CN111600370A - Direct current supply scheduling circuit of terminal class based on charge-discharge protection of super capacitor - Google Patents
Direct current supply scheduling circuit of terminal class based on charge-discharge protection of super capacitor Download PDFInfo
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- CN111600370A CN111600370A CN201911372805.8A CN201911372805A CN111600370A CN 111600370 A CN111600370 A CN 111600370A CN 201911372805 A CN201911372805 A CN 201911372805A CN 111600370 A CN111600370 A CN 111600370A
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- 239000003990 capacitor Substances 0.000 title claims abstract description 133
- 238000004146 energy storage Methods 0.000 claims description 13
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- 238000004891 communication Methods 0.000 description 5
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- 230000003044 adaptive effect Effects 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
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- 239000004065 semiconductor Substances 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
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- 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
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Abstract
The invention discloses a direct current power supply scheduling circuit based on super capacitor charge-discharge protection for a terminal. The super capacitor voltage-sharing control circuit is used for reducing loss and simultaneously protecting capacitor overvoltage abnormity under the condition that input power of a power supply is limited, and after the super capacitor is fully charged, when the instantaneous heavy current of a load circuit is consumed, the super capacitor is discharged through the BOOST booster circuit to supply power and improve the output instantaneous energy density; when the power supply is powered off, the super capacitor is powered on, and timely reporting of system abnormity alarm is guaranteed. By operating the technical scheme in the power supply, the limited energy consumption is fully and effectively utilized, the influence of heavy load switching on the inrush current input by the power supply is reduced, the charging, discharging and voltage-sharing of the super capacitor are protected, and the power can be supplied in a standby mode, so that the reliability and stability of the power supply are improved.
Description
Technical Field
The invention belongs to the field of power communication, and particularly relates to a direct-current power supply scheduling circuit based on super capacitor charge-discharge protection for terminals.
Background
The super capacitor is an electrochemical element for storing energy through a polarized electrolyte, is a special power supply between the traditional electrolysis and a battery, and has the advantages of high power density, short charging and discharging time, long service life, wide working temperature range and the like. However, the peak current is limited by the internal resistance, the voltage resistance of the small-sized super capacitor is generally 2.5-2.7V, and the service life of the super capacitor is reduced or damaged due to severe charge and discharge or overshoot voltage. Therefore, the traditional circuit charges the super capacitor after voltage reduction, or directly charges through resistance current limiting and directly outputs and discharges, so that the cost of the voltage reduction circuit is increased, and the service life of the super capacitor is also reduced.
In electric power transportation, distribution, power supply network, equipment product is various, and most looped netowrk cabinets, high-voltage control cabinet etc. are all got from the trunk line, reserve a lot of DC power supply output interface for terminal type communication equipment in its control cabinet. The untimely updating of the control equipment contradicts with the real-time property of electric energy information acquisition, so that the small communication equipment with better performance is required to be in real-time communication with a power supply system management station, and the equipment state information and the fault alarm are fed back on line in time. The power supply of the power supply is convenient to get power from the control cabinet, the engineering difficulty and complexity of independently connecting 220VAC mains supply are avoided, and the power of the power supply which is used for getting power and depends on the original reserved interface is limited, so that a power supply scheme capable of scheduling energy storage is needed, the communication is ensured to be normal under the condition that the equipment load is aggravated, and the overload or the current surge of the power supply end can not be caused, so that the performance of the electric equipment product is not influenced.
Disclosure of Invention
In view of the above disadvantages in the prior art, an object of the present invention is to provide a dc power supply scheduling circuit for a terminal class based on super capacitor charge-discharge protection.
A terminal type direct current power supply scheduling circuit based on super capacitor charge-discharge protection comprises a current-limiting protection charging circuit, a super capacitor voltage-sharing circuit, a BOOST booster circuit and a diode anti-reverse circuit which are connected in sequence; the current-limiting protection charging circuit, the super capacitor voltage-sharing circuit and the BOOST booster circuit are sequentially connected; the port of the BOOST circuit is connected with a reverse diode, the direct current input is connected with the reverse diode, and the outputs of the two diodes are connected together to supply power to a system or a load. Under the condition of limited input power, the power supply scheme ensures instantaneous high-power output and can be used for standby power.
In the super capacitor current-limiting protection charging circuit, a filter capacitor C1, a current-limiting resistor R1 and a triode VT1 form a current-limiting circuit, a diode VD1, P-channel MOS transistors VT2 and VT3 and resistors R2 and R3 form a current-limiting feedback control circuit, and a diode VD2, resistors R4 and R5 and a triode VT4 form a starting energy storage control circuit.
The super capacitor voltage equalizing circuit consists of a divider resistor R31, a voltage stabilizing tube VD11, a resistor R11 and a triode VT11 super capacitor C11, wherein R31, VD11, R11, VT11 and R41 form a C11 protection control circuit; a protection control circuit of a super capacitor C12 is composed of R32, VD12, R12, VT12 and R42; a protection control circuit of a super capacitor C13 is composed of R33, VD13, R13, VT13 and R43; a protection control circuit of a super capacitor C14 is composed of R34, VD14, R14, VT14 and R44; a protection control circuit of a super capacitor C15 is composed of R35, VD15, R15, VT15 and R45; a protection control circuit of a super capacitor C16 is composed of R36, VD16, R16, VT16 and R46; a protection control circuit of a super capacitor C17 is composed of R37, VD17, R17, VT17 and R47; a protection control circuit of a super capacitor C18 is composed of R38, VD18, R18, VT18 and R48; and the R39, VD19, R19, VT19 and R49 form a protection control circuit of a super capacitor C19.
The BOOST circuit consists of an input filter circuit, a PWM controller or a BOOST chip, a BOOST circuit formed by the BOOST circuit and an output energy storage filter circuit, wherein the input filter circuit consists of capacitors C21 and C22; the BOOST circuit consists of a PWM controller or a BOOST BOOST chip N1, an MOS tube VT5, an energy storage inductor L1 and a fly-wheel diode VD 3; the output energy storage filter circuit consists of a capacitor C26 and an electrolytic C27, wherein a chip N1 is a PWM controller or a BOOST chip, and a chip integrating a MOS (metal oxide semiconductor) transistor of VT5 inside.
The anti-reverse diode circuit consists of diodes VD5 and VD4, wherein the input of the anti-reverse diode VD5 is connected, the output of the BOOST boosting circuit is connected with an anti-reverse diode VD4, and after the comparison, a high-voltage person outputs a supply system and supplies power to a load.
The invention has the beneficial effects that: the base electrode and the source electrode of the triode are used for starting voltage current-limiting protection to charge the super capacitor, and the voltage regulator tube and the MOS tube are used for controlling the charging circuit to be started, so that the super capacitor charging circuit not only has the function of disconnecting charging under-voltage protection, but also can adjust the current-limiting protection limit value, and improves the charging speed and reliability of the super capacitor. The super capacitor voltage-sharing circuit is connected in series through a plurality of super capacitors, so that the voltage is increased to the voltage value of a direct-current power supply, a voltage reduction circuit is omitted, and the cost is reduced; the super capacitor overvoltage protection control circuit is used for disconnecting the voltage-sharing resistor to reduce loss during normal work, and opening the on-resistor voltage sharing when overvoltage is abnormal, so that overvoltage protection and low loss of the capacitor are realized, the voltage resistance and reliability of the super capacitor are improved, and energy is saved. The Boost circuit that PWM controller or Boost chip were built is passed through in the design, and output voltage is adjustable, and output current is big, and super capacitor energy utilization is high, has also restricted super capacitor bleeder current simultaneously and has avoided harm self, can also export the reliable power supply of constant voltage.
Drawings
FIG. 1 is a block diagram of the circuit configuration of the present invention;
FIG. 2 is a schematic diagram of a charging circuit for current limiting protection according to the present invention;
FIG. 3 is a circuit diagram of the super capacitor voltage-sharing circuit of the present invention;
fig. 4 is a diagram of a Boost circuit according to the present invention.
Detailed Description
The invention will be further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1, the direct current power supply scheduling circuit based on super capacitor charge-discharge protection for a terminal comprises a current-limiting protection charging circuit, a super capacitor voltage-sharing circuit, a BOOST voltage-boosting circuit and a diode anti-reverse circuit which are connected in sequence. When the power is supplied by the limited power supply, the power is normally supplied by directly outputting U1 through an anti-reverse diode VD 5; in the current-limiting protection charging circuit, a resistor is adjusted to set charging current, and charging voltage for starting the super capacitor is set, so that the super capacitor is charged by a power supply; the voltage resistance of the super capacitors is improved by connecting 9 super capacitors in series, an overvoltage protection control circuit is designed to control the start of a parallel voltage-sharing resistor, and the voltage of each super capacitor is ensured to be in a safe working area; when the super capacitor is charged to a certain voltage, the BOOST enable is started to work, the booster circuit starts to work and outputs a constant voltage U2, and the U1 outputs power to a system and a load circuit during normal work because the U2 is smaller than the U1. When the load inrush current or the large current starts the machine to operate, at the moment, due to insufficient power supply of the limited power supply, the voltage of U1 is reduced and is lower than that of U2, at the moment, the energy stored by the super capacitor is released through the BOOST booster circuit, and the U1 and the U2 can automatically output higher voltage, so that reliable power supply to the system load is realized. When the input limited power supply is suddenly powered off, the U1 is sharply reduced, and at the moment, the super capacitor outputs energy to provide the U2 voltage for standby power work, so that the system is ensured to feed back security inspection information such as fault alarm and the like in time. The control strategy is characterized by an adjustable current-limiting energy storage and adaptive energy-dispatching control strategy, wherein the adjustable current-limiting energy storage and adaptive energy-dispatching control strategy consists of a current-limiting protection charging circuit, a super capacitor voltage-sharing circuit, a BOOST circuit and a diode.
As shown IN fig. 2, IN the super capacitor current-limiting charging circuit, a power input DC-IN is connected with an anode of a VD2 diode, a cathode thereof is connected with one end of a voltage dividing resistor R4, the other end of R4 is connected with a base of an NPN type triode VT4 and one end of a voltage dividing resistor R5, the other end of R5 is connected with GND, and an emitter of VT4 is connected with GND. The DC-IN is connected with a current-limiting resistor R1, a filter capacitor C1 and an emitter of a PNP triode VT1, the other end of the C1 is connected with GND, the other end of the resistor R1 is connected with a base of VT1 and a drain of a P-channel MOS tube VT2, a collector of the VT1 is connected with an anode of an anti-reverse diode VD1, a cathode of the VD1 is connected with a grid of the VT2, divider resistors R2 and R3 and a grid of the P-channel MOS tube VT3, the other end of the R3 is connected with a collector of a VT4 triode, the other end of the R2 of the divider resistor is connected with sources of the VT2 and the VT3, and the drain of the VT 36.
As shown IN FIG. 3, the super capacitor voltage-sharing circuit is characterized IN that the design voltage DC-IN is 20V direct current, and the voltage-withstanding capability is improved by connecting 9 super capacitors with the nominal rated voltage of 2.7V IN series. The V _ CAP is an input end after the super capacitors are connected in series and is connected with the anode of the super capacitor C11, the anode of the C11 is connected with a resistor R31 and a voltage-sharing resistor R41, the other end of the R31 is connected with the cathode of a voltage-regulator tube VD11, the anode of the VD11 is connected with one end of a resistor R11 and the base of an NPN triode VT11, the other end of the R11 is connected with the emitter of the VT11 and the cathode of the super capacitor C11, and the other end of the R41 is connected with the collector of the VT 11.
The negative electrode of the C11 is connected with the positive electrode of the C12, the positive electrode of the C12 is connected with the resistor R32 and the voltage-sharing resistor R42, the other end of the R32 is connected with the cathode of the voltage-regulator tube VD12, the anode of the VD12 is connected with one end of the resistor R12 and the base of the NPN type triode VT12, the other end of the R12 is connected with the emitter of the VT12 and the negative electrode of the super capacitor C12, and the other end of the R42 is connected with the collector of the VT 12.
The negative electrode of the C12 is connected with the positive electrode of the C13, the positive electrode of the C13 is connected with the resistor R33 and the voltage-sharing resistor R43, the other end of the R33 is connected with the cathode of the voltage-regulator tube VD13, the anode of the VD13 is connected with one end of the resistor R13 and the base of the NPN type triode VT13, the other end of the R13 is connected with the emitter of the VT13 and the negative electrode of the super capacitor C13, and the other end of the R43 is connected with the collector of the VT 13.
The negative electrode of the C13 is connected with the positive electrode of the C14, the positive electrode of the C14 is connected with the resistor R34 and the voltage-sharing resistor R44, the other end of the R34 is connected with the cathode of the voltage-regulator tube VD14, the anode of the VD14 is connected with one end of the resistor R14 and the base of the NPN type triode VT14, the other end of the R14 is connected with the emitter of the VT14 and the negative electrode of the super capacitor C14, and the other end of the R44 is connected with the collector of the VT 14.
The negative electrode of the C14 is connected with the positive electrode of the C15, the positive electrode of the C15 is connected with the resistor R35 and the voltage-sharing resistor R45, the other end of the R35 is connected with the cathode of the voltage-regulator tube VD15, the anode of the VD15 is connected with one end of the resistor R15 and the base of the NPN type triode VT15, the other end of the R15 is connected with the emitter of the VT15 and the negative electrode of the super capacitor C15, and the other end of the R45 is connected with the collector of the VT 15.
The negative electrode of the C15 is connected with the positive electrode of the C16, the positive electrode of the C16 is connected with the resistor R36 and the voltage-sharing resistor R46, the other end of the R36 is connected with the cathode of the voltage-regulator tube VD16, the anode of the VD16 is connected with one end of the resistor R16 and the base of the NPN type triode VT16, the other end of the R16 is connected with the emitter of the VT16 and the negative electrode of the super capacitor C16, and the other end of the R46 is connected with the collector of the VT 16.
The negative electrode of the C16 is connected with the positive electrode of the C17, the positive electrode of the C17 is connected with the resistor R37 and the voltage-sharing resistor R47, the other end of the R37 is connected with the cathode of the voltage-regulator tube VD17, the anode of the VD17 is connected with one end of the resistor R17 and the base of the NPN type triode VT17, the other end of the R17 is connected with the emitter of the VT17 and the negative electrode of the super capacitor C17, and the other end of the R47 is connected with the collector of the VT 17.
The negative electrode of the C17 is connected with the positive electrode of the C18, the positive electrode of the C18 is connected with the resistor R38 and the voltage-sharing resistor R48, the other end of the R38 is connected with the cathode of the voltage-regulator tube VD18, the anode of the VD18 is connected with one end of the resistor R18 and the base of the NPN type triode VT18, the other end of the R18 is connected with the emitter of the VT18 and the negative electrode of the super capacitor C18, and the other end of the R48 is connected with the collector of the VT 18.
The negative electrode of the C18 is connected with the positive electrode of the C19, the positive electrode of the C19 is connected with the resistor R39 and the voltage-sharing resistor R49, the other end of the R39 is connected with the cathode of the voltage-regulator tube VD19, the anode of the VD19 is connected with one end of the resistor R19 and the base of the NPN type triode VT19, the other end of the R19 is connected with the emitter of the VT19 and the negative electrode of the super capacitor C19, and the other end of the R49 is connected with the collector of the VT 19.
As shown in FIG. 4, the port V _ CAP of the BOOST circuit and the super capacitor are respectively connected with one ends of the filter capacitors C21 and C22, and the other ends of C21 and C22 are connected with GND. The super capacitor port V _ CAP is connected with one end of an energy storage inductor L1, the other end of the L1 is connected with the anode of a freewheeling diode VD3 and the drain of an N-channel MOS tube VT5, the cathode of the diode VD3 is connected with the positive end of an electrolytic capacitor C27 and one end of a capacitor C26, the source of the MOS tube is connected with GND, and the gate of the MOS tube is connected with a PWM controller or a BOOST boosting chip. The other end of the filter capacitor C26 is connected with GND, and the negative end of the electrolytic capacitor C27 is connected with GND. The anode of the electrolysis C27 is connected with the anode of the anti-reverse diode VD4, the power input DC-IN is connected with the anode of the anti-reverse diode VD5, and the cathodes of the VD4 and the VD5 are connected with the output port DC-OUT for supplying power to the system.
The working process of the invention is as follows:
when the voltage at the two ends of the divider resistor R5 is larger than the be junction voltage of the VT4, the VT4 triode is conducted to control the starting of the charging of the super capacitor. After power supply input passes through R1, VT2 and voltage dividing resistors R2 and R3, the voltage at the two ends of R2 is greater than VT3 starting voltage Ugs of an MOS (metal oxide semiconductor) tube, VT3 is conducted, and current flows through VT3 to V _ CAP to charge the super capacitor; the be junction voltage clamp of the triode VT1 is turned on, and the voltage across the current-limiting resistor R1 is kept at the be junction voltage of VT1, so the current limit value I can be calculated by adjusting the resistance value of R1, and the calculation formula is I ═ Ube/R1.
When the power input DC-IN is powered off, the voltage of the two ends of the R5 is lower than the be junction starting voltage of the VT4 through the diode VD2, the voltage dividing resistors R4 and R5, the collector and the emitter of the VT4 are disconnected, the voltage of the voltage dividing resistor R2 is reduced, the drain and the source of the P MOS transistor VT3 are not conducted, and the P MOS transistor VT3 is disconnected to charge the super capacitor. The invention is characterized in that a P-channel MOS transistor VT2 drain-source parasitic diode and a diode VD1 prevent leakage current of a super capacitor from VT3 from flowing through, and an anti-reverse diode VD2 prevents leakage current from VT3 and VT4 from flowing through.
The series super capacitors are charged through a current-limiting charging circuit, the voltage of a port V _ CAP is gradually increased, each super capacitor is designed into an overvoltage protection circuit, for example, in the protection circuit of the super capacitor C11, when the voltage of the super capacitor exceeds 2.7V, a voltage regulator VD11 is conducted and clamped, the voltage at two ends of R11 reaches the starting voltage of a triode VT11, VT11 is conducted, and the voltage R41 is connected in parallel with two ends of C11 for voltage sharing and shunting, so that overvoltage damage of the capacitor is avoided; when the voltage-stabilizing tube VD11 is not conducted in normal work, the voltage across the R11 resistor is lower than the starting voltage of VT11, the VT11 is not conducted, and no current flows through the voltage-stabilizing resistor, so that the loss is reduced. By taking this as an example, the super capacitors C12, C13, C14, C15, C16, C17, C18 and C19 are all designed into voltage-sharing control circuits for overvoltage protection.
After the super capacitor is charged, voltage is output through a port V _ CAP, a PWM controller or a boosting chip N1 works to output PWM waves, an N-channel MOS tube VT5 is controlled to be switched on and off, energy is stored in an inductor L1 and is output through a freewheeling diode VD3, filtering is carried out through C23 and C24 capacitors, and the voltage is stably output to U2 through an anti-reverse diode VD 4.
When the load works normally, the voltage U1 of the DC-IN passing through the diode VD5 is more than U2, and the DC-IN directly supplies power to the system; when the system works under a large load or IN an inrush current, the power of the DC-IN power supply is limited, namely U1 is reduced, at the moment, U2 is more than U1, and the super capacitor is boosted and supplied with power through BOOST; when the DC-IN is powered off, U1 is 0, the super capacitor current limiting circuit controls to cut off charging, and the super capacitor discharges through the booster circuit until discharging is completed.
In summary, the invention mainly adopts the following technologies and measures to solve the problems of small transient current, uncontrollable charging and discharging current of the super capacitor and low energy release utilization rate of the traditional current-limiting power supply.
1. According to the working characteristics of the super capacitor, the adjustable charging current-limiting circuit built by the triode, the MOS and the resistance-capacitance device is designed, the charging current size and the charging speed of the super capacitor are adjusted by setting the current limit value, so that the super capacitor can be charged with large current in a safe state, the super capacitor can be prevented from being damaged by charging overcurrent, the charging problem of the super capacitor is solved, and the service life of the capacitor is prolonged.
2. By adopting the design of a series voltage-sharing circuit of 9 2.7V super capacitors, the problems of insufficient voltage resistance of a single super capacitor and multi-capacitor voltage sharing are solved; by designing an overvoltage protection control circuit for each super capacitor, the on-state voltage-sharing resistor is started to balance the voltage division of the super capacitor, the voltage of the capacitor is limited to be protected, the voltage-sharing resistor is disconnected during normal work, and energy conservation and consumption reduction are realized.
3. According to the super capacitor energy storage and the BOOST boosting and energy releasing scheme, the voltage of the super capacitor still working is reduced, the energy releasing energy is greatly limited, the capacitor can be controlled to stop discharging, the constant voltage is stably output, the energy releasing current of the super capacitor can be limited, and the energy utilization rate and the reliability of the super capacitor are improved.
4. The charging and discharging control scheme of the super capacitor not only realizes convenient control and strong operability, meets the requirement of long-time heavy current load discharge or transient inrush current of a system or a load, but also has the function of standby power, and greatly improves the power supply reliability of the system.
The present invention is not limited to the above embodiments, and is not limited to the scope of the invention, and all equivalent structures or equivalent flow transformations which are made by the present specification and the attached drawings, or directly or indirectly applied to other related technical fields are included in the scope of the invention.
Claims (6)
1. A terminal type direct current power supply scheduling circuit based on super capacitor charge-discharge protection is characterized by comprising a current-limiting protection charging circuit, a super capacitor voltage-sharing circuit, a BOOST booster circuit and a diode anti-reverse circuit which are sequentially connected; the current-limiting protection charging circuit, the super capacitor voltage-sharing circuit and the BOOST booster circuit are sequentially connected; the port of the BOOST circuit is connected with an anti-reverse diode, the direct current input is connected with the anti-reverse diode, the outputs of the two diodes are connected together to supply power to a system or a load, and a power supply scheme which meets the requirement of instantaneous high-power output and can be used for standby power is provided under the condition that the input power is limited.
2. The terminal class direct current power supply scheduling circuit based on super capacitor charge-discharge protection of claim 1, wherein in the super capacitor current-limiting protection charging circuit, the filter capacitor C1, the current-limiting resistor R1 and the transistor VT1 constitute a current-limiting circuit, the diode VD1, the P-channel MOS transistor VT2 and VT3, the resistor R2 and R3 constitute a current-limiting feedback control circuit, and the diode VD2, the resistor R4 and R5 and the transistor VT4 constitute a turn-on energy-storage control circuit.
3. The direct current power supply scheduling circuit of a terminal class based on super capacitor charge-discharge protection of claim 1, characterized in that, the super capacitor voltage-sharing circuit is composed of a divider resistor R31, a voltage regulator VD11, a resistor R11, a triode VT11 and a super capacitor C11, wherein R31, VD11, R11, VT11 and R41 constitute a protection control circuit of C11; a protection control circuit of a super capacitor C12 is composed of R32, VD12, R12, VT12 and R42; a protection control circuit of a super capacitor C13 is composed of R33, VD13, R13, VT13 and R43; a protection control circuit of a super capacitor C14 is composed of R34, VD14, R14, VT14 and R44; a protection control circuit of a super capacitor C15 is composed of R35, VD15, R15, VT15 and R45; a protection control circuit of a super capacitor C16 is composed of R36, VD16, R16, VT16 and R46; a protection control circuit of a super capacitor C17 is composed of R37, VD17, R17, VT17 and R47; a protection control circuit of a super capacitor C18 is composed of R38, VD18, R18, VT18 and R48; and the R39, VD19, R19, VT19 and R49 form a protection control circuit of a super capacitor C19.
4. The direct current power supply scheduling circuit of a terminal class based on super capacitor charge-discharge protection of claim 1, wherein the BOOST voltage circuit is composed of an input filter circuit, a PWM controller or a BOOST chip, and a BOOST circuit and an output energy storage filter circuit composed of the same, wherein the input filter circuit is composed of capacitors C21 and C22; the BOOST circuit consists of a PWM controller or a BOOST BOOST chip N1, an N-channel MOS tube VT5, an energy storage inductor L1 and a fly-wheel diode VD 3; the output energy storage filter circuit consists of a capacitor C26 and an electrolytic C27; wherein N1 comprises a chip integrating the MOS tube of VT5 inside.
5. The terminal class DC power supply scheduling circuit based on super capacitor charge-discharge protection as claimed in claim 1, characterized in that the diode anti-reverse circuit is composed of diodes VD5 and VD4, wherein the power input is connected with anti-reverse diode VD5, the BOOST BOOST circuit output is connected with anti-reverse diode VD4, and the output of the diode is compared with the output of the load to supply power to the system and the load.
6. The terminal class DC power supply scheduling circuit based on super capacitor charge-discharge protection as claimed in claim 1, wherein the chip N1 is a PWM controller or a BOOST BOOST chip, and a chip integrating a VT5 MOS transistor therein.
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| CN201911372805.8A CN111600370A (en) | 2019-12-27 | 2019-12-27 | Direct current supply scheduling circuit of terminal class based on charge-discharge protection of super capacitor |
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| CN201911372805.8A CN111600370A (en) | 2019-12-27 | 2019-12-27 | Direct current supply scheduling circuit of terminal class based on charge-discharge protection of super capacitor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112583074A (en) * | 2020-12-11 | 2021-03-30 | 南方电网科学研究院有限责任公司 | Charging and discharging circuit of super capacitor |
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