Liquid cooling energy storage cabinet

Abstract

The utility model relates to a liquid cooling energy storage cabinet, which comprises a plurality of energy storage cabinets needing grid connection, a grid connection cabinet and a liquid cooling unit arranged in the energy storage cabinets, and the liquid cooling unit is preferably arranged to be a wall-mounted liquid cooling unit and is arranged on a cabinet door of the energy storage cabinets, so that the top space is saved; a cabinet body of the energy storage cabinet is divided into a battery chamber, an electrical chamber and a busbar chamber from bottom to top, the three chambers are independently arranged, and a wall-mounted liquid cooling unit is adopted and arranged on a cabinet door, so that the height space of energy storage is saved, the busbar chamber is reserved above the saved space, a copper bar connector is fixedly connected to the interior of the busbar chamber, and the energy storage efficiency is improved. The copper bar joints are matched with the bus copper bars to connect and combine the cabinets, so that on-site foundation construction can be reduced, the on-site overall construction is more convenient, the cost is reduced, and grid-connected connection of a plurality of energy storage cabinets and a grid-connected cabinet is facilitated.

Description

Technical Field

[0001] The utility model relates to a liquid-cooled energy storage cabinet, belonging to the technical field of energy storage equipment. Background Art

[0002] With the continuous growth of renewable energy and the support of national policies, energy storage cabinets have rapidly developed due to their easy installation, small footprint, and flexible deployment. However, although most energy storage cabinets on the market adopt an integrated layout to reduce on-site installation and commissioning work, they still have problems such as inconvenient on-site wiring and complex foundation construction.

[0003] Currently, the mainstream solution for liquid-cooled energy storage cabinets generally adopts rack-mounted liquid cooling units or plug-in frame-type liquid cooling units, and the external cable outlet method adopts bottom-in and bottom-out. When installing on-site with this solution, it is often necessary to reserve a cable trench during foundation construction. In addition, the small bottom space makes on-site connection extremely complicated and inconvenient. For example, 1. During the wiring process, it is necessary to connect the wires from the bottom of the liquid-cooled energy storage cabinet, and the space is small and the operation is relatively difficult. 2. Cable trenches and wiring space need to be reserved during the foundation construction of the liquid-cooled energy storage cabinet, which increases construction costs. 3. When multiple liquid-cooled energy storage cabinets are connected in parallel, each liquid cooling cabinet needs to lead out cables. The large number of external cables makes wiring errors prone to occur, posing a safety hazard.

[0004] In order to solve the above problems, this application proposes a liquid-cooled energy storage cabinet. Utility Model Content

[0005] The technical problem to be solved by the present invention overcomes the existing defects and provides a liquid-cooled energy storage cabinet, which avoids the need to pre-buried cable troughs during foundation construction, thereby reducing construction difficulty and saving construction costs. At the same time, it can also prevent cables from being soaked in water in rainy weather, reducing safety hazards, and can effectively solve the problems in the background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A liquid-cooled energy storage cabinet comprises a plurality of energy storage cabinets that need to be grid-connected, a grid-connected cabinet, and a liquid-cooling unit installed inside the energy storage cabinet. The liquid-cooling unit is preferably configured as a wall-mounted liquid-cooling unit and installed on the cabinet door of the energy storage cabinet, thereby saving top space. The cabinet body of the energy storage cabinet is divided into a battery compartment, an electrical compartment, and a busbar compartment from bottom to top. The three compartments are arranged independently of each other. A wall-mounted liquid-cooling unit is adopted and placed on the cabinet door, thereby saving height space of the energy storage cabinet. The saved space is used to reserve a busbar compartment above. A copper busbar joint is fixedly connected to the interior of the busbar compartment. The copper busbar joint cooperates with a busbar to connect and connect the cabinets. This can reduce on-site foundation construction, make the overall on-site construction more convenient, and reduce costs.

[0008] As a further improvement of the present invention, a distribution box and a PCS are installed inside the electrical room. The distribution box and the PCS are electrically connected to the copper busbar connector through a quick-plug connector, thereby realizing a quick connection between the distribution box, the PCS and the copper busbar connector inside the electrical room.

[0009] As a further improvement of the present invention, the liquid cooling unit is arranged to be wall-mounted, and a battery pack is arranged inside the battery compartment.

[0010] As a further improvement of the present invention, adjacent energy storage cabinets or grid-connected cabinets are provided with threading grooves, and a sealing cover plate for sealing is provided on the top of the threading groove.

[0011] As a further improvement of the present invention, the cross section of the sealing cover plate is set to be an X-shape, and adjacent energy storage cabinets or grid-connected cabinets are sealed and connected via the sealing cover plate.

[0012] As a further improvement of the present invention, the bus copper busbar is provided in several sections, and adjacent bus copper busbars are connected by connecting copper busbars.

[0013] The beneficial effects of the utility model are as follows: a liquid-cooled energy storage cabinet adopts a wall-mounted liquid cooling unit, and the liquid cooling unit is placed on the front door panel, thereby saving the height space of the liquid cooling cabinet. The saved space is used to reserve a busbar room on the top, and the cabinets are connected and combined through copper buses. This can reduce on-site foundation construction, make the overall on-site construction more convenient, and reduce costs. At the same time, it can also prevent the cables from being soaked in water in rainy weather, reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0015] Figure 1 This is a structural diagram of a liquid-cooled energy storage cabinet of the present utility model.

[0016] Figure 2 This is a side structural diagram of a liquid-cooled energy storage cabinet of the present utility model.

[0017] Figure 3 This is a grid-connected structure diagram of a liquid-cooled energy storage cabinet in the utility model.

[0018] Figure 4 This utility model is a liquid cooling energy storage cabinet Figure 3 Enlarged structural diagram of part A in the middle.

[0019] Figure 5 This is a diagram of the internal structure of a liquid-cooled energy storage cabinet when it is connected to the grid.

[0020] Numbers in the figure: 1. Energy storage cabinet; 2. Cabinet door; 3. Liquid cooling unit; 4. Busbar room; 5. Electrical room; 6. Battery room; 7. Battery pack; 8. Copper busbar connector; 9. Quick-plug connector; 10. Grid-connected cabinet; 11. Sealing cover; 12. Wire-threading groove; 13. Connecting copper busbar; 14. Busbar. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with specific embodiments. The accompanying drawings are only used for illustrative purposes and represent only schematic diagrams rather than actual drawings. They should not be understood as limiting this patent. In order to better illustrate the specific embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted. Based on the specific embodiments of the present invention, all other specific embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, in the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The present invention will be further elaborated below in conjunction with specific implementation methods.

[0023] Example

[0024] Since a single liquid-cooled energy storage cabinet has low power consumption, in practical applications, several or even dozens of them are usually connected in parallel in an energy storage power station. Figure 5 As shown, in order to increase the overall system capacity, several energy storage cabinets 1 are connected in parallel to the grid-connected cabinet 10. The traditional grid-connected method is to use bottom-out cables, and the external cable outlet method is bottom-in and bottom-out. When this solution is installed on-site, it is often necessary to reserve a cable trench during foundation construction. In addition, due to the small bottom space, the on-site connection is extremely complicated and inconvenient to construct.

[0025] like Figure 1-Figure 5As shown, a liquid-cooled energy storage cabinet is provided, wherein the interior of a single energy storage cabinet 1 is divided from bottom to top into a battery compartment 6, an electrical compartment 5, and a busbar compartment 4. The three compartments are arranged independently of each other. The liquid cooling unit 3 originally installed on the top of the energy storage cabinet 1 is installed on the cabinet door 2 of the energy storage cabinet 1, and the height space saved is reserved for the busbar compartment 4. A copper busbar connector 8 is fixedly connected to the interior of the busbar compartment 4. When multiple energy storage cabinets 1 need to be grid-connected, the energy storage cabinets 1 are connected in parallel via a busbar 14 to a grid-connecting cabinet 10. The copper busbar is used to connect and connect the cabinets. This can reduce the excavation and foundation construction of on-site cable trenches, making the overall on-site construction more convenient and reducing costs. It can also prevent cables from being soaked in water during rainy weather, reducing safety hazards.

[0026] In some optional embodiments, the interior of the electrical room 5 is used to install the distribution box and PCS, and the distribution box and PCS are electrically connected to the copper busbar connector 8 through the quick-plug connector 9. The electrical room inside the liquid-cooled energy storage cabinet adopts a modular design. The assembly of the distribution box and PCS is completed externally first, and then a rack-type installation is adopted. The tail is electrically connected to the copper busbar connector 8 inside the busbar room 4 using the quick-plug connector 9. This connection scheme can reduce the amount of cables used, make the wiring more beautiful, and make the installation more convenient.

[0027] In some optional embodiments, the liquid cooling unit 3 is configured to be wall-mounted, a battery pack 7 is provided inside the battery chamber 6, and the liquid cooling unit 3 originally installed on the top of the energy storage cabinet 1 is installed on the cabinet door 2 of the energy storage cabinet 1, and the saved height space is reserved for the busbar chamber 4.

[0028] In some optional embodiments, adjacent energy storage cabinets 1 or grid-connected cabinets 10 are each provided with a threading groove 12 , and a sealing cover plate 11 for sealing is provided on the top of the threading groove 12 .

[0029] In some optional embodiments, the cross-section of the sealing cover plate 11 is set to be an X-shape, and adjacent energy storage cabinets 1 or grid-connected cabinets 10 are sealed and connected through the sealing cover plate 11 .

[0030] In some optional embodiments, the bus copper bar 14 is provided in several sections, and adjacent bus copper bars 14 are connected by connecting copper bars 13 .

[0031] As a preferred solution, a certain distance is set between adjacent energy storage cabinets 1 or grid-connected cabinets 10. The busbars 14 are all arranged inside the energy storage cabinet 1 and extend out of the threading groove 12. The connecting copper bars 13 are connected to the busbars 14 from the outside of the energy storage cabinet 1 or grid-connected cabinet 10, which makes wiring more convenient. The connecting copper bars 13 are sealed from the top of the energy storage cabinet 1 by the sealing cover plate 11 to achieve a waterproof effect.

[0032] A liquid-cooled energy storage cabinet, the internal electrical room of the liquid-cooled energy storage cabinet adopts a modular design. The assembly of the distribution box and PCS is completed on the outside first, and then it is rack-mounted. The tail is electrically connected using a quick-plug connector 9 and a copper busbar connector 8 inside the busbar chamber 4. This connection scheme can reduce the amount of cables used, make the wiring more beautiful, and make the installation more convenient. This application uses the top busbar chamber 4 to connect multiple cabinets in parallel, which can realize direct grid-connected wiring from the outside, avoiding the need to pre-buried cable troughs during foundation construction, thereby reducing construction difficulty and saving construction costs. At the same time, it can also prevent the cables from being soaked in water in rainy weather, reducing safety hazards.

[0033] The above is a preferred embodiment of the present invention. The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A liquid-cooled energy storage cabinet, comprising an energy storage cabinet (1), a liquid cooling unit (3), and a grid-connected cabinet (10), wherein a cabinet door (2) is rotatably connected to the energy storage cabinet (1), and is characterized in that: The liquid cooling unit (3) is installed on the inner side of the cabinet door (2); a busbar chamber (4), an electrical chamber (5), and a battery chamber (6) are sequentially arranged inside the energy storage cabinet (1) from top to bottom; a copper busbar joint (8) is fixedly connected inside the busbar chamber (4); and adjacent energy storage cabinets (1) are electrically connected to the grid-connected cabinet (10) via a busbar (14).

2. The liquid-cooled energy storage cabinet according to claim 1, characterized in that: A distribution box and a PCS are installed inside the electrical room (5), and the distribution box and the PCS are electrically connected to the copper busbar connector (8) via a quick-connect connector (9).

3. The liquid-cooled energy storage cabinet according to claim 1, characterized in that: The liquid cooling unit (3) is arranged as a wall-mounted type, and a battery pack (7) is arranged inside the battery chamber (6).

4. The liquid-cooled energy storage cabinet according to claim 1, characterized in that: Adjacent energy storage cabinets (1) or grid-connected cabinets (10) are each provided with a threading groove (12), and a sealing cover plate (11) for sealing is provided on the top of the threading groove (12).

5. The liquid-cooled energy storage cabinet according to claim 4, characterized in that: The cross section of the sealing cover plate (11) is arranged in an "X" shape, and adjacent energy storage cabinets (1) or grid-connected cabinets (10) are sealed and connected via the sealing cover plate (11).

6. The liquid-cooled energy storage cabinet according to claim 1, characterized in that: The bus copper bars (14) are arranged into several sections, and adjacent bus copper bars (14) are connected via connecting copper bars (13).

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