Battery pack box body frame structure

Abstract

The utility model belongs to the technical field of battery pack box body structures, and discloses a battery pack box body frame structure which comprises a frame component and a reinforcing component consisting of a vertical plate component and a transverse plate component. Through the arrangement of the vertical plate component, the thickness of the second side edge can be increased, that is, the wall thickness of the side frame of the lifting lug is increased, the fatigue damage of a steel material of the second side edge is reduced, and the vertical plate component plays a positive optimization role in the aspects of airtightness, damage and stress of the frame component; the strength of the interior of the frame component in the width direction can be enhanced, and when the battery pack is subjected to extrusion, column collision and other working conditions, large damage resisting capacity can be provided, so that the internal structure of the battery pack is protected.

Description

Technical Field

[0001] This utility model belongs to the technical field of battery pack box structure, specifically relating to a battery pack box frame structure. Background Technology

[0002] With the development of economy and technology, new energy vehicles have become a prominent emerging industry in the automotive industry. They can not only meet people's pursuit of energy conservation and environmental protection, but also reduce people's expenses for using gasoline vehicles.

[0003] There are currently two materials used for the battery pack housing of new energy vehicles: aluminum and steel. Aluminum is widely used in new energy vehicle battery packs due to its ductility and lightweight properties, but it is more expensive. Steel housings are cheaper and are used in some housings, but unlike aluminum housings, steel housings cannot have complex diagonal ribs built into their cavities, making it difficult for the overall rigidity of steel housings to meet the requirements. Utility Model Content

[0004] The purpose of this utility model is to provide a battery pack housing frame structure to solve the problem of low strength of existing steel housings mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a battery pack housing frame structure, comprising:

[0006] A border component, wherein a hollow section is defined within the border component, and a first side and a second side are present in the width direction;

[0007] And a reinforcing component, the reinforcing interval being configured to be inserted into the hollow interval and including:

[0008] The upright plate component extends along the inner wall of the second side and is connected to the second side.

[0009] At least one horizontal plate member is provided, the single horizontal plate member is arranged perpendicular to the vertical plate member, and one side edge of the horizontal plate member is connected to the vertical plate member in the width direction, and the other side edge abuts against the inner wall of the first side.

[0010] Based on the setting of the vertical plate component, the thickness of the second side can be increased, that is, the wall thickness of the lifting lug side frame can be strengthened, and the fatigue damage of the steel material on the second side can be reduced. It plays a positive optimization role in terms of airtightness, damage and stress of the frame component. Based on the extension design of the horizontal plate component in the width direction of the frame component, the internal width direction strength of the frame component can be strengthened. When the battery pack is subjected to extrusion, column impact and other working conditions, it can provide greater resistance to damage, thereby protecting the internal structure of the battery pack.

[0011] Furthermore, a plug welding hole is provided on the second side.

[0012] Furthermore, the border component is a rectangular border.

[0013] Furthermore, the thickness of the upright plate component is greater than the thickness of the second side.

[0014] By setting up vertical plate components with a thickness greater than that of the second side, the strength of the frame structure can be further improved.

[0015] Furthermore, multiple horizontal plate components are provided, and the multiple horizontal plate components are spaced apart in the height direction of the frame component.

[0016] A battery pack housing frame structure, comprising:

[0017] A frame member has a first side and a second side in the width direction, and a slot extending along the length direction of the frame member is formed on the first side.

[0018] and a reinforcing component, the reinforcing component comprising:

[0019] The upright plate component extends along the inner wall of the second side and is connected to the second side.

[0020] The bending member includes a first plate portion and a second plate portion. The first plate portion has a first edge and a second edge in the width direction. The first edge is connected to the upright plate member. The second edge extends along the width direction of the frame member and passes through the slot. The second plate portion is formed by extending the second end of the first plate portion along the outer wall of the first side.

[0021] The bending position in the bent component can be selected based on the size of the frame component, which can be applied to frame components of various sizes. There is no need to re-make the mold. You only need to plan a reasonable bending path and bending head, which can greatly reduce the mold opening cost.

[0022] Furthermore, a plug welding hole is provided on the second side.

[0023] Furthermore, the plug welding holes are provided in multiple forms and arranged in a rectangular array on the second side.

[0024] Furthermore, the first side outer wall and the second plate body are welded together.

[0025] Furthermore, the thickness of the second plate body is greater than the thickness of the first side. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall shape of the frame structure in Embodiment 1;

[0027] Figure 2 This is a cross-sectional view of Embodiment 1 of the border structure;

[0028] Figure 3 To enhance the schematic diagram of the assembly welding in Embodiment 1 of the component;

[0029] Figure 4 This is a schematic diagram of the overall structure of Example 2;

[0030] Figure 5 This is a cross-sectional view of Embodiment 2 of the frame structure;

[0031] Figure 6 A schematic diagram of the welding process in Embodiment 2 of the component reinforcement. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Example 1:

[0034] A battery pack housing frame structure, as shown in the reference Figure 1 The main body consists of a frame member 100 and reinforcing components. The frame member 100 is a molded frame, and its interior is hollow, meaning that a hollow section 101 is defined within the frame member 100 for the insertion of the reinforcing components. By configuring the reinforcing components within the hollow section 101 inside the frame member 100, the strength of the steel frame can be increased without changing the shape of the frame member 100. Furthermore, it eliminates the need for additional molds, reducing production costs. In some embodiments, refer to... Figure 2 The aforementioned frame member 100 has a first side 100a and a second side 100b in the width direction, and a top edge and a bottom edge spaced apart in the height direction. The top edge, the first side 100a, the bottom edge, and the second side 100b are connected end to end to form a rectangular frame member 100. The first side 100a constitutes the inner side of the frame member 100, that is, the first side 100a is located adjacent to the inner section of the battery pack housing. Correspondingly, the second side 100b constitutes the outer side of the frame member 100, that is, the second side 100b is located adjacent to the side section of the battery pack housing near the lugs. (Refer to...) Figure 2The aforementioned reinforcing components include a vertical plate member 300 and at least one horizontal plate member 400. The vertical plate member 300 is attached to the inner wall of the second frame, that is, the vertical plate member 300 extends along the inner wall (i.e., the intermediate section wall) of the second side 100b. The vertical plate member 300 and the second side 100b are fixed together by welding or other methods. For example, a plug weld hole 102 is provided on the second side 100b. During assembly, the vertical plate member 300 and the second side 100b are plug welded through the plug weld hole 102 to achieve the connection between the vertical plate member 300 and the second side 100b. The welded connection between 100b further includes multiple plug weld holes 102 on the second side 100b, arranged in a rectangular array. Based on the arrangement of the upright plate member 300, the thickness of the second side 100b can be increased, i.e., the wall thickness of the lifting lug side frame can be strengthened, reducing fatigue damage to the steel material of the second side 100b. This has a positive optimization effect on the airtightness, damage, and stress of the frame member 100. In some embodiments, the thickness of the upright plate member 300 is greater than the thickness of the second side 100b, in order to further improve the overall strength of the frame structure. Continuing to refer to... Figure 2 In some embodiments, the horizontal plate member 400 is arranged perpendicular to the vertical plate member 300, that is, the width direction of the horizontal plate member 400 is parallel to the width direction of the frame member 100, and one edge of the horizontal plate member 400 in the width direction is welded to the vertical plate member 300, and the other edge abuts against the inner sidewall of the first side 100a. In some embodiments, there are multiple horizontal plate members 400, and the multiple horizontal plate members 400 are spaced apart in the height direction of the frame member 100. Taking the arrangement of a single horizontal plate member 400 as an example, the single horizontal plate member 400 is located in the middle position of the vertical plate member 300 in the height direction of the frame member 100. The vertical plate member 300 and the horizontal plate member 400 together constitute a T-shaped structural reinforcement. Based on the extension design of the horizontal plate member 400 in the width direction of the frame member 100, the internal width direction strength of the frame member 100 can be strengthened. When the battery pack is subjected to extrusion, column impact, or other conditions, it can provide greater resistance to damage, thereby protecting the internal structure of the battery pack.

[0035] When assembling the frame structure, first refer to the vertical plate component 300 and the horizontal plate component 400. Figure 3 The T-shaped reinforcing structure is formed by welding and assembling the components. Then, the T-shaped reinforcing structure is placed into the hollow section 101 inside the frame member 100, so that the upright plate member 300 of the T-shaped reinforcing structure is attached to the second side 100b. In the third step, the T-shaped reinforcing structure is welded to the frame member 100 through the plug welding hole 102, and finally the frame member 100 with internal reinforcing components is obtained.

[0036] Example 2:

[0037] A battery pack housing frame structure, as shown in the reference Figure 4 The main body consists of a frame member 200 and a reinforcing component. The frame member 200 is a bent frame, and its interior is hollow, defining a hollow section 201 within it. This hollow section 201 allows the reinforcing component to enter. Based on the function of the reinforcing component, the strength of the steel frame can be increased without changing the shape of the frame member 200, while eliminating the need for a separate mold, thus reducing production costs. In some embodiments, refer to... Figure 5 The aforementioned frame member 200 has a first side 200a and a second side 200b in the width direction, and a top edge and a bottom edge spaced apart in the height direction. A slot extending along the length of the frame member 200 is formed on the first side 200a. The top edge, first side 200a, bottom edge, and second side 200b are connected end-to-end to form a C-shaped frame member 200. The first side 200a constitutes the inner side of the frame member 200, that is, the first side 200a is located adjacent to the inner section of the battery pack housing. Correspondingly, the second side 200b constitutes the outer side of the frame member 200, that is, the second side 200b is located adjacent to the side section of the battery pack housing. (Refer to...) Figure 5 The aforementioned reinforcing components include a vertical plate member 301 and a bending member 500. The vertical plate member 301 is attached to the inner wall of the second side frame, that is, the vertical plate member 301 extends along the inner wall of the second side 200b. The vertical plate member 301 and the second side 200b are fixed together by welding or other methods. For example, the second side 200b has plug weld holes 202. During assembly, the vertical plate member 301 and the second side 200b are plug welded through the plug weld holes 202 to achieve a welded connection between them. For example, multiple plug weld holes 202 are provided and arranged in a rectangular array on the second side 200b. Based on the vertical plate member 301, the thickness of the second side 200b can be increased, that is, the wall thickness of the lifting lug side frame can be strengthened, reducing fatigue damage to the steel material of the second side 200b. This plays a positive optimization role in terms of airtightness, damage, and stress of the frame member 200. (Continuing to refer to...) Figure 5The bending member 500 includes a first plate portion 500a and a second plate portion 500b. The first plate portion 500a is disposed perpendicular to the upright plate member 301, and has a first edge in the width direction that connects to the upright plate member 301 and a second edge that extends along the width direction of the frame member 200 and passes through the slot. Based on the extension design of the first plate portion 500a in the width direction of the frame member 200, the internal width direction strength of the frame member 200 can be strengthened. Under conditions such as compression or impact of a column on the battery pack, it can provide greater resistance to damage, thereby protecting the internal structure of the battery pack. Correspondingly, the second plate portion 500b extends from the second edge of the first plate portion 500a along the outer edge of the first side 200a. The wall extension is formed, that is, the outer wall of the second plate portion 500b and the first side 200a are attached together. That is, the bending position in the bending member 500 (i.e. the connection position of the first plate portion 500a and the second plate portion 500b) can be selected based on the actual size of the frame member 200, which can be applied to frame members 200 of various sizes. There is no need to re-open the mold. Only a reasonable bending path and bending head need to be planned, which can greatly reduce the mold opening cost. In some embodiments, the outer wall of the second plate portion 500b and the first side 200a are welded together (e.g., top seam weld), and the thickness of the second plate portion 500b (i.e. the overall thickness of the bending member 500) is greater than the thickness of the first side 200a, which can further improve the strength of the frame structure.

[0038] Reference Figure 6 During frame structure assembly, the upright plate component 301 and the bending component 500 are first welded together to form a reinforcing assembly. Then, the reinforcing assembly is inserted into the frame component 200 along its length, ensuring that the upright plate component 301 fits against the inner wall of the second side 200b and that the second plate body 500b fits against the outer wall of the first side wall. Finally, the upright plate component 301 is plugged through the plug welding hole 202, and the second plate body 500b and the first side 200a are top-seam welded, resulting in the final product as shown below. Figure 4 The border structure shown.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A battery pack housing frame structure, characterized in that, include: A border member (100) defines a hollow section (101) within it and has a first side (100a) and a second side (100b) in the width direction; And a reinforcing component configured to be inserted into the hollow interval (101) and comprising: The upright plate member (300) extends along the inner wall of the second side (100b) and is connected to the second side (100b); At least one horizontal plate member (400) is provided, which is angled to the vertical plate member (300), and one side edge of the horizontal plate member (400) in the width direction is connected to the vertical plate member (300), and the other side edge abuts against the inner wall of the first side (100a).

2. The battery pack housing frame structure according to claim 1, characterized in that: A plug welding hole (102) is provided on the second side (100b).

3. The battery pack housing frame structure according to claim 1, characterized in that: The horizontal plate component (400) is arranged perpendicular to the vertical plate component (300).

4. The battery pack housing frame structure according to claim 1, characterized in that: The thickness of the vertical plate component (300) is greater than the thickness of the second side (100b).

5. The battery pack housing frame structure according to claim 1, characterized in that: The horizontal plate members (400) are provided in multiple ways, and the multiple horizontal plate members (400) are spaced apart in the height direction of the frame member (100).

6. A battery pack housing frame structure, characterized in that, include: A frame member (200) has a first side (200a) and a second side (200b) in the width direction, and a slot extending along the length direction of the frame member (200) is formed on the first side (200a). and a reinforcing component, the reinforcing component comprising: The upright plate member (301) extends along the inner wall of the second side (200b) and is connected to the second side (200b); The bending member (500) includes a first plate portion (500a) and a second plate portion (500b). The first plate portion (500a) has a first edge and a second edge in the width direction. The first edge is connected to the upright plate member (301). The second edge extends along the width direction of the frame member (200) and passes through the slot. The second plate portion (500b) is formed by extending the second end of the first plate portion (500a) along the outer wall of the first side (200a).

7. The battery pack housing frame structure according to claim 6, characterized in that: A plug welding hole (202) is provided on the second side (200b).

8. The battery pack housing frame structure according to claim 7, characterized in that: The plug welding holes (202) are provided in multiple ways and arranged in a rectangular array on the second side (200b).

9. A battery pack housing frame structure according to claim 6, characterized in that: The outer wall of the first side (200a) and the second plate body (500b) are welded together.

10. A battery pack housing frame structure according to claim 6, characterized in that: The thickness of the second plate body (500b) is greater than the thickness of the first side (200a).

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