Battery pack with four-sided contoured roll-pressed beams

Abstract

The utility model discloses a kind of battery packs with four peripheral abnormal roll pressing beam, it is related to new energy automobile battery technical field;It includes lower shell, back type roll pressing beam and inner to, the back type roll pressing beam is located in the lower shell inner side four quarters, and the inner to is located in the back type roll pressing beam inner side.Compared with prior art, the utility model is by lower shell, back type roll pressing beam and inner to jointly constitute three layer support structure, to replace the two layer structure in prior art, promote the scratch bottom intensity and side crash intensity of battery pack, the synergistic effect of three layer structure, not only improve the protection ability of single direction, also enhance the structural stability of battery pack whole, reduce the internal component displacement due to vibration, impact.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle battery technology, and in particular to a battery pack with irregularly shaped rollers on all four sides. Background Technology

[0002] As new energy vehicles rapidly enter consumers' homes, people's demands for their safety are increasing. In actual use, new energy vehicle battery packs are prone to safety accidents such as fires and leaks when the chassis scrapes against obstacles such as stones. Therefore, improving the scrape safety performance of battery packs has become a key focus of the industry.

[0003] Existing battery pack structures such as Figure 1 As shown, the battery pack includes a lower housing 101 and an inner support 102 located inside the lower housing 101. In the event of a scrape, the bottom edge of the battery pack becomes the weakest area, which is easily damaged by the scrape. At the same time, the side impact strength of the two-layer structure is insufficient, and it cannot effectively resist the impact force brought by the side collision, which further aggravates the safety hazards of the battery pack. It is difficult to meet the high requirements for battery safety of new energy vehicles and restricts the further popularization and promotion of new energy vehicles. Utility Model Content

[0004] The purpose of this invention is to provide a battery pack with irregularly shaped roller beams on all four sides, which can solve the problems of the bottom of the battery pack being easily damaged by scratches and insufficient side impact strength in the prior art.

[0005] To solve the above problems, the technical solution adopted by this utility model is: a battery pack with irregularly shaped roller beams on all four sides includes a lower shell, a U-shaped roller beam and an inner support. The U-shaped roller beam is disposed on the inner side of the lower shell, and the inner support is disposed on the inner side of the U-shaped roller beam.

[0006] A more specific technical solution to the above technical solution is that the U-shaped roller beam is welded together from four irregularly shaped roller beams.

[0007] Furthermore, the irregularly shaped roll forming beam includes a roll forming beam body, and a stepped extension is provided on one side of the roll forming beam body.

[0008] Furthermore, the irregularly shaped roller beam is integrally formed.

[0009] Furthermore, the inner support edge is pressed against the upper surface of the extension.

[0010] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art: This utility model consists of a lower shell, a U-shaped roller beam, and an inner support, forming a three-layer support structure to replace the two-layer structure in the prior art. This improves the battery pack's resistance to bottom scratches and side impacts. The synergistic effect of the three layers not only enhances the protection capability in one direction but also strengthens the overall structural stability of the battery pack, reducing the displacement of internal components caused by vibration and impact. The lower shell serves as the bottom support structure of the battery pack, bearing its overall weight. The U-shaped roller beam is located around the inner perimeter of the lower shell, consisting of four irregularly shaped roller beams welded together to form a closed U-shaped structure. The irregularly shaped roller beams are designed to meet strength requirements, resisting localized impact forces during bottom scratches, preventing structural damage, and improving the structure's impact resistance. The inner support carries the battery module and works with the U-shaped roller beam to achieve bottom scratch and side impact protection. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of an existing battery pack; Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3 yes Figure 2 Sectional view at point AA; Figure 4 This is an exploded view of this utility model; Figure 5 This is a schematic diagram of the structure of an irregularly shaped roller beam; Figure 6 yes Figure 5 Sectional view at BB. Detailed Implementation

[0012] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model; however, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0013] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 therefore should not be construed as a limitation of this utility model.

[0014] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0015] like Figures 2 to 6 The battery pack shown has a four-sided irregularly shaped roller beam, including a lower shell 1, a U-shaped roller beam and an inner support 2. The U-shaped roller beam is located around the inner side of the lower shell 1, and the inner support 2 is located inside the U-shaped roller beam.

[0016] The U-shaped roller pressing beam is welded together from four integrally formed irregularly shaped roller pressing beams 3.

[0017] The irregularly shaped roll forming beam 3 includes a roll forming beam body, and a stepped extension is provided on one side of the roll forming beam body. The roll forming beam body includes a first vertical section 3-1, a first horizontal section 3-2, an oblique section 3-3, an arc section 3-4, a second horizontal section 3-5, and a second vertical section 3-6 arranged in sequence. The upper part of the second vertical section 3-6 is located outside the lower part of the first vertical section 3-1. The extension includes a third horizontal section 3-7, a third vertical section 3-8, and a fourth horizontal section 3-9 arranged in sequence. The fourth horizontal section 3-9 is connected to the top of the second vertical section 3-6.

[0018] The inner support 2 is pressed onto the upper surface of the third transverse section 3-7 of the extension.

[0019] This utility model consists of a lower shell 1, a U-shaped roller beam, and an inner support 2, forming a three-layer support structure to replace the two-layer structure in the prior art. This improves the battery pack's resistance to bottom scratches and side impacts. The synergistic effect of the three layers not only enhances the protection capability in one direction but also strengthens the overall structural stability of the battery pack, reducing the displacement of internal components caused by vibration and impact. The lower shell 1 serves as the bottom support structure of the battery pack, bearing the overall weight of the battery pack. The U-shaped roller beam is located around the inner perimeter of the lower shell 1, and is formed by welding four irregularly shaped roller beams 3 to form a closed U-shaped structure. The irregularly shaped roller beams 3 adopt an irregular design adapted to strength requirements, which can resist local impact forces during bottom scratches, avoid structural damage, and improve the structure's impact resistance. The inner support 2 is used to support the battery module and works with the U-shaped roller beam to achieve bottom scratch protection and side impact protection.

[0020] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A battery pack with irregularly shaped roll forming beams on all four sides, characterized in that: The device includes a lower housing, a U-shaped roller beam, and an inner support. The U-shaped roller beam is located around the inner perimeter of the lower housing, and the inner support is located inside the U-shaped roller beam. The U-shaped roller beam is welded from four irregularly shaped roller beams. Each irregularly shaped roller beam includes a roller beam body, and one side of the roller beam body has a stepped extension. The roller beam body includes a first vertical section, a first horizontal section, an oblique section, an arc section, a second horizontal section, and a second vertical section arranged sequentially. The upper part of the second vertical section is located outside the lower part of the first vertical section. The extension includes a third horizontal section, a third vertical section, and a fourth horizontal section arranged sequentially. The fourth horizontal section is connected to the top of the second vertical section.

2. The battery pack with irregularly shaped roll forming beams on all four sides according to claim 1, characterized in that: The irregularly shaped roller beam is integrally formed.

3. The battery pack with irregularly shaped roll forming beams on all four sides according to claim 2, characterized in that: The inner support edge is pressed onto the upper surface of the extension.

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