Anti-collision structure and battery pack

Abstract

The application relates to an anti-collision structure and a battery pack, and relates to the technical field of automobile safety. The anti-collision structure comprises an anti-collision piece, a partition piece, a first buffer piece and a second buffer piece. The partition piece divides the cavity into a first chamber and a second chamber, and the side of the first chamber opposite to the second chamber has an arc-shaped structure. The first buffer piece is arranged in the first chamber and is connected between the arc-shaped structure and the partition piece. The second buffer piece is arranged in the second chamber and is connected between the partition piece and the end of the anti-collision piece opposite to the arc-shaped structure. In this way, the anti-collision structure can absorb and disperse the collision energy in stages. The first buffer piece first absorbs part of the energy, thereby reducing the initial impact force, and the second buffer piece continues to absorb the remaining energy after the deformation of the partition piece. The multi-stage energy absorption mechanism effectively reduces the impact force transmitted to the vehicle body.

Description

Technical Field

[0001] This application relates to the field of automotive safety technology, and in particular to a collision avoidance structure and a battery pack. Background Technology

[0002] With the widespread application of electric vehicles and energy storage systems, battery pack safety is receiving increasing attention. During vehicle operation or storage, battery packs may be subjected to external collisions, which can not only damage the battery pack but also potentially lead to serious consequences such as fires or explosions. Existing battery pack anti-collision structures mostly use simple cushioning materials, which are insufficient to effectively disperse and absorb collision energy, thus failing to adequately protect the battery modules inside the pack. Therefore, it is necessary to design a novel battery pack anti-collision structure to improve battery pack safety during collisions. Utility Model Content

[0003] This application provides an anti-collision structure for a battery pack and a battery pack including the structure, in order to solve the problem of poor anti-collision performance of battery packs in the prior art, and to at least partially solve the above-mentioned technical problems.

[0004] To achieve the above objectives, according to a first aspect of this application, a collision protection structure for a battery pack is provided, comprising:

[0005] The anti-collision component has a cavity;

[0006] A partition is disposed in the cavity, which divides the cavity into a first chamber and a second chamber. The side of the first chamber facing away from the second chamber has an arc-shaped structure.

[0007] The first buffer is disposed in the first chamber and is connected between the arc-shaped structure and the partition.

[0008] The second buffer is located in the second chamber and is connected to the end of the partition and the anti-collision member that is opposite to the arc-shaped structure.

[0009] In some embodiments, the anti-collision component includes an arc-shaped plate, a mounting plate, and two side plates. The arc-shaped plate includes an arc-shaped structure. A partition is connected between the two ends of the arc-shaped plate and cooperates to form a first chamber. One end of each side plate is connected to the end of the mounting plate, and the other end is connected to the end of the partition. The four components cooperate to form a second chamber.

[0010] In some embodiments, the outer surface of the curved plate is provided with a protective layer, which is a biomimetic shark skin texture layer or a polyvinyl chloride coating.

[0011] In some embodiments, a pressure sensor is provided on the curved plate for real-time monitoring of the force acting on the curved plate.

[0012] In some embodiments, the impact protection structure of the battery pack further includes:

[0013] Two support members are installed in the second chamber. One end of each support member is connected to the middle of the partition member, and the other end is connected to the connection between the mounting plate and the side plate.

[0014] In some embodiments, the density of the first buffer increases from the direction opposite to the arcuate structure.

[0015] In some embodiments, the first buffer includes a plurality of elastic portions disposed in the first cavity, one end of each elastic portion being connected to a baffle and the other end being connected to an arc-shaped structure.

[0016] In some embodiments, the first buffer includes a buffer portion and a plurality of elastic portions disposed in the first chamber. The buffer portion is connected to the arc-shaped structure, and one end of each elastic portion is connected to a baffle and the other end is connected to the buffer portion.

[0017] In some embodiments, the anti-collision member has a mounting opening and a mounting hole, the mounting opening being used to expose the partition member, the mounting hole penetrating the partition member and the mounting plate, and the mounting hole communicating with the mounting opening.

[0018] According to a second aspect of this application, a battery pack is provided, comprising: a housing; a battery module disposed within the housing; and an anti-collision structure of the battery pack as described above, disposed on the outer periphery of the housing.

[0019] The technical advantage of this application lies in providing a collision protection structure and battery pack. By dividing the cavity of the collision protection component into two chambers and installing a buffer in each chamber, the collision protection structure can absorb and disperse collision energy in stages. The first buffer absorbs part of the energy first, reducing the initial impact force, while the second buffer continues to absorb the remaining energy after the barrier deforms. This multi-stage energy absorption mechanism effectively reduces the impact force transmitted to the vehicle body.

[0020] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0023] Figure 1This is a schematic diagram of the overall structure of the anti-collision structure provided in one embodiment of this application;

[0024] Figure 2 This is a side view of the anti-collision structure provided in one embodiment of the present application along its length. Figure 1 ;

[0025] Figure 3 This is a side view of the anti-collision structure provided in one embodiment of the present application along its length. Figure 2 ;

[0026] Figure 4 This is a side view of the anti-collision structure provided in one embodiment of the present application along its length. Figure 3 ;

[0027] Figure 5 This is a side view of the anti-collision structure provided in one embodiment of the present application along its length. Figure 4 ;

[0028] Figure 6 This is a side view of the anti-collision structure provided in one embodiment of the present application along its length. Figure 5 ;

[0029] Figure 7 This is a schematic diagram of an embodiment of the anti-collision structure provided in this application applied to the casing of a battery pack.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1-Anti-collision component; 11-Arc-shaped plate; 12-Mounting plate; 13-Side plate; 111-Protective layer; 112-Pressure sensor; 2-Blocking component; 3-First buffer component; 31-Buffer section; 32-Elastic section; 4-Second buffer component; 5-Support component; 10-Cavity; 101-First chamber; 102-Second chamber; 1021-Sub-chamber; 20-Arc-shaped structure; 30-Mounting port; 40-Mounting hole; 100-Box body; 200-Battery module; 300-Anti-collision structure; 110-Base plate; 120-Enclosure plate. Detailed Implementation

[0032] 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 a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0033] Please see Figures 1-2 This application provides a battery pack anti-collision structure 300, including an anti-collision member 1, a partition member 2, a first buffer member 3, and a second buffer member 4.

[0034] The anti-collision member 1 has a cavity 10. A partition 2 is disposed within the cavity 10, dividing it into a first chamber 101 and a second chamber 102. The side of the first chamber 101 facing away from the second chamber 102 has an arc-shaped structure 20. A first buffer 3 is disposed within the first chamber 101, connecting the arc-shaped structure 20 and the partition 2. A second buffer 4 is disposed within the second chamber 102, connecting the partition 2 and the end of the anti-collision member 1 facing away from the arc-shaped structure 20.

[0035] Understandably, by dividing the cavity 10 of the anti-collision component 1 into two chambers and installing buffers in each chamber, the anti-collision structure 300 of the battery pack can absorb and disperse collision energy in stages. The first buffer 3 first absorbs part of the energy, reducing the initial impact force, while the second buffer 4 continues to absorb the remaining energy after the partition 2 deforms. This multi-stage energy absorption mechanism effectively reduces the impact force transmitted to the vehicle body.

[0036] For example, in the event of a traffic accident, the impacting object first collides with the arc-shaped structure 20 of the anti-collision member 1, and then is transmitted through the arc-shaped structure 20 to the first buffer member 3 in the first chamber 101. The impact force is reduced by the buffer of the first buffer member 3. The first buffer member 3 transmits the force to the partition member 2. If the impact force is greater than the support strength of the partition member 2, the partition member 2 will deform and continue to be squeezed into the second chamber 102. At this time, the second buffer member 4 provided in the second chamber 102 will buffer again, so that the impact force will be unloaded again, further improving the anti-collision characteristics of the battery pack anti-collision structure 300.

[0037] In some embodiments, please refer to Figures 1-2 The anti-collision component 1 includes an arc-shaped plate 11, a mounting plate 12, and two side plates 13. The arc-shaped plate 11 includes an arc-shaped structure 20. The partition 2 is connected between the two ends of the arc-shaped plate 11 and forms a first chamber 101. One end of each side plate 13 is connected to the end of the mounting plate 12, and the other end is connected to the end of the partition 2. The four components together form a second chamber 102.

[0038] Understandably, the arc-shaped plate 11, as the outer surface of the anti-collision component 1, has a semi-circular arc structure 20, which allows the collision force to be dispersed along the arc surface, reducing local stress concentration. The presence of the baffle 2 further disperses the energy into the first chamber 101 and the second chamber 102, achieving the effect of gradually absorbing energy through the first buffer 3 and the second buffer 4.

[0039] Therefore, by connecting the baffle 2 between the two ends of the arc plate 11 and cooperating with the side plate 13 and the mounting plate 12 to form two chambers, the anti-collision component 1 can provide a multi-layered buffering effect during a collision, which helps to maintain efficient energy absorption capacity in collisions of different directions and intensities.

[0040] In some embodiments, please refer to Figure 1 The outer surface of the curved plate 11 is provided with a protective layer 111, which is a biomimetic shark skin texture layer or a polyvinyl chloride coating (PVC) to reduce the peak friction force of the anti-collision component 1 at the moment of impact. Among them, the biomimetic shark skin texture layer is a material or coating designed by imitating the microstructure of the surface of shark skin.

[0041] In some embodiments, please refer to Figure 1 A pressure sensor 112 is provided on the curved plate 11 to monitor the force acting on the curved plate 11 in real time. It can be understood that the pressure sensor 112 is located on the inner or outer wall of the curved plate 11. Figure 1 The diagram illustrates that pressure sensor 112 is mounted on the inner wall of the curved plate 11. When pressure sensor 112 detects deformation of the curved plate 11 in real time, it sends a signal to the vehicle system to trigger battery disconnection. This rapid disconnection of battery power in the event of a collision or other emergency can prevent electrical system short circuits or fires, reducing the risk of fire.

[0042] In some embodiments, please refer to Figures 1-2 The battery pack's anti-collision structure 300 also includes two support members 5, which are disposed in the second chamber 102. One end of each support member 5 is connected to the middle of the partition member 2, and the other end is connected to the connection between the mounting plate 12 and the side plate 13.

[0043] Understandably, the support member 5 provides additional support and stability, helps maintain the shape and position of the barrier member 2 during a collision, and helps prevent the barrier member 2 from deforming excessively when subjected to impact, thereby maintaining the integrity of the anti-collision structure 300.

[0044] In some embodiments, please refer to Figure 3 The battery pack anti-collision structure 300 also includes: two or more support members 5, multiple support members 5 are disposed in the second chamber 102, each support member 5 is connected to the partition member 2, and the other end is connected to the mounting plate 12 to divide the second chamber 102 into multiple sub-chambers 1021, and the second buffer member 4 is disposed in the sub-chamber 1021.

[0045] Understandably, the second chamber 102 is divided into multiple sub-chambers 1021 by multiple support members 5, and the second buffer member 4 in each sub-chamber 1021 can work independently, so as to absorb and disperse energy more efficiently during a collision, because each sub-chamber 1021 can be optimized for different impact forces.

[0046] For example, in the event of a traffic accident, the impacting object first collides with the arc-shaped structure 20 of the anti-collision member 1, and then is transmitted through the arc-shaped structure 20 to the first buffer member 3 in the first chamber 101. The impact force is reduced by the buffer of the first buffer member 3. The first buffer member 3 transmits the force to the partition member 2. If the impact force is greater than the support strength of the partition member 2, the partition member 2 will deform and continue to be squeezed into the second chamber 102. At this time, the second buffer member 4 set in the second chamber 102 buffers again to reduce the impact force. The support member 5 helps to maintain the shape and position of the partition member 2 during the collision, further improving the anti-collision characteristics of the anti-collision structure 300.

[0047] In some embodiments, please refer to Figure 2 and Figure 3 The density of the first buffer 3 increases from the direction opposite to the arc-shaped structure 20.

[0048] Understandably, the first buffer 3 employs a density-increasing design, enabling it to gradually absorb energy during a collision. The lower-density portion absorbs the initial impact force first, while the higher-density portion provides stronger energy absorption capacity as the impact force increases. This gradual absorption helps reduce the instantaneous impact force transmitted to the vehicle body.

[0049] In some embodiments, please refer to Figure 4 The first buffer member 3 has multiple buffer portions 31 arranged within the first chamber 101 along the convex direction of the arc-shaped structure 20. This allows the impact force to be distributed more evenly across the entire first buffer member 3, helping to reduce local stress concentration and improve the durability of the structure. Furthermore, the density of each buffer portion 31 can be the same or different. For example, the density of the multiple buffer portions 31 can increase from the direction opposite to the arc-shaped structure 20, allowing the first buffer member 3 to gradually absorb energy during a collision.

[0050] In some embodiments, please refer to Figure 5 The first buffer 3 includes a plurality of elastic portions 32 disposed within the first chamber 101. One end of each elastic portion 32 is connected to the baffle 2, and the other end is connected to the arc-shaped structure 20. Therefore, during a collision, energy is absorbed and dispersed through elastic deformation. The elastic portion 32 can reduce the impact force and continuously rebound part of the force when subjected to impact, thereby reducing the force transmitted to the vehicle body.

[0051] In some embodiments, please refer to Figure 6 The first buffer 3 includes a buffer part 31 and a plurality of elastic parts 32 disposed in the first chamber 101. The buffer part 31 is connected to the arc structure 20 (i.e. the arc plate 11). One end of each elastic part 32 is connected to the partition 2, and the other end is connected to the buffer part 31.

[0052] Understandably, by combining the buffer part 31 and the elastic part 32, the design can better adapt to collisions of different directions and intensities, and allows the quantity, material, and arrangement of the buffer part 31 and the elastic part 32 to be adjusted according to different vehicle models and needs to optimize collision protection performance.

[0053] In some embodiments, please refer to Figure 1 The anti-collision component 1 is provided with an installation opening 30 and an installation hole 40. The installation opening 30 is used to expose the partition component 2, and the installation hole 40 penetrates the partition component 2 and the mounting plate 12, and the installation hole 40 is connected to the installation opening 30, making the installation and disassembly process more convenient. Installers can directly access the partition component 2, reducing the complexity and time of installation.

[0054] Please see Figure 7 This application also provides a battery pack, including a housing 100, a battery module 200, and an anti-collision structure 300.

[0055] The housing 100 includes a base plate 110 and multiple surrounding plates 120. The surrounding plates 120 are connected to the base plate 110 and cooperate to form a cavity for accommodating the battery module 200. The battery module 200 includes multiple battery cells, which are arranged sequentially along the length of the housing 100. An anti-collision structure 300 is disposed on the outer periphery of the housing 100, that is, on the side of the surrounding plates 120 away from the battery module 200. This allows for preferential absorption and dispersion of impact forces during a collision, reducing the direct impact on the battery module 200, helping to protect the battery module 200 from damage, and reducing the risk of battery failure or leakage.

[0056] In some embodiments, the enclosure 120 has a plurality of fixing holes (not shown), so that fasteners (such as bolts) can pass through the mounting opening 30 and mounting hole 40 of the anti-collision member 1 and the fixing holes of the enclosure 120 to achieve mutual fixation between the anti-collision structure 300 and the enclosure 120 of the box 100.

[0057] 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0058] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0059] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0060] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A collision protection structure for a battery pack, characterized in that, include: The anti-collision component has a cavity; A partition is disposed within the cavity, the partition dividing the cavity into a first chamber and a second chamber, the side of the first chamber facing away from the second chamber having an arc-shaped structure; A first buffer is disposed within the first cavity, and the first buffer is connected between the arc-shaped structure and the partition. The second buffer is disposed in the second cavity and is connected to the end of the partition and the anti-collision member opposite to the arc-shaped structure.

2. The anti-collision structure of the battery pack according to claim 1, characterized in that, The anti-collision component includes an arc-shaped plate, a mounting plate, and two side plates. The arc-shaped plate includes the arc-shaped structure. The partition is connected between the two ends of the arc-shaped plate and cooperates to form the first chamber. One end of each side plate is connected to the end of the mounting plate, and the other end is connected to the end of the partition. The four components cooperate to form the second chamber.

3. The anti-collision structure of the battery pack according to claim 2, characterized in that, The outer surface of the arc-shaped plate is provided with a protective layer, which is a biomimetic shark skin texture layer or a polyvinyl chloride coating.

4. The anti-collision structure of the battery pack according to claim 2, characterized in that, A pressure sensor is provided on the arc-shaped plate to monitor the force acting on the arc-shaped plate in real time.

5. The anti-collision structure of the battery pack according to claim 2, characterized in that, Also includes: Two support members are disposed in the second cavity, with one end of each support member connected to the middle of the partition member and the other end connected to the connection between the mounting plate and the side plate.

6. The anti-collision structure of the battery pack according to any one of claims 1-4, characterized in that, The density of the first buffer increases from the direction opposite to the arc-shaped structure.

7. The anti-collision structure of the battery pack according to any one of claims 1-4, characterized in that, The first buffer includes a plurality of elastic portions disposed in the first cavity, one end of each elastic portion being connected to the partition and the other end being connected to the arc-shaped structure.

8. The anti-collision structure of the battery pack according to claim 7, characterized in that, The first buffer includes a buffer portion and a plurality of elastic portions disposed in the first cavity. The buffer portion is connected to the arc-shaped structure, and one end of each elastic portion is connected to the partition and the other end is connected to the buffer portion.

9. The anti-collision structure of the battery pack according to claim 2, characterized in that, The anti-collision component is provided with an installation opening and an installation hole. The installation opening is used to expose the partition, and the installation hole penetrates the partition and the mounting plate, and the installation hole communicates with the installation opening.

10. A battery pack, characterized in that, include: Box; The battery module is housed within the casing. as well as The anti-collision structure of the battery pack according to any one of claims 1-9 is disposed on the outer periphery of the housing.

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