CN211508690U - Direct current supply circuit and charging pile system - Google Patents
Direct current supply circuit and charging pile system Download PDFInfo
- Publication number
- CN211508690U CN211508690U CN201922500803.4U CN201922500803U CN211508690U CN 211508690 U CN211508690 U CN 211508690U CN 201922500803 U CN201922500803 U CN 201922500803U CN 211508690 U CN211508690 U CN 211508690U
- Authority
- CN
- China
- Prior art keywords
- circuit
- capacitor
- terminal
- input
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000006243 chemical reaction Methods 0.000 claims abstract description 100
- 238000004146 energy storage Methods 0.000 claims abstract description 48
- 239000003990 capacitor Substances 0.000 claims description 73
- 230000002457 bidirectional effect Effects 0.000 claims description 48
- 238000002955 isolation Methods 0.000 claims description 48
- 238000004804 winding Methods 0.000 claims description 12
- 238000010586 diagram Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
The utility model provides a direct current supply circuit and fill electric pile system, wherein, direct current supply circuit is through adding two-way electric energy conversion circuit and at least one photovoltaic input port, thereby accessible alternating current and at least one photovoltaic power supply are as input power, and energy storage circuit has been added, thereby realized when certain input power supply disconnection, direct current supply circuit can be by supplying power for each load through other input power supply or energy storage circuit, and through adding two at least voltage conversion circuit, thereby realized can supplying power for the same or different load of a plurality of operating voltage, foretell direct current supply circuit has solved the problem that the power input that exists among the traditional technical scheme is single, the easy interrupt power supply and can't satisfy the power supply demand of the different load of a plurality of operating voltage simultaneously.
Description
Technical Field
The utility model belongs to the technical field of the power supply, especially, relate to a direct current supply circuit and fill electric pile system.
Background
At present, a traditional direct current power supply circuit generally has only one power input interface and one output end, but the power input of the mode is single, the whole circuit cannot continuously supply power to a load when the input power fails, and the power supply requirements of a plurality of loads with different working voltages cannot be met simultaneously.
Therefore, the traditional technical scheme has the problems of single power input, easy power interruption and incapability of simultaneously meeting the power supply requirements of a plurality of loads with different working voltages.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a direct current supply circuit and fill electric pile system aims at solving the problem that the power input that exists is single, the power supply is easily interrupted and can't satisfy the power supply demand of the different load of a plurality of operating voltage simultaneously among the traditional technical scheme.
The utility model provides a first aspect of the embodiment provides a direct current supply circuit, include:
a bidirectional electric energy conversion circuit, an alternating current end of which is connected with an alternating current, the bidirectional electric energy conversion circuit being capable of converting the alternating current into a direct current and converting the direct current into the alternating current;
the input end of each voltage conversion circuit is connected with the direct current end of the bidirectional electric energy conversion circuit, the output end of each voltage conversion circuit is externally connected with each load, and each voltage conversion circuit can convert the direct current into a corresponding target direct current;
the energy storage circuit is connected with the direct current end of the bidirectional electric energy conversion circuit and the input end of the voltage conversion circuit, and can provide and store the direct current and output the direct current to the voltage conversion circuit and the bidirectional electric energy conversion circuit; and
the input end of each photovoltaic input port is externally connected with a photovoltaic power supply, and the output end of each photovoltaic input port is commonly connected with the input ends of the energy storage circuit and the voltage conversion circuit.
In one embodiment, the bidirectional power conversion circuit comprises a bidirectional AC-DC conversion chip and a first driver, wherein an AC input/output end of the bidirectional AC-DC conversion chip is used as an AC end of the bidirectional power conversion circuit, a DC input/output end of the bidirectional AC-DC conversion chip is used as a DC end of the bidirectional power conversion circuit, and a control end of the bidirectional AC-DC conversion chip is connected with an output end of the first driver.
In one embodiment, the voltage conversion circuit includes a second driver, a first switch tube, a first inductor, a first diode, and a first capacitor, an input end of the first switch tube is used as an input end of the voltage conversion circuit, an output end of the first switch tube is used as a first end of the first inductor and connected with a negative electrode of the first diode, a second end of the first inductor and a first end of the first capacitor are connected in common to serve as an output end of the voltage conversion circuit, and a second end of the first capacitor and a positive electrode of the first diode are connected in common.
In one embodiment, the energy storage circuit comprises an energy storage battery pack.
In one embodiment, the energy storage voltage of the energy storage battery pack is 500V-700V.
In one embodiment, the photovoltaic input port comprises: the photovoltaic power supply comprises a connecting interface, a maximum power point tracking controller and a second diode, wherein the connecting interface is used for being externally connected with the photovoltaic power supply, the connecting interface is connected with the input end of the maximum power point tracking controller, the output end of the maximum power point tracking controller is connected with the anode of the second diode, and the cathode of the second diode is used as the output end of the photovoltaic input port.
In one embodiment, the dc power supply circuit further includes an isolation circuit, an input end of the isolation circuit is connected to an output end of each of the photovoltaic input ports, an output end of the isolation circuit is connected to the energy storage circuit and an input end of each of the voltage conversion circuits, and the isolation circuit is configured to isolate and output the photovoltaic power accessed by each of the photovoltaic input ports to the energy storage circuit and each of the voltage conversion circuits.
In one embodiment, the isolation circuit includes a third driver, a second switch tube, a third switch tube, a fourth switch tube, a fifth switch tube, a third diode, a fourth diode, a fifth diode, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a second inductor, a third inductor, and an isolation transformer, a first end of the second capacitor, an input end of the second switch tube, a first end of the third capacitor, and a cathode of the third diode are connected in common to form an anode of the input end of the isolation circuit, a second end of the second capacitor, an output end of the third switch tube, a second end of the fourth capacitor, and an anode of the fourth diode are connected in common to form a cathode of the input end of the isolation circuit, an output end of the second switch tube and a first end of the second inductor are connected to an input end of the third switch tube, the second end of the second inductor is connected with the first end of the primary winding of the isolation transformer, the second end of the third capacitor, the anode of the third diode, the first end of the fourth capacitor, the cathode of the fourth diode and the second end of the primary winding of the isolation transformer are connected together, the first end of the secondary winding of the isolation transformer and the output end of the fourth switching tube are connected with the input end of the fifth switching tube, the input end of the fourth switching tube, the first end of the fifth capacitor, the first end of the seventh capacitor and the first end of the third inductor are connected, the second end of the secondary winding of the isolation transformer and the second end of the fifth capacitor and the first end of the sixth capacitor are connected, and the second end of the third inductor and the first end of the eighth capacitor are connected together to be used as the anode of the output end of the isolation circuit, the output end of the fifth switch tube, the second end of the sixth capacitor, the second end of the seventh capacitor and the second end of the eighth capacitor are connected with the negative electrode of the output end of the isolation circuit, and the control end of the second switch tube, the control end of the third switch tube, the control end of the fourth switch tube and the control end of the fifth switch tube are connected with the third driver.
In one embodiment, the dc power supply circuit further includes a first switch, a first end of the first switch is connected to the energy storage circuit, a second end of the first switch is connected to each of the photovoltaic input ports and the input end of each of the voltage conversion circuits, and the first switch is capable of closing or opening the connection between the energy storage circuit and the photovoltaic power source and the connection between the energy storage circuit and each of the voltage conversion circuits.
The utility model provides a second aspect of the embodiment provides a fill electric pile system, include:
at least two charging piles; and
if the utility model discloses the first aspect direct current supply circuit, direct current supply circuit is used for each fill electric pile power supply.
According to the direct-current power supply circuit, the bidirectional electric energy conversion circuit and the at least one photovoltaic input port are added, so that alternating current and the at least one photovoltaic power supply can be accessed as input power supplies, the energy storage circuit is added, when one input power supply is disconnected, the direct-current power supply circuit can supply power to each load through the other input power supply or the energy storage circuit, and the direct-current power supply circuit can supply power to a plurality of loads with the same or different working voltages by adding the at least two voltage conversion circuits, namely the direct-current power supply circuit solves the problems that the power supply input is single, the power supply is easy to interrupt, and the power supply requirements of the loads with different working voltages cannot be met simultaneously in the traditional technical scheme.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic circuit diagram of a dc power supply circuit according to an embodiment of the present invention;
FIG. 2 is an exemplary circuit schematic of a first voltage conversion circuit in the DC power supply circuit shown in FIG. 1;
FIG. 3 is an exemplary circuit schematic of a first photovoltaic input port of the DC power supply circuit shown in FIG. 1;
FIG. 4 is a circuit diagram of the DC power supply circuit shown in FIG. 1 further including an isolation circuit;
FIG. 5 is an exemplary circuit schematic for the isolation circuit of the DC power supply circuit shown in FIG. 4;
FIG. 6 is a schematic circuit diagram of the DC power supply circuit shown in FIG. 1 when the DC power supply circuit further includes a first switch;
fig. 7 is a schematic circuit diagram of a charging pile system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a circuit diagram of a dc power supply circuit according to a first aspect of the embodiment of the present invention is shown, for convenience of description, only the relevant portions of the embodiment are shown, and the detailed description is as follows:
the dc power supply circuit in this embodiment includes: the bidirectional electric energy conversion circuit comprises a bidirectional electric energy conversion circuit 100, at least two voltage conversion circuits, an energy storage circuit 300 and at least one photovoltaic input port, wherein alternating current is connected to the alternating current end of the bidirectional electric energy conversion circuit 100, the input end of each voltage conversion circuit is connected with the direct current end of the bidirectional electric energy conversion circuit 100, the output end of each voltage conversion circuit is externally connected with each load, the direct current ends of the energy storage circuit 300 and the bidirectional electric energy conversion circuit 100 are connected with the input end of the voltage conversion circuit, the input end of each photovoltaic input port is respectively externally connected with a photovoltaic power supply, and the output end of each photovoltaic input port is commonly connected to the energy storage circuit 300; the bidirectional power conversion circuit 100 is capable of converting alternating current to direct current and direct current to alternating current; each voltage conversion circuit can convert the direct current into a corresponding target direct current; the tank circuit 300 is capable of providing stored dc power and outputting dc power to the voltage conversion circuit and the bidirectional power conversion circuit 100.
It should be understood that the first voltage converting circuit 210, the second voltage converting circuit 220, and the third voltage converting circuit 230 are illustrated in fig. 1, and in other embodiments, two or more voltage converting circuits may be included; the first photovoltaic input port and the second photovoltaic input port are illustrated in fig. 1, and in other embodiments, one or two or more photovoltaic input ports may be included. The connection relationship of the dc power supply circuit in fig. 1 is: alternating current is input into an alternating current end of the bidirectional electric energy conversion circuit 100, a direct current end of the alternating current end of the bidirectional electric energy conversion circuit 100 is connected with an input end of the first voltage conversion circuit 210, an input end of the second voltage conversion circuit 220, an input end of the third voltage conversion circuit 230, the energy storage circuit 300, an output end of the first photovoltaic input port 410 and an output end of the second photovoltaic input port 420, an output end of the first voltage conversion circuit 210 is connected with the first load 11, an output end of the second voltage conversion circuit 220 is connected with the second load 12, an output end of the third voltage conversion circuit 230 is connected with the third load 13, an input end of the first photovoltaic input port is connected with the first photovoltaic power supply 21, and an input end of the second photovoltaic input port is connected with the second photovoltaic power supply 22.
It should be understood that the bidirectional power conversion circuit 100 may be constituted by a bidirectional AC-DC conversion chip; the voltage conversion circuit 300 may be constituted by a DC-DC conversion chip; the energy storage circuit 300 may be formed by an energy storage device, such as a capacitor or a battery.
It should be understood that the accessed ac power may be provided by an external ac power source, or directly accessed to the mains; the voltage of the direct current output by the bidirectional power conversion circuit 100 should not exceed the energy storage voltage of the energy storage circuit 300; for example, the first voltage conversion circuit 210 outputs a first target direct current, the second voltage conversion circuit 220 outputs a second target direct current, and the third voltage conversion circuit 230 outputs a third target direct current, so that the first target direct current is the electric energy required by the first load 11, the second target direct current is the electric energy required by the second load 12, and the third target direct current is the electric energy required by the third load 13, and the voltage and current electrical parameters of the first target direct current, the second target direct current, and the third target direct current may be the same or different.
The dc power supply circuit in this embodiment, by adding the bidirectional power conversion circuit 100 and the at least one photovoltaic input port, ac power and the at least one photovoltaic power can be accessed as input power, and the energy storage circuit 300 is added, so that when a certain input power is disconnected, the dc power supply circuit can supply power to each load through another input power or energy storage circuit, and by adding the at least two voltage conversion circuits, power can be supplied to a plurality of loads with the same or different operating voltages, that is, the above dc power supply circuit solves the problems of single power input, easy power interruption, and incapability of meeting the power supply requirements of a plurality of loads with different operating voltages in the conventional technical scheme.
In one embodiment, the bidirectional power conversion circuit 100 includes a bidirectional AC-DC conversion chip and a first driver, an AC input/output terminal of the bidirectional AC-DC conversion chip is used as an AC terminal of the bidirectional power conversion circuit 100, a DC input/output terminal of the bidirectional AC-DC conversion chip is used as a DC terminal of the bidirectional power conversion circuit 100, and a control terminal of the bidirectional AC-DC conversion chip is connected to an output terminal of the first driver.
It should be understood that the first driver may be formed by a chip or an integrated circuit capable of outputting PWM (Pulse Width Modulation), such as a microprocessor, for example, a single chip; the model of the bidirectional AC-DC conversion chip in this embodiment is DC200DC1KP50K, and in other embodiments, other models of bidirectional AC-DC conversion chips may also be used.
Referring to fig. 2, in an embodiment, the voltage converting circuit includes a second driver 211, a first switch Q1, a first inductor L1, a first diode D1, and a first capacitor C1, an input terminal of the first switch Q1 is used as an input terminal of the voltage converting circuit, an output terminal of the first switch Q1 is used as a first terminal of a first inductor L1 and a negative terminal of the first diode D1, a second terminal of the first inductor L1 and a first terminal of the first capacitor C1 are connected in common to serve as an output terminal of the voltage converting circuit, and a second terminal of the first capacitor C1 and a positive terminal of the first diode D1 are connected in common.
It should be understood that the first driver may be formed by a chip or an integrated circuit capable of outputting PWM (Pulse Width Modulation), such as a microprocessor, for example, a single chip; in this embodiment, the first switch transistor Q1 is a PMOS transistor, the control terminal of the first switch transistor Q1 is a gate of the PMOS transistor, the input terminal of the first switch transistor Q1 is a drain of the PMOS transistor, and the output terminal of the first switch transistor Q1 is a source of the PMOS transistor, in other embodiments, the first switch transistor Q1 may also be formed by other types of switch transistors, such as an NMOS transistor, a triode, and the like.
In one embodiment, the energy storage circuit 300 includes an energy storage battery pack. It should be understood that the energy storage battery pack may include at least one energy storage battery, or include two or more energy storage batteries, and each energy storage battery may be connected in series or in parallel to form the energy storage battery pack.
Optionally, the energy storage voltage of the energy storage battery pack is 500V-700V.
Referring to fig. 3, in an embodiment, taking the first photovoltaic input port 410 as an example, the first photovoltaic input port 410 includes: the photovoltaic power supply system comprises a connection interface 411, a maximum power point tracking controller 412 and a second diode D2, wherein the connection interface 411 is used for being externally connected with a photovoltaic power supply, the connection interface 411 is connected with the input end of the maximum power point tracking controller 412, the output end of the maximum power point tracking controller 412 is connected with the anode of a second diode D2, and the cathode of the second diode D2 is used as the output end of a photovoltaic input port.
It should be understood that the connection interface 411 may be a power interface, a USB interface, or the like; the other photovoltaic input port may be composed with reference to the first photovoltaic input port 410.
Referring to fig. 4, in an embodiment, the dc power supply circuit further includes an isolation circuit 500, an input end of the isolation circuit 500 is connected to an output end of the first photovoltaic input port 410 and an output end of the first second photovoltaic input port, an output end of the isolation circuit 500 is connected to the energy storage circuit 300, an input end of the first voltage conversion circuit 210, an input end of the second voltage conversion circuit 220, an input end of the third voltage conversion circuit 230, and a dc end of the bidirectional power conversion circuit 100, that is, an input end of the isolation circuit 500 is connected to an output end of each photovoltaic input port, and an output end of the isolation circuit 500 is connected to an input end of each voltage conversion circuit and the energy storage circuit 300; the isolation circuit 500 is used for isolating and outputting the photovoltaic power source connected to each photovoltaic input port to the energy storage circuit 300 and each voltage conversion circuit.
Referring to fig. 5, in an embodiment, the isolation circuit 500 includes a third driver 510, a second switch Q2, a third switch Q3, a fourth switch Q4, a fifth switch Q5, a third diode D3, a fourth diode D4, a fifth diode D5, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a second inductor L2, a third inductor L3, and an isolation transformer T3, wherein a first end of the second capacitor C3, an input end of the second switch Q3, a first end of the third capacitor C3, and a negative end of the third diode D3 are connected to an anode of the input end of the isolation circuit 500, a second end of the second capacitor C3, an output end of the third switch Q3, a second end of the fourth capacitor C3, and a negative end of the fourth diode D3 are connected to the input end of the second switch Q3 and the second input end of the second switch Q3, a second end of the second inductor L2 is connected to a first end of the primary winding of the isolation transformer T1, a second end of the third capacitor C3, an anode of the third diode D3, a first end of the fourth capacitor C4, a cathode of the fourth diode D4, and a second end of the primary winding of the isolation transformer T1 are connected in common, a first end of the secondary winding of the isolation transformer T1 and an output end of the fourth switch Q4 are connected to an input end of the fifth switch Q5, an input end of the fourth switch Q4, a first end of the fifth capacitor C5, a first end of the seventh capacitor C7, and a first end of the third inductor L3 are connected, a second end of the secondary winding of the isolation transformer T1 and a second end of the fifth capacitor C5 are connected to a first end of the sixth capacitor C6, a second end of the third inductor L3 and a first end of the eighth capacitor C8 are connected in common as an anode of the output end of the isolation circuit 500, and a second end of the fifth switch Q5 and a second end of the sixth capacitor Q6 are connected to a second end of the output, The second terminal of the seventh capacitor C7 and the second terminal of the eighth capacitor C8 are commonly connected to a negative electrode of the output terminal of the isolation circuit 500, and the control terminal of the second switch transistor Q2, the control terminal of the third switch transistor Q3, the control terminal of the fourth switch transistor Q4 and the control terminal of the fifth switch transistor Q5 are commonly connected to the third driver 510.
It should be understood that when the ports of the circuits are connected, such as when the ports are divided into positive and negative, the positive and negative terminals of the ports are connected, e.g., the input terminal of the isolation circuit 500 is connected to the tank circuit 300, the positive terminal of the input terminal of the isolation circuit 500 is connected to the positive terminal of the tank circuit 300, and the negative terminal of the dc terminal of the input terminal of the isolation circuit 500 is connected to the negative terminal of the tank circuit 300.
It should be understood that the third driver 510 may be formed by a chip or an integrated circuit capable of outputting PWM (Pulse Width Modulation), such as a microprocessor, for example, a single chip; the second switch tube Q2, the third switch tube Q3, the fourth switch tube Q4 and the fifth switch tube Q5 are PMOS tubes, and in other embodiments, the second switch tube Q2, the third switch tube Q3, the fourth switch tube Q4 and the fifth switch tube Q5 may be formed by other types of switch tubes, such as NMOS tubes, triodes and the like.
Referring to fig. 6, in an embodiment, the photovoltaic power supply further includes a first switch K1, a first terminal of the first switch K1 is connected to the energy storage circuit 300, a second terminal of the first switch K1 is connected to each of the photovoltaic input ports and the input terminal of each of the voltage conversion circuits, and the first switch K1 is capable of closing or opening the connection between the energy storage circuit 300 and the photovoltaic power supply and the connection between the energy storage circuit 300 and each of the voltage conversion circuits. It should be understood that the first switch K1 may be a mechanical switch or an electronic switch.
It should be understood that the first driver, the second driver 211 and the third driver 510 in the embodiment of the present invention may be the same driver or different drivers.
Referring to fig. 7, a second aspect of the embodiments of the present invention provides a charging pile system, including: at least two charging piles; and a dc supply circuit as described in the first aspect of the embodiments of the present invention; the direct current power supply circuit is used for supplying power to each charging pile.
Fig. 7 illustrates the first charging pile 31, the second charging pile 32, and the third charging pile 33, and in other embodiments, two or more charging piles may be included. It should be understood that each of charging piles in this embodiment is connected with direct current supply circuit, can refer to the utility model discloses each load of the first aspect of embodiment is connected with direct current supply circuit, and each voltage of charging the electric pile in this embodiment can be unanimous also can be inconsistent.
The charging pile system in the embodiment is characterized in that the charging pile system is provided with a plurality of charging piles, and the charging piles are connected with the plurality of charging piles through a direct current power supply circuit.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A dc power supply circuit, comprising:
a bidirectional electric energy conversion circuit, an alternating current end of which is connected with an alternating current, the bidirectional electric energy conversion circuit being capable of converting the alternating current into a direct current and converting the direct current into the alternating current;
the input end of each voltage conversion circuit is connected with the direct current end of the bidirectional electric energy conversion circuit, the output end of each voltage conversion circuit is externally connected with each load, and each voltage conversion circuit can convert the direct current into a corresponding target direct current;
the energy storage circuit is connected with the direct current end of the bidirectional electric energy conversion circuit and the input end of the voltage conversion circuit, and can provide and store the direct current and output the direct current to the voltage conversion circuit and the bidirectional electric energy conversion circuit; and
the input end of each photovoltaic input port is externally connected with a photovoltaic power supply, and the output end of each photovoltaic input port is commonly connected with the input ends of the energy storage circuit and the voltage conversion circuit.
2. The DC power supply circuit of claim 1, wherein the bidirectional power conversion circuit comprises a bidirectional AC-DC conversion chip and a first driver, the AC input/output terminal of the bidirectional AC-DC conversion chip is used as the AC terminal of the bidirectional power conversion circuit, the DC input/output terminal of the bidirectional AC-DC conversion chip is used as the DC terminal of the bidirectional power conversion circuit, and the control terminal of the bidirectional AC-DC conversion chip is connected to the output terminal of the first driver.
3. The dc power supply circuit of claim 1, wherein the voltage converting circuit comprises a second driver, a first switch tube, a first inductor, a first diode, and a first capacitor, an input terminal of the first switch tube is used as an input terminal of the voltage converting circuit, an output terminal of the first switch tube is connected to a negative terminal of the first diode as a first terminal of the first inductor, a second terminal of the first inductor and a first terminal of the first capacitor are connected in common to serve as an output terminal of the voltage converting circuit, and a second terminal of the first capacitor is connected in common to a positive terminal of the first diode.
4. The dc power supply circuit of claim 1, wherein the energy storage circuit comprises an energy storage battery pack.
5. The DC power supply circuit of claim 4, wherein the energy storage voltage of the energy storage battery pack is 500V-700V.
6. The dc power supply circuit of claim 1, wherein the photovoltaic input port comprises: the photovoltaic power supply comprises a connecting interface, a maximum power point tracking controller and a second diode, wherein the connecting interface is used for being externally connected with the photovoltaic power supply, the connecting interface is connected with the input end of the maximum power point tracking controller, the output end of the maximum power point tracking controller is connected with the anode of the second diode, and the cathode of the second diode is used as the output end of the photovoltaic input port.
7. The direct-current power supply circuit as claimed in any one of claims 1 to 6, further comprising an isolation circuit, wherein an input end of the isolation circuit is connected to an output end of each of the photovoltaic input ports, an output end of the isolation circuit is connected to the energy storage circuit and an input end of each of the voltage conversion circuits, and the isolation circuit is configured to isolate the photovoltaic power supply accessed by each of the photovoltaic input ports and output the isolated photovoltaic power supply to the energy storage circuit and each of the voltage conversion circuits.
8. The DC power supply circuit of claim 7, wherein the isolation circuit comprises a third driver, a second switch tube, a third switch tube, a fourth switch tube, a fifth switch tube, a third diode, a fourth diode, a fifth diode, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a second inductor, a third inductor, and an isolation transformer, wherein a first terminal of the second capacitor, an input terminal of the second switch tube, a first terminal of the third capacitor, and a negative terminal of the third diode are connected in common to serve as a positive terminal of the input terminal of the isolation circuit, a second terminal of the second capacitor, an output terminal of the third switch tube, a second terminal of the fourth capacitor, and a positive terminal of the fourth diode are connected in common to serve as a negative terminal of the input terminal of the isolation circuit, the output end of the second switch tube is connected with the first end of the second inductor and the input end of the third switch tube, the second end of the second inductor is connected with the first end of the primary winding of the isolation transformer, the second end of the third capacitor, the anode of the third diode, the first end of the fourth capacitor, the cathode of the fourth diode and the second end of the primary winding of the isolation transformer are connected in common, the first end of the secondary winding of the isolation transformer and the output end of the fourth switch tube are connected with the input end of the fifth switch tube, the input end of the fourth switch tube, the first end of the fifth capacitor, the first end of the seventh capacitor and the first end of the third inductor are connected, the second end of the secondary winding of the isolation transformer and the second end of the fifth capacitor are connected with the first end of the sixth capacitor, the second end of the third inductor and the first end of the eighth capacitor are connected in common to serve as the anode of the output end of the isolation circuit, the output end of the fifth switch tube, the second end of the sixth capacitor, the second end of the seventh capacitor and the second end of the eighth capacitor are connected in common to serve as the cathode of the output end of the isolation circuit, and the control end of the second switch tube, the control end of the third switch tube, the control end of the fourth switch tube and the control end of the fifth switch tube are connected in common to the third driver.
9. The dc power supply circuit of claim 1, further comprising a first switch, a first terminal of the first switch being connected to the tank circuit, a second terminal of the first switch being connected to each of the photovoltaic input ports and to an input terminal of each of the voltage conversion circuits, the first switch being capable of closing or opening the tank circuit to the photovoltaic power source and the tank circuit to each of the voltage conversion circuits.
10. A charging pile system, comprising:
at least two charging piles; and
the dc supply circuit of any one of claims 1 to 9, configured to supply power to each charging post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922500803.4U CN211508690U (en) | 2019-12-31 | 2019-12-31 | Direct current supply circuit and charging pile system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922500803.4U CN211508690U (en) | 2019-12-31 | 2019-12-31 | Direct current supply circuit and charging pile system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211508690U true CN211508690U (en) | 2020-09-15 |
Family
ID=72398150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922500803.4U Active CN211508690U (en) | 2019-12-31 | 2019-12-31 | Direct current supply circuit and charging pile system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211508690U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115714448A (en) * | 2023-01-09 | 2023-02-24 | 广州疆海科技有限公司 | Charging device and charging control method |
-
2019
- 2019-12-31 CN CN201922500803.4U patent/CN211508690U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115714448A (en) * | 2023-01-09 | 2023-02-24 | 广州疆海科技有限公司 | Charging device and charging control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102959846B (en) | Dc-dc converter | |
| EP3163734A1 (en) | Dc-dc converter with high transformer ratio | |
| US8868249B2 (en) | Hybrid controlling and driving circuit and method thereof | |
| CN105141134A (en) | Switch power supply and method for controlling switch power supply | |
| KR101734210B1 (en) | Bidirectional dc-dc converter | |
| CN104518728A (en) | Motor driving apparatus | |
| CN102570831B (en) | Isolated direct current (DC) bidirectional converter | |
| CN211508690U (en) | Direct current supply circuit and charging pile system | |
| CN202363927U (en) | Intelligent efficient power supply module | |
| CN114465479A (en) | Three-port bidirectional DC/DC converter soft switching circuit and device thereof | |
| CN204068702U (en) | A kind of non-isolation type high-gain DC/DC converter | |
| CN101552558B (en) | Synchronous rectification driving circuit of flyback circuit | |
| CN103458547A (en) | Power source polarity conversion circuit and lamp | |
| CN105896998B (en) | A kind of active full-bridge DC-DC converter of isolation type bidirectional | |
| WO2019109950A1 (en) | Boosting circuit, power supply device and portable electric energy system | |
| CN108808833A (en) | A kind of UPS circuits | |
| CN104104232A (en) | Isolated high-gain DC/DC (Direct Current) converter | |
| CN113131753A (en) | Auxiliary power supply system of bidirectional converter and power utilization system | |
| CN109802572B (en) | Power router and control method thereof | |
| CN202602356U (en) | A power supply switching device with double DC inputs | |
| CN211508934U (en) | Energy storage power supply circuit and energy storage air conditioner | |
| Vasconcelos et al. | High static gain DC-DC converter CUK with current source characteristic for nanogrid application | |
| CN220857665U (en) | Secondary power circuit architecture of bidirectional portable inverter | |
| CN215817927U (en) | Auxiliary power supply system of bidirectional converter and power utilization system | |
| CN102624078A (en) | Power supplying switching method of direct current dual path input and device for implementing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 518000 1903a, block a, Zhongguan Times Square, 4168 Liuxian Avenue, Pingshan community, Taoyuan Street, Nanshan District, Shenzhen, Guangdong Patentee after: REPOWER TECHNOLOGY Co.,Ltd. Address before: 4 / F, No.2 factory building, tongfuyu industrial town, Liuxian Avenue, Nanshan District, Shenzhen City, Guangdong Province Patentee before: REPOWER TECHNOLOGY Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 518000 floor 11, building A3, Nanshan Zhiyuan, No. 1001, Xueyuan Avenue, Changyuan community, Taoyuan Street, Nanshan District, Shenzhen, Guangdong Patentee after: REPOWER TECHNOLOGY Co.,Ltd. Address before: 518000 1903a, block a, Zhongguan Times Square, 4168 Liuxian Avenue, Pingshan community, Taoyuan Street, Nanshan District, Shenzhen, Guangdong Patentee before: REPOWER TECHNOLOGY Co.,Ltd. |