Battery pack anti-collision protection devices and new energy vehicles

Abstract

This application provides a battery pack anti-collision protection device and a new energy vehicle. The battery pack anti-collision protection device includes: a base plate, an end cap, a protective net, and a protective plate; the base plate is used to mount the battery pack; the end cap is positioned above the base plate, its projection covering the battery pack; the protective net is positioned between the base plate and the end cap, surrounding the battery pack; the protective plate is positioned around the protective net; wherein the protective plate comprises multiple independent pieces, which are slidably positioned in various directions on the base plate, and a buffer damping mechanism is provided between the base plate and the protective plates. This application provides higher safety protection, effectively avoiding the risk of battery pack leakage caused by fragment impacts, and protecting the life and property safety of vehicle occupants.

Description

Technical Field

[0001] This application relates to the field of new energy vehicle technology, and more specifically, to a battery pack anti-collision protection device and a new energy vehicle. Background Technology

[0002] New energy vehicles refer to vehicles that use unconventional vehicle fuels as their power source. New energy vehicles include pure electric vehicles, range-extended electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, and hydrogen engine vehicles.

[0003] Most mainstream private new energy vehicles rely on pure electric battery packs to drive motors. While pure electrification offers advantages such as quiet operation and environmental friendliness, it also presents certain risks. After a severe impact, the battery pack may explode and burn, potentially affecting the safety of passengers. Furthermore, existing new energy vehicle battery packs often use a relatively simple rigid casing for protection, as illustrated in Chinese patent CN201810750356.5 – a protective structure for hybrid new energy vehicles. While a rigid casing can withstand some impact, if it breaks, fragments can easily enter the battery pack, causing electrolyte leakage and significant heat generation, potentially leading to more dangerous spontaneous combustion and explosion. Utility Model Content

[0004] This application provides a battery pack anti-collision protection device and a new energy vehicle to solve the problem that new energy batteries in the prior art are prone to fragment impacts and safety hazards due to relying on a single rigid protective shell.

[0005] A battery pack anti-collision protection device according to this application includes:

[0006] Base plate, used to house the battery pack;

[0007] End cap, the end cap is set above the base plate, and its projection covers the battery pack;

[0008] A protective net is installed between the base plate and the end cap, and surrounds the battery pack.

[0009] The protective plate is set on the periphery of the protective net; the protective plate consists of multiple independent pieces, which are slidably set in various directions on the base plate, and a buffer damping mechanism is set between the base plate and the protective plate.

[0010] In some embodiments, the upper surface of the base plate is provided with a T-shaped groove extending to the side end face, and the lower end of the protective plate is provided with a T-shaped protrusion, which is slidably connected to the T-shaped groove; a buffer damping mechanism is provided in the T-shaped groove, one end of the buffer damping mechanism is fixedly connected to the inner end face of the T-shaped groove, and the other end is fixedly connected to the inner side face of the T-shaped protrusion.

[0011] In some embodiments, the buffer damping mechanism includes: a damper and a first spring, the first spring being sleeved on the outside of the damper; the inner ends of the damper and the first spring are both fixedly connected to the inner end face of the T-slot, and the outer ends of the damper and the first spring are both fixedly connected to the inner side face of the T-protrusion.

[0012] In some embodiments, the protective plate is an explosion-proof plate with a polyurethane interlayer in its center.

[0013] In some embodiments, the protective net includes: posts and a mesh surface; multiple posts are provided and fixedly installed on the upper surface of the base plate; the mesh surface is fixedly connected to the multiple posts and supported by the posts around the battery pack; the top surface of the posts is provided with mounting holes, and a fixing mechanism for connecting the end cap and the posts is provided in the mounting holes.

[0014] In some embodiments, the side of the column is provided with a first mating hole that connects to the mounting hole;

[0015] The fixing mechanism includes: a locking rod, the top of which is provided with a protruding edge for pressing the end cap, the inside of which is hollow to form a placement chamber, and an elastic fixing structure is provided inside the placement chamber. The end of the elastic fixing structure can extend laterally out of the placement chamber and be inserted into the first mating hole.

[0016] In some embodiments, the elastic fixing structure includes: a vertical plate, a sliding sleeve, and a second spring; a horizontally mounted mounting rod is provided on the side of the vertical plate, and the sliding sleeve is slidably mounted on the mounting rod; the second spring is provided between the vertical plate and the sliding sleeve; a second mating hole is provided on the side of the placement compartment corresponding to the sliding sleeve; the sliding sleeve can extend out of the second mating hole and engage with the first mating hole under the elastic force of the second spring.

[0017] In some embodiments, the top surface of the locking bar is provided with a rope passage hole that connects to the placement compartment. A pull rope is threaded through the rope passage hole, one end of which is connected to a sliding sleeve, and the other end is connected to a pull ring, which is located on the top outer side of the locking bar.

[0018] In some embodiments, the end of the sliding sleeve is closed to form an end cap, and a pull rope is fixedly connected to the inner wall of the end cap; a through hole is provided in the mounting rod and the vertical plate, and the pull rope passes through the through hole.

[0019] According to another aspect of this application, a new energy vehicle is provided, including: the battery pack anti-collision protection device as described above.

[0020] Applying the technical solution of this application, the battery pack anti-collision protection device includes: a base plate, an end cap, a protective net, and a protective plate; the base plate is used to mount the battery pack; the end cap is positioned above the base plate, its projection covering the battery pack; the protective net is positioned between the base plate and the end cap, surrounding the battery pack; the protective plate is positioned around the protective net; wherein, the protective plate comprises multiple independent pieces, which are slidably positioned in various directions on the base plate, and a buffer damping mechanism is provided between the base plate and the protective plate. This application provides all-round protection for the battery pack from top to bottom and sides through the base plate, end cap, protective net, and protective plate, and the sides, where the main source of impact is located, form a dual impact-resistant structure of the protective plate and the protective net. The inner protective net can effectively intercept fragments generated by the protective plate, improving the protection effect and avoiding the risk of leakage from the battery pack due to fragment impact. At the same time, the protective plate itself also adopts a sliding installation method and is buffered by a buffer damping mechanism, improving its impact resistance, effectively dissipating energy, further preventing fragment generation, and improving the safety protection effect. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is an isometric schematic diagram of the overall structure of the battery pack anti-collision protection device according to an embodiment of this application;

[0024] Figure 2 It shows Figure 1 Axonometric view of the battery pack anti-collision protection device after removing the end cap;

[0025] Figure 3 This paper shows a cross-sectional schematic diagram of the connection structure between the protective plate and the base plate of the battery pack anti-collision protection device according to an embodiment of this application;

[0026] Figure 4 This paper shows a cross-sectional schematic diagram of the fixing mechanism of the battery pack anti-collision protection device according to an embodiment of this application;

[0027] Figure 5 This paper shows a cross-sectional schematic diagram of the overall structure of the fixing mechanism of the battery pack anti-collision protection device according to an embodiment of this application;

[0028] Figure 6 It shows Figure 5 Enlarged view of the circled area.

[0029] The above figures include the following reference numerals:

[0030] 1. Base plate; 11. T-slot; 2. End cap; 3. Protective net; 31. Post; 311. Mounting hole; 312. First mating hole; 32. Net surface; 33. Fixing mechanism; 331. Locking rod; 3311. Second mating hole; 3312. Rope passage hole; 332. Vertical plate; 333. Sliding sleeve; 334. Second spring; 335. Mounting rod; 336. Pull rope; 337. Pull ring; 4. Protective plate; 41. T-shaped protrusion; 42. Polyurethane interlayer; 5. Buffer damping mechanism; 51. Damper; 52. First spring; 6. Battery pack. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0033] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, rotated 90 degrees, or in other orientations, and the spatial relative descriptions used herein will be interpreted accordingly.

[0034] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] like Figures 1 to 6 As shown, this application discloses a battery pack anti-collision protection device, which includes: a base plate 1 for mounting a battery pack 6; an end cap 2 disposed above the base plate 1, its projection covering the battery pack 6; a protective net 3 disposed between the base plate 1 and the end cap 2, surrounding the battery pack 6; and a protective plate 4 disposed around the protective net 3. The protective plate 4 comprises multiple independent pieces, which are slidably disposed in various directions of the base plate 1, and a buffer damping mechanism 5 is provided between the base plate 1 and the protective plate 4.

[0037] Through the above structural design, this application provides all-around protection for the battery pack 6 from the top, bottom, and sides using the base plate 1, end cap 2, protective mesh 3, and protective plate 4. The sides, the primary source of impact, form a dual impact-resistant structure with the protective plate 4 and protective mesh 3. The inner protective mesh 3 effectively intercepts fragments generated by the protective plate 4, improving the protective effect and preventing leakage risk from the battery pack 6 due to fragment impact. Simultaneously, the protective plate 4 itself adopts a sliding installation method and is buffered by a damping mechanism 5, improving impact resistance and effectively dissipating energy, further preventing fragment generation and enhancing safety protection.

[0038] In some embodiments of this application, such as Figures 1 to 3 As shown, the upper surface of the base plate 1 is provided with a T-shaped groove 11 extending to the side end face. The lower end of the protective plate 4 is provided with a T-shaped protrusion 41. The T-shaped protrusion 41 and the T-shaped groove 11 are slidably engaged, allowing the protective plate 4 to be movably mounted on the base plate 1. Figure 2 and Figure 3As shown, the buffer damping mechanism 5 is installed within the T-slot 11, which effectively absorbs and mitigates the impact on the protective plate 4. Specifically, the buffer damping mechanism 5 is entirely embedded within the T-slot 11 of the base plate 1 to save installation space and prevent interference or collision with other components. One end of the buffer damping mechanism 5 is fixedly connected to the inner end face of the T-slot 11, and the other end is fixedly connected to the inner side face of the T-shaped protrusion 41. Through this fixed connection at both ends, the protective plate 4 is reliably installed on the base plate 1, preventing the protective plate 4 from easily detaching and improving the stability of the device.

[0039] In some embodiments of this application, such as Figure 3 As shown, the buffer damping mechanism 5 includes a damper 51 and a first spring 52. The first spring 52 is sleeved on the outside of the damper 51 and is used to buffer and dissipate energy together with the damper 51 to compensate for the insufficient buffering capacity that the damper 51 may have alone. (Reference) Figure 3 As shown, the inner ends of the damper 51 and the first spring 52 are both fixedly connected to the inner end face of the T-slot 11, and the outer ends of the damper 51 and the first spring 52 are both fixedly connected to the inner side face of the T-protrusion 41. The connection method can be bolt fixing or hook ring 337 fixing; the means are not limited as long as a fixed connection can be achieved. Among them, the damper 51 is a commercially available existing device that can be easily obtained by those skilled in the art, such as a pneumatic or hydraulic damping rod type damper 51. It is not the inventive point of this application, and there is no problem of misunderstanding, so it will not be described in detail here.

[0040] In some embodiments of this application, such as Figure 3 As shown, the protective plate 4 is an explosion-proof plate with a polyurethane interlayer 42 in its center. By incorporating the polyurethane interlayer 42, fragments from the protective plate 4 can be effectively prevented from flying out due to impact, thereby reducing the risk of the battery pack 6 being impacted by fragments. Understandably, the inner and outer sides of the polyurethane interlayer 42 can be made of non-metallic or metallic materials with a certain degree of hardness and strength, and the adhesive effect of the polyurethane interlayer 42 prevents fragments from flying out after a collision.

[0041] In some embodiments of this application, such as Figure 3 As shown, the protective net 3 includes: posts 31 and a mesh surface 32. Multiple posts 31 are provided and fixedly installed on the upper surface of the base plate 1. The mesh surface 32 is fixedly connected to the multiple posts 31 and supported by the posts 31 around the battery pack 6. In this application... Figure 3 In the illustrated embodiment, four uprights 31 are provided, arranged in a rectangular shape, to support the protective netting 3 into a rectangular structure. The top surface of each upright 31 has a mounting hole 311, within which a fixing mechanism 33 is provided to connect the end cap 2 and the upright 31, facilitating quick installation and fixing of the end cap 2.

[0042] In some embodiments of this application, reference is made to Figures 4 to 6 As shown, the side of the column 31 is provided with a first mating hole 312 that connects to the mounting hole 311. The fixing mechanism 33 includes a locking rod 331. The top of the locking rod 331 is provided with a protruding edge for pressing the end cap 2. The locking rod 331 is hollow inside to form a placement chamber. An elastic fixing structure is provided inside the placement chamber. The end of the elastic fixing structure can extend laterally out of the placement chamber and engage with the first mating hole 312, so that the locking rod 331 is locked onto the column 31. Thus, the fixing mechanism 33 can quickly achieve the installation and fixing of the end cap 2, which facilitates the assembly of the device.

[0043] In some embodiments of this application, reference is made to Figures 4 to 6 As shown, the elastic fixing structure includes: a vertical plate 332, a sliding sleeve 333, and a second spring 334. A horizontally positioned mounting rod 335 is provided on the side of the vertical plate 332, and the sliding sleeve 333 is slidably mounted on the mounting rod 335. The second spring 334 is positioned between the vertical plate and the sliding sleeve 333. A second mating hole 3311 is provided on the side of the locking rod 331 corresponding to the sliding sleeve 333. In its natural state, the second spring 334 is pre-tightened and has a certain amount of compression. Therefore, the sliding sleeve 333 can extend out of the second mating hole 3311 and engage with the first mating hole 312 under the elastic force of the second spring 334, thereby fixing the locking rod 331 within the column 31 to achieve the connection between the end cap 2 and the column 31.

[0044] In some embodiments of this application, reference is made to Figures 4 to 6 As shown, the top surface of the locking rod 331 has a rope hole 3312 connecting to the installation compartment. A pull rope 336 is threaded through the rope hole 3312. One end of the pull rope 336 is connected to a sliding sleeve 333, and the other end is connected to a pull ring 337, which is located on the outer top of the locking rod 331. By setting the pull rope 336 and the pull ring 337, the sliding sleeve 333 can be easily pulled manually, thereby disengaging the sliding sleeve 333 from the first mating hole 312, so that the locking rod 331 can be quickly pulled out, realizing the quick disassembly of the end cover 2 and the column 31.

[0045] In some embodiments of this application, reference is made to Figures 4 to 6 As shown, the end of the sliding sleeve 333 is closed to form an end cap, and the pull rope 336 is fixedly connected to the inner wall of the end cap. Through holes are provided in the mounting rod 335 and the vertical plate 332, through which the pull rope 336 passes. By providing through holes, the extension direction of the pull rope 336 can be made collinear with the movement direction of the sliding sleeve 333, thereby facilitating the transmission of pulling force, achieving more labor-saving operation, improving the assembly and maintenance speed of the device, and making it easier to use.

[0046] According to another aspect of this application, this application also discloses a new energy vehicle that includes a battery pack anti-collision protection device as shown in any of the above embodiments. Through this battery pack anti-collision protection device, the new energy vehicle of this application can effectively reduce the probability of the battery pack 6 being punctured by fragments of the protective plate 4 during a collision, thereby improving the vehicle's safety and explosion-proof rating and protecting the lives and property of the occupants.

[0047] In summary, the battery pack anti-collision protection device includes: a base plate, an end cap, a protective net, and a protective plate. The base plate is used to mount the battery pack. The end cap is positioned above the base plate, its projection covering the battery pack. The protective net is positioned between the base plate and the end cap, surrounding the battery pack. The protective plate is positioned around the protective net. The protective plate comprises multiple independent pieces, each slidingly positioned in different directions on the base plate, with a buffer damping mechanism between the base plate and the protective plates. This application provides all-around protection for the battery pack from above, below, and sides through the base plate, end cap, protective net, and protective plate. The sides, the primary source of impact, form a dual impact-resistant structure of the protective plate and the protective net. The inner protective net effectively intercepts fragments generated by the protective plate, improving the protective effect and preventing leakage risk from the battery pack due to fragment impact. Simultaneously, the protective plate itself is also slidably installed and buffered by a damping mechanism, improving its impact resistance and effectively dissipating energy, further preventing fragment generation and enhancing safety protection.

[0048] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery pack anti-collision protection device, characterized by, include: A base plate (1) is used to mount a battery pack (6); End cap (2), the end cap (2) is disposed above the base plate (1), and its projection covers the battery pack (6); A protective net (3) is disposed between the base plate (1) and the end cap (2) and surrounds the battery pack (6); A protective plate (4) is provided on the periphery of the protective net (3); wherein the protective plate (4) comprises multiple independent pieces, and the multiple protective plates (4) are slidably disposed in various directions of the base plate (1), and a buffer damping mechanism (5) is provided between the base plate (1) and the protective plate (4).

2. The battery pack crash protection device according to claim 1, characterized by The upper surface of the base plate (1) is provided with a T-shaped groove (11) extending to the side end face, and the lower end of the protective plate (4) is provided with a T-shaped protrusion (41). The T-shaped protrusion (41) is slidably connected to the T-shaped groove (11). The buffer damping mechanism (5) is provided in the T-shaped groove (11). One end of the buffer damping mechanism (5) is fixedly connected to the inner end face of the T-shaped groove (11), and the other end is fixedly connected to the inner side face of the T-shaped protrusion (41).

3. The battery pack crash protection device of claim 2, wherein The buffer damping mechanism (5) includes a damper (51) and a first spring (52), the first spring (52) being sleeved on the outside of the damper (51); the inner ends of the damper (51) and the first spring (52) are both fixedly connected to the inner end face of the T-slot (11), and the outer ends of the damper (51) and the first spring (52) are both fixedly connected to the inner side face of the T-shaped protrusion (41).

4. The battery pack crash protection device according to any one of claims 1 to 3, characterized in that, The protective plate (4) is an explosion-proof plate, and a polyurethane interlayer (42) is provided in its center.

5. The battery pack crash protection device of claim 1, wherein The protective net (3) includes: a column (31) and a mesh surface (32); multiple columns (31) are provided and fixedly installed on the upper surface of the base plate (1); the mesh surface (32) is fixedly connected to multiple columns (31) and supported by the columns (31) around the battery pack; the top surface of the column (31) is provided with a mounting hole (311), and a fixing mechanism (33) connecting the end cap (2) and the column (31) is provided in the mounting hole (311).

6. The battery pack crash protection device of claim 5, wherein The side of the column (31) is provided with a first mating hole (312) that communicates with the mounting hole (311); The fixing mechanism (33) includes: a locking rod (331); the top of the locking rod (331) is provided with a protruding edge that presses against the end cap (2), the interior of the locking rod (331) is hollow to form a placement chamber, the placement chamber is provided with an elastic fixing structure, the end of the elastic fixing structure can extend laterally out of the placement chamber and be inserted into the first mating hole (312).

7. The battery pack crash protection device of claim 6, wherein The elastic fixing structure includes: a vertical plate (332), a sliding sleeve (333), and a second spring (334); a horizontal mounting rod (335) is provided on the side of the vertical plate (332), and the sliding sleeve (333) is slidably mounted on the mounting rod (335); the second spring (334) is disposed between the vertical plate (332) and the sliding sleeve (333); a second mating hole (3311) is provided on the side of the locking rod (331) corresponding to the sliding sleeve (333); the sliding sleeve (333) can extend out of the second mating hole (3311) and be inserted into the first mating hole (312) under the elastic force of the second spring (334).

8. The battery pack crash protection device of claim 7, wherein The top surface of the locking rod (331) is provided with a rope hole (3312) that connects to the placement compartment. A pull rope (336) is threaded through the rope hole (3312). One end of the pull rope (336) is connected to the sliding sleeve (333), and the other end is connected to a pull ring (337). The pull ring (337) is located on the top outer side of the locking rod (331).

9. The battery pack crash protection device of claim 8, wherein, The end of the sliding sleeve (333) is closed to form an end cap, and the pull rope (336) is fixedly connected to the inner wall of the end cap; the mounting rod (335) and the vertical plate (332) are provided with through holes, and the pull rope (336) passes through the through holes.

10. A new energy vehicle, characterized in that, include: The battery pack anti-collision protection device as described in any one of claims 1 to 9.

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