CN213892231U - V2G fills electric pile - Google Patents
V2G fills electric pile Download PDFInfo
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- CN213892231U CN213892231U CN202021862870.7U CN202021862870U CN213892231U CN 213892231 U CN213892231 U CN 213892231U CN 202021862870 U CN202021862870 U CN 202021862870U CN 213892231 U CN213892231 U CN 213892231U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
Abstract
The utility model provides a V2G fills electric pile, including alternating current network, PWM rectifier module, two-way DC module and central control unit, alternating current network and PWM rectifier module electric connection, PWM rectifier module and two-way DC module electric connection, two-way DC module electric connection has car battery, PWM rectifier module is used for carrying out the rectification to alternating current network's side alternating current and is used for providing the electric energy to the user load, voltage after two-way DC module will rise during discharge becomes the alternating current via PWM rectifier module contravariant and gets into alternating current network, the charging process is used for realizing the control to whole system through central control unit. The utility model discloses can realize the two-way flow of energy between alternating current network and the automobile storage battery to the security and the stability of electric wire netting have been increased substantially.
Description
Technical Field
The utility model relates to a fill electric pile technical field, concretely relates to V2G fills electric pile.
Background
With the increasing severity of the problems of energy crisis, environmental pollution and the like, the sustainable development demand of energy is increasingly strong, and the electric automobile technology is generated at the same time and becomes a hot front-edge technology which is researched and developed at present. The continuous development and progress of modern science and technology greatly increase the number of electric automobiles, and more charging piles are used. V2G is a technology for realizing the energy flows between the electric wire netting and electric automobile bidirectionally, when the electric wire netting is in very unstable moment, at this moment the energy can be from electric automobile feedback to the electric wire netting, stability and security performance of the electric wire netting will be improved greatly, V2G technology has expanded the utilization of the new energy, facilitate people to enjoy the advantage brought by electric energy better, promote the human society to develop towards the conservation-minded, environment-friendly society.
The independent charging system is a special charging pile placed on the ground or hung on a wall and the like, and the charging pile is generally arranged in a large-scale charging station, a parking lot and a residential area. The flexibility is poor, and the endurance is not strong; the vehicle-mounted charging system is generally independent in an electric vehicle, and generally has the defects of high cost, large volume, low power and the like; and according to the service time of the user on the electric automobile, the user can know that the electric automobile is idle for most of time at present, so that the energy utilization rate is low, and the stability of a power grid is poor.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims to solve the problem of providing a V2G fills electric pile.
In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a V2G fills electric pile, includes alternating current network, PWM rectifier module, two-way DC/DC module and central control unit, alternating current network with PWM rectifier module electric connection, PWM rectifier module with two-way DC/DC module electric connection, two-way DC/DC module electric connection has car battery, PWM rectifier module is used for right alternating current network's side alternating current is rectified and is used for providing the electric energy for user's load, during the discharge the two-way DC/DC module is with the voltage after the promotion via PWM rectifier module invertion becomes the alternating current and gets into alternating current network, and the charging process passes through central control unit is used for realizing the control to whole system.
The utility model discloses in, preferably, central control unit includes drive module, auxiliary power module and DSP control module, drive module with auxiliary power module electric connection, auxiliary power module with DSP control module electric connection, the soft turn-off signal of drive module output is used for reducing electromagnetic interference, auxiliary power module is used for providing required voltage for each chip.
In the utility model discloses in, preferably, the PWM rectifier module includes triode VT1-VT6, triode VT1-VT6 correspond respectively and have diode VD1-VD6 in parallel.
In the utility model discloses in, preferably, two-way DC/DC module includes power tube VT7 and power tube VT8, power tube VT7 both ends are parallelly connected to have diode VD7, power tube VT8 is parallelly connected to have diode VD8, through power tube VT7 with switching boost state or step-down state are switched in the switching-on or switching-off of power tube VT8, are used for realizing PWM rectifier module with energy exchange between the automobile storage battery.
The utility model discloses in, preferably, the central control unit with electric connection has the sampling module between the PWM rectifier module, the sampling module is used for the voltage signal and the current signal of acquisition circuit and will voltage signal and current signal transmit for the central control unit.
The utility model discloses in, preferably, the sampling module includes voltage sampling circuit and current sampling circuit, voltage sampling circuit with current sampling circuit's structure is the same, voltage sampling circuit includes step-down circuit, operational amplifier and filter circuit, and voltage signal via earlier step-down circuit carries out the signal attenuation then passes through operational amplifier carries out signal amplification, the rethread filter circuit with voltage signal transmission extremely central control unit.
In the utility model discloses in, preferably, the step-down circuit includes resistance R3, resistance R4 and resistance R5, resistance R3 one end with resistance R4 establishes ties, resistance R3's the other end with operational amplifier's forward input end links to each other, resistance R5 connect in between resistance R3 and resistance R4, operational amplifier's inverting input end even has resistance R2.
In the present invention, preferably, the filter circuit includes a diode D1 and a diode D2, the diode D1 and the diode D2 are connected between the directional input end and the output end of the operational amplifier, and a resistor R1 and a capacitor C1 are connected in parallel at two ends of the diode D1 and the diode D2.
In the present invention, preferably, the transistors VT1-VT6 are all configured as insulated gate bipolar transistors.
The utility model has the advantages and positive effects that: through setting up the alternating current electric wire netting, PWM rectifier module, mutually support between two-way DC/DC module and the central control unit, two-way DC/DC module electric connection has the car battery, PWM rectifier module is used for rectifying the side alternating current of alternating current electric wire netting and is used for providing the electric energy for user's load, two-way DC/DC module inverts into the alternating current with the voltage after the promotion via PWM rectifier module and gets into the alternating current electric wire netting during discharge, charging process is used for realizing whole system's control through the central control unit, couple together alternating current electric wire netting and car battery, when the alternating current electric wire netting is unstable, can follow electric automobile and transmit back the electric wire netting, the two-way flow of energy between alternating current electric wire netting and the car battery has been realized, thereby the security and the stability of electric wire netting have been improved by a wide margin.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic circuit block diagram of a V2G charging pile of the present invention;
fig. 2 is a schematic circuit diagram of a PWM rectifier module of a V2G charging pile of the present invention;
fig. 3 is a schematic circuit diagram of a bidirectional DC/DC module of a V2G charging pile of the present invention;
fig. 4 is a schematic circuit diagram of a voltage sampling module of a V2G charging pile of the present invention;
fig. 5 is a schematic circuit diagram of a driving module of a V2G charging pile according to the present invention;
fig. 6 is a schematic circuit diagram of an auxiliary power module of a V2G charging pile of the present invention;
fig. 7 is a schematic circuit diagram of the auxiliary power supply module of the charging pile of V2G of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1-7, the utility model provides a V2G fills electric pile, including alternating current network, PWM rectifier module, two-way DC module and central control unit, alternating current network and PWM rectifier module electric connection, PWM rectifier module and two-way DC module electric connection, two-way DC module electric connection has car battery, PWM rectifier module is used for carrying out the rectification to alternating current network's side alternating current and is used for providing the electric energy to the user load, voltage after two-way DC module will rise during discharge is become the alternating current through PWM rectifier module contravariant and gets into alternating current network, charging process is used for realizing the control to whole system through central control unit. The PWM rectifier module is specifically a three-phase half-bridge rectifier module, wherein ua, ub and uc are voltages of a three-phase power grid, ia, ib and ic are three-phase alternating current input currents, Ls is an alternating current side inductor, R1 is an equivalent resistor, Cd is a direct current side filter capacitor, udc is a direct current bus voltage, idc is a direct current side output current, Rd is a load resistor, Ed is a direct current electromotive force, uaN, ubN and ucN are voltages of an a point, a b point and a c point relative to an N point, uNO is a voltage in the middle of an O point of the N point, the PWM rectifier module is used for achieving bidirectional circulation of electric energy, and has the advantages of low distortion rate and adjustable power factor, and buffers reactive power of the power grid side, and plays a role in filtering the currents of the alternating current grid side, so that a system can operate stably.
In this embodiment, further, the central control unit includes a driving module, an auxiliary power module and a DSP control module, the driving module is electrically connected to the auxiliary power module, the auxiliary power module is electrically connected to the DSP control module, the driving module outputs a soft turn-off signal to reduce electromagnetic interference, and the auxiliary power module is configured to provide a required voltage for each chip. The chip of the driving module adopts IR21141, the switching power supply regulator and a potentiometer are connected with a direct current voltage stabilizing source to obtain the required voltage of 15V, then the output 15V generates the required voltage of 5V through a voltage stabilizing chip LM7805CT and generates the voltage of +12V through a LM7805CT chip, and the 5V voltage generated through a chip LM7805CT generates the voltage of-12V through a voltage stabilizing chip MAX765CPA, wherein the switching power supply regulator adopts a chip of LM2596T type, and the switching power supply regulator of the series of types has the advantages of being capable of outputting the driving current of 3A and having good linearity and load regulation characteristics.
In the embodiment, the PWM rectifying module includes transistors VT1-VT6, and the transistors VT1-VT6 are respectively connected in parallel with diodes VD1-VD 6.
In this embodiment, further, the bidirectional DC/DC module includes a power tube VT7 and a power tube VT8, a diode VD7 is connected in parallel to two ends of the power tube VT7, and a diode VD8 is connected in parallel to the power tube VT8, and the power tube VT7 and the power tube VT8 are switched between a voltage boosting state and a voltage reducing state to exchange energy between the PWM rectifier module and the vehicle battery.
In this embodiment, further, a sampling module is electrically connected between the central control unit and the PWM rectifying module, and the sampling module is configured to collect a voltage signal and a current signal of the circuit and transmit the voltage signal and the current signal to the central control unit.
In this embodiment, further, the sampling module includes a voltage sampling circuit and a current sampling circuit, the voltage sampling circuit and the current sampling circuit have the same structure, the voltage sampling circuit includes a voltage reduction circuit, an operational amplifier and a filter circuit, a voltage signal is firstly attenuated by the voltage reduction circuit and then amplified by the operational amplifier, and then the filter circuit transmits the voltage signal to the central control unit.
In this embodiment, the voltage dropping circuit further includes a resistor R3, a resistor R4, and a resistor R5, one end of the resistor R3 is connected in series with the resistor R4, the other end of the resistor R3 is connected to the positive input terminal of the operational amplifier, the resistor R5 is connected between the resistor R3 and the resistor R4, and the inverting input terminal of the operational amplifier is connected to the resistor R2.
In this embodiment, the filter circuit further includes a diode D1 and a diode D2, the diode D1 and the diode D2 are connected between the directional input end and the output end of the operational amplifier, and a resistor R1 and a capacitor C1 are connected in parallel between the two ends of the diode D1 and the diode D2.
In the embodiment, the transistors VT1-VT6 are all provided as insulated gate bipolar transistors. The transistor has the characteristics of simple driving circuit, large current capacity, high withstand voltage and good safety.
The utility model discloses a theory of operation and working process as follows: when the charging pile is used for charging the automobile storage battery, the power tube VT7 of the bidirectional DC/DC module is conducted, the power tube VT8 is turned off, the bidirectional DC/DC module is in a voltage reduction state at the moment, follow current exists in the circuit due to the inductor L, the PWM rectification module is in a rectification working state, and energy is transmitted to the automobile storage battery from an alternating current power grid; when the automobile storage battery discharges, the power tube VT7 is turned off, the power tube VT8 is turned on, the bidirectional DC/DC module is in a boosting state at the moment, the PWM rectifier module is in an active inversion working state, energy stored in the automobile storage battery is transmitted to an alternating current power grid, the topological structure of the circuit is simple, the charging and discharging of the automobile storage battery can be controlled by adjusting the duty ratio, the bidirectional flowing of the energy between the alternating current power grid and the automobile storage battery is realized, the discharged energy of the automobile storage battery can be absorbed, and the operability is strong.
The sampling circuit is used for collecting voltage signals and current signals in the circuit, the A/D port of the DSP control module only receives 0V voltage signals and 3.3V voltage signals, after the main circuit signals are detected, the collected signals can be converted through the sampling circuit, the voltage signals are subjected to signal attenuation through the resistor R3, the resistor R4 and the resistor R5, then the input sampling signals are enabled to improve the anti-interference capacity through the signal amplification process of the operational amplifier, and the problem of signal loss possibly generated by output signals is reduced.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.
Claims (10)
1. The utility model provides a V2G fills electric pile, its characterized in that includes alternating current network, PWM rectifier module, two-way DC/DC module and central control unit, alternating current network with PWM rectifier module electric connection, PWM rectifier module and two-way DC/DC module electric connection, two-way DC/DC module electric connection has the car battery, PWM rectifier module is used for rectifying the side alternating current of alternating current network is used for providing electric energy for user's load, during discharge the two-way DC/DC module with the voltage after the rising through PWM rectifier module invertion become the alternating current and enter the alternating current network, the charging process is used for realizing the control to whole system through the central control unit.
2. The V2G charging pile of claim 1, wherein the central control unit comprises a driving module, an auxiliary power module and a DSP control module, the driving module is electrically connected with the auxiliary power module, the auxiliary power module is electrically connected with the DSP control module, the driving module outputs a soft turn-off signal to reduce electromagnetic interference, and the auxiliary power module is used for providing required voltage for each chip.
3. The V2G charging post according to claim 1, wherein the PWM rectifying module includes a transistor VT1-VT6, and the transistors VT1-VT6 are respectively connected in parallel with diodes VD1-VD 6.
4. The V2G charging pile of claim 1, wherein the bidirectional DC/DC module comprises a power tube VT7 and a power tube VT8, a diode VD7 is connected in parallel with two ends of the power tube VT7, a diode VD8 is connected in parallel with the power tube VT8, and the power tube VT7 and the power tube VT8 are switched between a voltage boosting state and a voltage reducing state in a conducting or switching-off mode to realize energy exchange between the PWM rectification module and the automobile storage battery.
5. The V2G charging pile of claim 1, wherein a sampling module is electrically connected between the central control unit and the PWM rectifying module, and the sampling module is used for collecting voltage signals and current signals of a circuit and transmitting the voltage signals and the current signals to the central control unit.
6. The V2G charging pile of claim 5, wherein the sampling module comprises a voltage sampling circuit and a current sampling circuit, the voltage sampling circuit and the current sampling circuit are identical in structure, the voltage sampling circuit comprises a voltage reduction circuit, an operational amplifier and a filter circuit, a voltage signal is firstly attenuated by the voltage reduction circuit and then amplified by the operational amplifier, and then the voltage signal is transmitted to the central control unit by the filter circuit.
7. The charging post for V2G as claimed in claim 6, wherein said voltage-dropping circuit comprises a resistor R3, a resistor R4 and a resistor R5, one end of said resistor R3 is connected in series with said resistor R4, the other end of said resistor R3 is connected to the positive input terminal of said operational amplifier, said resistor R5 is connected between said resistor R3 and said resistor R4, and the inverting input terminal of said operational amplifier is connected to a resistor R2.
8. The charging post for V2G according to claim 6, wherein the filter circuit includes a diode D1 and a diode D2, the diode D1 and the diode D2 are connected between the directional input end and the output end of the operational amplifier, and a resistor R1 and a capacitor C1 are connected in parallel to two ends of the diode D1 and a diode D2.
9. The V2G charging post according to claim 3, wherein the transistors VT1-VT6 are all configured as IGBT transistors.
10. The V2G charging post according to claim 2, wherein the driving module is an IR21141 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021862870.7U CN213892231U (en) | 2020-08-31 | 2020-08-31 | V2G fills electric pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021862870.7U CN213892231U (en) | 2020-08-31 | 2020-08-31 | V2G fills electric pile |
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| CN213892231U true CN213892231U (en) | 2021-08-06 |
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| CN202021862870.7U Active CN213892231U (en) | 2020-08-31 | 2020-08-31 | V2G fills electric pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115742812A (en) * | 2022-11-15 | 2023-03-07 | 国网河南省电力公司安阳供电公司 | Electric automobile that energy can repay fills electric pile system |
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2020
- 2020-08-31 CN CN202021862870.7U patent/CN213892231U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115742812A (en) * | 2022-11-15 | 2023-03-07 | 国网河南省电力公司安阳供电公司 | Electric automobile that energy can repay fills electric pile system |
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