CN220822612U - DC reclosing power supply circuit and DC reclosing - Google Patents
DC reclosing power supply circuit and DC reclosing Download PDFInfo
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- CN220822612U CN220822612U CN202322600815.0U CN202322600815U CN220822612U CN 220822612 U CN220822612 U CN 220822612U CN 202322600815 U CN202322600815 U CN 202322600815U CN 220822612 U CN220822612 U CN 220822612U
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Abstract
The utility model provides a direct-current reclosing power supply circuit and a direct-current reclosing, and relates to the technical field of electronics. The circuit comprises: the anti-surge module, the anti-reverse connection module, the filtering module and the voltage reducing module comprise a voltage reducing chip, a filtering sub-module, an adjusting sub-module and a voltage dividing sub-module, and the anti-surge module, the anti-reverse connection module, the filtering module, the voltage reducing chip, the voltage dividing sub-module, the adjusting sub-module and the filtering sub-module are all electrically connected. Therefore, the high working voltage can be reduced to the low working voltage through the voltage reduction chip and the plurality of resistors, so that the direct-current reclosing can be connected with a wide range of working voltage, and different requirements of users are met; the anti-surge module and the anti-reverse connection module can protect a circuit, and the filtering module can avoid interference of other signals.
Description
Technical Field
The utility model relates to the technical field of electronics, in particular to a direct-current reclosing power supply circuit and a direct-current reclosing.
Background
With the vigorous development of the power system in China, the stability and the safety of the power supply system are more highly required. Nowadays, the application scenes of the direct current power supply in life are gradually increased, and the stability, the universality and the safety of the direct current power supply equipment are important. The existing direct current reclosure without a wide working voltage range in the market has low applicability and cannot meet the diversified demands of users.
Disclosure of utility model
In view of the above, the present utility model aims to overcome the defects in the prior art, and provide a dc reclosing power circuit and a dc reclosing for solving the problem of no dc reclosing with a wide operating voltage range.
The utility model provides the following technical scheme:
In a first aspect, the utility model provides a direct current reclosing power supply circuit, which comprises an anti-surge module, an anti-reverse connection module, a filtering module and a voltage reduction module, wherein the voltage reduction module comprises a voltage reduction chip, a filtering sub-module, a regulating sub-module and a voltage division sub-module;
The first output end of the anti-surge module is electrically connected with the first input end of the anti-reverse connection module, the second output end of the anti-surge module is electrically connected with the second input end of the anti-reverse connection module, the first output end of the anti-reverse connection module is electrically connected with the first input end of the filter module, the second output end of the anti-reverse connection module is electrically connected with the second input end of the filter module, the first output end of the filter module is electrically connected with the first input end of the filter sub-module, the second output end of the filter module is grounded, the grounding pin of the voltage reducing chip is electrically connected with the power input pin of the voltage reducing chip, the second output end of the filter sub-module is electrically connected with the capacitor pin of the voltage reducing chip, the power switch output pin of the voltage reducing chip is electrically connected with the second input end of the filter sub-module, the third output end of the filter sub-module, the fourth output end of the filter sub-module is electrically connected with the voltage reducing chip, the fifth output end of the filter sub-module is electrically connected with the first input end of the filter sub-module, the voltage reducing chip is electrically connected with the first input end of the filter sub-module, the first output end of the voltage reducing chip is electrically connected with the first output end of the filter sub-module, the voltage reducing chip is electrically connected with the first output end of the filter sub-module is electrically connected with the output end of the voltage reducing chip, the first output end of the voltage division sub-module is grounded.
In one embodiment, the anti-surge module comprises a first resistor and a varistor;
The first end of the first resistor is electrically connected with the positive electrode of the power input end, the second end of the first resistor is electrically connected with the first end of the piezoresistor, and the second end of the piezoresistor is electrically connected with the negative electrode of the power input end;
the first end of the first resistor is a first input end of the anti-surge module, the second end of the first resistor is a first output end of the anti-surge module, and the second end of the piezoresistor is a second output end of the anti-surge module.
In an embodiment, the anti-reverse connection module comprises a second resistor, a MOS tube and a voltage stabilizing tube;
The first end of the second resistor is electrically connected with the second end of the first resistor, the second end of the second resistor is electrically connected with the source electrode of the MOS tube, the drain electrode of the MOS tube is electrically connected with the second end of the piezoresistor, the cathode of the voltage stabilizing tube is electrically connected with the source electrode of the MOS tube, and the anode of the voltage stabilizing tube is electrically connected with the grid electrode of the MOS tube;
the first end of the second resistor is the first input end of the anti-reverse connection module and the first output end of the anti-reverse connection module, the drain electrode of the MOS tube is the second input end of the anti-reverse connection module, and the anode electrode of the voltage stabilizing tube is the second output end of the anti-reverse connection module.
In one embodiment, the circuit further comprises a transient diode, a cathode of the transient diode is electrically connected with the first end of the second resistor, and an anode of the transient diode is electrically connected with an anode of the voltage regulator tube.
In an embodiment, the filtering module includes a first capacitor, a second capacitor, and a third capacitor;
The first end of the first capacitor is electrically connected with the cathode of the transient diode, the second end of the first capacitor is electrically connected with the anode of the transient diode, the first end of the second capacitor is electrically connected with the first end of the first capacitor, the second end of the second capacitor is electrically connected with the second end of the first capacitor, the first end of the third capacitor is electrically connected with the first end of the second capacitor, and the second end of the third capacitor is electrically connected with the second end of the second capacitor;
The first end of the first capacitor is the first input end of the filtering module, the second end of the first capacitor is the second input end of the filtering module, the first end of the third capacitor is the first output end of the filtering module, and the first end of the third capacitor is the second output end of the filtering module.
In an embodiment, the filtering submodule includes an inductor, a fourth capacitor, a fifth capacitor, a sixth capacitor and a schottky diode;
The first end of the fourth capacitor is electrically connected with the first end of the third capacitor and the power input pin, the second end of the fourth capacitor is electrically connected with the capacitor pin, the first end of the inductor is electrically connected with the output pin of the power switch, the second end of the inductor is electrically connected with the first end of the fifth capacitor, the first end of the sixth capacitor and the first end of the seventh capacitor, and the second end of the fifth capacitor, the second end of the sixth capacitor and the second end of the seventh capacitor are all grounded;
the first end of the fourth capacitor is the first input end of the filtering submodule and the first output end of the filtering submodule, the second end of the fourth capacitor is the second output end of the filtering submodule, the first end of the inductor is the second input end of the filtering submodule, the second end of the fifth capacitor is the third output end of the filtering submodule, the second end of the sixth capacitor is the fourth output end of the filtering submodule, the second end of the seventh capacitor is the fifth output end of the filtering submodule, and the second end of the inductor is the sixth output end of the filtering submodule.
In one embodiment, the regulation submodule includes a third resistor and a fourth resistor;
The first end of the third resistor is electrically connected with the current detection positive end pin, the second end of the third resistor is electrically connected with the current detection negative end pin, the first end of the fourth resistor is electrically connected with the first end of the third resistor, the second end of the fourth resistor is electrically connected with the second end of the third resistor, and the first end of the fourth resistor is electrically connected with the second end of the inductor;
The second end of the inductor is a sixth output end of the filtering submodule, the first end of the fourth resistor is a first input end of the adjusting submodule, and the second end of the third resistor is a first output end of the adjusting submodule.
In an embodiment, the filtering submodule further includes a seventh capacitor;
The first end of the seventh capacitor is electrically connected with the second end of the fourth resistor, and the second end of the seventh capacitor is electrically connected with the feedback pin;
The first end of the seventh capacitor is a third input end of the filtering sub-module, and the second end of the seventh capacitor is a seventh output end of the filtering sub-module.
In an embodiment, the voltage dividing submodule includes a first voltage dividing resistor, a second voltage dividing resistor and a third voltage dividing resistor, wherein a first end of the first voltage dividing resistor is electrically connected with a second end of the inductor, a second end of the first voltage dividing resistor is electrically connected with a power output end, a first end of the second voltage dividing resistor is electrically connected with a second end of the first voltage dividing resistor, a second end of the second voltage dividing resistor is electrically connected with a first end of the third voltage dividing resistor, a first end of the third voltage dividing resistor is electrically connected with a second end of the seventh capacitor, and a second end of the third voltage dividing resistor is grounded;
The first end of the first voltage dividing resistor is a first input end of the voltage dividing sub-module, the first end of the third voltage dividing resistor is a second input end of the voltage dividing sub-module, and the second end of the third voltage dividing resistor is a first output end of the voltage dividing sub-module.
In a second aspect, the present utility model provides a dc reclosing device, including the dc reclosing power circuit of the first aspect.
The utility model provides a direct-current reclosing power supply circuit and a direct-current reclosing, which comprise an anti-surge module, an anti-reverse connection module, a filtering module and a voltage reduction module, wherein the voltage reduction module comprises a voltage reduction chip, a filtering sub-module, an adjusting sub-module and a voltage division sub-module, and the anti-surge module, the anti-reverse connection module, the filtering module, the voltage reduction chip, the voltage division sub-module, the adjusting sub-module and the filtering sub-module are all electrically connected. Therefore, the high working voltage can be reduced to the low working voltage through the voltage reduction chip and the plurality of resistors, so that the direct-current reclosing can be connected with a wide range of working voltage, and different requirements of users are met; the anti-surge module and the anti-reverse connection module can protect a circuit, and the filtering module can avoid interference of other signals. In order to make the above objects, features and advantages of the present utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a schematic diagram of a dc reclosing power circuit according to an embodiment of the present application.
Description of main reference numerals:
10-an anti-surge module; 20-an anti-reverse connection module; 30-a filtering module; 40-a depressurization module; 401-a buck chip; 402-a filtering sub-module; 403-a conditioning sub-module; 404-voltage dividing sub-module.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are 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 one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the templates herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Example 1
The embodiment of the utility model provides a direct-current reclosing power supply circuit which is used for reducing high working voltage to low working voltage and realizing connection of wide-range working voltage.
Referring to fig. 1, the dc reclosing power circuit includes an anti-surge module 10, an anti-reverse connection module 20, a filtering module 30, and a voltage-reducing module 40, where the voltage-reducing module 40 includes a voltage-reducing chip 401, a filtering sub-module 402, a regulating sub-module 403, and a voltage-dividing sub-module 404.
The first output end of the anti-surge module 10 is electrically connected with the first input end of the anti-reverse connection module 20, the second output end of the anti-surge module 10 is electrically connected with the second input end of the anti-reverse connection module 20, the first output end of the anti-reverse connection module 20 is electrically connected with the first input end of the filter module 30, the second output end of the anti-reverse connection module 20 is electrically connected with the second input end of the filter module 30, the first output end of the filter module 30 is electrically connected with the first input end of the filter sub-module 402, the second output end of the filter module 30 is grounded, the ground pin GND of the buck chip 401 is electrically connected with the power input pin VIN of the buck chip 401, the second output end of the filter sub-module 402 is electrically connected with the capacitor pin VC of the buck chip 401, the power switch output pin SW of the buck chip 401 is electrically connected with the second input end of the filter module 402, the first output end of the buck chip 403 is electrically connected with the first input end of the buck chip 403, the second output end of the buck chip 403 is electrically connected with the feedback pin of the buck chip 401, the second output end of the buck chip 403 is electrically connected with the first input of the buck chip 403, the feedback pin of the buck chip 401 is electrically connected with the first output of the buck chip 401, the feedback pin of the feedback chip 403 is electrically connected with the output of the buck chip 401 is electrically connected with the output pin of the feedback pin of the buck chip 401, the sixth output terminal of the filtering sub-module 402 is electrically connected to the first input terminal of the voltage dividing sub-module 404, the seventh output terminal of the filtering sub-module 402 is electrically connected to the second input terminal of the voltage dividing sub-module 404, and the first output terminal of the voltage dividing sub-module 404 is grounded.
In this embodiment, the dc reclosing power supply circuit converts the input high operating voltage into the low operating voltage through the connections between the anti-surge module 10, the anti-reverse connection module 20, the filter module 30, the buck chip 401, the filter sub-module 402, the regulator sub-module 403 and the voltage dividing sub-module 404.
In a specific embodiment, the anti-surge module 10 includes a first resistor RX1 and a varistor RV1; the first end of the first resistor RX1 is electrically connected with the positive electrode L of the power input end, the second end of the first resistor RX1 is electrically connected with the first end of the piezoresistor RV1, and the second end of the piezoresistor RV1 is electrically connected with the negative electrode N of the power input end; the first end of the first resistor RX1 is a first input end of the anti-surge module 10, the second end of the first resistor RX1 is a first output end of the anti-surge module 10, and the second end of the varistor RV1 is a second output end of the anti-surge module 10.
In this embodiment, the first resistor RX1 and the varistor RV1 form an anti-surge module 10 for protecting a circuit from surge voltages. Surge voltage is a sudden, instantaneous voltage change. The first resistor RX1 is used for limiting current and preventing the excessive current from damaging elements in the circuit; meanwhile, when the voltage is larger than the voltage threshold of the piezoresistor RV1, the impedance of the piezoresistor RV1 becomes low, the current passing through the piezoresistor RV1 is increased, the piezoresistor RV1 is conducted at the moment, surge voltage is prevented from being conducted to the back-end circuit, and therefore the back-end circuit is protected from being damaged by the surge voltage.
In one embodiment, the anti-reverse connection module 20 includes a second resistor, a MOS transistor, and a voltage regulator; the first end of the second resistor R89 is electrically connected with the second end of the first resistor RX1, the second end of the second resistor R89 is electrically connected with the source electrode of the MOS tube Q1, the drain electrode of the MOS tube Q1 is electrically connected with the second end of the piezoresistor RV1, the cathode of the voltage stabilizing tube ZD1 is electrically connected with the source electrode of the MOS tube Q1, and the anode of the voltage stabilizing tube ZD1 is electrically connected with the grid electrode of the MOS tube Q1; the first end of the second resistor R89 is the first input end of the anti-reverse connection module 20 and the first output end of the anti-reverse connection module 20, the drain electrode of the MOS transistor Q1 is the second input end of the anti-reverse connection module 20, and the anode of the voltage stabilizing tube ZD1 is the second output end of the anti-reverse connection module 20.
In this embodiment, a second resistor R89, a metal-oxide-Semiconductor Field-Effect Transistor (MOS transistor) Q1, and a voltage regulator ZD1 form an anti-reverse connection module 20 for protecting a circuit when the positive and negative poles of an input power supply are reversely connected. The second resistor R89 is a voltage dividing resistor, and is used for dividing the voltage of the MOS transistor Q1 to reduce the voltage on the MOS transistor Q1, thereby playing a role in protecting the MOS transistor Q1; when the positive electrode and the negative electrode of the power input end are connected in the positive direction, the MOS tube Q1 is conducted, and current can normally flow; when the anode and the cathode of the power input end are reversely connected, the MOS tube Q1 is closed, and the current is cut off and cannot flow in, so that a rear-end circuit is protected; meanwhile, the voltage stabilizing tube ZD1 is connected in parallel with the source end of the MOS tube Q1, so that the MOS tube Q1 is conducted, meanwhile, the conducting voltage is limited, and further the MOS tube Q1 is protected, and the service life is prolonged. The types of the MOS transistor Q1 and the voltage regulator transistor ZD1 are not limited, but the voltage of the voltage regulator transistor ZD1 needs to be smaller than the maximum voltage that the MOS transistor Q1 can withstand.
In a specific embodiment, the circuit further includes a transient diode TV3, a cathode of the transient diode TV3 is electrically connected to the first end of the second resistor R89, and an anode of the transient diode TV3 is electrically connected to an anode of the regulator ZD 1.
In this embodiment, the transient diode TV3 is also used to protect the back-end circuit from over-voltage. The operating voltage of the circuit connection is 20v-100v, and the threshold of the operating voltage is 100v, so the voltage of the transient diode TV3 needs to be less than 100v. If the operating voltage to which the circuit is to be connected is a voltage value in another range, the voltage of the transient diode TV3 needs to be smaller than the maximum threshold value of that range.
In a specific embodiment, the filtering module 30 includes a first capacitor +c88, a second capacitor +c81, and a third capacitor C82; the first end of the first capacitor +c88 is electrically connected with the cathode of the transient diode TV3, the second end of the first capacitor +c88 is electrically connected with the anode of the transient diode TV3, the first end of the second capacitor +c81 is electrically connected with the first end of the first capacitor +c88, the second end of the second capacitor +c81 is electrically connected with the second end of the first capacitor +c88, the first end of the third capacitor C82 is electrically connected with the first end of the second capacitor +c81, and the second end of the third capacitor C82 is electrically connected with the second end of the second capacitor +c81; the first end of the first capacitor +c88 is the first input end of the filter module 30, the second end of the first capacitor +c88 is the second input end of the filter module 30, the first end of the third capacitor C82 is the first output end of the filter module 30, and the first end of the third capacitor C82 is the second output end of the filter module 30.
In this embodiment, the first capacitor +c88, the second capacitor +c81 and the third capacitor C82 form the filtering module 30 for filtering. The first capacitor +c88 and the second capacitor +c81 are polar capacitors, and the third capacitor C82 is a nonpolar capacitor. The power supply connected with the direct current reclosing power supply circuit is direct current, so that the capacitor with polarity and the capacitor without polarity can be used.
In one embodiment, the filtering submodule 402 includes an inductor L1, a fourth capacitor C83, a fifth capacitor +c86, a sixth capacitor C84C85, and a schottky diode D30; the first end of the fourth capacitor C83 is electrically connected to the first end of the third capacitor C82 and the power input pin VIN, the second end of the fourth capacitor C83 is electrically connected to the capacitor pin VC, the first end of the inductor L1 is electrically connected to the output pin SW of the power switch, the second end of the inductor L1 is electrically connected to the first end of the fifth capacitor +c86, the first end of the sixth capacitor C84 and the first end of the seventh capacitor C85, and the second end of the fifth capacitor +c86, the second end of the sixth capacitor C84 and the second end of the seventh capacitor C85 are all grounded; the first end of the fourth capacitor C83 is the first input end of the filtering submodule 402 and the first output end of the filtering submodule 402, the second end of the fourth capacitor C83 is the second output end of the filtering submodule 402, the first end of the inductor L1 is the second input end of the filtering submodule 402, the second end of the fifth capacitor +c86 is the third output end of the filtering submodule 402, the second end of the sixth capacitor C84 is the fourth output end of the filtering submodule 402, the second end of the seventh capacitor C85 is the fifth output end of the filtering submodule 402, and the second end of the inductor L1 is the sixth output end of the filtering submodule 402.
In this embodiment, the inductor L1, the fourth capacitor C83, the fifth capacitor +c86, the sixth capacitor C84 and the schottky diode D30 form a filtering sub-module 402 for filtering interference of other signals, so that the output voltage is more stable. According to the characteristics of the buck chip 401, a fourth capacitor C83 is connected between the power input pin VIN and the capacitor pin VC to eliminate noise; the inductor L1, the fourth capacitor C83, the fifth capacitor +c86, the sixth capacitor C84 and the schottky diode D30 are also used for filtering.
In a specific embodiment, the adjustment submodule 403 includes a third resistor R90 and a fourth resistor R91; the first end of the third resistor R90 is electrically connected with the current detection positive terminal pin CSP, the second end of the third resistor R90 is electrically connected with the current detection negative terminal pin CSN, the first end of the fourth resistor R91 is electrically connected with the first end of the third resistor R90, the second end of the fourth resistor R91 is electrically connected with the second end of the third resistor R90, and the first end of the fourth resistor R91 is electrically connected with the second end of the inductor L1; the second end of the inductor L1 is a sixth output end of the filtering submodule 402, the first end of the fourth resistor R91 is a first input end of the adjusting submodule 403, and the second end of the third resistor R90 is a first output end of the adjusting submodule 403.
In the present embodiment, the third resistor R90 and the fourth resistor R91 form a regulating sub-module 403 for limiting the maximum output current. The third resistor R90 and the fourth resistor R91 have larger resistance values, and the parallel connection of the two resistors with large resistance values can reduce the resistance, so that the voltage reducing function of the voltage reducing chip 401 is normally realized, and the cost of using the resistor with large resistance value is lower. In other embodiments, the adjustment sub-module 403 may use only a resistor with a smaller resistance, but the cost will be higher.
In a specific embodiment, the filtering submodule 402 further includes a seventh capacitor C85; a first end of the seventh capacitor C85 is electrically connected to the second end of the fourth resistor R91, and a second end of the seventh capacitor C85 is electrically connected to the feedback pin FB; the first end of the seventh capacitor C85 is a third input end of the filtering submodule 402, and the second end of the seventh capacitor C85 is a seventh output end of the filtering submodule 402.
In the present embodiment, the filtering sub-module 402 further includes a seventh capacitor C85, and the seventh capacitor C85 is also used for filtering.
In a specific embodiment, the voltage dividing submodule 404 includes a first voltage dividing resistor R92, a second voltage dividing resistor R93, and a third voltage dividing resistor R94, where a first end of the first voltage dividing resistor R92 is electrically connected to the second end of the inductor L1, a second end of the first voltage dividing resistor R92 is electrically connected to the power output terminal VDD, a first end of the second voltage dividing resistor R93 is electrically connected to the second end of the first voltage dividing resistor R92, a second end of the second voltage dividing resistor R93 is electrically connected to a first end of the third voltage dividing resistor R94, a first end of the third voltage dividing resistor R94 is electrically connected to a second end of the seventh capacitor C85, and a second end of the third voltage dividing resistor R94 is grounded; the first end of the first voltage dividing resistor R92 is a first input end of the voltage dividing sub-module 404, the first end of the third voltage dividing resistor R94 is a second input end of the voltage dividing sub-module, and the second end of the third voltage dividing resistor R94 is a first output end of the voltage dividing sub-module.
In this embodiment, the first voltage dividing resistor R92, the second voltage dividing resistor R93, and the third voltage dividing resistor R94 form a voltage dividing submodule 404 for dividing the input high voltage into low voltage. After the voltage reduced by the voltage reducing chip 401 passes through the first voltage dividing resistor R92, one part of the voltage is output to the direct current reclosing drive through the power output end VDD, and the other part of the voltage is output to the ground through the second voltage dividing resistor R93 and the third voltage dividing resistor R94. At this time, the power input end may be connected to a 20V-100V working voltage, and the high voltage in the 20V-100V range may be converted into a low voltage through the buck chip 401, the first voltage dividing resistor R92, the second voltage dividing resistor R93 and the third voltage dividing resistor R94, and output from the power output end VDD to the dc recloser for power supply. In other embodiments, the resistance of the voltage dividing resistors and the number of the voltage dividing resistors may be set according to the operating voltage range value and the output voltage value to be connected. Therefore, the high voltage is converted into safe and workable low voltage, the requirement that the direct current recloser can be connected with a wider range of working voltage can be met, and stable operation can be kept.
The embodiment provides a direct current reclosing power supply circuit and direct current reclosing, including preventing surge module, preventing reverse connection module, filtering module and step-down module, step-down module includes step-down chip, filtering submodule, regulation submodule and partial pressure submodule, prevents surge module, prevents reverse connection module, filtering module, step-down chip, partial pressure submodule, regulation submodule and the equal electricity of filtering submodule and connects. Therefore, the high working voltage can be reduced to the low working voltage through the voltage reduction chip and the plurality of resistors, so that the direct-current reclosing can be connected with a wide range of working voltage, and different requirements of users are met; the anti-surge module and the anti-reverse connection module can protect a circuit, and the filtering module can avoid interference of other signals.
Example 2
The embodiment provides a direct current reclosing circuit, which comprises the direct current reclosing power circuit described in embodiment 1 and is used for reducing high operating voltage to low operating voltage and realizing connection of a wide range of operating voltage.
The embodiment provides a direct current reclosing, including direct current reclosing circuit, this circuit is including preventing surge module, prevent reverse connection module, filtering module and step-down module, and step-down module includes step-down chip, filtering submodule, regulation submodule and partial pressure submodule, prevents surge module, prevents reverse connection module, filtering module, step-down chip, partial pressure submodule, regulation submodule and the equal electricity of filtering submodule and is connected. Therefore, the high working voltage can be reduced to the low working voltage through the voltage reduction chip and the plurality of resistors, so that the direct-current reclosing can be connected with a wide range of working voltage, and different requirements of users are met; the anti-surge module and the anti-reverse connection module can protect a circuit, and the filtering module can avoid interference of other signals.
Any particular values in all examples shown and described herein are to be construed as merely illustrative and not a limitation, and thus other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
The above examples merely represent a few embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the present utility model. 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 utility model, which are all within the scope of the utility model.
Claims (10)
1. The direct-current reclosing power supply circuit is characterized by comprising an anti-surge module, an anti-reverse connection module, a filtering module and a voltage reduction module, wherein the voltage reduction module comprises a voltage reduction chip, a filtering sub-module, an adjusting sub-module and a voltage division sub-module;
The first output end of the anti-surge module is electrically connected with the first input end of the anti-reverse connection module, the second output end of the anti-surge module is electrically connected with the second input end of the anti-reverse connection module, the first output end of the anti-reverse connection module is electrically connected with the first input end of the filter module, the second output end of the anti-reverse connection module is electrically connected with the second input end of the filter module, the first output end of the filter module is electrically connected with the first input end of the filter sub-module, the second output end of the filter module is grounded, the grounding pin of the voltage reducing chip is electrically connected with the power input pin of the voltage reducing chip, the second output end of the filter sub-module is electrically connected with the capacitor pin of the voltage reducing chip, the power switch output pin of the voltage reducing chip is electrically connected with the second input end of the filter sub-module, the third output end of the filter sub-module, the fourth output end of the filter sub-module is electrically connected with the voltage reducing chip, the fifth output end of the filter sub-module is electrically connected with the first input end of the filter sub-module, the voltage reducing chip is electrically connected with the first output end of the filter sub-module, the first output end of the voltage reducing chip is electrically connected with the power input end of the voltage reducing chip, the output of the filter sub-module is electrically connected with the power input end of the voltage reducing chip is electrically connected with the output end of the filter module, the first output end of the voltage division sub-module is grounded.
2. The dc reclosing power supply circuit according to claim 1, wherein the anti-surge module comprises a first resistor and a varistor;
The first end of the first resistor is electrically connected with the positive electrode of the power input end, the second end of the first resistor is electrically connected with the first end of the piezoresistor, and the second end of the piezoresistor is electrically connected with the negative electrode of the power input end;
the first end of the first resistor is a first input end of the anti-surge module, the second end of the first resistor is a first output end of the anti-surge module, and the second end of the piezoresistor is a second output end of the anti-surge module.
3. The direct current reclosing power supply circuit according to claim 2, wherein the reverse connection preventing module comprises a second resistor, a MOS tube and a voltage stabilizing tube;
The first end of the second resistor is electrically connected with the second end of the first resistor, the second end of the second resistor is electrically connected with the source electrode of the MOS tube, the drain electrode of the MOS tube is electrically connected with the second end of the piezoresistor, the cathode of the voltage stabilizing tube is electrically connected with the source electrode of the MOS tube, and the anode of the voltage stabilizing tube is electrically connected with the grid electrode of the MOS tube;
the first end of the second resistor is the first input end of the anti-reverse connection module and the first output end of the anti-reverse connection module, the drain electrode of the MOS tube is the second input end of the anti-reverse connection module, and the anode electrode of the voltage stabilizing tube is the second output end of the anti-reverse connection module.
4. The dc reclosing power circuit according to claim 3, further comprising a transient diode having a cathode electrically connected to the first end of the second resistor and an anode electrically connected to the anode of the regulator.
5. The dc reclosing power supply circuit according to claim 4, wherein the filter module includes a first capacitor, a second capacitor, and a third capacitor;
The first end of the first capacitor is electrically connected with the cathode of the transient diode, the second end of the first capacitor is electrically connected with the anode of the transient diode, the first end of the second capacitor is electrically connected with the first end of the first capacitor, the second end of the second capacitor is electrically connected with the second end of the first capacitor, the first end of the third capacitor is electrically connected with the first end of the second capacitor, and the second end of the third capacitor is electrically connected with the second end of the second capacitor;
The first end of the first capacitor is the first input end of the filtering module, the second end of the first capacitor is the second input end of the filtering module, the first end of the third capacitor is the first output end of the filtering module, and the first end of the third capacitor is the second output end of the filtering module.
6. The dc reclosing power supply circuit according to claim 5, wherein the filter submodule includes an inductor, a fourth capacitor, a fifth capacitor, a sixth capacitor, and a schottky diode;
The first end of the fourth capacitor is electrically connected with the first end of the third capacitor and the power input pin, the second end of the fourth capacitor is electrically connected with the capacitor pin, the first end of the inductor is electrically connected with the output pin of the power switch, the second end of the inductor is electrically connected with the first end of the fifth capacitor, the first end of the sixth capacitor and the first end of the Schottky diode, and the second end of the fifth capacitor, the second end of the sixth capacitor and the second end of the Schottky diode are all grounded;
the first end of the fourth capacitor is the first input end of the filtering submodule and the first output end of the filtering submodule, the second end of the fourth capacitor is the second output end of the filtering submodule, the first end of the inductor is the second input end of the filtering submodule, the second end of the fifth capacitor is the third output end of the filtering submodule, the second end of the sixth capacitor is the fourth output end of the filtering submodule, the second end of the Schottky diode is the fifth output end of the filtering submodule, and the second end of the inductor is the sixth output end of the filtering submodule.
7. The dc reclosing power circuit according to claim 6, wherein the regulation submodule includes a third resistor and a fourth resistor;
The first end of the third resistor is electrically connected with the current detection positive end pin, the second end of the third resistor is electrically connected with the current detection negative end pin, the first end of the fourth resistor is electrically connected with the first end of the third resistor, the second end of the fourth resistor is electrically connected with the second end of the third resistor, and the first end of the fourth resistor is electrically connected with the second end of the inductor;
The second end of the inductor is a sixth output end of the filtering submodule, the first end of the fourth resistor is a first input end of the adjusting submodule, and the second end of the third resistor is a first output end of the adjusting submodule.
8. The dc reclosing power supply circuit according to claim 7, wherein the filter submodule further includes a seventh capacitor;
The first end of the seventh capacitor is electrically connected with the second end of the fourth resistor, and the second end of the seventh capacitor is electrically connected with the feedback pin;
The first end of the seventh capacitor is a third input end of the filtering sub-module, and the second end of the seventh capacitor is a seventh output end of the filtering sub-module.
9. The dc reclosing power supply circuit according to claim 8, wherein the voltage dividing submodule includes a first voltage dividing resistor, a second voltage dividing resistor, and a third voltage dividing resistor, a first end of the first voltage dividing resistor is electrically connected to a second end of the inductor, a second end of the first voltage dividing resistor is electrically connected to a power output end, a first end of the second voltage dividing resistor is electrically connected to a second end of the first voltage dividing resistor, a second end of the second voltage dividing resistor is electrically connected to a first end of the third voltage dividing resistor, a first end of the third voltage dividing resistor is electrically connected to a second end of the seventh capacitor, and a second end of the third voltage dividing resistor is grounded;
The first end of the first voltage dividing resistor is a first input end of the voltage dividing sub-module, the first end of the third voltage dividing resistor is a second input end of the voltage dividing sub-module, and the second end of the third voltage dividing resistor is a first output end of the voltage dividing sub-module.
10. A dc reclosure comprising a dc reclosure power supply circuit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322600815.0U CN220822612U (en) | 2023-09-22 | 2023-09-22 | DC reclosing power supply circuit and DC reclosing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322600815.0U CN220822612U (en) | 2023-09-22 | 2023-09-22 | DC reclosing power supply circuit and DC reclosing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220822612U true CN220822612U (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322600815.0U Active CN220822612U (en) | 2023-09-22 | 2023-09-22 | DC reclosing power supply circuit and DC reclosing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220822612U (en) |
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2023
- 2023-09-22 CN CN202322600815.0U patent/CN220822612U/en active Active
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