CN217607548U

CN217607548U - Energy storage structure

Info

Publication number: CN217607548U
Application number: CN202221458843.2U
Authority: CN
Inventors: 张庙林; 王天稳; 季陈; 李伟桐; 王成伟; 顾慧敏; 王嘉玲; 康晨熙; 王姝
Original assignee: Wotai Energy Co ltd
Current assignee: Wotai Energy Co ltd
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2022-10-18
Anticipated expiration: 2032-06-09

Abstract

The utility model provides an energy storage structure for the energy storage with for load power supply, its characterized in that: the energy storage structure comprises a battery assembly, a photovoltaic assembly, a DC/AC module connected between the photovoltaic assembly and the load, and a DC/DC module connected between the photovoltaic assembly and the battery assembly, wherein the battery assembly is electrically connected with the load to supply power to the load. The utility model discloses an energy storage structure can use photovoltaic module to supply power for the load, also can use photovoltaic module to supply power in order to store the electric energy for battery pack, improves the convenience, uses more in a flexible way to reach and both can practice thrift the charges of electricity, can produce clean electric energy again, practice thrift the effect of electric energy.

Description

Energy storage structure

Technical Field

The utility model relates to an energy storage structure.

Background

Along with the gradual change of earth climate, a plurality of countries release energy-saving and emission-reducing policies, the control of resident and industrial electricity utilization is more and more strict, a series of measures such as peak-valley electricity price policy and the like are carried out in a plurality of countries and regions to control the resident and industrial electricity utilization, the price of electricity utilization is related to the time period of electricity utilization, the electricity price is high in the peak period of electricity utilization, and the electricity price is low in the valley period of electricity utilization. Aiming at different time periods and policies of different electricity prices, the technology of valley electricity price peak utilization can be utilized, the electric energy with lower electricity price is stored, and then the stored electric energy is used in the electricity consumption peak time period with higher electricity charge, so that the cost of electricity consumption can be greatly reduced. At present, the existing large energy storage structures based on valley electricity peak use in the market are fewer, the operation is not flexible and complete, and the electricity utilization cost is still too high.

In view of the above, there is a need for an improved energy storage structure to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an energy storage structure to solve the problem that current energy storage structure is not nimble enough, the power consumption cost is too high.

In order to achieve the above object, the utility model provides an energy storage structure for the energy storage with for the load power supply, the energy storage structure include battery pack, photovoltaic module, connect photovoltaic module with DC AC module between the load, connect photovoltaic module with DC module between the battery pack, battery pack with load electric connection is in order to give the load power supply.

As a further improvement of the present invention, the energy storage structure further includes an energy management device for controlling the battery assembly and the operation of the photovoltaic assembly.

As a further improvement of the present invention, the energy storage structure further comprises a human-computer interaction device electrically connected to the energy management device.

As a further improvement of the present invention, the energy storage structure further comprises a cloud platform connected to the energy management device.

As a further improvement of the present invention, the energy storage structure further includes an electric meter connected to the load and the commercial power, the commercial power and the battery assembly electrically connected, the electric meter and the energy management device electrically connected.

As a further improvement of the utility model, the ammeter with be equipped with the switch that is incorporated into the power networks between the load and be incorporated into the power networks/from net auto-change over device.

As a further improvement of the utility model, battery pack includes a plurality of batteries, with a plurality of high-voltage box that the battery is connected respectively, with a plurality of the battery collection flow box that is used for the electric energy of every bunch of battery that gathers that the high-voltage box is connected.

As a further improvement, the photovoltaic module includes a solar photovoltaic panel arranged outdoors, and a photovoltaic header box connected with the solar photovoltaic panel.

As a further improvement of the present invention, the energy storage structure further comprises a transformer disposed between the DC/AC module and the load.

As a further improvement, the photovoltaic module is provided with a first communication switch between the battery modules, and a second communication switch is provided between the photovoltaic module and the load.

The utility model has the advantages that: the utility model discloses an energy storage structure can use photovoltaic module to supply power for the load, also can use photovoltaic module to supply power in order to store the electric energy for battery pack, improves the convenience, uses more in a flexible way to reach and both can practice thrift the charges of electricity, can produce clean electric energy again, practice thrift the effect of electric energy.

Drawings

Fig. 1 is a schematic structural diagram of an energy storage structure of the present invention;

fig. 2 is a flow chart of a power supply method of the energy storage structure of the present invention;

fig. 3 is a flow chart of an energy storage method of the energy storage structure of the present invention.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 3, the energy storage structure 100 of the present invention is used for storing energy and supplying power to a load 200. The energy storage structure 100 comprises a battery assembly 1, a photovoltaic assembly 2, a DC/AC module 3 connected between the photovoltaic assembly 2 and a load 200, a transformer 4 arranged between the DC/AC module 3 and the load 200, a DC/DC module 5 connected between the photovoltaic assembly 2 and the battery assembly 1, an energy management device 6 used for controlling the battery assembly 1 and the photovoltaic assembly 2 to work, a human-computer interaction device 7 electrically connected with the energy management device 6, a cloud platform 8 connected with the energy management device 6, and an electric meter 9 connected with the load 200 and a mains supply 101.

The load 200 includes some electrical appliances, or other devices that use electricity.

The battery assembly 1 is electrically connected to the load 200 to supply power to the load 200. The battery assembly 1 includes a plurality of batteries 11, a plurality of high-voltage boxes 12 respectively connected to the plurality of batteries 11, and a battery combiner box 13 connected to the plurality of high-voltage boxes 12 to combine electric energy of each cluster of batteries 11.

The batteries 11 are used for storing and releasing electric energy, each battery 11 is provided with one high-voltage box 12, and the high-voltage boxes 12 are used for collecting relevant data of the batteries 11. The battery combiner box 13 is used for summarizing the electric energy of each battery 11.

The commercial power 101 is electrically connected to the battery assembly 1 to supply power to the battery assembly 1.

The photovoltaic module 2 comprises a solar photovoltaic panel 21 arranged outdoors and a photovoltaic combiner box 22 connected with the solar photovoltaic panel 21. The photovoltaic combiner box 22 is used for collecting electric energy generated by the solar photovoltaic panel 21.

The DC/AC module 3 is a module for converting direct current into alternating current, and the transformer 4 is used for converting three-phase power into three-phase four-wire power so that the load 200 can be directly used.

The DC/DC module 5 is a module for converting direct current into direct current, so that the photovoltaic module 2 can provide power to the battery module 1.

The electricity meter 9 is electrically connected with the energy management device 6. A grid-connected switch 91 and a grid-connected/off-grid switching device 92 are arranged between the electric meter 9 and the load 200.

A first communication switch 23 is arranged between the photovoltaic module 2 and the battery module 1, and a second communication switch 24 is arranged between the photovoltaic module 2 and the load 200. The first communication switch 23 and the second communication switch 24 are used for controlling the photovoltaic module 2 to supply power to the load 200 or supply power to the battery module 1.

The energy management device 6 is a central controller and is responsible for controlling the operation logic of the whole energy storage structure 100, the human-computer interaction device 7 can be a display screen, and buttons are arranged beside the display and can be used for manually modifying relevant parameters such as charging and discharging time, charging and discharging power, charging and discharging cut-off electric quantity and the like of the energy storage structure 100.

Cloud platform 8 is connected with energy management device 6 through ethernet, and energy management device 6 masters the various data information of whole energy storage structure 100 operation, then through ethernet, energy management device 6 can upload cloud platform 8 with data, consequently can long-rangely look over energy storage structure 100's data, and cloud platform 8 can be connected with cell-phone 102APP for supply the user long-rangely to control energy storage structure 100.

The electric meter 9 is configured to monitor current electric quantity data and upload current information to the energy management device 6 in real time, and the energy management device 6 controls the operation of the whole energy storage structure 100 according to the electric quantity data and the operation logic.

The power supply method of the energy storage structure 100 includes the following steps:

s1: judging whether the photovoltaic module 2 generates power, if so, entering a step S2, if not, judging whether the power supply power of the battery module 1 is more than or equal to the power of the load 200, if so, supplying power to the load 200 by using the battery module 1, and if not, supplying power to the load 200 by using the battery module 1 and a commercial power 101 together; under the condition that photovoltaic power generation is not carried out, the battery assembly 1 is preferentially used for supplying power to the load 200, and if the power of the battery assembly 1 is insufficient, the insufficient part is complemented by the commercial power 101.

S2: judging whether the power of the photovoltaic module 2 is larger than or equal to the power of the load 200, if not, entering a step S3, if so, judging whether the battery module 1 needs to be charged, if so, the photovoltaic module 2 supplies power to the load 200 and simultaneously charges the battery module 1, and if not, controlling the photovoltaic module 2 to supply power to the load 200 and feeding redundant electric quantity to a network; under the condition that the power generation amount of the photovoltaic module 2 is larger than the power of the load 200, the redundant power can be used for charging the battery module 1, and if the battery module 1 does not need to be charged, the redundant power is sold or sent to a power grid.

S3: and judging whether the power of the photovoltaic module 2 and the power of the battery module 1 are larger than the power of the load 200, if so, supplying power to the load 200 by the photovoltaic module 2 and the battery module 1 together, and if not, supplying power to the load 200 by the photovoltaic module 2, the battery module 1 and the mains supply 101 together. Under the condition that the power generation amount of the photovoltaic module 2 is smaller than the power of the load 200, the battery module 1 and the photovoltaic module 2 jointly supply power to the load 200, and if the power is still not met, the commercial power 101 also jointly supplies power. The power of the photovoltaic module 2 and the power of the battery module 1 are the sum of the two powers.

The power supply method of the energy storage structure 100 can meet the power supply requirement under various conditions, so that the load 200 can work normally.

The energy storage method of the energy storage structure 100 comprises the following steps:

t0: setting a charging period, a discharging period, a charging cutoff electric quantity, and a discharging cutoff electric quantity by the energy management device 6; the step can be set remotely by the cloud platform 8 or by the human-computer interaction device 7.

T1: the user selects whether charging can be carried out, if not, the step T2 is carried out, if yes, whether the current time period is in a charging time period is judged, if not, the step T2 is carried out, if yes, whether the electric quantity of the battery assembly 1 is lower than the charging cut-off electric quantity is judged, if yes, the charging function is executed, and if not, whether the electric quantity of the battery assembly 1 is lower than the charging cut-off electric quantity is repeatedly judged; the charging function can be performed by the photovoltaic module 2 or the commercial power 101, and if the battery module 1 is charged by the commercial power 101, the valley power is preferably used to reduce the cost.

T2: a user selects whether the discharge can be performed, if not, the energy storage structure 100 supplies power to the load 200 by using the photovoltaic module 2 and/or the commercial power 101, and if so, the step T3 is performed; in step T2, the photovoltaic module 2 is preferably used for power supply.

T3: judging whether the current time is in a discharging time period, if not, supplying power to a load 200 by the energy storage structure 100 by using the photovoltaic module 2 and/or a mains supply 101, and if so, entering a step T4; in this step, the photovoltaic module 2 is preferably used for power supply.

T4: and judging whether the electric quantity of the battery assembly 1 is higher than the discharge cut-off electric quantity, if not, repeatedly judging whether the current is in a discharge time interval, if so, comparing the power of the load 200 with the power of the battery assembly 1 and the power of the photovoltaic assembly 2, and selectively using one or more of the battery assembly 1, the photovoltaic assembly 2 and the commercial power 101 to supply power to the load 200. The photovoltaic module 2 is preferentially selected to supply power, if the photovoltaic module 2 does not generate power or the power supply is insufficient, the battery module 1 supplies power cooperatively, and if the power supply is insufficient, the commercial power 101 is connected to supply power together.

The energy storage structure 100, the power supply method of the energy storage structure 100, and the energy storage method of the energy storage structure 100 of the present invention can use the photovoltaic module 2 to supply power to the load 200, can also use the photovoltaic module 2 to supply power to the battery module 1 to store electric energy, and can also supply power to the battery module 1 through the commercial power 101 to store electric energy; the charging and discharging time can be set as required, the charging and discharging cut-off electric quantity can be set as required, different modes can be added according to actual requirements, the functions of remotely checking system data and modifying mode configuration and the like through a network are also achieved, the convenience is improved, the use is more flexible, the energy storage structure 100 also has photovoltaic power for generating electric energy and is not limited to the electricity for storing a power grid when the electricity price is lower, and therefore the effects of saving electricity charges, generating clean electric energy and saving electric energy are achieved.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An energy storage structure for storing energy and supplying power to a load, characterized in that: the energy storage structure comprises a battery pack, a photovoltaic pack, a DC/AC module connected between the photovoltaic pack and the load and a DC/DC module connected between the photovoltaic pack and the battery pack, wherein the battery pack is electrically connected with the load to supply power to the load.

2. The energy storage structure of claim 1, wherein: the energy storage structure further comprises an energy management device for controlling the operation of the battery assembly and the photovoltaic assembly.

3. The energy storage structure of claim 2, wherein: the energy storage structure further comprises a man-machine interaction device electrically connected with the energy management device.

4. The energy storage structure of claim 2, wherein: the energy storage structure further comprises a cloud platform connected with the energy management device.

5. The energy storage structure of claim 2, wherein: the energy storage structure further comprises an electric meter connected with a load and a mains supply, the mains supply is electrically connected with the battery assembly, and the electric meter is electrically connected with the energy management device.

6. The energy storage structure of claim 5, wherein: and a grid-connected switch and a grid-connected/off-grid switching device are arranged between the electric meter and the load.

7. The energy storage structure of claim 1, wherein: the battery assembly comprises a plurality of batteries, a plurality of high-voltage boxes respectively connected with the batteries, and a plurality of battery confluence boxes connected with the high-voltage boxes and used for summarizing electric energy of each battery.

8. The energy storage structure of claim 1, wherein: the photovoltaic assembly comprises a solar photovoltaic panel arranged outdoors and a photovoltaic combiner box connected with the solar photovoltaic panel.

9. The energy storage structure of claim 1, wherein: the energy storage structure further includes a transformer disposed between the DC/AC module and a load.

10. The energy storage structure of claim 1, wherein: the photovoltaic module with be equipped with first intercommunication switch between the battery pack, be equipped with the second intercommunication switch between photovoltaic module and the load.