CN220775452U - Power failure flushing control circuit and device - Google Patents
Power failure flushing control circuit and device Download PDFInfo
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- CN220775452U CN220775452U CN202321594993.0U CN202321594993U CN220775452U CN 220775452 U CN220775452 U CN 220775452U CN 202321594993 U CN202321594993 U CN 202321594993U CN 220775452 U CN220775452 U CN 220775452U
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- 238000011010 flushing procedure Methods 0.000 title claims abstract description 97
- 238000004146 energy storage Methods 0.000 claims abstract description 140
- 238000001514 detection method Methods 0.000 claims abstract description 29
- 239000003990 capacitor Substances 0.000 claims description 72
- 238000007599 discharging Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 8
- 238000003860 storage Methods 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000007601 warm air drying Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of intelligent toilets, in particular to a power failure flushing control circuit and a device, wherein the power failure flushing control circuit comprises: the device comprises a voltage detection module, a power supply switching module and an energy storage module; the voltage detection module is used for sending a power supply switching signal to the power supply switching module when detecting that the power supply voltage output by the power supply is lower than a preset threshold value; the power supply switching module is used for conducting a standby power supply loop between the energy storage module and the flushing load when receiving a power supply switching signal; the energy storage module is used for outputting working voltage required by the flushing load to the flushing load when the standby power supply loop is conducted, so that the technical problem that the intelligent closestool cannot drive the loads such as a water pump or an electromagnetic valve, a pulse valve and the like to flush when power is cut off is solved, and the use convenience of intelligent closestool users is improved.
Description
Technical Field
The utility model relates to the technical field of intelligent toilets, in particular to a power failure flushing control circuit and device.
Background
With the improvement of the living standard of people, intelligent toilets are becoming more popular, and the intelligent toilets originate in the united states and are used for medical treatment and old people health care, and are initially provided with a warm water cleaning function. After that, through korea, the bathroom companies in japan gradually introduced technology to start manufacturing, and added with various functions such as heating of the toilet cover, warm water washing, warm air drying, sterilization, etc. The intelligent toilets on the market are generally divided into three types, namely an intelligent toilet with cleaning, heating, sterilizing and the like, an intelligent toilet with automatic sleeve changing and cleaning functions.
At present, the intelligent closestool needs electric energy to drive loads such as a water pump or an electromagnetic valve, a pulse valve and the like to flush the excrement. However, when the power is cut, the intelligent closestool can not finish flushing due to the fact that the flushing pump or the valve is driven by no electric energy, and therefore inconvenience is brought to users of the intelligent closestool.
The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present utility model and is not intended to represent an admission that the foregoing is prior art.
Disclosure of Invention
The utility model mainly aims to provide a power-off flushing control circuit and device, and aims to solve the technical problem that the current intelligent closestool cannot finish flushing when in power failure, and brings inconvenience to users of the intelligent closestool.
In order to achieve the above object, the present utility model provides a power outage flush control circuit, comprising: the device comprises a voltage detection module, a power supply switching module and an energy storage module;
the power supply switching module is connected with a flushing load, the energy storage module and the power supply respectively, and the energy storage module is connected with the flushing load;
the voltage detection module is used for sending a power supply switching signal to the power supply switching module when detecting that the power supply voltage output by the power supply is lower than a preset threshold value;
the power supply switching module is used for conducting a standby power supply loop between the energy storage module and the flushing load when receiving the power supply switching signal;
and the energy storage module is used for outputting the working voltage required by the flushing load to the flushing load when the standby power supply loop is conducted.
Optionally, the power outage flushing control circuit further comprises: a boost module;
the boost module is respectively connected with the power supply switching module, the flushing load and the voltage detection module;
the boost module is used for boosting the output voltage of the energy storage module to the working voltage required by the flushing load and outputting the boosted voltage to the flushing load when the output voltage of the energy storage module is lower than the working voltage required by the flushing load.
Optionally, the power outage flushing control circuit further comprises: a voltage equalizing protection module;
the voltage equalizing protection module is respectively connected with the energy storage module and the power supply switching module;
the voltage equalizing protection module is used for outputting a discharge signal to the energy storage module when the output voltage of the energy storage module is higher than the preset safety voltage of the energy storage module;
the energy storage module is also used for discharging when the discharging signal is received, so that the output voltage is maintained within a preset safety voltage range.
Optionally, the energy storage module includes: at least one energy storage capacitor, voltage-sharing protection module includes: the energy storage capacitors are in one-to-one correspondence with the voltage equalizing protection units;
when the energy storage capacitor is one, the energy storage capacitor is connected with the corresponding voltage equalizing protection unit in parallel, the positive electrode of the energy storage capacitor is respectively connected with the power supply and the power supply switching module, and the negative electrode of the energy storage capacitor is grounded;
when the energy storage capacitors are multiple, the energy storage capacitors are connected in series, the energy storage capacitors are connected with the corresponding voltage equalizing protection units in parallel, the positive poles of the energy storage capacitors at the head ends are respectively connected with the power supply source and the power supply switching module, and the negative poles of the energy storage capacitors at the tail ends are grounded.
Optionally, the voltage equalizing protection units each include: the fourth resistor, the fifth resistor, the sixth resistor, the first voltage equalizing chip and the first MOS tube;
the input end of the first voltage equalizing chip is respectively connected with the first end of the fourth resistor, the first end of the fifth resistor and the first end of the sixth resistor and is connected to the positive electrode of the energy storage capacitor corresponding to the voltage equalizing protection unit, the output end of the first voltage equalizing chip is respectively connected with the second end of the fourth resistor and the grid electrode of the first MOS tube, the grounding end of the first voltage equalizing chip is connected with the source electrode of the first MOS tube and is connected to the negative electrode of the energy storage capacitor corresponding to the voltage equalizing protection unit, and the second end of the fifth resistor and the second end of the sixth resistor are connected and are connected to the drain electrode of the first MOS tube.
Optionally, the power outage flushing control circuit further comprises: a current limiting charging module;
the current-limiting charging module is respectively connected with the power supply, the power supply switching module and the energy storage module;
the current-limiting charging module is used for limiting the current output by the power supply when the power supply voltage output by the power supply meets the working voltage required by the flushing load, and transmitting the current after the current limiting to the energy storage module to charge the energy storage module.
Optionally, the current limiting charging module includes: the first resistor, the second resistor, the third resistor and the first diode;
the power supply is connected to one end of the first resistor, the second resistor and the third resistor which are connected in parallel, the other end of the first resistor, the second resistor and the third resistor which are connected in parallel are connected with the positive electrode of the first diode, and the negative electrode of the first diode is respectively connected with the power supply switching module and the energy storage module.
Optionally, the power supply switching module is: a self-locking circuit; the power failure flushing control circuit is also provided with: an external key;
wherein the external key is connected with the self-locking circuit;
and the external key is used for controlling the standby power supply loop between the energy storage module and the flushing load to be conducted or closed.
Optionally, the self-locking circuit includes: the transistor comprises a seventh resistor, a first triode, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a first capacitor, a second MOS tube and a second diode;
the first end of the seventh resistor is connected with the voltage detection module, the second end of the seventh resistor is connected with the base electrode of the first triode, the emitter electrode of the first triode is grounded, the collector electrode of the first triode is connected with the first end of the eighth resistor and the external key, the second end of the eighth resistor is connected with the first end of the first capacitor, the first end of the ninth resistor and the grid electrode of the second MOS tube respectively, the second end of the first capacitor is connected with the second end of the ninth resistor and the source electrode of the second MOS tube respectively and is connected with the energy storage module, the drain electrode of the second MOS tube is connected with the first end of the tenth resistor and the positive electrode of the second diode respectively, the second end of the tenth resistor is connected with the first end of the eleventh resistor and the first end of the second capacitor respectively and is connected with the voltage boosting module, the negative electrode of the second diode is connected with the second end of the eleventh resistor and the second capacitor is connected with the ground.
In addition, in order to achieve the above object, the present utility model also provides a power outage flush control device, which includes the power outage flush control circuit as described above.
The utility model provides a power failure flushing control circuit and a device, wherein the power failure flushing control circuit comprises: the device comprises a voltage detection module, a power supply switching module and an energy storage module; the power supply switching module is connected with a flushing load, the energy storage module and the power supply respectively, and the energy storage module is connected with the flushing load; the voltage detection module is used for sending a power supply switching signal to the power supply switching module when detecting that the power supply voltage output by the power supply is lower than a preset threshold value; the power supply switching module is used for conducting a standby power supply loop between the energy storage module and the flushing load when receiving the power supply switching signal; the energy storage module is used for outputting working voltage required by the flushing load to the flushing load when the standby power supply loop is conducted, so that the technical problem that the intelligent closestool cannot drive loads such as a water pump or an electromagnetic valve, a pulse valve and the like to flush when power is cut off is solved, and the use convenience of intelligent closestool users is improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a first embodiment of a power outage flush control circuit according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a second embodiment of a power outage flush control circuit according to an embodiment of the present utility model;
fig. 3 is a schematic circuit diagram of a voltage equalizing protection module, an energy storage module and a current limiting charging module in a second embodiment of a power failure flushing control circuit according to an embodiment of the present utility model;
fig. 4 is a schematic circuit diagram of a self-locking circuit in a second embodiment of a power failure flushing control circuit according to an embodiment of the present utility model.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the technical solutions should be considered that the combination does not exist and is not within the scope of protection claimed by the present utility model.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a first embodiment of a power outage flush control circuit according to an embodiment of the present utility model;
based on fig. 1, a first embodiment of the power outage flush control circuit of the present utility model is presented.
In this embodiment, the power outage flushing control circuit includes: the power supply switching device comprises a voltage detection module 1, a power supply switching module 2 and an energy storage module 3;
the voltage detection module 1 is respectively connected with the power supply and the power supply switching module 2, the power supply switching module 2 is respectively connected with a flushing load, the energy storage module 3 and the power supply, and the energy storage module 3 is connected with the flushing load;
the voltage detection module 1 is configured to send a power supply switching signal to the power supply switching module 2 when detecting that the power supply voltage output by the power supply is lower than a preset threshold;
the power supply switching module 2 is used for conducting a standby power supply loop between the energy storage module 3 and the flushing load when the power supply switching signal is received;
the energy storage module 3 is configured to output an operating voltage required by the flushing load to the flushing load when the standby power supply loop is turned on.
It should be noted that, the voltage detection module 1 includes a voltage detection chip, and the voltage detection chip may be of a TM52F1376 type or other types, which is not limited in this embodiment.
It can be understood that the preset threshold may be a minimum operating voltage value for driving the flushing load to flush, and the power supply switching signal may be a signal for switching off the power supply and the flushing load loop, for example, when a power failure occurs, the voltage detection module 1 does not send an electrical signal for driving the power supply and the flushing load loop to conduct, which is equivalent to sending a power failure signal to the power supply switching module 2.
It should be understood that the power supply may be a DC power source for converting 220V mains ac to the circuit, for example 24V or 12V, through a power panel, and the DC power may be changed to the required voltage value through a DC-DC circuit, for example, to charge the energy storage module 3.
The flushing load may be a load that performs a flushing operation by electric power, such as a water pump, an electromagnetic valve, a pulse valve, or the like.
In this embodiment, the power outage flush control circuit includes: the power supply switching device comprises a voltage detection module 1, a power supply switching module 2 and an energy storage module 3; the voltage detection module 1 is respectively connected with the power supply and the power supply switching module 2, the power supply switching module 2 is respectively connected with a flushing load, the energy storage module 3 and the power supply, and the energy storage module 3 is connected with the flushing load; the voltage detection module 1 is configured to send a power supply switching signal to the power supply switching module 2 when detecting that the power supply voltage output by the power supply is lower than a preset threshold; the power supply switching module 2 is used for conducting a standby power supply loop between the energy storage module 3 and the flushing load when the power supply switching signal is received; the energy storage module 3 is configured to output a working voltage required by the flushing load to the flushing load when the standby power supply loop is turned on, so that a technical problem that the intelligent toilet cannot drive loads such as a water pump, an electromagnetic valve, a pulse valve and the like to flush when power fails is solved, and convenience of use of users of the intelligent toilet is improved.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a second embodiment of a power outage flushing control circuit according to an embodiment of the present utility model.
Considering the problem that when the output voltage of the energy storage module 3 is lower than the operating voltage required by the flushing load, the flushing load cannot complete the flushing action, so that the energy storage module 3 cannot fully utilize the stored electric quantity, as shown in fig. 2, in this embodiment, the power failure flushing control circuit further includes: a boosting module 4;
the boosting module 4 is respectively connected with the power supply switching module 2, the flushing load and the voltage detection module 1;
the boost module 4 is configured to boost the output voltage of the energy storage module 3 to the operating voltage required by the flushing load and output the boosted voltage to the flushing load when the output voltage of the energy storage module 3 is lower than the operating voltage required by the flushing load.
The voltage detection module 1 may detect the output voltage of the energy storage module 3, and when the output voltage of the energy storage module 3 is lower than the operation voltage required by the flushing load but higher than the minimum value of the output voltage, send an enable signal to the boost module 4 to drive the boost module 4 to boost the output voltage of the energy storage module 3 to the operation voltage required by the flushing load and output the boosted voltage to the flushing load, and when the output voltage of the energy storage module 3 is lower than the minimum value of the output voltage, stop sending the enable signal to the boost module 4, thereby avoiding the shortage of the flushing load energy and long running water due to the failure of the valve. The minimum value of the output voltage is a voltage value at which the output voltage of the energy storage module 3 just maintains the flush load to finish a flush operation.
It will be appreciated that the BOOST module 4 includes a DC-DC circuit to BOOST the low voltage direct current to a voltage that drives the flush load via BOOST principles.
Further, in order to prevent the output voltage of the energy storage module 3 from being higher than the safety voltage of the energy storage module 3, the power outage flushing control circuit further includes: a voltage equalizing protection module 5;
wherein, the voltage equalizing protection module 5 is respectively connected with the energy storage module 3 and the power supply switching module 2;
the voltage equalizing protection module is used for outputting a discharge signal to the energy storage module when the output voltage of the energy storage module is higher than the preset safety voltage of the energy storage module;
the energy storage module is also used for discharging when the discharging signal is received, so that the output voltage is maintained within a preset safety voltage range.
The discharging signal is a signal for discharging the energy storage module 3, and the preset safety voltage is a voltage when the energy storage module 3 operates normally.
Further, the energy storage module 3 includes: at least one energy storage capacitor 31, the voltage equalizing protection module 5 includes: at least one voltage equalizing protection unit 51, wherein the energy storage capacitors 31 are in one-to-one correspondence with the voltage equalizing protection units 51;
when the energy storage capacitor 31 is one, the energy storage capacitor 31 is connected in parallel with the corresponding voltage equalizing protection unit 51, the positive electrode of the energy storage capacitor 31 is respectively connected with the power supply and the power supply switching module 2, and the negative electrode of the energy storage capacitor 31 is grounded;
when the number of the energy storage capacitors 31 is plural, each energy storage capacitor 31 is connected in series, each energy storage capacitor 31 is connected in parallel with the corresponding voltage equalizing protection unit 51, the positive electrode of the energy storage capacitor 31 at the head end is respectively connected with the power supply and the power supply switching module 2, and the negative electrode of the energy storage capacitor 31 at the tail end is grounded.
It should be noted that the number of the storage capacitors 31 may be selected according to actual needs, and accordingly, how many storage capacitors 31 correspond to how many voltage equalizing protection units 51. When the energy storage capacitors 31 are one, the voltage equalizing protection unit 51 can be used for maintaining the voltages at two ends of the energy storage capacitors 31 at a normal working voltage, when the energy storage capacitors 31 are multiple, the voltage equalizing protection unit 51 can be used for maintaining the voltages at two ends of the energy storage capacitors 31 at a normal working voltage, so that the damage caused by overhigh charging voltage of one energy storage capacitor 31 due to different charging speeds and internal resistances of the energy storage capacitors 31 when the energy storage capacitors 31 are charged is avoided.
Further, in order to charge the energy storage module 3 when the power supply voltage outputted from the power supply meets the operation voltage required by the flushing load, the power failure flushing control circuit further includes: a current limiting charging module 6;
the current-limiting charging module 6 is respectively connected with the power supply, the power supply switching module 2 and the energy storage module 3;
the current-limiting charging module 6 is configured to limit the current output by the power supply when the power supply voltage output by the power supply meets the working voltage required by the flushing load, and send the current after the current limiting to the energy storage module 3 to charge the energy storage module 3.
It should be noted that, in order to prevent the power supply from directly supplying the energy storage module 3 with excessive current, the energy storage module 3 is easy to be damaged, and the current-limiting charging module 6 performs current limiting on the current output by the power supply and then transmits the current after current limiting to the energy storage module 3 to charge the energy storage module 3.
Further, in order to facilitate the user to control the flushing load to work through the external switch when the power is off, the power supply switching module 2 is: a self-locking circuit 21; the power failure flushing control circuit is also provided with: an external key S1;
wherein the external key S1 is connected with the self-locking circuit 21;
the external key S1 is configured to control a standby power supply loop between the energy storage module 3 and the flush load to be turned on or off.
When the external key S1 is pressed, the standby power supply circuit between the energy storage module 3 and the flush load is turned on, and the energy storage module 3 outputs an operating voltage required by the flush load to the flush load.
Referring to fig. 3, fig. 3 is a schematic circuit diagram of a voltage equalizing protection module 5, an energy storage module 3 and a current limiting charging module 6 in a second embodiment of a power failure flushing control circuit according to an embodiment of the present utility model;
as shown in fig. 3, the current limiting charging module 6 includes: a first resistor R1, a second resistor R2, a third resistor R3 and a first diode D1;
one end of the first resistor R1, the second resistor R2 and the third resistor R3, which are connected in parallel, are connected with the power supply, the other end of the first resistor R1, the second resistor R2 and the third resistor R3, which are connected in parallel, are connected with the anode of the first diode D1, and the cathode of the first diode D1 is respectively connected with the power supply switching module 2 and the energy storage module 3.
The voltage equalizing protection units 51 each include: the fourth resistor R4, the fifth resistor R5, the sixth resistor R6, the first voltage equalizing chip U1 and the first MOS tube Q1;
the input end of the first voltage equalizing chip U1 is connected to the first end of the fourth resistor R4, the first end of the fifth resistor R5, and the first end of the sixth resistor R6, respectively, and is connected to the positive electrode of the storage capacitor 31 corresponding to the voltage equalizing protection unit 51, the output end of the first voltage equalizing chip U1 is connected to the second end of the fourth resistor R4, and the gate of the first MOS transistor Q1, respectively, the ground end of the first voltage equalizing chip U1 is connected to the source of the first MOS transistor Q1, and is connected to the negative electrode of the storage capacitor 31 corresponding to the voltage equalizing protection unit 51, and the second end of the fifth resistor R5 and the second end of the sixth resistor R6 are connected to the drain of the first MOS transistor Q1.
It should be noted that, the energy storage capacitor 31 includes a first supercapacitor SC1 and a second supercapacitor SC2, and the first supercapacitor SC1 and the second supercapacitor SC2 are used for storing electric energy. The first resistor R1, the second resistor R2 and the third resistor R3 can limit the current output by the power supply, so as to prevent the first supercapacitor SC1 and the second supercapacitor SC2 from being damaged due to overlarge current output by the power supply. The first diode D1 is used to ensure unidirectional charging current.
It should be understood that the fourth resistor R4, the fifth resistor R5, and the sixth resistor R6 are current limiting resistors, the input end of the first voltage equalizing chip U1 and the ground end of the first voltage equalizing chip U1 may detect voltages at two ends of the first supercapacitor SC1 and the second supercapacitor SC2, and when the voltages at two ends of the first supercapacitor SC1 and the second supercapacitor SC2 are higher than the voltages in normal operation, the output end of the first voltage equalizing chip U1 sends a high level signal to the gate of the first MOS transistor Q1, and the first MOS transistor Q1 is turned on to discharge the redundant voltages.
Referring to fig. 4, fig. 4 is a schematic circuit diagram of a self-locking circuit 21 in a second embodiment of a power outage flush control circuit according to an embodiment of the present utility model;
as shown in fig. 4, the self-locking circuit 21 includes: a seventh resistor R7, a first triode T1, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a first capacitor C1, a second capacitor C2, a second MOS transistor Q2 and a second diode D2;
the first end of the seventh resistor R7 is connected to the voltage detection module 1, the second end of the seventh resistor R7 is connected to the base of the first triode T1, the emitter of the first triode T1 is grounded, the collector of the first triode T1 is connected to the first end of the eighth resistor R8 and the external key S1, the second end of the eighth resistor R8 is connected to the first end of the first capacitor C1, the first end of the ninth resistor R9 and the gate of the second MOS transistor Q2, the second end of the first capacitor C1 is connected to the second end of the ninth resistor R9, the source of the second MOS transistor Q2 is connected to the energy storage module 3, the drain of the second MOS transistor Q2 is connected to the first end of the tenth resistor R10 and the positive electrode of the second diode D2, the second end of the tenth resistor R10 is connected to the first end of the eleventh resistor R11 and the gate of the second MOS transistor Q2, the second end of the second capacitor C2 is connected to the negative electrode of the eleventh resistor R11 and the second end of the second capacitor C2 is connected to the voltage boost module 2.
When the external power is turned off, the first end of the seventh resistor R7 is connected to the voltage detection module 1, and the voltage signal is not received by the base of the first triode T1, and the emitter of the first triode T1 is grounded, so that the first triode T1 is turned off, the current flowing through the ninth resistor R9 is zero, the voltage drop of the ninth resistor R9 is zero, the second MOS transistor Q2 is turned off, and the circuit between the energy storage capacitor 31 and the flushing load is disconnected. When the external power failure needs to flush, the switch of the external key S1 is closed, the energy storage capacitor 31 is conducted to the ground, a certain voltage drop is generated when a current flows through the ninth resistor R9, the second diode D2 is conducted, a loop between the energy storage capacitor 31 and the flushing load is conducted, and the energy storage capacitor 31 outputs the working voltage needed by the flushing load to drive the flushing load to complete the flushing action.
It should be understood that the second end of the tenth resistor R10 is connected to the first end of the eleventh resistor R11 and the first end of the second capacitor C2 and is connected to the voltage detection module 1, where the voltage detection module 1 is capable of detecting the output voltage of the storage capacitor 31, and when the output voltage of the storage capacitor 31 is lower than the operating voltage required by the flushing load, sending an enable signal to the boost module 4 drives the boost module 4 to boost the output voltage of the storage module 3 to the operating voltage required by the flushing load and output the boosted voltage to the flushing load.
In order to achieve the above object, the present utility model further provides a power outage flushing control device, which includes the power outage flushing control circuit as described above. The specific structure of the power-off flushing control circuit refers to the above embodiments, and because the power-off flushing control device adopts all the technical schemes of all the embodiments, the power-off flushing control circuit at least has all the beneficial effects brought by the technical schemes of the embodiments, and the detailed description is omitted herein.
The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the utility model, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (10)
1. A power outage flush control circuit, said power outage flush control circuit comprising: the device comprises a voltage detection module, a power supply switching module and an energy storage module;
the voltage detection module is respectively connected with a power supply and the power supply switching module, the power supply switching module is respectively connected with a flushing load, the energy storage module and the power supply, and the energy storage module is connected with the flushing load;
the voltage detection module is used for sending a power supply switching signal to the power supply switching module when detecting that the power supply voltage output by the power supply is lower than a preset threshold value;
the power supply switching module is used for conducting a standby power supply loop between the energy storage module and the flushing load when receiving the power supply switching signal;
and the energy storage module is used for outputting the working voltage required by the flushing load to the flushing load when the standby power supply loop is conducted.
2. The power outage flush control circuit of claim 1, wherein said power outage flush control circuit further comprises: a boost module;
the boost module is respectively connected with the power supply switching module, the flushing load and the voltage detection module;
the boost module is used for boosting the output voltage of the energy storage module to the working voltage required by the flushing load and outputting the boosted voltage to the flushing load when the output voltage of the energy storage module is lower than the working voltage required by the flushing load.
3. The power outage flush control circuit of claim 1, wherein said power outage flush control circuit further comprises: a voltage equalizing protection module;
the voltage equalizing protection module is respectively connected with the energy storage module and the power supply switching module;
the voltage equalizing protection module is used for outputting a discharge signal to the energy storage module when the output voltage of the energy storage module is higher than the preset safety voltage of the energy storage module;
the energy storage module is also used for discharging when the discharging signal is received, so that the output voltage is maintained within a preset safety voltage range.
4. A power outage flush control circuit according to claim 3, wherein said energy storage module comprises: at least one energy storage capacitor, voltage-sharing protection module includes: the energy storage capacitors are in one-to-one correspondence with the voltage equalizing protection units;
when the energy storage capacitor is one, the energy storage capacitor is connected with the corresponding voltage equalizing protection unit in parallel, the positive electrode of the energy storage capacitor is respectively connected with the power supply and the power supply switching module, and the negative electrode of the energy storage capacitor is grounded;
when the energy storage capacitors are multiple, the energy storage capacitors are connected in series, the energy storage capacitors are connected with the corresponding voltage equalizing protection units in parallel, the positive poles of the energy storage capacitors at the head ends are respectively connected with the power supply source and the power supply switching module, and the negative poles of the energy storage capacitors at the tail ends are grounded.
5. The power outage flush control circuit according to claim 4, wherein each of said voltage equalizing protection units comprises: the fourth resistor, the fifth resistor, the sixth resistor, the first voltage equalizing chip and the first MOS tube;
the input end of the first voltage equalizing chip is respectively connected with the first end of the fourth resistor, the first end of the fifth resistor and the first end of the sixth resistor and is connected to the positive electrode of the energy storage capacitor corresponding to the voltage equalizing protection unit, the output end of the first voltage equalizing chip is respectively connected with the second end of the fourth resistor and the grid electrode of the first MOS tube, the grounding end of the first voltage equalizing chip is connected with the source electrode of the first MOS tube and is connected to the negative electrode of the energy storage capacitor corresponding to the voltage equalizing protection unit, and the second end of the fifth resistor and the second end of the sixth resistor are connected and are connected to the drain electrode of the first MOS tube.
6. The power outage flush control circuit of claim 1, wherein said power outage flush control circuit further comprises: a current limiting charging module;
the current-limiting charging module is respectively connected with the power supply, the power supply switching module and the energy storage module;
the current-limiting charging module is used for limiting the current output by the power supply when the power supply voltage output by the power supply meets the working voltage required by the flushing load, and transmitting the current after the current limiting to the energy storage module to charge the energy storage module.
7. The power outage flush control circuit of claim 6, wherein said current limiting charging module comprises: the first resistor, the second resistor, the third resistor and the first diode;
the power supply is connected to one end of the first resistor, the second resistor and the third resistor which are connected in parallel, the other end of the first resistor, the second resistor and the third resistor which are connected in parallel are connected with the positive electrode of the first diode, and the negative electrode of the first diode is respectively connected with the power supply switching module and the energy storage module.
8. The power outage flush control circuit of claim 1, wherein said power supply switching module is: a self-locking circuit; the power failure flushing control circuit is also provided with: an external key;
wherein the external key is connected with the self-locking circuit;
and the external key is used for controlling the standby power supply loop between the energy storage module and the flushing load to be conducted or closed.
9. The power outage flush control circuit of claim 8, wherein said self-locking circuit comprises: the transistor comprises a seventh resistor, a first triode, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a first capacitor, a second MOS tube and a second diode;
the first end of the seventh resistor is connected with the voltage detection module, the second end of the seventh resistor is connected with the base electrode of the first triode, the emitter electrode of the first triode is grounded, the collector electrode of the first triode is connected with the first end of the eighth resistor and the external key, the second end of the eighth resistor is connected with the first end of the first capacitor, the first end of the ninth resistor and the grid electrode of the second MOS tube respectively, the second end of the first capacitor is connected with the second end of the ninth resistor and the source electrode of the second MOS tube respectively and is connected with the energy storage module, the drain electrode of the second MOS tube is connected with the first end of the tenth resistor and the positive electrode of the second diode respectively, the second end of the tenth resistor is connected with the first end of the eleventh resistor and the first end of the second capacitor respectively and is connected with the voltage boosting module, the negative electrode of the second diode is connected with the second end of the eleventh resistor and the second capacitor is connected with the ground.
10. A power outage flush control device comprising the power outage flush control circuit of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321594993.0U CN220775452U (en) | 2023-06-20 | 2023-06-20 | Power failure flushing control circuit and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321594993.0U CN220775452U (en) | 2023-06-20 | 2023-06-20 | Power failure flushing control circuit and device |
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| Publication Number | Publication Date |
|---|---|
| CN220775452U true CN220775452U (en) | 2024-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321594993.0U Active CN220775452U (en) | 2023-06-20 | 2023-06-20 | Power failure flushing control circuit and device |
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| Country | Link |
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| CN (1) | CN220775452U (en) |
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2023
- 2023-06-20 CN CN202321594993.0U patent/CN220775452U/en active Active
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