Lithium battery energy storage equipment

Abstract

The utility model relates to the field of new energy storage, in particular to lithium battery energy storage equipment. The utility model provides a lithium battery energy storage device comprising a cabinet body which is internally provided with a direct current cabin and an alternating current cabin; the air-cooled liquid cooling host is arranged in the alternating current cabin; the high-voltage box is arranged in the alternating-current bin, and the high-voltage box is arranged below the air-cooled liquid-cooled host; the fire extinguishing system is arranged in the alternating current bin and is arranged on one side of the high-voltage box; the bidirectional energy storage converter is arranged in the alternating current bin and is arranged on one side, close to the fire extinguishing system, of the high-voltage box; and the plurality of battery packs are arranged in the direct current cabin. Through the arrangement, the air-cooled liquid-cooled host, the high-voltage box, the fire extinguishing system, the bidirectional energy storage converter and the plurality of battery packs can be compactly mounted in the cabinet body, so that the volume of the cabinet body is reduced, more cabinet bodies are placed on the same occupied area, more electric quantity can be stored, and the space utilization rate is improved.

Description

Technical Field

[0001] The utility model relates to the field of new energy storage, and specifically to a lithium battery energy storage device. Background Art

[0002] With the development of the new energy industry, the demand for energy storage cabinets in the industrial and commercial energy storage sector is increasing. Higher energy density means more power can be stored within the same footprint. Existing energy storage systems suffer from issues such as inefficient internal layout space, excessive height, and poor heat dissipation. These issues limit their performance and application scope. Utility Model Content

[0003] In order to solve the technical problems of low internal layout space utilization efficiency, excessive height and poor heat dissipation performance in existing energy storage systems, one purpose of the present utility model is to provide a lithium battery energy storage device.

[0004] To achieve the above-mentioned purpose, an embodiment of the present invention provides a lithium battery energy storage device, which is characterized in that it includes a cabinet with a DC warehouse and an AC warehouse inside; an air-cooled liquid-cooled main unit, which is arranged inside the AC warehouse; a high-voltage box, which is arranged inside the AC warehouse, and the high-voltage box is arranged below the air-cooled liquid-cooled main unit; a fire protection system, which is arranged inside the AC warehouse, and the fire protection system is arranged on one side of the high-voltage box; a bidirectional energy storage inverter, which is arranged inside the AC warehouse, and the bidirectional energy storage inverter is arranged on the side of the high-voltage box close to the fire protection system; and multiple battery packs, which are arranged inside the DC warehouse.

[0005] By setting up a DC warehouse and an AC warehouse inside the cabinet, installing an air-cooled and liquid-cooled host, a high-voltage box, a fire protection system and a bidirectional energy storage converter in the AC warehouse, and installing multiple battery packs in the DC warehouse, the space utilization rate is improved, and more cabinets can be placed in the same space, so that more electricity can be stored in the same floor area.

[0006] In addition, the lithium battery energy storage device in the above embodiment provided by the present invention may also have the following additional technical features:

[0007] The above technical solution also includes a plurality of columns fixedly connected to the inner walls on both sides of the cabinet, and the air-cooled liquid-cooled host and the bidirectional energy storage converter are installed on the columns; a plurality of support beams are arranged on both sides of the DC warehouse, and the plurality of support beams are arranged at intervals from top to bottom, and each support beam is connected to the plurality of columns on the same side.

[0008] By fixing a plurality of columns on the inner walls of both sides of the cabinet body and fixing a support beam on the plurality of columns on the same side, the structural strength of the cabinet body frame can be ensured.

[0009] The above technical solution further includes a plurality of brackets, which are arranged inside the DC warehouse, and the plurality of brackets are arranged in sequence from top to bottom, and the plurality of battery packs are respectively fixedly connected to the plurality of brackets.

[0010] By arranging multiple brackets from top to bottom in the DC silo, the battery packs can be placed on the brackets, thereby ensuring that each adjacent battery pack is separated from each other, avoiding contact between the battery packs and causing overheating and damage to the battery packs.

[0011] The above technical solution also includes a mounting plate, which is arranged in the AC compartment. The mounting plate is arranged on the side of the high-voltage box close to the fire protection system. The fire protection system is arranged above the mounting plate. The mounting plate is provided with a through hole on the side close to the bidirectional energy storage converter.

[0012] By providing a mounting plate in the AC compartment, the mounting plate is located on the side of the high-voltage box close to the fire protection system, and a through hole is opened on the side of the mounting plate close to the bidirectional energy storage inverter, so that the heat generated by the bidirectional energy storage AC converter can be discharged from the shutter through the through hole, further reducing the heat accumulation in the AC compartment.

[0013] The above technical solution also includes an AC front cabinet door and an AC rear cabinet door, which are rotatably connected to both sides of the AC warehouse respectively; and a DC cabinet door, which is rotatably connected to one side of the DC warehouse.

[0014] By rotating the AC front cabinet door and AC rear cabinet door on both sides of the AC compartment, the AC front cabinet door and AC rear cabinet door can be opened at any time to perform other work such as fault handling or wiring in the AC compartment.

[0015] The above technical solution also includes an emergency stop switch button, which is arranged on the DC cabinet door.

[0016] By providing an emergency stop switch button on the DC cabinet door, when a device fails, the emergency stop switch button can be pressed to suspend the operation of the entire cabinet.

[0017] The above technical solution also includes an air intake valve, which is arranged on the DC cabinet door; and an exhaust valve, which is arranged on the DC cabinet door.

[0018] By equipping the DC cabinet door with an air intake valve and an exhaust valve, when the battery pack experiences thermal runaway, external gas can enter the DC compartment through the air intake valve. When the DC compartment pressure is too high, the combustible gas inside the DC compartment can be discharged from the exhaust valve, preventing the increase of combustible gas in the DC compartment and further expansion of the fire.

[0019] The above technical solution also includes an explosion relief valve, which is arranged on the DC cabinet door.

[0020] By providing an explosion relief valve on the DC cabinet door, when the internal pressure of the DC compartment is too high due to thermal runaway of the battery pack, the internal pressure of the DC compartment can be discharged outward through the explosion relief valve, thereby reducing the internal pressure of the DC compartment.

[0021] The above technical solution further includes shutters, which are arranged on the AC front cabinet door and the AC rear cabinet door.

[0022] By providing shutters on the AC front cabinet door and the AC rear cabinet door, the heat inside the DC compartment can be discharged through the shutters, which has a heat dissipation effect on the AC compartment.

[0023] The above technical solution also includes a fire water interface, which is provided on the cabinet body, and the fire water interface is connected to the DC warehouse.

[0024] When a fire occurs in the DC bin, water can be injected into the DC bin by connecting an external water source to the fire water interface, thereby reducing the spread of the fire and minimizing losses.

[0025] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 This is a front view structural diagram of an embodiment of the utility model;

[0028] Figure 2 This is a rear structural diagram of an embodiment of the utility model;

[0029] Figure 3 This is a schematic diagram of the internal structure of an embodiment of the utility model;

[0030] Figure 4 This is a schematic diagram of the cabinet structure of an embodiment of the utility model;

[0031] in, Figures 1 to 4 The corresponding relationship between the reference numerals and component names is as follows:

[0032] 1. Air-cooled and liquid-cooled main unit; 2. High-voltage box; 3. Fire protection system; 4. Bidirectional energy storage converter; 5. Battery pack; 6. AC front cabinet door; 7. DC cabinet door; 8. Emergency stop switch button; 9. Inlet valve; 10. AC rear cabinet door; 11. Fire water interface; 12. Exhaust valve; 13. Explosion relief valve; 14. Column; 15. Cabinet body; 151. AC compartment; 152. DC compartment; 16. Support beam; 17. Mounting plate; 18. Through hole; 19. Shutter. DETAILED DESCRIPTION

[0033] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0035] Refer to the following Figures 1 to 4 A lithium battery energy storage device according to some embodiments of the present invention is described.

[0036] like Figure 3 As shown, an embodiment of the present invention provides a lithium battery energy storage device, including a cabinet 15, an air-cooled liquid-cooled host 1, a high-voltage box 2, a fire protection system 3, a bidirectional energy storage converter 4 and a battery pack 5.

[0037] Specifically, a DC warehouse 152 and an AC warehouse 151 are provided inside the cabinet 15; an air-cooled liquid-cooled host 1 is provided inside the AC warehouse 151; a high-voltage box 2 is provided inside the AC warehouse 151, and the high-voltage box 2 is provided below the air-cooled liquid-cooled host 1; a fire protection system 3 is provided inside the AC warehouse 151, and the fire protection system 3 is provided on one side of the high-voltage box 2; a bidirectional energy storage inverter 4 is provided inside the AC warehouse 151, and the bidirectional energy storage inverter 4 is provided on the side of the high-voltage box 2 close to the fire protection system 3; multiple battery packs 5 are provided inside the DC warehouse 152.

[0038] A DC compartment 152 and an AC compartment 151 are provided inside the cabinet 15. The DC compartment 152 is located below the AC compartment 151. A horizontal partition is provided inside the AC compartment 151, which divides the AC compartment 151 into an upper layer and a lower layer. The upper layer is provided with an air-cooled liquid cooling host 1, which is fixedly installed in the middle of the upper surface of the partition. The lower layer is provided with a high-voltage box 2, a fire protection system 3 and a bidirectional energy storage converter 4. The high-voltage box 2 is located on the left side of the lower layer. The front and rear ends of the high-voltage box 2 are respectively flush with the front and rear ends of the AC compartment 151, which makes it convenient for operators to connect the high-voltage box 2. The fire protection system 3 is arranged at the front end of the right side of the lower layer, and the bidirectional energy storage converter 4 is arranged at the rear end of the right side of the lower layer. Battery packs 5 are arranged from top to bottom inside the DC compartment 152. Through the above arrangement, the air-cooled liquid-cooled host 1, the high-voltage box 2, the fire protection system 3, the bidirectional energy storage converter 4 and the multiple battery packs 5 can be compactly installed inside the cabinet 15. The shape of the cabinet 15 is approximately a rectangular parallelepiped, with a width of 1000mm-1100mm, a length of 1400mm-1500mm, and a height of 2200mm-2400mm. Compared with the existing technology, the volume of the cabinet 15 is reduced, so that more cabinets 15 can be placed on the same floor area, thereby storing more electricity and improving space utilization.

[0039] like Figure 3 and Figure 4 As shown, in one embodiment of the present invention, it also includes a plurality of columns 14, which are fixedly connected to the inner walls on both sides of the cabinet 15, and the air-cooled liquid-cooled host 1 and the bidirectional energy storage converter 4 are installed on the columns 14; a plurality of support beams 16 are provided on both sides of the DC warehouse 152, and the plurality of support beams 16 are spaced apart from top to bottom, and each of the support beams 16 is connected to the plurality of columns 14 on the same side.

[0040] A plurality of columns 14 are fixedly connected to the inner walls on both sides of the cabinet 15. The columns 14 are vertically arranged, and the lower ends of the columns 14 are fixedly connected to the bottom of the DC warehouse 152 and the lower ends are fixedly connected to the top of the AC warehouse 151. A plurality of support beams 16 are spaced apart from top to bottom on both sides of the inside of the DC warehouse 152. Each support beam 16 is connected to a plurality of columns 14 on the same side. The structural strength of the cabinet 15 frame can be improved by cooperating with the columns 14 and the support beams 16. The air-cooled liquid-cooled host 1 and the bidirectional energy storage converter 4 are fixedly installed on the columns 14 by bolts, which can improve the stability of the air-cooled liquid-cooled host 1 and the bidirectional energy storage converter 4.

[0041] like Figure 3 As shown, in one embodiment of the present invention, a plurality of brackets are further included, which are arranged inside the DC warehouse 152. The plurality of brackets are arranged in sequence from top to bottom, and the plurality of battery packs 5 are respectively fixedly connected to the plurality of brackets.

[0042] By arranging multiple brackets from top to bottom in the DC bin 152 and stacking the multiple support frames together, each battery pack 5 can be placed on each bracket respectively, thereby ensuring that each two adjacent battery packs 5 do not contact each other, avoiding overheating and damage of the battery packs 5 caused by contact between each other.

[0043] like Figure 3 As shown, in one embodiment of the present invention, a mounting plate 17 is further included, which is arranged in the AC compartment 151, and the mounting plate 17 is arranged on the side of the high-voltage box 2 close to the fire protection system 3, and the fire protection system 3 is arranged above the mounting plate 17. The mounting plate 17 is provided with a through hole 18 on the side close to the bidirectional energy storage converter 4.

[0044] By providing a mounting plate 17 at the front right side of the lower layer of the AC compartment 151, the fire protection system 3 is installed on the upper surface of the mounting plate 17, and a through hole 18 is opened on the side of the mounting plate 17 close to the bidirectional energy storage inverter 4, so that the heat generated by the bidirectional energy storage inverter 4 can pass through the through hole 18 and be discharged from the shutter 19, further reducing the heat accumulation in the AC compartment 151.

[0045] like Figures 1 to 4 As shown, in one embodiment of the present invention, it also includes an AC front cabinet door 6 and an AC rear cabinet door 10, which are respectively rotatably connected to both sides of the AC warehouse 151; and a DC cabinet door 7, which is rotatably connected to one side of the DC warehouse 152.

[0046] The AC front door 6 and AC rear door 10 are rotatably connected to the front and rear sides of the AC compartment 151, allowing operators to open the AC front door 6 and AC rear door 10 at any time to perform other tasks such as troubleshooting and wiring in the AC compartment 151. The rear side of the DC compartment 152 is closed, and the DC cabinet door 7 is rotatably connected to the front side of the DC compartment 152. When the battery pack 5 needs to be replaced or repaired, the DC cabinet door 7 can be opened at any time, reducing maintenance difficulties.

[0047] like Figure 1 As shown, in one embodiment of the present invention, an emergency stop switch button 8 is further included, which is provided on the DC cabinet door 7.

[0048] By providing an emergency stop switch button 8 on the DC cabinet door 7, when a device fails, the emergency stop switch button 8 can be pressed to suspend the operation of the entire cabinet 15, thereby improving the safety performance of the entire cabinet 15.

[0049] like Figure 1 and Figure 2 As shown, in one embodiment of the present invention, it further includes an air intake valve 9 provided on the DC cabinet door 7 ; and an air exhaust valve 12 provided on the DC cabinet door 7 .

[0050] By providing an air intake valve 9 and an exhaust valve 12 on the DC cabinet door 7, when the battery pack 5 suffers thermal runaway, the fire protection system 3 can control the operation of the air intake valve 9 and the exhaust valve 12 through the controller, and external gas can enter the DC bin 152 through the air intake valve 9. After the air pressure inside the DC bin 152 increases, the gas inside the DC bin 152 will be discharged from the outside of the DC bin 152 through the exhaust valve 12. In this process, the combustible gas inside the DC bin 152 will be discharged from the DC bin 152 through the exhaust valve 12, thereby avoiding the further expansion of the fire caused by the increase of combustible gas in the DC bin 152.

[0051] It should be noted that the fire protection system 3 described above is prior art. When a fire occurs in a single battery pack, the fire controller reports the fire alarm data when the fire detector reaches the specified level 1 alarm value. When the fire detector reaches the specified level 2 alarm value, the fire controller reports the fire alarm data and simultaneously activates the exhaust system. When the detector reaches the specified level 3 alarm value, the fire controller reports the fire alarm data, simultaneously shuts down the exhaust system, and activates the fire extinguishing device to extinguish the fire. Since the above processes are prior art, they will not be described in detail here.

[0052] like Figure 1 As shown, in one embodiment of the present invention, an explosion relief valve 13 is further included, which is provided on the DC cabinet door 7.

[0053] By providing an explosion relief valve 13 on the DC cabinet door 7, when the internal pressure of the DC bin 152 is too high after the battery pack 5 thermally runs away, the internal pressure of the DC bin 152 can be discharged outward through the explosion relief valve 13, reducing the internal pressure of the DC bin 152 and avoiding explosion due to excessive internal pressure of the DC bin 152.

[0054] like Figure 1 and Figure 2 As shown, in one embodiment of the present invention, it further includes shutters 19 provided on the AC front cabinet door 6 and the AC rear cabinet door 10 .

[0055] By providing shutters 19 on the AC front cabinet door 6 and the AC rear cabinet door 10 , the heat inside the DC compartment 152 can be discharged through the shutters 19 , thereby achieving a heat dissipation effect on the AC compartment 151 .

[0056] like Figure 2 As shown, in one embodiment of the present invention, a fire water interface 11 is further included, which is provided on the cabinet 15 , and the fire water interface 11 is connected to the DC warehouse 152 .

[0057] When a fire occurs in the DC bin 152 , water can be injected into the DC bin 152 by connecting an external water source to the fire water interface 11 , thereby reducing the spread of the fire and minimizing losses.

[0058] The utility model has the following advantages:

[0059] The air-cooled liquid-cooled host 1, the high-voltage box 2, the fire protection system 3, the bidirectional energy storage converter 4 and the plurality of battery packs 5 can be compactly installed inside the cabinet 15, thereby reducing the volume of the cabinet 15 and allowing more cabinets 15 to be placed on the same floor space, thereby allowing more energy to be stored and improving space utilization.

[0060] In this utility model, the terms "install," "connect," "connect," and "fix" should be understood in a broad sense. For example, "connect" can refer to a fixed connection, a detachable connection, or an integral connection; "connected" can refer to a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0061] In the description of the present invention, it should be understood that the terms "inside" and "outside" and the like indicate orientations or positional relationships based on the orientations 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 unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0062] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0063] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A lithium battery energy storage device, characterized in that: include: A cabinet (15) is provided with a DC compartment (152) and an AC compartment (151) therein; An air-cooled liquid-cooled host (1) is arranged inside the exchange chamber (151); A high-voltage box (2) is provided inside the AC compartment (151), and the high-voltage box (2) is provided below the air-cooled liquid-cooled main unit (1); A fire protection system (3) is provided inside the AC compartment (151), and the fire protection system (3) is provided on one side of the high-voltage box (2); A bidirectional energy storage converter (4) is provided inside the AC compartment (151), and the bidirectional energy storage converter (4) is provided on a side of the high-voltage box (2) close to the fire protection system (3); A plurality of battery packs (5) are arranged inside the DC bin (152).

2. The lithium battery energy storage device according to claim 1, characterized in that: Also includes: A plurality of columns (14) are fixedly connected to the inner walls on both sides of the cabinet (15), and the air-cooled liquid-cooled host (1) and the bidirectional energy storage converter (4) are installed on the columns (14); A plurality of support beams (16) are provided on both sides of the DC bin (152), the plurality of support beams (16) are spaced apart from top to bottom, and each support beam (16) is connected to a plurality of columns (14) on the same side.

3. The lithium battery energy storage device according to claim 1, characterized in that: Also includes: A plurality of brackets are arranged inside the DC bin (152), the plurality of brackets are arranged in sequence from top to bottom, and the plurality of battery packs (5) are respectively fixedly connected to the plurality of brackets.

4. The lithium battery energy storage device according to claim 1, characterized in that: Also includes: A mounting plate (17) is provided in the AC compartment (151), the mounting plate (17) being provided on a side of the high-voltage box (2) close to the fire protection system (3), the fire protection system (3) being provided above the mounting plate (17), and a through hole (18) being provided on a side of the mounting plate (17) close to the bidirectional energy storage converter (4).

5. The lithium battery energy storage device according to claim 1, characterized in that: Also includes: The AC front cabinet door (6) and the AC rear cabinet door (10) are rotatably connected to both sides of the AC compartment (151); The DC cabinet door (7) is rotatably connected to one side of the DC bin (152).

6. The lithium battery energy storage device according to claim 5, characterized in that: Also includes: An emergency stop switch button (8) is provided on the DC cabinet door (7).

7. The lithium battery energy storage device according to claim 5, characterized in that: Also includes: An air inlet valve (9) is provided on the DC cabinet door (7); The exhaust valve (12) is provided on the DC cabinet door (7).

8. The lithium battery energy storage device according to claim 5, characterized in that: Also includes: The explosion relief valve (13) is provided on the DC cabinet door (7).

9. The lithium battery energy storage device according to claim 5, characterized in that: Also includes: Shutters (19) are provided on the AC front cabinet door (6) and the AC rear cabinet door (10).

10. The lithium battery energy storage device according to claim 1, characterized in that: Also includes: A fire water interface (11) is provided on the cabinet (15), and the fire water interface (11) is in communication with the DC bin (152).

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