Energy storage cabinet, energy storage device, energy storage system and charging grid

Abstract

The utility model relates to an energy storage cabinet, an energy storage device, an energy storage system and a charging grid. The energy storage cabinet comprises a cabinet body and a plurality of support sets, the support sets are arranged on the inner wall of the cabinet body at intervals in the first direction, each support set comprises at least one support, and the supports can be unfolded relative to the inner wall of the cabinet body to form supporting positions for supporting the battery device. And each bracket can be folded relative to the inner wall of the cabinet body to form an avoiding position for the battery device to move. A plurality of bracket groups are arranged in a cabinet body along a first direction to support a plurality of battery devices arranged along the first direction. The brackets of the bracket group are arranged to be foldable, so that an avoiding space can be provided for the movement of the battery device in the cabinet body. In the assembling process, the battery device can be vertically placed on the support set, the battery device does not need to be pushed into the cabinet body, and the problem that the battery device is impacted in the battery device pushing process is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage, in particular to an energy storage cabinet, an energy storage device, an energy storage system and a charging grid. BACKGROUND

[0002] The energy storage device comprises an energy storage cabinet and a battery device, and the energy storage cabinet is generally provided with multiple layers of battery devices. The inner wall of the cabinet body of the traditional energy storage cabinet is designed with guide rail grooves, and the battery device is designed with guide rails. When the battery device is installed into the cabinet body, the battery device is lifted to the guide rail groove at the designated layer by a forklift, the guide rails on the battery device are aligned with the guide rail grooves, the battery device is pushed, and the battery device is moved to the installation point along the guide rail groove. However, during the pushing process of the battery device, the problem of over-pushing often occurs, which causes the battery device to collide with the inner surface of the cabinet body and damage the battery device. CONTENT OF THE UTILITY MODEL

[0003] In view of the above problems, the present application provides an energy storage cabinet, an energy storage device, an energy storage system and a charging grid. The energy storage cabinet is directly placed on the support from top to bottom by arranging foldable supports in the energy storage cabinet, and the battery device does not need to be pushed along the support, thereby solving the problem of collision of the battery device during the pushing process of the battery device.

[0004] In a first aspect, the present application provides an energy storage cabinet, which comprises:

[0005] a cabinet body; and

[0006] a plurality of support groups, which are arranged on the inner wall of the cabinet body in a first direction and comprise at least one support, each support can be unfolded relative to the inner wall of the cabinet body to form a support position for supporting the battery device, and each support can also be folded relative to the inner wall of the cabinet body to form an avoiding position for the movement of the battery device.

[0007] The plurality of support groups arranged in the first direction are used to support the plurality of battery devices arranged in the first direction. The supports of the support groups are foldable to provide an avoiding space for the movement of the battery device in the cabinet body. When assembling the battery device, the support corresponding to the battery device of a certain layer to be assembled is unfolded to the support position, the support above the corresponding support is folded to the avoiding position, the battery device to be assembled is moved above the corresponding support through the support folded to the avoiding position, and then vertically falls onto the corresponding support. In this way, the assembly of the battery devices of each layer is sequentially performed from bottom to top. During the assembly process, the battery device does not need to be pushed into the cabinet body, thereby solving the problem of collision of the battery device during the pushing process of the battery device.

[0008] In some embodiments, each support group comprises two supports arranged on the inner walls of opposite sides of the cabinet body along a second direction, the two supports being capable of being unfolded towards each other to form a support position and being capable of being folded away from each other to form an avoiding position; wherein the second direction intersects the first direction.

[0009] By arranging one support on the left inner wall and one support on the right inner wall of the cabinet body, the two supports are respectively supported on the left side and the right side of the battery device to provide stable support for the battery device. Moreover, the supports on the inner walls of opposite sides can be folded to provide a larger avoiding space for the movement of the battery device, thereby facilitating the installation of the battery device.

[0010] In some embodiments, each support group comprises at least two supports arranged on the same inner wall of the cabinet body along a third direction, all the supports being capable of being unfolded together to form a support position and being capable of being folded together to form an avoiding position, wherein the third direction intersects the first direction.

[0011] By providing support to one side of the battery device through the at least two supports, the installation of the battery device is ensured to be firm.

[0012] In some embodiments, the support comprises:

[0013] A folding piece rotatably connected to the inner wall of the cabinet body for supporting the battery device; the folding piece being capable of being rotated to the avoiding position close to the inner wall or being rotated to the support position inside the cabinet body;

[0014] A positioning piece for positioning the folding piece, the positioning piece being capable of positioning the folding piece in the support position and / or the avoiding position.

[0015] By arranging the support to comprise the folding piece and the positioning piece, the folding piece is arranged to provide support to the battery device, and the folding piece is rotated relative to the inner wall to adjust the folding piece between the avoiding position and the support position. The positioning piece is arranged to position the folding piece in the support position and / or the avoiding position to prevent the folding piece from moving randomly and affecting the support effect or affecting the avoiding of the battery device.

[0016] In some embodiments, the inner wall of the cabinet body is provided with a recess, and the folding piece is rotatably arranged in the recess and located in the recess when the folding piece is rotated to the avoiding position.

[0017] In this way, a larger avoiding space is provided for the battery device, and a smaller gap is maintained between the battery device and the inner wall, which is beneficial to improve the space utilization rate in the energy storage cabinet.

[0018] In some embodiments, the support further comprises:

[0019] A connecting piece arranged on the inner wall, and the folding piece is rotatably connected to the connecting piece.

[0020] Thus, the folding piece is connected to the connecting piece, and the connecting piece plays a reinforcing role to ensure the structural strength of the inner wall of the cabinet body.

[0021] In some embodiments, the positioning member comprises:

[0022] The connecting rod is rotatably connected to one of the folding piece and the connecting piece at one end, and the other end of the connecting rod is slidably arranged in the sliding groove.

[0023] When the folding piece needs to be unfolded, the folding piece is directly rotated, and the end of the connecting rod will slide in the sliding groove, and when the end of the connecting rod slides to the end of the sliding groove, the folding piece is just rotated to the supporting position. Reverse rotation of the folding piece, the end of the connecting rod will slide reversely in the sliding groove. Thus, the unfolding and folding operations of the folding piece are more convenient.

[0024] In some embodiments, the positioning member further comprises:

[0025] The positioning pin is movably arranged on the groove wall of the sliding groove, and when the folding piece is rotated to the avoiding position, the positioning pin is inserted into the sliding groove to block the continuous sliding of the connecting rod in the sliding groove.

[0026] The folding piece can be fixed at the avoiding position by the positioning pin to prevent the folding piece from rotating to the supporting position under the action of gravity and interfering with the moving battery device.

[0027] In some embodiments, the positioning member is configured as a stop block, which is arranged on the side of the folding piece away from the corresponding battery device, and the stop block is clamped between the inner wall of the cabinet body and the folding piece to limit the continuous rotation of the folding piece from the supporting position. Thus, the folding piece is positioned at the supporting position by the stop block to prevent it from rotating randomly, and the battery device is provided with more stable support.

[0028] In some embodiments, the connecting piece is arranged in the first direction, the positioning member is arranged on the side wall adjacent to the bottom end of the connecting piece and the inner wall, the connecting shaft is arranged on the side wall of the connecting piece facing the positioning member, the folding piece is detachably connected to the connecting shaft, and the two adjacent side surfaces of the folding piece can be supported on the positioning member.

[0029] Thus, the relative position between the folding piece and the positioning member can be adjusted by detaching the folding piece from the connecting shaft, adjusting the relative position, and then mounting the folding piece on the connecting shaft to adjust the position between the supporting position and the folding position of the folding piece.

[0030] In some embodiments, the connecting piece and the positioning member are arranged in an integrated structure, which is convenient to process and structurally firm

[0031] In a second aspect, the application provides an energy storage device, which comprises a battery device and an energy storage cabinet provided by any of the above embodiments, and the battery device is arranged in the cabinet body.

[0032] In a third aspect, the present application provides an energy storage system, comprising a power conversion device and the energy storage device provided in the above embodiments, wherein the power conversion device is used to connect between the power generation device and the energy storage device.

[0033] In a fourth aspect, the present application provides a charging grid, comprising a charging pile and the energy storage device provided in the above embodiments, wherein the charging pile is electrically connected with the energy storage device, and the energy storage device is used to provide electric energy for the charging pile.

[0034] The above description is only a summary of the technical solutions of the present application. In order to enable one of ordinary skill in the art to better understand the technical means of the present application and implement it according to the content of the description, and in order to enable the above and other purposes, characteristics and advantages of the present application to be more apparent and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0035] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments, and are not meant to limit the present application. Moreover, the same reference numerals in all the drawings represent the same or similar elements. In the drawings:

[0036] Figure 1 Structure schematic diagram of the energy storage device provided in Embodiment One of the present application;

[0037] Figure 2 Structure schematic diagram of the bracket provided in Embodiment One of the present application;

[0038] Figure 3 Structure schematic diagram of the bracket provided in Embodiment One of the present application in a supporting state;

[0039] Figure 4 Structure schematic diagram of the bracket provided in Embodiment Two of the present application in a folded state;

[0040] Figure 5 Structure schematic diagram of the bracket provided in Embodiment Three of the present application in a supporting state;

[0041] Figure 6 Structure schematic diagram of the bracket provided in Embodiment Three of the present application in a folded state.

[0042] Reference numerals in the specific embodiments are as follows:

[0043] 1, cabinet body; 11, inner wall; 111, groove;

[0044] 2, battery device;

[0045] 3, support; 31, folding piece; 32, connecting piece; 321, sliding groove; 322, connecting shaft; 331, connecting rod; 3311, sliding shaft; 332, positioning pin; 333, stop block. DETAILED DESCRIPTION

[0046] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0048] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly and specifically limited.

[0049] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily mutually exclusive or alternative to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0050] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents a "or" relationship between the front and rear associated objects.

[0051] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0052] In the description of the embodiments of the present application, the orientations or positional relationships indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0053] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0054] With the aggravation of global energy shortage, pollution, uneven development of electric power and other problems, more new energy needs to be used efficiently, in order to better store electric power, to alleviate the contradiction of electricity use, energy storage devices emerge as the times require, and are widely used in power grid, large ships, photovoltaic industry, communication base station and other aspects, and play an important role in the promotion and application of clean energy. For example, energy storage devices are increasingly widely used in power grids, and energy storage devices play a role in peak clipping in power grids.

[0055] The energy storage device generally comprises an energy storage cabinet and a battery device arranged in the energy storage cabinet, and a plurality of layers of battery devices are generally arranged in the energy storage cabinet. The plurality of layers of carriers arranged in the energy storage cabinet provide stable support for the battery devices, ensure that the positions of the battery devices inside the energy storage cabinet are fixed, so as to reduce the risk of shaking and displacement during transportation, and provide protection for the normal and stable use of the energy storage cabinet.

[0056] The inventors of the present application have noticed that in order to improve the energy density of the energy storage device, a small gap is generally reserved between the plurality of layers of battery devices, and the carrier blocks the upward and downward movement of the battery device. Therefore, when the battery device is installed into the energy storage cabinet, the battery device is generally horizontally pushed into the energy storage cabinet by arranging guide rails and guide grooves on the carrier and the battery device respectively. During the pushing process, the problem of over-pushing may occur, causing the battery device to collide with the inner surface of the cabinet body and damage the battery device.

[0057] Based on this, the inventors of the present application design a storage cabinet, a plurality of support groups are arranged on the inner wall of the cabinet body, and each support group supports one battery device. Each support group includes at least one support, each support can be unfolded relative to the inner wall of the cabinet body to form a support position for supporting the battery device, and each support can also be folded relative to the inner wall of the cabinet body to form an avoidance position for moving the battery device. When assembling the battery device, the support corresponding to the battery device to be assembled is unfolded to the support position, the support on the upper side of the corresponding support is folded to the avoidance position, the battery device to be assembled is moved to the upper side of the corresponding support through the support folded to the avoidance position, and then vertically falls onto the corresponding support. In this way, the assembly of each layer of battery devices is carried out from bottom to top layer by layer. In the assembly process, the battery device does not need to be pushed into the cabinet, and the problem of impact on the battery device during pushing the battery device is solved.

[0058] The embodiment of the present application provides a kind of energy storage device, including one or more battery clusters (Battery Cluster) to improve the voltage and capacity of energy storage device. Battery cluster can include multiple battery devices, multiple battery devices are connected in series by busbar component to improve the voltage of energy storage device. When the energy storage device includes multiple battery clusters, multiple battery clusters are connected in parallel to improve the capacity of energy storage device. Energy storage device can be used in energy storage power station, wind power system, solar power system, mobile power system or temporary power supply system etc. Energy storage device can store electrical energy as needed and output electrical energy at appropriate time. For example, energy storage device can store electrical energy when electricity consumption is low, and provide electrical energy for related user or electrical equipment during electricity consumption peak. The energy storage system provided by the embodiment of the present application can be any power system that needs to use energy storage device.

[0059] In some embodiments, the energy storage device can include a cabinet body and one or more battery clusters, and the battery clusters are contained in the cabinet body.

[0060] In some embodiments, the energy storage device can include a thermal management module, a master control module, a general control module, a power distribution module, and a fire-fighting module, etc.

[0061] As an example, the thermal management module can include a liquid cooling unit, which provides cooling liquid for adjusting the temperature of battery monomer to each battery device through pipeline.

[0062] As an example, the master control module can serve as a battery management unit of the battery cluster, for monitoring and managing the battery cluster. The master control module can monitor the current, voltage, power or temperature information of the battery cluster. For example, the charging and discharging current and voltage of the battery cluster can be controlled. The master control module includes a slave battery management unit (SBMU), a fusion switch and other modules.

[0063] As an example, the master control module can be used as a battery management unit of the energy storage device to monitor and manage the energy storage device. The master control module can monitor information such as current, voltage, power, state of charge, or temperature of the energy storage device. For example, the charging and discharging current and voltage of the energy storage device can be controlled. As an example, the master control module includes an insulation monitoring module IMM, a master battery management unit MBMU, an Ethernet ETH, and an optical fiber conversion module.

[0064] As an example, the fire-fighting system includes a control panel, a detector, an alarm device, etc., for detecting, alarming, or extinguishing the energy storage system.

[0065] As an example, the power distribution device can be used to distribute power to the energy storage device power module.

[0066] In some embodiments, the energy storage system can include one or more energy storage devices and a power conversion system (PCS) connected between the power generation device and the energy storage device. The power generation device is used to generate electric energy, and the electric energy generated by the power generation device can be stored in the energy storage device through the power conversion device, and the electric energy stored in the energy storage device can be released to the power generation device through the power conversion device. As an example, the power generation device can be a power grid, a solar panel, a water power generation device, a fire power generation device, a wind power generation device, etc. The specific type of power generation device is not limited in the present application.

[0067] The embodiment of the present application provides a charging network, including a charging pile and an energy storage device, the charging pile is electrically connected with the energy storage device, and the energy storage device is used to provide electric energy for the charging pile. The charging pile and the battery device in the energy storage device are electrically connected through a cable, and the battery device can provide the electric energy stored in itself to the charging pile. The charging pile has one or more connectors, which are used to connect with an electric equipment (such as a vehicle), so that the electric equipment can be charged.

[0068] The energy storage device can be located inside the charging pile (for example, a charging and storage integrated machine) or outside the charging pile.

[0069] The energy storage cabinet, the energy storage device, the energy storage system and the charging grid provided by the embodiment of the present application are described below with reference to the accompanying drawings.

[0070] Embodiment one:

[0071] Please refer to Figure 1 , Figure 1A structural schematic diagram of an energy storage device provided by Embodiment One of the present application.

[0072] The energy storage cabinet provided by Embodiment One of the present application comprises a cabinet body 1 and a plurality of support groups. The plurality of support groups are arranged on the inner wall 11 of the cabinet body 1 along a first direction. Each support group comprises at least one support 3. Each support 3 can be unfolded relative to the inner wall of the cabinet body 1 to form a support position for supporting a battery device 2. Each support 3 can also be folded relative to the inner wall of the cabinet body 1 to form an avoiding position for the movement of the battery device 2. The first direction refers to the up-down direction shown in Figure 1

[0073] The plurality of battery devices 2 arranged along the first direction are supported by the plurality of support groups arranged in the cabinet body 1 along the first direction. The supports 3 of the support groups are arranged to be foldable, so as to provide an avoiding space for the movement of the battery devices 2 in the cabinet body 1. When assembling the battery devices 2, the supports 3 corresponding to the battery devices 2 of a certain layer to be assembled are unfolded to the support positions, the supports 3 above the corresponding supports 3 are folded to the avoiding positions, the battery devices 2 to be assembled are moved above the corresponding supports 3 through the supports 3 folded to the avoiding positions, and then vertically fall onto the corresponding supports 3. In this way, the assembly of the battery devices 2 of each layer is sequentially performed from bottom to top. In the assembly process, the battery devices 2 do not need to be pushed into the cabinet body 1, so the problem of impact on the battery devices 2 caused by pushing the battery devices 2 is solved.

[0074] Specifically, the front side of the cabinet body 1 is provided with an opening, and the battery devices 2 are moved in and out of the cabinet body 1 through the opening in the front side. Generally, a cabinet door (not shown in the figure) is arranged at the opening, so as to close the opening by means of the cabinet door.

[0075] Optionally, two separate accommodating spaces are arranged in the cabinet body 1, and a plurality of layers of battery devices 2 are arranged in each of the two accommodating spaces. The arrangement and fixing modes of the battery devices 2 in the two accommodating spaces are similar. Here, the supports 3 are described by taking the left accommodating space as an example, and the supports 3 and the battery devices 2 in the right accommodating space are omitted.

[0076] It should be noted that the energy storage cabinet is not limited to two accommodating spaces. According to the energy storage requirement, only one accommodating space or more than two accommodating spaces can be arranged. The number of the accommodating spaces in the cabinet body 1 is not limited.

[0077] In addition, Figure 1 It can be understood that the number of the battery devices 2 is not limited to two layers. More layers of battery devices 2 can be arranged, the height of the cabinet body 1 can be adaptively increased according to the requirement, and the number of the layers of the support groups can be increased to support more layers of battery devices 2.

[0078] ​In some embodiments, each bracket group comprises two brackets 3 arranged on the inner walls 11 on opposite sides of the cabinet 1 along a second direction, the two brackets 3 can be unfolded to form a support position and can be folded to form an avoiding position; wherein the second direction intersects the first direction. The second direction specifically refers to the left-right direction shown in Figure 1 FIG. 1.

[0079] By arranging one bracket 3 on the left inner wall 11 and the right inner wall 11 of the cabinet 1 respectively, the two brackets 3 support the battery device 2 on the left side and the right side respectively, so as to provide stable support for the battery device 2. Moreover, the brackets 3 on the inner walls 11 on opposite sides can be folded, so as to provide a larger avoiding space for the movement of the battery device 2, thereby facilitating the installation of the battery device 2.

[0080] It can be understood that the bracket 3 can be arranged only on one inner wall 11 on one side of the cabinet 1 along the second direction, and a fixed support table can be arranged on the other inner wall 11, and the battery device 2 is supported by the support table and the bracket 3. When the battery device 2 needs to move through a bracket 3 on a certain layer, the corresponding bracket 3 is folded to the avoiding position, and the battery device 2 passes through between the bracket 3 and the fixed support table.

[0081] In some embodiments, each bracket group comprises at least two brackets 3 arranged on the same inner wall 11 of the cabinet 1 along a third direction, and all the brackets 3 can be unfolded to form a support position and can be folded to form an avoiding position, wherein the third direction intersects the first direction. Specifically, the third direction refers to the front-back direction shown in Figure 1 FIG. 1. By supporting one side of the battery device 2 by the at least two brackets 3, the installation of the battery device 2 is ensured to be firm.

[0082] In the embodiments of the present application, each bracket group comprises four brackets 3, two brackets 3 are arranged on the left inner wall 11 and the right inner wall 11 of the same accommodating space respectively, and the four brackets 3 support the four corners of the battery device 2, so as to provide stable support for the battery device 2. At the same time, the number of brackets 3 is relatively small, and the unfolding and folding operations are time-saving and labor-saving. Moreover, when the brackets 3 are folded to the avoiding position, a larger avoiding space is formed, which is beneficial to the smooth passing of the battery device 2.

[0083] Figure 2 FIG. 3 is a structural schematic view of the bracket 3 provided in the first embodiment of the present application.

[0084] Referring to Figure 2 , the bracket 3 comprises a folding piece 31 and a positioning piece. The folding piece 31 is rotationally connected to the inner wall 11 of the cabinet 1 and is used for supporting the battery device 2. The folding piece 31 can be rotated to the avoiding position close to the inner wall 11 or be rotated to the support position inside the cabinet 1. The positioning piece is used for positioning the folding piece 31, and the positioning piece can position the folding piece 31 in the support position and / or the avoiding position.

[0085] By setting the bracket 3 to include the folding piece 31 and the positioning piece, the folding piece 31 provides support to the battery device 2, and the folding piece 31 is adjusted between the avoiding position and the supporting position by rotating the folding piece 31 relative to the inner wall 11. The folding piece 31 is positioned in the supporting position and / or the avoiding position by the positioning piece, so as to prevent the folding piece 31 from moving at will and affecting the supporting effect or affecting the avoidance of the battery device 2.

[0086] When in the supporting position, the folding pieces 31 of the plurality of brackets 3 of the same bracket group form a flat supporting surface, so as to provide more stable support to the battery device 2.

[0087] In order to facilitate the installation of the folding piece 31, the bracket 3 further includes a connecting piece 32, which is arranged on the inner wall 11, and the folding piece 31 is rotationally connected to the connecting piece 32. In this way, the folding piece 31 is connected to the connecting piece 32, and the connecting piece 32 plays a reinforcing role to ensure the structural strength of the inner wall 11 of the cabinet body 1.

[0088] Optionally, the connecting piece 32 is arranged as a connecting plate extending in the up-down direction, which can be fixed to the inner wall 11 by welding or bolt connection.

[0089] The folding piece 31 is rotationally connected to the lower end of the connecting piece 32, and is attached to the front side or the rear side of the connecting piece 32 when the folding piece 31 is folded. The distance between the two opposite connecting pieces 32 on the left inner wall 11 and the right inner wall 11 is greater than the width of the battery device 2, so as to ensure that the battery device 2 can smoothly pass between the two brackets 3.

[0090] Specifically, the positioning piece includes a connecting rod 331, one end of the connecting rod 331 is rotationally connected to one of the folding piece 31 and the connecting piece 32, the other of the folding piece 31 and the connecting piece 32 is provided with a sliding groove 321 extending from one end to the other end of the folding piece 31 and the connecting piece 32 rotationally connected, and the other end of the connecting rod 331 is slidingly arranged in the sliding groove 321.

[0091] When it is needed to unfold the folding piece 31, the folding piece 31 is directly rotated, and the end of the connecting rod 331 will slide in the sliding groove 321, and when sliding to the end of the sliding groove 321, the folding piece 31 is just rotated to the supporting position. The folding piece 31 is reversely rotated, and the end of the connecting rod 331 will reversely slide in the sliding groove 321. In this way, the unfolding and folding operations of the folding piece 31 can be ensured to be more convenient.

[0092] Optionally, the end of the connecting rod 331 connected to the sliding groove 321 is rotationally provided with a sliding shaft 3311, and the sliding shaft 3311 is slidingly arranged in the sliding groove 321, so as to realize the movable connection between the connecting rod 331 and the connecting piece 32.

[0093] In some embodiments, the positioning member further comprises a positioning pin 332 movably arranged on the groove wall of the sliding groove 321. When the folding member 31 is rotated to the avoiding position, the positioning pin 332 is inserted into the sliding groove 321 to block the continuous sliding of the connecting rod 331 in the sliding groove 321. In this way, the folding member 31 can be fixed in the avoiding position by the positioning pin 332 to prevent the folding member 31 from rotating to the supporting position under the action of gravity and interfering with the moving battery device 2.

[0094] Specifically, the sliding groove 321 is arranged on the side of the connecting member 32 facing the folding member 31 and extends upward and downward. The positioning pin 332 is arranged at the upper end of the sliding groove 321. When the sliding shaft 3311 slides in the sliding groove 321, the positioning pin 332 is pulled outward to avoid the sliding groove 321. When the folding member 31 is rotated to the folding position, the sliding shaft 3311 slides to the upper side of the positioning pin 332. At this time, the positioning pin 332 is inserted into the sliding groove 321 to block the sliding shaft 3311 and limit the downward sliding of the sliding shaft 3311, thereby preventing the folding member 31 from rotating to the supporting position.

[0095] In some embodiments, a groove (not shown in the figure) is arranged on the inner wall 11 of the cabinet 1. The connecting member 32 is arranged in the groove and located in the groove 111 when the folding member 31 is rotated to the avoiding position. In this way, a larger avoiding space is provided for the battery device 2, and a smaller gap can be maintained between the battery device 2 and the inner wall 11, which is beneficial to improve the space utilization rate in the energy storage cabinet.

[0096] The embodiments of the present application also provide an energy storage device, which comprises the battery device 2 and the energy storage cabinet according to any of the above embodiments.

[0097] The embodiments of the present application also provide an energy storage system, which comprises the power conversion device and the energy storage device according to the above embodiments. The power conversion device is used to be connected between the power generation device and the energy storage device.

[0098] The embodiments of the present application also provide a charging grid, which comprises the charging pile and the energy storage device according to the above embodiments. The charging pile is electrically connected with the energy storage device, and the energy storage device is used to provide electric energy for the charging pile.

[0099] Embodiment two:

[0100] The second embodiment of the present application provides an energy storage cabinet, an energy storage device, an energy storage system and a charging grid, which are basically the same as the first embodiment, and the difference lies in the specific structure of the support 3.

[0101] Figure 3 The structural schematic diagram of the support 3 in the supporting state according to the second embodiment of the present application is shown in FIG. 6; Figure 4 The structural schematic diagram of the support 3 in the folding state according to the second embodiment of the present application is shown in FIG. 7. The structural schematic diagram of the support 3 in the supporting state according to the second embodiment of the present application is shown in FIG. 6;

[0102] Please refer to Figure 3 and Figure 4 The support 3 comprises a folding piece 31 and a positioning piece. The folding piece 31 is rotationally connected to the inner wall 11 of the cabinet body 1 and is used to support the battery device 2. The folding piece 31 can rotate to an avoiding position close to the inner wall 11 or rotate to a supporting position inside the cabinet body 1. The positioning piece is used to position the folding piece 31 and can position the folding piece 31 at the supporting position and / or the avoiding position.

[0103] Optionally, the inner wall 11 of the cabinet body 1 is provided with a groove 111, and the folding piece 31 is rotationally arranged in the groove 111 and located in the groove 111 when rotating to the avoiding position. The groove 111 provides space for the folding piece 31 in the avoiding position, so that the folding piece 31 can provide more avoiding space for the battery device 2, and the battery device 2 can maintain a small gap with the inner wall 11, which is beneficial to improve the space utilization rate in the energy storage cabinet.

[0104] Specifically, the groove 111 is arranged on the inner wall 11 in the up-down direction, and the folding piece 31 is rotationally connected to the lower end of the groove 111 through a rotating shaft. The folding piece 31 is rotated upward to be clamped into the groove 111 to reach the avoiding position.

[0105] When the folding piece 31 rotates, a larger resistance can be provided, so that the folding piece 31 can be positioned at the folding position when rotating to the groove 111 and will not naturally rotate to the supporting position, achieving the purpose of positioning the folding piece 31.

[0106] Optionally, the length of the groove 111 is greater than the length of the folding piece 31. When the folding piece 31 is clamped into the groove 111, a gap is maintained between the folding piece 31 and the upper groove wall of the groove 111, which facilitates the hand or tool to drive the folding piece 31 to rotate.

[0107] In the embodiment of the application, the positioning piece is configured as a stop block 333, which is arranged on the side of the folding piece 31 away from the corresponding battery device 2 and clamped between the inner wall 11 of the cabinet body 1 and the folding piece 31 to limit the folding piece 31 from continuously rotating from the supporting position.

[0108] For example, the stop block 333 protrudes from the folding piece 31 in the front-back direction to form a larger contact range with the inner wall 11, thereby providing a better blocking effect for the folding piece 31.

[0109] Embodiment three

[0110] Embodiment three of the application provides an energy storage cabinet, an energy storage device, an energy storage system and a charging grid, which are basically the same as embodiment one, except that the specific structure of the support 3 is different.

[0111] Figure 5Fig. 3 is a schematic view of the structure of the support 3 in the supporting state according to the third embodiment of the present application; Figure 6 Fig. 4 is a schematic view of the structure of the support 3 in the folding state according to the third embodiment of the present application.

[0112] Referring to Figure 5 and Figure 6 , the support 3 comprises a folding member 31 and a positioning member. The folding member 31 is rotationally connected to the inner wall 11 of the cabinet 1 and is used to support the battery device 2. The folding member 31 can be rotated to a avoiding position close to the inner wall 11 or a supporting position inside the cabinet 1. The positioning member is used to position the folding member 31 in the supporting position and / or the avoiding position.

[0113] By setting the support 3 to comprise the folding member 31 and the positioning member, the folding member 31 is used to support the battery device 2, and the folding member 31 is adjusted between the avoiding position and the supporting position by rotating the folding member 31 relative to the inner wall 11. The folding member 31 is positioned in the supporting position and / or the avoiding position by the positioning member, so as to prevent the folding member 31 from moving at will and affecting the supporting effect or affecting the avoiding of the battery device 2.

[0114] In order to facilitate the installation of the folding member 31, the support 3 further comprises a connecting member 32. The connecting member 32 is arranged on the inner wall 11, and the folding member 31 is rotationally connected to the connecting member 32. In this way, the folding member 31 is connected to the connecting member 32, and the connecting member 32 plays a reinforcing role to ensure the structural strength of the inner wall 11 of the cabinet 1.

[0115] In some embodiments, the connecting member 32 extends along a first direction, the positioning member is arranged on a side wall adjacent to the bottom end of the connecting member 32 and the inner wall 11, a connecting shaft 322 is arranged on the side wall of the connecting member 32 facing the positioning member, the folding member 31 is detachably connected to the connecting shaft 322, and two adjacent side surfaces of the folding member 31 can be supported on the positioning member. In this way, the folding member 31 can be detached from the connecting shaft 322, reinstalled on the connecting shaft 322 after the relative position between the folding member 31 and the positioning member is adjusted, so as to realize the position adjustment between the supporting position and the folding position of the folding member 31.

[0116] Alternatively, the positioning member is configured as a stop block 333 arranged on the side of the folding member 31 away from the corresponding battery device 2. The stop block 333 cooperates with the connecting shaft 322 to limit the folding member 31. When the folding member 31 is in the supporting position, the side surface away from the supporting surface of the folding member 31 is supported on the stop block 333, and the folding member 31 is limited to continue to rotate downward by the stop block 333. When the folding member 31 is in the folding position, the side surface of the folding member 31 adjacent to the supporting surface is supported on the stop block 333, so that the folding member 31 remains in the vertical state and is limited in the avoiding position.

[0117] Optionally, the connecting member 32 and the positioning member are arranged as an integrated structure, so as to facilitate processing and be firm in structure.

[0118] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application. Especially, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. An energy storage cabinet, characterized in that, The energy storage cabinet includes: Cabinet; and Multiple bracket groups are spaced apart on the inner wall of the cabinet along a first direction. Each bracket group includes at least one bracket. Each bracket can be unfolded relative to the inner wall of the cabinet to form a support position for supporting the battery device. Each bracket can also be folded relative to the inner wall of the cabinet to form a clearance position for the battery device to move.

2. The energy storage cabinet according to claim 1, characterized in that, Each bracket group includes two brackets disposed on the inner walls of opposite sides of the cabinet along a second direction. The two brackets can be unfolded towards each other to form the support position, and can also be folded away from each other to form the clearance position; wherein the second direction intersects with the first direction.

3. The energy storage cabinet according to claim 1, characterized in that, Each bracket group includes at least two brackets spaced apart along a third direction on the same inner wall of the cabinet. All the brackets can be unfolded together to form the support position and can also be folded together to form the clearance position, wherein the third direction intersects with the first direction.

4. The energy storage cabinet according to any one of claims 1-3, characterized in that, The support includes: A folding component is rotatably connected to the inner wall of the cabinet to support the battery device; the folding component can rotate towards the inner wall to a clearance position, or rotate into the cabinet to a support position. A positioning element is used to position the folding member, the positioning element being able to position the folding member at the support position and / or the clearance position.

5. The energy storage cabinet according to claim 4, characterized in that, The inner wall of the cabinet is provided with a groove, and the folding component is rotatably disposed in the groove, and when the folding component is rotated to the clearance position, it is located in the groove.

6. The energy storage cabinet according to claim 4, characterized in that, The support also includes: A connector is provided on the inner wall, and the folding member is rotatably connected to the connector.

7. The energy storage cabinet according to claim 6, characterized in that, The positioning element includes: A connecting rod, one end of which is rotatably connected to one of the folding member and the connecting member, and the other of the folding member and the connecting member is provided with a sliding groove, which extends from the rotatably connected end of the folding member and the connecting member to the other end, and the other end of the connecting rod is slidably disposed in the sliding groove.

8. The energy storage cabinet according to claim 7, characterized in that, The positioning element also includes: A positioning pin is movably mounted on the wall of the slide groove. When the folding member rotates to the clearance position, the positioning pin is inserted into the slide groove to prevent the connecting rod from continuing to slide within the slide groove.

9. The energy storage cabinet according to claim 4, characterized in that, The positioning element is constructed as a stop block, which is disposed on the side of the folding member opposite to the corresponding battery device. The stop block is sandwiched between the inner wall of the cabinet and the folding member to restrict the folding member from continuing to rotate from the support position.

10. The energy storage cabinet according to claim 6, characterized in that, The connector extends along the first direction, the positioning member is disposed on the side wall adjacent to the inner wall at the bottom end of the connector, a connecting shaft is disposed on the side wall of the connector facing the positioning member, the folding member is detachably connected to the connecting shaft, and the two adjacent sides of the folding member can be supported on the positioning member.

11. The energy storage cabinet according to claim 10, characterized in that, The connector and the positioning component are configured as an integral structure.

12. An energy storage device, characterized in that, It includes a battery device and an energy storage cabinet as described in any one of claims 1-11, wherein the battery device is disposed within the cabinet.

13. An energy storage system, characterized in that, It includes a power conversion device and an energy storage device as described in claim 12, wherein the power conversion device is used to connect between the power generation device and the energy storage device.

14. A charging grid, characterized in that, It includes a charging pile and an energy storage device as described in claim 12, wherein the charging pile is electrically connected to the energy storage device, and the energy storage device is used to provide electrical energy to the charging pile.

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