A power grid energy storage box structure

Abstract

The application discloses a power grid energy storage box structure, belongs to the technical field of power grid energy storage box structure, and relates to a cabinet shell, an inner frame is arranged in the cabinet shell, a battery module and an electrical control and conversion unit are installed in the middle of the inner frame, a detachable cabinet door is arranged on the outside of the cabinet shell, universal wheels are installed at the bottom of the cabinet shell, an auxiliary connecting assembly comprises a fixing seat, a reserved sliding groove, a mounting groove, a triggering assembly and a mounting assembly, the top end of the fixing seat is respectively provided with the reserved sliding groove and the mounting groove, the reserved sliding groove is used for moving the mounting assembly in the reserved sliding groove, and the mounting groove is internally provided with a lifting mounting assembly. The application has the beneficial effects that protruding rib plates are uniformly and protrudingly arranged on the inner side of the cabinet door, the protruding rib plates are accurately positioned with the buffer assemblies on the battery connecting pieces, the battery module and the connecting structure are effectively protected, and the damage risk of equipment in the moving process is reduced.

Description

Technical Field

[0001] This application relates to the technical field of power grid energy storage box structure, and in particular to a power grid energy storage box structure. Background Technology

[0002] With the acceleration of the global energy transition, mobile grid energy storage boxes are widely used in scenarios such as grid peak shaving, emergency power supply, and power supply in remote areas due to their flexible deployment and rapid response. The existing mobile energy storage box structure mainly consists of a cabinet shell, cabinet doors, and an internal frame. The internal frame inside the cabinet shell carries the battery module and electrical control and converter units. Under the scheduling of the electrical control unit, the converter unit realizes bidirectional conversion between AC and DC power to complete charging and discharging energy storage, and the system monitors the battery status and thermal management in real time. However, in actual use and transportation, since mobile energy storage boxes are generally used in emergency situations, the cabinet doors facing outwards are prone to direct collisions and bumps with walls, equipment, and obstacles when staff push and transport the energy storage boxes due to the urgency of the situation. Furthermore, since there is no internal cushioning structure for the cabinet doors, the impact is directly transmitted to the battery modules and connecting pieces inside the cabinet, which can easily cause battery pack deformation, terminal damage, loose connections, short circuits, poor contact, or even thermal runaway risks, seriously affecting equipment safety and service life. Furthermore, because the internal space of the entire enclosure is compactly installed, and the length of the external electrical cables is predetermined based on the size of the space, the wiring margin is fixed. Therefore, during subsequent movement, vibration, and maintenance of the entire enclosure, the connectors of the power interfaces may become loose due to long-term pulling, torsion, and vibration loads, resulting in poor contact and even causing problems such as electric arcs and equipment damage. Summary of the Invention

[0003] One of the objectives of this application is to address the significant shortcomings of current grid energy storage box structures in terms of mobility, impact resistance, and electrical connection stability during actual use, and to provide a grid energy storage box structure accordingly.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: a grid energy storage box structure, including a cabinet shell, an inner frame inside the cabinet shell, and a battery module and an electrical control and converter unit installed in the middle of the inner frame. A detachable cabinet door is provided on the outside of the cabinet shell. Universal wheels are installed at the bottom of the cabinet shell to assist the entire energy storage box in movement. A power interface is provided on one side of the top of the cabinet shell for power connection. An auxiliary connection component is provided on the outside of the power interface to assist the installation and disassembly of the power connector. The auxiliary connection component includes a fixing base, a reserved sliding groove, a mounting groove, a trigger component, and an installation component. The top of the fixing base is provided with a reserved sliding groove and a mounting groove, respectively. The reserved sliding groove is used for the installation component to move inside it. A lifting installation component is provided inside the mounting groove.

[0005] Preferably, protruding ribs are evenly distributed on the inner wall of the cabinet door, and the top of the protruding ribs is made of rubber.

[0006] Preferably, the battery module includes a battery pack, a connecting piece, a middle plate, and a buffer assembly. The battery packs are evenly spaced inside the inner frame, and every two battery packs arranged vertically form a group. The two battery packs are connected by a connecting piece, and a middle plate is provided between the two battery packs.

[0007] Preferably, the connecting piece is fixed to the middle plate by fasteners, and buffer components are symmetrically arranged on both sides of the connecting piece for buffering. The position of the buffer components corresponds to the position of the protruding rib.

[0008] Preferably, the buffer assembly includes a protruding post, a connecting rod, a movable plate, and a buffer spring. The top end of the protruding post is connected to the connecting rod, and a movable plate is detachably installed on the top end of the connecting rod. The movable plate moves within a buffer cylinder inside the intermediate plate, and a buffer spring is provided at the top end of the movable plate, which is connected to the inner wall of the buffer cylinder.

[0009] Preferably, the electrical control and converter unit includes an energy storage converter and an energy management system. The energy storage converter is responsible for the bidirectional and efficient conversion of DC and AC power, and the energy management system is responsible for receiving grid commands, monitoring battery status, formulating charging and discharging strategies, and coordinating the safe operation of the entire system.

[0010] Preferably, the triggering component includes a winding shaft, a fixed toothed ring, a movable toothed ring, a connecting post, a limiting block, a pull ring, and a telescopic component. The winding shaft is installed in a hollow groove at the bottom of the mounting slot, and the bottom of the winding shaft is connected to the bottom bearing of the hollow groove. The top end of the winding shaft is provided with a fixed toothed ring coaxially connected to it. The top end of the fixed toothed ring is provided with a movable toothed ring connected by the telescopic component. The top end of the movable toothed ring is connected to the limiting block by the connecting post, and a pull ring is provided at the top end of the limiting block.

[0011] Preferably, the tooth grooves on the fixed tooth ring and the movable tooth ring correspond to the positions of the tooth blocks, and the telescopic assembly between them includes a middle telescopic rod and fixed blocks on both sides. The middle telescopic rod can extend and retract along the travel groove in the fixed block and is provided with a reset force by a built-in spring. A connecting pull wire is wound around the outside of the winding shaft. The limiting block is engaged with the mounting groove, and the pull ring at the top of the limiting block protrudes.

[0012] Preferably, the other end of the connecting wire wound around the outside of the reel is connected to the mounting assembly, and the mounting assembly includes a mounting frame, a return spring, and a connecting slider. The mounting frame is a rectangular structure with a hollow interior, and the shape of the hollow structure corresponds to the shape of the external cable connector. The bottom of the mounting frame is integrally mounted with a connecting slider, and a return spring is provided on one outer wall of the connecting slider and connected to one inner wall of the reserved groove.

[0013] Preferably, a magnetic block is provided on the outer wall of the other side of the connecting slider, and it is magnetically attracted to the inner wall of the corresponding reserved slide groove.

[0014] Compared with the prior art, the beneficial effects of this application are as follows: (1) Protruding ribs are evenly protruding on the inner side of the cabinet door, which are precisely aligned with the buffer components on the battery connection piece. When the cabinet door is impacted by the outside, the protruding ribs will contact the buffer components first. The impact force is absorbed by the elastic deformation of the buffer components, avoiding the impact force from being directly transmitted to the battery pack. This effectively protects the battery module and connection structure, and reduces the risk of equipment damage during movement. In addition, the protruding ribs are designed directly inside the cabinet door, making processing and assembly simple. Without increasing the volume and weight of the cabinet, the layout of the original internal frame does not need to be changed. It can be directly compatible with the existing mobile energy storage cabinet structure, which is conducive to mass promotion and the transformation of old equipment.

[0015] (2) An auxiliary connection component is provided. The internal mounting frame can be snapped or fixed with external connectors by screws and bolts. In the initial state, the internal external connector is tightly connected to the electrical interface to ensure that the enclosure does not loosen or fall off during long-term operation, thus solving the problem of connector loosening caused by space limitations and cable fixing. When it is necessary to disconnect later, it is only necessary to control the mounting frame to move as a whole by triggering the component, thereby driving the connector and electrical interface to separate smoothly, realizing one-click disconnection without manual disassembly, avoiding the problems of plugging and unplugging damage and poor contact. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0017] Figure 2 This is a side view of the structure of the present invention.

[0018] Figure 3 This is a schematic diagram of the main structure of the cabinet shell and cabinet door of the present invention.

[0019] Figure 4 This is a side view of the cabinet shell and cabinet door of the present invention.

[0020] Figure 5 This is a schematic diagram of the cabinet shell and its internal frame structure according to the present invention.

[0021] Figure 6 This is an enlarged structural diagram of the battery module of the present invention.

[0022] Figure 7 This is a schematic diagram of the split structure of the auxiliary connection component of the present invention.

[0023] Figure 8 This is a schematic diagram of the enlarged structure of the trigger component of the present invention.

[0024] Figure 9 This is a schematic diagram of the main structure of the auxiliary connection component of the present invention.

[0025] Figure 10 This is a schematic diagram of the distribution structure of the power interface and auxiliary connection components of the present invention.

[0026] Figure 11 This is a schematic diagram of the connection structure between the connecting piece and the buffer assembly of the present invention.

[0027] Figure 12 This is a magnified schematic diagram of the buffer component of the present invention.

[0028] Figure 13 This is a side view of the auxiliary connection component of the present invention.

[0029] In the diagram: 1. Cabinet outer shell; 11. Inner frame; 2. Cabinet door; 21. Protruding rib; 3. Casters; 4. Power interface; 5. Auxiliary connection components; 51. Fixed base; 52. Reserved slide groove; 53. Mounting groove; 54. Trigger component; 541. Winding shaft; 542. Fixed toothed ring; 543. Movable toothed ring; 544. Connecting column; 545. Limiting block; 546. Pull ring; 547. Telescopic component; 55. Mounting component; 551. Mounting frame; 552. Return spring; 553. Connecting slider; 554. Magnetic block; 6. Battery module; 61. Battery pack; 62. Connecting piece; 63. Middle plate; 64. Buffer component; 641. Protruding column; 642. Connecting rod; 643. Moving plate; 644. Buffer spring. Detailed Implementation

[0030] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only 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, and should not be construed as limiting the specific protection scope of this application.

[0032] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0033] One preferred embodiment of this application, such as Figures 1 to 13As shown, a grid energy storage box structure includes a cabinet shell 1. An inner frame 11 is provided inside the cabinet shell 1, and a battery module 6 and an electrical control and converter unit are installed in the middle of the inner frame 11. A detachable cabinet door 2 is provided on the outside of the cabinet shell 1. Universal wheels 3 are installed at the bottom of the cabinet shell 1 to assist in the movement of the entire energy storage box. A power interface 4 is provided on one side of the top of the cabinet shell 1 for power connection. An auxiliary connection component 5 is provided outside the power interface 4 to assist in the installation and disassembly of the power connector. The auxiliary connection component 5 includes a fixing base 51, a reserved sliding groove 52, a mounting groove 53, a trigger component 54, and a mounting component 55. The top of the fixing base 51 is provided with the reserved sliding groove 52 and the mounting groove 53. The reserved sliding groove 52 allows the mounting component 55 to move within it, and the mounting groove 53 houses a lifting mounting component 55.

[0034] This application provides a grid energy storage box structure with an auxiliary connection component 5. In specific use, firstly, the entire box is moved by the universal wheels 3 at the bottom. After moving to a suitable position, the universal wheels 3 are fixed. At this time, according to the usage requirements, the external connector can be connected to the power interface 4 on the outer wall of the cabinet shell 1. During the connection, firstly, the installation component 55 is separated from the power interface 4 by the trigger component 54. Then, the interface to be connected needs to be connected and fixed to the installation component 55. Afterwards, under the action of the trigger component 54, the installation component 55 is controlled to slide inside the reserved slide groove 52, so that it moves to the position of the power interface 4. This completes the stable engagement and connection between the connector inside the installation component 55 and the power interface 4, ensuring that the entire box can work and be used continuously and stably.

[0035] Furthermore, this application also includes a buffer structure, specifically based on... Figure 6 , Figure 11 and Figure 12 As shown, protruding ribs 21 are evenly distributed on the inner wall of the cabinet door 2, and the top of the protruding ribs 21 is made of rubber.

[0036] The battery module 6 includes a battery pack 61, a connecting piece 62, an intermediate plate 63, and a buffer assembly 64. The battery packs 61 are arranged at equal intervals inside the inner frame 11, and every two battery packs 61 arranged vertically are set as a group. The two battery packs 61 are connected by the connecting piece 62, and an intermediate plate 63 is arranged in the middle of the two battery packs 61.

[0037] The connecting piece 62 is fixed to the intermediate plate 63 by fasteners, and buffer components 64 are symmetrically arranged on both sides of the connecting piece 62 for buffering. The position of the buffer components 64 corresponds to the position of the protruding rib 21.

[0038] The buffer assembly 64 includes a protruding post 641, a connecting rod 642, a movable plate 643, and a buffer spring 644. The top end of the protruding post 641 is connected to the connecting rod 642, and the movable plate 643 is detachably installed on the top end of the connecting rod 642. The movable plate 643 moves within the buffer cylinder inside the intermediate plate 63, and the top end of the movable plate 643 is provided with a buffer spring 644 that is connected to the inner wall of the buffer cylinder.

[0039] Specifically, when the staff moves the entire cabinet using the casters 3, the cabinet door 2 will frequently collide with external equipment, causing it to move under impact. When it is impacted, the protruding rib 21 on its inner side will also be impacted. Since its position corresponds to the position of the buffer assembly 64, the impact force will be transmitted to the protruding post 641 on the buffer assembly 64. The protruding post 641 moves inward, which will drive the moving plate 643 through the connecting rod 642 to compress the buffer spring 644 in the buffer cylinder, thus completing the buffering work. The buffer spring 644 has a buffer rubber sleeve in the middle for further buffering. In addition, buffer rubber is provided on the outer wall of the protruding rib 21 and the outer wall of the protruding post 641 to ensure more efficient buffering.

[0040] The electrical control and converter unit includes an energy storage converter and an energy management system. The energy storage converter is responsible for the bidirectional and efficient conversion of DC and AC power, while the energy management system is responsible for receiving grid commands, monitoring battery status, formulating charging and discharging strategies, and coordinating the safe operation of the entire system.

[0041] The specific charging and discharging principle is as follows: AC power from the external power grid is connected to the inside of the cabinet through power interface 4. The current enters the electrical control and converter unit, where the energy storage converter performs AC / DC conversion, rectifying the high-voltage AC power into DC power suitable for battery charging. The DC power is delivered to the battery module 6 through copper busbars or cables laid on the inner frame 11. The connecting piece 62 on the outer wall of the battery module 6 is responsible for connecting the battery cells in series. At this time, the energy management system monitors the voltage and temperature of the battery pack 61 in real time and controls the charging current to ensure that electrical energy is safely converted into chemical energy and stored in the battery pack 61. Subsequently, when the energy management system detects a power grid outage, reaches the preset "peak power period", or receives an external load request, it issues a discharge command. The DC power output by the battery module 6 flows back to the electrical control and converter unit, and the energy storage converter performs DC / AC inversion, converting the DC power into standard AC power. The converted AC power is output through the power interface 4 at the top and delivered to the external power grid or directly to power the equipment via cables stably connected by the auxiliary connection component 5.

[0042] As a further preferred embodiment, the principle and structure of the trigger component 54 controlling the movement of the installation component 55 are as follows: Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 13 As shown, the triggering component 54 includes a winding shaft 541, a fixed toothed ring 542, a movable toothed ring 543, a connecting post 544, a limiting block 545, a pull ring 546, and a telescopic component 547. The winding shaft 541 is installed in the hollow groove at the bottom of the mounting groove 53, and the bottom of the winding shaft 541 is connected to the bottom bearing of the hollow groove. The top end of the winding shaft 541 is provided with a fixed toothed ring 542 that is coaxially connected to it. The top end of the fixed toothed ring 542 is provided with a movable toothed ring 543 connected by the telescopic component 547. The top end of the movable toothed ring 543 is connected to the limiting block 545 through the connecting post 544. The top end of the limiting block 545 is provided with a pull ring 546.

[0043] The toothed grooves on the fixed toothed ring 542 and the movable toothed ring 543 correspond to the positions of the toothed blocks, and the telescopic assembly 547 between them includes a middle telescopic rod and fixed blocks on both sides. The middle telescopic rod can extend and retract along the travel groove in the fixed block and is provided with a reset force by a built-in spring. A connecting pull wire is wound around the outside of the winding shaft 541. The limiting block 545 is engaged with the mounting groove 53, and the pull ring 546 at the top of the limiting block 545 protrudes.

[0044] The top end of the connecting wire wound around the outside of the winding spool 541 is connected to the mounting assembly 55. The mounting assembly 55 includes a mounting frame 551, a return spring 552, and a connecting slider 553. The mounting frame 551 is a rectangular structure with a hollow interior, and the shape of the hollow structure corresponds to the shape of the external cable connector. The connecting slider 553 is integrally mounted on the bottom of the mounting frame 551. A return spring 552 is provided on one outer wall of the connecting slider 553 and is connected to one inner wall of the reserved groove 52.

[0045] A magnetic block 554 is provided on the outer wall of the other side of the connecting slider 553, and it is magnetically attracted to the inner wall of the corresponding reserved groove 52.

[0046] Specifically, when the installation component 55 is separated from the power interface 4 by the trigger component 54, the operator needs to use the pull ring 546 to move the limit block 545 upward inside the installation groove 53. When the limit block 545 moves upward, the connecting post 544 will cause the movable toothed ring 543 to rise under the action of the telescopic component 547, thereby separating the movable toothed ring 543 from the fixed toothed ring 542. At this time, the pull ring 546 will drive the limit block 545, the connecting post 544, and the movable toothed ring 543 to rotate. With the design of the telescopic component 547, the fixed toothed ring 542 will rotate. When it rotates, it will drive the winding shaft 541 coaxially connected to its bottom to rotate. Rotation causes the connecting cable to wind up, further compressing the return spring 552. The connecting cable pulls the connecting slider 553, causing it to slide within the pre-drilled groove 52. The connecting slider 553 then moves the mounting frame 551. Once the mounting frame 551 reaches the desired position, the pull ring 546 lowers the limiting block 545, causing it to engage with the mounting groove 53. This fixes the angle of the fixed toothed ring 542 and the movable toothed ring 543 after rotation, thus limiting the position of the mounting frame 551. This achieves smooth disconnection and one-click separation, and also allows for the locking and securing of the connector.

[0047] When the connector is installed or needs to be reconnected, simply repeat the above steps to rotate the fixed toothed ring 542 and the movable toothed ring 543 in opposite directions, coordinating with the reset spring 552 to reset the connector. This will cause the connecting slider 553 to move back towards the power interface 4. Since the other side of the connecting slider 553 is still magnetically attracted to the inner wall of the reserved groove 52, the connecting slider 553 can be tightly fitted to the inner wall of the reserved groove 52, ensuring the stability of the connection.

[0048] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A power grid energy storage box structure, characterized in that, The system includes a cabinet shell (1), an inner frame (11) inside the cabinet shell (1), a battery module (6) and an electrical control and converter unit installed in the middle of the inner frame (11), a detachable cabinet door (2) on the outside of the cabinet shell (1), casters (3) on the bottom of the cabinet shell (1) to assist in moving the entire energy storage box, and a power interface (4) on one side of the top of the cabinet shell (1) for power connection. An auxiliary connection component (5) is provided on the outside to assist the power connector in installation and disassembly. The auxiliary connection component (5) includes a fixed base (51), a reserved slide groove (52), an installation groove (53), a trigger component (54), and an installation component (55). The top of the fixed base (51) is provided with a reserved slide groove (52) and an installation groove (53). The reserved slide groove (52) is used for the installation component (55) to move inside it. The installation groove (53) is provided with a lifting installation component (55) inside it.

2. The grid energy storage box structure as described in claim 1, characterized in that: The inner wall of the cabinet door (2) is evenly distributed with protruding ribs (21), and the top of the protruding ribs (21) is made of rubber.

3. The grid energy storage box structure as described in claim 1, characterized in that: The battery module (6) includes a battery pack (61), a connecting piece (62), a middle plate (63), and a buffer assembly (64). The battery packs (61) are arranged at equal intervals inside the inner frame (11), and every two battery packs (61) arranged vertically are set as a group. The two battery packs (61) are connected by the connecting piece (62), and a middle plate (63) is arranged in the middle of the two battery packs (61).

4. The grid energy storage box structure as described in claim 3, characterized in that: The connecting piece (62) is fixed to the middle plate (63) by fasteners, and buffer components (64) are symmetrically arranged on both sides of the connecting piece (62) for buffering. The position of the buffer components (64) corresponds to the position of the protruding rib (21).

5. The grid energy storage box structure as described in claim 4, characterized in that: The buffer assembly (64) includes a protruding post (641), a connecting rod (642), a movable plate (643), and a buffer spring (644). The top end of the protruding post (641) is connected to the connecting rod (642), and the movable plate (643) is detachably installed on the top end of the connecting rod (642). The movable plate (643) moves in the buffer cylinder inside the intermediate plate (63), and the top end of the movable plate (643) is provided with a buffer spring (644) connected to the inner wall of the buffer cylinder.

6. The grid energy storage box structure as described in claim 1, characterized in that: The electrical control and converter unit includes an energy storage converter and an energy management system. The energy storage converter is responsible for the bidirectional and efficient conversion of DC and AC power, while the energy management system is responsible for receiving grid commands, monitoring battery status, formulating charging and discharging strategies, and coordinating the safe operation of the entire system.

7. The grid energy storage box structure as described in claim 1, characterized in that: The triggering component (54) includes a winding shaft (541), a fixed toothed ring (542), a movable toothed ring (543), a connecting post (544), a limiting block (545), a pull ring (546), and a telescopic component (547). The winding shaft (541) is installed in the hollow groove at the bottom of the mounting groove (53), and the bottom of the winding shaft (541) is connected to the bottom bearing of the hollow groove. The top end of the winding shaft (541) is provided with a fixed toothed ring (542) coaxially connected to it. The top end of the fixed toothed ring (542) is provided with a movable toothed ring (543) connected through the telescopic component (547). The top end of the movable toothed ring (543) is connected to the limiting block (545) through the connecting post (544). The top end of the limiting block (545) is provided with a pull ring (546).

8. The grid energy storage box structure as described in claim 7, characterized in that: The tooth grooves on the fixed toothed ring (542) and the movable toothed ring (543) correspond to the positions of the toothed blocks, and the telescopic assembly (547) between them includes a middle telescopic rod and fixed blocks on both sides. The middle telescopic rod can extend and retract along the travel groove in the fixed block and is provided with a reset force by a built-in spring. The winding shaft (541) is wound with a connecting pull wire. The limiting block (545) is engaged with the mounting groove (53), and the pull ring (546) at the top of the limiting block (545) protrudes.

9. The grid energy storage box structure as described in claim 8, characterized in that: The top end of the connecting wire wound around the outside of the winding spool (541) is connected to the mounting assembly (55). The mounting assembly (55) includes a mounting frame (551), a return spring (552), and a connecting slider (553). The mounting frame (551) is a rectangular structure with a hollow interior. The shape of the hollow structure corresponds to the shape of the external cable connector. The bottom of the mounting frame (551) is integrally mounted with a connecting slider (553). A return spring (552) is provided on one side of the outer wall of the connecting slider (553) and is connected to one side of the inner wall of the reserved groove (52).

10. The grid energy storage box structure as described in claim 9, characterized in that: A magnetic block (554) is provided on the outer wall of the other side of the connecting slider (553), and it is magnetically attracted to the inner wall of its corresponding reserved groove (52).

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