Liquid cooling lower shell of energy storage battery pack

Abstract

The utility model discloses an energy storage battery pack liquid cooling lower shell, which comprises a liquid cooling lower shell liquid cooling plate, a module fixing beam, a bottom steel cross beam, a bottom steel longitudinal beam and a rectangular pipe, and the rectangular pipe is arranged between the liquid cooling lower shell liquid cooling plate and the bottom steel longitudinal beam and is used for enhancing the strength of the liquid cooling lower shell. The liquid cooling lower shell liquid cooling plate and the bottom steel longitudinal beam are connected and fixed through second rivet nuts, the bottom steel longitudinal beam, the rectangular pipe and the bottom steel cross beam are connected and fixed through rivets, and the side, away from the rectangular pipe, the bottom steel longitudinal beam and the bottom steel cross beam, of the liquid cooling lower shell liquid cooling plate is connected with the module fixing beam through first rivet nuts. The length of the bottom steel cross beams is smaller than that of the bottom steel longitudinal beams. By arranging the liquid cooling plate, the module fixing beams, the bottom steel cross beams, the bottom steel longitudinal beams and the rectangular pipes of the liquid cooling lower shell, the cost of the liquid cooling lower shell is reduced while the structural strength is ensured, and the weight of the lower shell is balanced at the same time.

Description

Technical Field

[0001] The utility model relates to a liquid-cooled lower shell of an energy storage battery pack and belongs to the technical field of energy storage battery packs. Background Art

[0002] Energy storage refers to the process of storing energy through a medium or device and releasing it when needed. Energy storage is also a term in oil reservoirs, representing the ability of reservoirs to store oil and gas. The research and development of new energy and renewable energy, and the search for advanced methods to improve energy utilization, have become the primary issue of common concern to the world. For a large energy producer and consumer like China, there is a need for both energy conservation and emission reduction, as well as energy growth to support economic development, which requires the vigorous development of the energy storage industry. Energy storage itself is not an emerging technology, but from an industrial perspective it has just emerged and is in its infancy. China has not reached the level of treating energy storage as an independent industry and issuing special support policies like the United States and Japan, especially in the absence of a payment mechanism for energy storage, the commercial model of the energy storage industry has not yet taken shape. The growing energy consumption, especially the impact of the large-scale use of fossil fuels such as coal and oil on the environment and global climate has posed a serious threat to the goal of sustainable development for mankind.

[0003] At present, the energy storage industry is developing rapidly. In energy storage packs, liquid cooling plates have become the mainstream as the load-bearing lower shell, with various reinforcement structures, mainly profile flow channel and frame structure, bottom aluminum profile plus aluminum reinforcement rib structure, and surrounding roll-pressed steel frame with aluminum reinforcement rib structure. However, these structures have some problems: first, high cost; second, heavier, and higher load-bearing requirements for the entire energy storage cabinet. Utility Model Content

[0004] The purpose of the utility model is to address the above-mentioned problems existing in the prior art, overcome the shortcomings of the prior art, and design a liquid-cooled lower shell for an energy storage battery pack that reduces the cost of the liquid-cooled lower shell and can balance the weight of the lower shell.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] A liquid-cooled lower shell of an energy storage battery pack comprises a liquid-cooled lower shell liquid-cooled plate, a module fixing beam, a bottom steel crossbeam, a bottom steel longitudinal beam and a rectangular tube, wherein the rectangular tube is arranged between the liquid-cooled lower shell liquid-cooled plate and the bottom steel longitudinal beam to strengthen the strength of the liquid-cooled lower shell, the liquid-cooled lower shell liquid-cooled plate and the bottom steel longitudinal beam are connected and fixed by a second rivet nut, the bottom steel longitudinal beam, the rectangular tube and the bottom steel crossbeam are connected and fixed by rivets, and a side of the liquid-cooled lower shell liquid-cooled plate away from the rectangular tube, the bottom steel longitudinal beam and the bottom steel crossbeam is connected to the module fixing beam by a first rivet nut, and the length of the bottom steel crossbeam is less than the length of the bottom steel longitudinal beam.

[0007] Preferably, the liquid cooling plate of the liquid-cooled lower shell includes an energy storage battery pack flat plate, an energy storage battery pack flow plate and a water joint, the energy storage battery pack flow plate and the water joint are both installed on the energy storage battery pack flat plate, and the energy storage battery pack flow plate and the water joint are interconnected.

[0008] Preferably, one side of the bottom steel longitudinal beam is provided with a concave-convex surface structure, one side of the concave surface is fitted with the rectangular tube, and the other side is fitted with the bottom steel cross beam, and a plurality of assembly holes for assembly are provided on the concave surface.

[0009] Preferably, the bottom steel cross beam is provided with a wavy concave-convex surface to increase the contact and support area.

[0010] Preferably, a basin-shaped concave structure is provided on the bottom steel beam to enhance the strength of the beam.

[0011] Preferably, the bottom steel cross beam is provided with a mounting hole in the basin-shaped concave surface, and one side of the basin-shaped concave surface is fitted with one side of the concave surface of the bottom steel longitudinal beam.

[0012] Preferably, the bottom steel crossbeam mounting hole, the bottom steel longitudinal beam assembly hole and the rectangular tube rivet hole are coaxial, and the mounting hole, the assembly hole and the rivet hole are used for assembly and fixation by riveting or welding.

[0013] Beneficial effects achieved by the utility model:

[0014] 1. The utility model reduces the cost of the liquid-cooled lower shell while ensuring the structural strength and balancing the weight of the lower shell by arranging a liquid-cooled lower shell liquid cooling plate, a module fixing beam, a bottom steel cross beam, a bottom steel longitudinal beam and a rectangular tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the utility model is given;

[0016] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of the liquid cooling plate of the liquid cooling lower shell shown;

[0017] Figure 3for Figure 2 A schematic diagram of the enlarged structure at point A;

[0018] Figure 4 for Figure 1 The front view structural schematic diagram shown;

[0019] Figure 5 for Figure 1 The front view structural schematic diagram of the liquid cooling plate of the liquid cooling lower shell is shown.

[0020] Figure numerals: 10, liquid cooling lower shell liquid cooling plate; 11, energy storage battery pack flat plate; 12, energy storage battery pack flow channel plate; 13, water joint; 20, module fixing beam; 30, bottom steel cross beam; 40, bottom steel longitudinal beam; 50, rectangular tube; 70, second rivet nut. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0022] Example 1

[0023] like Figure 1-5As shown, the utility model proposes a liquid-cooled lower shell of an energy storage battery pack, including a liquid-cooled lower shell liquid-cooled plate 10, a module fixing beam 20, a bottom steel crossbeam 30, a bottom steel longitudinal beam 40 and a rectangular tube 50. The rectangular tube 50 is arranged between the liquid-cooled lower shell liquid-cooled plate 10 and the bottom steel longitudinal beam 40 to strengthen the strength of the liquid-cooled lower shell. The liquid-cooled lower shell liquid-cooled plate 10 and the bottom steel longitudinal beam 40 are connected and fixed by a second rivet nut 70. The bottom steel longitudinal beam 40, the rectangular tube 50 and the bottom steel crossbeam 30 are connected and fixed by rivets. The side of the liquid-cooled lower shell liquid-cooled plate 10 away from the rectangular tube 50, the bottom steel longitudinal beam 40 and the bottom steel crossbeam 30 is connected to the module fixing beam 20 by a first rivet nut. The liquid-cooled lower shell liquid-cooled plate 10 includes an energy storage battery pack flat plate 11, an energy storage battery pack flow channel plate 12 and a water joint 13. The energy storage battery pack flow channel plate 12 and the water joint 13 are all installed on the energy storage battery pack flat plate 11, and the energy storage battery pack flow channel plate 12 is interconnected with the water joint 13, the length of the bottom steel cross beam 30 is less than the length of the bottom steel longitudinal beam 40, and one side of the bottom steel longitudinal beam 40 is provided with a concave-convex surface structure, one side of the concave surface is in contact with the rectangular tube 50, and the other side is in contact with the bottom steel cross beam 30, and a plurality of assembly holes for assembly are arranged on the concave surface, and the bottom steel cross beam 30 is provided with a wavy concave-convex surface for increasing the contact and support area, and the bottom steel cross beam 30 is provided with a basin-shaped concave structure for strengthening the cross beam strength, and the bottom steel cross beam 30 is provided with a mounting hole in the basin-shaped concave surface, and one side of the basin-shaped concave surface is in contact with one side of the concave surface of the bottom steel longitudinal beam 40, and the mounting hole of the bottom steel cross beam 30, the assembly hole of the bottom steel longitudinal beam 40 and the rivet hole of the rectangular tube 50 are coaxial, and the mounting hole, the assembly hole and the rivet hole are used for assembly and fixation by riveting or welding.

[0024] In this embodiment, the bottom steel cross beam 30 and the bottom steel longitudinal beam 40 are both formed by stamping high-strength steel plates; the rectangular tube 50 is arranged inside the bottom steel longitudinal beam 40 to strengthen the structural strength; the bottom steel cross beam 30 and the bottom steel longitudinal beam 40 are both fixed to the rectangular tube; the bottom steel longitudinal beam 40 has a concave and convex surface, and the bottom steel cross beam 30 is placed on the concave surface. After the bottom steel cross beam 30 is assembled, the highest surface and the convex surface of the bottom steel longitudinal beam 40 are at the same horizontal plane;

[0025] The top of the bottom steel longitudinal beam 40 is provided with a concave-convex surface structure, the upper side of the concave surface is fitted with the rectangular tube 50, and the bottom end is assembled with the bottom steel cross beam 30. The concave surface is provided with a plurality of holes for assembly. At the same time, after the bottom steel cross beam 30 is assembled, the bottommost surface and the convex surface of the bottom steel longitudinal beam 40 are at the same horizontal plane, such as Figure 3 and Figure 4 The bottom steel beam 30 is provided with a wave-like concave and convex surface to increase the contact and support area and enhance the structural strength. Figure 4As shown. The bottom steel beam 30 is provided with a basin-shaped concave structure for strengthening the bottom steel beam 30. A mounting hole is provided in the concave surface, the top of the concave surface is fitted with the bottom of the concave surface of the bottom steel longitudinal beam 40, and the holes of the bottom steel beam 30, the bottom steel longitudinal beam 40 and the rectangular tube 50 are coaxial for assembly and fixation by riveting or welding.

[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A liquid-cooled lower shell of an energy storage battery pack, comprising a liquid-cooled lower shell liquid cooling plate (10), a module fixing beam (20), a bottom steel cross beam (30), a bottom steel longitudinal beam (40) and a rectangular tube (50), characterized in that: The rectangular tube (50) is arranged between the liquid cooling lower shell liquid cooling plate (10) and the bottom steel longitudinal beam (40) to strengthen the strength of the liquid cooling lower shell; the liquid cooling lower shell liquid cooling plate (10) and the bottom steel longitudinal beam (40) are connected and fixed by a second rivet nut (70); the bottom steel longitudinal beam (40), the rectangular tube (50) and the bottom steel cross beam (30) are connected and fixed by rivets; and a side of the liquid cooling lower shell liquid cooling plate (10) away from the rectangular tube (50), the bottom steel longitudinal beam (40) and the bottom steel cross beam (30) is connected to the module fixing beam (20) by a first rivet nut; the length of the bottom steel cross beam (30) is less than the length of the bottom steel longitudinal beam (40).

2. The liquid-cooled lower shell of an energy storage battery pack according to claim 1, characterized in that: The liquid-cooled lower housing liquid cooling plate (10) comprises an energy storage battery pack flat plate (11), an energy storage battery pack flow channel plate (12) and a water connector (13); the energy storage battery pack flow channel plate (12) and the water connector (13) are both mounted on the energy storage battery pack flat plate (11), and the energy storage battery pack flow channel plate (12) and the water connector (13) are interconnected.

3. The liquid-cooled lower shell of an energy storage battery pack according to claim 1, characterized in that: One side of the bottom steel longitudinal beam (40) is provided with a concave-convex surface structure, one side of the concave surface is fitted with the rectangular tube (50), and the other side is fitted with the bottom steel cross beam (30), and a plurality of assembly holes for assembly are provided on the concave surface.

4. The liquid-cooled lower shell of an energy storage battery pack according to claim 1, characterized in that: The bottom steel cross beam (30) is provided with a wavy concave and convex surface for increasing the contact and support area.

5. The liquid-cooled lower shell of an energy storage battery pack according to claim 3, characterized in that: The bottom steel cross beam (30) is provided with a basin-shaped concave structure for enhancing the strength of the cross beam.

6. The liquid-cooled lower shell of an energy storage battery pack according to claim 5, characterized in that: The bottom steel cross beam (30) is provided with a mounting hole in the basin-shaped concave surface, and one side of the basin-shaped concave surface is in contact with one side of the concave surface of the bottom steel longitudinal beam (40).

7. The liquid-cooled lower shell of an energy storage battery pack according to claim 6, characterized in that: The mounting hole of the bottom steel cross beam (30), the assembly hole of the bottom steel longitudinal beam (40) and the rivet hole of the rectangular tube (50) are coaxial, and the mounting hole, the assembly hole and the rivet hole are used for assembly and fixing by riveting or welding.

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