CN108736706B - Controllable switch power supply and purifying water tank comprising same - Google Patents
Controllable switch power supply and purifying water tank comprising same Download PDFInfo
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- CN108736706B CN108736706B CN201810867588.9A CN201810867588A CN108736706B CN 108736706 B CN108736706 B CN 108736706B CN 201810867588 A CN201810867588 A CN 201810867588A CN 108736706 B CN108736706 B CN 108736706B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 238000002955 isolation Methods 0.000 claims abstract description 87
- 238000001514 detection method Methods 0.000 claims abstract description 24
- 230000001105 regulatory effect Effects 0.000 claims abstract description 11
- 239000008213 purified water Substances 0.000 claims abstract description 5
- 230000003287 optical effect Effects 0.000 claims description 8
- RECVMTHOQWMYFX-UHFFFAOYSA-N oxygen(1+) dihydride Chemical compound [OH2+] RECVMTHOQWMYFX-UHFFFAOYSA-N 0.000 claims description 7
- 230000005669 field effect Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 240000009088 Fragaria x ananassa Species 0.000 description 1
- 235000007270 Gaultheria hispida Nutrition 0.000 description 1
- 235000009134 Myrica cerifera Nutrition 0.000 description 1
- 244000024215 Myrica gale Species 0.000 description 1
- 235000012851 Myrica pensylvanica Nutrition 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 235000005911 diet Nutrition 0.000 description 1
- 230000037213 diet Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 235000012055 fruits and vegetables Nutrition 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000957 no side effect Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 235000021012 strawberries Nutrition 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Classifications
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention provides a controllable switching power supply and a purified water tank containing the same, and belongs to the technical field of power supply. The controllable switch power supply and the purifying water tank comprising the same provided by the embodiment of the invention are characterized in that the controllable switch power supply is provided with a current detection module and an isolation feedback module, the current detection module can detect the output current of the first switch power supply module, the main control module provides polarized voltage to the isolation feedback module according to the output current of the first switch power supply module, and the output of the first switch power supply module is regulated through the isolation feedback module, so that the output of the switch power supply can be regulated, and further the power regulation of the purifying water tank is realized.
Description
Technical Field
The invention relates to the technical field of power supplies, in particular to a controllable switching power supply and a purifying water tank comprising the same.
Background
Along with the improvement of living standard, people pay more attention to diet hygiene. In particular to sterilization and disinfection of fruits, vegetables, meat and the like. At present, the water tank with the sterilization and disinfection functions is increasingly popular, and the main reason is that the water tank is a necessary household product, has the purification function, does not occupy the original kitchen area, and is quite attractive under the dual advantages of integration and functionalization.
The existing water tank is usually sterilized by adopting a water ion generator, after the water ion generator is electrified with direct current, a voltage difference is formed between the positive electrode plate and the negative electrode plate, and the water is electrically conducted and ionized, so that the effect of sterilizing fruits and vegetables in the water is achieved, other reagents are not needed to be added in the whole process, no side effect is caused, and the water tank is welcomed by users.
However, the current water ionizer usually adopts a fixed voltage stabilizing source, and the effect difference is larger due to different adaptation degrees of the fixed voltage stabilizing source to water quality in various places. Especially, when a user washes fruits such as strawberries or waxberries, if salt is added, the conductivity is increased, and under the condition that the power of the water ionizer is fixed, the water ionizer can be prevented from directly working.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a controllable switching power supply and a purifying water tank comprising the same, and the output of the switching power supply can be adjusted so as to realize the adjustable power of the purifying water tank.
In a first aspect, an embodiment of the present invention provides a controllable switching power supply, including a first switching power supply module, a current detection module, an isolation feedback module, a main control module, and an external power supply interface;
The first switching power supply module is connected with an external power supply through the external power supply interface and outputs voltage to the water ion generator; the current detection module is connected between the first switching power supply module and the input end of the main control module; the isolation feedback module is connected between the first switching power supply module and the output end of the main control module;
The current detection module is used for detecting the output current of the first switching power supply module and inputting the output current to the main control module; the main control module is used for providing polarized voltage to the isolation feedback module according to the output current of the first switching power supply module, and the output of the first switching power supply module is regulated through the isolation feedback module.
With reference to the first aspect, the embodiment of the present invention provides a first possible implementation manner of the first aspect, where the isolation feedback module includes a voltage division isolation unit and a feedback unit; the voltage division isolation unit is connected with the main control module and the first switching power supply module, and the feedback unit is connected with the voltage division isolation unit and the first switching power supply module.
With reference to the first aspect, the embodiment of the present invention provides a second possible implementation manner of the first aspect, where the voltage division isolation unit includes a first resistor, a second resistor, and an optocoupler isolation circuit; the first resistor and the second resistor are connected in series to form a voltage division branch, one end of the voltage division branch is connected with the first switching power supply module, and the other end of the voltage division branch is grounded; the optocoupler isolation circuit is connected with the voltage division branch circuit.
With reference to the second possible implementation manner of the first aspect, the embodiment of the present invention provides a third possible implementation manner of the first aspect, where the optocoupler isolation circuit includes a first optocoupler isolation module, and the first optocoupler isolation module is connected in parallel with the first resistor or the second resistor.
With reference to the second possible implementation manner of the first aspect, the embodiment of the present invention provides a fourth possible implementation manner of the first aspect, where the optocoupler isolation circuit includes a first optocoupler isolation module and a second optocoupler isolation module, and the first optocoupler isolation module is connected in parallel with the first resistor; the second optocoupler isolation module is connected with the second resistor in parallel.
With reference to the third or fourth possible implementation manner of the first aspect, the embodiment of the present invention provides a fifth possible implementation manner of the first aspect, where the first optocoupler isolation module or the second optocoupler isolation module includes an optocoupler element and a third resistor, and a control end of the optocoupler element is connected with the main control module.
With reference to the second possible implementation manner of the first aspect, an embodiment of the present invention provides a sixth possible implementation manner of the first aspect, where the optocoupler isolation circuit includes a first controllable switch module and a second controllable switch module, and the first controllable switch module is connected in parallel with the first resistor; the second controllable switch module is connected with the second resistor in parallel.
With reference to the sixth possible implementation manner of the first aspect, an embodiment of the present invention provides a seventh possible implementation manner of the first aspect, where the first controllable switch module or the second controllable switch module includes a controllable switch and a fourth resistor; and the control end of the controllable switch is connected with the main control module.
With reference to the seventh possible implementation manner of the first aspect, the embodiment of the present invention provides an eighth possible implementation manner of the first aspect, wherein the controllable switch is a solid state relay; or the controllable switch comprises a field effect transistor and an optical coupler; or the controllable switch comprises a triode and an optical coupler.
With reference to the first aspect, an embodiment of the present invention provides a ninth possible implementation manner of the first aspect, where the controllable switching power supply further includes a second switching power supply module and a buck module; the second switching power supply module is connected with an external power supply through the external power supply interface; the step-down module is connected between the second switching power supply module and the main control module.
In a second aspect, an embodiment of the present invention further provides a purified water tank, including the controllable switching power supply according to any one of the first aspect, and further including a water ionizer connected to the controllable switching power supply.
The embodiment of the invention has the following beneficial effects:
The controllable switch power supply and the purifying water tank comprising the same are provided with the current detection module and the isolation feedback module, wherein the current detection module can detect the output current of the first switch power supply module to the water ionizer, when the conductivity of water changes due to the change of water quality in the water ionizer, the output current of the first switch power supply module changes and is detected by the current detection module, the main control module provides polarized voltage to the isolation feedback module according to the output current of the first switch power supply module, and the output of the first switch power supply module is regulated through the isolation feedback module, so that the output of the switch power supply can be regulated, and the power of the purifying water tank can be regulated.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a controllable switching power supply according to an embodiment of the present invention;
FIG. 2 is a block diagram of a controllable switching power supply according to another embodiment of the present invention;
FIG. 3 is a schematic circuit diagram of an optical isolation circuit according to an embodiment of the present invention;
FIG. 4 is a schematic circuit diagram of an optocoupler isolation circuit according to another embodiment of the present invention;
FIG. 5 is a schematic circuit diagram of an optocoupler isolation circuit according to another embodiment of the present invention;
FIG. 6 is a schematic circuit diagram of an optocoupler isolation circuit according to another embodiment of the present invention;
fig. 7 is a block diagram of a purified water tank according to an embodiment of the present invention.
Icon: 1-an external power interface; 2-a first switching power supply module; 3-a current detection module; 4-isolating the feedback module; 41-a feedback unit; 42-optocoupler isolation circuits; 421-a first optocoupler isolation module; 422-a second optocoupler isolation module; 423-a first controllable switch module; 424-a second controllable switch module; 5-a main control module; 6-a second switching power supply module; 7-a depressurization module; 10-a controllable switching power supply; 20-water ionizer.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the invention without undue burden, are within the scope of the invention.
Aiming at the problem that the power of the water ionizer in the existing purifying water tank cannot be adjusted, the embodiment of the invention provides a controllable switching power supply and the purifying water tank comprising the same, and the output of the switching power supply can be adjusted, so that the power of the purifying water tank is adjustable. The controllable switching power supply of the present invention will be described in detail first.
Example 1
This embodiment provides a controllable switching power supply, as shown in fig. 1, which includes a first switching power supply module 2, a current detection module 3, an isolation feedback module 4, a main control module 5, a second switching power supply module 6, a voltage step-down module 7, and an external power interface 1.
The first switching power supply module 2 is connected to an external power supply through the external power interface 1 and outputs a voltage to the water ionizer 20. The external power source may be a mains power source or a direct current power source. The first switching power supply module 2 is used for supplying power to a load, which may be a water ionizer or other loads requiring power regulation. For example, the first switching power supply module 2 is used to supply power to the positive and negative electrode pairs of the water ionizer.
The current detection module 3 is connected between the first switching power supply module 2 and the input of the main control module 5. The isolation feedback module 4 is connected between the output ends of the first switching power supply module 2 and the main control module 5. The current detection module 3 is configured to detect an output current of the first switching power supply module 2, and input the output current to the main control module 5. The main control module 5 is configured to provide a polarized voltage to the isolation feedback module 4 according to an output current of the first switching power supply module 2, and adjust an output of the first switching power supply module 2 through the isolation feedback module 4.
The current detection module 3 may employ a current detection circuit commonly used in a switching power supply, such as a current transformer, an RC circuit, and the like.
The main control module 5 may include a control chip, such as a single chip microcomputer, an MCU (Micro Control Unit ), an ASIC (Application SPECIFIC INTERGRATED Circuits, application specific integrated Circuits), a DSP (DIGITAL SIGNAL Processing chip), an FPGA (Field-Programmable GATE ARRAY, field Programmable gate array), etc., and the control chip provides a bias voltage by outputting a PWM signal or high and low levels, and adjusts the duty ratio of the PWM signal according to the input of the current detection module 3, thereby achieving the purpose of changing the output voltage or output power of the first switching power module 2. When the control signal output by the control chip is a PWM signal, the frequency of the PWM signal is greater than the frequency of the first switching power supply module 2, for example, the frequency of the PWM signal may be greater than 50K. The master control module 5 can realize stepless voltage regulation by adjusting the duty ratio of the PWM signal, and the range of the output voltage is wider.
The second switching power supply module 6 is connected to an external power supply through the external power supply interface 1. The voltage dropping module 7 is connected between the second switching power supply module 6 and the main control module 5. The second switching power supply module 6 is independent of the power supply of the first switching power supply module 2, is not commonly grounded with the first switching power supply module 2, and mainly provides electricity for the main control module 5 of the voltage reduction module 7, and can also provide electricity for other components such as a relay, a fan, a water pump, an air pump and the like of the water ion generator. The buck module 7 may be a DC-DC (Direct Current-Direct Current) module or an LDO (low dropout regulator, low dropout linear regulator) module.
It should be noted that the second switching power supply module 6 may not be provided, and the first switching power supply module 2 may supply power to the main control module 5 and other components.
Alternatively, as shown in fig. 2, the isolation feedback module 4 includes a voltage dividing isolation unit 42 and a feedback unit 41. The voltage dividing and isolating unit 42 is connected with the main control module 5 and the first switching power supply module 2, and the feedback unit 41 is connected with the voltage dividing and isolating unit 42 and the first switching power supply module 2.
In an alternative embodiment, voltage dividing isolation unit 42 includes a first resistor R1, a second resistor R2, and an optocoupler isolation circuit. The first resistor R1 and the second resistor R2 are connected in series to form a voltage dividing branch, one end of the voltage dividing branch is connected with the first switching power supply module 2, and the other end of the voltage dividing branch is grounded. The optical coupling isolation circuit is connected with the voltage dividing branch circuit.
In an alternative embodiment, as shown in fig. 3 or fig. 4, the optocoupler isolation circuit includes a first optocoupler isolation module 421, where the first optocoupler isolation module 421 includes an optocoupler U1 and a third resistor R3, and a control end of the optocoupler U1 is connected to the main control module 5. In fig. 3, the first optocoupler isolation module 421 is connected in parallel with the first resistor R1, and in fig. 4, the first optocoupler isolation module 421 is connected in parallel with the second resistor R2.
In another alternative embodiment, as shown in fig. 5, the optocoupler isolation circuit includes a first optocoupler isolation module 421 and a second optocoupler isolation module 422, where the first optocoupler isolation module 421 includes an optocoupler element U1 and a third resistor R3, and a control end of the optocoupler element U1 is connected to the main control module 5. The second optocoupler isolation module 422 includes an optocoupler U2 and a third resistor R4, where a control end of the optocoupler U2 is connected to the main control module 5. The first optocoupler isolation module 421 is connected in parallel with the first resistor R1; the second optocoupler isolation module 422 is connected in parallel with the second resistor R2.
The output voltage can be continuously adjustable by controlling the optocoupler isolation module through PWM signals.
In another alternative embodiment, as shown in fig. 6, the optocoupler isolation circuit includes a first controllable switch module 423 and a second controllable switch module 424, where the first controllable switch module 423 is connected in parallel with a first resistor R1; the second controllable switch module 424 is connected in parallel with the second resistor R2. The first controllable switch module 423 includes a controllable switch S10 and a fourth resistor R5, where a control end of the controllable switch S10 is connected to the main control module 5. The second controllable switch module 424 includes a controllable switch S20 and a fourth resistor R6, and a control end of the controllable switch S20 is connected to the main control module 5.
The voltage division ratio can be realized through the controllable switch, the voltage segmentation is adjustable, and the ratio is equivalent to a plurality of gears. The controllable switch S10 or the controllable switch S20 may be connected in parallel by a plurality of controllable switches.
Wherein the controllable switch can be a solid state relay; or the controllable switch can comprise a field effect transistor and an optical coupler; still alternatively, the controllable switch may comprise a triode and an optocoupler.
The feedback unit 41 may employ a voltage feedback circuit or a current feedback circuit. For example, the feedback unit 41 adopts a voltage positive feedback circuit, is connected between the first resistor R1 and the second resistor R2, and feeds back the divided voltage of the two resistors to the first switching power supply module 2 to regulate the output voltage of the first switching power supply module 2.
The first resistor, the second resistor, the third resistor and the fourth resistor may be one resistor, or may be a resistor combination including a plurality of resistors, and the plurality of resistors may be connected in series or in parallel. The series connection of the resistors can improve the withstand voltage, and the parallel connection of the resistors can improve the power capacity.
The controllable switch power supply and the purifying water tank comprising the same are provided with the current detection module and the isolation feedback module, wherein the current detection module can detect the output current of the first switch power supply module to the water ionizer, when the conductivity of water changes due to the change of water quality in the water ionizer, the output current of the first switch power supply module changes and is detected by the current detection module, the main control module provides polarized voltage to the isolation feedback module according to the output current of the first switch power supply module, and the output of the first switch power supply module is regulated through the isolation feedback module, so that the output of the switch power supply can be regulated, and the power of the purifying water tank can be regulated.
Example two
This embodiment provides a clean water tank comprising a controllable switching power supply 10 and a water ionizer 20 connected to the controllable switching power supply 10, as shown in fig. 7. The positive and negative electrode pairs of the water ionizer 20 are provided on the wall of the purified water tank.
The controllable switch power supply 10 may be a controllable switch power supply according to the first embodiment, and includes a first switch power supply module, a current detection module, an isolation feedback module, a main control module, a second switch power supply module, a voltage reduction module, and an external power interface. The first switching power supply module is connected with an external power supply through an external power supply interface. The first switching power supply module is used for supplying power to the positive electrode and the negative electrode of the water ion generator. The current detection module is connected between the input ends of the first switching power supply module and the main control module. The isolation feedback module is connected between the output ends of the first switching power supply module and the main control module. The current detection module is used for detecting the output current of the first switching power supply module and inputting the output current to the main control module. The main control module is used for providing polarized voltage to the isolation feedback module according to the output current of the first switching power supply module, and the output of the first switching power supply module is regulated through the isolation feedback module. The specific structure thereof is not described herein.
The controllable switch power supply 10 can realize continuous adjustable output voltage or adjustable gear, and realize the purification effect of different water qualities in different areas. The output power can be adjusted according to the use habit of the user, so that the power of the water ion generator 20 is adjusted, the power is adjusted aiming at overload, the overheat of the power device is avoided while the effect is achieved, and the service life is shortened.
The controllable switching power supply and the purifying water tank provided by the embodiment of the invention have the same technical characteristics, so that the same technical problems can be solved, and the same technical effects can be achieved.
In addition, in the description of embodiments of the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above examples are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, but it should be understood by those skilled in the art that the present invention is not limited thereto, and that the present invention is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The controllable switching power supply is characterized by comprising a first switching power supply module, a current detection module, an isolation feedback module, a main control module and an external power interface;
The first switching power supply module is connected with an external power supply through the external power supply interface and outputs voltage to the water ion generator; the current detection module is connected between the first switching power supply module and the input end of the main control module; the isolation feedback module is connected between the first switching power supply module and the output end of the main control module;
the current detection module is used for detecting the output current of the first switching power supply module and inputting the output current to the main control module; the main control module is used for providing polarized voltage to the isolation feedback module according to the output current of the first switching power supply module, and the output of the first switching power supply module is regulated through the isolation feedback module;
The isolation feedback module comprises a voltage division isolation unit and a feedback unit; the voltage division isolation unit is connected with the main control module and the first switching power supply module, and the feedback unit is connected with the voltage division isolation unit and the first switching power supply module;
The voltage division isolation unit comprises a first resistor, a second resistor and an optical coupling isolation circuit; the first resistor and the second resistor are connected in series to form a voltage division branch, one end of the voltage division branch is connected with the first switching power supply module, and the other end of the voltage division branch is grounded; the optocoupler isolation circuit is connected with the voltage division branch circuit.
2. The controllable switching power supply of claim 1, wherein the optocoupler isolation circuit comprises a first optocoupler isolation module connected in parallel with the first resistor or the second resistor.
3. The controllable switching power supply of claim 1, wherein the optocoupler isolation circuit comprises a first optocoupler isolation module and a second optocoupler isolation module, the first optocoupler isolation module being connected in parallel with the first resistor; the second optocoupler isolation module is connected with the second resistor in parallel.
4. The controllable switching power supply of claim 2, wherein the first optocoupler isolation module comprises an optocoupler element and a third resistor, and a control end of the optocoupler element is connected with the master control module.
5. The controllable switching power supply of claim 3, wherein the first optocoupler isolation module and the second optocoupler isolation module each comprise an optocoupler element and a third resistor, and a control end of the optocoupler element is connected with the main control module.
6. The controllable switching power supply of claim 1, wherein the optocoupler isolation circuit comprises a first controllable switching module and a second controllable switching module, the first controllable switching module being connected in parallel with the first resistor; the second controllable switch module is connected with the second resistor in parallel.
7. The controllable switching power supply of claim 6, wherein the first controllable switching module or the second controllable switching module comprises a controllable switch and a fourth resistor; and the control end of the controllable switch is connected with the main control module.
8. The controllable switching power supply of claim 7, wherein the controllable switch is a solid state relay; or the controllable switch comprises a field effect transistor and an optical coupler; or the controllable switch comprises a triode and an optical coupler.
9. The controllable switching power supply of claim 1, further comprising a second switching power supply module and a buck module; the second switching power supply module is connected with an external power supply through the external power supply interface; the step-down module is connected between the second switching power supply module and the main control module.
10. A purified water tank comprising the controllable switching power supply of any one of claims 1 to 9, and further comprising a water ionizer connected to the controllable switching power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810867588.9A CN108736706B (en) | 2018-08-01 | 2018-08-01 | Controllable switch power supply and purifying water tank comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810867588.9A CN108736706B (en) | 2018-08-01 | 2018-08-01 | Controllable switch power supply and purifying water tank comprising same |
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| CN111431402A (en) * | 2020-05-01 | 2020-07-17 | 广东博智林机器人有限公司 | Voltage conversion output circuit |
| CN114105265B (en) * | 2020-08-29 | 2024-09-06 | 平流层复合水离子(深圳)有限公司 | Magnetic rotary water-containing beneficial substance generating device circuit |
| CN112928910B (en) * | 2021-02-08 | 2022-06-28 | 上海空间电源研究所 | Voltage-regulating output switch power supply |
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