Energy Storage System

Abstract

The present application provides an energy storage system, which includes an energy storage cabinet, the energy storage cabinet includes a cabinet body, a battery box and an electrical connection assembly, the cabinet body includes a support frame and a mounting plate connected to each other, the support frame has a storage layer, at least two storage layers are arranged in sequence along the vertical direction, and the side of the storage layer has an opening for the battery box to enter the storage layer; the electrical connection assembly includes a first electrical connector and a second electrical connector, the battery box includes a third electrical connector, the mounting plate is arranged on the side of the storage layer away from the opening, the first electrical connector is connected to the mounting plate, the first electrical connectors corresponding to different storage layers are connected to each other through the second electrical connector, and the second electrical connector is connected to the third electrical connector through the first electrical connector. The energy storage system of the present application has high production efficiency and low production cost.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage equipment, and in particular to an energy storage system. Background Art

[0002] A battery cabinet is a device used to store and release electrical energy. It is usually composed of a series of batteries that can store electrical energy and release it when needed. Battery cabinets play an important role in modern society.

[0003] In the related art, a battery cabinet may include a cabinet and a battery box. During the assembly process of the battery cabinet, the battery box needs to be installed on the cabinet first, and then the busbars between the battery boxes are connected to connect multiple battery boxes in series. Due to the constraints of the production process, this part of the work cannot be automated and requires manual wiring. Moreover, due to the large errors in manual operation, the wiring process quality is easily uneven, which leads to repeated rework, thus resulting in low production efficiency and high production costs of the battery cabinet. Utility Model Content

[0004] Based on this, the present application provides an energy storage system to solve the deficiencies in the related technology.

[0005] The energy storage system provided in the present application includes an energy storage cabinet, which includes a cabinet body, a battery box and an electrical connection assembly. The cabinet body includes a support frame and a mounting plate connected to each other. The support frame has a receiving layer, at least two receiving layers are arranged in sequence along the vertical direction, and the side of the receiving layer has an opening for the battery box to enter the receiving layer;

[0006] The electrical connection assembly includes a first electrical connection member and a second electrical connection member, the battery box includes a third electrical connection member, the mounting plate is arranged on the side of the containing layer away from the outlet, the first electrical connection member is connected to the mounting plate, the first electrical connection members corresponding to different containing layers are connected to each other through the second electrical connection member, and the second electrical connection member is connected to the third electrical connection member through the first electrical connection member.

[0007] In a possible implementation, the first electrical connector includes a mounting portion, and the mounting portion is fixedly connected to the mounting plate.

[0008] In a possible implementation, the energy storage system of the present application also includes a first threaded connector and a second threaded connector, the mounting portion has a first connecting hole, the mounting plate has a second connecting hole, and the first threaded connector passes through the first connecting hole and the second connecting hole in sequence to be threadedly connected with the second threaded connector.

[0009] In a possible implementation, the first electrical connector further includes an electrical connection portion, which is connected to the mounting portion;

[0010] The electrical connection portion includes a first connection end and a second connection end connected to each other. The first connection end is located on the side of the mounting plate facing away from the opening, and the second connection end is located on the side of the mounting plate facing the opening. The first connection end is connected to the second electrical connector, and the second connection end is connected to the third electrical connector.

[0011] In a possible implementation, the first connection end is fixedly connected to the second electrical connection member, and the second connection end is detachably connected to the third electrical connection member.

[0012] In one possible implementation, the energy storage system of the present application also includes a third threaded connector and a fourth threaded connector, the first connection end has a third connection hole, the second electrical connector has a fourth connection hole, and the third threaded connector passes through the third connection hole and the fourth connection hole in sequence to be threadedly connected to the fourth threaded connector.

[0013] In a possible implementation, the battery box also includes a box body, the third electrical connector includes an insulating shell and an electrical plug-in portion, the insulating shell is connected to the box body, the electrical plug-in portion is arranged in the insulating shell, and the second connection end is plugged into the electrical plug-in portion.

[0014] In a possible implementation, the mounting portion is made of insulating material.

[0015] In a possible implementation, there is one energy storage cabinet, and the second electrical connector includes a first copper bar and a second copper bar, the first copper bar connects two adjacent battery boxes, and the second copper bar connects the first battery box and the last battery box of the plurality of battery boxes.

[0016] In a possible implementation, the number of energy storage cabinets is at least two, and the second electrical connector includes a third copper bar and a fourth copper bar, the third copper bar connects two adjacent battery boxes of the same energy storage cabinet, and the fourth copper bar connects the battery boxes of two adjacent energy storage cabinets.

[0017] The energy storage system provided in the present application includes an energy storage cabinet, which includes a cabinet body, a battery box and an electrical connection assembly. The cabinet body includes a support frame and a mounting plate. The support frame includes a receiving layer, the receiving layer includes an opening, the electrical connection assembly includes a first electrical connector and a second electrical connector, and the battery box includes a third electrical connector. By setting a battery box for storing electric energy, by setting an opening for the battery box to enter the containing layer, by setting a mounting plate for pre-installing the first electrical connector, by setting the first electrical connector for connecting the second electrical connector and the third electrical connector, by setting the second electrical connector for connecting the first electrical connector located on different mounting plates, and by setting the third electrical connector for establishing an electrical connection between the battery box and the first electrical connector, the energy storage system provided in the present application can pre-install the first electrical connector and the second electrical connector to the cabinet through the mounting plate. In the process of installing the battery box to the cabinet, the third electrical connector and the first electrical connector can be directly connected, and then the third electrical connector is connected to the second electrical connector, and then multiple battery boxes are connected in series. The assembly process does not require manual wiring, thereby improving the production efficiency of the energy storage system and reducing the production cost of the energy storage system.

[0018] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by the energy storage system provided by the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of the structure of the energy storage system provided in the embodiment of the present application;

[0021] Figure 2 for Figure 1 Exploded diagram of

[0022] Figure 3 for Figure 2 A partial enlarged view of the middle part;

[0023] Figure 4 for Figure 2 A partial enlarged view of point B in the middle;

[0024] Figure 5Another structural schematic diagram of the energy storage system provided in an embodiment of the present application.

[0025] Description of reference numerals:

[0026] 10-energy storage cabinet; 100-cabinet; 110-support frame; 120-mounting plate; 200-battery box; 210-third electrical connector; 211-insulating shell; 212-electrical plug-in part; 220-box; 300-electrical connection assembly; 310-first electrical connector; 311-mounting part; 312-electrical connection part; 320-second electrical connector; 321-first copper bar; 322-second copper bar; 323-third copper bar; 324-fourth copper bar. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme in the embodiment of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application. The embodiments of the present application are described in detail below in conjunction with the drawings.

[0028] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are orientations or positional relationships based on the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] The terms "first", "second", "third" (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein, for example.

[0031] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or display comprising a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, product, or display.

[0032] A battery cabinet is a device used to store and release electrical energy. It is usually composed of a series of batteries that can store electrical energy and release it when needed. Battery cabinets play an important role in modern society.

[0033] In the related art, a battery cabinet may include a cabinet and a battery box. During the assembly process of the battery cabinet, the battery box needs to be installed on the cabinet first, and then the busbars between the battery boxes are connected to connect multiple battery boxes in series. Due to the constraints of the production process, this part of the work cannot be automated and requires manual wiring. Moreover, due to the large errors in manual operation, the wiring process quality is easily uneven, which leads to repeated rework, thus resulting in low production efficiency and high production costs of the battery cabinet.

[0034] In view of the above problems, the present application provides an energy storage system, in which the first electrical connector is first pre-installed on the cabinet through a mounting plate, and then the second electrical connector is pre-installed on the first electrical connector. In this way, when the battery box is installed on the cabinet, the third electrical connector can be directly connected to the first electrical connector, and then the third electrical connector and the second electrical connector are connected. In this way, the manual wiring process is omitted, thereby effectively improving the production effect of the energy storage system and reducing the production cost of the energy storage system.

[0035] The specific implementation of the energy storage system provided in the embodiment of the present application is described in detail below with reference to the accompanying drawings.

[0036] Reference Figures 1 to 3 As shown, the energy storage system provided in the present application includes an energy storage cabinet 10, which includes a cabinet body 100, a battery box 200 and an electrical connection assembly 300. The cabinet body 100 includes a support frame 110 and a mounting plate 120 that are connected to each other. The support frame 110 has a containing layer, at least two containing layers are arranged in sequence along the vertical direction, and the side of the containing layer has an opening for the battery box 200 to enter the containing layer.

[0037] The electrical connection assembly 300 includes a first electrical connection member 310 and a second electrical connection member 320, the battery box 200 includes a third electrical connection member 210, the mounting plate 120 is arranged on the side of the accommodation layer away from the opening, the first electrical connection member 310 is connected to the mounting plate 120, the first electrical connection members 310 corresponding to different accommodation layers are connected to each other through the second electrical connection member 320, and the second electrical connection member 320 is connected to the third electrical connection member 210 through the first electrical connection member 310.

[0038] In the present application, the cabinet 100 is used to install the battery box 200, so as to integrate multiple battery boxes 200 into one cabinet 100, thereby forming an energy storage cabinet 10. The battery box 200 is used for charging and discharging, thereby enabling the energy storage cabinet 10 to realize the energy storage function. The electrical connection assembly 300 is used to establish an electrical connection between each battery box 200, and between the battery box 200 and an external device, thereby enabling the external device to charge the battery box 200, or the battery box 200 to power the external device.

[0039] Specifically, the cabinet 100 may include a support frame 110 and a mounting plate 120, the support frame 110 has a containing layer, and at least two containing layers are arranged in sequence along the vertical direction. In this way, the cabinet 100 can install at least two battery boxes 200, and the side of the containing layer has an opening, so that when the battery box 200 is installed in the cabinet 100, it is convenient to enter the containing layer through the opening, and the mounting plate 120 is connected to the side of the containing layer away from the opening.

[0040] The electrical connection assembly 300 may include a first electrical connector 310 and a second electrical connector 320, the battery box 200 may include a third electrical connector 210, the mounting plate 120 may be used to connect the first electrical connector 310, the first electrical connector 310 may be used to connect the second electrical connector 320 and the third electrical connector 210, the second electrical connector 320 may connect the first electrical connector 310 located in different containing layers, so that after the third electrical connector 210 of each battery box 200 is connected to the first electrical connector 310, multiple battery boxes 200 can be connected in series through the first electrical connector 310 and the second electrical connector 320.

[0041] Each receiving layer may be provided with two first electrical connectors 310, and one of the two first electrical connectors 310 is a positive electrode and the other is a negative electrode. The second electrical connector 320 may connect the first electrical connectors 310 of the same polarity in two adjacent receiving layers, thereby connecting the battery boxes 200 located in two adjacent receiving layers in series.

[0042] Before installing the battery box 200 to the cabinet 100, the first electrical connector 310 and the second electrical connector 320 can be pre-installed on the mounting plate 120, and then the battery box 200 is pushed into the accommodation layer through the opening. After the battery box 200 completely enters the accommodation layer, the third electrical connector 210 can be connected to the first electrical connector 310, thereby connecting the third electrical connector 210 and the second electrical connector 320. In this way, the first electrical connector 310, the second electrical connector 320 and the third electrical connector 210 are connected to each other for current to pass through, and the first electrical connector 310, the second electrical connector 320 and the third electrical connector 210 are all located on the side of the accommodation layer away from the opening, that is, the back of the energy storage cabinet 10, thereby avoiding the second electrical connector 320 being installed on the front of the energy storage cabinet 10 and causing damage and leakage, thereby improving the safety of the energy storage cabinet 10.

[0043] The pre-assembly of the first electrical connector 310 and the second electrical connector 320 can be completed by automated equipment, which can improve assembly efficiency.

[0044] Compared with the assembly process in the prior art, the energy storage system provided in the embodiment of the present application changes the assembly process of the energy storage cabinet 10 by adding a mounting plate 120 to the support frame 110 and adding a first electrical connector 310, thereby eliminating the existing manual wiring process, thereby improving the assembly efficiency of the energy storage cabinet 10, thereby improving the production efficiency of the energy storage system and reducing the production cost of the energy storage system.

[0045] The energy storage system provided by the embodiment of the present application includes an energy storage cabinet 10, and the energy storage cabinet 10 includes a cabinet body 100, a battery box 200 and an electrical connection assembly 300. The cabinet body 100 includes a support frame 110 and a mounting plate 120. The support frame 110 includes a receiving layer, and the receiving layer includes an opening. The electrical connection assembly 300 includes a first electrical connector 310 and a second electrical connector 320. The battery box 200 includes a third electrical connector 210. By arranging the battery box 200 for storing electrical energy, by arranging the opening for the battery box 200 to enter the receiving layer, by arranging the mounting plate 120 for pre-installing the first electrical connector 310, by arranging the first electrical connector 310 for connecting the second electrical connector 320 and the third connector, by arranging the second electrical connector 320 for connecting the first electrical connector 310 located on different mounting plates 120, and by arranging the third electrical connector 210 for establishing an electrical connection between the battery box 200 and the first electrical connector 310, the present application is implemented. The energy storage system provided in the embodiment can pre-install the first electrical connector 310 and the second electrical connector 320 to the cabinet 100 through the mounting plate 120. During the process of installing the battery box 200 to the cabinet 100, the third electrical connector 210 and the first electrical connector 310 can be directly connected, and then the third electrical connector 210 and the second electrical connector 320 can be connected, thereby connecting multiple battery boxes 200 in series. No manual wiring is required during the assembly process, thereby improving the production efficiency of the energy storage system and reducing the production cost of the energy storage system.

[0046] In a specific implementation, the first electrical connector 310 includes a mounting portion 311, and the mounting portion 311 is fixedly connected to the mounting plate 120. In this way, the first electrical connector 310 can be connected to the mounting plate 120 through the mounting portion 311, so that the first electrical connector 310 is pre-installed on the cabinet 100, so that the electrical connection assembly 300 and the cabinet 100 are assembled as one.

[0047] In a possible implementation, the energy storage system of the present application also includes a first threaded connector and a second threaded connector, the mounting portion 311 has a first connecting hole, the mounting plate 120 has a second connecting hole, and the first threaded connector passes through the first connecting hole and the second connecting hole in sequence to be threadedly connected to the second threaded connector.

[0048] Among them, the first threaded connector can be provided with an external thread, and the second threaded connector can be provided with a matching internal thread, so that after the first threaded connector passes through the first connecting hole and the second connecting hole in sequence, the head of the first threaded connector stops at the side of the mounting portion 311 away from the mounting plate 120, and the end of the first threaded connector away from its head is threadedly connected to the second threaded connector, thereby making the second threaded connector stop at the side of the mounting plate 120 away from the mounting portion 311, so that the first electrical connector 310 can be reliably pre-installed to the mounting plate 120.

[0049] For example, the first threaded connection member may be a bolt, and the second threaded connection member may be a nut.

[0050] Reference Figure 3 As shown, in some embodiments, the first electrical connector 310 further includes an electrical connector portion 312, and the electrical connector portion 312 is connected to the mounting portion 311. The electrical connector portion 312 includes a first connection end and a second connection end connected to each other, the first connection end is located on a side of the mounting plate 120 facing away from the opening, and the second connection end is located on a side of the mounting plate 120 facing the opening, the first connection end is connected to the second electrical connector 320, and the second connection end is connected to the third electrical connector 210.

[0051] It should be understood that the mounting portion 311 is a mechanical connection portion for fixing the first electrical connector 310 to the mounting plate 120, and the electrical connector 312 is a portion for electrically connecting the second electrical connector 320 and the third electrical connector 210. Therefore, the electrical connector 312 may include a first connection end and a second connection end, and the first connection end is located on the side of the mounting plate 120 facing away from the opening, so that after the first electrical connector 310 is pre-installed on the mounting plate 120 through the mounting portion 311, the first electrical connector 310 can be pre-installed together with the second electrical connector 320 through the first connection end, and the second connection end is located on the side of the mounting plate 120 facing the opening. When the battery box 200 is loaded into the receiving layer, the third electrical connector 210 can be connected to the second connection end, so that the battery boxes 200 of different receiving layers are connected in series.

[0052] In a possible implementation, the first connection end is fixedly connected to the second electrical connection member 320 , and the second connection end is detachably connected to the third electrical connection member 210 .

[0053] In this way, the first electrical connector 310 can be reliably preassembled with the second electrical connector 320 , and the first electrical connector 310 can be connected to or disconnected from the third electrical connector 210 as needed.

[0054] In some embodiments, the energy storage system of the present application may further include a third threaded connector and a fourth threaded connector, the first connection end has a third connection hole, the second electrical connector 320 has a fourth connection hole, and the third threaded connector passes through the third connection hole and the fourth connection hole in sequence to be threadedly connected to the fourth threaded connector.

[0055] In this way, after the third threaded connector passes through the third connecting hole and the fourth connecting hole in sequence, the head of the third threaded connector stops at the side of the first connecting end away from the second electrical connector 320, the third threaded connector can be provided with an external thread, and the fourth threaded connector can be provided with a matching internal thread, and the end of the third threaded connector away from its head can be threadedly connected to the fourth threaded connector, so that the fourth threaded connector stops at the side of the second electrical connector 320 away from the first connecting end, so that the second electrical connector 320 can be fixed to the first electrical connector 310, so that the second electrical connector 320 can be reliably pre-installed to the cabinet 100.

[0056] Exemplarily, the third threaded connection member may be a bolt, and the fourth threaded connection member may be a nut.

[0057] Reference Figure 4 As shown, in a possible implementation, the battery box 200 also includes a box body 220, the third electrical connector 210 includes an insulating shell 211 and an electrical plug-in portion 212, the insulating shell 211 is connected to the box body 220, the electrical plug-in portion 212 is arranged in the insulating shell 211, and the second connection end is plugged into the electrical plug-in portion 212.

[0058] In this way, the insulating shell 211 can be used to insulate and protect the electrical plug-in portion 212, and the third electrical connector 210 can be plugged into the second connection end through the electrical plug-in portion 212 to achieve a detachable connection between the third electrical connector 210 and the first electrical connector 310, so as to facilitate the installation of the battery box 200 to the cabinet 100 or the removal of the battery box 200 from the cabinet 100 as needed.

[0059] In a possible implementation, the mounting portion 311 is made of insulating material. It is understandable that the mounting portion 311 is a mechanical connection portion for fixing the first electrical connector 310 to the mounting plate 120, and the electrical connection portion 312 is a portion for electrically connecting the second electrical connector 320 and the third electrical connector 210. In order to improve the structural strength of the cabinet 100, the support frame 110 can be made of a metal material, which is conductive, and the mounting portion 311 and the mounting plate 120 can be made of an insulating material to avoid establishing an electrical connection between the electrical connection portion 312 and the support frame 110, which may cause a short circuit in the energy storage cabinet 10, thereby improving the safety performance of the energy storage cabinet 10.

[0060] Reference Figure 1 and Figure 2 As shown, in a possible implementation, the number of energy storage cabinets 10 is one, and the second electrical connector 320 includes a first copper bar 321 and a second copper bar 322, the first copper bar 321 connects two adjacent battery boxes 200, and the second copper bar 322 connects the first battery box 200 and the last battery box 200 of the multiple battery boxes 200.

[0061] That is to say, multiple battery boxes 200 can be arranged in sequence in a vertical manner. When there is only one energy storage cabinet 10 in the energy storage system, the middle battery boxes 200 can be connected by the first copper bus 321, so that the middle battery boxes 200 are connected in series in sequence along the vertical direction. The battery box 200 located at the top and the battery box 200 located at the bottom can be connected by the second copper bus 322. In this way, multiple battery boxes 200 in the entire energy storage cabinet 10 can be connected in series in sequence.

[0062] Reference Figure 5 As shown, in a possible implementation, the number of energy storage cabinets 10 is at least two, and the second electrical connector 320 includes a third copper bar 323 and a fourth copper bar 324, the third copper bar 323 connects two adjacent battery boxes 200 of the same energy storage cabinet 10, and the fourth copper bar 324 connects the battery boxes 200 of two adjacent energy storage cabinets 10.

[0063] That is to say, when there are two or more energy storage cabinets 10 in the energy storage system, in a single energy storage cabinet 10, multiple battery boxes 200 can be arranged in sequence in a vertical manner, and the middle battery boxes 200 can be connected through the third copper busbar 323, so that the middle battery boxes 200 are connected in series in sequence along the vertical direction. In two adjacent energy storage cabinets 10, the top battery box 200 of one energy storage cabinet 10 and the top battery box 200 of the other energy storage cabinet 10 can be connected through the fourth copper busbar 324, and the bottom battery box 200 of one energy storage cabinet 10 and the bottom battery box 200 of the other energy storage cabinet 10 can be connected through the fourth copper busbar 324. In this way, not only can the multiple battery boxes 200 in a single energy storage cabinet 10 be connected in series in sequence, but also multiple energy storage cabinets 10 can be connected in series.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An energy storage system, characterized in that: An energy storage cabinet is provided, wherein the energy storage cabinet comprises a cabinet body, a battery box and an electrical connection assembly, wherein the cabinet body comprises a supporting frame and a mounting plate connected to each other, wherein the supporting frame comprises a containing layer, wherein at least two containing layers are arranged in sequence along a vertical direction, and a side of the containing layer comprises an opening for the battery box to enter the containing layer; The electrical connection assembly includes a first electrical connection member and a second electrical connection member, the battery box includes a third electrical connection member, the mounting plate is arranged on a side of the containing layer away from the opening, the first electrical connection member is connected to the mounting plate, the first electrical connection members corresponding to different containing layers are connected to each other through the second electrical connection member, and the second electrical connection member is connected to the third electrical connection member through the first electrical connection member.

2. The energy storage system according to claim 1, characterized in that: The first electrical connector includes a mounting portion, and the mounting portion is fixedly connected to the mounting plate.

3. The energy storage system according to claim 2, characterized in that: It also includes a first threaded connector and a second threaded connector. The mounting portion has a first connecting hole, the mounting plate has a second connecting hole, and the first threaded connector passes through the first connecting hole and the second connecting hole in sequence to be threadedly connected with the second threaded connector.

4. The energy storage system according to claim 2 or 3, characterized in that: The first electrical connector further includes an electrical connection portion, the electrical connection portion being connected to the mounting portion; The electrical connection portion includes a first connection end and a second connection end connected to each other, the first connection end is located on a side of the mounting plate away from the opening, the second connection end is located on a side of the mounting plate facing the opening, the first connection end is connected to the second electrical connector, and the second connection end is connected to the third electrical connector.

5. The energy storage system according to claim 4, characterized in that: The first connection end is fixedly connected to the second electrical connection member, and the second connection end is detachably connected to the third electrical connection member.

6. The energy storage system according to claim 5, characterized in that: It also includes a third threaded connector and a fourth threaded connector, the first connection end has a third connection hole, the second electrical connector has a fourth connection hole, and the third threaded connector passes through the third connection hole and the fourth connection hole in sequence to be threadedly connected with the fourth threaded connector.

7. The energy storage system according to claim 5, characterized in that: The battery box also includes a box body, and the third electrical connector includes an insulating shell and an electrical plug-in portion, the insulating shell is connected to the box body, the electrical plug-in portion is arranged in the insulating shell, and the second connection end is plugged into the electrical plug-in portion.

8. The energy storage system according to claim 2 or 3, characterized in that: The installation part is made of insulating material.

9. The energy storage system according to any one of claims 1 to 3, characterized in that: The number of the energy storage cabinet is one, and the second electrical connector includes a first copper bar and a second copper bar, the first copper bar connects two adjacent battery boxes, and the second copper bar connects the first battery box and the last battery box of the plurality of battery boxes.

10. The energy storage system according to any one of claims 1 to 3, characterized in that: The number of the energy storage cabinets is at least two, and the second electrical connector includes a third copper bar and a fourth copper bar, the third copper bar connects two adjacent battery boxes of the same energy storage cabinet, and the fourth copper bar connects the battery boxes of two adjacent energy storage cabinets.

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