Magnesium alloy battery replacing frame

Abstract

The utility model discloses a magnesium alloy battery replacing frame, and relates to the technical field of automobile parts. According to the technical scheme, the device comprises a profile frame made of magnesium alloy, the frame is provided with a bottom assembly, a battery bracket, a top assembly and a skin connecting assembly, and the bottom assembly and the top assembly are each composed of a plurality of supporting columns, a plurality of cross beams and a plurality of connecting pieces; the skin connecting assembly is composed of a plurality of supporting columns, inclined struts and connecting pieces. Supporting columns of the bottom assembly and supporting columns of the skin assembly are hierarchically designed, the wall thickness of the section of each supporting column on the upper layer is smaller than that of the section of each supporting column on the lower layer, and light weight and safety performance are optimally balanced. The battery bracket is modularly designed, and each layer has the same structure and is sequentially connected with a plurality of supporting columns through supporting pieces; pull ropes are arranged on the two sides of the frame to improve the stability of the frame, and the safety of the structure is further guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive parts, specifically to a magnesium alloy battery swapping frame. Background Technology

[0002] As an important part of the road transportation industry, commercial vehicles are increasingly moving towards new energy sources, in addition to traditional fuel modes. Battery swapping is a way to replenish energy for new energy vehicles. Compared with charging, battery swapping has advantages such as faster replenishment speed, higher automation, higher integration, higher safety, and faster construction speed. These advantages have led to the widespread application of battery swapping in the commercial vehicle sector.

[0003] However, when manufacturing the battery swapping frame, a steel welded structure is usually chosen, which results in a large weight for the entire frame and increases the difficulty of transportation and installation. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a magnesium alloy battery swapping frame that uses magnesium alloy bolt connections instead of traditional steel welded structures, thus satisfying the requirements for portability and flexibility in terms of structure.

[0005] The above-mentioned objective of this utility model is achieved through the following technical solution:

[0006] A magnesium alloy battery swapping frame includes a bottom assembly and a top assembly, which are connected by a skin connecting assembly. The bottom assembly includes several side beams, which are bolted together by first connectors to form a rectangular frame. Bottom corner supports are connected to the four corners of the rectangular frame. Several bottom middle supports are also arranged on the side beams, which are bolted to the side beams by second connectors. Opposite second connectors abut against each other by first intermediate ribs. The sides of two adjacent first intermediate ribs that are far apart from each other are bolted to the second connectors by positioning brackets. The positioning brackets are bolted to the first intermediate ribs.

[0007] In a preferred embodiment, the present invention can be further configured such that: the bottom assembly is provided with a plurality of reinforcing ribs, the reinforcing ribs are bolted to the side beam through a third connector, and both the third connector and the positioning bracket are "L" shaped.

[0008] In a preferred embodiment, the present invention can be further configured as follows: the top assembly is structurally similar to the bottom assembly, the top assembly is a rectangular frame composed of side beams and fourth connectors, the four corner pillars of the rectangular frame are bolted to the four corners of the rectangular frame by the fourth connectors, and the rectangular frame is also connected to the top middle pillars by a number of fifth connectors, the number of the top middle pillars and the number of the bottom middle pillars correspond.

[0009] In a preferred embodiment, the present invention can be further configured such that: the skin connection assembly includes four corner support assemblies and several intermediate support assemblies, wherein the number of intermediate support assemblies corresponds to the number of top intermediate support assemblies;

[0010] One end of the four corner support assembly is fixedly connected to the top four corner support via the ninth connector, and the other end is fixedly connected to the bottom four corner support via the ninth connector.

[0011] One end of the intermediate support assembly is fixedly connected to the top intermediate support via the ninth connector, and the other end is fixedly connected to the bottom intermediate support via the ninth connector.

[0012] The four corner support assembly is bolted with an eighth connector, and the middle support assembly is bolted with a seventh connector.

[0013] Several diagonal bracing members are also provided. One end of each diagonal bracing member is bolted to the seventh connecting member, and the other end of each diagonal bracing member is bolted to the seventh or eighth connecting member.

[0014] In a preferred embodiment, this utility model can be further configured as follows: a plurality of battery trays are provided, and the plurality of battery trays are bolted to the bottom assembly, the top assembly, and the skin connection assembly respectively. Each battery tray has a plurality of support members on its lower side. The support members are L-shaped, with one end of the support member bolted to the bottom surface of the battery tray, and the other end of the support member connected to one of the bottom assembly, the top assembly, and the skin connection assembly. The support members on the lower side of each battery tray are at the same horizontal height.

[0015] In a preferred embodiment, the present invention can be further configured such that: both sides of the bottom assembly and the top assembly are provided with pull ropes, the two ends of the pull rope of the bottom assembly are respectively connected to two adjacent first connectors, the two ends of the pull rope of the top assembly are respectively connected to two adjacent fourth connectors, and the two pull ropes on the same side are connected by a tenth connector.

[0016] In a preferred embodiment, the present invention can be further configured such that the positioning bracket has a circular hole.

[0017] In summary, this utility model has at least one of the following beneficial technical effects:

[0018] 1. The use of bolted connections instead of traditional steel welding structures represents a structural innovation that enhances overall portability and flexibility;

[0019] 2. The innovative design of the skin connection assembly directly forms a truss structure through diagonal bracing members on adjacent columns. In addition, the middle part of the frame forms a cross arrangement at the front and rear, which improves the stability of the frame.

[0020] 3. The L-shaped positioning bracket with a central hole can be used to engage with the pins on the frame for precise assembly.

[0021] 4. The installed pull ropes can improve the stability and deflection of the frame. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this technical solution;

[0023] Figure 2 This is a schematic diagram of the bottom assembly in this technical solution;

[0024] Figure 3 This is a schematic diagram of the skin connection assembly in this technical solution;

[0025] Figure 4 This is a structural schematic diagram of the top assembly in this technical solution;

[0026] Figure 5 This is a schematic diagram of the battery bracket structure in this technical solution;

[0027] Figure 6 This is a cross-sectional view of the positioning bracket in this technical solution.

[0028] Reference numerals: 1. Bottom assembly; 11. Bottom side beam; 12. First connector; 13. Bottom four corner supports; 14. Bottom middle support; 15. Second connector; 16. First intermediate rib; 17. Positioning bracket; 18. Reinforcing rib; 19. Third connector; 2. Battery bracket; 21. Crossbeam; 22. Longitudinal beam; 3. Skin connection assembly; 31. Four corner support assembly; 311. First four corner support; 312. Second four corner support; 313. Third four corner support. 32. Column; 321. First intermediate column; 322. Second intermediate column; 323. Third intermediate column; 33. Ninth connector; 34. Eighth connector; 35. Seventh connector; 36. Diagonal brace; 4. Top assembly; 41. Fourth connector; 42. Top side beam; 43. Top four corner columns; 44. Fifth connector; 45. Top intermediate column; 5. Pull rope; 6. Tenth connector; 7. Support; 8. L-shaped bracket. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings.

[0030] like Figure 1-6As shown in the figure, it is a magnesium alloy battery swapping frame disclosed by this technical solution;

[0031] First of all, all the structures in this technical solution are made of magnesium alloy materials. At the same time, the profiles in the solution all adopt a structure with a "day" cross-section, which can meet the dual high-standard requirements of both lightweight and safety performance of the frame, and improve the transportation efficiency.

[0032] Specifically, it includes a bottom assembly 1 and a top assembly 4, and the bottom assembly 1 and the top assembly 4 are connected by a skin connection assembly 3;

[0033] The bottom assembly 1 includes several bottom side beams 11. The several bottom side beams 11 are bolt-connected by a first connecting piece 12 and form a rectangular frame. Bottom corner struts 13 are connected at the four corners of the rectangular frame. Several bottom intermediate struts 14 are also arranged in an array on the bottom side beams 11. The several bottom intermediate struts 14 and the bottom side beams 11 are bolt-connected by a second connecting piece 15. The opposite second connecting pieces 15 are abutted by a first intermediate rib 16. The mutually remote side surfaces of two adjacent first intermediate ribs 16 are bolt-connected to the second connecting piece 15 by a positioning bracket 17, and the positioning bracket 17 is bolt-connected to the first intermediate rib 16. Here, the inner sides of the bottom side beams 11 and the struts are both profile structures, and sandwich ribs are provided inside; at the same time, the frame is hierarchically designed in terms of the cross-sectional thickness of the struts. In the vertical direction, the wall thickness of the bottom corner struts 13 is the largest to provide firm support force and stability. [[ID=Eleven]]

[0034] Furthermore, several reinforcing ribs 18 are also provided on the bottom assembly 1. The reinforcing ribs 18 are bolt-connected to the bottom side beams 11 by a third connecting piece 19. Both the third connecting piece 19 and the positioning bracket 17 are "L"-shaped. The reinforcing ribs 18 have the same structure as the first intermediate ribs 16 and are essentially the same profile parts. In this technical solution, they are named and distinguished due to different connection positions. The reinforcing ribs 18 provided here are used to further improve the strength of the bottom assembly 1 and ensure the support force and safety of the frame.

[0035] Furthermore, the positioning bracket 17 is provided with round holes. The round holes here are used as positioning holes to achieve precise alignment with the positioning pins on the vehicle frame, improving the convenience and effect of the operation of the battery swapping frame.

[0036] Furthermore, the top assembly 4 is similar in structure to the bottom assembly 1. The top assembly 4 is composed of top side beams 42 and a fourth connecting piece 41 to form a rectangular frame. Top corner struts 43 are bolt-connected at the four corners of the rectangular frame through the fourth connecting piece 41. Several top intermediate struts 45 are also connected to the rectangular frame by several fifth connecting pieces 44 respectively. The number of top intermediate struts 45 corresponds to that of the bottom intermediate struts 14.

[0037] Furthermore, the skin connection assembly 3 includes four corner support assemblies 31 and several intermediate support assemblies 32, the number of which corresponds to the number of top intermediate support assemblies 45;

[0038] One end of the four-corner support assembly 31 is fixedly connected to the top four-corner support 43 via the ninth connector 33, and the other end is fixedly connected to the bottom four-corner support 13 via the ninth connector 33.

[0039] One end of the intermediate support assembly 32 is fixedly connected to the top intermediate support 45 via the ninth connector 33, and the other end is fixedly connected to the bottom intermediate support 14 via the ninth connector 33.

[0040] The corner support assembly 31 is bolted with an eighth connector 34, and the middle support assembly 32 is bolted with a seventh connector 35.

[0041] Furthermore, several diagonal bracing members 36 are provided. One end of the diagonal bracing member 36 is bolted to the seventh connecting member 35, and the other end of the diagonal bracing member 36 is bolted to either the seventh connecting member 35 or the eighth connecting member 34. Specifically, the seventh connecting member 35 is used to connect the diagonal bracing members 36 between adjacent intermediate support assemblies 32, while the seventh connecting member 35 is used to connect one end of the diagonal bracing member 36 between adjacent intermediate support assemblies 32 and four corner support assemblies 31, and the eighth connecting member 34 is used to connect the other end.

[0042] In this technical solution, the four-corner support assembly 31 is divided into three segments, namely the first four-corner support 311, the second four-corner support 312 and the third four-corner support 313. Similarly, the intermediate support assembly 32 is divided into three segments, namely the first intermediate support 321, the second intermediate support 322 and the third intermediate support 323. The bottom four corner supports have the thickest walls, followed by the third corner support 313, ensuring sufficient strength to meet the main load-bearing requirements. The wall thickness of the second corner support 312 is further reduced to reduce weight while maintaining structural integrity. The wall thickness of the first corner support 311 is the thinnest. The wall thickness of the top middle support 45, the bottom middle support 14, and the middle support assembly 32 is not less than the thickness of the interlayer reinforcement. The wall thickness of the bottom middle support 14 is greater than that of the third middle support 323, the third middle support 323 is greater than that of the second middle support 322, and the second middle support 322 is greater than that of the first middle support 321. The thickness of the interlayer reinforcement of the upper layer of middle supports is not greater than that of the interlayer reinforcement of the lower layer of middle supports. The wall thickness and interlayer reinforcement thickness of the top four corner supports 43 and the top middle support 45 of the top assembly 4 are the same. This design maximizes lightweighting while ensuring reliability, achieving the best balance between lightweighting and safety.

[0043] The first four-corner support 311, the second four-corner support 312, and the third four-corner support 313, as well as the first intermediate support 321, the second intermediate support 322, and the third intermediate support 323, are all connected by the ninth connector 33. Some of them are also connected by the eighth connector 34 or the seventh connector 35. Both sides of the ninth connector 33 are flat plate structures to absorb tolerances. In addition, there is no need to re-cut the cross-section, which reduces production costs.

[0044] Furthermore, several battery trays 2 are provided, which are bolted to the bottom assembly 1, the top assembly 4, and the skin connection assembly 3 respectively. Each battery tray 2 has several support members 7 on its lower side. The support members 7 are L-shaped. One end of the support member 7 is bolted to the bottom surface of the battery tray 2, and the other end of the support member 7 is connected to one of the bottom assembly 1, the top assembly 4, and the skin connection assembly 3. The support members 7 on the lower side of each battery tray 2 are at the same horizontal height.

[0045] The battery bracket 2 features a modular design, with four layers in this embodiment. The crossbeams 21 and longitudinal beams 22 are connected via L-shaped brackets 8, pre-connected as a single unit before being integrated with the frame. Therefore, for ease of installation, the longitudinal beams 22 are smaller than the spacing between adjacent supports. Support members 7 connect to the battery bracket, allowing the bracket and frame to be integrated. Simultaneously, the diagonal braces 36 fixed between adjacent supports, along with the crossbeams 21 and diagonal braces 36, share the weight of the battery, forming a truss-like connection structure. Furthermore, the front and rear diagonal braces 36 in the middle section of the frame are arranged in a crisscross pattern, further optimizing the overall mechanical properties of the frame and enhancing structural stability.

[0046] Furthermore, pull ropes 5 are provided on both sides of the bottom assembly 1 and the top assembly 4. The two ends of the pull rope 5 of the bottom assembly 1 are respectively connected to two adjacent first connectors 12, and the two ends of the pull rope 5 of the top assembly 4 are respectively connected to two adjacent fourth connectors 41. The two pull ropes 5 on the same side are connected by a tenth connector 6. An X-shaped diagonal brace is formed on the side of the frame to improve the deflection of the frame.

[0047] Furthermore, the top of the top assembly 4 can be equipped with a storage frame for placing other items.

[0048] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A magnesium alloy battery swapping frame, characterized in that, The assembly includes a bottom assembly (1) and a top assembly (4), which are connected by a skin connection assembly (3). The bottom assembly (1) includes several bottom side beams (11), which are bolted together by first connectors (12) to form a rectangular frame. Bottom corner supports (13) are connected at the four corners of the rectangular frame. Several bottom middle supports (14) are also arranged on the bottom side beams (11). The bottom middle supports (14) are bolted to the bottom side beams (11) by second connectors (15). The opposite second connectors (15) are abutted by first middle ribs (16). The sides of two adjacent first middle ribs (16) that are far apart from each other are bolted to the second connectors (15) by positioning brackets (17). The positioning brackets (17) are bolted to the first middle ribs (16).

2. The magnesium alloy battery swapping frame according to claim 1, characterized in that, The bottom assembly (1) is also provided with a number of reinforcing ribs (18), which are bolted to the bottom side beam (11) through a third connector (19). Both the third connector (19) and the positioning bracket (17) are "L" shaped.

3. A magnesium alloy battery swapping frame according to claim 1, characterized in that, The top assembly (4) is similar in structure to the bottom assembly (1). The top assembly (4) consists of a rectangular frame composed of a top side beam (42) and a fourth connector (41). The four corners of the rectangular frame are bolted to the top four corner pillars (43) through the fourth connector (41). The rectangular frame is also connected to the top middle pillars (45) through several fifth connectors (44). The number of the top middle pillars (45) corresponds to the number of the bottom middle pillars (14).

4. A magnesium alloy battery swapping frame according to claim 3, characterized in that, The skin connection assembly (3) includes four corner support assemblies (31) and several intermediate support assemblies (32), the number of which corresponds to the number of the top intermediate support (45); One end of the four corner support assembly (31) is fixedly connected to the top four corner support (43) via the ninth connector (33), and the other end is fixedly connected to the bottom four corner support (13) via the ninth connector (33). One end of the intermediate support assembly (32) is fixedly connected to the top intermediate support (45) via the ninth connector (33), and the other end is fixedly connected to the bottom intermediate support (14) via the ninth connector (33). The four corner support assembly (31) is bolted with an eighth connector (34), and the middle support assembly (32) is bolted with a seventh connector (35); Several diagonal bracing members (36) are provided, one end of which is bolted to the seventh connecting member (35), and the other end of which is bolted to the seventh connecting member (35) or the eighth connecting member (34).

5. A magnesium alloy battery swapping frame according to claim 4, characterized in that, Several battery trays (2) are provided, and several battery trays (2) are bolted to the bottom assembly (1), the top assembly (4) and the skin connection assembly (3) respectively. Several support members (7) are provided on the lower side of each battery tray (2). The support members (7) are L-shaped. One end of the support member (7) is bolted to the bottom surface of the battery tray (2), and the other end of the support member (7) is connected to one of the bottom assembly (1), the top assembly (4) and the skin connection assembly (3). The support members (7) on the lower side of each battery tray (2) are at the same horizontal height.

6. A magnesium alloy battery swapping frame according to claim 5, characterized in that, Both sides of the bottom assembly (1) and the top assembly (4) are provided with pull ropes (5). The two ends of the pull ropes (5) of the bottom assembly (1) are respectively connected to two adjacent first connectors (12), and the two ends of the pull ropes (5) of the top assembly (4) are respectively connected to two adjacent fourth connectors (41). The two pull ropes (5) on the same side are connected by a tenth connector (6).

7. A magnesium alloy battery swapping frame according to claim 1, characterized in that, The positioning bracket (17) has a circular hole.

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