and the constant voltage circuit, and the grounding end of the voltage reduction and stabilization chip is connected with a power ground.
8. The switch power-taking circuit according to claim 2, wherein the first filter circuit comprises: a first capacitor; the first end of the first capacitor is connected with the rectifying circuit and the charging management circuit, and the second end of the first capacitor is connected with a power ground.
9. The switch power-taking circuit according to claim 4, wherein the reverse connection protection circuit comprises: a first diode; the anode of the first diode is connected with the constant voltage circuit, and the cathode of the first diode is connected with the control board.
10. A wall switch, characterized in that the wall switch comprises: a switch assembly and a switch taking circuit as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020794747.XU CN212344120U (en) | 2020-05-13 | 2020-05-13 | Switch power-taking circuit and wall switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020794747.XU CN212344120U (en) | 2020-05-13 | 2020-05-13 | Switch power-taking circuit and wall switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212344120U true CN212344120U (en) | 2021-01-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020794747.XU Active CN212344120U (en) | 2020-05-13 | 2020-05-13 | Switch power-taking circuit and wall switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212344120U (en) |
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2020
- 2020-05-13 CN CN202020794747.XU patent/CN212344120U/en active Active
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