reinforcing device

Abstract

The utility model discloses a reinforcing device, including at least one set of connecting piece and reinforcing plate, crossbeam, stringer form cross -shaped welding place along diagonal line symmetry and insert at least one set of connecting piece, and the both ends of connecting piece are fixed in crossbeam and stringer respectively, and connecting piece, crossbeam and stringer mutually enclose and form triangular structure, and cross -shaped welding place sets up reinforcing plate, and reinforcing plate, connecting piece and cross -shaped welding place are mutually fixed connection. The utility model has the beneficial effects that: first, the side wall of the battery pack crossbeam and stringer is supported by the connecting piece, avoiding the bending of the battery pack crossbeam and stringer during use, which leads to the weld failure. Second, the top of the battery pack crossbeam and stringer is protected and supported by the reinforcing plate, increasing the double protection. The reinforcing plate, the stringer plate, the stringer and the crossbeam form an integral whole, greatly increasing the reliability of the connection.

Description

Technical Field

[0001] This utility model relates to the field of battery storage technology, and in particular to a strengthening device. Background Technology

[0002] According to the GB38031 standard "Safety Requirements for Power Batteries for Electric Vehicles" and the requirements of OEMs, mechanical performance tests such as vibration, impact, and simulated collisions are required for the battery pack system. The strength of the battery pack's casing structure, transverse and longitudinal beams, and their connections plays a decisive role in the overall rigidity of the pack. Currently, mainstream battery packs use only seam welding to connect the transverse and longitudinal beams. However, this single welding method often leads to weld failure due to factors such as welding quality and structural design.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0004] The technical problem to be solved by this utility model is to solve the problem that weld failure is easy to occur when single welding of crossbeams and longitudinal beams.

[0005] This utility model solves the above-mentioned technical problems through the following technical means:

[0006] This utility model claims a protective reinforcement device, including at least one set of connectors and a reinforcing plate; at least one set of connectors are symmetrically embedded along the diagonal at the cross-shaped weld joint formed by the cross beam and the longitudinal beam, with both ends of the connectors fixed to the cross beam and the longitudinal beam respectively, and the connectors, the cross beam and the longitudinal beam enclosing each other to form a triangular structure; a reinforcing plate is erected at the cross-shaped weld joint, and the reinforcing plate, the connectors and the cross-shaped weld joint are fixedly connected to each other.

[0007] Firstly, the connectors provide side wall support for the battery pack's crossbeams and longitudinal beams, preventing bending and weld failure during use. Secondly, the reinforcing plates protect and support the tops of the battery pack's crossbeams and longitudinal beams, providing double protection. The reinforcing plates, stiffeners, longitudinal beams, and crossbeams form a unified structure, greatly increasing the reliability of the connection.

[0008] Preferably, the connector includes stiffening plates, with the stiffening plates embedded in the cross-shaped weld joints. The stiffening plates are arranged at an incline with the crossbeams and longitudinal beams, and the stiffening plates, crossbeams, and longitudinal beams enclose each other to form a triangular structure.

[0009] Triangles provide stability and prevent beams and longitudinal beams from deforming and bending.

[0010] Preferably, the connector further includes a first connecting plate, with the first connecting plate extending along both ends of the stiffener. The first connecting plate is respectively attached to the side wall of the adjacent horizontal beam and the side wall of the longitudinal beam, and is connected to each other by a first mounting component.

[0011] The first connecting plate is attached to the side wall of the adjacent horizontal beam and the side wall of the longitudinal beam, increasing the protection and overall strength of the side walls of the horizontal beam and the longitudinal beam.

[0012] Preferably, the first mounting component is a first rivet, the first connecting plate passes through the first through hole, and the side walls of the crossbeam and the longitudinal beam are respectively provided with first rivet holes, and the first rivet passes through the first through hole and is riveted to the first rivet hole.

[0013] Riveting is more suitable for the above-mentioned connection methods because it can be applied to different materials and the connection points formed by riveting can provide high load-bearing capacity and tensile strength, resulting in strong connection stability.

[0014] Preferably, the connector further includes a second connecting plate, with the second connecting plate extending sequentially from the top of the first connecting plate away from the stiffener plate. The second connecting plate is perpendicular to the first connecting plate and fits against the top of the adjacent crossbeam and the top of the longitudinal beam, and is connected to each other by a second mounting member.

[0015] The second connecting plate is attached to the top of the adjacent crossbeam and the top of the longitudinal beam, increasing the protection and overall strength of the top of the crossbeam and the longitudinal beam.

[0016] Preferably, the second mounting component is a second rivet, the second connecting plate passes through the second through hole, and the top of the crossbeam and the top of the longitudinal beam are respectively provided with second rivet holes, and the second rivet passes through the second through hole and is riveted to the second rivet hole.

[0017] Similarly, rivet connections offer strong stability, making them more suitable for connecting the second connecting plate to the top of adjacent crossbeams and longitudinal beams.

[0018] Preferably, it also includes a fourth rivet, the reinforcing plate is an octagonal plate, the outer edge of the reinforcing plate is flush with the outer edge of the second connecting plate, the reinforcing plate passes through the fourth through hole, the longitudinal beam and the transverse beam are both provided with a fourth rivet hole, and the fourth rivet passes through the fourth through hole and is riveted to the fourth rivet hole.

[0019] The octagonal plate can fit well with the shape formed by the connectors, beams and longitudinal beams.

[0020] Preferably, the outer edge of the reinforcing plate is flush with the outer edge of the stiffening plate, and the stiffening plate and the reinforcing plate are connected to each other by a third mounting component.

[0021] Ensure that the outer edge of the reinforcing plate is flush with the outer edge of the stiffening plate to achieve a connection and fixation between the stiffening plate and the reinforcing plate.

[0022] Preferably, the third mounting component is a third rivet, the reinforcing plate passes through the third through hole, the stiffening plate is provided with a third rivet hole, and the third rivet passes through the third through hole and is riveted to the third rivet hole.

[0023] Similarly, rivet connections offer strong stability, making them more suitable for connecting reinforcing plates and stiffening plates.

[0024] Preferably, the connector is a one-piece molded structure.

[0025] Since the connectors mainly serve to support the crossbeams and longitudinal beams, they need to have a certain strength. Therefore, the connectors are preferably integrally molded. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the reinforcing device of this utility model;

[0027] Figure 2 This is a schematic diagram of the reinforcing device of this utility model without the reinforcing plate;

[0028] Figure 3 This is a structural schematic diagram of the connector of this utility model;

[0029] Figure 4 This is a structural schematic diagram of the reinforcing plate of this utility model.

[0030] 1. Connector; 10. Rib plate; 11. First connecting plate; 12. Second connecting plate; 2. Reinforcing plate; 3. First rivet; 4. Second rivet; 5. Third rivet; 6. Fourth rivet. Detailed Implementation

[0031] 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.

[0032] See Figure 1 This utility model claims a protective reinforcement device, including two sets of connectors 1 and a reinforcing plate 2; the cross-shaped weld joint formed by the cross beam and the longitudinal beam is symmetrically embedded with two sets of connectors 1 along the diagonal. The cross-shaped weld joint refers to the cross beam and at least two longitudinal beams being placed vertically and welded at the joint of the cross beam and the longitudinal beam to form a cross-shaped beam frame structure. This utility model enhances the stability and strength of the beam frame by setting a reinforcement device at the beam frame.

[0033] Two sets of connector 1 refer to four connector 1. Therefore, one set of connector 1 consists of two connectors 1. The two connectors 1 are symmetrically embedded in the cross-shaped welding joint along the diagonal, and the four connectors 1 are embedded in the four corners of the cross-shaped welding joint respectively.

[0034] The number of connectors 1 is not limited to two sets, but can also be one set. However, it is essential to ensure that the set of connectors 1 is arranged diagonally symmetrically. The purpose is to ensure that the ends of the set of connectors 1 are connected to the crossbeam and the longitudinal beam respectively.

[0035] See Figure 2 and Figure 3 The connector 1 includes a stiffening plate 10, a first connecting plate 11, and a second connecting plate 12. Since the connector 1 mainly supports the crossbeams and longitudinal beams, it needs to have a certain strength. Therefore, the connector 1 is preferably integrally formed. Specifically, the stiffening plate 10 is embedded in the cross-shaped weld joint. The stiffening plate 10 is arranged at an inclination with the crossbeams and longitudinal beams, and the stiffening plate 10, the crossbeams, and the longitudinal beams enclose each other to form a triangular structure.

[0036] The inclined arrangement means that the stiffening plate 10 forms an angle with the crossbeam and the longitudinal beam, preferably 45 degrees. At this time, the stiffening plate 10 forms an isosceles right triangle with the crossbeam and the longitudinal beam, which is balanced in force and has high stability.

[0037] A reinforcing plate 2 is installed at the cross-shaped weld joint, and the reinforcing plate 2, the connector 1, and the cross-shaped weld joint are fixedly connected to each other.

[0038] Both ends of the stiffening plate 10 are provided with first connecting plates 11 extending longitudinally. The first connecting plates 11 are respectively attached to the side walls of the adjacent horizontal beam and the side walls of the longitudinal beam, and are connected to each other by a first mounting component. Specifically, the first mounting component is a first rivet 3. The first connecting plate 11 passes through the first through hole, and the side walls of the horizontal beam and the longitudinal beam are respectively provided with first rivet holes. The first rivet 3 passes through the first through hole and is riveted to the first rivet hole.

[0039] The second connecting plate 12 is arranged sequentially from the top of the first connecting plate 11 away from the stiffening plate 10. The second connecting plate 12 is perpendicular to the first connecting plate 11. The second connecting plate 12 is attached to the top of the adjacent crossbeam and the top of the longitudinal beam, and is connected to each other by a second mounting component. Specifically, the second mounting component is a second rivet 4. The second connecting plate 12 passes through the second through hole. The top of the crossbeam and the top of the longitudinal beam are respectively opened with second rivet holes. The second rivet 4 passes through the second through hole and is riveted to the second rivet hole.

[0040] By setting the first connecting plate 11 and the second connecting plate 12, the side walls and top of the crossbeams and longitudinal beams can be attached, thereby enhancing the overall strength of the crossbeams and longitudinal beams.

[0041] In fact, the second mounting part and the first mounting part can also be connected by bolts and screw holes, but the riveting connection is more suitable for the above connection method because it can be used for different materials and the connection point formed by riveting can provide higher load-bearing capacity and tensile strength, and the connection is more stable.

[0042] Because connector 1 is embedded diagonally and symmetrically in a cross-shaped weld, it not only occupies a small area and does not interfere with the layout of the object or require additional space, but also provides stable support for adjacent crossbeams and longitudinal beams, preventing bending and weld failure during use. Combined with the second and first mounting components, the crossbeams, longitudinal beams, and connector 1 form a stable whole, achieving three benefits in one go.

[0043] See Figure 4 The reinforcing plate 2 is an octagonal plate. The outer edge of the reinforcing plate 2 is flush with the outer edge of the stiffening plate 10. The stiffening plate 10 and the reinforcing plate 2 are connected to each other by a third mounting component. Specifically, the third mounting component is a third rivet 5. The reinforcing plate 2 passes through the third through hole, and the stiffening plate 10 is provided with a third rivet hole. The third rivet 5 passes through the third through hole and is riveted to the third rivet hole.

[0044] The outer edge of the reinforcing plate 2 is flush with the outer edge of the second connecting plate 12. The reinforcing plate 2 passes through the fourth through hole. The longitudinal beam and the transverse beam are both provided with the fourth rivet hole. The fourth rivet 6 passes through the fourth through hole and is riveted to the fourth rivet hole.

[0045] Similarly, the connection between the reinforcing plate 2 and the stiffening plate 10, the crossbeam, and the third mounting component connection include, but are not limited to, riveting. They can also be set as bolt or snap-fit ​​connections. However, since riveting has high connection stability, rivet connection is preferred.

[0046] By setting up connector 1 and reinforcing plate 2, the top and sides of the crossbeam and longitudinal beam are covered and protected. Then, the third rivet 5 is used to fix the stiffening plate 10 and reinforcing plate 2, and the fourth rivet 6 is used to fix the longitudinal beam, crossbeam and reinforcing plate 2. This makes the reinforcing plate 2, stiffening plate 10, longitudinal beam and crossbeam form a whole, which greatly increases the reliability of the connection.

[0047] The process of using this reinforcing device to fix the crossbeams and longitudinal beams of the battery pack housing is as follows:

[0048] First, weld the crossbeams and longitudinal beams. Place the crossbeams and at least two longitudinal beams vertically and weld them at the joints to form a cross-shaped beam frame structure.

[0049] Next, install the connector 1, embed the four connectors 1 into the four corners of the beam frame respectively, and fix the first connecting plate 11 and the side wall of the adjacent crossbeam and the side wall of the longitudinal beam in sequence by rivets, and the second connecting plate 12 and the top of the adjacent crossbeam and the top of the longitudinal beam.

[0050] Finally, install the reinforcing plate 2, place the reinforcing plate 2 on the beam frame, ensuring that the outer edge of the reinforcing plate 2 is flush with the outer edge of the stiffening plate 10 and the outer edge of the second connecting plate 12. Then, fix the reinforcing plate 2 to the stiffening plate 10, the reinforcing plate 2 to the longitudinal beam and the transverse beam in sequence with rivets.

[0051] After installation, the reinforcement device serves two purposes: firstly, connector 1 supports the side walls of the battery pack's crossbeams and longitudinal beams, preventing bending and weld failure during use; secondly, the reinforcing plate 2 protects and supports the tops of the battery pack's crossbeams and longitudinal beams, providing double protection. Combined with the various rivet connections, the reinforcing plate 2, stiffening plate 10, longitudinal beams, and crossbeams form a unified whole, greatly increasing the reliability of the connection.

[0052] 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 strengthening device, characterized in that, It includes at least one set of connectors (1) and reinforcing plates (2); at least one set of connectors (1) are symmetrically embedded along the diagonal at the cross-shaped weld joint formed by the cross beam and the longitudinal beam, and the two ends of the connectors (1) are fixed to the cross beam and the longitudinal beam respectively. The connectors (1), the cross beam and the longitudinal beam enclose each other to form a triangular structure; a reinforcing plate (2) is erected at the cross-shaped weld joint, and the reinforcing plate (2), the connectors (1) and the cross-shaped weld joint are fixedly connected to each other.

2. The strengthening device according to claim 1, characterized in that, The connector (1) includes a stiffener (10), with a cross-shaped welded joint embedded in the stiffener (10). The stiffener (10) is arranged at an inclination with the crossbeam and the longitudinal beam, and the stiffener (10), the crossbeam and the longitudinal beam enclose each other to form a triangular structure.

3. The strengthening device according to claim 1, characterized in that, The connector (1) also includes a first connecting plate (11). The first connecting plate (11) is provided at both ends of the stiffener (10). The first connecting plate (11) is attached to the side wall of the adjacent horizontal beam and the side wall of the longitudinal beam respectively, and is connected to each other through the first mounting component.

4. The strengthening device according to claim 3, characterized in that, The first mounting component is the first rivet (3), the first connecting plate (11) passes through the first through hole, and the side wall of the cross beam and the side wall of the longitudinal beam are respectively opened with the first rivet hole. The first rivet (3) passes through the first through hole and is riveted to the first rivet hole.

5. The reinforcing device according to claim 3, characterized in that, The connector (1) also includes a second connecting plate (12). The second connecting plate (12) is arranged on the top of the first connecting plate (11) in a direction away from the stiffener (10). The second connecting plate (12) is perpendicular to the first connecting plate (11). The second connecting plate (12) is attached to the top of the adjacent crossbeam and the top of the longitudinal beam, and is connected to each other by a second mounting member.

6. The reinforcing device according to claim 5, characterized in that, The second mounting component is the second rivet (4), the second connecting plate (12) passes through the second through hole, and the top of the crossbeam and the top of the longitudinal beam are respectively opened with second rivet holes. The second rivet (4) passes through the second through hole and is riveted to the second rivet hole.

7. The reinforcing device according to claim 5, characterized in that, It also includes a fourth rivet (6), the reinforcing plate (2) is an octagonal plate, the outer edge of the reinforcing plate (2) is flush with the outer edge of the second connecting plate (12), the reinforcing plate (2) passes through the fourth through hole, the longitudinal beam and the transverse beam are both provided with a fourth rivet hole, and the fourth rivet (6) passes through the fourth through hole and is riveted to the fourth rivet hole.

8. The strengthening device according to claim 2, characterized in that, The outer edge of the reinforcing plate (2) is flush with the outer edge of the stiffening plate (10), and the stiffening plate (10) and the reinforcing plate (2) are connected to each other by a third mounting component.

9. The reinforcing device according to claim 8, characterized in that, The third mounting component is the third rivet (5), the reinforcing plate (2) passes through the third through hole, the stiffening plate (10) is provided with the third rivet hole, and the third rivet (5) passes through the third through hole and is riveted to the third rivet hole.

10. The strengthening device according to claim 1, characterized in that, The connector (1) is a one-piece molded structure.

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