Battery pack box body frame reinforcing structure

Abstract

The utility model discloses a battery pack box body frame reinforcing structure, which relates to the field of power storage battery packs, and comprises a frame, a reinforcing piece and a lifting lug, the reinforcing piece is arranged in the frame, the reinforcing piece comprises at least two vertical surfaces respectively contacted with the inner side surfaces of the two sides of the frame and a transverse surface connected between the two adjacent vertical surfaces, the lifting lug is fixedly connected to the position, corresponding to one vertical face, of the outer side face of the frame. Compared with the prior art, the battery pack frame has the advantages that the transverse surfaces are equivalent to adding transverse ribs in the frame and can resist Y-direction extrusion, column collision and other destructive working conditions of the battery pack, so that the internal space of the battery pack is protected, the risk of fire and explosion is reduced, the vertical surfaces increase the wall thickness of the connecting positions of the lifting lugs, the reinforcers improve the rigidity and strength of the frame, and the service life of the frame is prolonged. Therefore, the deformation resistance and damage resistance of the battery pack are improved.

Description

Technical Field

[0001] This utility model relates to the field of power battery packs, and in particular to a reinforced frame structure for a battery pack housing. Background Technology

[0002] With the development of economy and technology, new energy vehicles have become a prominent emerging industry in the automotive sector. They not only meet people's pursuit of energy conservation and environmental protection but also reduce the cost of using gasoline vehicles. Currently, there are 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 its cost is higher. Steel housings are cheaper and used in some cases, but unlike aluminum housings, they cannot have the complex diagonal ribs constructed inside the cavity. Currently, the rigidity and strength of the lifting lugs on the frame of steel battery pack housings are insufficient, resulting in poor resistance to deformation and damage. Utility Model Content

[0003] The technical problem to be solved by this utility model is how to improve the rigidity and strength of the steel battery pack frame.

[0004] This utility model solves the above-mentioned technical problems through the following technical means: a battery pack box frame reinforcement structure, including a frame, a reinforcing member and a lifting lug, wherein the reinforcing member is disposed inside the frame, and the reinforcing member includes at least two vertical surfaces that respectively contact the inner sides of the two sides of the frame and a horizontal surface that connects the two adjacent vertical surfaces, and the lifting lug is fixedly connected to the outer side of the frame at a position corresponding to one of the vertical surfaces.

[0005] Since the horizontal surface is equivalent to adding horizontal ribs inside the frame, it can resist destructive conditions such as Y-axis compression and column impact of the battery pack, thereby protecting the internal space of the battery pack and reducing the risk of fire and explosion. Furthermore, the vertical surface increases the wall thickness at the connection position of the lifting lugs. Therefore, the reinforcing component improves the rigidity and strength of the frame, thereby improving the battery pack's resistance to deformation and damage.

[0006] Preferably, the reinforcing member is a bent structure.

[0007] The bending structure requires no mold, making it easy to process and cost-effective.

[0008] Preferably, the reinforcing member has a non-enclosed structure.

[0009] The open structure reduces resistance when the reinforcement is inserted into the frame.

[0010] Preferably, the horizontal surface is located at the center position in the Z direction inside the frame or on both sides of the center position in the Z direction, and the vertical surface has the same length on both sides in the Z direction.

[0011] The structure is symmetrical, resulting in good reinforcement.

[0012] Preferably, the reinforcing member has an N-shaped structure, including two vertical surfaces and one horizontal surface, with the two vertical surfaces respectively contacting the upper part of the inner side of one side and the lower part of the inner side of the other side of the frame.

[0013] It is suitable for situations where the lifting lugs are installed on the upper or lower part of the frame, and only two bending corners are needed to form it, making it easy to process.

[0014] Preferably, the reinforcing member has a U-shaped structure, including three vertical surfaces and two horizontal surfaces, with the three vertical surfaces respectively contacting the middle of the inner side of one side of the frame and the upper and lower parts of the inner side of the other side.

[0015] It is suitable for situations where the lifting lugs are installed on the upper, middle or lower part of the frame, and only requires four bends to form, making it easy to process.

[0016] Preferably, bolt holes are provided on the top and bottom surfaces of the frame, and gaps are provided between the horizontal surface and the top and bottom surfaces of the frame.

[0017] When the frame is fixed to other structures of the battery pack with bolts, the horizontal surface will not interfere with the bolts.

[0018] Preferably, plug welding holes are provided on both sides of the frame corresponding to the positions of each vertical surface.

[0019] The frame is connected to each vertical surface by plug welding, and the plug welding holes facilitate welding positioning.

[0020] Preferably, the lug has a U-shaped structure, and its two legs are welded to the frame.

[0021] The plug welding position of the reinforcement can be avoided.

[0022] Preferably, a sleeve is fixed through the lifting lug.

[0023] The sleeve facilitates the connection of lifting tools. Attached Figure Description

[0024] Figure 1 This is a front view schematic diagram of the battery pack box frame reinforcement structure according to Embodiment 1 of this utility model.

[0025] Figure 2 This is an isometric schematic diagram of the battery pack housing frame reinforcement structure according to Embodiment 1 of this utility model.

[0026] Figure 3 This is a front view schematic diagram of the battery pack box frame reinforcement structure according to Embodiment 2 of this utility model.

[0027] Figure 4This is an isometric schematic diagram of the battery pack box frame reinforcement structure according to Embodiment 2 of this utility model.

[0028] Figure 5 This is a front view schematic diagram of the battery pack box frame reinforcement structure according to Embodiment 3 of this utility model.

[0029] Figure 6 This is an isometric schematic diagram of the battery pack box frame reinforcement structure according to Embodiment 3 of this utility model.

[0030] Figure 7 This is a front view schematic diagram of the battery pack box frame reinforcement structure according to Embodiment 4 of this utility model.

[0031] Figure 8 This is an isometric schematic diagram of the battery pack box frame reinforcement structure of Embodiment 4 of this utility model.

[0032] Figure 9 This is a front view schematic diagram of the battery pack box frame reinforcement structure according to Embodiment 5 of this utility model.

[0033] Figure 10 This is an isometric schematic diagram of the battery pack box frame reinforcement structure of Embodiment 5 of this utility model. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] Example 1

[0036] like Figure 1 , Figure 2 As shown, this embodiment discloses a battery pack housing frame reinforcement structure, including a frame 1, a reinforcing member 2, a lifting lug 3, a sleeve 4, a plug welding hole 5, and a bolt hole 6.

[0037] The frame 1, reinforcing member 2, and lifting lug 3 are all made of steel. The reinforcing member 2 is located inside the frame 1 and includes at least two vertical surfaces that contact the inner sides of the two sides of the frame 1 respectively and a horizontal surface that connects the two adjacent vertical surfaces. The lifting lug 3 is fixedly connected to the outer side of the frame 1 at the position corresponding to one of the vertical surfaces. Since the horizontal surface is equivalent to adding a horizontal rib inside the frame 1, it can resist destructive conditions such as Y-axis compression and column impact of the battery pack, thereby protecting the internal space of the battery pack and reducing the risk of fire and explosion. In addition, the vertical surface increases the wall thickness at the connection position of the lifting lug 3. Therefore, the reinforcing member 2 improves the rigidity and strength of the frame 1, thereby improving the battery pack's resistance to deformation and damage.

[0038] The reinforcing member 2 is a non-enclosed bending structure. The bending structure does not require mold opening, which is convenient for processing and has low cost. The non-enclosed structure makes the resistance smaller when the reinforcing member 2 is inserted into the frame 1.

[0039] The reinforcing member 2 can be flexibly selected as an N-shaped structure or a Z-shaped structure depending on the size of the internal space of the frame 1. In this embodiment, the internal space of the frame 1 is relatively small, so the reinforcing member 2 is an N-shaped structure, including two vertical surfaces and one horizontal surface. The two vertical surfaces respectively contact the upper part of one inner side and the lower part of the other inner side of the frame 1. The N-shaped structure is suitable for situations where the lifting lug 3 is installed on the upper or lower part of the frame 1. It only requires two bending corners to form, which is convenient for processing.

[0040] The reinforcing member 2 can be flexibly installed in different directions according to the Z-axis installation height of the lifting lug 3. In this embodiment, the lifting lug 3 is installed on the upper part of the frame 1, so the vertical surface of the reinforcing member 2 on the side closer to the inside of the box contacts the lower part of the inner side of the frame 1, and the vertical surface on the side closer to the outside of the box contacts the upper part of the inner side of the frame 1.

[0041] The horizontal surface of the reinforcing member 2 is located at the center of the Z direction inside the frame 1 or on both sides of the Z direction center. The vertical surface has the same length on both sides of the Z direction, resulting in a symmetrical structure and good reinforcement effect. The height of the vertical surface is not limited and can be flexibly adjusted according to the installation height of the lifting lug.

[0042] Each vertical surface of the reinforcing member 2 is provided with a plug welding hole 5 on both sides of the frame 1. The frame 1 is connected to each vertical surface by plug welding. The plug welding hole 5 facilitates welding positioning.

[0043] Bolt holes 6 are provided on the top and bottom surfaces of the frame 1. The horizontal surface of the reinforcing member 2 has gaps with the top and bottom surfaces of the frame 1. When the frame 1 is fixedly connected to other structures of the battery pack by bolts, the horizontal surface will not interfere with the bolts.

[0044] The lifting lug 3 has a Z-shaped structure, and its two legs are welded to the frame 1, which can avoid the plug welding position of the reinforcing member 2.

[0045] A sleeve 4 is fixed through the lifting lug 3, which facilitates the connection of lifting tools.

[0046] The working principle is to insert the reinforcing member 2 into the frame 1 according to the position of one of the vertical reinforcing lugs 3, and then connect the reinforcing member 2 and the frame 1 by plug welding through the plug welding hole 5.

[0047] Example 2

[0048] like Figure 3 , Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that:

[0049] In this embodiment, the lifting lug 3 is installed at the lower part of the frame 1, so the vertical surface of the reinforcing member 2 on the side near the inside of the box contacts the upper part of the inner side of the frame 1, and the vertical surface on the side near the outside of the box contacts the lower part of the inner side of the frame 1.

[0050] Example 3

[0051] like Figure 5 , Figure 6 As shown, the difference between this embodiment and Embodiment 1 is that:

[0052] In this embodiment, the internal space of the frame 1 is relatively large, so the reinforcing member 2 is a Z-shaped structure, including three vertical surfaces and two horizontal surfaces. The three vertical surfaces respectively contact the middle of one inner side of the frame 1 and the upper and lower parts of the other inner side. The Z-shaped structure is suitable for situations where the hanging lug 3 is installed on the upper, middle or lower part of the frame 1. It only requires four bending corners to form, which is convenient for processing.

[0053] In this embodiment, the lifting lug 3 is installed on the upper part of the frame 1, so the vertical surface of the reinforcing member 2 near the inside of the box contacts the middle of the inner side of the frame 1, and the two vertical surfaces near the outside of the box contact the upper and lower parts of the inner side of the frame 1 respectively.

[0054] Example 4

[0055] like Figure 7 , Figure 8 As shown, the difference between this embodiment and Embodiment 3 is that:

[0056] In this embodiment, the lifting lug 3 is installed in the middle of the frame 1, so the two vertical surfaces of the reinforcing member 2 near the inside of the box contact the upper and lower parts of the inner side of the frame 1 respectively, and the vertical surface near the outside of the box contacts the middle part of the inner side of the frame 1.

[0057] Example 5

[0058] like Figure 9 , Figure 10 As shown, the difference between this embodiment and Embodiment 3 is that:

[0059] In this embodiment, the lifting lug 3 is installed on the lower part of the frame 1.

[0060] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A battery pack case frame reinforcement structure, characterized by: The device includes a frame, a reinforcing member, and a lifting lug. The reinforcing member is disposed inside the frame and includes at least two vertical surfaces that respectively contact the inner sides of the two sides of the frame and a horizontal surface that connects the two adjacent vertical surfaces. The lifting lug is fixedly connected to the outer side of the frame at a position corresponding to one of the vertical surfaces.

2. The battery pack case frame reinforcement structure of claim 1, wherein: The reinforcing member has a bent structure.

3. The battery pack case frame reinforcement structure of claim 1, wherein: The reinforcing member has a non-enclosed structure.

4. The battery pack case frame reinforcement structure of claim 1, wherein: The horizontal surface is located at the center position in the Z direction inside the frame or on both sides of the center position in the Z direction, and the vertical surface has the same length on both sides in the Z direction.

5. The battery pack case frame reinforcement structure of claim 1, wherein: The reinforcing member has an N-shaped structure, including two vertical surfaces and one horizontal surface. The two vertical surfaces respectively contact the upper part of the inner side of one side and the lower part of the inner side of the other side of the frame.

6. The battery pack case frame reinforcement structure of claim 1, wherein: The reinforcing member has a U-shaped structure, including three vertical surfaces and two horizontal surfaces. The three vertical surfaces respectively contact the middle of the inner side of one side of the frame and the upper and lower parts of the inner side of the other side.

7. The battery pack case frame reinforcement structure of claim 1, wherein: Bolt holes are provided on the top and bottom surfaces of the frame, and there are gaps between the horizontal surface and the top and bottom surfaces of the frame.

8. The battery pack case frame reinforcement structure of claim 1, wherein: The frame has plug welding holes on both sides corresponding to the vertical surfaces.

9. The battery pack case frame reinforcement structure of claim 8, wherein: The lugs have a U-shaped structure, and their two feet are welded to the frame.

10. The battery pack case frame reinforcement structure of claim 1, wherein: A sleeve is fixed through the lifting lug.

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