Battery pack tray structure based on CAE analysis and design method

Abstract

The invention discloses a battery pack tray structure based on CAE analysis and a design method, and belongs to the field of battery pack trays, the battery pack tray structure comprises a tray body, two first transverse rods are arranged on the right side of the interior of the tray body, and a plurality of first vertical rods are fixedly connected to the opposite sides of the two first transverse rods; the left side of the first vertical rod located on the left side of the interior of the tray body is symmetrically and fixedly connected with second transverse rods, the left ends of the two second transverse rods are jointly and fixedly connected with a second vertical rod, and the left end of the second vertical rod is symmetrically and fixedly connected with two third transverse plates. A mutually connected and synergistic frame system is formed by combining the transverse rods, the vertical rods, the inclined rods and the like, so that force can be effectively dispersed and transmitted to all parts, local stress concentration is avoided, the overall strength and stability of the tray structure are guaranteed, and the service life of the tray structure is prolonged. And meanwhile, the effect of meeting the use requirement is achieved by using materials as little as possible, so that the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of battery pack trays, and in particular to a battery pack tray structure and design method based on CAE analysis. Background Art

[0002] With the global emphasis on environmental protection and the concern about the pollution caused by exhaust emissions from traditional fuel vehicles, the electric vehicle industry has developed rapidly. Electric vehicles rely on battery packs to store and provide electrical energy, and battery packs require reliable support and protection structures. As a key component for carrying battery packs, the importance of battery pack trays is becoming increasingly prominent.

[0003] The current mainstream battery pack tray structure design scheme relies on the work experience of designers. When designers have less experience, repeated analysis and verification will be increased, and the test cycle will be extended, thereby increasing the overall cost expenditure. Summary of the invention

[0004] Purpose of the invention: The purpose of the present invention is to provide a solution to the problem that the current mainstream battery pack tray structure design scheme has increased repeated analysis and verification, prolonged test cycles, and increased overall cost expenditures when designers have less experience.

[0005] Technical solution: A battery pack tray structure based on CAE analysis, comprising a tray body, wherein two cross bars 1 are arranged on the inner right side of the tray body, a plurality of vertical bars 1 are fixedly connected to the opposite sides of the two cross bars 1, a cross bar 2 is symmetrically fixedly connected to the left side of the vertical bar 1 located on the left side of the inner side of the tray body, the left ends of the two cross bars 2 are commonly fixedly connected to the vertical bar 2, the left ends of the vertical bar 2 are symmetrically fixedly connected to two cross plates 3, the vertical bars 3 are arranged on the opposite sides and back sides of the two cross bars 2, and the outer side wall of the tray body is integrally formed with a plurality of tray fixing points.

[0006] Furthermore, two fixing point brackets are symmetrically fixedly connected to the opposite sides of the two cross bars.

[0007] Furthermore, the left side and the right side of the outer wall of the vertical rod 2 are symmetrically fixedly connected with diagonal rods, and the ends of the multiple diagonal rods away from the vertical rod 2 are respectively fixedly connected to the opposite sides of the two horizontal rods 2 and the opposite sides of the two horizontal plates 3.

[0008] Furthermore, the dimensions and materials of the two horizontal bars 1 and the vertical bars 2 are both 60*40*3 square steel materials.

[0009] Furthermore, the size and material of the plurality of diagonal rods are 40*30*2 square steel material.

[0010] Furthermore, the plurality of fixed point brackets are formed by welding 6 mm steel plates.

[0011] Furthermore, the dimensions and materials of the plurality of vertical bars 1, the two horizontal bars 2 and the plurality of vertical bars 3 are 40*30*2 channel steel materials.

[0012] According to another aspect of the present invention, a battery pack tray design method based on CAE analysis is provided, comprising the following steps:

[0013] S1, firstly divide the design area grid of the pallet body;

[0014] S2. Given relevant parameters (materials, constraints, etc.);

[0015] S3, setting the optimal target (maximum stress value and minimum volume);

[0016] S4, submit the operation and read the result;

[0017] S5. Carry out structural design work based on the results;

[0018] S6. Finally, perform simulation verification. If the verification passes, the design is completed. If not, repeat step S5 until the verification passes.

[0019] Beneficial effects: The present invention forms an interconnected and synergistic frame system through the combination of multiple horizontal bars, vertical bars, diagonal bars and other components, so that the force can be effectively dispersed and transmitted to various parts, avoiding local stress concentration, ensuring the overall strength and stability of the pallet structure, and at the same time achieving the effect of meeting the use requirements with the least amount of material, thereby reducing the production cost;

[0020] The present invention is based on CAE analysis. Designers can use professional software in a computer virtual environment to conduct a comprehensive simulation analysis of the proposed tray structure in advance, such as static analysis to view the stress distribution of each component when bearing the weight of the battery pack, and dynamic analysis to simulate the response of the tray under vibration, impact and other working conditions during vehicle driving. In this way, potential problems can be accurately discovered in the early stages of design and optimized and adjusted in a timely manner. While quickly guiding structural design and verifying structural feasibility, it also saves materials, reduces costs and brings significant economic benefits to the manufacturing industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the tray body of the present invention;

[0023] Figure 3 It is a schematic diagram of the overall design process of the present invention.

[0024] In the figure: 1. Pallet body; 2. Horizontal bar 1; 3. Vertical bar 1; 4. Horizontal bar 2; 5. Vertical bar 2; 6. Horizontal board 3; 7. Vertical bar 3; 8. Fixed point bracket; 9. Diagonal bar; 10. Pallet fixing point. DETAILED DESCRIPTION

[0025] In order to make the technical solution of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Example 1

[0027] like Figure 1 and Figure 2 As shown, a battery pack tray structure based on CAE analysis is provided, including a tray body 1, two cross bars 1 2 are arranged on the right side of the inside of the tray body 1, a plurality of vertical bars 1 3 are fixedly connected to the opposite sides of the two cross bars 1 2, a cross bar 2 4 is symmetrically fixedly connected to the left side of the vertical bar 1 3 located on the left side of the inside of the tray body 1, a vertical bar 2 5 is fixedly connected to the left ends of the two cross bars 2 4, two cross plates 3 6 are symmetrically fixedly connected to the left ends of the vertical bar 2 5, vertical bars 3 7 are arranged on the opposite sides and the back sides of the two cross bars 2 4, and a plurality of tray fixing points 10 are integrally formed on the outer side wall of the tray body 1;

[0028] A frame-like structure is formed by setting up multiple horizontal bars and multiple vertical bars, so that the gravity generated by placing the battery pack on the tray body 1 can be dispersed more evenly, avoiding local stress concentration, so that the tray body 1 can stably bear the weight of the battery pack, and the battery pack can be kept in a stable supported state under different working conditions such as normal vehicle driving, acceleration, braking, and encountering bumpy roads, effectively preventing the normal use and safety of the battery pack from being affected by deformation of the tray body 1. At the same time, the multiple tray fixing points 10 set up help to achieve a more stable and precise installation when the tray body 1 is installed to the corresponding position such as the vehicle chassis.

[0029] like Figure 2 As shown, the two cross bars 1 2 are symmetrically fixedly connected to the opposite sides with two fixing point brackets 8;

[0030] The fixed point brackets 8 are symmetrically distributed, which helps to ensure the overall force balance of the tray body 1. At the same time, multiple fixed point brackets 8 can further enhance the installation stability of the fixed point brackets 8, ensuring that the battery pack is always in a stable support state.

[0031] like Figure 2 As shown, the left side and the right side of the outer wall of the vertical rod 2 5 are symmetrically fixedly connected with oblique rods 9, and the ends of the multiple oblique rods 9 away from the vertical rod 2 5 are respectively fixedly connected to the opposite sides of the two horizontal rods 2 4 and the opposite sides of the two horizontal plates 3 6;

[0032] The multiple diagonal bars 9, together with the vertical bar 2 5, the horizontal bar 2 4 and the horizontal plate 3 6 form multiple triangular structures, which can effectively enhance the overall rigidity of the tray body 1, making the structure of the tray body 1 less prone to twisting and deformation, thereby ensuring that the battery pack is always firmly carried and protected.

[0033] like Figure 2 As shown, the dimensions and materials of the two horizontal bars 2 and the vertical bars 5 are both 60*40*3 square steel materials.

[0034] like Figure 2 As shown, the multiple fixing point brackets 8 are all formed by welding 6 mm steel plates.

[0035] like Figure 2 As shown, the dimensions and materials of the plurality of vertical bars 1 3, the two horizontal bars 2 4 and the plurality of vertical bars 3 7 are 40*30*2 channel steel material.

[0036] like Figure 2 As shown, the size and material of the plurality of diagonal rods 9 are 40*30*2 square steel material.

[0037] According to another aspect of the present invention, a battery pack tray design method based on CAE analysis is provided, comprising the following steps:

[0038] S1, first divide the design area grid of the pallet body 1;

[0039] S2. Given relevant parameters (materials, constraints, etc.);

[0040] S3, setting the optimal target (maximum stress value and minimum volume);

[0041] S4, submit the operation and read the result;

[0042] S5. Carry out structural design work based on the results;

[0043] S6. Finally, perform simulation verification. If the verification passes, the design is completed. If not, repeat step S5 until the verification passes.

[0044] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A battery pack tray structure based on CAE analysis, comprising a tray body (1), characterized in that: Two cross bars (2) are arranged on the right side of the interior of the pallet body (1); a plurality of vertical bars (3) are fixedly connected to the opposite sides of the two cross bars (2); a cross bar (4) is symmetrically fixedly connected to the left side of the vertical bar (3) located on the left side of the interior of the pallet body (1); a vertical bar (5) is commonly fixedly connected to the left ends of the two cross bars (4); two cross plates (6) are symmetrically fixedly connected to the left ends of the vertical bars (5); vertical bars (7) are arranged on the opposite sides and the opposite sides of the two cross bars (4); and a plurality of pallet fixing points (10) are integrally formed on the outer side wall of the pallet body (1).

2. According to claim 1, a battery pack tray structure based on CAE analysis is characterized in that: Two fixed point brackets (8) are symmetrically fixedly connected to the opposite sides of the two cross bars (2).

3. The battery pack tray structure based on CAE analysis according to claim 1 is characterized in that: The left side and the right side of the outer wall of the second vertical rod (5) are both symmetrically fixedly connected with oblique rods (9), and one end of the plurality of oblique rods (9) away from the second vertical rod (5) is respectively fixedly connected to the opposite sides of the two second horizontal rods (4) and the opposite sides of the two third horizontal plates (6).

4. The battery pack tray structure based on CAE analysis according to claim 1, characterized in that: The dimensions and materials of the two horizontal bars 1 (2) and the vertical bars 2 (5) are both 60*40*3 square steel materials.

5. The battery pack tray structure based on CAE analysis according to claim 3 is characterized in that: The size and material of the plurality of diagonal rods (9) are 40*30*2 square steel materials.

6. The battery pack tray structure based on CAE analysis according to claim 2 is characterized in that: The plurality of fixed point brackets (8) are all formed by welding 6 mm steel plates.

7. The battery pack tray structure based on CAE analysis according to claim 1 is characterized in that: The dimensions and materials of the plurality of vertical bars one (3), the two horizontal bars two (4) and the plurality of vertical bars three (7) are 40*30*2 channel steel material.

8. A battery pack tray design method based on CAE analysis, comprising a battery pack tray structure based on CAE analysis as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: S1, firstly dividing the design area grid of the tray body (1); S2. Given relevant parameters (materials, constraints, etc.); S3, setting the optimal target (maximum stress value and minimum volume); S4, submit the operation and read the result; S5. Carry out structural design work based on the results; S6. Finally, perform simulation verification. If the verification passes, the design is completed. If not, repeat step S5 until the verification passes.

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