CN117411160B - Energy storage power supply system, method and energy storage system - Google Patents
Energy storage power supply system, method and energy storage system Download PDFInfo
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- CN117411160B CN117411160B CN202311716515.7A CN202311716515A CN117411160B CN 117411160 B CN117411160 B CN 117411160B CN 202311716515 A CN202311716515 A CN 202311716515A CN 117411160 B CN117411160 B CN 117411160B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 121
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000010248 power generation Methods 0.000 claims abstract description 98
- 238000005286 illumination Methods 0.000 claims abstract description 65
- 238000001514 detection method Methods 0.000 claims abstract description 23
- 239000003990 capacitor Substances 0.000 claims description 32
- 239000002699 waste material Substances 0.000 abstract description 4
- 230000006870 function Effects 0.000 description 12
- 230000005611 electricity Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 206010070834 Sensitisation Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 210000000352 storage cell Anatomy 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
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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
- H02J15/00—Systems for storing electric energy
-
- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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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
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
-
- 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application provides an energy storage power supply system, an energy storage power supply method and an energy storage system. The energy storage power supply system comprises a switching power supply, a turn-off transmitter, a photosensitive detection assembly and a power supply assembly; the switching power supply is used for connecting the new energy power generation assembly and the shutdown transmitter and supplying power to the shutdown transmitter; the power supply assembly is used for connecting the photosensitive detection assembly and the turn-off transmitter, and is used for acquiring illumination intensity from the photosensitive detection assembly and switching on or off power supply to the turn-off transmitter according to the illumination intensity; the turn-off transmitter is used for controlling the new energy power generation assembly to generate power in an electrified state or controlling the new energy power generation assembly to turn off power generation in a power-losing state. Therefore, in the state that the new energy power generation assembly and the energy storage battery cannot supply power, the power supply assembly can be controlled to supply power for the turn-off transmitter according to the illumination intensity, normal work of the turn-off transmitter can be guaranteed, and energy waste can be effectively avoided.
Description
Technical Field
The application relates to the technical field of energy power generation, in particular to an energy storage and power supply system, an energy storage and power supply method and an energy storage system.
Background
Along with the continuous development of new energy technology, photovoltaic power generation technology is also widely applied, and current output by a photovoltaic module in a photovoltaic system can be transmitted to a power grid so as to meet the power consumption requirements of various devices in the power grid. In order to ensure the power supply safety, a corresponding shutoff device is usually arranged for the photovoltaic module, so that the shutoff device can timely disconnect the photovoltaic power grid when a safety fault occurs; or when grid-connected power generation is needed, the shutoff device can be used for switching on the photovoltaic power grid in time so as to improve the safety of the photovoltaic system.
However, the photovoltaic system will not be able to maintain the power generation function when the photovoltaic module loses power or the grid fails. Especially in continuous rainy days, because lack illumination, photovoltaic module can't generate electricity, if the electric quantity of electric wire netting power is not enough or the electric wire netting lacks, under this kind of circumstances, the control signal that the shutoff ware received photovoltaic module and sent then can initiatively turn off, leads to the unable steady operation of photovoltaic system.
Disclosure of Invention
The application provides an energy storage power supply system, an energy storage power supply method and an energy storage system, which aim to solve the problem of how to ensure continuous power supply in an energy storage system so as to avoid interruption of monitoring of a cloud platform.
In a first aspect, an embodiment of the present application provides an energy storage power supply system, including: the device comprises a switching power supply, a turn-off transmitter, a photosensitive detection assembly and a power supply assembly; the first input end of the switching power supply is used for being connected with the power generation assembly, and the first output end of the switching power supply is connected with the turn-off transmitter and used for supplying power to the turn-off transmitter; the first input end of the power supply assembly is connected with the photosensitive detection assembly, the output end of the power supply assembly is connected with the turn-off transmitter and is used for acquiring illumination intensity from the photosensitive detection assembly and turning on or turning off power supply to the turn-off transmitter according to the illumination intensity; and the turn-off transmitter is used for controlling the power generation assembly to generate power in an electrified state or controlling the power generation assembly to turn off to generate power in a power-losing state.
In a possible implementation manner, the power supply assembly further comprises a second input terminal; the switching power supply further comprises a second output end; and the second output end of the switching power supply is connected with the second input end of the power supply assembly and is used for charging the power supply assembly.
In a possible implementation manner, the energy storage and power supply system further comprises a first diode and a second diode; the first output end of the switching power supply is connected with the positive electrode of the first diode, and the negative electrode of the first diode is connected with the turn-off transmitter; the output end of the power supply assembly is connected with the positive electrode of the second diode, and the negative electrode of the second diode is connected with the turn-off transmitter.
In one possible implementation, the energy storage power supply system further includes a boost circuit, a buck/boost circuit, and a first capacitor; the input end of the boost circuit is used for being connected with the power generation assembly, and the output end of the boost circuit is connected with the first input end of the switching power supply; the input end of the buck/boost circuit is used for being connected with an energy storage battery, the first output end of the buck/boost circuit is connected with the first input end of the switching power supply, the second output end of the buck/boost circuit is connected with one end of the first capacitor and the second input end of the switching power supply, and the other end of the first capacitor is connected with the first input end of the switching power supply.
In a possible implementation, the switching power supply is also used for connecting to the power grid.
In a possible implementation manner, the energy storage power supply system further comprises a rectifier bridge; and the switching power supply is connected with the power grid through the rectifier bridge.
In a possible implementation manner, the energy storage power supply system further comprises a first normally closed relay, a second capacitor and a control circuit; the input end of the rectifier bridge is used for being connected with the power grid, the first output end of the rectifier bridge is connected with a first switch contact of the first normally-closed relay, and a second switch contact of the first normally-closed relay is connected with the first input end of the switch power supply and one end of the second capacitor; the second output end of the rectifier bridge is connected with the first switch contact of the second normally closed relay, and the second switch contact of the second normally closed relay is connected with the second input end of the switching power supply and the other end of the second capacitor; the input end of the control circuit is connected with the third output end of the switching power supply, the first output end of the control circuit is connected with the control contact of the first normally closed relay, and the second output end of the control circuit is connected with the control contact of the second normally closed relay.
In a possible implementation manner, the energy storage and power supply system further comprises a third diode and a fourth diode; the positive electrode of the third diode is connected with the second switch contact of the first normally-closed relay, and the negative electrode of the third diode is connected with one end of the second capacitor and the first input end of the switch power supply; and the cathode of the fourth diode is connected with a second switch contact of the second normally-closed relay, and the anode of the fourth diode is connected with the other end of the second capacitor and the second input end of the switch power supply.
In a possible implementation manner, the energy storage power supply system further comprises a first power interface, a second power interface and a third power interface; the input end of the first power interface is used for being connected with the power generation assembly, and the output end of the first power interface is connected with the input end of the booster circuit; the input end of the second power interface is used for being connected with the energy storage battery, and the output end of the second power interface is used for being connected with the input end of the buck/boost circuit; the input end of the third power interface is used for being connected with the power grid, and the output end of the third power interface is connected with the input end of the rectifier bridge.
In a second aspect, an embodiment of the present application provides an energy storage system, where the energy storage system includes a load and the energy storage power supply system in the foregoing embodiment, and the energy storage power supply system is configured to supply power to the load.
In a third aspect, an embodiment of the present application provides an energy storage and power supply method applied to the energy storage and power supply system, where the method includes: acquiring electric energy from the power generation assembly through the switching power supply to supply power for the shutdown transmitter; acquiring illumination intensity from the photosensitive detection assembly through the power supply assembly, and starting power supply or closing power supply to the turn-off transmitter according to the illumination intensity; and if the shutdown transmitter is in an electrified state, controlling the power generation assembly to generate power through the shutdown transmitter, or if the shutdown transmitter is in a power failure state, controlling the power generation assembly to shut down power generation through the shutdown transmitter.
In summary, the energy storage power supply system, the energy storage battery and the energy storage system provided by the embodiment of the application can start the power supply assembly to supply power for the turn-off transmitter in the state that the power generation assembly, the energy storage battery and the power grid cannot supply power for the turn-off transmitter, and can control the power supply time of the power supply assembly according to the illumination intensity, so that energy waste can be effectively avoided; further, after the direct-current power generation power supply and/or the energy storage battery are restored to work, the power supply assembly can be charged, so that the recycling of energy sources is realized, and the service life of the power supply assembly is prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an energy storage and power supply system according to an embodiment of the present application;
Reference numerals illustrate:
101-switching power supply: 01 a-first input, 01b first output, 01 c-second output, 01 d-second input, 01 e-third output;
102-turn off the transmitter;
103-a photosensitive detection component;
104-power supply component: 04 a-a first input, 04b output, 04c second input;
105-a power generation assembly;
106-boost circuit: 06a input, 06b output;
107-energy storage battery: 07 a-discharge port, 07b charge port;
108-buck/boost circuit: 08a output end (08 d-booster circuit input port, 08 e-step-down circuit input port), 08 b-first output end, 08 c-second output end;
109-grid;
110-rectifier bridge: 10 a-output, 10b first output, 10 c-second output;
111-control circuit: 11 a-input, 11 b-first output, 11c second output;
d1-a first diode, D2-a second diode, D3-a third diode and D4-a fourth diode;
c1—first capacitance: one end of the c 11-first capacitor, the other end of the c 12-first capacitor;
c2-second capacitance: one end of the c 21-second capacitor, the other end of the c 22-second capacitor;
A1—first normally closed relay: a-a first switch contact, b-a second switch contact, e-control contact;
A2—second normally closed relay: c-first switch contact, d-second switch contact, f-control contact.
Fig. 2 is a flowchart of an energy storage and power supply method according to an embodiment of the present application.
Detailed Description
The application is further described in detail below by means of the figures and examples. The features and advantages of the present application will become more apparent from the description.
The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
In addition, the technical features described below in the different embodiments of the present application may be combined with each other as long as they do not collide with each other.
Before introducing the energy storage power supply system provided by the embodiment of the application, the energy storage power supply system provided by the embodiment of the application is firstly described as a photovoltaic energy storage power supply system or a wind energy storage power supply system, and the energy storage power supply system is not limited to the photovoltaic energy storage power supply system or the wind energy storage power supply system, and can be also used as other types of energy storage power supply systems, and can be specifically determined according to actual requirements. In the embodiment of the application, a photovoltaic energy storage power supply system is taken as an example to exemplarily illustrate the structure and the function of the energy storage power supply system, and correspondingly, the adopted power generation component can be a photovoltaic component.
In general, in the use scene of the photovoltaic module, a shutoff device is installed on a circuit where the photovoltaic module is located and is used for controlling the on-off of the circuit where the photovoltaic module is located so as to ensure the safety of the circuit under extreme conditions. For example, when the photovoltaic power station is in emergency such as fire, the operation and maintenance personnel or firefighters only need to start the shutoff device, and the connection between each photovoltaic module can be rapidly disconnected in a short time, so that direct-current high-voltage electricity existing in the photovoltaic module array is eliminated, the personal safety of the firefighters is ensured, the photovoltaic power station can be maintained in time, and the property loss is reduced to the greatest extent.
The shutdown device comprises a shutdown transmitter and a shutdown receiver, wherein the shutdown transmitter is used for continuously transmitting signals to the photovoltaic module in an electrified state, the shutdown receiver is used for monitoring whether the photovoltaic module receives the signals transmitted by the shutdown transmitter or not, and a circuit where the photovoltaic module is located is rapidly disconnected under the condition that the photovoltaic module does not receive the signals is detected. Therefore, to ensure that the shutdown device is functioning properly, it is necessary to continuously power the shutdown transmitter. However, in a rainy day, a photovoltaic module cannot generate electricity, a power grid is lost, and the like, the shutdown transmitter may not obtain electric energy, so that the shutdown control function cannot be realized.
Therefore, the embodiment of the application provides the energy storage power supply system which can provide a function similar to a standby power supply, and can ensure that the turn-off control function works normally by supplying power to the turn-off transmitter through the standby power supply under the condition of extreme weather or electric energy loss.
Fig. 1 is a schematic structural diagram of an energy storage power supply system according to an embodiment of the present application, as shown in fig. 1, in one possible implementation manner, the energy storage power supply system 100 may include a switching power supply 101, a shutdown transmitter 102, a photosensitive detection component 103, and a power supply component 104, where a first input end 01a of the switching power supply 101 is used for connecting to a power generation component 105, such as a photovoltaic power generation component, and a first output end 01b of the switching power supply is connected to the shutdown transmitter 102 and is used for supplying power to the shutdown transmitter 102. The first input end 04a of the power supply assembly 104 is connected with the photosensitive detection assembly 103, the output end 04b of the power supply assembly 104 is connected with the turn-off transmitter 102, and is used for acquiring illumination intensity from the photosensitive detection assembly 103, and turning on or turning off power supply to the turn-off transmitter 102 according to the illumination intensity, so that energy waste can be effectively avoided; the turn-off transmitter 102 is used for controlling the power generation assembly 105 to generate power in an energized state or controlling the power generation assembly 105 to turn off power generation in a power-off state.
In a possible implementation manner, as shown in fig. 1, the power supply assembly 104 further includes a second input end 04c, and the switching power supply 101 further includes a second output end 01c, where the second output end 10c of the switching power supply 101 is connected to the second input end 04c of the power supply assembly 104, so that in a state where the energy storage power supply system 100 works normally, the power supply assembly 104 can be charged through the switching power supply 101, so that energy recycling is realized, and the service life of the power supply assembly is prolonged.
In a possible implementation manner, as shown in fig. 1, the energy storage and power supply system 100 further includes a first diode D1 and a second diode D2, where a first output terminal 01b of the switching power supply 101 is connected to an anode of the first diode D1, and a cathode of the first diode D1 is connected to a shutdown transmitter 102; the output 04b of the power supply assembly 104 is connected to the anode of the second diode D2, and the cathode of the second diode D2 is connected to the off transmitter 102. In this way, the off transmitter 102 may select one of them to power itself according to the voltage values respectively corresponding to the first diode D1 and the second diode D2. In general, in a state in which the energy storage power supply system 100 is operating normally, the power supply component 104 is turned off to turn off the power supply function of the transmitter 102, the voltage value of the second diode D2 is higher than the voltage value of the first diode D1, and in a state in which the energy storage power supply system 100 cannot operate normally, the power supply component 104 is turned on to turn off the power supply function of the transmitter 102, the voltage value of the first diode D1 is higher than the voltage value of the second diode D2. Thus, it may be achieved that the power supply assembly 104 is used to power the off transmitter 102 in a state where the stored energy power system 100 is not operating properly.
In one possible implementation, as shown in fig. 1, the energy storage power supply system 100 further includes a boost circuit 106, a buck/boost circuit 108, and a first capacitor C1; the input terminal 06a of the boost circuit 106 is used for connecting the power generation component 105, and the output terminal 06b of the boost circuit 106 is connected to the first input terminal 01a of the switching power supply 101, that is, the power generation component 105 is connected to the first input terminal 01a of the switching power supply 101 through the boost circuit 106. As shown in fig. 1, the input 08a of the buck/boost circuit 108 is used for connecting the energy storage battery 107, the first output 08b of the buck/boost circuit 108 is connected to the first input 01a of the switching power supply 101, the second output 08C of the buck/boost circuit 108 is connected to one end C11 of the first capacitor C1 and the second input 01d of the switching power supply 101, and the other end C12 of the first capacitor C1 is connected to the first input 01a of the switching power supply 101. It can be seen that the output of the boost circuit 106, the first output 08b of the buck/boost circuit 108, the other end C12 of the first capacitor C1, the first input 01a of the switching power supply 101 are equipotential. The second output 08C of the buck/boost circuit 108, one end C11 of the first capacitor C1 are equipotential with the second input 01d of the switching power supply 101.
Alternatively, the energy storage battery 107 may be a high-voltage battery pack, and as shown in fig. 1, the output terminal of the energy storage battery 107 may include a discharge port 07a and a charge port 07b, and the input terminal 08a of the buck/boost circuit 105 may include a boost circuit input port 08d and a buck circuit input port 08e. The discharge port 07a of the energy storage cell 107 is connected to the boost circuit input port 08d of the buck/boost circuit 108, and is thus connected to the boost circuit of the buck/boost circuit 108, and outputs power to the switching power supply 101. The charging port 07b of the energy storage battery 107 is connected to the step-down circuit input port 08e of the step-down/step-up circuit 108, and thus connected to the step-down circuit of the step-down/step-up circuit 108, to charge the energy storage battery 107.
In a possible implementation, as shown in fig. 1, the switching power supply 101 is also used to connect to the power grid 109; optionally, the energy storage power supply system 100 further comprises a rectifier bridge 110, and the switching power supply 101 may be connected to the power grid 109 through the rectifier bridge 110.
In a possible implementation, as shown in fig. 1, the energy storage and power supply system 100 further includes a first normally closed relay A1, a second normally closed relay A2, a second capacitor C2, and a control circuit 111; the input end 10a of the rectifier bridge 110 is used for connecting with the power grid 109, the first output end 10b of the rectifier bridge 110 is connected with the first switch contact a of the first normally closed relay A1, and the second switch contact b of the first normally closed relay A1 is connected with the first input end 01a of the switch power supply 101 and one end C21 of the second capacitor C2; that is, one end C21 of the second capacitor C2 is connected to or disconnected from the first output terminal 10b of the rectifier bridge 110 through the first normally-closed relay A1. The second output end 10C of the rectifier bridge 110 is connected with the first switch contact C of the second normally closed relay A2, and the second switch contact d of the second normally closed relay A2 is connected with the second input end 01d of the switching power supply 101 and the other end C22 of the second capacitor C2; that is, the second output terminal 10c of the rectifier bridge 110 is connected to or disconnected from the second input terminal 01d of the switching power supply 101 through the second normally closed relay A2; the other end C22 of the second capacitor C2 is connected to or disconnected from the second output terminal 10C of the rectifier bridge 110 through the second normally closed relay A2.
As shown in fig. 1, an input terminal 11a of the control circuit 111 is connected to a third output terminal 01e of the switching power supply 101, a first output terminal 11b of the control circuit 111 is connected to a control contact e of the first normally closed relay A1, and a second output terminal 11c of the control circuit 11 is connected to a control contact f of the second normally closed relay A2. That is, the switching power supply 101 may supply power to the control circuit 111, and when the switching power supply 101 supplies power to the control circuit 111, the control circuit 111 may control the first normally-closed relay A1 and the second normally-closed relay A2 to be opened, so that a loop between the power grid 109 and the switching power supply 101 is in an open state, and the power grid 109 may not output power for the switching power supply 101. When the switching power supply 101 cannot provide power for the control circuit 111, the control circuit 111 cannot control the first normally-closed relay A1 and the second normally-closed relay A2 to be opened, and then the first normally-closed relay A1 and the second normally-closed relay A2 are both in a closed state, and then the power grid 109 is communicated with the loop of the switching power supply 101 to supply power to the switching power supply 101 through the power grid 109.
In one possible implementation, as shown in fig. 1, the energy storage and power supply system 100 further includes a third diode D3 and a fourth diode D4; the positive electrode of the third diode D3 is connected with the second switch contact b of the first normally-closed relay A1, and the negative electrode of the third diode D3 is connected with one end C21 of the second capacitor C2 and the first input end 01a of the switch power supply 101; that is, the anode of the third diode D3 is connected to or disconnected from the first output terminal 10b of the rectifier bridge 110 through the first normally-closed relay A1. The cathode of the fourth diode D4 is connected with the second switch contact D of the second normally-closed relay A2, and the anode of the fourth diode D4 is connected with the other end C22 of the second capacitor C2 and the second input end 01D of the switch power supply 101; that is, the cathode of the fourth diode D4 is connected to or disconnected from the second output terminal 10c of the rectifier bridge 110 through the second normally-closed relay A2.
In a possible implementation manner, the energy storage power supply system 100 further includes a first power interface, a second power interface, and a third power interface; the input end of the first power interface is used for being connected with the power generation assembly 105, and the output end of the first power interface is connected with the input end 06a of the boost circuit 106; the input end of the second power interface is used for connecting the energy storage battery 107, and the output end of the second power interface is used for connecting the input end 08a of the buck/boost circuit 108; the input end of the third power interface is used for connecting with the power grid 109, and the output end of the third power interface is connected with the input end 10a of the rectifier bridge 110.
In a possible implementation, the switching power supply 101 may provide power to a load of the energy storage system, optionally, the power may include at least one of: +15v power, -15V power, +7v power.
In one possible implementation, a load interface (not shown in fig. 1) may also be disposed in the stored energy power system 100. The switching power supply 101 may provide power to a load of the energy storage system through a load interface.
In summary, in the energy storage power supply system 100, when the power generation amount of the power generation component 105 is enough to support the power output requirement of the switching power supply 101, the power generation component 105 supplies power to the switching power supply 101, and after the switching power supply 101 is powered on, the control circuit 111 may supply power to the control circuit 111, so that the control circuit 111 controls the first normally-closed relay A1 and the second normally-closed relay A2 to be opened, thereby disconnecting the loop of the power grid 109 for supplying power to the switching power supply 101, and the switching power supply 101 is separately supplied by the power generation component 105, so as to supply power to the shutdown transmitter 102.
When the power generation amount of the power generation assembly 105 is insufficient to support the power output requirement of the switching power supply 101, the energy storage battery 107 is added to power the switching power supply 101, and the power generation assembly 105 and the energy storage battery 107 jointly power the switching power supply 101. In this case, after the switch power supply 101 is powered, the control circuit 111 may supply power, so that the control circuit 111 controls the first normally-closed relay A1 and the second normally-closed relay A2 to be opened, so as to disconnect the loop of the power grid 109 for supplying power to the switch power supply 101, and the switch power supply 101 is jointly powered by the power generation assembly 105 and the energy storage battery 107, so as to supply power for powering off the transmitter 102.
When the power generation module 105 and the energy storage battery 107 together cannot provide the switching power supply 101 with the output power required by the switching power supply 101, the switching power supply 101 cannot supply the control circuit 111 with power. In this case, the control circuit 111 cannot control the first normally-closed relay A1 and the second normally-closed relay A2 to be opened, the first normally-closed relay A1 and the second normally-closed relay A2 are both closed, and a loop between the power grid 109 and the switching power supply 101 is turned on, so that the power grid 109 can be used to supply power to the switching power supply 101, and further power to turn off the transmitter 102. Further, the shutdown transmitter 102 may also be powered by the power supply assembly 104 in the event of a loss or lack of power to the power grid 109.
Therefore, when the electric quantity of the direct-current power generation power supply and the electric quantity of the energy storage battery are enough to support the working and the use of the switching power supply, the energy storage power supply system can supply power for the switching power supply by the direct-current power generation power supply and/or the energy storage battery, so that the power supply for the switching power supply system is realized to cut off the power supply of the transmitter; when the electric quantity of the direct current power generation power supply and the energy storage battery is insufficient to support the normal operation of the switching power supply, the direct current power generation power supply and the energy storage battery can be automatically switched to power supply of a power grid, and then the power supply of a power-off transmitter is realized; and moreover, the power supply switching of a plurality of power supplies can be realized by only setting one switching power supply, the structure is simpler, the equipment cost is lower, the actual application requirements of users are met, and the user experience is better.
Further, when the power grid cannot supply power to the switching power supply, the power supply assembly can be started to supply power to the turn-off transmitter, and the power supply time of the power supply assembly can be controlled according to the illumination intensity, so that energy waste can be effectively avoided; further, after the direct-current power generation power supply and/or the energy storage battery are restored to work, the power supply assembly can be charged, so that the recycling of energy sources is realized, and the service life of the power supply assembly is prolonged.
It is understood that the foregoing embodiments are merely examples, and modifications may be made to the foregoing embodiments in actual implementation, and those skilled in the art may understand that the modified structures of the foregoing embodiments without performing any inventive effort fall within the protection scope of the present application, and are not repeated in the embodiments.
Based on the same conception, the embodiment of the application also provides an energy storage system which can be connected with the energy storage power supply system and is powered by the energy storage power supply system. Because the principle of the problem solved by the energy storage system is similar to that of the energy storage power supply system, the implementation of the energy storage system can be referred to the implementation of the energy storage power supply system, and the repetition is omitted.
The embodiment of the application also provides an energy storage and power supply method, which is applied to the energy storage function system, and fig. 2 is a flow chart of the energy storage and power supply method, as shown in fig. 2, and the method comprises the following steps:
S101, acquiring electric energy from a power generation assembly through a switching power supply to supply power for a shutdown transmitter;
s102, acquiring illumination intensity from a photosensitive detection assembly through a power supply assembly, and switching on or switching off power supply to a turn-off transmitter according to the illumination intensity;
s103, if the shutdown transmitter is in an electrified state, the shutdown transmitter is used for controlling the power generation assembly to generate power, or if the shutdown transmitter is in a power failure state, the shutdown transmitter is used for controlling the power generation assembly to shut down the power generation.
Based on the energy storage function system with the circuit structure shown in fig. 1, the power generation assembly can supply power for the energy storage power supply system, and besides, the power generation assembly can also supply power for the turn-off transmitter through a switching power supply connected with the power generation assembly and the turn-off transmitter respectively. In this embodiment, the shutdown transmitter is in an energized state, the power generation component may be controlled to generate electricity by the shutdown transmitter, or if the shutdown transmitter is in a power-off state, the power generation component may be controlled to shut down the power generation by the shutdown transmitter. For example, in practical application, the power generation component may be connected to the shutoff device, the shutoff transmitter may continuously send a signal to the shutoff device in the power-on state, and the shutoff device is connected to a circuit where the power generation component is located when receiving the signal, so that the power generation component may supply power to the energy storage system; correspondingly, when the turn-off transmitter is in a power-off state, a signal cannot be sent to the turn-off device, and the turn-off device can turn off a circuit where the power generation assembly is located, so that the power generation assembly cannot supply power for the energy storage power supply system.
Based on the above, the turn-off transmitter can indirectly control the turn-on or turn-off of the power generation assembly for supplying power to the energy storage power supply system through the transmission of the control signal, so that it is particularly critical to ensure that the turn-off transmitter is in the power on state at the moment, especially when the energy storage power supply system is in an abnormal state, for example, short circuit, high voltage and the like occur, the turn-off transmitter stops transmitting the signal to control the turn-off of the power generation assembly for generating power, and the circuit safety of the energy storage power supply system is protected. However, in an extreme case, if the power generation component cannot generate power, so that the turn-off transmitter is in a power-off state, the condition that the on-off of the circuit cannot be controlled in time may be caused, and the system function is affected.
It should be noted that, the embodiment of the present application is not limited to a specific manner in which the power generating component and the power supplying component supply power to the off transmitter, and alternatively, the power generating component and the power supplying component may jointly supply power to the off transmitter; or the power supply assembly can be started to supply power for the shutoff transmitter under the condition that the power generation assembly cannot supply power for the shutoff transmitter; or in the normal working state of the power generation assembly, one of the power generation assembly and the power supply assembly is selected to supply power for the shutdown transmitter, for example, the side with high voltage value is selected to supply power for the shutdown transmitter, and the specific mode can be determined according to actual requirements.
In this embodiment, the energy storage power supply method is described by taking a mode that the power supply assembly is started to supply power to the transmitter of the shutoff device under the condition that the power generation assembly cannot supply power to the shutoff device, and it should be noted that the embodiment of the application is not limited to the type of the power generation assembly, alternatively, taking the power generation assembly as a photovoltaic assembly as an example, since the power generation state of the photovoltaic assembly is determined by the illumination intensity, when extreme weather, such as continuous overcast and rainy days, weak illumination intensity, and the like, occurs, the power generation assembly cannot normally generate power. Therefore, in order to realize that the power supply assembly is started to supply power for the shutdown transmitter under the condition that the power generation assembly cannot generate power, the energy storage power supply system is further provided with a photosensitive detection assembly connected with the power supply assembly and used for detecting illumination intensity.
Based on this, the power supply assembly can acquire the illumination intensity that the sensitization detected the subassembly to turn on the power supply or turn off the power supply to turn off the sender according to illumination intensity, in order to realize under the unable condition of electricity generation of power generation assembly, supplement the power supply by power supply assembly, guarantee to turn off the normal work of sender. Optionally, an illumination intensity threshold may be set, for the power supply assembly to turn on or off the power supply to the turn-off transmitter according to the illumination intensity detected by the photosensitive detection assembly and the set illumination intensity threshold. The setting mode of the illumination intensity threshold is not limited, alternatively, only one illumination intensity threshold may be set, and multiple illumination intensity thresholds may also be set, where the specific mode is determined according to actual requirements.
For example, in the case where only one illumination intensity threshold is set, the illumination intensity threshold is used to identify whether the power generation assembly is in a power generation state. Based on the above, when the photosensitive detection component detects that the illumination intensity is smaller than the illumination intensity threshold, the power generation component can not normally generate power, and the power supply component can start power supply to the turn-off transmitter according to the set illumination intensity threshold and the detected illumination intensity; accordingly, when the photosensitive detection component detects that the illumination intensity is larger than the illumination intensity threshold, the power generation component can normally generate power, and the power supply component can close the power supply to the turn-off transmitter according to the set illumination intensity threshold and the detected illumination intensity.
For another example, according to the power supply capability of the power supply assembly and the power generation states of the power generation assembly corresponding to different power generation states under different illumination intensities, a plurality of illumination intensity thresholds may be set, optionally, a first illumination intensity threshold and a second illumination intensity threshold may be set, where the first illumination intensity threshold is used to identify an illumination intensity threshold for the power generation assembly to realize the minimum power generation amount, the second illumination intensity threshold is an illumination intensity threshold for the power generation assembly to identify the power generation assembly to realize the sufficient power generation amount, and when the illumination intensity is greater than the first illumination intensity threshold but less than the second illumination intensity threshold, the power generation assembly can only provide the minimum electric quantity for realizing the system function, but cannot further supply power to the shutdown transmitter; when the illumination intensity is larger than the second illumination intensity threshold value, the power generation assembly can supply power for the energy storage power supply system, and can also supply power for the turn-off transmitter.
Based on the above, when the photosensitive detection component detects that the illumination intensity is greater than the first illumination intensity threshold value but less than the second illumination intensity threshold value, the power generation component can only supply power to the energy storage power supply system, and the power supply component can start power supply to the turn-off transmitter according to the first illumination intensity threshold value and the detected illumination intensity; under the condition that the photosensitive detection component detects that the illumination intensity is greater than the second illumination intensity threshold value, the power generation component can supply power for the turn-off transmitter when supplying power for the energy storage power supply system, and the power supply component can turn off the power supply for the turn-off transmitter according to the second illumination intensity threshold value and the detected illumination intensity. Further optionally, if the power supply assembly is sufficient to provide an amount of power required to implement a system function, if the photosensitive detection assembly detects that the illumination intensity is less than the first illumination intensity threshold, the power supply assembly may further turn on power to the energy storage power supply system according to the first illumination intensity threshold and the detected illumination intensity, in addition to turning on power to the off transmitter.
It should be noted that, the manner of turning on or off the power supply for the power supply assembly in the above embodiment is only illustrative, and is not limited thereto, and may be specifically determined according to actual requirements.
Further, for specific details of each step in the energy storage power supply method and how to control each component in the energy storage power supply system, reference may be made to the description of the corresponding parts in the above system embodiment, which is not repeated herein.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for the energy storage system embodiment, since it is substantially similar to the power supply device embodiment, the description is relatively simple, and reference is made to the section of the power supply device embodiment for relevant points. In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The present application is not limited to any single aspect, nor to any single embodiment, nor to any combination and/or permutation of these aspects and/or embodiments. Moreover, each aspect and/or embodiment of the application may be used alone or in combination with one or more other aspects and/or embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application, and are intended to be included within the scope of the appended claims and description.
The application has been described above in connection with preferred embodiments, which are, however, exemplary only and for illustrative purposes. On this basis, the application can be subjected to various substitutions and improvements, and all fall within the protection scope of the application.
Claims (10)
1. An energy storage and power supply system, comprising:
The device comprises a switching power supply, a turn-off transmitter, a photosensitive detection component, a first diode, a second diode, a power supply component and a power generation component;
the first input end of the switching power supply is used for being connected with the power generation assembly, and the first output end of the switching power supply is connected with the turn-off transmitter and used for supplying power to the turn-off transmitter;
The first input end of the power supply assembly is connected with the photosensitive detection assembly, the output end of the power supply assembly is connected with the turn-off transmitter and is used for acquiring illumination intensity from the photosensitive detection assembly and turning on or turning off power supply to the turn-off transmitter according to the illumination intensity;
The first output end of the switching power supply is connected with the positive electrode of the first diode, and the negative electrode of the first diode is connected with the turn-off transmitter; the output end of the power supply assembly is connected with the positive electrode of the second diode, and the negative electrode of the second diode is connected with the turn-off transmitter; and the turn-off transmitter is used for controlling the power generation assembly to generate power in an electrified state or controlling the power generation assembly to turn off to generate power in a power-losing state.
2. The energy storage and power supply system of claim 1, wherein the power supply assembly further comprises a second input; the switching power supply further comprises a second output end; and the second output end of the switching power supply is connected with the second input end of the power supply assembly and is used for charging the power supply assembly.
3. The energy storage and power supply system of claim 2, further comprising a boost circuit, a buck/boost circuit, and a first capacitor;
the input end of the boost circuit is used for being connected with the power generation assembly, and the output end of the boost circuit is connected with the first input end of the switching power supply;
The input end of the buck/boost circuit is used for being connected with an energy storage battery, the first output end of the buck/boost circuit is connected with the first input end of the switching power supply, the second output end of the buck/boost circuit is connected with one end of the first capacitor and the second input end of the switching power supply, and the other end of the first capacitor is connected with the first input end of the switching power supply.
4. The energy storage and power supply system of claim 3, wherein the switching power supply is further configured to connect to a power grid.
5. The energy storage and power supply system of claim 4, further comprising a rectifier bridge; and the switching power supply is connected with the power grid through the rectifier bridge.
6. The energy storage and power supply system of claim 5, further comprising a first normally closed relay, a second capacitor, and a control circuit;
The input end of the rectifier bridge is used for being connected with the power grid, the first output end of the rectifier bridge is connected with a first switch contact of the first normally-closed relay, and a second switch contact of the first normally-closed relay is connected with the first input end of the switch power supply and one end of the second capacitor;
The second output end of the rectifier bridge is connected with the first switch contact of the second normally closed relay, and the second switch contact of the second normally closed relay is connected with the second input end of the switching power supply and the other end of the second capacitor;
The input end of the control circuit is connected with the third output end of the switching power supply, the first output end of the control circuit is connected with the control contact of the first normally closed relay, and the second output end of the control circuit is connected with the control contact of the second normally closed relay.
7. The energy storage and power supply system of claim 6, further comprising a third diode and a fourth diode;
The positive electrode of the third diode is connected with the second switch contact of the first normally-closed relay, and the negative electrode of the third diode is connected with one end of the second capacitor and the first input end of the switch power supply;
And the cathode of the fourth diode is connected with a second switch contact of the second normally-closed relay, and the anode of the fourth diode is connected with the other end of the second capacitor and the second input end of the switch power supply.
8. The energy storage and power supply system of claim 7, further comprising a first power interface, a second power interface, and a third power interface;
The input end of the first power interface is used for being connected with the power generation assembly, and the output end of the first power interface is connected with the input end of the booster circuit;
The input end of the second power interface is used for being connected with the energy storage battery, and the output end of the second power interface is used for being connected with the input end of the buck/boost circuit;
the input end of the third power interface is used for being connected with the power grid, and the output end of the third power interface is connected with the input end of the rectifier bridge.
9. An energy storage system comprising a load and the energy storage and power supply system of any one of claims 1 to 8, the energy storage and power supply system being configured to power the load.
10. A method of storing energy for use in the energy storage and power supply system of claim 1, the method comprising:
acquiring electric energy from the power generation assembly through the switching power supply to supply power for the shutdown transmitter;
acquiring illumination intensity from the photosensitive detection assembly through the power supply assembly, and starting power supply or closing power supply to the turn-off transmitter according to the illumination intensity;
The first output end of the switching power supply is connected with the positive electrode of a first diode, and the negative electrode of the first diode is connected with the turn-off transmitter; the output end of the power supply assembly is connected with the positive electrode of a second diode, and the negative electrode of the second diode is connected with the turn-off transmitter;
and if the shutdown transmitter is in an electrified state, controlling the power generation assembly to generate power through the shutdown transmitter, or if the shutdown transmitter is in a power failure state, controlling the power generation assembly to shut down power generation through the shutdown transmitter.
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