New energy automobile battery box collapsible protection beam structure

Abstract

The utility model discloses a new energy automobile battery box collapsible type protection beam structure, including the side beam of installing in the front, rear side of battery box and the combined beam of installing in both sides side beam, install energy absorption device between side beam with combined beam. When the vehicle suffers side collision, first through the body longitudinal beam to complete first heavy impact buffering, after longitudinal beam deformation to combined beam position, the impact force drives the energy absorption block in energy absorption device and spring synchronous compression deformation, utilize the elastic deformation of rubber and the elastic potential energy of spring and absorb most of the impact energy, and the residual impact force triggers the combined beam body to carry out directional collapse through the collapse groove, and the bending deformation of cooperation beam body itself completes secondary energy resolution. This grading energy absorption mode can maximize the absorption of collision energy, effectively block the conduction of impact force to the battery box, significantly improve the integrity of the battery box in side collision, fundamentally reduce the risk of battery damage.

Description

Technical Field

[0001] This utility model relates to a collapsible protective beam structure for a new energy vehicle battery box. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the safety performance of power batteries, as the core power source, is directly related to vehicle driving safety and the life protection of passengers, and has become a focus of industry attention. Among them, the battery box, as the carrier and protector of the power battery, is a key aspect of the safety design of new energy vehicles in terms of whether it can maintain structural integrity and avoid dangerous situations such as battery pack damage, leakage, or even fire and explosion when the vehicle is involved in a collision, especially a side collision.

[0003] In current battery box protection designs for new energy vehicles, most rely on basic structures such as vehicle body longitudinal beams and anti-collision beams to absorb collision energy, while specific side protection measures for the battery box itself are relatively limited. Traditional protective structures often use rigidly connected beams directly fixed to the outside of the battery box. Although this provides some support, it suffers from low energy absorption efficiency and direct impact transmission when encountering side impacts. When the vehicle is subjected to a collision force from the side, after the longitudinal beams absorb some energy, the remaining impact force is quickly transmitted to the battery box protection structure. The rigid beams are unable to effectively buffer the impact, and are prone to direct deformation that punctures the battery box, or the entire battery box may be damaged due to insufficient energy dissipation.

[0004] Based on the above situation, there is an urgent need for a collapsible protective beam structure for new energy vehicle battery boxes that is specifically designed for side protection of battery boxes, has high energy absorption capacity, strong structural adaptability, and integrated functions. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a collapsible protective beam structure for new energy vehicle battery boxes that is specifically designed for side protection of battery boxes, has high energy absorption capacity, strong structural adaptability and integrated functions.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] A collapsible protective beam structure for a new energy vehicle battery box includes side beams installed on the front and rear sides of the battery box, and a combined beam installed on both sides of the side beams, with an energy-absorbing device installed between the side beams and the combined beam.

[0008] Preferably, the surface of the side beam is drilled with screw holes for connecting the battery box.

[0009] Preferably, the surface of the side beam is further provided with a wire guide groove for passing through the battery box wiring harness.

[0010] Preferably, both ends of the side beam are bent vertically toward the side away from the battery box, forming a connecting part after bending, through which the energy absorption device is detachably installed.

[0011] Preferably, the energy-absorbing device includes an energy-absorbing block and a spring. The energy-absorbing block has a through mounting hole at its center. The spring is inserted into the mounting hole, with one end of the spring abutting against the connecting part and the other end abutting against the composite beam.

[0012] Preferably, the composite beam includes a beam body, with connecting plates at both ends of the beam body. Bolts are installed between the connecting plates, energy-absorbing blocks, and connecting parts. A collapse groove is provided on the side of the beam body away from the side beam, and an installation groove is provided on the side of the beam body facing the side beam, through which an energy-absorbing strip is installed.

[0013] Preferably, the mounting groove is a T-shaped groove, the energy-absorbing strip is inserted into the T-shaped groove, and the end of the energy-absorbing strip away from the T-shaped groove protrudes out of the beam.

[0014] Preferably, the collapse groove is a rectangular groove that extends through the length of the beam.

[0015] Preferably, there are two or more collapse grooves arranged on the upper and lower sides.

[0016] The beneficial effects of this utility model are:

[0017] 1. Staged energy absorption design significantly improves collision protection capabilities.

[0018] This structure constructs a three-stage energy absorption path: "longitudinal beam pre-energy absorption—energy absorption device main energy absorption—composite beam collapse secondary energy absorption," completely solving the problems of single energy absorption and low efficiency in traditional protective structures. When a vehicle suffers a side collision, the longitudinal beams of the vehicle body first complete the first layer of impact buffering. After the longitudinal beams deform to the position of the composite beam, the impact force first drives the energy-absorbing blocks and springs in the energy-absorbing device to compress and deform synchronously, using the elastic deformation of the rubber and the elastic potential energy of the spring to absorb most of the impact energy. The remaining impact force then triggers the composite beam to collapse directionally through the collapse groove, and the beam's own bending deformation completes the secondary energy dissipation. This staged energy absorption mode can maximize the absorption of collision energy, effectively block the transmission of impact force to the battery box, significantly improve the integrity of the battery box in side collisions, and fundamentally reduce the risk of battery damage.

[0019] 2. Optimized structural design enhances protection, safety, and adaptability.

[0020] In terms of protective details, the energy-absorbing strips on the side of the composite beam facing the battery box form a "soft protective barrier". When the beam undergoes bending deformation, the energy-absorbing strips make flexible contact with the side of the battery box, which can effectively prevent the beam from causing puncture damage to the battery box after torque deformation, further improving the safety of protection. At the same time, the energy-absorbing strips are installed using a T-slot snap-fit ​​method, which not only ensures the stability of the installation, but also facilitates later replacement and maintenance.

[0021] 3. Functional integration enhances the overall rationality of vehicle design.

[0022] The specially designed cable trays on the side beams provide a dedicated routing channel for the battery box wiring harness, effectively preventing interference between the harness and the protective beam structure. This simplifies the vehicle wiring process, reduces the risk of damage to the harness due to collisions and compression, and enhances the safety and reliability of the vehicle's electrical system. The through-hole design of the energy-absorbing blocks in the energy-absorbing device further optimizes the compression deformation path of the energy-absorbing blocks, ensuring stable elastic deformation under impact and preventing a decrease in energy absorption due to obstructed deformation. The energy-absorbing blocks are made of polyurethane rubber, and the energy-absorbing strips are made of EPDM rubber, possessing excellent aging resistance and impact resistance, maintaining stable energy absorption performance over a long period and extending the service life of the protective structure. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a perspective view of the device;

[0025] Figure 2 This is a 3D view of the side beam;

[0026] Figure 3 This is a 3D view of the energy-absorbing block;

[0027] Figure 4 This is a magnified view of point A. Detailed Implementation

[0028] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0029] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0030] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, in the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "socket," "connect," "through," and "plug-in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] See Figure 1 The diagram shows a collapsible protective beam structure for a new energy vehicle battery box, including side beams 1 installed on the front and rear sides of the battery box, and a combined beam 2 installed on both sides of the side beams 1. An energy-absorbing device 3 is installed between the side beams 1 and the combined beam 2.

[0034] In the above technical solution, the side beams are installed on the front and rear sides of the battery box by fixing with screws. The front side of the battery box corresponds to the forward direction of the vehicle. When the vehicle is subjected to front and rear impacts, the collision energy is absorbed by the vehicle's anti-collision beams and longitudinal beams. Therefore, in this technical solution, the energy absorption device and the combined beam are mainly used for the side collision energy absorption of the vehicle.

[0035] When a vehicle is subjected to a side impact, the vehicle's longitudinal beams absorb the first layer of energy. When the longitudinal beams deform to the position of the composite beam, the composite beam then absorbs the impact. The impact force is absorbed by the deformation of the energy-absorbing device and then absorbed a second time by the collapse of the composite beam, which greatly maintains the integrity of the battery box when the vehicle is subjected to a side impact.

[0036] See Figure 2 and Figure 3 As shown, the surface of the side beam 1 is drilled with screw holes 11 for connecting the battery box.

[0037] In the above technical solution, the side beam 1 is made of aluminum alloy with a thickness between 6mm and 8mm.

[0038] The surface of the side beam 1 is also provided with a wire passage groove 12 for passing through the battery box wiring harness.

[0039] The above technical solution is mainly designed to facilitate vehicle wiring.

[0040] Both ends of the side beam 1 are bent vertically toward the side away from the battery box, forming a connecting part 13 after bending. The energy absorption device 3 is detachably installed through the connecting part 13.

[0041] The energy-absorbing device 3 includes an energy-absorbing block 31 and a spring 32. The energy-absorbing block 31 is made of elastic rubber, preferably polyurethane rubber. A through mounting hole 33 is provided in the middle of the energy-absorbing block 31. The spring 32 is inserted into the mounting hole 32, with one end of the spring 32 abutting against the connecting part 13 and the other end abutting against the composite beam 2.

[0042] In the above technical solution, the energy-absorbing block 31 can absorb collision energy after elastic deformation. In conjunction with the spring 32, when the energy-absorbing block 31 is elastically compressed, the spring 32 is also elastically compressed, providing a certain energy absorption effect.

[0043] Furthermore, the design of the mounting hole 33 is more conducive to the compression deformation of the energy absorption block 31.

[0044] See Figure 4 As shown, the composite beam 2 includes a beam body 21, which is made of aluminum alloy and has a thickness of 6mm to 12mm. Connecting plates 22 are provided at both ends of the beam body 21. Bolts 23 are installed between the connecting plates 22, the energy-absorbing block 31 and the connecting part 13. A collapse groove 24 is provided on the side of the beam body 21 away from the side beam 1, and an installation groove 25 is provided on the side of the beam body 21 facing the side beam 1. An energy-absorbing strip 26 is installed through the installation groove 25.

[0045] In the above technical solution, when the beam 21 is subjected to lateral impact, it can undergo collapse deformation through the collapse groove 24. After the collapse groove 24 is deformed, the beam 21 is subjected to pressure and then bends. During the bending deformation, the energy-absorbing strip 26 makes soft contact with the side of the battery box, reducing the puncture damage caused by the torque deformation of the beam 21, and further protecting the battery box.

[0046] During installation, the end face of the energy-absorbing strip 26 away from the beam 21 should maintain a distance from the battery box.

[0047] The energy-absorbing strip 26 is made of elastic rubber, preferably EPDM rubber.

[0048] The mounting groove 25 is a T-shaped groove, and the energy-absorbing strip 26 is inserted into the T-shaped groove. The end of the energy-absorbing strip away from the T-shaped groove protrudes from the outside of the beam.

[0049] The above technical solution is mainly to facilitate the assembly and molding of this device. During assembly, the energy-absorbing strip 26 slides into the T-shaped groove from one side. After assembly, the sliding of the energy-absorbing strip 26 is limited by the energy-absorbing blocks 31 at both ends, without the need for other fixing methods.

[0050] The collapsing groove 24 is a rectangular groove that extends through the length of the beam.

[0051] There are two collapse grooves 24, one on the top and one on the bottom.

[0052] The purpose of the crumple zone 24 is twofold: first, to reduce the material cost and weight of the beam 21; and second, to allow it to crumple and deform to absorb energy when subjected to impact.

[0053] 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.

[0054] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0055] 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.

[0056] 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.

[0057] It should be noted that the terms "first," "second," etc., used 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 in sequences other than those illustrated or described herein.

[0058] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A collapsible protective beam structure for a new energy vehicle battery box, characterized in that: It includes side beams installed on the front and rear sides of the battery box, and a combined beam installed on both sides of the side beams, with an energy absorption device installed between the side beams and the combined beam.

2. The collapsible protective beam structure for a new energy vehicle battery box according to claim 1, characterized in that: The surface of the side beam is drilled with screw holes for connecting the battery box.

3. The collapsible protective beam structure for a new energy vehicle battery box according to claim 2, characterized in that: The surface of the side beam is also provided with a wire passage groove for the battery box wiring harness to pass through.

4. The collapsible protective beam structure for a new energy vehicle battery box according to claim 1, characterized in that: Both ends of the side beam are bent vertically toward the side away from the battery box, forming a connecting part after bending. The energy absorption device is detachably installed through the connecting part.

5. The collapsible protective beam structure for a new energy vehicle battery box according to claim 4, characterized in that: The energy-absorbing device includes an energy-absorbing block and a spring. A through mounting hole is provided in the middle of the energy-absorbing block. The spring is inserted into the mounting hole, with one end of the spring abutting against the connecting part and the other end abutting against the composite beam.

6. The collapsible protective beam structure for a new energy vehicle battery box according to claim 1, characterized in that: The composite beam includes a beam body with connecting plates at both ends. Bolts are installed between the connecting plates, energy-absorbing blocks, and connecting parts. A collapse groove is provided on the side of the beam body away from the side beam, and an installation groove is provided on the side of the beam body facing the side beam, through which an energy-absorbing strip is installed.

7. The collapsible protective beam structure for a new energy vehicle battery box according to claim 6, characterized in that: The mounting groove is a T-shaped groove, and the energy-absorbing strip is inserted into the T-shaped groove. The end of the energy-absorbing strip away from the T-shaped groove protrudes from the outside of the beam.

8. The collapsible protective beam structure for a new energy vehicle battery box according to claim 6, characterized in that: The collapse groove is a rectangular groove that extends along the length of the beam.

9. The collapsible protective beam structure for a new energy vehicle battery box according to claim 8, characterized in that: There are two or more of the collapse grooves on the upper and lower sides.

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