CN117691921A - Photovoltaic power generation and energy storage compatible system - Google Patents
Photovoltaic power generation and energy storage compatible system Download PDFInfo
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- CN117691921A CN117691921A CN202410148913.1A CN202410148913A CN117691921A CN 117691921 A CN117691921 A CN 117691921A CN 202410148913 A CN202410148913 A CN 202410148913A CN 117691921 A CN117691921 A CN 117691921A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 278
- 238000010248 power generation Methods 0.000 title claims abstract description 101
- 230000003247 decreasing effect Effects 0.000 abstract description 2
- 210000004027 cell Anatomy 0.000 description 114
- 230000005540 biological transmission Effects 0.000 description 9
- 208000028659 discharge Diseases 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000013589 supplement Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 210000003850 cellular structure Anatomy 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
- F24S25/60—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/20—Systems characterised by their energy storage means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/32—Electrical components comprising DC/AC inverter means associated with the PV module itself, e.g. AC modules
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application discloses a photovoltaic power generation and energy storage compatible system, which comprises a solar cell module formed by a plurality of solar cells, an energy storage part group, a power grid system and a load system, wherein the energy storage part group, the power grid system and the load system are respectively communicated with the solar cell module through an inverter, electric energy generated in the solar cell module can be transmitted to one or more parts of the energy storage part group, the power grid system and the load system, and the load system has a full-load state that the required electric energy is larger than the electric energy provided by the power grid system; the load system is in a full load state, and the solar cell module is provided with a first power generation state, a second power generation state and a third power generation state which are gradually decreased in power generation amount. Through solar module and load system in this application, can have different generated energy to the weather condition of difference and in the different time quantum, solar module to according to solar module and load system's actual demand, make the electric energy can realize reasonable distribution.
Description
Technical Field
The application belongs to the field of photovoltaic power generation, and particularly provides a photovoltaic power generation and energy storage compatible system.
Background
The photovoltaic power generation is a technology for directly converting light energy into electric energy by utilizing the photovoltaic effect of a semiconductor interface, and mainly comprises a solar panel, a controller and an inverter, wherein the photovoltaic power generation is used as an auxiliary power generation facility for supplementing electric energy because of unstable factors such as day-night difference, weather change and the like; however, because the photovoltaic power generation is affected by the external environment, when auxiliary power generation is carried out, an energy storage device is often matched for storing electric energy, the energy storage system can store electric energy when being charged, and the power is supplied to the system in daytime and at night; however, when the energy storage device stores energy, the energy storage device is influenced by the generated energy during photovoltaic power generation, so that the energy storage device and the power generation device are compatible when power generation is performed, and therefore, when power generation is performed, the energy storage device can meet the requirements and simultaneously store and release electric energy.
Disclosure of Invention
In order to overcome the defects, the invention provides a photovoltaic power generation and energy storage compatible system which can realize better compatibility between a solar cell module and an energy storage element group under different working states of a load system.
The photovoltaic power generation and energy storage compatible system comprises a solar cell assembly formed by a plurality of solar cells, an energy storage component group, a power grid system and a load system, wherein the energy storage component group, the power grid system and the load system are respectively communicated with the solar cell assembly through an inverter, electric energy generated in the solar cell assembly can be transmitted to one or more parts of the energy storage component group, the power grid system and the load system, and the load system has a full-load state that the required electric energy is larger than the electric energy provided by the power grid system; the load system is in a full load state, the solar cell module is provided with a first power generation state, a second power generation state and a third power generation state, the power generation amount of the first power generation state is sequentially decreased, the solar cell module is in the first power generation state, electric energy generated by the solar cell module is respectively transmitted to the energy storage part group and the load system, and the electric energy transmitted to the energy storage part group is more than the electric energy transmitted to the load system; the solar cell module is in a second power generation state, electric energy generated by the solar cell module is respectively transmitted to the energy storage component group and the load system, meanwhile, electric energy in the power grid system is transmitted to the load system, and electric energy transmitted to the energy storage component group by the solar cell module is less than electric energy transmitted to the load system, wherein electric energy transmitted to the energy storage component group by the solar cell module in the first power generation state is more than electric energy transmitted to the energy storage component group by the solar cell module in the second power generation state; and under the third power generation state, the electric energy generated by the solar cell module, the energy storage component group and the electric energy in the power grid system are all transmitted to the load system. According to the solar cell module and the load system, different power generation amounts can be achieved through the solar cell module according to different weather conditions and different time periods, so that reasonable distribution of electric energy in the solar cell module can be achieved according to actual demands of the solar cell module and the load system, the demand of the load system can be met, meanwhile, the electric energy can be stored when the electric energy generated by the solar cell module is more, the electric energy can be timely supplemented through the energy storage part group when the electric energy generated by the solar cell module is insufficient, better compatibility can be achieved between the solar cell module and the power grid system, meanwhile, the power demand of the load system in a full-load state can be met, and further the compatibility between the energy storage part group and the power grid system is achieved, so that the power grid system can be timely supplemented through the electric energy stored in the energy storage part group when the electric energy required by the load system in the full-load state cannot be met.
Further, the energy storage component group comprises a first energy storage component and a second energy storage component with electric quantity larger than that of the first energy storage component, the solar cell module is in a first power generation state, and electric energy at the solar cell module is transmitted to the second energy storage component through the first energy storage component; and the solar cell assembly is in a third power generation state, and the electric energy in the second energy storage piece is transmitted to the load system. Through setting up first energy storage piece and second energy storage piece in the energy storage piece group, and the electric quantity of storing of both is different, when solar module is in under the first power generation state, the electric energy that solar module department produced can send to the energy storage piece group in store, and in the in-process of storing, at first carry the first energy storage piece department that the electric quantity is less, when first energy storage piece department stores certain electric energy, carry the electric energy of first energy storage piece again to second energy storage piece department, thereby avoid first energy storage piece to be in empty or full load state, in order to improve the life of first energy storage piece, and when needs the energy storage piece group to carry out the replenishment of electric energy for the load system, then can carry out discharge treatment through the second energy storage piece, because the electric quantity of second energy storage piece department is great, therefore make the second energy storage piece carry out discharge treatment, can reduce the probability of energy storage piece overdischarge, can improve the life of energy storage piece group equally.
Further, the solar cell module is in a first power generation state, and the conveying speed of the solar cell module to the first energy storage piece is smaller than the conveying speed of the first energy storage piece to the second energy storage piece; and the solar cell module is in a second power generation state, and the conveying speed of the solar cell module to the first energy storage piece is greater than the conveying speed of the first energy storage piece to the second energy storage piece. The conveying speed of the solar cell module to the first energy storage part is smaller than the conveying speed of the first energy storage part to the second energy storage part, so that the stored electric energy in the first energy storage part can be ensured to be conveyed, an empty load state is formed in the first energy storage part, meanwhile, in a first power generation state, more electric energy is conveyed to the first energy storage part by the solar cell module, the first energy storage part can be prevented from being in a full load state, and in a second power generation state, because the electric energy conveyed to the first energy storage part by the solar cell module is relatively less, even if the conveying speed of the solar cell module to the first energy storage part is larger than the conveying speed of the first energy storage part to the second energy storage part, the first energy storage part can be prevented from rapidly reaching the full load state.
Further, the electric energy transmitted to the load system by the solar cell module in the first power generation state is the same as the electric energy transmitted to the load system by the solar cell module in the second power generation state. When the load system is in a full load state, the difference value between the electric energy transmitted by the power grid system and the electric energy required by the load system is relatively fixed, so that the solar cell module can firstly meet the requirement of the load system when the electric energy is transmitted, and then store the redundant electric energy so that the load system can work normally.
Further, the solar cell module is in the first power generation state, and electric energy in the energy storage element group can be transmitted to the power grid system. When the energy storage component reaches the full-load state, in order to avoid the long-time full-load state in the energy storage component, the electric energy in the energy storage component can be transmitted to a power grid system, so that the utilization of redundant electric energy is realized.
Further, the load system is in an idle state in which the required electric energy is smaller than the electric energy provided by the power grid system, and the electric energy generated by the solar cell module is transmitted to the energy storage component group. When the load system is in an idle state, the power grid system can meet the power consumption requirement of the load system, so that the solar cell module does not need to be provided for the load system after generating electric energy, and can be fully conveyed to the energy storage part group for storage.
Further, the energy storage part group comprises a first energy storage part and a second energy storage part with the electric quantity larger than that of the first energy storage part, and the conveying speed of the solar cell assembly to the first energy storage part is the same as the conveying speed of the first energy storage part to the second energy storage part when the load system is in an idle state.
Further, when the load system is in an idle state and the energy storage component is fully loaded, the electric energy generated by the solar cell component is transmitted to the power grid system. When the load system is in an idle state and the energy storage component is fully loaded, the electric energy generated by the solar cell component is transmitted to the power grid system; when the load system is in an idle state, electric energy generated by the solar cell module is firstly transmitted to the first energy storage part, then the electric energy is transmitted to the second energy storage part through the first energy storage part, and after a certain amount of electric energy is stored in the first energy storage part, electric energy is transmitted again, at the moment, the transmission speed of the solar cell module to the first energy storage part is the same as the transmission speed of the first energy storage part to the second energy storage part, so that the second energy storage part can be ensured to be in a full load state at first, and the electric energy in the second energy storage part can be transmitted to the power grid system, so that redundant electric energy can be transmitted to other loads through the power grid system for use, and the waste of the electric energy is avoided.
Further, the load system comprises a charging frame body formed with a charging space and a top plate arranged at the top end of the charging frame body, the solar cell module is arranged at the top plate, the charging frame body comprises a cross beam positioned at the upper side of the charging space, and the energy storage part group is arranged at the cross beam. The solar cell module is located the roof department to can receive solar light better and realize generating electricity, the charging frame body department is provided with the crossbeam that is located the charging space upside simultaneously, and energy storage group sets up in crossbeam department, consequently the charging frame body can protect energy storage group equally, makes it avoid the interference that sun-shine drenches, thereby improves the stability when energy storage group uses, and energy storage group and load system integration set up in same department, also can improve the compatibility between load system and the energy storage group.
Further, the top plate is provided with a hinged end hinged with the charging frame body and a movable end opposite to the hinged end, and a sliding rod capable of moving back and forth relative to the charging frame body along the vertical direction is arranged at the movable end. The top plate can move in the vertical direction relative to the charging frame body through the sliding rod, and in the moving process, the hinged end can rotate around the charging frame body, so that the angle of the solar cell module at the top plate is driven to change, the solar cell module can better correspond to sunlight, and a better charging effect is obtained.
Drawings
Embodiments of the present application are described below with reference to the accompanying drawings, in which:
fig. 1 is a schematic flow chart illustrating a solar cell module in a first power generation state according to the present invention;
FIG. 2 is a schematic flow chart illustrating a solar cell module in a second power generation state according to the present invention;
FIG. 3 is a schematic flow chart illustrating a solar cell module in a third power generation state according to the present invention;
FIG. 4 is a schematic flow chart illustrating the load system in idle state according to the present invention;
fig. 5 is a schematic diagram illustrating an exemplary embodiment of a load system according to the present invention.
Reference numerals:
1. the solar battery module comprises a solar battery module body 11, a solar battery 2, an energy storage part group 21, a first energy storage part 22, a second energy storage part 3, a power grid system 4, a load system 41, a charging frame body 42, a top plate 43, a cross beam 44, a sliding rod 5 and an inverter.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, in the embodiments of the present invention, terms such as left, right, up, down, front, and back are merely relative terms or references to a normal use state of a product, i.e. a traveling direction of the product, and should not be construed as limiting.
In addition, the dynamic terms such as "relative movement" in the embodiments of the present invention include not only a change in position but also a movement in which a state is changed without a relative change in position such as rotation or rolling.
Finally, it is noted that when an element is referred to as being "on" or "disposed on" another element, it can be on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.
A photovoltaic power generation and energy storage compatible system as shown in fig. 1 to 5, the photovoltaic power generation and energy storage compatible system comprises a solar cell module 1 composed of a plurality of solar cells 11, and an energy storage element group 2, a power grid system 3 and a load system 4 which are respectively communicated with the solar cell module 1 through an inverter 5, wherein the electric energy generated in the solar cell module 1 can be transmitted to one or more of the energy storage element group 2, the power grid system 3 and the load system 4, wherein the solar cell module 1 can convert the light energy into the electric energy, the generated electric energy is the direct current, the load system 4 needs to be the alternating current, the generated direct current needs to be converted into the alternating current through the inverter 5, and the power grid system 3 is connected with the load system 4 for the application, namely the electric energy required by the load system 4 is firstly provided by the power grid system 3, but the source mode of the electric energy is different for the load system 4, namely the electric energy required by the power grid system 3 is provided when the electric energy is in a peak, the electric energy is not provided by the power consumption peak, the solar cell system 1 is additionally required by the solar cell module, the solar cell module cannot be converted into the electric energy for the solar cell module 1 because the solar cell module is additionally required to be the solar cell module 1, and the solar energy can not be converted into the solar energy for the solar cell module.
In the present application, the load system 4 has a full load state in which the required electric energy is greater than the electric energy provided by the grid system 3, and the solar cell module 1 is required to supplement the electric energy; the load system 4 is in a full load state, the solar cell module 1 has a first power generation state, a second power generation state and a third power generation state, the power generated by the solar cell module 1 is in the first power generation state, the power generated by the solar cell module 1 is respectively transmitted to the energy storage component group 2 and the load system 4, and the power transmitted to the energy storage component group 2 is more than the power transmitted to the load system 4, wherein the solar cell module 1 is in the first power generation state, namely, the weather condition is better, the sunlight is sufficient, more power is generated at the solar cell module 1, the difference value of the power grid system 3 can be complemented, and meanwhile, redundant power can be generated, and the redundant power can be transmitted to the energy storage component group 2 for storage for later use.
When the solar cell module 1 is in the second power generation state, the electric energy generated by the solar cell module 1 is respectively transmitted to the energy storage component group 2 and the load system 4, meanwhile, the electric energy in the power grid system 3 is transmitted to the load system 4, and the electric energy transmitted by the solar cell module 1 to the energy storage component group 2 is less than the electric energy transmitted by the load system 4, wherein the electric energy transmitted by the solar cell module 1 to the energy storage component group 2 in the first power generation state is more than the electric energy transmitted by the solar cell module 1 to the energy storage component group 2 in the second power generation state; when the solar cell is in the second power generation state, sunlight is relatively weaker than that in the first power generation state, but generated electric energy still can meet the shortage of the load system 4, so that the electric energy generated by the solar cell module 1 can still be transmitted to the energy storage element group 2 for storage after meeting the requirement of the load system 4, but compared with that in the first power generation state, because the generated electric energy is insufficient, the residual electric energy is also less after meeting the requirement of the load system 4, and therefore, the electric energy transmitted to the energy storage element group 2 by the solar cell module 1 in the first power generation state is less than that transmitted to the energy storage element group 2.
When the solar cell module 1 is in the third power generation state, the electric energy generated by the solar cell module 1, the energy storage element group 2 and the electric energy in the power grid system 3 are all transmitted to the load system 4; when the weather is poor and the sunlight is insufficient or no sunlight exists at night, if the load system 4 is in a full load state, the electric energy generated by the solar cell module 1 cannot meet the difference value of the load system 4, the electric energy generated by the solar cell module 1 can be completely transmitted to the load system 4, and meanwhile, when the sunlight is sufficient, the electric energy stored in the energy storage element group 2 can be released, so that the electric energy required by the load system 4 is met; it can be understood that when the solar cell module 1 is in the third power generation state, that is, the situation that the solar cell module 1 generates less electric energy or cannot generate electric energy, and when the solar cell module 1 cannot generate electric energy, the electric energy delivered to the load system 4 by the solar cell module 1 is zero, and the electric energy required by the load system 4 is completely provided by the power grid system 3 and the energy storage member group 2.
Based on this, through solar module 1 and load system 4 in this application, can be to different weather conditions and different time quantum in, solar module 1 has different generated energy, thereby according to solar module 1 and load system 4's actual demand, make the electric energy in solar module 1 can realize reasonable distribution, thereby can satisfy load system 4's demand, also can store when solar module 1 produces more electric energy simultaneously, in order to in time can supplement through energy storage group 2 when solar module 1 produces the electric energy inadequately, not only can make and realize better compatibility between solar module 1 and the electric wire netting system 3, simultaneously also can satisfy load system 4's power consumption demand under the full load state, and then realized the compatibility in energy storage group 2 and the electric wire netting system 3, make electric wire netting system 3 can in time supplement through the electric energy that stores in energy storage group 2 when can's the electric energy that can't satisfy load system 4 is in the full load state required.
In the present application, the energy storage element group 2 includes a first energy storage element 21 and a second energy storage element 22 with a storage capacity greater than that of the first energy storage element 21, the solar cell module 1 is in a first power generation state, and the electric energy at the solar cell module 1 is transmitted to the second energy storage element 22 via the first energy storage element 21; in the third power generation state of the solar cell module 1, the electric energy in the second energy storage element 22 is transmitted to the load system 4; through setting up first energy storage 21 and second energy storage 22 in the energy storage piece group 2, and the electric quantity of both is different, when solar module 1 is in under the first power generation state, namely the electric energy that solar module 1 department produced can be sent to the energy storage piece group 2 and store, and in the in-process of storing, at first carry the electric energy to the first energy storage 21 department that the electric quantity is less, when first energy storage 21 department stores certain electric energy, carry the electric energy of first energy storage 21 to second energy storage 22 department again, thereby avoid first energy storage 21 to be in empty or full load state, in order to improve the life of first energy storage 21, and when needs energy storage group 2 to carry out the replenishment of electric energy for load system 4, then can discharge through second energy storage 22, because second energy storage 22 department is great, consequently make second energy storage 22 carry out the discharge, can reduce the probability that the energy storage was overdischarged, can improve the life of energy storage piece group 2 equally.
In this application, the first energy storage element 21 and the second energy storage element 22 in the energy storage element set 2 can both store and release electric energy, so that the first energy storage element 21 and the second energy storage element 22 can be selected as a storage battery or a capacitor, and specific connection modes and charge and discharge processes can refer to the prior art, which is not repeated here.
It can be appreciated that, since the solar cell module 1 can supplement the energy of the energy storage element group 2 in the first power generation state and the second power generation state, and the energy storage element group 2 only can discharge when the power grid system 3 cannot meet the requirement of the load system 4, the energy storage element group 1 can ensure that the electric quantity in the second energy storage element 22 is redundant to the electric quantity in the first energy storage element 21 when the energy storage element group 2 discharges, and the electric energy in the energy storage element group 2 can be conveyed to the power grid system 3 when the energy storage elements in the energy storage element group 2 are in the full load state, thereby meeting the requirements of other loads.
When the electric energy is transferred from the first energy storage element 21 to the second energy storage element 22, the electric energy in the first energy storage element 21 can reach 50% of the full load state, and then the electric energy in the first energy storage element 21 is transferred to the second energy storage element 22, so that the first energy storage element 21 can be prevented from being in a state with less electric quantity or more electric quantity when discharging.
As a preferred embodiment in the present application, the solar cell module 1 is in the first power generation state, and the conveying speed of the solar cell module 1 to the first energy storage member 21 is smaller than the conveying speed of the first energy storage member 21 to the second energy storage member 22; in the second power generation state of the solar cell module 1, the conveying speed of the solar cell module 1 to the first energy storage element 21 is greater than the conveying speed of the first energy storage element 21 to the second energy storage element 22; because the electric energy in the first energy storage element 21 is supplied to the second energy storage element 22 and then discharged after the electric energy in the first energy storage element 21 is supplied to a certain extent, the transmission speed of the solar cell module 1 to the first energy storage element 21 is smaller than the transmission speed of the first energy storage element 21 to the second energy storage element 22, so that the electric energy stored in the first energy storage element 21 can be ensured to be transmitted, an empty load state is formed in the first energy storage element 21, meanwhile, in the first power generation state, the electric energy at the position where the solar cell module 1 is transmitted to the first energy storage element 21 is also more, the first energy storage element 21 can be prevented from being in the full load state, and the solar cell module 1 can be in the first power generation state, namely, the time with sufficient illumination is realized, for example, in noon, and the duration is shorter.
While in the second power generation state of the solar cell module 1, the conveying speed of the solar cell module 1 to the first energy storage element 21 is greater than the conveying speed of the first energy storage element 21 to the second energy storage element 22; at this time, the surplus electric energy in the solar cell module 1 is relatively small, so that the increasing speed of the electric energy in the first energy storage element 21 is relatively slow when the electric energy in the first energy storage element 21 is replenished, and similarly, when the electric energy in the first energy storage element 21 reaches 50% of the full load state, the electric energy in the first energy storage element 21 is transferred to the second energy storage element 22, and since the electric energy transferred to the first energy storage element 21 by the solar cell module 1 is relatively small, even if the transferring speed of the electric energy transferred to the first energy storage element 21 by the solar cell module 1 is larger than the transferring speed of the electric energy transferred to the second energy storage element 22 by the first energy storage element 21, the first energy storage element 21 can be prevented from reaching the full load state quickly.
In this application, since the second energy storage member 22 is only discharged when the solar cell module 1 is in the third power generation state and the load system 4 is in the full load system, the duration of power transmission at the second energy storage member 22 will be relatively short, so that in the state where the first energy storage member 21 is performing power transmission for the second energy storage member 22, it can be ensured that the power at the second energy storage member 22 will be faster than the first energy storage member 21 to reach the full load state, and when the second energy storage member 22 is in the full load state, the redundant power will be transmitted to the power grid system 3.
In the application, the electric energy transmitted from the solar cell module 1 to the load system 4 in the first power generation state is the same as the electric energy transmitted from the solar cell module 1 to the load system 4 in the second power generation state, and when the load system 4 is in the full load state, the difference value between the electric energy transmitted from the power grid system 3 and the electric energy required by the load system 4 is relatively fixed, so that when the electric energy is transmitted from the solar cell module 1, the surplus electric energy is stored after the electric energy is firstly required by the load system 4, so that the load system 4 can work normally.
In the first power generation state of the solar cell module 1, the electric energy in the energy storage element group 2 can be transmitted to the power grid system 3; because the solar cell module 1 is in the first power generation state, the generated electric energy in the solar cell module 1 is relatively more, so that the electric energy which can be transmitted to the energy storage element group 2 is also relatively more, when the energy storage element group 2 reaches the full load state, in order to avoid the long-time full load state in the energy storage element group 2, the electric energy in the energy storage element group 2 can be transmitted to the power grid system 3, so that the utilization of the redundant electric energy is realized; in this case, the electrical energy in the energy storage system 2 can be supplied to the grid system 3, if appropriate, with an inverter (not shown) in the transmission, in order to change the current form.
In the application, the load system 4 also has an idle state in which the required electric energy is smaller than the electric energy provided by the power grid system 3, and the load system 4 is in the idle state, so that the electric energy generated by the solar cell module 1 is transmitted to the energy storage element group 2; when the load system 4 is in the idle state, the power grid system 3 can meet the power demand of the load system 4, so that the solar cell module 1 does not need to provide power to the load system 4 after generating electric energy, and can be fully conveyed to the energy storage part group 2 for storage.
The energy storage element group 2 comprises a first energy storage element 21 and a second energy storage element 22 with the electric quantity larger than that of the first energy storage element 21, and the conveying speed of the solar cell module 1 to the first energy storage element 21 is the same as the conveying speed of the first energy storage element 21 to the second energy storage element 22 when the load system 4 is in an idle state; when the load system 4 is in an idle state and the energy storage component group 2 is fully loaded, the electric energy generated by the solar cell module 1 is transmitted to the power grid system 3; when the load system 4 is in an idle state, the electric energy generated by the solar cell module 1 is also firstly transmitted to the first energy storage element 21, then the electric energy is transmitted to the second energy storage element 22 through the first energy storage element 21, and after a certain amount of electric energy is stored in the first energy storage element 21, the electric energy is transmitted again, at this time, the transmission speed of the electric energy transmitted by the solar cell module 1 to the first energy storage element 21 is the same as the transmission speed of the electric energy transmitted by the first energy storage element 21 to the second energy storage element 22, so that the second energy storage element 22 can be ensured to reach a full load state at first, and the electric energy in the second energy storage element 22 can be transmitted to the power grid system 3, so that redundant electric energy can be transmitted to other loads through the power grid system 3 for use, and the waste of the electric energy is avoided.
In the present application, the load system 4 includes a charging frame 41 formed with a charging space and a top plate 42 provided at a top end of the charging frame 41, the solar cell module 1 is provided at the top plate 42, the charging frame 41 includes a beam 43 located at an upper side of the charging space, and the energy storage member group 2 is provided at the beam 43; the photovoltaic power generation energy storage compatible system in this application is applied to the charging of vehicle, the load just charges required electric energy for the vehicle, through setting up charging frame body 41 in order to form the space of charging, thereby can satisfy the parking of vehicle, and the vehicle is located charging frame body 41, also can avoid the vehicle to stop and receive the interference of weather in the open air, wherein, solar module 1 is located roof 42 department, thereby can receive sunlight better and realize electricity generation, charging frame body 41 department is provided with the crossbeam 43 that is located the space upside that charges simultaneously, energy storage group 2 sets up in crossbeam 43 department, consequently charging frame body 41 can protect energy storage group 2 equally, make it avoid the interference that the sun-drying drenches, thereby improve the stability when energy storage group 2 uses, and energy storage group 2 and load system 4 integrate in same department setting, compatibility between load system 4 and the energy storage group 2 also can improve.
It can be understood that the setting and installation of the inverter 5 and the power grid system 3 in the present application can refer to the manner of charging the vehicle in the prior art, and will not be described herein.
As a preferred embodiment in the present application, the top plate 42 has a hinge end provided to be hinged with the charging frame 41 and a movable end provided opposite to the hinge end, at which a slide rod 44 is provided to be reciprocally movable in the vertical direction with respect to the charging frame 41; the top plate 42 can move in the vertical direction relative to the charging frame 41 through the sliding rod 44, and in the moving process, the hinged end can rotate around the charging frame 41, so that the angle of the solar cell module 1 at the top plate 42 is driven to change, the solar cell module 1 can better correspond to sunlight, and a better charging effect is obtained.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (10)
1. The photovoltaic power generation and energy storage compatible system is characterized by comprising a solar cell assembly formed by a plurality of solar cells, an energy storage component group, a power grid system and a load system, wherein the energy storage component group, the power grid system and the load system are respectively communicated with the solar cell assembly through inverters, and electric energy generated in the solar cell assembly can be transmitted to one or more parts of the energy storage component group, the power grid system and the load system, and the load system has a full-load state that the required electric energy is larger than the electric energy provided by the power grid system;
the load system is in a full load state, the solar cell module is in a first power generation state, a second power generation state and a third power generation state, the power generated by the solar cell module is respectively transmitted to the energy storage part group and the load system in the first power generation state, and the power transmitted to the energy storage part group is more than the power transmitted to the load system; the solar cell module is in a second power generation state, electric energy generated by the solar cell module is respectively transmitted to the energy storage component group and the load system, meanwhile, electric energy in the power grid system is transmitted to the load system, and electric energy transmitted to the energy storage component group by the solar cell module is less than electric energy transmitted to the load system, wherein electric energy transmitted to the energy storage component group by the solar cell module in a first power generation state is more than electric energy transmitted to the energy storage component group by the solar cell module in a second power generation state; and the solar cell module is in a third power generation state, and the electric energy generated by the solar cell module, the energy storage piece group and the electric energy in the power grid system are all transmitted to the load system.
2. The photovoltaic power generation and energy storage compatible system according to claim 1, wherein the energy storage component group comprises a first energy storage component and a second energy storage component with a larger storage capacity than the first energy storage component, the solar cell module is in a first power generation state, and electric energy at the solar cell module is transmitted to the second energy storage component through the first energy storage component; and the solar cell module is in a third power generation state, and the electric energy in the second energy storage piece is transmitted to the load system.
3. The photovoltaic power generation and energy storage compatible system of claim 2 wherein the solar cell module is in a first power generation state and the transport speed of the solar cell module to the first energy storage element is less than the transport speed of the first energy storage element to the second energy storage element; and the conveying speed of the solar cell module to the first energy storage piece is greater than the conveying speed of the first energy storage piece to the second energy storage piece when the solar cell module is in the second power generation state.
4. The photovoltaic power generation and energy storage compatible system of claim 1 wherein the electrical energy delivered by the solar module to the load system in the first power generation state is the same as the electrical energy delivered by the solar module to the load system in the second power generation state.
5. The photovoltaic power generation and energy storage compatible system of claim 1 wherein the solar cell module is in a first power generation state and electrical energy in the energy storage pack is capable of being delivered to the grid system.
6. The photovoltaic power generation and energy storage compatible system of claim 1 wherein the load system further has an idle state in which the power demand is less than the power supplied by the grid system, the load system being in the idle state, the power generated by the solar module being delivered to the energy storage bank.
7. The photovoltaic power generation and energy storage compatible system according to claim 6, wherein the energy storage component group comprises a first energy storage component and a second energy storage component with a larger electric quantity than the first energy storage component, and the load system is in an idle state, and a conveying speed of the solar cell module to the first energy storage component is the same as a conveying speed of the first energy storage component to the second energy storage component.
8. The photovoltaic power generation and energy storage compatible system of claim 6 wherein the load system is in an idle state and electrical energy generated at the solar module is delivered to the grid system when the energy storage pack is fully loaded.
9. The photovoltaic power generation and energy storage compatible system according to claim 1, wherein the load system comprises a charging frame body formed with a charging space and a top plate arranged at the top end of the charging frame body, the solar cell module is arranged at the top plate, the charging frame body comprises a beam positioned at the upper side of the charging space, and the energy storage component group is arranged at the beam.
10. The photovoltaic power generation and energy storage compatible system according to claim 9, wherein the top plate has a hinge end hinged to the charging frame body and a movable end opposite to the hinge end, and a sliding rod capable of moving back and forth in a vertical direction relative to the charging frame body is provided at the movable end.
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