Battery box protection beam of impact-resistant multi-cavity structure

Abstract

The utility model discloses a kind of battery box protective beam of impact-resistant multi-cavity structure, including the side bracket pole of being installed in the both sides of battery box, and the protective pole between the both ends of side bracket pole is installed, the protective pole with the side bracket pole is movably installed, so that displacement energy absorption when being impacted, when installation, the installation spacing of more than 3cm is kept between protective pole and battery box;The end of the protective pole away from the side bracket pole is detachably installed with multi-cavity pole;The device can effectively absorb energy, buffer, and disperse and absorb impact energy by controllable deformation in collision.

Description

Technical Field

[0001] This utility model relates to a battery box protective beam with an impact-resistant multi-cavity structure. Background Technology

[0002] With the increasing popularity of new energy vehicles, the safety of battery packs in vehicle chassis has become a core concern in the industry. In the event of a collision, especially a frontal or side collision, the enormous impact energy, if directly transferred to the battery pack, can easily lead to battery module deformation, short circuits, or even serious accidents such as fires and explosions.

[0003] Currently, traditional battery box protection structures mostly use rigid connections, directly fixing the protective beams to the battery box body. While this structure possesses a certain degree of rigidity, it lacks an effective energy absorption and cushioning mechanism when subjected to impact. The impact force is directly transmitted to the battery box through the rigid structure, causing fatal damage to the battery cells.

[0004] Therefore, there is an urgent need in this field for a battery box protective beam with an impact-resistant multi-cavity structure that can effectively absorb energy, buffer, and disperse and absorb impact energy through controllable deformation during a collision. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a battery box protective beam with an impact-resistant multi-cavity structure that can effectively absorb energy, buffer, and disperse and absorb impact energy through controllable deformation during a collision.

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

[0007] A battery box protective beam with an impact-resistant multi-cavity structure includes side support rods installed on both sides of the battery box, and a protective rod installed between the two ends of the side support rods. The protective rod is movably installed with the side support rods so that the protective rod can displace and absorb energy when impacted. During installation, the protective rod maintains an installation distance of more than 3 cm from the battery box. The end of the protective rod away from the side support rod is detachably equipped with a multi-cavity rod.

[0008] Preferably, an energy-absorbing box is installed between the side support rod and the battery box.

[0009] Preferably, a sliding groove is provided near both ends on the side of the side support rod away from the battery box. The sliding groove is arranged laterally. The side support rod has two structural ribs, upper and lower, forming a cavity between the two structural ribs. An insert plate is provided on the side of the protective rod facing the side support rod. The insert plate is inserted into the cavity and slides along the cavity. The insert plate has a screw hole at the position corresponding to the sliding groove. A locking screw is screwed into the screw hole through the sliding groove. The end of the locking screw acts on the outer end face of the side support rod.

[0010] Preferably, the structural rib and the side support rod are an integral structure.

[0011] Preferably, protrusions are provided on the opposite surfaces of the two structural ribs, and a buffer block made of elastic rubber is provided in the cavity. One end of the buffer block is limited by the protrusions, and the other end acts on the insert plate.

[0012] Preferably, a through cavity groove is provided on the end face of the multi-cavity rod, and the cavity groove extends through the rod towards the protective rod.

[0013] Preferably, a damping pad is sandwiched between the multi-cavity rod and the protective rod, and the multi-cavity rod and the protective rod are connected by screws, with the screws passing through the damping pad.

[0014] Preferably, the surface of the damping pad is provided with protruding posts, which extend partially to the outside of the multi-cavity rod after passing through the cavity groove.

[0015] The beneficial effects of this utility model are:

[0016] This device innovatively adopts a "movable installation" protective bar design, changing the traditional rigid connection approach. In the event of a collision, the protective bar does not directly transfer the impact force to the battery box, but actively dissipates the impact energy through the following multi-stage energy absorption mechanism:

[0017] First-level unlocking and energy absorption: The insert plate of the protective bar first overcomes the preset torque of the locking screw to achieve initial displacement and avoid excessively high instantaneous peak impact force.

[0018] Secondary buffer energy absorption: During the displacement process, the insert plate squeezes the elastic rubber buffer block in the cavity, and the energy is further absorbed through the elastic deformation of the buffer block.

[0019] The damping pads placed between the multi-cavity rods and the protective rods, along with the protruding pillars extending from the cavity grooves, constitute a unique pre-buffering system. Upon collision, the protruding pillars make contact and deform first, consuming some energy. Only after they retract into the cavity grooves does the impact force fully act on the main structure, effectively reducing the severity of the initial impact. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is a perspective view of the device;

[0022] Figure 2 Here is a structural diagram of the guardrail;

[0023] Figure 3 This is a partial sectional view of the side support rod;

[0024] Figure 4 This is a magnified view of point A;

[0025] Figure 5 This is a schematic diagram showing the damping pad after installation. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] 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.

[0029] Furthermore, in the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] 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.

[0031] See Figure 1 , Figure 2 and Figure 3 The battery box protective beam with an impact-resistant multi-cavity structure shown includes side support rods 1 installed on both sides of the battery box, and protective rods 2 installed between the two ends of the side support rods 1. The protective rods 2 are movably installed with the side support rods 1 so that the protective rods 2 can displace and absorb energy when impacted. During installation, the protective rods 2 and the battery box maintain an installation distance of more than 3 cm to provide space for the displacement of the protective rods 2. The end of the protective rods 2 away from the side support rods 1 is detachably equipped with a multi-cavity rod 3.

[0032] In the above technical solution, the side support rod 1, the protective rod 2, and the multi-cavity rod 3 are all made of aluminum alloy, which is lighter and stronger.

[0033] In the above technical solution, the multi-cavity rod 3 serves as frontal collision protection, and the side support rod 1 serves as side collision protection for the battery box.

[0034] Compared to traditional technologies, the protective rod 2 in this technical solution is not directly fixed to the battery box. Therefore, after the protective rod 2 is subjected to impact, it absorbs energy by displacing along the side support rod 1, thus avoiding direct compression of the battery box shell.

[0035] See Figure 1 As shown, an energy-absorbing box 11 is installed between the side support rod 1 and the battery box.

[0036] The energy-absorbing box 11 is a conventional square energy-absorbing box. The reason for this is that, after studying existing battery fire accidents, we found that a larger proportion of fires are caused by frontal impact.

[0037] This device is primarily designed to protect battery boxes that protrude from the vehicle chassis.

[0038] One end of the energy-absorbing box 11 is welded and fixed to the side support rod 1, and the other end is connected to the battery box via a flange.

[0039] See Figures 1 to 4As shown, a sliding groove 12 is provided near both ends on the side of the side support rod 1 away from the battery box. The sliding groove 12 is arranged horizontally. The side support rod 1 has two structural ribs 13, one upper and one lower, forming a cavity 14 between the two structural ribs 13. The side of the protective rod 2 facing the side support rod 1 has an insert plate 21. The insert plate 21 is inserted into the cavity 14 and slides along the cavity 14. The insert plate 21 has a screw hole 22 at the position corresponding to the sliding groove 12. A locking screw 23 is screwed into the sliding groove 22. The locking screw 23 is screwed into the screw hole 22, and the end of the locking screw 23 acts on the outer end face of the side support rod 1.

[0040] In the above technical solution, the locking screw 23 is used to lock the protective rod 2. When the protective rod 2 is subjected to a positive impact, the insert plate 21 breaks through the fixation of the locking screw 23, so that the insert plate 21 can slide along the cavity 14 to absorb energy.

[0041] Choose a locking screw with the appropriate locking torque according to actual needs.

[0042] The structural ribs and the side support rods are an integral structure.

[0043] See Figure 2 and Figure 4 As shown, protrusions 131 are provided on the opposite surfaces of the two structural ribs 13, and a buffer block 141 made of elastic rubber is provided in the cavity 14. One end of the buffer block 141 is limited by the protrusions 131, and the other end acts on the insert plate 21.

[0044] In the above technical solution, when the protective rod 2 is impacted, it drives the insert plate 21 to move inward along the cavity 14. When moving, it first overcomes the fixing torque of the locking screw 23, and then squeezes and deforms the buffer block 141. The buffer block 141 is made of elastic rubber material and absorbs energy through elastic deformation.

[0045] See Figure 1 As shown, a through cavity groove 311 is provided on the end face of the multi-cavity rod 3, and the cavity groove 311 extends through the direction of the protective rod 2.

[0046] The cavity groove 311 is designed to reduce the amount of material used in the multi-cavity rod 3, thereby reducing cost and weight.

[0047] See Figure 1 , Figure 2 and Figure 5 As shown, a damping pad 4 is sandwiched between the multi-cavity rod 3 and the protective rod 2, and the multi-cavity rod 3 and the protective rod 2 are connected by screws, with the screws passing through the damping pad 4.

[0048] Damping pad 4 is made of elastic rubber, which can play a certain role in absorbing energy.

[0049] See Figure 5 As shown, the surface of the damping pad 4 is provided with a protruding post 41, which extends partially to the outside of the multi-cavity rod 3 after passing through the cavity groove 311.

[0050] In the above technical solution, an outwardly protruding post 41 is used. When a collision occurs, the post 41 first bears the impact. When the post 41 elastically deforms and retracts into the cavity groove 311, the impact force will then act on the multi-cavity rod 3.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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 battery box protective beam with an impact-resistant multi-cavity structure, characterized in that: It includes side support rods installed on both sides of the battery box, and a protective rod installed between the two ends of the side support rods. The protective rod is movably installed with the side support rods so that the protective rod can displace and absorb energy when it is impacted. During installation, the protective rod and the battery box maintain an installation distance of more than 3 cm. The end of the protective rod away from the side support rod is detachably installed with a multi-cavity rod.

2. The impact-resistant multi-cavity battery box protective beam according to claim 1, characterized in that: An energy-absorbing box is installed between the side support rod and the battery box.

3. The impact-resistant multi-cavity structure battery box protective beam according to claim 2, characterized in that: A sliding groove is provided near both ends on the side of the side support rod away from the battery box. The sliding groove is arranged horizontally. The side support rod has two structural ribs, upper and lower, forming a cavity between the two structural ribs. An insert plate is provided on the side of the protective rod facing the side support rod. The insert plate is inserted into the cavity and slides along the cavity. The insert plate has a screw hole at the position corresponding to the sliding groove. A locking screw is screwed into the screw hole through the sliding groove. The end of the locking screw acts on the outer end face of the side support rod.

4. The impact-resistant multi-cavity structure battery box protective beam according to claim 3, characterized in that: The structural ribs and the side support rods are an integral structure.

5. The impact-resistant multi-cavity structure battery box protective beam according to claim 3, characterized in that: A protrusion is provided on the opposite surface of the two structural ribs, and a buffer block made of elastic rubber is provided in the cavity. One end of the buffer block is limited by the protrusion, and the other end acts on the insert plate.

6. The impact-resistant multi-cavity structure battery box protective beam according to claim 1, characterized in that: The end face of the multi-cavity rod is provided with a through cavity groove, which extends toward the protective rod.

7. The impact-resistant multi-cavity structure battery box protective beam according to claim 6, characterized in that: A damping pad is sandwiched between the multi-cavity rod and the protective rod, and the multi-cavity rod and the protective rod are connected by screws, with the screws passing through the damping pad.

8. The impact-resistant multi-cavity structure battery box protective beam according to claim 7, characterized in that: The surface of the damping pad is provided with protruding posts, which extend partially to the outside of the multi-cavity rod after passing through the cavity groove.

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