Battery pack collision protection structure, battery pack, lower vehicle body and automobile

Abstract

The utility model relates to a battery pack collision protection structure, battery pack, lower car body and car, this battery pack collision protection structure includes: two buffer assemblies, two buffer assemblies are opposite distribution, are respectively used for connecting the both sides of battery pack with the both sides of car body longitudinal beam, the utility model has the advantages of simple structure, reasonable in design, aims at solving the problem of insufficient collision force buffering, easy rigid contact in the existing battery pack collision protection scheme, provides a kind of battery pack collision protection structure that can be buffered, sliding avoidance realizes hierarchical protection, improves battery pack collision safety, prolongs its life, reduces cost.

Description

Technical Field

[0001] This utility model relates to the field of automotive battery pack technology, specifically to a battery pack collision protection structure, a battery pack, a vehicle body, and an automobile. Background Technology

[0002] With the popularization of new energy vehicles, the battery pack, as a core energy component of the vehicle, directly affects vehicle safety and the lives of drivers and passengers due to its collision safety. Currently, most vehicle battery packs are directly installed at the bottom of the vehicle body using a fixed structure. When a collision occurs (especially a side or rear collision), the impact force is easily transmitted directly to the battery pack itself, potentially causing the battery pack casing to rupture, internal cells to be damaged, and leading to safety hazards such as leakage and fire. Currently, existing protection solutions mostly rely on strengthening the battery pack casing or installing rigid anti-collision beams around it. However, rigid protection can easily lead to the concentrated transmission of collision force, making it difficult to effectively buffer the impact of a collision. Furthermore, it cannot prevent the battery pack from making hard contact with the vehicle body structure during a collision, resulting in limited protection effectiveness. Utility Model Content

[0003] This utility model addresses the technical problems existing in the prior art by providing a battery pack collision protection structure, a battery pack, a lower body, and a car.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A battery pack collision protection structure includes two buffer components, which are distributed opposite to each other and are respectively used to connect the two sides of the battery pack to the two sides of the vehicle body longitudinal beam.

[0005] The beneficial effects of this utility model are: during assembly, two buffer components are used to connect the two sides of the battery pack with the two sides of the vehicle body longitudinal beam; When the battery pack is involved in a collision, two buffer components are used to cushion the battery pack. The two buffer components effectively disperse and dissipate the collision energy, preventing the collision force from being concentrated and transmitted to the battery pack. This avoids hard contact between the battery pack and the vehicle body structure, significantly reducing the risk of battery pack shell rupture and cell damage. It is safe and reliable, and can also extend the battery pack's service life and reduce costs.

[0006] This utility model has a simple structure and reasonable design. It aims to solve the problems of insufficient collision force buffering and easy hard contact in existing battery pack collision protection schemes. It provides a battery pack collision protection structure that can achieve graded protection through buffering and sliding avoidance, thereby improving the collision safety of the battery pack, extending its service life, and reducing costs.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, each of the two buffer components includes a sliding guide rail, a sliding block, and a buffer. The two sliding guide rails are arranged opposite to each other and are used to connect the two sides of the vehicle body longitudinal beam. The two sliding blocks are slidably mounted on the two sliding guide rails and are used to connect the two sides of the battery pack. The two buffers are distributed at the ends of the two sliding guide rails and are used to buffer the impact of the battery pack.

[0009] The beneficial effect of adopting the above-mentioned further solution is that during assembly, the two sliding guide rails are fixedly connected to both sides of the vehicle body longitudinal beam, the two sliding blocks are connected to both sides of the battery pack, and the two sliding blocks are slidably connected to the two sliding guide rails respectively. When the battery pack is involved in a collision, it shifts and the two sliding blocks slide along the two sliding guides. At the same time, the buffer further cushions the battery pack, effectively dispersing and dissipating the collision energy and preventing the collision force from being concentrated and transmitted to the battery pack. This avoids hard contact between the battery pack and the vehicle body structure, significantly reducing the risk of battery pack casing rupture and cell damage. It is safe and reliable, and can also extend the battery pack's lifespan and reduce costs.

[0010] Furthermore, wear-resistant layers are installed inside each of the two sliding guide rails.

[0011] The advantages of adopting the above-mentioned further solution are that the structure is simple and the design is reasonable. The wear-resistant layer can effectively reduce the wear between the sliding block and the sliding guide rail, extend the service life of the sliding block and the sliding guide rail, and reduce costs.

[0012] Furthermore, each of the two buffers includes two buffer blocks, and the two pairs of buffer blocks are respectively mounted opposite each other at both ends of the two sliding guide rails.

[0013] The advantages of adopting the above-mentioned further solution are that the structure is simple and the design is reasonable. When the battery pack is involved in a collision, two buffers are used to further buffer the battery pack. The buffering effect is better, effectively dispersing and consuming the collision energy, avoiding the concentrated transmission of the collision force to the battery pack, avoiding hard contact between the battery pack and the vehicle body structure, greatly reducing the risk of battery pack shell rupture and cell damage, making it safe and reliable, and extending the service life of the battery pack and reducing costs.

[0014] Furthermore, each of the two buffer components also includes two limiting blocks, and the two pairs of limiting blocks are respectively installed opposite to each other at both ends of the two sliding guide rails.

[0015] The advantages of adopting the above-mentioned further solution are that the structure is simple and the design is reasonable. It uses two pairs of limiting blocks to effectively limit the two ends of the battery pack and avoid excessive movement of the battery pack.

[0016] Furthermore, each of the two buffer components includes an elastic buffer frame, which is distributed opposite to each other and is used to connect the two sides of the battery pack to the two sides of the vehicle body longitudinal beam.

[0017] The beneficial effect of adopting the above-mentioned further solution is that during assembly, the two elastic buffer frames are respectively connected to both sides of the vehicle body longitudinal beam and both sides of the battery pack. When the battery pack is involved in a collision, it shifts. Two elastic buffer frames cushion the movement of the battery pack, effectively dispersing and dissipating the collision energy and preventing the collision force from being concentrated on the battery pack. This avoids hard contact between the battery pack and the vehicle body structure, significantly reducing the risk of battery pack casing rupture and cell damage. It is safe and reliable, and can also extend the battery pack's lifespan and reduce costs.

[0018] Furthermore, multiple partitions are fixedly installed at even intervals in each of the two elastic buffer frames along the direction from one end to the other, and an elastic diamond-shaped buffer plate is installed between each pair of adjacent partitions.

[0019] The advantages of adopting the above-mentioned further solution are that the structure is simple and the design is reasonable. The multiple diamond-shaped buffer plates set in the two elastic buffer frames further buffer the battery pack, ensuring the buffering effect of the battery pack and further protecting the battery pack, resulting in better protection.

[0020] This utility model also relates to a battery pack, including a battery pack body and a battery pack collision protection structure as described above, with two buffer components mounted opposite each other on both sides of the battery pack body.

[0021] The beneficial effect of adopting the above-mentioned further solutions is that this utility model also provides a battery pack with a simple structure and reasonable design. It aims to solve the problems of insufficient collision force buffering and easy hard contact in the existing battery pack collision protection schemes, and provides a battery pack collision protection structure that can achieve graded protection through buffering and sliding avoidance, thereby improving the collision safety of the battery pack, extending its service life, and reducing costs.

[0022] This utility model also relates to a vehicle body, including the battery pack described above.

[0023] The beneficial effect of adopting the above-mentioned further solution is that this utility model also provides a lower body, which has a simple structure and reasonable design. It aims to solve the problems of insufficient collision force buffering and easy hard contact in the existing battery pack collision protection scheme. It provides a battery pack collision protection structure that can achieve graded protection through buffering and sliding avoidance, thereby improving the collision safety of the battery pack, extending its service life, and reducing costs.

[0024] This utility model also relates to an automobile, including the lower body as described above.

[0025] The beneficial effect of adopting the above-mentioned further solutions is that this utility model also provides a car with a simple structure and reasonable design. It aims to solve the problems of insufficient collision force buffering and easy hard contact in the existing battery pack collision protection schemes, and provides a battery pack collision protection structure that can achieve graded protection through buffering and sliding avoidance, thereby improving the collision safety of the battery pack, extending its service life, and reducing costs. Attached Figure Description

[0026] Figure 1 This is an exploded view of the first embodiment of the buffer component in this utility model; Figure 2 This is one of the assembly drawings of the buffer component and the vehicle body longitudinal beam in the first embodiment of this utility model; Figure 3 This is the second assembly drawing of the buffer component and the vehicle body longitudinal beam in the first embodiment of this utility model; Figure 4 This is the third assembly drawing of the first embodiment of the buffer component and the longitudinal beam of the vehicle body in this utility model; Figure 5 This is an assembly diagram of the second embodiment of the buffer component in this utility model; Figure 6 This is one of the assembly drawings of the battery pack in this utility model; Figure 7 This is the second assembly drawing of the battery pack in this utility model; Figure 8 This is an assembly drawing of the battery packaging mounted on the lower body of the vehicle in this utility model.

[0027] The attached diagram lists the components represented by each number as follows: 1. Vehicle body longitudinal beam; 2. Sliding guide rail; 3. Sliding block; 4. Wear-resistant layer; 5. Buffer block; 6. Limiting block; 7. Elastic buffer frame; 8. Partition plate; 9. Diamond-shaped buffer plate; 10. Battery pack body. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0030] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this technology based on the specific circumstances.

[0031] In the description of this application, spatial relation terms such as "below," "under," "below," "below," "above," "over," etc., are used herein to describe the relationship between one element or feature shown in the figures and other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figures is flipped, an element or feature described as "below" or "under" or "below" of other elements or features will be oriented "above" other elements or features. Therefore, the exemplary terms "below" and "under" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein are interpreted accordingly.

[0032] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0033] Example 1 like Figures 1 to 5 As shown, this embodiment provides a battery pack collision protection structure, including: two buffer components, which are distributed opposite to each other and are used to connect the two sides of the battery pack with the two sides of the vehicle body longitudinal beam 1.

[0034] During assembly, two buffer components are used to connect the two sides of the battery pack to the two sides of the vehicle body longitudinal beam 1. When the battery pack is involved in a collision, two buffer components are used to cushion the battery pack. The two buffer components effectively disperse and dissipate the collision energy, preventing the collision force from being concentrated and transmitted to the battery pack. This avoids hard contact between the battery pack and the vehicle body structure, significantly reducing the risk of battery pack shell rupture and cell damage. It is safe and reliable, and can also extend the battery pack's service life and reduce costs.

[0035] Preferably, in this embodiment, the above-mentioned vehicle body longitudinal beam 1 includes a left longitudinal beam and a right longitudinal beam, which are distributed opposite to each other; the two sides of the battery pack are respectively connected to the left longitudinal beam and the right longitudinal beam through buffer components.

[0036] This embodiment has a simple structure and reasonable design, aiming to solve the problems of insufficient collision force buffering and easy hard contact in existing battery pack collision protection solutions. It provides a battery pack collision protection structure that can achieve graded protection through buffering and sliding avoidance, thereby improving the collision safety of the battery pack, extending its service life, and reducing costs.

[0037] Example 2 Based on Example 1, such as Figures 1 to 4 As shown, in this embodiment, the two buffer components each include a sliding guide rail 2, a sliding block 3, and a buffer. The two sliding guide rails 2 are arranged opposite to each other and are used to connect the two sides of the vehicle body longitudinal beam 1. The two sliding blocks 3 are slidably mounted on the two sliding guide rails 2 respectively and are used to connect the two sides of the battery pack. The two buffers are distributed at the ends of the two sliding guide rails 2 respectively and are used to buffer the collision of the battery pack.

[0038] During assembly, the two sliding guide rails 2 are fixedly connected to both sides of the vehicle body longitudinal beam 1, and the two sliding blocks 3 are connected to both sides of the battery pack, and the two sliding blocks 3 are slidably connected to the two sliding guide rails 2 respectively. When the battery pack is involved in a collision, the battery pack is displaced, and the two sliding blocks 3 slide along the two sliding guide rails 2 respectively. At the same time, the buffer further cushions the battery pack, effectively dispersing and consuming the collision energy, preventing the collision force from being concentrated and transmitted to the battery pack. This avoids the battery pack from making hard contact with the vehicle body structure, greatly reducing the risk of battery pack shell rupture and cell damage. It is safe and reliable, and can also extend the service life of the battery pack and reduce costs.

[0039] Preferably, in this embodiment, the sliding guide rail 2 and the sliding block 3 are respectively elongated strip structures, which extend from one end of the battery pack to the other side.

[0040] Preferably, in this embodiment, the sliding guide rail 2 is provided with a T-shaped groove, the cross section of the sliding block 3 is T-shaped, and the sliding block 3 is in sliding engagement with the sliding guide rail 2.

[0041] In addition, the longitudinal beam 1 of the vehicle body is made of high-strength aluminum alloy, and its length is adapted to the vehicle wheelbase. Two parallel steel sliding guide rails are fixed to the top surface by bolts.

[0042] Example 3 Based on Example 2, in this example, wear-resistant layers 4 are installed inside the two sliding guide rails 2 respectively.

[0043] The solution has a simple structure and reasonable design. The wear-resistant layer 4 can effectively reduce the wear between the sliding block 3 and the sliding guide rail 2, extend the service life of the sliding block 3 and the sliding guide rail 2, and reduce costs.

[0044] Preferably, in this embodiment, the wear-resistant layer 4 has a T-shaped cross-section, which can be disposed in the T-shaped groove on the sliding guide rail 2 or wrapped around the sliding block 3.

[0045] Preferably, in this embodiment, the wear-resistant layer 4 is typically made of polytetrafluoroethylene (PTFE) to reduce sliding friction resistance.

[0046] Example 4 Based on any one of Embodiments 2 to 3, in this embodiment, the two buffers each include two buffer blocks 5, and the two pairs of buffer blocks 5 are respectively installed opposite to each other at both ends of the two sliding guide rails 2.

[0047] The solution has a simple structure and reasonable design. When the battery pack collides, two buffers are used to further buffer the battery pack, which has a good buffering effect. It effectively disperses and consumes the collision energy and avoids the collision force being concentrated and transmitted to the battery pack. It can avoid the battery pack making hard contact with the vehicle body structure, greatly reducing the risk of battery pack shell rupture and cell damage. It is safe and reliable, and can also extend the service life of the battery pack and reduce costs.

[0048] Preferably, in this embodiment, the two buffer blocks 5 are made of elastic energy-absorbing materials (such as high-density polyurethane foam or EPP foam) and are fixed to the front and rear ends of the vehicle body longitudinal beam 1, respectively.

[0049] Preferably, in this embodiment, the inner end faces of the two buffer blocks 5 are arranged opposite to the front and rear end faces of the battery pack, and a gap of 5-10mm is reserved between the buffer blocks 5 and the battery pack in the initial state.

[0050] In addition, a 7mm gap is reserved between the buffer block 5 and the battery pack in the initial state described above.

[0051] Preferably, in this embodiment, the two buffer blocks 5 are rectangular blocks, or the two buffer blocks 5 are T-shaped blocks.

[0052] Preferably, in this embodiment, the buffer block 5 is made of EPP (polypropylene plastic) foam material with a density of 300kg / m³. The length of the front buffer block is 150mm and the length of the rear buffer block is 100mm. They are respectively bonded to the inner side of the front and rear ends of the sliding guide rail with structural adhesive to ensure that an 8mm gap is reserved between the inner end face of the buffer block and the front and rear end faces of the sliding block.

[0053] Based on the above scheme, when a vehicle collides, the impact force pushes the battery pack towards the front or rear end of the vehicle's longitudinal beams: First stage: The battery pack first contacts the corresponding end of the buffer block 5. The buffer block 5 absorbs part of the collision energy through its own compression and deformation, thus achieving the initial buffering of the collision force. Second stage: When the collision force reaches the preset threshold (the buffer block is compressed to its limit deformation), the buffer block 5 pushes the battery pack to slide along the sliding guide rail, so that the battery pack avoids the direct impact of the collision source and avoids a hard collision between the battery pack body and the rigid structure of the vehicle body. Finally, the collision energy is further consumed through frictional damping during the sliding process, protecting the safety of the battery pack.

[0054] Example 5 Based on any one of Embodiments 2 to 4, in this embodiment, each of the two buffer components further includes two limiting blocks 6, and the two pairs of limiting blocks 6 are respectively installed opposite to each other at both ends of the two sliding guide rails 2.

[0055] The solution has a simple structure and reasonable design. It uses two pairs of limit blocks to effectively limit the two ends of the battery pack, preventing the battery pack from moving excessively.

[0056] Preferably, in this embodiment, the two limiting blocks 6 are fixedly installed on the vehicle body longitudinal beam 1, and the two corresponding buffer blocks 5 are located between the two limiting blocks 6.

[0057] Preferably, in this embodiment, the two limiting blocks 6 are rectangular blocks, or the two limiting blocks 6 are T-shaped blocks.

[0058] Example 6 Based on Example 1, such as Figure 5 As shown, in this embodiment, the two buffer components each include an elastic buffer frame 7, and the two elastic buffer frames 7 are distributed opposite to each other, respectively used to connect the two sides of the battery pack and the two sides of the vehicle body longitudinal beam 1.

[0059] During assembly, the two elastic buffer frames 7 are respectively connected to the two sides of the vehicle body longitudinal beam 1 and the two sides of the battery pack; When the battery pack is involved in a collision, it will shift. Two elastic buffer frames 7 will buffer the movement of the battery pack, effectively dispersing and consuming the collision energy, preventing the collision force from being concentrated and transmitted to the battery pack. This will prevent the battery pack from making hard contact with the vehicle body structure, greatly reducing the risk of battery pack shell rupture and cell damage. It is safe and reliable, and can also extend the service life of the battery pack and reduce costs.

[0060] Preferably, in this embodiment, the two elastic buffer frames 7 are respectively long rectangular frames that extend along both ends of the vehicle body longitudinal beam 1.

[0061] In addition, the two elastic buffer frames 7 mentioned above are preferably made of rubber material, which has good elasticity, good buffering effect, and low cost.

[0062] Alternatively, an elastic rubber column can be used to replace the aforementioned elastic buffer frame 7.

[0063] The above-described Embodiment 6 and Embodiment 2 are parallel solutions.

[0064] Example 7 Based on embodiment 6, in this embodiment, multiple partitions 8 are fixedly installed at even intervals in the two elastic buffer frames 7 along the direction from one end to the other, and an elastic rhomboid buffer plate 9 is installed between each adjacent partition 8.

[0065] The scheme has a simple structure and reasonable design. It uses multiple diamond-shaped buffer plates 9 set in two elastic buffer frames 7 to further buffer the battery pack, ensuring the buffering effect of the battery pack and further protecting the battery pack, with a better protection effect.

[0066] Preferably, in this embodiment, the plurality of rhomboid buffer plates 9 are made of rubber material, which has good elasticity, good buffering effect, and low cost.

[0067] Preferably, in this embodiment, the multiple partitions 8 are rectangular plates.

[0068] In addition, the aforementioned multiple partitions 8 can also be made of rubber material.

[0069] Example 8 Based on the above embodiments, such as Figure 6 and Figure 7 As shown, this embodiment also provides a battery pack, including a battery pack body 10, and a battery pack collision protection structure as described above, with two buffer components mounted opposite each other on both sides of the battery pack body 10.

[0070] This embodiment also provides a battery pack with a simple structure and reasonable design. It aims to solve the problems of insufficient collision force buffering and easy hard contact in existing battery pack collision protection schemes. It provides a battery pack collision protection structure that can achieve graded protection through buffering and sliding avoidance, thereby improving the collision safety of the battery pack, extending its service life, and reducing costs.

[0071] Example 9 Based on the above embodiments, such as Figure 8 As shown, this embodiment also provides a vehicle body, including the battery pack described above.

[0072] This embodiment also provides a lower body, which has a simple structure and reasonable design. It aims to solve the problems of insufficient collision force buffering and easy hard contact in existing battery pack collision protection schemes. It provides a battery pack collision protection structure that can achieve graded protection through buffering and sliding avoidance, thereby improving the collision safety of the battery pack, extending its service life, and reducing costs.

[0073] Example 10 Based on the above embodiments, this embodiment also provides a vehicle, including the lower body as described above.

[0074] This embodiment also provides a car with a simple structure and reasonable design, which aims to solve the problems of insufficient collision force buffering and easy hard contact in existing battery pack collision protection schemes. It provides a battery pack collision protection structure that can achieve graded protection through buffering and sliding avoidance, thereby improving the collision safety of the battery pack, extending its service life, and reducing costs.

[0075] This utility model provides a battery pack collision protection structure, a battery pack, a lower vehicle body, and a car, the assembly and buffering principles of which are as follows: (1) Option 1: During assembly, the two sliding guide rails 2 are fixedly connected to both sides of the longitudinal beam 1 of the vehicle body, and the two sliding blocks 3 are connected to both sides of the battery pack, and the two sliding blocks 3 are slidably connected to the two sliding guide rails 2 respectively. When the battery pack is involved in a collision, the battery pack is displaced, and the two sliding blocks 3 slide along the two sliding guide rails 2 respectively. At the same time, the buffer further cushions the battery pack, effectively dispersing and consuming the collision energy, preventing the collision force from being concentrated and transmitted to the battery pack. This avoids the battery pack from making hard contact with the vehicle body structure, greatly reducing the risk of battery pack shell rupture and cell damage. It is safe and reliable, and can also extend the service life of the battery pack and reduce costs.

[0076] (2) Option 2: During assembly, the two elastic buffer frames 7 are respectively connected to the two sides of the vehicle body longitudinal beam 1 and the two sides of the battery pack; When the battery pack is involved in a collision, it shifts. Two elastic buffer frames 7 cushion the movement of the battery pack, while multiple diamond-shaped buffer plates 9 further cushion the battery pack, effectively dispersing and dissipating the collision energy and preventing the collision force from being concentrated and transmitted to the battery pack. This avoids hard contact between the battery pack and the vehicle body structure, significantly reducing the risk of battery pack shell rupture and cell damage. It is safe and reliable, and can also extend the service life of the battery pack and reduce costs.

[0077] Side impact tests were conducted on vehicles equipped with this protective structure (collision speed 50 km / h): 0.02 seconds after the collision: The battery pack moves towards the rear end of the vehicle's longitudinal beam due to the impact force, and comes into contact with the rear buffer block, which then begins to compress. 0.05s after the collision: The buffer block is compressed to its limit deformation (compression amount 60mm), absorbing about 40% of the collision energy; 0.05 - 0.1s after the collision: The buffer block pushes the battery pack to slide backward along the sliding guide rail, with a sliding distance of about 150mm. During this period, the sliding friction damping consumes the remaining collision energy. After the test: the battery pack casing was not cracked, the internal cell voltage and temperature were within the normal range, there was no leakage or fire, and the protection effect met expectations.

[0078] This utility model provides a battery pack collision protection structure, a battery pack, a lower body, and a car, with the following beneficial effects: 1. Tiered protection: Through the tiered protection design of "buffer block energy absorption + battery pack sliding avoidance", the collision energy is effectively dispersed and consumed, and the collision force is prevented from being concentrated and transmitted to the battery pack. 2. High safety: It can avoid hard contact between the battery pack and the vehicle body structure, greatly reducing the risk of battery pack casing rupture and cell damage; 3. Simple structure: The protective function is achieved only through the cooperation of the buffer block and the sliding guide rail, without the need for complex drive components, resulting in low cost and easy mass production; 4. High adaptability: The size of the buffer block and the length of the sliding guide rail can be adjusted according to the battery pack size and installation space of different vehicle models, making it highly adaptable.

[0079] While embodiments or examples of this disclosure have been described with reference to the accompanying drawings, it should be understood that the above embodiments are merely exemplary embodiments or examples, and the scope of this utility model is not limited by these embodiments or examples, but only by the granted claims and their equivalents. Various elements in the embodiments or examples may be omitted or replaced by their equivalents. Furthermore, the steps may be performed in a different order than that described in this disclosure. Further, various elements in the embodiments or examples may be combined in various ways. Importantly, as the technology evolves, many elements described herein can be replaced by equivalents that appear after this disclosure.

Claims

1. A battery pack collision protection structure, characterized in that, include: Two buffer components are distributed opposite to each other and are used to connect the two sides of the battery pack to the two sides of the vehicle body longitudinal beam (1); The two buffer components each include a sliding guide rail (2), a sliding block (3) and a buffer. The two sliding guide rails (2) are arranged opposite to each other and are used to connect the two sides of the vehicle body longitudinal beam (1). The two sliding blocks (3) are slidably mounted on the two sliding guide rails (2) respectively and are used to connect the two sides of the battery pack. The two buffers are distributed at the ends of the two sliding guide rails (2) respectively and are used to buffer the collision of the battery pack.

2. The battery pack collision protection structure according to claim 1, characterized in that, Wear-resistant layers (4) are installed inside the two sliding guide rails (2).

3. The battery pack collision protection structure according to claim 1, characterized in that, The two buffers each include two buffer blocks (5), and the two pairs of buffer blocks (5) are respectively installed opposite each other at both ends of the two sliding guide rails (2).

4. The battery pack collision protection structure according to claim 1, characterized in that, Each of the two buffer components also includes two limiting blocks (6), and the two pairs of limiting blocks (6) are respectively installed opposite to each other at both ends of the two sliding guide rails (2).

5. The battery pack collision protection structure according to claim 1, characterized in that, The two buffer components each include an elastic buffer frame (7), and the two elastic buffer frames (7) are distributed opposite to each other and are used to connect the two sides of the battery pack with the two sides of the vehicle body longitudinal beam (1).

6. The battery pack collision protection structure according to claim 5, characterized in that, Multiple partitions (8) are fixedly installed evenly at intervals in the two elastic buffer frames (7) along the direction from one end to the other, and an elastic diamond-shaped buffer plate (9) is installed between each pair of adjacent partitions (8).

7. A battery pack, comprising a battery pack body (10), characterized in that, It also includes a battery pack collision protection structure as described in any one of claims 1-6, wherein two buffer components are mounted opposite each other on both sides of the battery pack body (10).

8. A vehicle body, characterized in that, Includes the battery pack as described in claim 7.

9. A car, characterized in that, Includes the undercarriage as described in claim 8.

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