Aluminum alloy longitudinal beam casting for new energy vehicle

Abstract

The utility model discloses a new energy automobile aluminum alloy stringer casting piece relates to automobile casting technical field, including upper channel beam and lower channel beam, upper channel beam and lower channel beam junction weld, the inner wall of upper channel beam and lower channel beam is equipped with two reinforcing bars, and two reinforcing bars are parallelly arranged and are prolonged along the length direction of upper channel beam / lower channel beam, the stringer casting piece still includes a plurality of support subassembly, and support subassembly distributes at the different position inside stringer casting piece along the length direction of stringer casting piece, and support subassembly includes upper support plate and lower support plate, and the both sides of upper support plate are equipped with upper inclined plate, and the both sides of lower support plate are equipped with lower inclined plate, and upper inclined plate and the reinforcing bar of upper channel beam slide and connect, the utility model discloses support subassembly distributes at the different position inside stringer casting piece along the length direction of stringer casting piece, and the key stress area is reinforced, compares the structure of traditional internal whole reinforcing beam, and the overall weight is greatly reduced, and simultaneously still can guarantee the strength of key stress area.

Description

Technical Field

[0001] This utility model relates to the field of automotive casting technology, and more specifically to an aluminum alloy longitudinal beam casting for new energy vehicles. Background Technology

[0002] The longitudinal beams of new energy vehicles are one of the core components of the vehicle frame, mainly responsible for load transfer, collision energy absorption, and body rigidity support. Compared with traditional fuel vehicles, new energy vehicles, due to the heavy battery packs they carry, have more stringent requirements for the structural strength, collision safety (especially preventing battery crushing), and lightweighting of the longitudinal beams.

[0003] Traditional longitudinal beams use a square channel beam structure. Some key areas of the longitudinal beam require special reinforcement. In order to improve the strength of the longitudinal beam, the traditional method is to add a whole reinforcing structure inside the square channel beam structure. The length of the reinforcing structure generally needs to be the same as the length of the longitudinal beam, which leads to an increase in overall weight. Moreover, due to space constraints, the reinforcing structure located inside the longitudinal beam cannot be welded to the longitudinal beam. Therefore, it is necessary to improve the structure. Utility Model Content

[0004] The purpose of this utility model is to provide an aluminum alloy longitudinal beam casting for new energy vehicles in order to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] A casting of aluminum alloy longitudinal beam for new energy vehicles includes an upper channel beam and a lower channel beam. The upper channel beam and the lower channel beam are welded together. The inner walls of the upper channel beam and the lower channel beam are provided with two reinforcing ribs. The two reinforcing ribs are arranged in parallel and extend along the length direction of the upper channel beam / lower channel beam.

[0007] The longitudinal beam casting also includes multiple support components, which are distributed at different positions inside the longitudinal beam casting along the length of the longitudinal beam casting. Each support component includes an upper support plate and a lower support plate. The upper support plate has upper inclined plates on both sides, and the lower support plate has lower inclined plates on both sides. The upper inclined plates are slidably connected to the reinforcing ribs of the upper channel beam, and the lower inclined plates are slidably connected to the reinforcing ribs of the lower channel beam.

[0008] After the upper and lower channel beams are welded, the upper support plate and the lower support plate are in close contact.

[0009] The reinforcing rib has inner grooves on both sides, which are arc-shaped transition grooves that are deeper in the middle and shallower on both sides. Both the upper and lower inclined plates have connecting parts that slide into the inner grooves. There are three welding zones (Q, W, and E) between the connecting parts and the grooves. When the support assembly is installed in the designated position, it needs to be fixed in position by welding. Multiple welding zones are set to increase the connection strength.

[0010] In the three welding zones Q, W, and E, the gap between the connecting part and the inner groove is 2-4 mm.

[0011] The E welding length is 10-20mm. The Q and W welding zones are located on the side wall of the support component, which limits the longitudinal welding length, while the E welding zone is located at the bottom. The connection strength can be enhanced by designing the E welding length.

[0012] The outer side of the connection between the upper and lower channel beams is provided with a V-shaped welding groove, and the outer side of the welding groove is provided with an anti-overflow inclined surface. The connection between the upper and lower channel beams requires welding. Due to the small gap at the weld, the connection strength after welding is not strong, and welding protrusions will appear after welding. Later, in order to make the parts flat and aesthetically pleasing, the welding protrusions need to be ground, which not only increases the processing steps but also affects the connection strength. However, by setting the welding groove and the anti-overflow inclined surface, grinding is not required or only minimal grinding is required, and the connection strength is also increased.

[0013] The upper and lower support plates have mounting grooves on their surfaces, forming a closed inner cavity filled with an EPDM rubber gasket. The EPDM rubber gasket has a PTFE coating. The purpose of the EPDM rubber gasket is to ensure a tight contact between the upper and lower support plates, preventing gaps. The EPDM rubber gasket also serves to absorb and conduct energy. The placement of the EPDM rubber gasket in the closed inner cavity improves sealing and extends its service life. The PTFE coating enhances corrosion resistance.

[0014] In this utility model, the upper channel beam, lower channel beam, reinforcing rib, upper support plate, and lower support plate are all made of aluminum alloy.

[0015] In this invention, the number of supporting components is determined by the number of areas requiring reinforcement, and the number of supporting components is the same as the number of areas requiring reinforcement. The areas requiring reinforcement are generally battery pack support points and impact energy absorption zones.

[0016] In this invention, the reinforcing ribs and the upper / lower channel beams are integrally formed by casting.

[0017] The beneficial effects of this utility model are as follows:

[0018] The support components are distributed at different positions inside the longitudinal beam casting along the length of the longitudinal beam casting, and are strengthened only in the key stress areas. Compared with the traditional structure with a reinforcing beam running through the entire length, the overall weight is greatly reduced, while the strength of the key stress areas is still guaranteed.

[0019] The upper / lower inclined plates and the inner groove of the reinforcing ribs slide together, and the Q / W / E three-zone welding forms a mechanical interlock, which improves the connection strength and effectively resists longitudinal crushing deformation upon impact. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 yes Figure 1 A magnified view of A in the middle;

[0022] Figure 3 This is a partial structural view of the connection between the upper and lower channel beams;

[0023] Figure 4 This is a schematic diagram of the structure with mounting grooves on the surface of the upper support plate;

[0024] Figure 5 This is a schematic diagram of the structure of the mounting groove filled with EPDM rubber pads;

[0025] Figure 6 This is a schematic diagram of the structure of the EPDM rubber pad and the PTFE coating.

[0026] Reference numerals: 1. Upper channel beam; 2. Lower channel beam; 3. Reinforcing rib; 4. Upper support plate; 5. Lower support plate; 6. Upper inclined plate; 7. Lower inclined plate; 8. Inner groove; 9. Connecting part; 10. Welding groove; 11. Anti-overflow inclined surface; 12. Mounting groove; 13. EPDM rubber pad; 14. PTFE coating. Detailed Implementation

[0027] 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, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] Example 1

[0030] like Figures 1 to 6 As shown, this embodiment provides an aluminum alloy longitudinal beam casting for a new energy vehicle, including an upper groove beam 1 and a lower groove beam 2. The upper groove beam 1 and the lower groove beam 2 are welded together. The inner walls of the upper groove beam 1 and the lower groove beam 2 are provided with two reinforcing ribs 3. The two reinforcing ribs 3 are arranged in parallel and extend along the length direction of the upper groove beam 1 / lower groove beam 2.

[0031] The longitudinal beam casting also includes multiple support components. The support components are distributed at different positions inside the longitudinal beam casting along the length direction of the longitudinal beam casting. The support components include an upper support plate 4 and a lower support plate 5. The upper support plate 4 is provided with upper inclined plates 6 on both sides, and the lower support plate 5 is provided with lower inclined plates 7 on both sides. The upper inclined plates 6 are slidably connected to the reinforcing ribs 3 of the upper channel beam 1, and the lower inclined plates 7 are slidably connected to the reinforcing ribs 3 of the lower channel beam 2.

[0032] After the upper channel beam 1 and the lower channel beam 2 are welded, the upper support plate 4 and the lower support plate 5 come into close contact.

[0033] The reinforcing rib 3 has inner grooves 8 on both sides. The inner grooves 8 are arc-shaped transition grooves that are deeper in the middle and shallower on both sides. Both the upper inclined plate 6 and the lower inclined plate 7 have connecting parts 9, which slide with the inner grooves 8. There are three welding zones, Q, W, and E, between the connecting parts 9 and the grooves. When the support assembly is installed in the designated position, it needs to be fixed by welding. Multiple welding zones are set to increase the connection strength.

[0034] In the three welding zones Q, W, and E, the gap between the connecting part 9 and the inner groove 8 is 2-4 mm.

[0035] The E welding length is 10-20mm. The Q and W welding zones are located on the side wall of the support component, which limits the longitudinal welding length, while the E welding zone is located at the bottom. The connection strength can be enhanced by designing the E welding length.

[0036] The outer side of the connection between the upper channel beam 1 and the lower channel beam 2 is provided with a V-shaped welding groove 10, and the outer side of the welding groove 10 is provided with an anti-overflow inclined surface 11. The connection between the upper channel beam 1 and the lower channel beam 2 requires welding. Due to the small gap at the weld, the connection strength after welding is not firm, and welding protrusions will appear after welding. Later, in order to make the parts flat and aesthetically pleasing, the welding protrusions need to be ground, which not only increases the processing steps but also affects the connection strength. However, by setting the welding groove 10 and the anti-overflow inclined surface 11, no grinding is required or only a small amount of grinding is required, and the connection strength is also increased.

[0037] The upper support plate 4 and the lower support plate 5 are provided with mounting grooves 12. The two mounting grooves 12 form a closed inner cavity, which is filled with an EPDM rubber gasket 13. The surface of the EPDM rubber gasket 13 is coated with a PTFE coating 14. The purpose of setting the EPDM rubber gasket 13 is to ensure that the upper support plate 4 and the lower support plate 5 are in close contact and to avoid gaps. The EPDM rubber gasket 13 also plays a role in energy absorption and conduction. The placement of the EPDM rubber gasket 13 in the closed inner cavity can improve the sealing performance and extend the service life of the EPDM rubber gasket 13. The PTFE coating 14 improves corrosion resistance.

[0038] In this utility model, the upper channel beam 1, the lower channel beam 2, the reinforcing rib 3, the upper support plate 4, and the lower support plate 5 are all made of aluminum alloy.

[0039] In this invention, the number of supporting components is determined by the number of areas requiring reinforcement, and the number of supporting components is the same as the number of areas requiring reinforcement. The areas requiring reinforcement are generally battery pack support points and impact energy absorption zones.

[0040] In this invention, the reinforcing rib 3 and the upper / lower channel beam 2 are integrally formed by casting.

Claims

1. A casting of aluminum alloy longitudinal beams for new energy vehicles, comprising an upper slot beam and a lower slot beam, characterized in that: The upper and lower channel beams are welded together. The inner walls of both the upper and lower channel beams are provided with two reinforcing ribs. The two reinforcing ribs are arranged in parallel and extend along the length of the upper / lower channel beam. The longitudinal beam casting also includes multiple support components, which are distributed at different positions inside the longitudinal beam casting along the length of the longitudinal beam casting. Each support component includes an upper support plate and a lower support plate. The upper support plate has upper inclined plates on both sides, and the lower support plate has lower inclined plates on both sides. The upper inclined plates are slidably connected to the reinforcing ribs of the upper channel beam, and the lower inclined plates are slidably connected to the reinforcing ribs of the lower channel beam. After the upper and lower channel beams are welded, the upper support plate and the lower support plate are in close contact.

2. The aluminum alloy longitudinal beam casting for new energy vehicles according to claim 1, characterized in that, The reinforcing rib has inner grooves on both sides. The inner grooves are arc-shaped transition grooves that are deep in the middle and shallow on both sides. Both the upper and lower inclined plates have connecting parts. The connecting parts slide with the inner grooves. There are three welding zones, Q, W and E, between the connecting parts and the grooves.

3. The aluminum alloy longitudinal beam casting for new energy vehicles according to claim 2, characterized in that, In the three welding zones Q, W, and E, the gap between the connecting part and the inner groove is 2-4 mm.

4. The aluminum alloy longitudinal beam casting for new energy vehicles according to claim 3, characterized in that, The E welding length is 10-20mm.

5. The aluminum alloy longitudinal beam casting for new energy vehicles according to claim 1, characterized in that, The outer side of the connection between the upper and lower channel beams is provided with a V-shaped welding groove, and the outer side of the welding groove is provided with an anti-overflow inclined surface.

6. The aluminum alloy longitudinal beam casting for new energy vehicles according to claim 1, characterized in that, The upper support plate and the lower support plate are provided with mounting grooves. The two mounting grooves form a closed inner cavity, which is filled with an EPDM rubber pad. The surface of the EPDM rubber pad is coated with PTFE.

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