Integrated adapter plate reinforced beam and frame structure for battery pack

Abstract

This utility model discloses an integrated adapter plate structure for reinforcing the crossbeam and frame of a battery pack. The structure includes a frame and a crossbeam, which are fixedly connected by an integrated adapter plate. One side of the integrated adapter plate is fitted to the frame and fastened to it with fasteners, while the other side is welded to the crossbeam. Using an integrated adapter plate to connect the frame and crossbeam avoids direct welding between the crossbeam and the frame, thereby improving the connection strength between the crossbeam and the frame and reducing the risk of vibration failure caused by direct welding.

Description

Technical Field

[0001] This utility model relates to the field of power battery pack design technology for new energy vehicles, and specifically provides an integrated adapter plate to strengthen the crossbeam and frame structure of the battery pack. Background Technology

[0002] my country's research and verification of the reliability and safety of power battery packs for new energy vehicles are among the world's best. The "GB 38031-2020 Safety Requirements for Power Batteries for Electric Vehicles" stipulates that after a vibration test, the battery pack should show no leakage, casing rupture, fire, or explosion. Most automakers also require that after the battery pack vibration test, there should be no casing rupture upon disassembly.

[0003] Whether using aluminum or steel frame structures, the crossbeams play a crucial role in enhancing the overall rigidity and strength of the enclosure. Among enclosure failures, weld failures between the crossbeams and the frame account for a significant proportion. These weld failures are caused by two main factors: firstly, the quality of the welds; and secondly, inadequate design, where stress concentration occurs at the connection point due to the transmission of force from the frame to the crossbeam during vibration, resulting in weld failure.

[0004] Utility model patent application CN202020515021.8 discloses a battery tray and battery pack, in which the triangular bracing reinforcement of the crossbeam and frame is made of aluminum and is used for aluminum profile housings; its application to steel housings is not described. Furthermore, utility model patent application CN202122706386.6 discloses a housing and battery pack, in which the crossbeam and frame are reinforced with bent parts, resulting in weaker reinforcement.

[0005] Strengthening the crossbeams and frame structure of the battery pack, reducing the risk of welding failure of the crossbeams and frame, and improving the safety and reliability of the battery pack have become increasingly urgent technical problems to be solved. Utility Model Content

[0006] To address the aforementioned issues, this utility model provides an integrated adapter plate structure for reinforcing the crossbeams and frame of the battery pack, which is low in cost and improves the reliability and safety of the battery pack.

[0007] The purpose of this utility model is to provide an integrated adapter plate for reinforcing the crossbeam and frame structure of a battery pack, including a frame and a crossbeam, wherein the frame and the crossbeam are fixedly connected by an integrated adapter plate.

[0008] One side of the integrated adapter plate is fitted to the frame and fastened to the frame by fasteners, while the other side is fastened to the crossbeam by welding.

[0009] Furthermore, the integrated adapter plate includes a first connection area, a second connection area, and a third connection area arranged side by side in sequence, wherein,

[0010] The second connection area is fastened to the crossbeam;

[0011] The first and second connection areas are used for fastening the connection to the frame.

[0012] Furthermore, the second connection area is fastened to the crossbeam by welding.

[0013] Furthermore, the welding process employs MIG welding.

[0014] Furthermore, both the first connection area and the second connection area are provided with at least one first connection hole, which is used to fasten the connection to the frame by fasteners.

[0015] Furthermore, the fastener is a rivet.

[0016] Furthermore, the integrated adapter plate can be used for battery packs with aluminum profile enclosures and battery packs with steel enclosures.

[0017] Furthermore, in application, the first step is to connect the integrated adapter plate to the frame of the battery pack using rivets; the second step is to position the crossbeam of the battery pack and then weld it to the integrated adapter plate.

[0018] This invention employs an integrated adapter plate to connect the frame and crossbeam separately via riveting and welding, avoiding direct welding between the crossbeam and the frame. This improves the connection strength between the crossbeam and the frame and reduces the risk of vibration failure caused by direct welding. Furthermore, the reinforced structure is easy to assemble and disassemble. The application of this split-type reinforcement structure significantly reduces stress, and combined with actual vibration effects, the pass rate is significantly increased. Therefore, the cost of this reinforcement structure is low, and the benefits far outweigh the increased cost, improving the reliability and safety of the battery pack. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is an isometric perspective view of the integrated adapter plate in this embodiment of the utility model;

[0021] Figure 2This is a partially enlarged schematic diagram of the integrated adapter plate, frame, and crossbeam in the engagement state at connection position I in this embodiment of the present invention.

[0022] The labels for the attached figures are as follows: 1-frame; 2-beam; 3-integrated adapter plate; 4-rivet. Detailed Implementation

[0023] 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 with reference to the accompanying drawings. 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.

[0024] like Figure 1 As shown in the illustration, this utility model embodiment introduces an integrated adapter plate structure for reinforcing the crossbeam and frame of a battery pack. The structure includes a frame and a crossbeam, which are fixedly connected by an integrated adapter plate. One side of the integrated adapter plate is fitted to the frame and fastened to it with fasteners, while the other side is welded to the crossbeam. Using an integrated adapter plate to connect the frame and crossbeam avoids direct welding between the crossbeam and the frame, thereby improving the connection strength between the crossbeam and the frame and reducing the risk of vibration failure caused by direct welding. Furthermore, the integrated adapter plate is easy to assemble and disassemble. The application of this split-type reinforcement structure significantly reduces stress, and combined with actual vibration effects, the pass rate is significantly increased. Therefore, the integrated adapter plate has a lower cost, and the benefits far outweigh the increased cost, improving the reliability and safety of the battery pack.

[0025] Specifically, such as Figure 1 , 2 As shown, the integrated adapter plate reinforces the crossbeam and frame structure of the battery pack, including a frame 1, a crossbeam 2, and an integrated adapter plate 3. The integrated adapter plate 3 has a first connecting area, a second connecting area, and a third connecting area arranged side-by-side. The second connecting area is used for fastening to the crossbeam 2 by welding, specifically using a MIG welding process. Both the first and third connecting areas have at least one first connecting hole, which is used for fastening to the frame using fasteners. Specifically, the area where the crossbeam 2 connects to the integrated adapter plate 3 extends vertically and vertically to the edge of the integrated adapter plate 3, forming the second connecting area. The two sides of the second connecting area are the first connecting area and the third connecting area, respectively. Figure 2The integrated adapter plate has a first connection area on the left side of one end of the crossbeam and a third connection area on the right side of one end of the crossbeam. An example is shown below. Figure 2 In the first and third connection areas, there are 6 first connection holes, but it is not limited to this and can be adjusted according to the application.

[0026] In this embodiment of the utility model, the fastener is a rivet 4, so that the embedded integrated reinforcing structure 3 is riveted to the frame 1 through the first connecting holes in the first connecting area and the third connecting area, respectively. Specifically, the installation process includes the following steps: First, the integrated adapter plate 3 is connected to the left and right frames 1 of the battery pack through the rivets 4; second, the battery pack crossbeam 2 is positioned and then connected to the integrated adapter plate 3 through welding. The aforementioned integrated adapter plate can be used for battery packs with aluminum profile housings and battery packs with steel housings. By using an integrated adapter plate to connect the frame and crossbeam through riveting and welding, direct welding between the crossbeam and the frame is avoided, thereby improving the connection strength between the crossbeam and the frame and reducing the risk of vibration failure caused by direct welding between the frame and the crossbeam.

[0027] Although the present invention 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; and these 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 the present invention.

Claims

1. An integrated adapter plate reinforced beam and frame structure for a battery pack, characterized by, Includes a frame and crossbeams, which are fixedly connected by an integrated adapter plate. One side of the integrated adapter plate is fitted to the frame and fastened to the frame by fasteners, while the other side is fastened to the crossbeam by welding.

2. The integrated adapter plate reinforced beam and frame structure for battery packs according to claim 1, characterized in that, The integrated adapter plate includes a first connection area, a second connection area, and a third connection area arranged side by side in sequence, wherein... The second connection area is fastened to the crossbeam; The first and second connection areas are used for fastening the connection to the frame.

3. The one-piece adapter plate reinforced battery pack beam and rim structure of claim 2, wherein, The second connection area is fastened to the crossbeam by welding.

4. The one-piece adapter plate reinforced battery pack beam and rim structure of claim 3, wherein, The welding process used is MIG welding.

5. The one-piece adapter plate reinforced battery pack beam and rim structure of claim 2, wherein, Both the first connection area and the second connection area are provided with at least one first connection hole, which is used to fasten the connection to the frame by fasteners.

6. The one-piece adapter plate reinforced battery pack beam and rim structure of claim 5, wherein, The fastener is a rivet.

7. The integrated adapter plate reinforced beam and frame structure for battery packs according to any one of claims 1-6, characterized in that, The integrated adapter plate can be used for battery packs with aluminum profile enclosures and battery packs with steel enclosures.

8. The one-piece adapter plate reinforced battery pack beam and rim structure of claim 7, wherein, When applying it, the first step is to connect the integrated adapter plate to the frame of the battery pack using rivets; the second step is to position the crossbeam of the battery pack and then weld it to the integrated adapter plate.

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