High-strength mounting beam for battery pack frame

Abstract

The utility model relates to a high-strength mounting beam for a battery pack frame, which comprises a first section body and a second section body which are vertically arranged, the first section body is bent towards the direction close to the second section body to form a third section body, and the third section body and the second section body are positioned on the same side of the first section body. A reinforcing rib I parallel to the second section body is bent on the third section body towards the direction close to the first section body; the end, away from the first section body, of the second section body is perpendicularly bent to form a fourth section body, the fourth section body and the first section body are located on the same side of the second section body, and the fourth section body is bent in the direction close to the first section body to form a fifth section body parallel to the second section body. And a reinforcing rib II parallel to the first section body is bent on the fifth section body towards the direction close to the second section body. The mounting beam has the effect of improving the structural strength and rigidity of the mounting beam.

Description

Technical Field

[0001] The utility model relates to the field of battery pack frames, and particularly relates to a high-strength mounting beam for a battery pack frame. Background Art

[0002] The utility model relates to the technical field of battery packs, and particularly relates to a three-cavity high-strength steel roll-formed profile mounting beam.

[0003] As a core component of new energy vehicles, the stability of the battery pack directly affects the performance of the vehicle. Most of the existing battery pack frames are made of aluminum profiles. The manufacturing cost of using aluminum profiles to make battery pack frames is high, and the strength and melting point of aluminum materials are low, which has obvious disadvantages in resisting collisions and battery fire prevention, and there are potential safety hazards. As a material for battery pack frames, steel profiles have obvious advantages in terms of raw material prices and carbon emissions compared with aluminum profiles. Under the same boundary conditions, the roll-forming process of steel profiles is about 30-40% lower in cost than the extrusion forming process of aluminum profiles.

[0004] At present, the main methods for the mounting beam of the steel profile battery pack frame are the "day" - shaped tube deformed profile and the "several" - shaped bent part plus inner lining. With the continuous improvement of the requirements of new energy enterprises for steel profile battery pack frames, the current mounting beam is difficult to meet the requirements of steel profile battery pack frames. Therefore, the structural strength and stiffness of the mounting beam also need to be improved. Content of the Utility Model

[0005] In order to solve the above technical problems, the present application provides a high-strength mounting beam for a battery pack frame.

[0006] The high-strength mounting beam for a battery pack frame provided by the present application adopts the following technical solutions:

[0007] A high-strength mounting beam for a battery pack frame includes a first section body and a second section body arranged vertically. The first section body is bent towards the second section body to form a third section body. The third section body and the second section body are on the same side of the first section body. The third section body is bent towards the first section body to form a first reinforcing rib parallel to the second section body. One end of the second section body far from the first section body is vertically bent to form a fourth section body. The fourth section body and the first section body are on the same side of the second section body. The fourth section body is bent towards the first section body to form a fifth section body parallel to the second section body. The fifth section body is bent towards the second section body to form a second reinforcing rib parallel to the first section body.

[0008] The first reinforcing rib is fixedly connected to the first section body through a first connecting section. The second reinforcing rib is fixedly connected to the second section body through a second connecting section. A third connecting section is arranged between the third section body and the first reinforcing rib. A fourth connecting section is arranged between the fifth section body and the second reinforcing rib. The mutually approaching surfaces of the third connecting section and the fourth connecting section are fixedly connected.

[0009] Preferably, the first body section, the second body section, the third body section, the fourth body section, the fifth body section, the first reinforcing rib, and the second reinforcing rib are integrally formed by rolling a steel component.

[0010] Preferably, the first connecting section is bent by the first reinforcing rib toward the direction close to the second body section, and the first connecting section is fixedly connected to the first body section.

[0011] Preferably, the second connecting section is bent by the second reinforcing rib toward the direction close to the first body section, and the second connecting section is fixedly connected to the second body section.

[0012] Preferably, the first body section, the third body section, and the first reinforcing rib form a first cavity, and the first cavity is triangular.

[0013] Preferably, the included angle formed between the first body section and the third body section is 50°, and the included angle formed between the third body section and the first reinforcing rib is 40°.

[0014] Preferably, an auxiliary inclined surface is provided between the first body section and the second body section.

[0015] Preferably, the included angle formed between the auxiliary inclined surface and the first body section is 60°, and the included angle formed between the auxiliary inclined surface and the second body section is 30°.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] 1. The first body section, the third body section, and the first reinforcing rib form a first cavity, the second body section, the fourth body section, the fifth body section, and the second reinforcing rib form a second cavity, the first body section, the second body section, the second reinforcing rib, and the first reinforcing rib form a third cavity. The first reinforcing rib and the second reinforcing rib enhance the internal supporting force of the hanging beam and the overall structural strength of the hanging beam. Compared with the "day" - shaped structure and the "ji" - shaped structure, the hanging beam of the present application has two reinforcing ribs and three cavities inside, improving the structural strength and stiffness of the hanging beam;

[0018] 2. The hanging beam is set as an integral structure, reducing the number of welding operations. Optimizing the multi - process machining into a single - process integral forming improves the manufacturability and processing efficiency, reduces the production cost, and realizes cost reduction and efficiency improvement;

[0019] 3. The first cavity is triangularly arranged, enabling the hanging beam to save the material of the steel component while improving the overall structural strength and stiffness;

[0020] 4. Compared with machining a right - angle between the first body section and the second body section, the auxiliary inclined surface provided between the first body section and the second body section divides the first body section and the second body section into two bending angles, making it more convenient for roll forming, and reducing the forming difficulty of the hanging beam. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of a high-strength mounting beam for a battery pack frame in an embodiment of the present application.

[0022] Figure 2 It is a schematic diagram for showing the end face structure of the mounting beam in an embodiment of the present application.

[0023] Explanation of reference numerals: 1, the first section; 2, the second section; 3, the third section; 31, the third connecting section; 4, the fourth section; 5, the fifth section; 51, the fourth connecting section; 6, the first reinforcing rib; 61, the first connecting section; 7, the second reinforcing rib; 71, the second connecting section; 81, the first cavity; 82, the second cavity; 83, the third cavity; 9, the auxiliary inclined plane.

[0024] a, the first weld position; b, the second weld position; c, the third weld position. Specific embodiments

[0025] The following further elaborates on the present application Figure 1-2 with reference to the accompanying drawings.

[0026] An embodiment of the present application discloses a high-strength mounting beam for a battery pack frame.

[0027] Referring to Figure 1-2 , the high-strength mounting beam for a battery pack frame includes a first section 1 and a second section 2 that are vertically arranged. The first section 1 is bent towards the direction close to the second section 2 to form a third section 3. The third section 3 and the second section 2 are on the same side of the first section 1. The third section 3 is bent towards the direction close to the first section 1 to form a first reinforcing rib 6 that is parallel to the second section 2. One end of the second section 2 far from the first section 1 is vertically bent to form a fourth section 4. The fourth section 4 and the first section 1 are on the same side of the second section 2. The fourth section 4 is bent towards the direction close to the first section 1 to form a fifth section 5 that is parallel to the second section 2. The fifth section 5 is bent towards the direction close to the second section 2 to form a second reinforcing rib 7 that is parallel to the first section 1.

[0028] The first section 1, the third section 3, and the first reinforcing rib 6 form a first cavity 81. The second section 2, the fourth section 4, the fifth section 5, and the second reinforcing rib 7 form a second cavity 82. The first section 1, the second section 2, the second reinforcing rib 7, and the first reinforcing rib 6 form a third cavity 83. The first reinforcing rib 6 and the second reinforcing rib 7 enhance the internal supporting force of the mounting beam and the overall structural strength of the mounting beam. Compared with the "day" - shaped structure and the "Ji" - shaped structure, the mounting beam in the present application has two reinforcing ribs and three cavities inside, improving the structural strength and stiffness of the mounting beam.

[0029] The first segment 1, the second segment 2, the third segment 3, the fourth segment 4, the fifth segment 5, the first reinforcing rib 6, and the second reinforcing rib 7 are integrally formed by rolling a steel part. In this embodiment, the steel part is made of high-strength steel. The mounting beam is set as an integral structure to reduce welding, optimize the multi-process processing to a single-process integral molding, improve the manufacturability and processing efficiency, reduce the production cost, and achieve cost reduction and efficiency improvement.

[0030] The reinforcing rib 1 6 is fixedly connected to the first segment body 1 through the connecting section 1 61 . The connecting section 1 61 is bent from the reinforcing rib 1 6 toward the direction close to the second segment body 2 . The connecting section 1 61 is fixedly welded to the first segment body 1 and forms a weld position 1 a.

[0031] The second reinforcing rib 7 is fixedly connected to the second segment body 2 through the second connecting section 71. The second connecting section 71 is bent from the second reinforcing rib 7 toward the direction close to the first segment body 1. The second connecting section 71 is fixedly welded to the second segment body 2 to form a weld position 2 b.

[0032] A connection section three 31 is provided between the third section body 3 and the reinforcing rib one 6, and a connection section four 51 is provided between the fifth section body 5 and the reinforcing rib two 7. The connection section three 31 and the connection section four 51 are fixedly welded on their mutually adjacent sides to form a weld position three c.

[0033] The extension direction of the connecting section 1 61 is perpendicular to the extension direction of the connecting section 2 71 , and the surface of the connecting section 3 31 and the connecting section 4 51 close to each other is a plane, which improves the welding stability between the connecting section 1 61 and the connecting section 2 71 and improves the overall strength of the mounting beam after welding.

[0034] The first segment 1, the third segment 3, and the reinforcing rib 6 form a cavity 81, and the cavity 81 is triangular. The angle between the first segment 1 and the third segment 3 is 50°, and the angle between the third segment 3 and the reinforcing rib 6 is 40°. The cavity 81 is triangularly arranged, so that the mounting beam can improve the overall structural strength and rigidity while saving the material of steel parts.

[0035] An auxiliary inclined plane 9 is provided between the first segment 1 and the second segment 2. The angle formed between the auxiliary inclined plane 9 and the first segment 1 is 60°, and the angle formed between the auxiliary inclined plane 9 and the second segment 2 is 30°. Compared with machining a right angle between the first segment 1 and the second segment 2, the auxiliary inclined plane 9 provided between the first segment 1 and the second segment 2 divides the first segment 1 and the second segment 2 into two bending angles, which is more convenient for roll forming and reduces the difficulty of forming the mounting beam.

[0036] The implementation principle of a high-strength mounting beam for a battery pack frame in the embodiment of the present application is as follows:

[0037] When processing the mounting beam, first bend the two sides of the steel in the width direction to form a connecting section 1 61 and a connecting section 2 71, then bend the end of the steel with the connecting section 1 61 toward the direction close to the connecting section 2 71 to form a reinforcing rib 1 6, and bend the end of the steel with the connecting section 2 71 toward the direction close to the connecting section 1 61 to form a reinforcing rib 2 7, and then bend the reinforcing rib 1 6 toward the direction close to the reinforcing rib 2 7 to form a third section 3, and at the same time, bend the reinforcing rib 2 7 toward the direction close to the reinforcing rib 1 6 to form a fifth section 5, and then bend the side of the fifth section 5 away from the reinforcing rib 1 6 to form a fourth section 4, and then weld the connecting section 1 61 to the first section 1 at the weld position 1 a, and weld the connecting section 2 71 to the second section 2 at the weld position 2 b, and finally bend the steel between the first section 1 and the second section 2, so that the connecting section 3 31 and the connecting section 4 51 are attached and welded at the weld position 3 c.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high-strength mounting beam for a battery pack frame, characterized in that: The invention comprises a first segment (1) and a second segment (2) which are arranged vertically, wherein the first segment (1) is bent with a third segment (3) in a direction close to the second segment (2), the third segment (3) and the second segment (2) are located on the same side of the first segment (1), and the third segment (3) is bent with a reinforcing rib (6) in a direction close to the first segment (1) and parallel to the second segment (2); the second segment (2) is vertically bent with a fourth segment (4) at one end away from the first segment (1), the fourth segment (4) and the first segment (1) are located on the same side of the second segment (2), the fourth segment (4) is bent with a fifth segment (5) in a direction close to the first segment (1) and parallel to the second segment (2), and the fifth segment (5) is bent with a reinforcing rib (7) in a direction close to the second segment (2); The reinforcing rib one (6) is fixedly connected to the first segment (1) via a connecting segment one (61), the reinforcing rib two (7) is fixedly connected to the second segment (2) via a connecting segment two (71), a connecting segment three (31) is provided between the third segment (3) and the reinforcing rib one (6), a connecting segment four (51) is provided between the fifth segment (5) and the reinforcing rib two (7), and the connecting segment three (31) and the connecting segment four (51) are fixedly connected at a surface close to each other.

2. The high-strength mounting beam for a battery pack frame according to claim 1, characterized in that: The first segment (1), the second segment (2), the third segment (3), the fourth segment (4), the fifth segment (5), the first reinforcing rib (6) and the second reinforcing rib (7) are integrally formed by rolling a steel part.

3. The high-strength mounting beam for a battery pack frame according to claim 1, characterized in that: The connecting section 1 (61) is bent from the reinforcing rib 1 (6) toward a direction close to the second section body (2), and the connecting section 1 (61) is fixedly connected to the first section body (1).

4. The high-strength mounting beam for a battery pack frame according to claim 1, characterized in that: The second connecting section (71) is bent from the second reinforcing rib (7) toward a direction close to the first section body (1), and the second connecting section (71) is fixedly connected to the second section body (2).

5. The high-strength mounting beam for a battery pack frame according to claim 1, characterized in that: The first segment (1), the third segment (3) and the reinforcing rib (6) form a cavity (81), and the cavity (81) is triangular in shape.

6. The high-strength mounting beam for a battery pack frame according to claim 5, characterized in that: The angle formed between the first section (1) and the third section (3) is 50°, and the angle formed between the third section (3) and the reinforcing rib 1 (6) is 40°.

7. The high-strength mounting beam for a battery pack frame according to claim 1, characterized in that: An auxiliary inclined surface (9) is provided between the first segment (1) and the second segment (2).

8. The high-strength mounting beam for a battery pack frame according to claim 7, characterized in that: The included angle formed between the auxiliary inclined surface (9) and the first segment (1) is 60°, and the included angle formed between the auxiliary inclined surface (9) and the second segment (2) is 30°.

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