High-strength sealing metal plate welding structure battery box body of new energy storage system

Abstract

The invention discloses a high-strength sealing metal plate welding structure battery box of a new energy storage system, and relates to the technical field of energy storage equipment, the high-strength sealing metal plate welding structure battery box comprises a battery box main body, four side edges of the battery box main body are semi-enclosed tubular structures, and the tubular structures and the battery box main body are integrally formed; an inward concave boss is arranged at the bottom of the battery box main body, the boss and the battery box main body are integrally formed, an electrical mounting plate is fixed on the inner wall of the front side of the battery box main body, a front module rib plate and a rear module rib plate are fixed in the battery box main body, and the boss is positioned between the front module rib plate and the rear module rib plate. According to the battery box body, the tubular structure is arranged, so that the battery box body has relatively high torsion resistance and bending resistance, and the tubular structure and the battery box body are integrally formed, so that the battery box body has relatively good sealing performance, the internal space of the battery box body can be more effectively utilized, and the grouping efficiency and the mass specific energy of the battery box body are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage devices, and particularly to a high-strength sealed sheet metal welded structure battery box body for a new energy energy storage system. Background Art

[0002] With the development of new energy electric vehicles and the energy storage industry, the safety of new energy battery systems has attracted much attention. The battery box body with a sheet metal bending and welding structure occupies a large market share in the market due to its good cost performance. However, most of the current sheet metal box body structures on the market are designed with complex groups, and the box body structure is bulky, which not only affects the energy density of the battery system but also results in relatively high manufacturing costs. At the same time, there are also battery box bodies with relatively simple structures. For example, the patent document with the publication number CN221226473U discloses a battery box body, including a side plate, which is provided with an inwardly concave chute for sliding cooperation with a slide rail. The side wall of the side plate for enclosing the chute is provided with a lifting hole for the hook to pass through so that the side plate can be connected to the hook. Although the above battery box body has a relatively simple structure, the overall structural strength of the box body is not high. Therefore, it is necessary to develop a high-strength and lightweight battery box sheet metal structure design solution to solve the deficiencies of the prior art. Summary of the Invention

[0003] The purpose of the present invention is to provide a high-strength sealed sheet metal welded structure battery box body for a new energy energy storage system to solve the above problems.

[0004] The present invention achieves the above purpose through the following technical solutions:

[0005] A high-strength sealed sheet metal welded structure battery box body for a new energy energy storage system includes a battery box body main body. The four sides of the battery box body main body are semi-enclosed tubular structures, which are integrally formed with the battery box body main body. The bottom of the battery box body main body is provided with an inwardly concave boss, which is integrally formed with the battery box body main body. An electrical installation plate is fixed on the inner wall of the front side of the battery box body main body. A front module rib plate and a rear module rib plate are fixed inside the battery box body main body. The boss is located between the front module rib plate and the rear module rib plate. The electrical installation plate is located in front of the front module rib plate. A front limiting rib plate is fixed between the electrical installation plate and the rear module rib plate. A welding nut is fixed on the front side of the battery box body main body. A box body axle pin is fixed on the rear side of the battery box body main body. The front end and the rear end of the bottom of the battery box body main body are respectively fixed with a third rib plate and a first rib plate. The two side ends of the bottom of the battery box body main body are fixed with a second rib plate. The third rib plate, the first rib plate and the second rib plate are all fixedly connected to the tubular structure.

[0006] Preferably, inner reinforcing rib plates are fixed on all four inner side walls of the battery box body. One end of the inner reinforcing rib plate is fixedly connected to the tubular structure, and the other end is fixedly connected to the inner bottom surface of the battery box body.

[0007] Preferably, a sealing gasket is fixed around the top of the battery box body, and connection holes are provided on both the top of the battery box body and the sealing gasket.

[0008] Preferably, a plurality of equally spaced reinforcing ribs are fixed to the bottom of the battery box body, and the reinforcing ribs are located between two bosses.

[0009] Preferably, the reinforcing rib is in a π shape.

[0010] Preferably, nut assemblies are provided on both sides at the front end of the bottom of the battery box body.

[0011] The beneficial effects are as follows: Tubular structures are provided around the battery box body, making the battery box body itself have high torsional and bending resistance characteristics. Since the tubular structure is integrally formed with the battery box body, it has good sealing performance and can also make more effective use of the internal space of the battery box body, greatly improving the battery box's grouping efficiency and mass specific energy. At the same time, the processing technology is optimized, reducing the processing cost of the battery box; by providing welding nuts and box body axles on the front and rear sides of the battery box body, the battery box has extremely high structural stability and strength during use.

[0012] The additional technical features and their advantages of the present invention will be more clearly described in the following description content, or can be understood through the specific practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the drawings:

[0014] Figure 1 is a top view structure diagram of a high-strength sealed sheet metal welded structure battery box of a new energy energy storage system according to the present invention;

[0015] Figure 2 is a bottom view structure diagram of a high-strength sealed sheet metal welded structure battery box of a new energy energy storage system according to the present invention;

[0016] Figure 3 is a right side cross-sectional view of a high-strength sealed sheet metal welded structure battery box of a new energy energy storage system according to the present invention;

[0017] Figure 4 is a left side cross-sectional view of a high-strength sealed sheet metal welded structure battery box of a new energy energy storage system according to the present invention;

[0018] Figure 5 It is the Figure 3 enlarged view at position E in the high-strength sealed sheet metal welded structure battery box of a new energy energy storage system described in the present invention.

[0019] The description of the reference numerals is as follows: 1. Battery box body; 2. Connecting hole; 3. Electrical installation board; 4. Front limit rib plate; 5. Front module rib plate; 6. Inner side strengthening rib plate; 7. Rear module rib plate; 8. Sealing gasket; 9. Box body pivot pin; 10. First rib plate; 11. Second rib plate; 12. Strengthening rib; 13. Nut assembly; 14. Third rib plate; 15. Boss; 16. Welding nut. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0022] The present invention will be further described below in conjunction with the accompanying drawings:

[0023] As Figures 1-5 shown, a high-strength sealed sheet metal welded structure battery box of a new energy energy storage system includes a battery box body 1. The four sides of the battery box body 1 are semi-enclosed tubular structures. By setting the tubular structures, the torsional and bending resistance characteristics of the battery box body 1 can be greatly improved, ensuring the strength of the battery box body 1. The tubular structures are integrally formed with the battery box body 1. When processing the tubular structures, the cold-rolled steel sheet parts completed by stamping and unfolding are bent. First, each of the four sides of the sheet parts is bent upward for the first time, and the bending points are Figure 5At point A in it, then bend the second cut outwards from each of the four sides, with the bending point being point B. Then bend the third cut downwards from each of the four sides, with the bending point being point C. Finally, bend the fourth cut inwards from each of the four sides, with the bending point being point D, thereby forming a semi - enclosed tubular structure. Then, the seam is welded through the CO2 shielded arc welding process to form an integral whole. A convex platform 15 that is recessed inward is provided at the bottom of the battery box body 1. The convex platform 15 is integrally formed with the battery box body 1 and is processed by the die stamping and stretching process. Through the above design, the sealed part of the battery box body 1 is set on the outside, thereby ensuring the efficient utilization of the inner space of the battery box body 1 and improving the sealing performance. A welding nut 16 is fixed on the front side of the battery box body 1, and a box body pin 9 is fixed on the rear side of the battery box body 1, ensuring extremely high structural stability and strength during the installation and use of the battery box body 1.

[0024] An electrical installation plate 3 is welded on the inner wall of the front side of the battery box body 1. The electrical installation plate 3 is used to install electrical equipment that matches the battery. Front module ribs 5 and rear module ribs 7 are welded inside the battery box body 1. The battery module is fixedly installed between the front module ribs 5 and the rear module ribs 7. The convex platform 15 is located between the front module ribs 5 and the rear module ribs 7. The electrical installation plate 3 is located on the front side of the front module ribs 5. A front limit rib 4 is welded between the electrical installation plate 3 and the rear module ribs 7. The front end and the rear end of the bottom of the battery box body 1 are respectively welded with a third rib 14 and a first rib 10. The two side ends of the bottom of the battery box body 1 are welded with a second rib 11. The third rib 14, the first rib 10, and the second rib 11 are all welded to the tubular structure. The semi - enclosed tubular structure is enclosed by the first rib 10, the second rib 11, and the reinforcing rib 12, and the strength of the battery box body 1 is improved.

[0025] Inner reinforcing rib plates 6 are fixed on the four inner side walls of the battery box body 1. One end of the inner reinforcing rib plate 6 is fixedly connected to the tubular structure, and the other end of the inner reinforcing rib plate 6 is fixedly connected to the inner bottom surface of the battery box body 1, improving the support strength inside the battery box body 1.

[0026] A sealing gasket 8 is fixed around the top of the battery box body 1. The sealing gasket 8 is a microporous foamed silicone rubber. Connecting holes 2 are provided on both the top of the battery box body 1 and the sealing gasket 8. A plurality of equally - spaced reinforcing ribs 12 are fixed at the bottom of the battery box body 1. The reinforcing ribs 12 are located between the two convex platforms 15. The bottom surface support strength of the battery box body 1 is improved by using the reinforcing ribs 12 and the convex platforms 15. The reinforcing ribs 12 are in a π shape, which can reduce the weight while ensuring the support strength. Nut assemblies 13 are provided on both sides of the front end of the bottom of the battery box body 1.

[0027] Install the electrical installation plate 3, front limit rib plate 4, front module rib plate 5, inner reinforcement rib plate 6, rear module rib plate 7, box body axle pin 9, nut assembly 13, and welding nut 16 in sequence, complete the rough welding and grinding of the battery box body main body 1, and then transfer to the next process for surface treatment. After the surface treatment is completed, rivet and process M5 raised rivet nuts on the flange surface of the battery box body main body 1, and paste the gasket 8 made of microporous foamed silicone rubber, and then carry out the IP68 airtight test process of the battery box body main body 1. After the test passes, the processing of the battery box body is completed.

[0028] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A high-strength sealed sheet metal welded structure battery box for a new energy energy storage system, characterized in that: It includes a battery box body (1). Four side edges of the battery box body (1) are semi-enclosed tubular structures, and the tubular structures are integrally formed with the battery box body (1). A convex platform (15) that is recessed inward is provided at the bottom of the battery box body (1), and the convex platform (15) is integrally formed with the battery box body (1). An electrical installation plate (3) is fixed on the inner wall of the front side of the battery box body (1). A front module rib plate (5) and a rear module rib plate (7) are fixed inside the battery box body (1). The convex platform (15) is located between the front module rib plate (5) and the rear module rib plate (7). The electrical installation plate (3) is located on the front side of the front module rib plate (5). A front limiting rib plate (4) is fixed between the electrical installation plate (3) and the rear module rib plate (7). A welding nut (16) is fixed on the front side of the battery box body (1). A box body axle pin (9) is fixed on the rear side of the battery box body (1). A third rib plate (14) and a first rib plate (10) are respectively fixed at the front end and the rear end of the bottom of the battery box body (1). Second rib plates (11) are fixed at both side ends of the bottom of the battery box body (1). The third rib plate (14), the first rib plate (10), and the second rib plate (11) are all fixedly connected to the tubular structure.

2. The high-strength sealed sheet metal welded structure battery box of a new energy energy storage system according to claim 1, wherein: Inner reinforcing rib plates (6) are fixed on the four inner side walls of the battery box body (1). One end of the inner reinforcing rib plate (6) is fixedly connected to the tubular structure, and the other end of the inner reinforcing rib plate (6) is fixedly connected to the inner bottom surface of the battery box body (1).

3. The high-strength sealed sheet metal welded structure battery box of a new energy energy storage system according to claim 1, characterized in that: A sealing gasket (8) is fixed around the top of the battery box body (1). Connecting holes (2) are provided on both the top of the battery box body (1) and the sealing gasket (8).

4. The high-strength sealed sheet metal welded structure battery box of a new energy energy storage system according to claim 1, characterized in that: A plurality of equally spaced reinforcing ribs (12) are fixed at the bottom of the battery box body (1), and the reinforcing ribs (12) are located between the two convex platforms (15).

5. The high-strength sealed sheet metal welded structure battery box of a new energy energy storage system according to claim 4, wherein: The reinforcing ribs (12) are in a π shape.

6. The high-strength sealed sheet metal welded structure battery box of a new energy energy storage system according to claim 1, wherein: Nut assemblies (13) are provided on both sides of the front end of the bottom of the battery box body (1).

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