High-strength boundary beam for battery pack frame

Abstract

The utility model relates to a high-strength boundary beam for a battery pack frame, which comprises a first section body, a second section body and a third section body, the second section body and the third section body are respectively arranged on two sides of the first section body, and both the second section body and the third section body are arranged perpendicular to the first section body. The second section body is bent towards the direction close to the third section body to form a fourth section body parallel to the first section body, the third section body is bent towards the direction close to the second section body to form a fifth section body parallel to the first section body, and the length of the section of the fourth section body is larger than that of the section of the fifth section body; a first reinforcing rib parallel to the second section body is bent on the fourth section body in the direction close to the first section body, a second reinforcing rib parallel to the first section body is bent on the first reinforcing rib in the direction close to the second section body, and a third reinforcing rib parallel to the second section body is bent on the second reinforcing rib in the direction close to the fourth section body. According to the technical scheme, the structural strength and rigidity of the battery pack frame edge beam are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of the side beam structure of a battery pack frame, in particular to a high-strength side beam for a battery pack frame. Background Technique

[0002] As a core component of new energy vehicles, the stability of the battery pack directly affects the performance of the vehicle.

[0003] Most of the existing battery pack frames are made of aluminum profiles. As side beams, aluminum profiles have high manufacturing costs, low strength and melting points of aluminum materials, and obvious disadvantages in resisting collisions and battery fire prevention, posing potential safety hazards. For the steel profile battery pack frame, its raw material price and carbon emissions have obvious advantages over aluminum profiles. Under the same boundary conditions, the rolling forming process of steel profiles is about 30-40% lower in cost than the extrusion forming process of aluminum profiles.

[0004] At present, the side beams of the steel profile battery pack frame usually adopt a "day" - shaped structure. With the continuous improvement of the quality requirements of new energy enterprises for battery pack frames, the strength and stiffness of the "day" - shaped structure in the rolled side beam profiles are difficult to meet the quality requirements of the battery pack frame. Therefore, it is urgent to improve the structural strength and stiffness of the side beams of the battery pack frame. Summary of the Utility Model

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

[0006] The high - strength side beam for a battery pack frame provided by this application adopts the following technical solution:

[0007] A high - strength side beam for a battery pack frame includes a first section body, a second section body, and a third section body. The second section body and the third section body are respectively arranged on both sides of the first section body. The second section body and the third section body are both perpendicular to the first section body. The second section body is bent towards the direction close to the third section body to form a fourth section body parallel to the first section body. The third section body is bent towards the direction close to the second section body to form a fifth section body parallel to the first section body. The length of the cross - section of the fourth section body is greater than the length of the cross - section of the fifth section body. The fourth section body is bent towards the direction close to the first section body to form a first reinforcing rib parallel to the second section body. The first reinforcing rib is bent towards the direction close to the second section body to form a second reinforcing rib parallel to the first section body. The second reinforcing rib is bent towards the direction close to the fourth section body to form a third reinforcing rib parallel to the second section body.

[0008] The third reinforcing rib is fixedly connected to the fourth section body through a first connecting section. The second reinforcing rib is fixedly connected to the side of the first section body that is close to each other. The first reinforcing rib is fixedly connected to the fifth section body through a second connecting section.

[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, the second reinforcing rib, and the third reinforcing rib are integrally roll-formed from a steel part.

[0010] Preferably, the first connecting section is formed by bending the third reinforcing rib towards the second body section, and the first connecting section is fixedly connected to the side of the fourth body section that is close to it.

[0011] Preferably, the second connecting section is formed by bending the fifth body section towards the first body section, and the second connecting section is fixedly connected to the side of the first reinforcing rib that is close to it.

[0012] Preferably, the side of the first body section close to the second body section is inclined away from the fourth body section to form a first inclined portion, and the first inclined portion and the side of the second body section close to the first body section form a first convex angle;

[0013] The side of the first body section close to the third body section is inclined away from the fifth body section to form a second inclined portion, and the second inclined portion and the side of the third body section close to the first body section form a second convex angle.

[0014] Preferably, an inner concave portion is provided on the side of the second body section close to the first inclined portion, and the inner concave portion protrudes towards the third body section.

[0015] Preferably, the connection between the second body section and the fourth body section is arranged in an arc shape, and the connection between the third body section and the fifth body section is arranged in an arc shape.

[0016] Preferably, the connection between the third reinforcing rib and the first connecting section is arranged in an arc shape.

[0017] Preferably, the connection between the fifth body section and the second connecting section is arranged in an arc shape.

[0018] In summary, the present application includes at least one of the following beneficial technical effects:

[0019] 1. The fourth body section, the first reinforcing rib, the second reinforcing rib, and the third reinforcing rib enclose a first cavity, the first body section, the second body section, the fourth body section, and the third reinforcing rib enclose a second cavity, the first body section, the third body section, the fifth body section, and the first reinforcing rib enclose a third cavity. The first reinforcing rib, the second reinforcing rib, and the third reinforcing rib enhance the internal support force of the side beam and the overall structural strength of the side beam. Compared with the "day" character structure, the side beam of the present application has three reinforcing ribs and three cavities inside, improving the structural strength and stiffness of the side beam;

[0020] 2. The settings of the first convex angle, the second convex angle, and the inner concave portion further improve the structural strength and stiffness of the side beam;

[0021] 3. Set the side beam as an integrated structure to reduce the welding process, optimize the multi-process processing to a single-process integrated molding, improve manufacturability, improve product air tightness, improve processing efficiency, reduce production costs, and achieve cost reduction and efficiency improvement. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of a high-strength side beam for a battery pack frame in an embodiment of the present application.

[0023] Figure 2 It is a structural schematic diagram used to display the end face of the side beam in the embodiment of the present application.

[0024] Description of reference numerals: 1, first segment; 11, inclined portion 1; 111, first convex corner; 12, inclined portion 2; 121, second convex corner; 2, second segment; 21, inner concave portion; 3, third segment; 4, fourth segment; 5, fifth segment; 6, reinforcing rib 1; 61, connecting segment 2; 7, reinforcing rib 2; 8, reinforcing rib 3; 81, connecting segment 1; 91, cavity 1; 92, cavity 2; 93, cavity 3;

[0025] a. Weld position one; b. Weld position two; c. Weld position three; d. Weld position four. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-2 This application is described in further detail.

[0027] An embodiment of the present application discloses a high-strength side beam for a battery pack frame.

[0028] Reference Figure 1-2 The high-strength side beam for the battery pack frame includes a first section 1, a second section 2, and a third section 3. The second section 2 and the third section 3 are respectively arranged on both sides of the first section 1, wherein the second section 2 is located on the right side of the first section 1, and the third section 3 is located on the left side of the first section 1. The second section 2 and the third section 3 are both arranged perpendicular to the first section 1.

[0029] The second section 2 is bent toward the direction close to the third section 3 to form a fourth section 4 parallel to the first section 1, the third section 3 is bent toward the direction close to the second section 2 to form a fifth section 5 parallel to the first section 1, the length of the cross section of the fourth section 4 is greater than the length of the cross section of the fifth section 5, the fourth section 4 is bent toward the direction close to the first section 1 to form a reinforcing rib 1 6 parallel to the second section 2, the reinforcing rib 1 6 is bent toward the direction close to the second section 2 to form a reinforcing rib 2 7 parallel to the first section 1, and the reinforcing rib 2 7 is bent toward the direction close to the fourth section 4 to form a reinforcing rib 3 8 parallel to the second section 2.

[0030] The fourth body 4, the first reinforcing rib 6, the second reinforcing rib 7, and the third reinforcing rib 8 enclose a first cavity 91. The first body 1, the second body 2, the fourth body 4, and the third reinforcing rib 8 enclose a second cavity 92. The first body 1, the third body 3, the fifth body 5, and the first reinforcing rib 6 enclose a third cavity 93. The first reinforcing rib 6, the second reinforcing rib 7, and the third reinforcing rib 8 enhance the internal support force of the side beam and the overall structural strength of the side beam. Compared with the "day" - shaped structure, the side beam of the present application has three reinforcing ribs and three cavities inside, improving the structural strength and stiffness of the side beam.

[0031] The first body 1, the second body 2, the third body 3, the fourth body 4, the fifth body 5, the first reinforcing rib 6, the second reinforcing rib 7, and the third reinforcing rib 8 are integrally formed by rolling a steel part. The steel part in this embodiment uses high - strength steel. Setting the side beam as an integral structure reduces the welding process, optimizes the multi - process machining into a single - process integral forming, improves the manufacturability, improves the airtightness of the product, improves the processing efficiency, reduces the production cost, and realizes cost reduction and efficiency increase.

[0032] The third reinforcing rib 8 is fixedly connected to the fourth body 4 through a connecting section 81. The connecting section 81 is formed by bending the third reinforcing rib 8 towards the direction close to the second body 2. The mutually - approaching surfaces of the connecting section 81 and the fourth body 4 are fixedly welded and form a weld position a.

[0033] The mutually - approaching surfaces of the second reinforcing rib 7 and the first body 1 are fixedly welded. The side of the second reinforcing rib 7 close to the first reinforcing rib 6 is the weld position b, and the side of the second reinforcing rib 7 close to the third reinforcing rib 8 is the weld position c.

[0034] The first reinforcing rib 6 is fixedly connected to the fifth body 5 through a connecting section 61. The connecting section 61 is formed by bending the fifth body 5 towards the direction close to the first body 1. The mutually - approaching surfaces of the connecting section 61 and the first reinforcing rib 6 are fixedly welded and form a weld position d.

[0035] The extending direction of the connecting section 81 is perpendicular to the extending direction of the connecting section 61. The second reinforcing rib 7 and the first body 1 are provided with two weld positions, improving the overall strength of the side beam after welding.

[0036] One side of the first body 1 close to the second body 2 inclines away from the fourth body 4 and forms an inclined part 11. The inclined part 11 and one side of the second body 2 close to the first body 1 form a first convex angle 111.

[0037] One side of the first body 1 close to the third body 3 inclines away from the fifth body 5 with an inclined part 12. The inclined part 12 and one side of the third body 3 close to the first body 1 form a second convex angle 121.

[0038] A concave portion 21 is disposed on one side of the second segment 2 close to the inclined portion 11 , and the concave portion 21 protrudes toward a direction close to the third segment 3 .

[0039] The provision of the first convex corner 111 , the second convex corner 121 , and the inner concave portion 21 further improves the structural strength and rigidity of the side beam.

[0040] The connection between the second segment 2 and the fourth segment 4 is arranged in an arc shape, and the connection between the third segment 3 and the fifth segment 5 is arranged in an arc shape. The connection between the reinforcing rib 3 8 and the connecting segment 1 81 is arranged in an arc shape. The connection between the fifth segment 5 and the connecting segment 2 61 is arranged in an arc shape.

[0041] The implementation principle of a high-strength side beam for a battery pack frame in the embodiment of the present application is:

[0042] When processing the side beam, first bend the two sides of the steel material in the width direction to form the connection section 1 81 and the connection section 2 61, then bend the side of the steel material with the connection section 1 81 toward the direction close to the connection section 2 61, so that the connection section 1 81 fits with the fourth section body 4 to form a cavity 1 91, at this time, the reinforcement ribs 3 8, the reinforcement ribs 2 7, and the reinforcement ribs 1 6 are formed, and then the connection section 1 81 and the fourth section body 4 are welded and fixed at the welding position 1 a; then bend the side of the steel material with the connection section 2 61 toward Bend toward the direction close to cavity one 91 to form the third segment 3 and the fifth segment 5. Finally, bend cavity one 91 toward the direction close to the third segment 3 to fit the reinforcing rib one 6 with the connecting segment two 61 and the reinforcing rib two 7 with the first segment 1. At this time, both cavity two 92 and cavity three 93 are formed. Then, the first segment 1 and the reinforcing rib two 7 are welded and fixed at weld position two b and weld position three c. Finally, the connecting segment two 61 and the reinforcing rib one 6 are welded and fixed at weld position four d.

[0043] 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 side beam for a battery pack frame, characterized in that: The invention comprises a first segment body (1), a second segment body (2) and a third segment body (3), wherein the second segment body (2) and the third segment body (3) are respectively arranged on both sides of the first segment body (1), the second segment body (2) and the third segment body (3) are both arranged perpendicular to the first segment body (1), the second segment body (2) is bent in a direction close to the third segment body (3) to form a fourth segment body (4) parallel to the first segment body (1), and the third segment body (3) is bent in a direction close to the second segment body (2) to form a fourth segment body (4) parallel to the first segment body (1). A fifth segment (5), wherein the length of the cross section of the fourth segment (4) is greater than the length of the cross section of the fifth segment (5), the fourth segment (4) is bent toward the direction close to the first segment (1) to form a reinforcing rib (6) parallel to the second segment (2), the reinforcing rib (6) is bent toward the direction close to the second segment (2) to form a reinforcing rib (7) parallel to the first segment (1), and the reinforcing rib (7) is bent toward the direction close to the fourth segment (4) to form a reinforcing rib (8) parallel to the second segment (2); The reinforcing rib three (8) is fixedly connected to the fourth segment (4) via the connecting segment one (81), the reinforcing rib two (7) is fixedly connected to a mutually adjacent surface of the first segment (1), and the reinforcing rib one (6) is fixedly connected to the fifth segment (5) via the connecting segment two (61).

2. The high-strength side 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), the second reinforcing rib (7) and the third reinforcing rib (8) are integrally formed by rolling a steel part.

3. The high-strength side beam for a battery pack frame according to claim 1, characterized in that: The connecting section one (81) is formed by bending the reinforcing rib three (8) toward the direction close to the second section body (2), and the connecting section one (81) is fixedly connected to a surface of the fourth section body (4) close to each other.

4. The high-strength side beam for a battery pack frame according to claim 1, characterized in that: The second connecting section (61) is formed by bending the fifth section (5) toward the direction close to the first section (1), and the second connecting section (61) is fixedly connected to a side of the reinforcing rib (6) close to each other.

5. The high-strength side beam for a battery pack frame according to claim 1, characterized in that: The side of the first segment (1) close to the second segment (2) is inclined in a direction away from the fourth segment (4) and forms an inclined portion 1 (11), and the inclined portion 1 (11) and the side of the second segment (2) close to the first segment (1) form a first convex angle (111); A second inclined portion (12) is formed on a side of the first segment (1) close to the third segment (3) and inclined in a direction away from the fifth segment (5). A second convex angle (121) is formed between the second inclined portion (12) and a side of the third segment (3) close to the first segment (1).

6. The high-strength side beam for a battery pack frame according to claim 1, characterized in that: A concave portion (21) is provided on one side of the second section (2) close to the inclined portion 1 (11), and the concave portion (21) protrudes in a direction close to the third section (3).

7. The high-strength side beam for a battery pack frame according to claim 1, characterized in that: The connection between the second segment (2) and the fourth segment (4) is arranged in an arc shape, and the connection between the third segment (3) and the fifth segment (5) is arranged in an arc shape.

8. The high-strength side beam for a battery pack frame according to claim 3, characterized in that: The connection between the reinforcing rib three (8) and the connecting section one (81) is arranged in an arc shape.

9. The high-strength side beam for a battery pack frame according to claim 4, characterized in that: The connection between the fifth segment (5) and the second connection segment (61) is arranged in an arc shape.

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