Energy storage device

Abstract

The utility model discloses an energy storage device. The energy storage device comprises an energy storage cabinet and an inverter. The energy storage cabinet comprises a base, and the base is provided with an extension part; the inverter and the energy storage cabinet are arranged at an interval, and the inverter is connected with the extension part. The structure of the energy storage device is optimized, the extension part is arranged on the base of the energy storage cabinet, the inverter is connected with the extension part, and the inverter and the energy storage cabinet are integrated into a whole, so that the integrated design of the energy storage device is realized, the inverter and the energy storage cabinet do not need to be transported separately, and the energy storage device is convenient to install and transport; the stability and reliability of the energy storage device in the transportation process are effectively improved, the use convenience of the energy storage device is improved, and the use experience of a user is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy storage device installation technical field especially is related to an energy storage device. BACKGROUND

[0002] In prior art, energy storage device includes energy storage cabinet and inverter (PCS) etc., when inverter is external, inverter and energy storage cabinet need to be fixed separately, which is inconvenient for installation and transportation of energy storage device. SUMMARY

[0003] The utility model discloses at least one of the technical problems in prior art is solved, for this, the purpose of the utility model is to provide an energy storage device, which is convenient for installation and transportation.

[0004] According to the energy storage device of the utility model embodiment, the energy storage device includes: energy storage cabinet and inverter, the energy storage cabinet includes base, the base is equipped with extension part, the inverter is spaced apart with the energy storage cabinet, and the inverter is connected with the extension part.

[0005] According to the energy storage device of the utility model embodiment, by optimizing the structure of energy storage device, the extension part is arranged on the base of energy storage cabinet, and the inverter is connected with the extension part, the inverter and energy storage cabinet are integrated into a whole, the integrated design of energy storage device is realized, the inverter and energy storage cabinet do not need to be transported separately, which is convenient for installation and transportation of energy storage device, effectively improves the stability and reliability in the transportation process of energy storage device, improves the convenience of energy storage device use, and improves the user's use experience.

[0006] In some embodiments, the extension part is detachably connected with the base, and / or the inverter is detachably connected with the extension part.

[0007] In some embodiments, a first wire slot is formed on the base, a second wire slot is formed on the extension part, the first wire slot and the second wire slot are in communication, and the energy storage device further includes a connection wire harness, which is arranged in the first wire slot and the second wire slot, one end of the connection wire harness is electrically connected with the energy storage cabinet, and the other end of the connection wire harness is electrically connected with the inverter.

[0008] In some embodiments, at least one side of the second wire slot is open to form an opening, the opening is located between the inverter and the energy storage cabinet, and the base includes a baffle, which is arranged at the opening, and the baffle can open and close the opening.

[0009] In some embodiments, the extension comprises a plurality of sheet metal pieces connected end to end, and a fixing hole is formed on a side surface of the inverter adjacent to the extension.

[0010] In some embodiments, the energy storage device further comprises a connecting bracket arranged between the inverter and the energy storage cabinet, the connecting bracket being arranged apart from the base along the height direction of the energy storage cabinet, and two ends of the connecting bracket being connected to the inverter and the energy storage cabinet, respectively.

[0011] In some embodiments, the connecting bracket comprises a first connecting piece and a second connecting piece, one end of the first connecting piece being connected to the top of the inverter, one end of the second connecting piece being connected to the side wall of the energy storage cabinet adjacent to the inverter, and the other end of the first connecting piece and the other end of the second connecting piece being connected to each other.

[0012] In some embodiments, the first connecting piece comprises a first flange bent towards the inverter along the height direction of the energy storage cabinet, and the first flange is located at the top of the inverter, and the first flange is provided with at least one first mounting hole, and a first fastener is adapted to pass through the first mounting hole along the height direction of the energy storage cabinet to be connected to the inverter.

[0013] In some embodiments, the second connecting piece comprises a second flange parallel to the side surface of the energy storage cabinet adjacent to the inverter, and the second flange is provided with at least one second mounting hole, and a second fastener is adapted to pass through the second mounting hole along the arrangement direction of the energy storage cabinet and the inverter to be connected to the energy storage cabinet.

[0014] In some embodiments, at least part of the first connecting piece abuts against the side surface of the inverter adjacent to the energy storage cabinet.

[0015] The additional aspects and advantages of the present application will be partially given in the following description, some will become apparent from the following description, or will be understood by those skilled in the art through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0017] Figure 1 is a schematic view of the extension and the base assembled according to the embodiments of the present application;

[0018] Figure 2 is a partial schematic view of the extension and the base assembled according to the embodiments of the present application;

[0019] Figure 3 is a schematic view of a connecting support according to an embodiment of the present application;

[0020] Figure 4 is a schematic view of an energy storage device according to an embodiment of the present application.

[0021] Reference signs:

[0022] 100, energy storage device;

[0023] 10, energy storage cabinet; 11, energy storage cabinet body; 12, base; 13, inverter;

[0024] 20, extension; 21, first extension; 22, second extension; 23, first wire slot; 24, second wire slot; 25, baffle; 26, fixing hole; 27, connecting part;

[0025] 30, connecting support; 31, first connecting piece; 32, first flange; 33, first mounting hole; 34, second connecting piece; 35, second flange; 36, second mounting hole; 37, third flange; 38, fourth flange; 39, fifth flange;

[0026] A, first direction; B, second direction. DETAILED DESCRIPTION

[0027] The embodiments of the present application will be described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary, and the following description is made with reference to Figures 1-4 The energy storage device 100 according to an embodiment of the present application is described below. The energy storage device 100 comprises: an energy storage cabinet 10 and an inverter 13.

[0028] Specifically, in combination with Figure 1 and Figure 4 , the energy storage cabinet 10 comprises a base 12, and the base 12 is provided with an extension 20; the inverter 13 is arranged spaced apart from the energy storage cabinet 10, and the inverter 13 is connected with the extension 20.

[0029] In the present embodiment, the energy storage cabinet 10 comprises an energy storage cabinet body 11 and a base 12, the energy storage cabinet body 11 is arranged on the base 12 along the height direction of the energy storage cabinet 10 and forms a detachable connection with the base 12, the shape of the energy storage cabinet body 11 is matched with the base 12, and the extension 20 is arranged on one side of the base 12 along the first direction A shown in FIG. 1, and the inverter 13 is arranged on the extension 20 along the height direction of the energy storage cabinet 10, and the inverter 13 is arranged spaced apart from the energy storage cabinet 10 along the first direction A. Figure 1 In the present embodiment, the energy storage cabinet 10 comprises an energy storage cabinet body 11 and a base 12, the energy storage cabinet body 11 is arranged on the base 12 along the height direction of the energy storage cabinet 10 and forms a detachable connection with the base 12, the shape of the energy storage cabinet body 11 is matched with the base 12, and the extension 20 is arranged on one side of the base 12 along the first direction A shown in FIG. 1, and the inverter 13 is arranged on the extension 20 along the height direction of the energy storage cabinet 10, and the inverter 13 is arranged spaced apart from the energy storage cabinet 10 along the first direction A.

[0030] According to the energy storage device 100, the extension part 20 is arranged on the base 12 of the energy storage cabinet 10, and the inverter 13 is connected with the extension part 20, so that the inverter 13 and the energy storage cabinet 10 are integrated as a whole, the integration design of the energy storage device 100 is realized, the inverter 13 and the energy storage cabinet 10 do not need to be transported separately, the installation and transportation of the energy storage device 100 are facilitated, the stability and reliability of the energy storage device 100 in the transportation process are effectively improved, the convenience of use of the energy storage device 100 is improved, and the use experience of users is improved.

[0031] According to some embodiments of the utility model, the extension part 20 and the base 12 are detachably connected. That is, the extension part 20 is detachably connected with the base 12 along the first direction A adjacent to one end of the base 12. In the manufacturing process, the extension part 20 and the base 12 can be two independent components. In this way, the installation efficiency of the extension part 20 can be improved, and at the same time, the maintenance and replacement of the extension part 20 and the base 12 are facilitated, the processing technology of the energy storage device 100 is reduced, and the cost is reduced.

[0032] Optionally, the extension part 20 and the base 12 are integrally formed. In the manufacturing process, the extension part 20 and the base 12 can be integrally manufactured. In this way, the structural strength of the extension part 20 and the base 12 can be improved, thereby improving the overall structural strength of the energy storage device 100 and improving the production efficiency of the energy storage device 100.

[0033] Optionally, the inverter 13 and the extension part 20 are detachably connected. That is, the inverter 13 is detachably connected with the extension part 20 along the height direction of the energy storage cabinet 10 adjacent to one end of the extension part 20. In this way, the installation efficiency of the inverter 13 can be improved, and at the same time, the maintenance and replacement of the inverter 13 are facilitated.

[0034] According to some embodiments of the utility model, as shown in Figure 1 and Figure 2 , the base 12 is formed with a first wire slot 23, the extension part 20 is formed with a second wire slot 24, the first wire slot 23 and the second wire slot 24 are communicated; the energy storage device 100 further comprises: a connection wire harness, the connection wire harness is arranged in the first wire slot 23 and the second wire slot 24, one end of the connection wire harness is electrically connected with the energy storage cabinet 10, and the other end of the connection wire harness is electrically connected with the inverter 13.

[0035] The first wire slot 23 extends along the second direction B as shown in Figure 1 , the second wire slot 24 extends along the first direction A, the ends of the first wire slot 23 and the second wire slot 24 adjacent to each other are perpendicular to each other and communicated, the first wire slot 23 and the second wire slot 24 are suitable for installing the connection wire harness, and the energy storage cabinet 10 and the inverter 13 are electrically connected through the connection wire harness. Optionally, the connection wire harness is a power line and a communication line.

[0036] Therefore, by arranging the first wire slot 23 and the second wire slot 24, installation space can be provided for the connection wire harness, the connection wire harness can be protected, wear between the connection wire harness and other structural members can be avoided, meanwhile, the space utilization inside the base 12 and the extension part 20 can be improved, the integration of the energy storage device 100 can be improved, by arranging the connection wire harness, electrical connection between the energy storage cabinet 10 and the inverter 13 can be realized, so that the energy storage device 100 can realize conversion and storage of electrical energy.

[0037] According to some embodiments of the present utility model, as shown in Figure 1 and Figure 2 , at least one side of the second wire slot 24 is open to form an opening, the opening is located between the inverter 13 and the energy storage cabinet 10, and the base 12 comprises a baffle 25, the baffle 25 is arranged at the opening, and the baffle 25 can open and close the opening.

[0038] The extension part 20 comprises a first extension part 21 and a second extension part 22, the first extension part 21 and the second extension part 22 are aligned along a first direction A, the first extension part 21 is adapted to form detachable connection with the inverter 13, the first extension part 21 is matched with the shape of the inverter 13, the second extension part 22 is arranged between the first extension part 21 and the base 12 along the first direction A, and the second extension part 22 forms detachable connection with the base 12 at one end adjacent to the base 12 along the first direction A. In the embodiment, both ends of the second extension part 22 along the height direction of the energy storage cabinet 10 are open to form openings, the baffle 25 is arranged at the opening adjacent to the inverter 13 along the height direction of the energy storage cabinet 10, and the baffle 25 is matched with the shape of the opening.

[0039] Therefore, by arranging the baffle 25 at the opening, the connection wire harness of the second wire slot 24 in the second extension part 22 can be covered along the height direction of the energy storage cabinet 10, the connection wire harness can be prevented from being exposed outside the energy storage device 100, the sealing property and the waterproof property of the energy storage device 100 can be improved, meanwhile, the baffle 25 can open and close the opening, so that the connection wire harness can be conveniently maintained and inspected.

[0040] Optionally, the second extension part 22 is provided with a connecting part 27 at both ends along a second direction B, the two connecting parts 27 are symmetrically distributed along the first direction A, and both ends of the connecting part 27 are connected with the base 12 and the extension part 20. Therefore, by arranging the connecting part 27, the connection strength of the base 12 and the extension part 20 can be improved, and meanwhile, the transportation of the energy storage device 100 can be facilitated.

[0041] According to some embodiments of the present utility model, as shown in Figure 1 and Figure 2As shown, the extension part 20 comprises a plurality of sheet metal parts connected end to end, and a fixing hole 26 is formed in the sheet metal part adjacent to one side surface of the inverter 13, and the inverter 13 is connected to the extension part 20 at the fixing hole 26.

[0042] A plurality of fixing holes 26 are formed in the first extension part 21 adjacent to one side surface of the inverter 13 along the height direction of the energy storage cabinet 10, and the plurality of fixing holes 26 are arranged at intervals along the circumferential direction of the first extension part 21, and the inverter 13 is adjacent to one end of the first extension part 21 along the height direction of the energy storage cabinet 10, and the bolt is arranged in the fixing hole 26 to realize the detachable connection of the inverter 13 and the first extension part 21.

[0043] Optionally, a plurality of fixing holes 26 are formed in the second extension part 22 adjacent to one side surface of the inverter 13 along the height direction of the energy storage cabinet 10, and the plurality of fixing holes 26 are arranged at intervals along the circumferential direction of the second extension part 22, and the screw is arranged in the fixing hole 26 to realize the detachable connection of the baffle 25 and the second extension part 22, thereby realizing the opening and closing of the opening.

[0044] Optionally, the base 12 comprises a plurality of sheet metal parts connected end to end, and a fixing hole 26 is formed in the sheet metal part adjacent to one side surface of the energy storage cabinet body 11, and the energy storage cabinet body 11 is connected to the base 12 at the fixing hole 26.

[0045] Therefore, the extension part 20 can improve the structural strength of the extension part 20 by adopting the sheet metal part, thereby improving the overall structural strength and reliability of the energy storage device 100, and the fixing hole 26 is formed in the sheet metal part adjacent to one side surface of the inverter 13, which facilitates the detachable connection of the inverter 13 and the extension part 20, improves the installation efficiency of the inverter 13, and thereby improves the overall installation efficiency of the energy storage device 100.

[0046] According to some embodiments of the present application, Figure 3 As shown, the energy storage device 100 further comprises a connecting bracket 30 arranged between the inverter 13 and the energy storage cabinet 10, and the connecting bracket 30 and the base 12 are arranged at intervals along the height direction of the energy storage cabinet 10, and the two ends of the connecting bracket 30 are connected to the inverter 13 and the energy storage cabinet 10, respectively.

[0047] The connecting bracket 30 is arranged between the inverter 13 and the energy storage cabinet 10 along the first direction A, and the second extension part 22 of the connecting bracket 30 is arranged at intervals along the height direction of the energy storage cabinet 10, and one end of the connecting bracket 30 adjacent to the inverter 13 along the first direction A is connected to the inverter 13, and the other end of the connecting bracket 30 adjacent to the energy storage cabinet 10 along the first direction A is connected to the energy storage cabinet 10.

[0048] Therefore, by arranging the connecting bracket 30 between the inverter 13 and the energy storage cabinet 10, the connecting strength between the inverter 13 and the energy storage cabinet 10 can be improved, the structure damage caused by the shaking of the inverter 13 and the energy storage cabinet 10 during transportation can be avoided, the stability and reliability of the energy storage device 100 during transportation can be improved, and the structural strength of the energy storage device 100 can be improved.

[0049] According to some embodiments of the present application, as shown in Figure 3 The connecting bracket 30 comprises a first connecting piece 31 and a second connecting piece 34, one end of the first connecting piece 31 is connected with the top of the inverter 13, one end of the second connecting piece 34 is connected with the side wall of the energy storage cabinet 10 adjacent to the inverter 13, and the other end of the first connecting piece 31 and the other end of the second connecting piece 34 are connected with each other.

[0050] The first connecting piece 31 is connected with the top of the inverter 13 at one end adjacent to the inverter 13 along the first direction A, the second connecting piece 34 is connected with the side wall of the energy storage cabinet 10 adjacent to the inverter 13 at one end along the first direction A, and the other end of the first connecting piece 31 is connected with the other end of the second connecting piece 34 along the first direction A adjacent to the inverter 13.

[0051] Therefore, by arranging the first connecting piece 31 and the second connecting piece 34, the connecting bracket 30 can be connected with the inverter 13 and the energy storage cabinet 10 respectively, so as to improve the connecting strength between the inverter 13 and the energy storage cabinet 10.

[0052] According to some embodiments of the present application, as shown in Figure 3 The first connecting piece 31 comprises a first flange 32, the first flange 32 is bent towards the inverter 13 along the height direction of the energy storage cabinet 10, and the first flange 32 is located at the top of the inverter 13; the first flange 32 is formed with at least one first mounting hole 33, and the first fastener is adapted to be arranged through the first mounting hole 33 along the height direction of the energy storage cabinet 10 and connected with the inverter 13.

[0053] The first flange 32 extends along the second direction B, and the first flange 32 is attached to the top of the inverter 13 along the height direction of the energy storage cabinet 10 adjacent to one side surface of the inverter 13, both ends of the first flange 32 along the second direction B are bent towards the inverter 13 along the height direction of the energy storage cabinet 10, the first mounting hole 33 penetrates through the first flange 32 along the height direction of the energy storage cabinet 10, and the first fastener is arranged through the first mounting hole 33 along the height direction of the energy storage cabinet 10 to connect the first flange 32 and the top of the inverter 13. In this embodiment, the first flange 32 is formed with two first mounting holes 33, and the two first mounting holes 33 are arranged at intervals along the second direction B.

[0054] Optionally, the first fastener is a lifting ring bolt.

[0055] Thus, by bending the first flange 32 along the height direction of the energy storage cabinet 10 towards the inverter 13, the contact area of the first flange 32 with the inverter 13 can be increased, and the structural strength and torsion resistance of the first connecting piece 31 can be improved. By providing the first mounting hole 33, detachable connection of the first flange 32 of the first connecting piece 31 with the top of the inverter 13 can be achieved, and the reliability and stability of the connection of the first connecting piece 31 with the inverter 13 can be improved.

[0056] According to some embodiments of the present application, as shown in Figure 3 The second connecting piece 34 includes a second flange 35, and the second flange 35 is parallel to a side surface of the energy storage cabinet 10 adjacent to the inverter 13. The second flange 35 is formed with at least one second mounting hole 36, and the second fastener is arranged through the second mounting hole 36 along the arrangement direction of the energy storage cabinet 10 and the inverter 13 to connect with the energy storage cabinet 10.

[0057] The second flange 35 extends along the second direction B, and the second flange 35 is adjacent to the side surface of the energy storage cabinet 10 along the first direction A and is attached to the side surface of the energy storage cabinet 10 adjacent to the inverter 13. The second mounting hole 36 penetrates the second flange 35 along the first direction A, and the second fastener is arranged through the second mounting hole 36 along the first direction A to connect the second flange 35 and the side surface of the energy storage cabinet 10 adjacent to the inverter 13. In this embodiment, the second mounting hole 36 is multiple, and the multiple second mounting holes 36 are arranged at intervals along the second direction B.

[0058] Optionally, the second fastener can be a screw.

[0059] Thus, by arranging the second flange 35 parallel to the side surface of the energy storage cabinet 10 adjacent to the inverter 13, the attachment of the second flange 35 to the side surface of the energy storage cabinet 10 adjacent to the inverter 13 can be improved, the contact area of the second connecting piece 34 with the inverter 13 can be increased, and by providing the second mounting hole 36, detachable connection of the second flange 35 of the second connecting piece 34 with the energy storage cabinet 10 can be achieved, and the reliability and stability of the connection of the second connecting piece 34 with the energy storage cabinet 10 can be improved.

[0060] Optionally, the second connecting piece 34 includes two third flanges 37, and the two third flanges 37 are arranged at both ends of the second flange 35 along the second direction B. The third flange 37 extends along the first direction A, and the two ends of the third flange 37 along the first direction A are connected with the first connecting piece 31 and the second flange 35, respectively. Thus, by arranging the third flange 37, the structural strength and torsion resistance of the second connecting piece 34 can be improved, thereby improving the structural strength of the connecting bracket 30 and the stability and reliability of the energy storage device 100 during transportation and installation.

[0061] According to some embodiments of the present application, as shown inFigure 3 As shown, at least part of the first connecting piece 31 abuts against the side surface of the energy storage cabinet 10 adjacent to the inverter 13.

[0062] The first connecting piece 31 further comprises a fourth flange 38 and a fifth flange 39, the fourth flange 38 extends along the second direction B, the fourth flange 38 is connected with the first flange 32 along the height direction of the energy storage cabinet 10 adjacent to one end of the first flange 32, and the fourth flange 38 is parallel to and abuts against the side surface of the inverter 13 adjacent to the side surface of the energy storage cabinet 10 along the first direction A, and the fifth flange 39 is connected with the fourth flange 38 and the third flange 37 along the two ends of the first direction A respectively. Therefore, the contact area of the first connecting piece 31 and the inverter 13 can be further increased, so as to further improve the reliability and stability of the connection of the first connecting piece 31 and the inverter 13, improve the structural strength and torsional resistance of the first connecting piece 31, thereby improving the structural strength of the connecting bracket 30 and the stability and reliability in the transportation and installation process of the energy storage device 100.

[0063] In the description of the utility model, it is to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0064] In the description of the utility model, "first feature" and "second feature" can include one or more features. In the description of the utility model, "multiple" means two or more. In the description of the utility model, "above" or "below" the first feature of the second feature can include direct contact between the first and second features, or can include indirect contact between the first and second features through another feature therebetween. In the description of the utility model, "above", "above" and "above" of the first feature of the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature.

[0065] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example.

[0066] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An energy storage device, characterized by, The utility model relates to a kind of energy storage cabinet and inverter, including: Energy storage cabinet, the energy storage cabinet includes base, the base is equipped with extension part; Inverter, the inverter is spaced apart from the energy storage cabinet, and the inverter is connected with the extension part.

2. The energy storage device of claim 1, wherein, The extension part is detachably connected with the base, and / or, The inverter is detachably connected with the extension part.

3. The energy storage device of claim 1, wherein, First wire slot is formed on the base, and the extension part is formed with second wire slot, and the first wire slot and the second wire slot are communicated. Further comprising: connecting wire harness, the connecting wire harness is arranged in the first wire slot and the second wire slot, one end of the connecting wire harness is electrically connected with the energy storage cabinet, and the other end of the connecting wire harness is electrically connected with the inverter.

4. The energy storage device of claim 3, wherein, At least one side of the second wire slot is open to form an opening, and the opening is located between the inverter and the energy storage cabinet, and the base comprises: Baffle, the baffle is arranged at the opening, and the baffle can open and close the opening.

5. The energy storage device of claim 1, wherein, The extension part includes a plurality of sheet metal parts, and the plurality of sheet metal parts are connected head to tail, and a fixing hole is formed adjacent to one side surface of the inverter, and the inverter is connected with the extension part at the fixing hole.

6. The energy storage device of any one of claims 1-5, wherein, Further comprising: Connecting bracket, the connecting bracket is arranged between the inverter and the energy storage cabinet, and the connecting bracket is spaced apart from the base along the height direction of the energy storage cabinet, and both ends of the connecting bracket are connected with the inverter and the energy storage cabinet respectively.

7. The energy storage device of claim 6, wherein, The connecting bracket comprises: First connecting piece, one end of the first connecting piece is connected with the top of the inverter; Second connecting piece, one end of the second connecting piece is connected with the side wall of the energy storage cabinet adjacent to the inverter, and the other end of the first connecting piece and the other end of the second connecting piece are connected with each other.

8. The energy storage device of claim 7, wherein, The first connecting piece includes a first flange, and the first flange is bent towards the inverter along the height direction of the energy storage cabinet, and the first flange is located at the top of the inverter. The first flange is formed with at least one first mounting hole, and a first fastener is adapted to pass through the first mounting hole and connect with the inverter along the height direction of the energy storage cabinet.

9. The energy storage device of claim 7, wherein, The second connecting piece includes a second flange, and the second flange is parallel to the side surface of the energy storage cabinet adjacent to the inverter. The second flange is formed with at least one second mounting hole, and a second fastener is adapted to pass through the second mounting hole and connect with the energy storage cabinet along the arrangement direction of the energy storage cabinet and the inverter.

10. The energy storage device of claim 7, wherein, At least part of the first connecting piece abuts against the side surface of the inverter adjacent to the energy storage cabinet.

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