CN111469699A - Light storage device and control method thereof - Google Patents
Light storage device and control method thereof Download PDFInfo
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- CN111469699A CN111469699A CN202010292238.1A CN202010292238A CN111469699A CN 111469699 A CN111469699 A CN 111469699A CN 202010292238 A CN202010292238 A CN 202010292238A CN 111469699 A CN111469699 A CN 111469699A
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- 238000000034 method Methods 0.000 title claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 126
- 238000004146 energy storage Methods 0.000 claims abstract description 49
- 238000010248 power generation Methods 0.000 claims abstract description 21
- 230000005611 electricity Effects 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 2
- 210000004027 cell Anatomy 0.000 abstract description 7
- 230000009977 dual effect Effects 0.000 abstract description 4
- 210000000352 storage cell Anatomy 0.000 abstract description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/50—Charging stations characterised by energy-storage or power-generation means
- B60L53/51—Photovoltaic means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/50—Charging stations characterised by energy-storage or power-generation means
- B60L53/53—Batteries
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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
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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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
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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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
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a light storage and charging device which comprises an alternating current-direct current conversion circuit, a direct current bus, a first direct current-direct current conversion circuit, a second direct current-direct current conversion circuit, a third direct current-direct current conversion circuit, a solar cell panel, an energy storage cell and an electric automobile charging gun, wherein the alternating current side of the alternating current-direct current conversion circuit is connected with a power grid, the direct current bus is connected with the alternating current-direct current conversion circuit, the first direct current-direct current conversion circuit, the second direct current-direct current conversion circuit and the third direct current-direct current conversion circuit are connected with the direct current bus, and the solar cell panel, the energy storage cell and the electric automobile charging gun are connected with the first direct current-direct current conversion circuit. A control method is also provided. The light storage device has the dual characteristics of power generation and power utilization, and supplies power to a local power grid when the power supply of the power grid is insufficient or the power grid fails; when the power supply is sufficient, solar energy and electric energy of a power grid are stored in the battery; when the electric automobile needs to be charged, the energy of solar energy, stored energy and a power grid is reasonably matched, and the charging requirement of the electric automobile is met.
Description
Technical Field
The invention relates to the technical field of charging of a microgrid and an electric vehicle, in particular to a light storage device and a control method thereof.
Background
It is very difficult to add an electric vehicle charging facility in an area where power supply is insufficient, power expansion cost is high, or power expansion is difficult. At present, no device can meet the requirements of photovoltaic power generation, energy storage, electric automobile charging and off-grid power supply at the same time.
Disclosure of Invention
In order to solve the problems of insufficient power supply, high power expansion cost or difficulty in power expansion in the prior art, a first aspect of the invention provides a light storage and charging device, which comprises an alternating current-direct current conversion circuit, a direct current bus, a first direct current-direct current conversion circuit, a second direct current-direct current conversion circuit, a third direct current-direct current conversion circuit, a solar cell panel, an energy storage cell and an electric vehicle charging gun, wherein the alternating current-direct current conversion circuit is connected with an alternating current side and a power grid, the direct current bus is connected with the alternating current-direct current conversion circuit, the first direct current-direct current conversion circuit, the second direct current-direct current conversion circuit and the third direct current-direct current conversion circuit are connected with the direct current bus, the solar cell panel is connected with the first direct current-direct current conversion circuit, the energy storage cell is connected with the second direct current.
Further, the alternating current side of the alternating current-direct current conversion circuit is also used for connecting with a local load.
Further, the system also comprises a switch arranged between a power grid and the alternating current and direct current conversion circuit.
Further, the operation mode of the light charging and storing device is as follows:
when the light storage device is used as a load, the alternating current-direct current conversion circuit draws energy from the power grid, supplies power to a local load and supplies power to the direct current bus; meanwhile, the first direct current-to-direct current conversion circuit transfers the electric energy generated by the solar panel to the direct current bus; the second direct current-to-direct current conversion circuit autonomously selects to transfer the electric energy of the energy storage battery to the direct current bus or store the electric energy of the direct current bus to the energy storage battery according to the condition of the energy storage battery and the power price; the third direct current-to-direct current conversion circuit obtains electric energy from a direct current bus according to the charging condition of the electric automobile and the energy condition of the whole light storage device;
when the light storage device is used as a power supply for grid-connected power generation, the first direct current-to-direct current conversion circuit transfers electric energy generated by the solar panel to the direct current bus, and the second direct current-to-direct current conversion circuit autonomously selects whether to transfer the electric energy of the energy storage battery to the direct current bus or store the electric energy on the direct current bus into the energy storage battery according to the condition of the energy storage battery, the price of electricity and the solar energy generation amount; the third direct current-to-direct current conversion circuit obtains electric energy from a direct current bus according to the charging condition of the electric automobile and the energy condition of the whole light storage device; the alternating current-direct current conversion circuit transfers the electric energy on the direct current bus to a power grid or a local load;
when the light storage device is used as a power supply for off-grid power generation, the alternating current-direct current conversion circuit is disconnected with a power grid, and the alternating current side of the alternating current-direct current conversion circuit provides electric energy for a local load; the first direct current-to-direct current conversion circuit transfers the electric energy generated by the solar panel to the direct current bus, and the second direct current-to-direct current conversion circuit autonomously selects whether to transfer the electric energy of the energy storage battery to the direct current bus or store the electric energy on the direct current bus into the energy storage battery according to the condition of the energy storage battery and the magnitude of solar power generation; and the electric vehicle charging gun obtains electric energy from the direct current bus.
In another aspect of the present invention, a control method based on the above light storage and charging apparatus is further provided, which includes the following steps:
when the light storage device is used as a load, controlling an alternating current-direct current conversion circuit to draw energy from the power grid, supplying power to a local load and supplying power to the direct current bus; controlling the first direct current to direct current conversion circuit to transfer electric energy generated by the solar panel to the direct current bus; meanwhile, the second direct current-to-direct current conversion circuit is controlled to transfer the stored electric energy to the direct current bus or store the electric energy on the direct current bus into an energy storage battery; the electric vehicle charging gun obtains electric energy from the direct current bus;
when the light storage device is used as a power supply for grid-connected power generation, the first direct-current to direct-current conversion circuit is controlled to transfer electric energy generated by the solar panel to the direct-current bus, and meanwhile, the second direct-current to direct-current conversion circuit is controlled to transfer the stored electric energy to the direct-current bus or store the electric energy on the direct-current bus into the energy storage battery; controlling the alternating current-direct current conversion circuit to transfer electric energy on a direct current bus to a power grid or a local load, and controlling the electric vehicle charging gun to obtain electric energy from the direct current bus;
when the light storage device is used as a power supply for off-grid power generation, the AC-DC conversion circuit is controlled to be disconnected with a power grid, and the AC side of the AC-DC conversion circuit provides electric energy for a local load; controlling the first direct current-to-direct current conversion circuit to transfer electric energy generated by the solar panel to the direct current bus, and simultaneously controlling the second direct current-to-direct current conversion circuit to transfer the stored electric energy to the direct current bus or store the electric energy on the direct current bus into the energy storage battery; and controlling the alternating current-direct current conversion circuit to convert the electric energy on the direct current bus to a local load, and controlling the electric vehicle charging gun to obtain the electric energy from the direct current bus.
The novel integrated light storage device has the dual characteristics of power generation and power utilization, and supplies power to a local power grid when the power grid is insufficient or fails; when the power supply is sufficient, solar energy and electric energy of a power grid are stored in the battery; when the electric automobile needs to be charged, the energy of solar energy, stored energy and a power grid is reasonably matched, and the charging requirement of the electric automobile is met.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
fig. 1 is a schematic circuit topology of an optical charging and storing device according to some embodiments of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Fig. 1 shows a circuit topology structure diagram of the optical storage apparatus of the present invention, and the technical solution of the present invention is implemented by the following measures:
a first part: the AC-DC conversion circuit is directly connected with a power grid through an AC test and can be disconnected with the power grid when the power grid is powered off; the DC side of the AC/DC conversion circuit is respectively connected with the first DC/DC conversion circuit, the second DC/DC conversion circuit and the third DC/DC conversion circuit through a DC bus;
a second part: the first DC/DC conversion circuit comprises one or more DC/DC circuits, and the solar panel is respectively connected with the one or more first DC/DC conversion circuits;
and a third part: the second DC/DC conversion circuit comprises one or more DC/DC circuits, and the energy storage batteries are respectively connected with the one or more second DC/DC conversion circuits;
the fourth part: the third DC/DC conversion circuit comprises one or more DC/DC circuits, and the electric automobile charging gun is respectively connected with the one or more third DC/DC conversion circuits.
The following is a further statement on the technical scheme of the invention:
the novel integrated light storage device has the dual characteristics of load and power supply.
When the light storage device is used as a load, energy is drawn from a power grid, power is supplied to a local load, and an electric automobile is charged; the energy of the solar panel is distributed to the energy storage battery and the electric automobile through a direct current (DC/DC) conversion circuit, or the energy of the energy storage battery is released to a direct current bus through the direct current (DC/DC) conversion circuit and is supplied to a local load for power supply and the electric automobile for use;
when the light storage device is used as a power supply for grid-connected power generation, the energy of the solar cell panel and the energy of the energy storage battery are fed back to a power grid, or the energy is used by a local load to charge an electric vehicle;
when the light storage device is used as a power supply for off-grid power generation, a connecting switch between the light storage device and a power grid is cut off, and the energy of the solar cell panel and the energy of the energy storage battery are supplied to a local load to charge the electric automobile.
In summary, in a first aspect of the present invention, a light storage and charging device is provided, which includes an ac-dc conversion circuit whose ac side is connected to a power grid, a dc bus connected to the ac-dc conversion circuit, a first dc-dc conversion circuit connected to the dc bus, a second dc-dc conversion circuit, a third dc-dc conversion circuit, a solar cell panel connected to the first dc-dc conversion circuit, an energy storage battery connected to the second dc-dc conversion circuit, and an electric vehicle charging gun connected to the third dc-dc conversion circuit.
Further, the alternating current side of the alternating current-direct current conversion circuit is also used for connecting with a local load.
Further, the system also comprises a switch arranged between a power grid and the alternating current and direct current conversion circuit.
Further, the operation mode of the light charging and storing device is as follows:
when the light storage device is used as a load, the alternating current-direct current conversion circuit draws energy from the power grid, supplies power to a local load and supplies power to the direct current bus; meanwhile, the first direct current-to-direct current conversion circuit transfers the electric energy generated by the solar panel to the direct current bus; the second direct current-to-direct current conversion circuit autonomously selects to transfer the electric energy of the energy storage battery to the direct current bus or store the electric energy of the direct current bus to the energy storage battery according to the condition of the energy storage battery and the power price; the third direct current-to-direct current conversion circuit obtains electric energy from a direct current bus according to the charging condition of the electric automobile and the energy condition of the whole light storage device;
when the light storage device is used as a power supply for grid-connected power generation, the first direct current-to-direct current conversion circuit transfers electric energy generated by the solar panel to the direct current bus, and the second direct current-to-direct current conversion circuit autonomously selects whether to transfer the electric energy of the energy storage battery to the direct current bus or store the electric energy on the direct current bus into the energy storage battery according to the condition of the energy storage battery, the price of electricity and the solar energy generation amount; the third direct current-to-direct current conversion circuit obtains electric energy from a direct current bus according to the charging condition of the electric automobile and the energy condition of the whole light storage device; the alternating current-direct current conversion circuit transfers the electric energy on the direct current bus to a power grid or a local load;
when the light storage device is used as a power supply for off-grid power generation, the alternating current-direct current conversion circuit is disconnected with a power grid, and the alternating current side of the alternating current-direct current conversion circuit provides electric energy for a local load; the first direct current-to-direct current conversion circuit transfers the electric energy generated by the solar panel to the direct current bus, and the second direct current-to-direct current conversion circuit autonomously selects whether to transfer the electric energy of the energy storage battery to the direct current bus or store the electric energy on the direct current bus into the energy storage battery according to the condition of the energy storage battery and the magnitude of solar power generation; and the electric vehicle charging gun obtains electric energy from the direct current bus.
In another aspect of the present invention, a control method based on the above light storage and charging apparatus is further provided, which includes the following steps:
when the light storage device is used as a load, controlling an alternating current-direct current conversion circuit to draw energy from the power grid, supplying power to a local load and supplying power to the direct current bus; controlling the first direct current to direct current conversion circuit to transfer electric energy generated by the solar panel to the direct current bus; meanwhile, the second direct current-to-direct current conversion circuit is controlled to transfer the stored electric energy to the direct current bus or store the electric energy on the direct current bus into an energy storage battery; the electric vehicle charging gun obtains electric energy from the direct current bus;
when the light storage device is used as a power supply for grid-connected power generation, the first direct-current to direct-current conversion circuit is controlled to transfer electric energy generated by the solar panel to the direct-current bus, and meanwhile, the second direct-current to direct-current conversion circuit is controlled to transfer the stored electric energy to the direct-current bus or store the electric energy on the direct-current bus into the energy storage battery; controlling the alternating current-direct current conversion circuit to transfer electric energy on a direct current bus to a power grid or a local load, and controlling the electric vehicle charging gun to obtain electric energy from the direct current bus;
when the light storage device is used as a power supply for off-grid power generation, the AC-DC conversion circuit is controlled to be disconnected with a power grid, and the AC side of the AC-DC conversion circuit provides electric energy for a local load; controlling the first direct current-to-direct current conversion circuit to transfer electric energy generated by the solar panel to the direct current bus, and simultaneously controlling the second direct current-to-direct current conversion circuit to transfer the stored electric energy to the direct current bus or store the electric energy on the direct current bus into the energy storage battery; and controlling the alternating current-direct current conversion circuit to convert the electric energy on the direct current bus to a local load, and controlling the electric vehicle charging gun to obtain the electric energy from the direct current bus.
The novel integrated light storage device has the dual characteristics of power generation and power utilization, and supplies power to a local power grid when the power grid is insufficient or fails; when the power supply is sufficient, solar energy and electric energy of a power grid are stored in the battery; when the electric automobile needs to be charged, the energy of solar energy, stored energy and a power grid is reasonably matched, and the charging requirement of the electric automobile is met.
In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The light storage and charging device is characterized by comprising an alternating current-direct current conversion circuit, a direct current bus, a first direct current-direct current conversion circuit, a second direct current-direct current conversion circuit, a third direct current-direct current conversion circuit, a solar cell panel, an energy storage battery and an electric automobile charging gun, wherein the alternating current side of the alternating current-direct current conversion circuit is connected with a power grid, the direct current bus is connected with the alternating current-direct current conversion circuit, the first direct current-direct current conversion circuit, the second direct current-direct current conversion circuit and the third direct current-direct current conversion circuit are connected with the direct current bus, and the solar cell panel, the energy storage battery and the electric automobile charging gun are connected with the first direct current-direct current conversion circuit, the second direct.
2. The optical charging and discharging device according to claim 1, wherein the ac-dc conversion circuit is further configured to be connected to a local load on the ac side.
3. The light charging and discharging device according to claim 2, further comprising a switch disposed between a power grid and the ac-dc conversion circuit.
4. A light charging and storing device according to claims 1 to 3, characterized in that the light charging and storing device operates in the following modes:
when the light storage device is used as a load, the alternating current-direct current conversion circuit draws energy from the power grid, supplies power to a local load and supplies power to the direct current bus; meanwhile, the first direct current-to-direct current conversion circuit transfers the electric energy generated by the solar panel to the direct current bus; the second direct current-to-direct current conversion circuit autonomously selects to transfer the electric energy of the energy storage battery to the direct current bus or store the electric energy of the direct current bus to the energy storage battery according to the condition of the energy storage battery and the power price; the third direct current-to-direct current conversion circuit obtains electric energy from a direct current bus according to the charging condition of the electric automobile and the energy condition of the whole light storage device;
when the light storage device is used as a power supply for grid-connected power generation, the first direct current-to-direct current conversion circuit transfers electric energy generated by the solar panel to the direct current bus, and the second direct current-to-direct current conversion circuit autonomously selects whether to transfer the electric energy of the energy storage battery to the direct current bus or store the electric energy on the direct current bus into the energy storage battery according to the condition of the energy storage battery, the price of electricity and the solar energy generation amount; the third direct current-to-direct current conversion circuit obtains electric energy from a direct current bus according to the charging condition of the electric automobile and the energy condition of the whole light storage device; the alternating current-direct current conversion circuit transfers the electric energy on the direct current bus to a power grid or a local load;
when the light storage device is used as a power supply for off-grid power generation, the alternating current-direct current conversion circuit is disconnected with a power grid, and the alternating current side of the alternating current-direct current conversion circuit provides electric energy for a local load; the first direct current-to-direct current conversion circuit transfers the electric energy generated by the solar panel to the direct current bus, and the second direct current-to-direct current conversion circuit autonomously selects whether to transfer the electric energy of the energy storage battery to the direct current bus or store the electric energy on the direct current bus into the energy storage battery according to the condition of the energy storage battery and the magnitude of solar power generation; and the electric vehicle charging gun obtains electric energy from the direct current bus.
5. A control method based on the light storage and charging device of claims 1-4, comprising the following steps:
when the light storage device is used as a load, controlling an alternating current-direct current conversion circuit to draw energy from the power grid, supplying power to a local load and supplying power to the direct current bus; controlling the first direct current to direct current conversion circuit to transfer electric energy generated by the solar panel to the direct current bus; meanwhile, the second direct current-to-direct current conversion circuit is controlled to transfer the stored electric energy to the direct current bus or store the electric energy on the direct current bus into an energy storage battery; the electric vehicle charging gun obtains electric energy from the direct current bus;
when the light storage device is used as a power supply for grid-connected power generation, the first direct-current to direct-current conversion circuit is controlled to transfer electric energy generated by the solar panel to the direct-current bus, and meanwhile, the second direct-current to direct-current conversion circuit is controlled to transfer the stored electric energy to the direct-current bus or store the electric energy on the direct-current bus into the energy storage battery; controlling the alternating current-direct current conversion circuit to transfer electric energy on a direct current bus to a power grid or a local load, and controlling the electric vehicle charging gun to obtain electric energy from the direct current bus;
when the light storage device is used as a power supply for off-grid power generation, the AC-DC conversion circuit is controlled to be disconnected with a power grid, and the AC side of the AC-DC conversion circuit provides electric energy for a local load; controlling the first direct current-to-direct current conversion circuit to transfer electric energy generated by the solar panel to the direct current bus, and simultaneously controlling the second direct current-to-direct current conversion circuit to transfer the stored electric energy to the direct current bus or store the electric energy on the direct current bus into the energy storage battery; and controlling the alternating current-direct current conversion circuit to convert the electric energy on the direct current bus to a local load, and controlling the electric vehicle charging gun to obtain the electric energy from the direct current bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010292238.1A CN111469699A (en) | 2020-04-15 | 2020-04-15 | Light storage device and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010292238.1A CN111469699A (en) | 2020-04-15 | 2020-04-15 | Light storage device and control method thereof |
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| CN111469699A true CN111469699A (en) | 2020-07-31 |
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| WO2018036520A1 (en) * | 2016-08-25 | 2018-03-01 | 上海蔚来汽车有限公司 | Compact and distributed station for charging, battery replacement and energy storage |
| CN106505644A (en) * | 2016-12-16 | 2017-03-15 | 北京索英电气技术有限公司 | Integral system is filled in a kind of light storage based on double-bus microgrid framework |
| CN108281982A (en) * | 2018-02-24 | 2018-07-13 | 青海百能汇通新能源科技有限公司 | Charge transport circuit and charging system for electric automobile |
| CN208479268U (en) * | 2018-08-07 | 2019-02-05 | 王芊霖 | Photovoltaic energy storage charge and discharge device |
| CN110293869A (en) * | 2019-06-28 | 2019-10-01 | 易事特集团股份有限公司 | Light storage and charging integrated system |
| CN213167796U (en) * | 2020-04-15 | 2021-05-11 | 北京启能光科电力有限责任公司 | Light stores up fills device |
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Application publication date: 20200731 |