Marine battery container bottom structure

Abstract

The utility model discloses a marine battery container bottom structure, including by the main girder and corner piece's main bearing assembly, by the secondary bearing assembly of auxiliary beam and bottom plate, still include the expansion bearing assembly, contain the first connecting plate of main girder side surface vertical fixed, the second connecting plate of bottom plate bottom vertical fixed, the expansion beam for expansion bearing swing joint between first connecting plate and second connecting plate and the fastening assembly of the through connection of three, the utility model discloses a detachable expansion bearing assembly, and the first connecting plate of pre -welding in the main girder side surface is combined with the second connecting plate of bottom plate bottom, forms the modularization structure of expansion beam assembly on demand, realizes the dynamic reconstruction of marine battery container bearing system, improves the construction efficiency of battery rack expansion, and the box structure damage and longer reconstruction cycle problem caused by cutting and welding of existing device are solved, and the operation safety and economy of marine battery system are improved significantly.

Description

Technical Field

[0001] This utility model relates to containers, and more particularly to a bottom structure for a marine battery container. Background Technology

[0002] In the process of ship electrification, marine battery containers, as carriers of high-energy-density energy storage systems, need to simultaneously bear the static load of ultra-heavy battery packs and resist multi-directional dynamic loads caused by wave impacts in the environment of ocean voyages, while also possessing the flexible layout capability to adapt to different specifications of battery racks. Currently, the commonly used bottom structure of marine containers is mainly composed of a welded basic frame of homogeneous steel plates, reinforced by fixed reinforcing beams or local damping components. This traditional structure has gradually revealed fundamental defects under the special working conditions of ships over a long period of time: the homogeneous steel plate bottom plate is prone to plastic deformation under the superposition of lifting impacts and alternating wave loads, resulting in inaccurate flatness of the bottom plate; although the rigid grid formed by the fixed reinforcing beams improves local stiffness, it cannot respond to the dynamic adjustment requirements of the battery rack layout. When marine battery containers undergo secondary equipment modification or battery rack expansion, installation conflicts often occur due to the fixed position of the bottom load-bearing beams; traditional solutions require cutting the original beams and re-welding, which not only damages the structural strength but also has a long construction period. These structural defects lead to technical failures: the non-adjustable nature of the frame limits the expansion of battery capacity, resulting in a reduction in the ship's range and seriously threatening the continuity of the ship's navigation and the reliability of the power system. Utility Model Content

[0003] Purpose of the utility model: The purpose of this utility model is to provide a modular and dynamically adjustable bottom structure for marine battery containers.

[0004] Technical solution: The bottom structure of a marine battery container of this utility model includes a main load-bearing component composed of a main beam and corner pieces, a secondary load-bearing component composed of an auxiliary beam and a bottom plate, and an extension load-bearing component, including a first connecting plate vertically fixed to the side of the main beam, a second connecting plate vertically fixed to the bottom of the bottom plate, an extension beam for extending load-bearing movably connected between the first connecting plate and the second connecting plate, and a fastening component that runs through and connects the three components.

[0005] Preferably, the surfaces of the first connecting plate and the second connecting plate are parallel to each other, and there are two or more sets of them, with the spacing between them adapted to the end size of the extension beam; the fastening assembly is a combination structure of high-strength bolts and anti-loosening nuts, and corresponding through holes are opened on the first connecting plate, the second connecting plate and the extension beam, and the high-strength bolts pass through the corresponding through holes between the three and lock them.

[0006] Preferably, the base plate is a high-strength steel plate, and a fire-resistant lining layer is laid on the upper surface of the base plate, wherein the fire-resistant lining layer and the base plate form an integrated composite structure.

[0007] Preferably, the bottom of the main load-bearing component is provided with a shock-absorbing pad, and the coverage area of ​​the shock-absorbing pad extends beyond the bottom contour of the main load-bearing component.

[0008] Preferably, the main beam, corner pieces, and auxiliary beams are connected by full welding, while the base plate and auxiliary beams are connected by intermittent welding.

[0009] Preferably, the number and position of the auxiliary beams are configured according to the load distribution of the battery rack.

[0010] Preferably, the main load-bearing component further includes anti-torsion columns that are fully welded to the main beam and corner pieces to form a closed anti-torsion structure.

[0011] Beneficial effects: Compared with the prior art, the present invention has the following advantages: The present invention forms a modular structure for assembling extension beams on demand by combining a detachable extension load-bearing component with a first connecting plate pre-welded to the side of the main beam and a second connecting plate at the bottom of the bottom plate. This realizes the dynamic reconfiguration of the marine battery container load-bearing system, which not only improves the construction efficiency of battery rack expansion, but also solves the problems of damage to the box structure and long modification cycle caused by cutting and welding in existing devices. This significantly improves the operation and maintenance safety and economy of the ship battery system. Attached Figure Description

[0012] Figure 1 This is a schematic cross-sectional view of the bottom structure of the marine battery container of this utility model.

[0013] Figure 2 This is a schematic diagram of the main load-bearing component and auxiliary beam structure of this utility model.

[0014] Figure 3 This is a schematic diagram of the main load-bearing component and the secondary load-bearing component of this utility model.

[0015] Figure 4 This is a schematic diagram of the overall structure of the marine battery container of this utility model.

[0016] Figure 5 This is a schematic diagram of the overall structure of the marine battery container of this utility model. Detailed Implementation

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0018] like Figure 1-5As shown, the bottom structure of a marine battery container mainly consists of three parts: a main load-bearing component, a secondary load-bearing component, and an extended load-bearing component. The main load-bearing component includes two sets of parallel main beams 1 and corner pieces 2 welded to their four corners, forming a U-shaped foundation support frame. The secondary load-bearing component consists of multiple transversely arranged auxiliary beams 3 and a high-strength steel plate base plate 4 laid on top of them. The main beams 1 are made of large-size I-beams or square tubing, fully welded to the corner pieces 2 to ensure overall rigidity. The two ends of the auxiliary beams 3 are welded to the two opposite main beams 1 of the main load-bearing component, and the joints between the auxiliary beams 3 and the main beams 1 are fully welded to form a load-sharing network. The number and position of the auxiliary beams 3 are adjusted according to the battery racks and equipment anchoring points inside the container. A homogeneous steel plate base plate 4 is laid on top of the auxiliary beams 3, with intermittent welding at the contact points with the auxiliary beams 3 to avoid stress concentration and deformation.

[0019] The core value of the extended load-bearing components lies in solving the pain points of retrofitting: At the initial stage of construction, a first connecting plate 5 is vertically welded to the side of the main beam 1, and a second connecting plate 6 is vertically welded to the bottom of the base plate 4, ensuring the surfaces of the two connecting plates are parallel to each other, in preparation for subsequent load-bearing expansion. The first connecting plate 5 and the second connecting plate 6 are initially welded together evenly onto the main and secondary load-bearing components. When the load on the bottom structure increases and additional load-bearing structures are needed, the two ends of the extended beam 7 are inserted into the gap between the first connecting plate 5 and the second connecting plate 6. All three are then locked together using high-strength bolts with through holes and anti-loosening nuts, forming a new load-bearing node. When the battery rack layout is adjusted, only the number of extended beams 7 needs to be increased or decreased, and the bolts retightened, to reconstruct the load-bearing path. This design ensures that the enclosure has no redundant weight in the initial stage and avoids strength damage caused by thermal cutting during retrofitting, improving construction efficiency.

[0020] To enhance fire resistance, a fire-resistant lining layer 8 is laid on the upper surface of the steel base plate 4. After curing, this refractory lining layer 8 forms a compressive-resistant composite structure with the base plate 4, effectively isolating the risk of battery thermal runaway. Vibration damping pads 9 are installed at the bottom of the main load-bearing components, with their coverage extending beyond the bottom contours of the main beam 1 and corner fittings 2. This ensures that the vibration damping pads 9 preferentially contact the ship's deck during container hoisting to block vibration transmission; simultaneously, the design of the vibration damping pads 9 ensures that the container is minimally affected by ship swaying. Furthermore, the main beam 1 is fully welded to the corner fittings 2 and auxiliary beams 3, and anti-torsion columns 10 are welded at key locations to form a closed anti-torsion structure, enhancing the overall anti-overturning capability.

[0021] The working principle of the entire device is as follows: the load of the battery rack is transferred to the auxiliary beam 3 and the main beam 1 through the base plate 4, and finally distributed to the container frame by the corner piece 2; when adding a new battery rack, the extension beam 7 is inserted between the first connecting plate 5 and the second connecting plate 6 at the corresponding position, and after the bolts are tightened, an additional load-bearing support point is formed; the fire-resistant lining layer 8 and the base plate 4 jointly resist the high temperature impact of the battery, and the shock-absorbing pad 9 absorbs the low frequency vibration during the ship's operation; the fully welded anti-torsion column 10 suppresses the torsional deformation of the container in wind and waves.

[0022] When modifying or expanding the battery rack of a marine battery container, installation conflicts often arise due to the fixed position of the bottom load-bearing beam. Traditional solutions require cutting the original auxiliary beam 3 and re-welding it, which not only compromises structural strength but also results in a long construction period. This structure completely solves this problem with a detachable expansion load-bearing component: when there is no need for expansion in the early stages, only the first connecting plate 5 welded to the side of the main beam 1 and the second connecting plate 6 at the bottom of the bottom plate 4 are retained, avoiding the redundant weight of the expansion beam 7 from increasing the load on the container; when additional load-bearing points are needed later, the expansion beam 7 is directly inserted between the first connecting plate 5 and the second connecting plate 6, and high-strength bolts are used to lock them through the through holes of the three, allowing for single-point expansion in a short time without the need for cutting, welding, or removing the bottom plate 4.

Claims

1. A bottom structure for a marine battery container, comprising a main load-bearing assembly consisting of a main beam (1) and corner pieces (2), and a secondary load-bearing assembly consisting of an auxiliary beam (3) and a bottom plate (4), characterized in that: It also includes an extended load-bearing component, comprising a first connecting plate (5) vertically fixed to the side of the main beam (1), a second connecting plate (6) vertically fixed to the bottom of the base plate (4), an extended beam (7) for extended load-bearing that is movably connected between the first connecting plate (5) and the second connecting plate (6), and a fastening component that connects the three components.

2. The bottom structure according to claim 1, characterized in that: The first connecting plate (5) and the second connecting plate (6) are parallel to each other, and there are two or more sets of them. The spacing between them is adapted to the end size of the extension beam (7). The fastening assembly is a combination structure of high-strength bolts and anti-loosening nuts. Corresponding through holes are opened on the first connecting plate (5), the second connecting plate (6) and the extension beam (7). The high-strength bolts pass through the corresponding through holes between the three and lock them.

3. The bottom structure according to claim 1, characterized in that: The base plate (4) is a high-strength steel plate, and a fire-resistant lining layer (8) is laid on the upper surface of the base plate (4). The fire-resistant lining layer (8) and the base plate (4) form an integrated composite structure.

4. The bottom structure according to claim 1, characterized in that: The bottom of the main load-bearing component is provided with a shock-absorbing pad (9), and the coverage area of ​​the shock-absorbing pad (9) extends beyond the bottom contour of the main load-bearing component.

5. The bottom structure according to claim 1, characterized in that: The main beam (1), corner piece (2), and auxiliary beam (3) are connected by full welding, while the base plate (4) and auxiliary beam (3) are connected by intermittent welding.

6. The bottom structure according to claim 1, characterized in that: The number and position of the auxiliary beams (3) are configured according to the load distribution of the battery rack.

7. The bottom structure according to claim 1, characterized in that: The main load-bearing component also includes anti-torsion columns (10) that are fully welded to the main beam (1) and corner pieces (2) to form a closed anti-torsion structure.

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