CN109888883B - Dual-path switching integrated power supply and dual-path switching unit circuit thereof - Google Patents
Dual-path switching integrated power supply and dual-path switching unit circuit thereof Download PDFInfo
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- CN109888883B CN109888883B CN201910244070.4A CN201910244070A CN109888883B CN 109888883 B CN109888883 B CN 109888883B CN 201910244070 A CN201910244070 A CN 201910244070A CN 109888883 B CN109888883 B CN 109888883B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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Abstract
A double-circuit switching integrated power supply and a double-circuit switching unit circuit thereof are provided. The invention can be powered by two circuits, wherein one circuit is to charge the storage battery by using the solar panel to absorb the light source through the control panel and the operational amplifier unit, and the other circuit is to charge the storage battery by comparing the reference voltage generated by 220v alternating current through transformation, rectification and filtering with the output voltage of the solar panel and then passing through the operational amplifier unit. The switching of the two paths of charging power supplies is determined according to the comparison between the voltage generated by the solar panel and the charging capability provided by the alternating current end. That is, if the voltage generated by the solar panel is lower than the reference voltage determined by the ac terminal, the present invention will select 220v ac to charge the storage battery after voltage conversion, and the rest states select solar energy to charge. Therefore, the invention can keep the stable charge of the storage battery, thereby ensuring the voltage obtained by the load to be stable and ensuring the work of the storage battery.
Description
Technical Field
The invention relates to the field of power supplies, in particular to a double-circuit switching integrated power supply and a double-circuit switching unit circuit in the double-circuit switching integrated power supply.
Background
When camping in the field, the output voltage of the solar panel is greatly influenced by weather, and the output voltage is unstable, so that the solar panel is stored in the storage battery to effectively supply power to electric equipment. However, the storage capacity of the storage battery is limited, and when the stored electric quantity is low, the output voltage of the storage battery can be obviously reduced, so that the electric equipment cannot work normally.
Therefore, there is a need for a device that can timely and automatically charge a battery to stabilize the output voltage of the battery.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a double-circuit switching integrated power supply and a double-circuit switching unit circuit thereof, which can automatically select one with higher charging efficiency to charge a storage battery according to a solar panel and alternating-current input voltage, and keep the voltage of the storage battery. The invention adopts the following technical scheme.
First, to achieve the above object, a two-way switching unit circuit is proposed, which includes: the first indicator lamp and the first resistor are connected in parallel between the output end of the solar panel and the ground; the second indicator lamp and the second resistor are connected in parallel between the output end of the transformation rectifying and filtering unit and the ground; the comparator is connected with the first resistor and the second resistor at two input ends respectively, and is used for comparing the voltages of the first resistor and the second resistor, outputting a high level when the voltage of the first resistor is high, and outputting a low level when the voltage of the second resistor is high; the delay circuit is connected with the output end of the comparator and delays the output level of the comparator; the coil of the relay is connected with the output end of the comparator and the output end of the delay circuit, the movable contact is conducted when the output end of the comparator outputs high level, and the stationary contact is kept to be always conducted when the output end of the comparator outputs low level; the movable contact is connected between the first resistor and the first input end of the operational amplifier unit, and the stationary contact is connected between the second resistor and the second input end of the operational amplifier unit; the public input end of the operational amplifier unit is connected with the output end of the delay circuit; when the movable contact is conducted, the operational amplifier unit amplifies the voltage of the first resistor and outputs the amplified voltage for charging a storage battery; and when the static contact is conducted, the operational amplifier unit amplifies the voltage of the second resistor and outputs the amplified voltage to charge the storage battery.
Optionally, in the above two-way switching unit circuit, the delay circuit includes: one end of the delay resistor is connected with the output end of the comparator, and the other end of the delay resistor is grounded through a delay capacitor and is used for charging the delay capacitor according to the output voltage of the comparator; the first end of the first switching element is connected with the common end of the delay capacitor and the delay resistor, the second end of the first switching element is grounded, and the third end of the first switching element is connected with the third end of the second switching element; the second end of the second switching element and the first end of the second switching element are grounded, the second end of the second switching element is connected with a first delay output resistor, and the other end of the first delay output resistor is connected with a second delay output resistor; the common end of the first delay output resistor and the second delay output resistor is connected with the third end of the third switching element; the second end of the third switching element is connected with the relay, the first end of the third switching element is connected with the second delay output resistor to serve as the output end of the delay circuit to be connected with the common input end of the operational amplifier unit.
Optionally, in the two-way switching unit circuit, the first switching element, the second switching element and the third switching element are high-power MOS transistors, such as KIA9N90H.
Optionally, in the two-way switching unit circuit, the first switching element and the third switching element are P-type MOS transistors; the second switching element is an N-type MOS tube.
Optionally, in the above two-way switching unit circuit, the operational amplifier unit includes a first operational amplifier circuit and a second operational amplifier circuit, where reference ends of the two operational amplifier circuits are connected to an output end of the delay circuit to be used as a common input end of the operational amplifier unit; the input end of the first operational amplifier circuit is used as a first input end of the operational amplifier unit and is connected with the first resistor so as to amplify the voltage of the first resistor according to the voltage of the reference end of the first resistor; the input end of the second operational amplifier circuit is used as a second input end of the operational amplifier unit and is connected with the second resistor so as to amplify the voltage of the second resistor according to the voltage of the reference end of the second resistor; the output end of the first operational amplifier circuit and the output end of the second operational amplifier circuit are connected and used as the output end of the operational amplifier unit to charge the storage battery.
Optionally, in the two-way switching unit circuit, the first operational amplifier circuit and the second operational amplifier circuit use LM358 or LM324.
Meanwhile, in order to achieve the above object, the present invention also provides a two-way switching integrated power supply, including: the solar panel is used for converting solar energy into direct current; the transformation rectifying and filtering unit is connected with a 220V alternating current input end and converts alternating current into direct current; the double-path switching unit adopts the double-path switching unit circuit as described in any of the above, and comprises two input ends respectively connected with the solar panel and the voltage transformation rectifying and filtering unit, wherein the double-path switching unit is used for comparing the voltage of the solar panel with the voltage of the voltage transformation rectifying and filtering unit, and selecting the higher voltage from the voltage to output to the input end of the operational amplifier unit; the output end of the operational amplifier unit is connected with a storage battery, and the operational amplifier unit is used for amplifying the voltage of the input end of the operational amplifier unit so as to charge the storage battery; an illumination unit, the input end of which is connected with the storage battery to provide illumination when needed; the input end of the output control unit is connected with the storage battery, and the output end of the output control unit is respectively connected with the temperature detection unit, the fine adjustment control unit, the fixed voltage 12V unit, the mobile phone control output voltage unit, the UPS power supply and the USB fixed interface; the temperature detection unit is used for detecting the ambient temperature and displaying the detected temperature value; the fine adjustment control unit is used for fine adjustment of the output voltage of the storage battery; the fixed voltage 12V unit is used for; the mobile phone controls an output voltage unit; the UPS power supply is used for providing uninterrupted voltage output; the USB fixed interface is used for outputting voltage to charge the USB connection equipment.
Optionally, in the above two-way switching integrated power supply, the two-way switching integrated power supply is closed by a chassis; the lighting unit, the temperature detection unit, the control port of the fine adjustment control unit, the output port of the fixed voltage 12V unit, the output port of the mobile phone control output voltage unit and the USB fixed interface are all arranged on the front panel of the case.
Optionally, in the above two-way switching integrated power supply, the UPS power supply, the output port of the solar panel, and the 220V ac input end are all disposed on the rear panel of the chassis.
Advantageous effects
The double-circuit switching integrated power supply can be powered by two circuits, wherein one circuit is to utilize a solar panel to absorb a light source and charge a storage battery through a control board and an operational amplifier unit, and the other circuit is to utilize 220v alternating current to charge the storage battery through the operational amplifier unit after comparing the reference voltage generated by voltage transformation (particularly decompression), rectification and filtering with the output voltage of the solar panel. The switching of the two paths of charging power supplies is determined according to the comparison between the voltage generated by the solar panel and the charging capability provided by the alternating current end. That is, if the voltage generated by the solar panel is lower than the reference voltage determined by the ac terminal, the present invention will select 220v ac to charge the storage battery after voltage conversion, and the rest states select solar energy to charge.
The double-circuit switching integrated power supply can use the solar panel to supply power for the storage battery and can also use alternating current 220V for charging. The temperature detector pays attention to the temperature of the machine body at any time, and the fine-tuning power supply can output 0-12V voltage and can be used for some small electronic products; the fixed 12v is convenient to directly use, and the current can reach 3A; four fixed output power supplies controlled by the mobile phone APP are designed, and different voltages can be made according to different requirements. The UPS is used for providing backup AC power supply for electric appliance load equipment without interruption under the condition of abnormal power grid (such as power failure and under-voltage), maintaining equipment for normal operation of the electric appliance, and preventing computer data loss, telephone communication network interruption or instrument loss. The fixed USB interface is used for electronic products such as mobile phones, flat plates and the like, and additionally has an illumination function, so that the fixed USB interface can be used for outdoor picnics.
In the two-way switching unit circuit, the output voltage of the solar panel is compared with the reference voltage which is formed by the 220V alternating current after the voltage transformation rectifying filtering and can charge the storage battery through the comparator. The output end of the comparator controls the on or off of the two output points of the relay, the reference voltage which is formed by the output voltage of the solar panel or the alternating current after transformation rectifying and filtering and can charge the storage battery is provided to the operational amplifier, and the operational amplifier charges the storage battery.
In the switching process of the two-way switching unit circuit, the delay resistor RC is further used for charging the delay capacitor C1, so that stable switching of voltage output is realized, and damage to devices caused by current impact is avoided. The charging process can further ensure that the circuit cannot be switched by mistake due to unstable output voltage of the solar panel.
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.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, and do not limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the overall circuit block diagram of a two-way switched integral power supply of the present invention;
FIG. 2 is a schematic diagram of the front side of a chassis of a two-way switching integrated power supply of the present invention;
FIG. 3 is a schematic diagram of the rear side of the cabinet of the two-way switching integrated power supply of the present invention;
fig. 4 is a circuit diagram of a two-way switching unit in the two-way switching integrated power supply of the present invention.
In the figure, 1 denotes a solar panel; 2 represents a 220V ac input; 3 denotes a two-way switching unit; 4 represents a transformation rectifying and filtering unit; 5 represents an operational amplifier unit; 6 denotes a storage battery; 7 denotes an output control unit; 8 denotes a lighting unit; 9 denotes a temperature detection unit; 10 denotes a fine adjustment control unit; 11 denotes a fixed voltage 12V cell; 12 denotes a mobile phone control output voltage unit; 13 denotes a UPS power source; 14 denotes a USB fixed interface.
Detailed Description
In order to make the purpose and technical solutions of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present invention fall within the protection scope of the present invention.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The meaning of "and/or" in the present invention means that each exists alone or both exist.
The meaning of front and back in the invention is that the user faces the double-way switching integrated power cabinet body, the panel provided with illumination is a front panel, and the opposite of the panel is a back panel; and not to a particular limitation of the mechanism of the device of the present invention.
"Connected" as used herein means either a direct connection between components or an indirect connection between components via other components.
Fig. 1 is a two-way switching integrated power supply according to the present invention, including:
a solar panel 1 for converting solar energy into direct current;
the transformation rectifying and filtering unit 4 is connected with the 220V alternating current input end 2 and converts alternating current into direct current;
The two-way switching unit 3 adopts a two-way switching unit circuit shown in fig. 4, and comprises two input ends which are respectively connected with the solar panel 1 and the voltage transformation rectifying and filtering unit 4, wherein the two-way switching unit 3 is used for comparing the voltage of the solar panel 1 with the voltage of the voltage transformation rectifying and filtering unit 4 and selecting the higher voltage from the voltages to output to the input end of the operational amplifier unit 5;
The output end of the operational amplifier unit 5 is connected with a storage battery 6, and the operational amplifier unit 5 is used for amplifying the voltage of the input end of the operational amplifier unit to charge the storage battery 6;
a lighting unit 8, an input end of which is connected with the storage battery 6 to provide lighting when needed;
The input end of the output control unit 7 is connected with the storage battery 6, and the output end of the output control unit is respectively connected with the temperature detection unit 9, the fine adjustment control unit 10, the fixed voltage 12V unit 11, the mobile phone control output voltage unit 12, the UPS power supply 13 and the USB fixed interface 14;
The temperature detection unit 9 is used for detecting the ambient temperature and displaying the detected temperature value;
the fine adjustment control unit 10 is used for fine adjustment of the output voltage of the storage battery 6;
the fixed voltage 12V unit 11 is used for;
The mobile phone controls the output voltage unit 12;
the UPS power source 13 is configured to provide an uninterrupted voltage output;
the USB fixed interface 14 is used for outputting a voltage to charge the USB connection device.
Referring to fig. 2, the above-mentioned two-way switching integrated power supply is enclosed by the cabinet. The lighting unit 8, the temperature detection unit 9, the control port of the fine adjustment control unit 10, the output port of the fixed voltage 12V unit 11, the output port of the mobile phone control output voltage unit 12 and the USB fixed interface 14 are all arranged on the front panel of the case. Referring to fig. 3, the rear panel of the power supply is provided with the UPS power source 13, the output port of the solar panel 1, and the 220V ac input 2.
Fig. 4 shows a circuit of the two-way switching unit in the present invention. It comprises the following steps:
the first indicator lamp L1 and the first resistor R1 are connected in parallel between the output end of the solar panel and the ground;
the second indicator lamp L2 and the second resistor R2 are connected in parallel between the output end of the transformation rectifying and filtering unit and the ground;
The comparator U1 may employ an LM361, two input ends of which are respectively connected to the first resistor R1 and the second resistor R2, and configured to compare voltages of the first resistor R1 and the second resistor R2, output a high level when the voltage of the first resistor R1 is high, and output a low level when the voltage of the second resistor R2 is high;
The delay circuit is connected with the output end of the comparator U1 and delays the output level of the comparator U1;
The coil of the relay J is connected with the output end of the comparator U1 and the output end of the delay circuit, the movable contact J1 is conducted when the output end of the comparator U1 outputs a high level, and the fixed contact J2 is kept to be always conducted when the output end of the comparator U1 outputs a low level; the movable contact J1 is connected between the first resistor R1 and the first input end of the operational amplifier unit 5, and the stationary contact J2 is connected between the second resistor R2 and the second input end of the operational amplifier unit 5; the public input end of the operational amplifier unit 5 is connected with the output end of the delay circuit; when the movable contact J1 is conducted, the operational amplifier unit 5 amplifies the voltage of the first resistor R1 and outputs the amplified voltage for charging a storage battery; and when the fixed contact J2 is conducted, the operational amplifier unit 5 amplifies the voltage of the second resistor R2 and outputs the amplified voltage to charge a storage battery.
Specifically, the delay circuit includes:
One end of the delay resistor RC is connected with the output end of the comparator U1, and the other end of the delay resistor RC is grounded through a delay capacitor C1 and is used for charging the delay capacitor C1 according to the output voltage of the comparator U1;
A first switching element Q1, a first end of which is connected to a common end of the delay capacitor C1 and the delay resistor RC, a second end of which is grounded, and a third end of which is connected to a third end of the second switching element Q2; the second end of the second switching element Q2 and the first end of the second switching element Q2 are grounded, the second end of the second switching element Q2 is connected with a first delay output resistor RV1, and the other end of the first delay output resistor RV1 is connected with a second delay output resistor RV 2; the common end of the first delay output resistor RV1 and the second delay output resistor RV2 is connected with the third end of the third switching element Q3; the second end of the third switching element Q3 is connected to the relay J, and the first end of the third switching element Q3 is connected to the second delay output resistor RV2, and is used as an output end of the delay circuit to be connected to a common input end of the op-amp unit 5.
When the voltage of the output end of the solar panel is higher than the reference voltage which is formed by the 220V alternating current after the transformation rectifying filtering and can charge the storage battery, the circuit outputs a high level at the output end of the comparator U1, and otherwise outputs a low level. At a high level, the delay capacitor C1 is charged by the delay resistor RC. In the charging process, the voltage of the delay capacitor C1 gradually increases from a low voltage, and when the charging is finished, the high voltage at the common end of the delay capacitor C1 and the delay resistor RC switches the second switching element Q2 from an off state to an on state, so that the first switching element Q1 is driven to be turned on, the third switching element Q3 is turned on by the voltage division of the first delay output resistor RV1 and the second delay output resistor RV2, and the second delay output resistor RV2 forms a feedback resistor of the operational amplifier unit 5 connected at the lower stage of the second delay output resistor RV. The second delay output resistor RV2 is used as a feedback resistor, and its voltage controls the amplification ratio of the op-amp.
Meanwhile, in the charging and switching process, the output end of the comparator U1 outputs a high level to drive the coil of the relay J, and the movable contact J1 is conducted. Thus, the output voltage of the solar panel is provided to the first operational amplifier circuit U51 in the operational amplifier unit through the first resistor R1 to be amplified according to the amplification ratio determined by the feedback resistor. When the output terminal of the comparator U1 outputs a low level, the coil of the relay J is not driven with current, and thus the stationary contact J2 is maintained to be turned on. That is, the reference voltage which is formed by the 220V ac power after the voltage transformation rectifying filtering and can charge the storage battery is amplified by the second operational amplifier circuit U52 according to the amplification ratio determined by the feedback resistor, so as to charge the storage battery.
Specifically, in the above circuit, the first switching element Q1, the second switching element Q2, and the third switching element Q3 may be implemented by high-power MOS transistors, such as KIA9N 90H. The first switching element Q1 and the third switching element Q3 are P-type MOS transistors; the second switching element Q2 is an N-type MOS tube.
Specifically, in the above circuit, the op-amp unit 5 includes a first op-amp circuit U51 and a second op-amp circuit U52, which may employ LM358 or LM324. The reference ends of the two operational amplifier circuits are connected with the output end of the delay circuit to serve as a common input end of the operational amplifier unit 5;
The input end of the first operational amplifier circuit U51 is connected to the first resistor R1 as a first input end of the operational amplifier unit 5, so as to amplify the voltage of the first resistor R1 according to the voltage of the reference end thereof;
The input end of the second operational amplifier circuit U52 is connected to the second resistor R2 as a second input end of the operational amplifier unit 5, so as to amplify the voltage of the second resistor R2 according to the voltage of the reference end thereof;
the output end of the first operational amplifier circuit U51 and the output end of the second operational amplifier circuit U52 are connected, and the output end of the operational amplifier unit 5 is used for charging the storage battery 6.
The foregoing is a description of embodiments of the invention, which are specific and detailed, but are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (6)
1. A two-way switching integrated power supply, comprising:
A solar panel (1) for converting solar energy into direct current;
The transformation rectifying and filtering unit (4) is connected with the 220V alternating current input end (2) and converts alternating current into direct current;
The double-path switching unit (3) adopts a double-path switching unit circuit, and comprises two input ends which are respectively connected with the solar panel (1) and the voltage transformation rectifying and filtering unit (4), wherein the double-path switching unit (3) is used for comparing the voltage of the solar panel (1) with the voltage of the voltage transformation rectifying and filtering unit (4) and selecting the higher voltage from the voltage to output to the input end of the operational amplifier unit (5);
the two-way switching unit circuit includes:
The solar panel comprises a first indicator lamp (L1) and a first resistor (R1), wherein the first indicator lamp and the first resistor are connected in parallel between the output end of the solar panel and the ground;
the second indicator lamp (L2) and the second resistor (R2) are connected in parallel between the output end of the transformation rectifying and filtering unit and the ground;
A comparator (U1) with two input ends respectively connected with the first resistor (R1) and the second resistor (R2) for comparing the voltages of the first resistor (R1) and the second resistor (R2), outputting a high level when the voltage of the first resistor (R1) is high, and outputting a low level when the voltage of the second resistor (R2) is high;
a delay circuit connected to the output end of the comparator (U1) for delaying the output level of the comparator (U1);
The coil of the relay (J) is connected with the output end of the comparator (U1) and the output end of the delay circuit, the movable contact (J1) is conducted when the output end of the comparator (U1) outputs a high level, and the stationary contact (J2) is kept to be always conducted when the output end of the comparator (U1) outputs a low level; the movable contact (J1) is connected between the first resistor (R1) and the first input end of the operational amplifier unit (5), and the stationary contact (J2) is connected between the second resistor (R2) and the second input end of the operational amplifier unit (5); the public input end of the operational amplifier unit (5) is connected with the output end of the delay circuit; when the movable contact (J1) is conducted, the operational amplifier unit (5) amplifies the voltage of the first resistor (R1) and outputs the amplified voltage to charge a storage battery;
The output end of the operational amplifier unit (5) is connected with a storage battery (6); when the static contact (J2) is conducted, the operational amplifier unit (5) amplifies the voltage of the second resistor (R2) and outputs the amplified voltage to charge the storage battery (6);
the operational amplifier unit (5) comprises a first operational amplifier circuit (U51) and a second operational amplifier circuit (U52), wherein reference ends of the two operational amplifier circuits are connected with the output end of the delay circuit to serve as a common input end of the operational amplifier unit (5);
the input end of the first operational amplifier circuit (U51) is used as a first input end of the operational amplifier unit (5) to be connected with the first resistor (R1) so as to amplify the voltage of the first resistor (R1) according to the voltage of the reference end of the first resistor;
the input end of the second operational amplifier circuit (U52) is used as a second input end of the operational amplifier unit (5) to be connected with the second resistor (R2) so as to amplify the voltage of the second resistor (R2) according to the voltage of the reference end of the second resistor;
the output end of the first operational amplifier circuit (U51) and the output end of the second operational amplifier circuit (U52) are connected and used as the output end of the operational amplifier unit (5) to charge the storage battery (6);
the delay circuit includes:
one end of the delay Resistor (RC) is connected with the output end of the comparator (U1), and the other end of the delay resistor is grounded through a delay capacitor (C1) and is used for charging the delay capacitor (C1) according to the output voltage of the comparator (U1);
a first switching element (Q1), the first end of which is connected with the common end of the delay capacitor (C1) and the delay Resistor (RC), the second end of which is grounded, and the third end of which is connected with the third end of the second switching element (Q2); a second end of the second switching element (Q2) and a first end of the second switching element (Q2) are grounded, the second end of the second switching element (Q2) is connected with a first delay output resistor (RV 1), and the other end of the first delay output resistor (RV 1) is connected with a second delay output resistor (RV 2); the common end of the first delay output resistor (RV 1) and the second delay output resistor (RV 2) is connected with the third end of the third switching element (Q3); the second end of the third switching element (Q3) is connected with the relay (J), the first end of the third switching element (Q3) is connected with the second delay output resistor (RV 2) as the output end of the delay circuit, and the output end of the delay circuit is connected with the public input end of the operational amplifier unit (5);
A lighting unit (8) with an input connected to the battery (6) to provide illumination when required;
the input end of the output control unit (7) is connected with the storage battery (6), and the output end of the output control unit is respectively connected with the temperature detection unit (9), the fine adjustment control unit (10), the fixed voltage 12V unit (11), the mobile phone control output voltage unit (12), the UPS power supply (13) and the USB fixed interface (14);
the temperature detection unit (9) is used for detecting the ambient temperature and displaying the detected temperature value;
The fine adjustment control unit (10) is used for fine adjustment of the output voltage of the storage battery (6);
-said fixed voltage 12V unit (11);
The mobile phone controls an output voltage unit (12);
-the UPS power source (13) is configured to provide an uninterrupted voltage output;
the USB fixed interface (14) is used for outputting voltage to charge the USB connection device.
2. The two-way switching integrated power supply according to claim 1, wherein the first switching element (Q1), the second switching element (Q2) and the third switching element (Q3) are all high-power MOS transistors.
3. The two-way switching integrated power supply according to claim 2, wherein the first switching element (Q1) and the third switching element (Q3) are P-type MOS transistors; the second switching element (Q2) is an N-type MOS tube.
4. The two-way switched-mode integrated power supply of claim 1, wherein said first operational amplifier circuit (U51) and said second operational amplifier circuit (U52) employ LM358 or LM324.
5. The two-way switched integral power supply of claim 1, which is enclosed by a cabinet; the lighting unit (8), the temperature detection unit (9), the control port of the fine adjustment control unit (10), the output port of the fixed voltage 12V unit (11), the output port of the mobile phone control output voltage unit (12) and the USB fixed interface (14) are all arranged on the front panel of the chassis.
6. The two-way switching power supply according to claim 5, wherein the UPS power supply (13), the output port of the solar panel (1), and the 220V ac input port (2) are all disposed on a rear panel of the chassis.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910244070.4A CN109888883B (en) | 2019-03-28 | 2019-03-28 | Dual-path switching integrated power supply and dual-path switching unit circuit thereof |
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| CN201910244070.4A CN109888883B (en) | 2019-03-28 | 2019-03-28 | Dual-path switching integrated power supply and dual-path switching unit circuit thereof |
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| CN109888883A CN109888883A (en) | 2019-06-14 |
| CN109888883B true CN109888883B (en) | 2024-05-31 |
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| CN110890072A (en) * | 2019-12-04 | 2020-03-17 | 中山大学 | Self-powered electronic paper drive circuit and electronic paper display equipment |
| CN111478431B (en) * | 2020-05-19 | 2024-08-13 | 南京机电职业技术学院 | Power supply circuit for financial data reading equipment |
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