Distributed energy storage electric energy aggregation device

Abstract

The utility model belongs to the technical field of distributed energy storage, and particularly discloses a distributed energy storage electric energy aggregation device, which comprises a storage cabinet, a charging inlet wire, a data processor and three relay switches, the storage cabinet is internally provided with a plurality of energy storage batteries, the energy storage batteries are stacked in the storage cabinet, one end of the charging inlet wire extends into the storage cabinet and is connected with the grid-connected inverter, and the grid-connected inverter is connected with a grid-connected outlet wire. On the basis that the data processor receives a grid-connected power supply signal of a remote control center, when grid-connected power supply is needed, on one hand, the charging inlet wire directly outputs electric energy to the grid-connected inverter, on the other hand, the energy storage battery outputs the stored electric energy to the grid-connected inverter, and the grid-connected inverter converts direct-current electric energy into alternating-current electric energy to access the network. When grid-connected use is not needed, generated electric energy directly charges the energy storage battery, the control mode is that the data processor directly regulates and controls the three relay switches, the reaction speed is high, and safety is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of distributed energy storage, in particular to an electric energy aggregation device for distributed energy storage. Background Art

[0002] Distributed energy storage is an energy storage solution that is integrated from multiple small energy storage systems. It can provide stable and reliable power to the power grid through a distributed power generation system based on renewable energy.

[0003] The realization of distributed energy storage is inseparable from the progress of modern battery technology. A battery is a device that can convert chemical energy into electrical energy and convert electrical energy into chemical energy when needed.

[0004] In actual use, the electricity generated by renewable energy is stored in batteries or connected to the power supply network. This requires a choice. Generally, manual switching of power supply or mechanical power supply is adopted, which has low operating efficiency and dangerous situations in close-range switching. Utility Model Content

[0005] The purpose of the utility model is to provide an electric energy aggregation device for distributed energy storage, so as to solve the problem that the electric energy generated by renewable energy proposed in the above background technology is stored in batteries or connected to the power supply network, which requires a choice. Generally, manual switching of power supply mode or mechanical power supply mode is adopted, which has low operating efficiency and dangerous situations in close-range switching.

[0006] To achieve the above purpose, the utility model provides the following technical solution: an electric energy aggregation device for distributed energy storage, comprising:

[0007] A storage cabinet, wherein a plurality of energy storage batteries are arranged inside the storage cabinet, and the energy storage batteries are stacked in the storage cabinet;

[0008] A charging inlet line, one end of which extends into the storage cabinet and is connected to the grid-connected inverter, the grid-connected inverter is connected to a grid-connected outlet line, and the charging inlet line is also connected to a battery charging wire and a battery grid-connected discharge wire;

[0009] A data processor and three relay switches, wherein the data processor is arranged in a storage cabinet, a signal output end of the data processor is electrically connected to the three relay switches, the three relay switches are electrically connected to a charging incoming line, a battery charging wire, and a battery grid-connected discharge wire, respectively, and the relay switch on the charging incoming line is located between the battery charging wire and the battery grid-connected discharge wire.

[0010] Preferably, the storage cabinet comprises a hollow cabinet body with a door opening at the front, and a cabinet door is rotatably connected to the front door opening of the cabinet body through a hinge.

[0011] Preferably, a ventilation and heat dissipation slot is opened on the front wall of the cabinet door, and a dustproof isolation mesh plate is arranged on the ventilation and heat dissipation slot.

[0012] Preferably, a load-bearing bracket is fixedly connected to an inner side wall of the storage cabinet, and the energy storage battery is supported on an upper surface of the load-bearing bracket.

[0013] Preferably, a side wall of the storage cabinet is provided with a charging line inlet and a grid-connected line outlet, and the charging line inlet and the grid-connected line outlet pass through the charging line inlet and the grid-connected line outlet respectively.

[0014] Preferably, a mounting frame is provided on the outer wall of the grid-connected inverter, and the mounting frame is connected to the inner wall of the storage cabinet.

[0015] Preferably, the supporting bracket is hollow, and the distance between the upper and lower supporting brackets is greater than the height of the energy storage battery.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] When in use, based on the data processor receiving the grid-connected power supply signal from the remote control center, when grid-connected power supply is needed, on the one hand, the charging line directly outputs the electric energy to the grid-connected inverter, and on the other hand, the energy storage battery outputs the stored electric energy to the grid-connected inverter, and the grid-connected inverter converts the DC power into AC power for feeding into the grid.

[0018] When it is not necessary to connect to the grid, the generated electricity is directly used to charge the energy storage battery. The control method here is that the data processor directly adjusts the three relay switches, which has a faster response speed and is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the cabinet of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the load-bearing bracket of the utility model inside the cabinet;

[0022] Figure 4 This is a schematic diagram of the structure of the utility model in which the charging incoming line is connected to the solar photovoltaic panel.

[0023] In the figure: 1. Cabinet; 2. Cabinet door; 3. Dust-proof isolation mesh plate; 4. Charging line inlet; 5. Grid-connected line outlet; 6. Support bracket; 7. Energy storage battery; 8. Charging line inlet; 9. Battery charging wire; 10. Grid-connected inverter; 11. Grid-connected line outlet; 12. Battery grid-connected discharge wire; 13. Relay switch; 14. Data processor. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0026] Embodiment 1:

[0027] See also Figure 1-4 ,The utility model provides a technical solution: an electric energy aggregation device for distributed energy storage, comprising: a storage cabinet, a charging line 8, a data processor 14 and three relay switches 13,;

[0028] A plurality of energy storage batteries 7 are arranged inside the storage cabinet, and the energy storage batteries 7 are stacked in the storage cabinet. One end of the charging incoming line 8 extends into the storage cabinet and is connected to the grid-connected inverter 10. The grid-connected inverter 10 is connected to the grid-connected output line 11. The charging incoming line 8 is also connected to a battery charging wire 9 and a battery grid-connected discharge wire 12. The data processor 14 is arranged in the storage cabinet, and the signal output end of the data processor 14 is electrically connected to three relay switches 13. The three relay switches 13 are electrically connected to the charging incoming line 8, the battery charging wire 9, and the battery grid-connected discharge wire 12, respectively, and the relay switch 13 on the charging incoming line 8 is located between the battery charging wire 9 and the battery grid-connected discharge wire 12.

[0029] Analysis of the above content: When using, follow Figure 2 In this way, the battery charging wire 9 is connected to the charging port of the energy storage battery 7, the battery grid-connected discharge wire 12 is connected to the discharge port of the energy storage battery 7, the charging incoming line 8 is externally connected to the power generation equipment (such as a photovoltaic power generation panel), and the generated electric energy is input into the storage cabinet through the charging incoming line 8, and the three relay switches 13 are respectively marked as relay switch A, relay switch B, and relay switch C. Relay switch A, relay switch B, and relay switch C are respectively connected to the battery charging wire 9, the battery grid-connected discharge wire 12, and the charging incoming line 8, and the three relay switches are controlled based on the output signal of the data processor 14.

[0030] When grid-connected power supply is required, relay switch A is closed, relay switch B and relay switch C are opened, and the electric energy output by energy storage battery 7 and charging line 8 is output to grid-connected inverter 10, and grid-connected inverter 10 converts DC power into AC power for grid connection.

[0031] When grid-connected power supply is not needed, relay switch A is turned on, relay switch B and relay switch C are turned off, and the electric energy output by the charging incoming line 8 charges the energy storage battery 7.

[0032] Embodiment 2:

[0033] See also Figure 1-4 The utility model provides a technical solution based on the first embodiment: the storage cabinet comprises a hollow cabinet body 1 with a door opening at the front, and a cabinet door 2 is rotatably connected to the front door opening of the cabinet body 1 through a hinge.

[0034] Analysis of the above content: Through the cooperation between the cabinet body and the cabinet door 2, it is convenient to open and close the cabinet door 2, thereby facilitating the maintenance of the equipment inside the cabinet body 1.

[0035] Embodiment three:

[0036] See also Figure 1-4 The utility model provides a technical solution based on the second embodiment: a ventilation and heat dissipation slot is opened on the front wall of the cabinet door 2, and a dustproof isolation mesh plate 3 is arranged on the ventilation and heat dissipation slot.

[0037] Analysis of the above content: Through the provision of ventilation and heat dissipation slots, the internal equipment is cooled, and the dustproof isolation mesh plate 3 plays a role in dust prevention without affecting the heat dissipation.

[0038] Embodiment 4:

[0039] See also Figure 1-4 The utility model provides a technical solution based on the first embodiment: a load-bearing bracket 6 is fixedly connected to an inner side wall of the storage cabinet, and the energy storage battery 7 is supported on the upper surface of the load-bearing bracket 6 .

[0040] Analysis of the above content: By setting the supporting bracket 6, each energy storage battery 7 is supported, which is convenient for individual maintenance of each energy storage battery 7, and ventilation is ensured between the energy storage batteries 7 to facilitate heat dissipation.

[0041] Embodiment five:

[0042] See also Figure 1-4 The utility model provides a technical solution based on the first embodiment: a charging line inlet 4 and a grid-connected line outlet 5 are provided on one side wall of the storage cabinet, and the charging line inlet 8 and the grid-connected line outlet 11 pass through the charging line inlet 4 and the grid-connected line outlet 5 respectively.

[0043] Analysis of the above content: The charging line inlet 4 and the grid-connected line outlet 5 are circular holes opened on the side wall of the storage cabinet.

[0044] Embodiment six:

[0045] See also Figure 1-4 The utility model provides a technical solution based on the first embodiment: an installation frame is provided on the outer wall of the grid-connected inverter 10, and the installation frame is connected to the inner wall of the storage cabinet.

[0046] Analysis of the above content: The installation frame fixes the grid-connected inverter 10 on the inner wall of the storage cabinet. The installation frame is set to an n shape, and both ends of the installation frame are connected to the inner wall of the storage cabinet by screws.

[0047] Embodiment seven:

[0048] See also Figure 1-4 The utility model provides a technical solution based on the fourth embodiment: the supporting bracket 6 is hollow, and the distance between the upper and lower supporting brackets 6 is greater than the height of the energy storage battery 7.

[0049] Analysis of the above content: The hollow-shaped supporting bracket 6 can reduce weight and at the same time ensure air circulation on the lower surface of the energy storage battery 7.

[0050] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0051] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A distributed energy storage power aggregation device, characterized in that: include: A storage cabinet, wherein a plurality of energy storage batteries (7) are arranged inside the storage cabinet, and the energy storage batteries (7) are stacked in the storage cabinet; A charging inlet line (8), one end of which extends into the storage cabinet and is connected to a grid-connected inverter (10), the grid-connected inverter (10) is connected to a grid-connected outlet line (11), and the charging inlet line (8) is also connected to a battery charging wire (9) and a battery grid-connected discharge wire (12); A data processor (14) and three relay switches (13), wherein the data processor (14) is arranged in a storage cabinet, a signal output end of the data processor (14) is electrically connected to the three relay switches (13), the three relay switches (13) are electrically connected to a charging incoming line (8), a battery charging wire (9), and a battery grid-connected discharge wire (12), respectively, and the relay switch (13) on the charging incoming line (8) is located between the battery charging wire (9) and the battery grid-connected discharge wire (12).

2. The distributed energy storage power aggregation device according to claim 1, characterized in that: The storage cabinet comprises a hollow cabinet body (1) with a door opening at the front, and a cabinet door (2) rotatably connected to the door opening at the front of the cabinet body (1) via a hinge.

3. The distributed energy storage power aggregation device according to claim 2 is characterized in that: A ventilation and heat dissipation slot is provided on the front wall of the cabinet door (2), and a dustproof isolation mesh plate (3) is provided on the ventilation and heat dissipation slot.

4. The distributed energy storage power aggregation device according to claim 1 is characterized in that: A load-bearing bracket (6) is fixedly connected to one side wall of the storage cabinet, and the energy storage battery (7) is supported on the upper surface of the load-bearing bracket (6).

5. The distributed energy storage power aggregation device according to claim 1, characterized in that: A charging line inlet (4) and a grid-connected line outlet (5) are provided on one side wall of the storage cabinet, and the charging line inlet (8) and the grid-connected line outlet (11) pass through the charging line inlet (4) and the grid-connected line outlet (5) respectively.

6. The distributed energy storage power aggregation device according to claim 1, characterized in that: An installation frame is provided on the outer wall of the grid-connected inverter (10), and the installation frame is connected to the inner wall of the storage cabinet.

7. The distributed energy storage power aggregation device according to claim 4 is characterized in that: The supporting bracket (6) is hollow, and the distance between the upper and lower supporting brackets (6) is greater than the height of the energy storage battery (7).

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