Mobile energy storage system and energy storage device thereof

Abstract

The utility model provides a kind of mobile energy storage system and its energy storage equipment.The energy storage equipment includes multiple battery packs, multiple high-pressure boxes, multiple frames and multiple compression parts.Each frame includes frame body and multiple support frames, and the bottom of each frame body forms a receiving cavity for receiving a high-pressure box. Multiple support frames are connected to the inside of the frame body vertically and are located above the receiving cavity, and each support frame is used to support a battery pack. Multiple support frames include multiple lower support frames and a top support frame. Each hole in each lower support frame is used for fastener threading with a hole in the battery pack to achieve the connection and fixation of the battery pack and the lower support frame. Each top support frame is vertically spaced with two compression parts, and the two compression parts are used to compress the edge of the battery pack on the top support frame. The above design facilitates the connection and fixation between the battery pack and the lower support frame or the top support frame in limited space, which is easy to operate.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, and in particular to a mobile energy storage system and its energy storage device. Background Technology

[0002] Currently, the market demand for energy storage products is increasing, among which containerized energy storage systems occupy a significant market share due to their high capacity, flexibility, and ease of transportation. As crucial components of containerized energy storage systems, the layout and installation of battery packs and high-voltage boxes within the limited space of the enclosure are of paramount importance to optimizing the performance and safety of the system. Utility Model Content

[0003] The purpose of this utility model is to provide a mobile energy storage system and its energy storage device. By optimizing the layout of the battery pack and high-voltage box, as well as optimizing the installation and fixing method of the battery pack, the performance and safety of the energy storage device can be optimized, and the space can be used rationally.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] According to one aspect of this application, an energy storage device is provided, comprising:

[0006] Multiple battery packs, each of which includes multiple battery bags;

[0007] Multiple high-voltage boxes, each of which is electrically connected to at least one of the battery packs;

[0008] Multiple frames are provided, each frame including a frame body and multiple support frames. The frame body has an opening on one side and a receiving cavity is formed at the bottom of each frame body. Each receiving cavity is used to receive a high-voltage box. Multiple support frames are vertically spaced inside the frame body and are located above the receiving cavities. Each support frame is used to support a battery pack. The multiple support frames include multiple lower support frames and a top support frame located above all the lower support frames. Each lower support frame has multiple through holes at its longitudinal ends spaced laterally. Each through hole is arranged corresponding to a through hole on the edge of the battery pack and is used for a fastener to pass through, so as to realize the connection and fixation of the battery pack and the lower support frame.

[0009] Multiple clamping members are provided, with two clamping members spaced longitudinally on each of the top support frames. Each clamping member and the bottom wall of the top support frame are distributed vertically to form an accommodating space. The accommodating space is used to accommodate the edge of the battery pack. The two clamping members are used to jointly press the battery pack onto the top support frame.

[0010] In some embodiments, one end of the clamping member is rotatably connected to one end of the top support frame away from the opening of the frame body, and the clamping member can rotate downward relative to the top support frame to clamp the edge of the battery pack, or rotate upward to release the battery pack;

[0011] The other end of the clamping member is detachably connected to one end of the top support frame near the opening of the frame.

[0012] In some embodiments, the clamping member includes a clamping rod and a hinge seat. The hinge seat is located at one end of the top support frame away from the opening of the frame. The top opening of the hinge seat and the side of the hinge seat facing the opening of the frame form a receiving groove for accommodating one end of the clamping rod.

[0013] The clamping component also includes a rotating shaft, which passes through the hinge seat and the clamping rod to achieve a rotatable connection between the clamping rod and the hinge seat.

[0014] In some embodiments, the hinge seat includes a connector and a receiving body. The connector is fixed to the bottom of one longitudinal end of the receiving body. The connector is connected and fixed to the side wall of the top support frame. The receiving body is located vertically spaced above the bottom wall of the top support frame. The receiving body forms the receiving groove.

[0015] The hinge seat also includes a support body, which is connected and fixed to the bottom wall of the top support frame and is used to abut against and support the accommodating body.

[0016] In some embodiments, the top support frame has two protruding blocks at one end near the opening of the frame, and the two blocks are arranged in a one-to-one correspondence with the two clamping rods.

[0017] The clamping rod has a slot with a bottom opening at one end near the opening of the frame, and the slot engages with the locking block; and / or, the clamping rod has a first connecting hole at one end near the opening of the frame, and the locking block has a corresponding second connecting hole, the first connecting hole and the second connecting hole are used for connecting parts to pass through, so as to realize the detachable connection between the clamping rod and the locking block.

[0018] In some embodiments, the energy storage device further includes a plurality of mounting frames, which are disposed one-to-one in the plurality of receiving cavities, and each mounting frame is used to support a high-voltage box;

[0019] Each of the aforementioned fixing frames includes two fixing beams, which are spaced apart and enclose a mounting groove. The mounting groove opens to the side facing the opening of the frame body and is used to accommodate the high-voltage box.

[0020] Each of the fixing frames further includes two supports, which are respectively disposed at the bottom of the two fixing beams, and the supports are used to support the fixing beams.

[0021] In some embodiments, the mounting slot has an opening at the top;

[0022] The fixing frame further includes at least two limiting members. Each fixing beam is connected to at least one limiting member. The limiting member includes a first limiting part and a second limiting part. The first limiting part is connected and fixed to the fixing beam. The first limiting parts of the two limiting members are used to jointly abut against the opposite sides of the high-voltage box. The second limiting part is fixed to the top of the first limiting part and is located inside the first limiting part. The second limiting parts of the two limiting members are used to jointly press against the top of the high-voltage box to press the high-voltage box tightly onto the fixing beam.

[0023] In some embodiments, two battery packs are arranged vertically on each frame; all battery packs of each battery pack are connected in series.

[0024] The two battery packs arranged on the same frame are connected in parallel and electrically connected to the high-voltage box arranged on the corresponding frame.

[0025] In some embodiments, all the battery packs of each battery pack are distributed vertically;

[0026] In any two adjacent battery packs of each battery pack, the output terminal of the upper battery pack is connected to the input terminal of the lower battery pack via a cable; the input terminal of the top battery pack is connected to the output terminal of the high-voltage box via a cable, and the output terminal of the bottom battery pack is connected to the input terminal of the high-voltage box via a cable.

[0027] According to another aspect of this application, this application also provides a mobile energy storage system, including a housing and an energy storage device as described in any of the above claims, wherein the energy storage device is disposed inside the housing.

[0028] As can be seen from the above technical solution, this utility model has at least the following advantages and positive effects:

[0029] In this invention, each frame supports a battery pack via each support frame. The battery pack is secured in two ways: first, by using fasteners to lock the battery pack to the lower support frame; second, by utilizing the space between the clamping members and the top support frame to accommodate the edge of the battery pack, and then using two clamping members to press and secure the battery pack to the top support frame. This ensures the connection strength between the battery pack and the support frame, improving the stability of the battery pack and facilitating reliable shock resistance. Furthermore, this design allows for the connection and fixation of the battery pack to the top support frame within a limited space, without requiring a large additional operating space, thus saving space and simplifying operation.

[0030] In addition, placing the high-voltage box at the bottom of the frame and below the battery pack facilitates operation and maintenance of the high-voltage box. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the energy storage device in this embodiment.

[0032] Figure 2 This is a schematic diagram of the framework in this embodiment.

[0033] Figure 3 This is a schematic diagram of the battery pack structure in this embodiment.

[0034] Figure 4 This is a diagram illustrating the connection and fixation between the battery pack and the lower support frame in this embodiment.

[0035] Figure 5 This is a diagram illustrating the connection and fixation between the battery pack and the top support frame in this embodiment.

[0036] Figure 6 This is a schematic diagram of the structure of the fixing frame in this embodiment.

[0037] The annotations in the attached figures are explained as follows:

[0038] 1. Frame; 11. Frame body; 111. Column; 12. Support frame; 12a. Top support frame; 12b. Lower support frame; 121. Support beam; 1211. Baffle; 122. Load-bearing beam; 21. Battery pack; 211. Housing; 212. Edge; 213. Perforation; 3. High-voltage box; 4. Fastener; 5. Clamping element; 51. Clamping rod; 52. Hinge seat; 521. Connector 522. Receiving body; 53. Pressing body; 54. Slot; 55. Block; 6. Connecting piece; 71. Locking plate; 72. Locking fastener; 8. Fixing frame; 81. Fixing beam; 811. Bearing plate; 812. Limiting plate; 813. Positioning plate; 82. Bracket; 821. Vertical plate; 822. Bending plate; 83. Limiting piece; 831. First limiting part; 832. Second limiting part. Detailed Implementation

[0039] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0040] In the description of this application, it should be understood that, in the embodiments shown in the accompanying drawings, the indications of direction or positional relationships (such as up, down, left, right, front, and back) are merely for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the accompanying drawings. If the description of the positions of these elements changes, these directional indications also change accordingly.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] This application provides a mobile energy storage system for storing electrical energy and supplying power to external power users. The mobile energy storage system includes a housing and energy storage devices, with the energy storage devices housed within the housing to facilitate loading and transportation. The housing has a hollow cuboid structure.

[0043] The following detailed description, in conjunction with the accompanying drawings, provides specific embodiments of the energy storage device of this application.

[0044] Figure 1This is a schematic diagram of the energy storage device in this embodiment.

[0045] refer to Figure 1 The energy storage device includes multiple frames 1, multiple battery packs, multiple high-voltage boxes 3, and multiple clamping components 5.

[0046] Among them, multiple frames 1 are distributed adjacently. Specifically, the multiple frames 1 are arranged in an array with two rows and multiple columns.

[0047] For ease of description, the direction in which each row of frame 1 is arranged is taken as the vertical axis, and the direction in which two rows of frame 1 are located is taken as the horizontal axis, and the same applies below.

[0048] Figure 2 This is a schematic diagram of the structure of frame 1 in this embodiment.

[0049] refer to Figure 1 and Figure 2 Each frame 1 has an opening on one side in the horizontal direction. Specifically, the opening directions of each row of frames 1 are the same, while the opening directions of two rows of frames 1 are opposite.

[0050] Each frame 1 includes a frame 11 and multiple support frames 12.

[0051] The frame 11 has an opening on one lateral side. The frame 11 forms a receiving cavity with a bottom opening. Exemplarily, each frame 11 includes a plurality of uprights 111, which are spaced apart circumferentially and enclose a cuboid structure with an opening on one lateral side and a bottom. Exemplarily, the plurality of uprights 111 can be divided into two groups of uprights 111, which are spaced apart longitudinally, and each group of uprights 111 includes at least two uprights 111 spaced apart longitudinally.

[0052] In each row of frames 1, any two adjacent frames 11 along the longitudinal direction can share the same set of uprights 111. In each column of frames 1, the two uprights 111 at one adjacent end of two adjacent frames 11 along the transverse direction can share the same set of uprights 111. This reduces the number of uprights 111, saves materials, and reduces the weight of the mounting frame, so as to achieve lightweight mounting frame.

[0053] Multiple support frames 12 are vertically spaced and connected inside the frame 11, with each support frame 12 and the frame 11 enclosing a cavity. This design can effectively improve the space utilization of the mounting frame and help improve the internal space utilization of the mobile energy storage system.

[0054] For example, each support frame 12 includes two support beams 121. The two support beams 121 are connected to the longitudinal ends of the frame 11 one by one, and each support beam 121 extends laterally. Specifically, the two support beams 121 are arranged in a one-to-one correspondence with the two sets of uprights 111 of the frame 11, and each support beam 121 is connected and fixed to all the uprights 111 of the set of uprights 111.

[0055] The support beam 121 includes a base plate and side plates. Specifically, the base plate extends horizontally, and the side plates stand vertically on top of the base plate, serving to be attached to and fixed to the column 111. That is, the support beam 121 has an L-shaped cross-section.

[0056] The support beam 121 also includes a baffle 1211, which is fixed to the end of the side plate away from the opening of the frame 11, and the baffle 1211 and the bottom plate are located on the same side of the side plate. The baffle 1211 extends longitudinally. A positioning pin is protruding on the side of the baffle 1211 facing the opening of the frame 11, and the positioning pin extends laterally.

[0057] That is, the two support beams 121 of each support frame 12 and the frame 11 enclose a receiving cavity with an opening on one side and an opening at the top. The opening of the receiving cavity in the lateral direction is on the same side as the opening of the frame 11, so that the receiving cavity and the opening of the frame 11 are connected, which facilitates subsequent operation.

[0058] Optionally, the support frames 12 of two horizontally adjacent frames 1 are arranged in a one-to-one correspondence, and the support beams 121 of the corresponding support frames 12 are integrally formed. In this case, the support beams 121 of the corresponding support frames 12 of the two horizontally adjacent frames 1 share the same baffle 1211, and the positioning pins pass through and are fixed to the baffle 1211, with the two ends of the positioning pins protruding from the baffle 1211 respectively. This design simplifies the structure of the support frame 12.

[0059] Each support frame 12 may further include multiple load-bearing beams 122, which are laterally spaced and connected to the bottom of the two support beams 121. Specifically, each load-bearing beam 122 extends longitudinally, and its two longitudinal ends are respectively fixed to the bottom of the base plate of the two support beams 121. At least a portion of the top surface of the load-bearing beam 122 along its length is flush with the top surface of the base plate to increase the support area of ​​the support frame 12.

[0060] For example, the thickness at both ends of the longitudinal direction of the load-bearing beam 122 is less than the thickness at the middle, so that after the longitudinal ends of the load-bearing beam 122 are connected and fixed to the bottom of the base plate, the middle part of the load-bearing beam 122 can protrude upward, making it easier to achieve flush with the top surface of the base plate.

[0061] In this embodiment, the multiple support frames 12 of each frame 1 can be divided into a top support frame 12a and multiple lower support frames 12b, with the top support frame 12a located above all the lower support frames 12b. Each lower support frame 12b has multiple through holes spaced laterally at both ends along its longitudinal direction. Specifically, each support beam 121 of each lower support frame 12b has multiple through holes spaced laterally on its bottom plate.

[0062] refer to Figure 1In this embodiment, two battery packs are arranged vertically on each frame 1. Each battery pack includes multiple battery cells 21. Each support frame 12 within each frame 1 supports one battery cell 21, so that the two battery packs are distributed vertically, and the battery cells 21 of each battery pack are also distributed vertically. This design makes reasonable use of the internal space of the housing in the height direction, enabling more battery cells 21 to be placed inside the housing, which helps to expand the energy storage capacity of the mobile energy storage system and improve the performance of the mobile energy storage system. For example, each battery pack may include three or four or more battery cells 21.

[0063] In other embodiments, each frame 1 can accommodate one battery pack and part of the battery pack 21 of another battery pack, while the remaining battery pack 21 of the other battery pack can be accommodated on an adjacent frame 1. For example, a maximum of 8 battery packs 21 can be arranged in each frame 1, and each battery pack includes 5 battery packs 21. In this case, the 5 battery packs 21 of one battery pack can be distributed from bottom to top in one frame 1, and the 3 battery packs 21 of another battery pack can be distributed from top to bottom in the same frame 1. After the frame 1 reaches its maximum load capacity, the remaining 2 battery packs 21 of the other battery pack are arranged from top to bottom on the upper part of an adjacent frame 1, so that the 5 battery packs 21 of the other battery pack can be adjacent and close to each other.

[0064] Alternatively, each frame 1 can accommodate two battery packs and part of the battery pack 21 of another battery pack, while the remaining battery pack 21 of the other battery pack can be accommodated on an adjacent frame 1. For example, a maximum of 8 battery packs 21 can be arranged in each frame 1, and each battery pack includes 3 battery packs 21. In this case, 6 battery packs 21 of two battery packs can be distributed from bottom to top in one frame 1, and 2 battery packs 21 of the remaining battery pack can be distributed from top to bottom in the same frame 1. After the frame 1 reaches its maximum load capacity, the remaining 1 battery pack 21 of the remaining battery pack is arranged on the top support frame 12a of the adjacent frame 1, so that the 3 battery packs 21 of the remaining battery pack can be adjacent and close to each other.

[0065] The number of battery packs 21 in each battery group can be set according to actual conditions. For example, the battery packs can be set according to the voltage range that the external power supply can withstand, so as to ensure the power supply safety and stability of the power supply.

[0066] refer to Figure 1 In this embodiment, in any two adjacent battery packs 21 of each battery group, the output terminal of the upper battery pack 21 and the input terminal of the lower battery pack 21 are connected by a cable to realize series connection between all battery packs 21 of each battery group. This design facilitates cable arrangement, makes it easier to organize the wiring of the battery group, and optimizes the overall layout.

[0067] Of course, in other embodiments, in any two adjacent battery packs 21 of each battery group, the input end of the upper battery pack 21 and the output end of the lower battery pack 21 can be connected by a cable to realize the series connection between all battery packs 21 of each battery group.

[0068] The cable and battery pack 21 are detachably connected, facilitating quick disconnection and reconnection between them, allowing for adjustments to the battery pack grouping as needed. Specifically, each end of the cable has a connecting terminal, and each battery pack 21 has two wiring terminals. Each connecting terminal is plugged into one wiring terminal to connect the cable to the battery pack 21. This connection includes both physical and electrical connections.

[0069] refer to Figure 1 and Figure 2 Each battery pack 21 is connected and fixed to the support frame 12, which can limit and fix the battery pack 21 to prevent displacement during movement, thereby more effectively ensuring the safety and stability of the battery pack 21.

[0070] Figure 3 This is a schematic diagram of the battery pack 21 in this embodiment.

[0071] refer to Figure 1 , Figure 2 , Figure 3 The battery pack 21 includes a housing 211 and battery cells disposed inside the housing 211. The housing 211 includes a main body and a cover plate. The main body is hollow inside and has an opening at the bottom. The cover plate covers the bottom opening of the main body and is connected and fixed to the main body.

[0072] In this embodiment, the shell body includes a main body portion and a flange. The main body portion is hollow inside and open at the bottom. The flange protrudes outward in the circumferential direction from the bottom of the main body portion, and the flange is connected and fixed to the cover plate.

[0073] In this embodiment, the edges 212 at both longitudinal ends of the battery pack 21 are provided with a plurality of through holes 213 at transverse intervals, and the plurality of through holes 213 are arranged one-to-one with a plurality of through holes on the lower support frame 12b. The edges 212 of the battery pack 21 refer to the flange and the cover portion covered by the vertical projection of the flange. Each through hole 213 includes a first hole on the flange and a second hole on the cover.

[0074] Figure 4 This is a diagram illustrating the connection and fixation between the battery pack 21 and the lower support frame 12b in this embodiment.

[0075] refer to Figure 4In practical applications, the battery pack 21 arranged on the lower support frame 12b can be connected and fixed by making each through hole 213 on the battery pack 21 correspond to each through hole on the lower support frame 12b, so as to allow a fastener 4 to pass through, thereby locking the battery pack 21 to the lower support frame 12b, improving the stability of the battery pack 21, and facilitating a reliable anti-vibration effect.

[0076] In this embodiment, the fastener 4 can be a bolt, or the fastener 4 can be composed of a bolt and a nut.

[0077] refer to Figure 1 and Figure 2 In this embodiment, each top support frame 12a is provided with two clamping members 5 spaced longitudinally, and the two clamping members 5 cooperate to realize the connection and fixation between the battery pack 21 and the top support frame 12a.

[0078] Figure 5 This is a diagram illustrating the connection and fixation between the battery pack 21 and the top support frame 12a in this embodiment.

[0079] refer to Figure 1 , Figure 2 and Figure 5 Each clamping member 5 is vertically spaced from the bottom wall of the top support frame 12a to form an accommodating space, which is used to accommodate the longitudinal sides of the edge 212 of the battery pack 21. The two clamping members 5 are used to jointly press the battery pack 21 onto the top support frame 12a. Specifically, each clamping member 5 is used to press the lateral side of the edge 212 of the battery pack 21.

[0080] In this embodiment, one end of the clamping member 5 is rotatably connected to the end of the top support frame 12a that is away from the opening of the frame 11. The clamping member 5 can rotate downward relative to the top support frame 12a to extend horizontally to clamp the edge 212 of the battery pack 21, or rotate upward to release the battery pack 21.

[0081] Specifically, the clamping member 5 includes a clamping rod 51 and a hinge seat 52. The hinge seat 52 is located at the end of the top support frame 12a opposite to the opening of the frame 11. The top opening of the hinge seat 52 and the side of the hinge seat 52 facing the opening of the frame 11 form a receiving groove for accommodating one end of the clamping rod 51. The clamping member 5 also includes a rotating shaft that passes through the hinge seat 52 and the clamping rod 51 to achieve a rotatable connection between the clamping rod 51 and the hinge seat 52.

[0082] The hinge seat 52 may include a connector 521 and a receiving body 522. The connector 521 is fixed to the bottom of one longitudinal end of the receiving body 522 and is connected and fixed to the side wall of the top support frame 12a. The receiving body 522 is located vertically at intervals above the bottom wall of the top support frame 12a. The receiving body 522 forms a receiving groove.

[0083] The hinge seat 52 may further include a support body, which is connected and fixed to the bottom wall of the top support frame 12a. The support body abuts against the supporting accommodating body 522, thereby improving the stability of the accommodating body 522. Specifically, the support body includes a vertically extending support portion and a connecting portion and a receiving portion located at the upper and lower ends of the support portion. The connecting portion and the receiving portion are located on the lateral sides of the support portion. The connecting portion is attached to the bottom plate of the support beam 121 and is connected and fixed to the bottom plate. The receiving portion is attached to the bottom of the accommodating body 522 and is connected and fixed to the accommodating body 522. That is, the support body in this embodiment is Z-shaped, which gives the support body better bending stiffness and makes it less prone to deformation, thus providing more stable support for the accommodating body 522 and improving the stability of the accommodating body 522.

[0084] In this embodiment, the clamping member 5 further includes a plurality of clamping bodies 53. The plurality of clamping bodies 53 are spaced apart on the side of the clamping rod 51 facing the top support frame 12a, and can rotate with the clamping rod 51 to move upward away from the edge 212 of the battery pack 21, or downward close to the edge 212 of the battery pack 21 and abut against the edge 212 of the battery pack 21, thereby pressing the battery pack 21 onto the top support frame 12a.

[0085] In this embodiment, the other end of the clamping member 5 is detachably connected to the end of the top support frame 12a near the opening of the frame 11. This allows the clamping member 5 to be fixed to the top support frame 12a when it rotates downward to extend horizontally and press against the edge 212 of the battery pack 21, thus locking the clamping rod 51 and preventing the clamping member 5 from rotating and loosening the battery pack 21 during movement. This keeps the clamping member 5 pressing the battery pack 21 against the top support frame 12a, improving the stability of the battery pack 21. Alternatively, when it is necessary to remove the battery pack 21, the clamping rod 51 can be detached from the top support frame 12a to unlock it.

[0086] For example, the top support frame 12a has two protruding locking blocks 55 near the opening of the frame 11, and the two locking blocks 55 are arranged correspondingly to the two clamping rods 51. The clamping rod 51 has a bottom opening slot 54 near the opening of the frame 11, and the slot 54 engages with the locking blocks 55. Specifically, the two locking blocks 55 are arranged correspondingly to the two support beams 121.

[0087] And / or, the end of the clamping rod 51 near the opening of the frame 11 is provided with a first connecting hole, and the corresponding second connecting hole is provided on the locking block 55. The first connecting hole and the second connecting hole are used for the connector 6 to pass through, so as to realize the detachable connection between the clamping rod 51 and the locking block 55. This design can further improve the connection strength between the clamping rod 51 and the top support frame 12a, so as to improve the clamping and fixing effect on the battery pack 21.

[0088] In this embodiment, the connector 6 can be a bolt, or the connector 6 can be composed of a bolt and a nut.

[0089] In practical applications, each battery pack 21 can be installed and fixed on the frame 1 sequentially from bottom to top. This leaves sufficient operating space above for connecting and fixing the battery pack 21 to the lower support frame 12b using fasteners 4. Furthermore, since the operating space above the top support frame 12a is limited, the clamping rod 51 is rotated horizontally relative to the hinge seat 52, and the clamping rod 51 is initially fixed to the top support frame 12a through the engagement of the locking block 55 and the locking slot 54. Then, the clamping rod 51 is connected and fixed to the locking block 55 using the connector 6 to press and fix the battery pack 21 onto the top support frame 12a. This method is simple and convenient, requiring no increase in the height of the enclosure, and can adapt to completing the connection and fixing operation between the battery pack 21 and the top support frame 12a within a limited operating space.

[0090] Optionally, the energy storage device also includes multiple locking components. Each locking component is located at one end of a support frame 12 facing the opening of the frame 11. Each locking component includes two locking plates 71, which are arranged at both longitudinal ends of the support frame 12. Each locking plate 71 is connected and fixed to the lateral outer side of the support frame 12, and each locking plate 71 protrudes upward from the bottom wall of the support frame 12. The upper part of the locking plate 71 is used to abut against the battery pack 21. The upper part of the locking plate 71 is provided with a locking hole, and the battery pack 21 is provided with an opening. The locking hole and the opening are used for the fastener 72 to pass through, so as to realize the connection and fixation between the locking plate 71 and the battery pack 21, and further fix the battery pack 21. Specifically, the two locking plates 71 of each locking component are correspondingly arranged with the two support beams 121 of each support frame 12.

[0091] In this embodiment, the locking components and baffles 1211 provided for each support frame 12 cooperate to limit the battery pack 21 in the lateral direction. The fasteners 4 or clamping members 5 can limit the battery pack 21 in the vertical direction. At the same time, the connection and fixation of the battery pack 21 by the locking components 72 and the connection and fixation of the battery pack 21 by the fasteners 4 can further restrict the movement of the battery pack 21, thereby achieving multi-directional limitation of the battery pack 21 and improving the fixation stability and reliability of the battery pack 21.

[0092] refer to Figure 1 Multiple high-voltage boxes 3 are housed one-to-one in the receiving cavities at the bottom of multiple frames 11. Each high-voltage box 3 is electrically connected to at least one battery pack. The high-voltage box 3 serves as the high-voltage power circuit control structure of the mobile energy storage system. Its main function is to connect the battery pack to the external power system, enabling the input and output of electrical energy and ensuring the normal operation of all components. It possesses overcurrent protection, overvoltage protection, undervoltage protection, and short-circuit protection functions, ensuring that the mobile energy storage system can promptly disconnect the circuit in abnormal situations, protecting the equipment and ensuring safety. Its built-in sensors and monitoring devices monitor parameters such as voltage, current, and temperature in real time, enabling information transmission and precise control.

[0093] In this configuration, the high-voltage box 3 and two battery packs are arranged within the same frame 1. The two battery packs are connected in parallel and electrically connected to the high-voltage box 3 respectively. That is, each battery pack is connected in series with a high-voltage box 3 to form an independent circuit. Specifically, each high-voltage box 3 has two input terminals and two output terminals. One input terminal and one output terminal are connected in series with one battery pack to achieve electrical connection. In other words, in this embodiment, each high-voltage box 3 has a one-to-two function, independently connecting the two upper battery packs. This design facilitates wiring and optimizes the overall layout. Furthermore, since the output voltage of the mobile energy storage system is limited by the voltage range required by the external power supply, the number of battery packs 21 in each battery group is indirectly limited. In this case, compared with the one-to-one arrangement of the high-voltage box 3 in the prior art, each high-voltage box 3 in this embodiment adopts a one-to-two arrangement, and two battery packs can be arranged on each frame 1. In this way, while the output voltage of the mobile energy storage system meets the voltage range required by the external power supply, the internal space of the box in the height direction can be reasonably utilized, and more battery packs 21 can be placed without expanding the length and width of the box. This helps to expand the storage capacity of the mobile energy storage system and improve the performance of the mobile energy storage system.

[0094] For example, on the same frame 1, in any two adjacent battery packs 21 of each battery group, the output terminal of the upper battery pack 21 is connected to the input terminal of the lower battery pack 21 via a cable, thereby achieving series connection between all battery packs 21 of each battery group. Furthermore, in each battery group, the input terminal of the top battery pack 21 is connected to one of the output terminals of the high-voltage box 3 via a cable, and the output terminal of the bottom battery pack 21 is connected to the input terminal of the high-voltage box 3 via a cable, thereby achieving series connection between all battery packs 21 of each battery group and the high-voltage box 3. This design facilitates cable arrangement, makes it easier to organize the wiring between the battery group and the high-voltage box 3, and optimizes the overall layout.

[0095] It should be noted that the battery pack 21 located at the top refers to the battery pack 21 located at the top layer of each battery pack. Similarly, the battery pack 21 located at the bottom refers to the battery pack 21 located at the bottom layer of each battery pack.

[0096] Of course, in other embodiments, on the same frame 1, in any two adjacent battery packs 21 of each battery group, the input end of the upper battery pack 21 and the output end of the lower battery pack 21 can be connected by a cable. Based on this, in each battery group, the output end of the top battery pack 21 is connected to one of the input ends of the high voltage box 3 by a cable, and the input end of the bottom battery pack 21 is connected to the output end of the high voltage box 3 by a cable.

[0097] The cable is detachably connected to the high-voltage box 3, facilitating quick disconnection and reconnection. This allows for easy removal of the high-voltage box 3 for maintenance and replacement. Specifically, each end of the cable has a connecting terminal, and each high-voltage box 3 has four wiring terminals. Each connecting terminal is plugged into a corresponding wiring terminal to connect the cable to the high-voltage box 3. This connection includes both physical and electrical connections.

[0098] refer to Figure 1 and Figure 2 In this embodiment, the energy storage device also includes multiple fixing frames 8, which are arranged one-to-one in multiple receiving cavities, and each fixing frame 8 is used to support a high-voltage box 3.

[0099] Figure 6 This is a schematic diagram of the structure of the fixing frame 8 in this embodiment.

[0100] refer to Figure 6 For example, the mounting frame 8 includes two fixed beams 81, which are spaced apart and enclose a mounting groove. The mounting groove opens on one side facing the opening of the frame 11. The mounting groove is used to accommodate the high-voltage box 3. This design allows the mounting groove to communicate with the opening of the frame 11, so as to facilitate the removal and placement of the high-voltage box 3 relative to the mounting frame 8.

[0101] Specifically, each fixed beam 81 includes a bearing plate 811 and a limiting plate 812. The bearing plate 811 extends horizontally, and the bearing plates 811 of the two fixed beams 81 jointly support the high-voltage box 3. The limiting plate 812 is erected on the top of the end of the bearing plate 811 away from the other fixed beam 81, and the limiting plates 812 of the two fixed beams 81 are arranged on both sides of the high-voltage box 3 in the longitudinal direction to jointly abut against and limit the high-voltage box 3 in the longitudinal direction. Each fixed beam 81 also includes a positioning plate 813 fixed between the bearing plate 811 and the limiting plate 812. The positioning plate 813 is located on the side of the bearing plate 811 away from the opening of the frame 11, and the positioning plates 813 of the two fixed beams 81 cooperate to abut against and limit the high-voltage box 3 in the transverse direction. That is, the bearing plate 811, the limiting plate 812, and the positioning plate 813 of the two fixed beams 81 together form a receiving groove with an opening on the side of the transverse direction close to the opening of the frame 11 and an opening at the top. The fixed beam 81 is roughly an L-shaped structure.

[0102] The fixing frame 8 also includes two supports 82, which are correspondingly disposed at the bottom of the two fixing beams 81. The supports 82 are used to support the fixing beams 81. For example, the supports 82 include multiple vertical plates 821 and multiple bent plates 822. The multiple vertical plates 821 are fixed longitudinally at intervals to the bottom of the bearing plate 811, and the vertical plates 821 and the limiting plate 812 are arranged on opposite sides of the bearing plate 811. A bent plate 822 is fixed to the bottom of each vertical plate 821, and the bent plate 822 is located on the side of the vertical plate 821 facing the limiting plate 812. The bent plate 822 extends horizontally to abut against the bottom of the housing, thereby increasing the contact area between the fixing frame 8 and the housing and improving the stability of the fixing frame 8.

[0103] Each bracket 82 is integrally formed with the corresponding fixed beam 81. This design gives the whole structure consisting of the bracket 82 and the fixed beam 81 high structural strength, which can improve the bending strength and stability of the whole structure.

[0104] The fixing frame 8 also includes at least two limiting members 83, with at least one limiting member 83 correspondingly connected to each fixing beam 81. Each limiting member 83 includes a first limiting portion 831 and a second limiting portion 832. The first limiting portion 831 is connected and fixed to the fixing beam 81, and the first limiting portions 831 of the two limiting members 83 are used to jointly abut against the opposite sides of the high-voltage box 3. The second limiting portion 832 is fixed to the top of the first limiting portion 831 and located inside the first limiting portion 831. The second limiting portions 832 of the two limiting members 83 are used to jointly press against the top of the high-voltage box 3 to press the high-voltage box 3 tightly onto the fixing beam 81. Specifically, the first limiting portion 831 is attached to and connected to the side of the limiting plate 812 facing away from the bearing plate 811, and the first limiting portion 831 extends vertically. The second limiting portion 832 is fixed to the top of the side of the first limiting portion 831 facing the bearing plate 811, and the second limiting portion 832 extends horizontally. That is, the limiting component 83 has an L-shaped cross-section.

[0105] As can be seen from the above technical solutions, the purpose of this application is not to improve the structure or function of the battery pack 21 and the high-voltage box 3, nor to improve the connection between the high-voltage box 3 and the external power system, nor to improve the power supply of the mobile energy storage system to the power user. All of the above can refer to the existing technology.

[0106] In addition, this application has at least the following advantages and positive effects:

[0107] In this application, in each frame 1, based on supporting a battery pack 21 by each support frame 12, the battery pack 21 is fixed in two ways: First, the battery pack 21 is locked to the lower support frame 12b using fasteners 4. Second, the edge 212 of the battery pack 21 is accommodated by the space formed between the clamping member 5 and the top support frame 12a, and the battery pack 21 is pressed and fixed to the top support frame 12a by the two clamping members 5. This ensures the connection strength between the battery pack 21 and the support frame 12, thereby improving the stability of the battery pack 21 and achieving reliable shock resistance. Furthermore, this design allows for the connection and fixing of the battery pack 21 to the top support frame 12a within a limited space without requiring a large additional operating space, saving space and simplifying operation.

[0108] Furthermore, a high-voltage box 3 and two battery packs are arranged on the same frame 1, with the high-voltage box 3 mounted below the battery packs via a fixing bracket 8. The high-voltage box 3 can independently connect to the two upper battery packs. This design facilitates wiring, optimizes the overall layout, and makes operation and maintenance of the high-voltage box 3 convenient. In addition, since the output voltage of the mobile energy storage system is limited by the voltage range required by the external power supply, the number of battery packs 21 in each battery pack is indirectly limited. Compared to the one-to-one arrangement of the high-voltage box 3 in the prior art, this embodiment adopts a one-to-two arrangement for each high-voltage box 3, and two battery packs can be arranged on each frame 1. This allows for the efficient use of the internal space in the height direction of the box, without increasing the length and width of the box, while ensuring that the output voltage of the mobile energy storage system meets the voltage range required by the external power supply. This enables the placement of more battery packs 21, helping to increase the storage capacity of the mobile energy storage system and improve its performance.

[0109] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. An energy storage device, characterized in that, include: Multiple battery packs, each of which includes multiple battery bags; Multiple high-voltage boxes, each of which is electrically connected to at least one of the battery packs; Multiple frames, each frame including a frame body and multiple support frames, the frame body having an opening on one side in the lateral direction, and each frame body having a receiving cavity formed at its bottom, each receiving cavity being used to receive one of the high-voltage boxes; multiple support frames are vertically spaced and connected inside the frame body, and the support frames are located above the receiving cavities, each support frame being used to support one of the battery packs; The plurality of support frames include a plurality of lower support frames and a top support frame located above all the lower support frames; each of the lower support frames has a plurality of through holes spaced laterally at both ends of its longitudinal direction, and each through hole is arranged corresponding to a through hole on the edge of the battery pack and is used for a fastener to pass through, so as to realize the connection and fixation of the battery pack and the lower support frame. Multiple clamping members are provided, with two clamping members spaced longitudinally on each of the top support frames. Each clamping member and the bottom wall of the top support frame are distributed vertically to form an accommodating space. The accommodating space is used to accommodate the edge of the battery pack. The two clamping members are used to jointly press the battery pack onto the top support frame.

2. The energy storage device according to claim 1, characterized in that, One end of the clamping member is rotatably connected to the end of the top support frame that is away from the opening of the frame. The clamping member can rotate downward relative to the top support frame to clamp the edge of the battery pack, or rotate upward to release the battery pack. The other end of the clamping member is detachably connected to one end of the top support frame near the opening of the frame.

3. The energy storage device according to claim 2, characterized in that, The clamping component includes a clamping rod and a hinge seat. The hinge seat is located at one end of the top support frame away from the opening of the frame. The top opening of the hinge seat and the side of the hinge seat facing the opening of the frame form a receiving groove. The receiving groove is used to receive one end of the clamping rod. The clamping component also includes a rotating shaft, which passes through the hinge seat and the clamping rod to achieve a rotatable connection between the clamping rod and the hinge seat.

4. The energy storage device according to claim 3, characterized in that, The hinge seat includes a connector and a receiving body. The connector is fixed to the bottom of one longitudinal end of the receiving body. The connector is connected and fixed to the side wall of the top support frame. The receiving body is located vertically at intervals above the bottom wall of the top support frame. The receiving body forms the receiving groove. The hinge seat also includes a support body, which is connected and fixed to the bottom wall of the top support frame and is used to abut against and support the accommodating body.

5. The energy storage device according to claim 3, characterized in that, Two locking blocks protrude from one end of the top support frame near the opening of the frame body, and the two locking blocks are arranged in a one-to-one correspondence with the two clamping rods; The clamping rod has a slot with a bottom opening at one end near the opening of the frame, and the slot engages with the locking block; and / or, the clamping rod has a first connecting hole at one end near the opening of the frame, and the locking block has a corresponding second connecting hole, the first connecting hole and the second connecting hole are used for connecting parts to pass through, so as to realize the detachable connection between the clamping rod and the locking block.

6. The energy storage device according to claim 1, characterized in that, The energy storage device also includes multiple mounting frames, which are arranged one-to-one in the multiple receiving cavities, and each mounting frame is used to support a high-voltage box. Each of the aforementioned fixing frames includes two fixing beams, which are spaced apart and enclose a mounting groove. The mounting groove opens to the side facing the opening of the frame body and is used to accommodate the high-voltage box. Each of the fixing frames further includes two supports, which are respectively disposed at the bottom of the two fixing beams, and the supports are used to support the fixing beams.

7. The energy storage device according to claim 6, characterized in that, The mounting slot has an opening at the top; The fixing frame further includes at least two limiting members. Each fixing beam is connected to at least one limiting member. The limiting member includes a first limiting part and a second limiting part. The first limiting part is connected and fixed to the fixing beam. The first limiting parts of the two limiting members are used to jointly abut against the opposite sides of the high-voltage box. The second limiting part is fixed to the top of the first limiting part and is located inside the first limiting part. The second limiting parts of the two limiting members are used to jointly press against the top of the high-voltage box to press the high-voltage box tightly onto the fixing beam.

8. The energy storage device according to claim 1, characterized in that, Two battery packs are arranged vertically on each of the frames; all battery packs of each battery pack are connected in series. The two battery packs arranged on the same frame are connected in parallel and electrically connected to the high-voltage box arranged on the corresponding frame.

9. The energy storage device according to claim 8, characterized in that, All the battery packs in each of the battery packs are distributed vertically; In any two adjacent battery packs of each battery pack, the output terminal of the upper battery pack is connected to the input terminal of the lower battery pack via a cable; The input terminal of the battery pack located at the top is connected to the output terminal of the high-voltage box via a cable, and the output terminal of the battery pack located at the bottom is connected to the input terminal of the high-voltage box via a cable.

10. A mobile energy storage system, characterized in that, It includes a housing and an energy storage device as described in any one of claims 1 to 9, wherein the energy storage device is disposed inside the housing.

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