Anti-collision energy absorption device, battery pack and vehicle

Abstract

The invention relates to the technical field of vehicle anti-collision design, in particular to an anti-collision energy-absorbing device, a battery pack and a vehicle, and the anti-collision energy-absorbing device structurally comprises a first baffle plate part which is provided with a first plate surface; a second plate surface is formed on the second baffle part, a gap is formed between the second baffle part and the first baffle part, and the second plate surface is parallel to the first plate surface; the elastic part is arranged between the first baffle plate part and the second baffle plate part, and under the condition that the first baffle plate part and the second baffle plate part are close to each other, the elastic part can generate force enabling the first baffle plate part and the second baffle plate part to be far away from each other. The anti-collision energy absorption device, the battery pack and the vehicle can solve the problem that when foreign matter collides with the front side of a battery shell, a battery is prone to damage or fire breaks out.

Description

Technical Field

[0001] This application relates to the field of vehicle collision avoidance design technology, and in particular to a collision avoidance energy absorption device, a battery pack, and a vehicle. Background Technology

[0002] New energy vehicles have entered a critical period of large-scale application. As a crucial component of new energy vehicles, the power battery plays a vital role in the automotive system, providing power to the entire vehicle, especially in pure electric vehicles where it is the sole energy source. The automotive power battery is not merely a key component providing power; it also involves multiple aspects such as the overall vehicle design, performance optimization, and user experience. Therefore, ensuring the reliable and stable operation of the power battery is of paramount importance for its safety protection.

[0003] A typical power battery consists of several main components, including cell packs, a battery management unit, high and low voltage wiring harnesses, a thermal management system, interfaces, pressure relief valves, the battery casing, and a cover. The battery casing itself is a protective device, serving multiple functions such as protecting the cells, securing high and low voltage electrical components, ensuring sealing, and connecting to the vehicle. Most electric vehicles place the power battery pack under the vehicle body; however, the bottom surface of the power battery is large and not protected by the vehicle body structure, making it susceptible to scratches and impacts from below. Therefore, a bottom guard plate is usually installed on the bottom of the battery for protection. However, the front of the battery pack is usually only protected by the battery pack housing. When the car is traveling at a certain speed, if a foreign object impacts the front of the battery casing, such as a popped-out manhole cover or paving stone, or a protruding road shoulder, it may cause battery damage or fire. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide an anti-collision energy absorption device, a battery pack and a vehicle to solve the problem that when a foreign object hits the front of the battery casing, it can easily lead to battery damage or fire.

[0005] According to a first aspect of the present invention, a collision avoidance and energy absorption device is provided, wherein the collision avoidance and energy absorption device includes: a first baffle portion having a first plate surface; a second baffle portion having a second plate surface, wherein a gap is provided between the second baffle portion and the first baffle portion, and the second plate surface is parallel to the first plate surface; and an elastic portion disposed between the first baffle portion and the second baffle portion, wherein when the first baffle portion and the second baffle portion are close to each other, the elastic portion is capable of generating a force that causes the first baffle portion and the second baffle portion to move away from each other.

[0006] Preferably, the first baffle portion and the second baffle portion are formed in the shape of strips.

[0007] Preferably, the elastic portion includes: a first elastic member disposed between a first end of the first baffle portion in the length direction and a first end of the second baffle portion in the length direction; and a second elastic member disposed between a second end of the first baffle portion in the length direction and a second end of the second baffle portion in the length direction.

[0008] Preferably, the first elastic member has snap-fit ​​protrusions at both ends in the compression direction and an arc-shaped portion in the middle of the compression direction; the second elastic member has snap-fit ​​protrusions at both ends in the compression direction and an arc-shaped portion in the middle of the compression direction.

[0009] Preferably, the first baffle portion and the second baffle portion have locking grooves formed at both ends in the length direction. The openings of the two locking grooves on the first baffle portion are arranged opposite to each other, and the openings of the two locking grooves on the second baffle portion are arranged opposite to each other. The two locking protrusions on the first elastic member are respectively locked in the locking grooves of the first baffle portion and the second baffle portion, and the two locking protrusions on the second elastic member are respectively locked in the locking grooves of the first baffle portion and the second baffle portion.

[0010] Preferably, the first baffle portion includes: a first main board portion, the first plate surface being the side of the first main board portion away from the second baffle portion; and a first side plate portion, disposed on both sides in the width direction of the first main board portion, the first side plate portion extending toward the second baffle portion.

[0011] Preferably, the second baffle portion includes: a second main plate portion, the second plate surface being the side of the second main plate portion away from the first baffle portion; and a second side plate portion disposed on both sides in the width direction of the second main plate portion, the second side plate portion extending toward the first side plate portion, the second side plate portion being aligned with the first side plate portion, and a gap being formed between the second side plate portion and the first side plate portion when the elastic portion is not compressed.

[0012] Preferably, the first motherboard portion and / or the second motherboard portion are provided with a plurality of mounting holes, and the plurality of mounting holes are spaced apart along the length direction of the first motherboard portion and / or the second motherboard portion.

[0013] According to a second aspect of the present invention, a battery pack is provided, wherein the battery pack includes a housing and an impact-absorbing energy-absorbing device as described above, the impact-absorbing energy-absorbing device being disposed at the front end of the housing.

[0014] According to a second aspect of the present invention, a vehicle is provided, wherein the vehicle includes a battery pack, a vehicle chassis, and a collision-absorbing energy-absorbing device as described above, the battery pack being mounted on the vehicle chassis, the collision-absorbing energy-absorbing device being mounted on the vehicle chassis, and the collision-absorbing energy-absorbing device being disposed at the front of the battery pack.

[0015] The collision-absorbing energy-absorbing device, battery pack, and vehicle of this invention have a gap between the second baffle portion and the first baffle portion, and an elastic portion is provided at the gap. This allows the elastic portion to generate a force that pulls the first baffle portion away from the second baffle portion when they are close together. Thus, when the front of the battery pack is subjected to an impact, the collision-absorbing energy-absorbing device can deform significantly to absorb energy, thereby effectively reducing damage to the battery pack.

[0016] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the anti-collision energy absorption device according to the present invention.

[0019] Figure 2 This is a cross-sectional view of the anti-collision energy absorption device according to the present invention.

[0020] Figure 3 This is a schematic diagram of the anti-collision energy absorption device under compressed state according to the present invention.

[0021] Figure 4 This is a cross-sectional view of the anti-collision energy absorption device under compression according to the present invention.

[0022] Figure 5 This is a schematic diagram of the anti-collision energy absorption device, battery pack, and vehicle chassis according to the present invention.

[0023] Reference numerals: 1-First baffle portion; 10-First plate surface; 11-First main plate portion; 12-First side plate portion; 2-Second baffle portion; 20-Second plate surface; 21-Second main plate portion; 22-Second side plate portion; 3-Elastic portion; 30-Snap-fit ​​groove; 31-First elastic element; 32-Second elastic element; 301-Snap-fit ​​protrusion; 302-Arc-shaped portion; 4-Mounting hole; 5-Battery pack; 6-Weight reduction hole. Detailed Implementation

[0024] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0025] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0026] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0027] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0028] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0029] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0030] The terminology used herein is for the purpose of describing various examples only and is not intended to limit the examples. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0031] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0032] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0033] like Figures 1 to 5 As shown, according to a first aspect of the present invention, an anti-collision energy absorption device is provided, which includes a first baffle portion 1, a second baffle portion 2, and an elastic portion 3.

[0034] In the following description, reference will be made to Figures 1 to 5 The specific structure of the aforementioned components of the anti-collision energy absorption device and the connection relationship of the aforementioned components are described in detail.

[0035] like Figures 1 to 5 As shown, in this embodiment, the first baffle portion 1 may have a first plate surface 10, which can be used to mount on the surface of other components of the vehicle. The second baffle portion 2 may have a second plate surface 20, which can be used to withstand impact (not limited to this, the first plate surface 10 can also be used to withstand impact, and the second plate surface 20 can be used to mount on other components). A gap may be provided between the second baffle portion 2 and the first baffle portion 1, and the second plate surface 20 may be arranged parallel to the first plate surface 10. An elastic portion 3 may be provided between the first baffle portion 1 and the second baffle portion 2. When the first baffle portion 1 and the second baffle portion 2 are close to each other, the elastic portion 3 is compressed, so that the elastic portion 3 can generate a force that moves the first baffle portion 1 and the second baffle portion 2 away from each other. The anti-collision energy absorption device may be installed on the front side of the battery pack 5 (with the direction closer to the front of the vehicle as the front). When the front side of the battery pack 5 is to be impacted, the anti-collision energy absorption device can deform significantly to absorb energy, thereby effectively reducing the damage to the battery pack 5.

[0036] Preferred, such as Figures 1 to 4 As shown, in this embodiment, the first baffle portion 1 and the second baffle portion 2 can be formed in a strip shape. Further, preferably, the elastic portion 3 can include a first elastic element 31 and a second elastic element 32. The first elastic element 31 can be disposed at a first end in the length direction of the first baffle portion 1 (it can be, for example,...). Figure 1 The left end shown) and the first end (which can be, for example, the second baffle portion 2) in the length direction of the second baffle portion 2. Figure 1 The second elastic member 32 can be disposed at the second end (as shown on the left end) in the length direction of the first baffle portion 1. Figure 1 The right end shown) and the second end (which can be, for example, the second end in the length direction of the second baffle portion 2) in the direction of length. Figure 1 Between the right end shown.

[0037] Preferred, such as Figure 2 and Figure 4 As shown, in the embodiment, the first elastic member 31 is in the compression direction (i.e., as shown in the figure). Figure 2 The first elastic member 31 has locking protrusions 301 at both ends (vertically as shown), which protrude beyond the ends of the first elastic member 31. The first elastic member 31 also has an arc-shaped portion 302 formed in the middle of its compression direction, and this arc-shaped portion 302 can protrude away from the second elastic member 32. Similarly, the second elastic member 32 has an arc-shaped portion 302 in its compression direction (i.e., as shown vertically as shown). Figure 2The vertical section shown has locking protrusions 301 at both ends, which protrude from the ends of the second elastic member 32. The second elastic member 32 also has an arc-shaped portion 302 in the middle of its compression direction, which can protrude away from the first elastic member 31.

[0038] Furthermore, preferably, such as Figures 1 to 4 As shown, in this embodiment, the first baffle portion 1 and the second baffle portion 2 have locking grooves 30 formed at both ends in the length direction. Specifically, the first baffle portion 1 and the second baffle portion 2 may have bent end plates at their ends in the length direction, and the locking grooves 30 are formed on the inner side of the end plates, that is, the end plates form locking grooves 30 after bending. The openings of the two locking grooves 30 on the first baffle portion 1 may be arranged opposite each other, and the openings of the two locking grooves 30 on the second baffle portion 2 may be arranged opposite each other to prevent the first elastic member 31 and the second elastic member 32 from disengaging from both ends of the anti-collision energy absorption device. The two snap-fit ​​protrusions 301 on the first elastic member 31 can be snapped into the snap-fit ​​grooves 30 of the first baffle portion 1 and the second baffle portion 2 respectively, and the two snap-fit ​​protrusions 301 on the second elastic member 32 can be snapped into the snap-fit ​​grooves 30 of the first baffle portion 1 and the second baffle portion 2 respectively, thereby connecting the first baffle portion 1 and the second baffle portion 2 through the first elastic member 31 and the second elastic member 32.

[0039] In addition, preferred, such as Figures 1 to 4 As shown, in this embodiment, the first baffle portion 1 may include a first main board portion 11 and two first side plate portions 12. The first main board portion 11 may be integrally formed with the two first side plate portions 12. The first plate surface 10 may be the side of the first main board portion 11 away from the second baffle portion 2. The two first side plate portions 12 may be respectively disposed on both sides of the first main board portion 11 in the width direction, and the first side plate portions 12 extend towards the second baffle portion 2.

[0040] Furthermore, preferably, such as Figures 1 to 4As shown, in this embodiment, the second baffle portion 2 may include a second main plate portion 21 and two second side plate portions 22. The second main plate portion 21 may be integrally formed with the two second side plate portions 22. The second plate surface 20 may be the side of the second main plate portion 21 away from the first baffle portion 1. The two second side plate portions 22 may be respectively disposed on both sides of the second main plate portion 21 in the width direction, and the second side plate portions 22 may extend towards the first baffle portion 1. Furthermore, the second side plate portions 22 may be aligned with the first side plate portions 12. When the elastic portion 3 is not compressed, a gap is formed between the second side plate portions 22 and the first side plate portions 12; when the elastic portion 3 is compressed, the second side plate portions 22 may abut against the first side plate portions 12, thereby preventing the elastic portion 3 from being over-compressed.

[0041] Further optimized, preferred, such as Figures 1 to 5 As shown, in this embodiment, the first baffle portion 1 and the second baffle portion 2 can be formed by die stamping. The first baffle portion 1 and the second baffle portion 2 can be made of FC420 / 780DPD+Z material and are protected against corrosion by electrophoretic painting. Multiple mounting holes 4 can be provided on the first main board portion 11 and / or the second main board portion 21 (i.e., at least one of the first main board portion 11 and the second main board portion 21 has mounting holes 4), allowing the anti-collision energy absorption device to be bolted to other parts of the vehicle. The multiple mounting holes 4 can be spaced apart along the length of the first main board portion 11 and / or the second main board portion 21 to ensure that the anti-collision energy absorption device can be stably installed on the vehicle. In addition, multiple weight-reducing holes 6 can also be provided on the first main board portion 11 and the second main board portion 21 to reduce the weight of the anti-collision energy absorption device.

[0042] Furthermore, according to a second aspect of the present invention, a battery pack 5 is provided, the battery pack 5 including a housing and an anti-collision energy-absorbing device as described above, the anti-collision energy-absorbing device being disposed at the front end of the housing. Specifically, one of the first baffle portion 1 and the second baffle portion 2 of the anti-collision energy-absorbing device is bolted to the front side of the housing of the battery pack 5 and locked in place by a nut, so that the anti-collision energy-absorbing device is impacted before the battery pack 5 is subjected to an impact, thereby protecting the battery pack 5. Multiple anti-collision energy-absorbing devices may be installed on the front side of the housing of the battery pack 5 to further reduce the damage to the battery pack 5.

[0043] Furthermore, according to a third aspect of the present invention, a vehicle is provided, the vehicle comprising a battery pack 5 and a vehicle chassis with a collision-absorbing energy-absorbing device as described above. The battery pack 5 can be mounted on the vehicle chassis. The collision-absorbing energy-absorbing device can also be mounted on the vehicle chassis.

[0044] Specifically, the battery pack can be installed on the bottom surface of the vehicle chassis, and the anti-collision energy absorption device can be located at the front of the battery pack 5, so that the anti-collision energy absorption device can withstand the impact before the battery pack 5. Multiple anti-collision energy absorption devices can be installed on the vehicle chassis, and these devices can be spaced apart at the front of the battery pack 5 to further reduce the damage to the battery pack 5.

[0045] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The scope of protection of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A collision-resistant energy-absorbing device, characterized in that, The anti-collision energy absorption device includes: The first baffle portion has a first plate surface; A second baffle portion is formed with a second plate surface, a gap is provided between the second baffle portion and the first baffle portion, and the second plate surface is parallel to the first plate surface; and An elastic portion is disposed between the first baffle portion and the second baffle portion. When the first baffle portion and the second baffle portion are close to each other, the elastic portion can generate a force that causes the first baffle portion and the second baffle portion to move away from each other.

2. The anti-collision energy absorption device according to claim 1, characterized in that, The first baffle portion and the second baffle portion are formed in the shape of strips.

3. The anti-collision energy absorption device according to claim 2, characterized in that, The elastic portion includes: A first elastic element is disposed between a first end in the length direction of the first baffle portion and a first end in the length direction of the second baffle portion; and The second elastic element is disposed between the second end of the first baffle portion in the length direction and the second end of the second baffle portion in the length direction.

4. The anti-collision energy absorption device according to claim 3, characterized in that, The first elastic member has snap-fit ​​protrusions at both ends in the compression direction, and an arc-shaped portion in the middle of the first elastic member in the compression direction; The second elastic member has snap-fit ​​protrusions at both ends in the compression direction, and an arc-shaped portion in the middle of the second elastic member in the compression direction.

5. The anti-collision energy absorption device according to claim 4, characterized in that, The first baffle portion and the second baffle portion have locking grooves formed at both ends in the length direction. The openings of the two locking grooves on the first baffle portion are arranged opposite to each other, and the openings of the two locking grooves on the second baffle portion are arranged opposite to each other. The two locking protrusions on the first elastic member are respectively locked in the locking grooves of the first baffle portion and the second baffle portion, and the two locking protrusions on the second elastic member are respectively locked in the locking grooves of the first baffle portion and the second baffle portion.

6. The anti-collision energy absorption device according to claim 2, characterized in that, The first baffle portion includes: A first main board portion, wherein the first plate surface is the side of the first main board portion away from the second baffle portion; and The first side plate portion is disposed on both sides in the width direction of the first main plate portion, and the first side plate portion extends toward the second baffle portion.

7. The anti-collision energy absorption device according to claim 6, characterized in that, The second baffle portion includes: The second main board portion, the second plate surface being the side of the second main board portion away from the first baffle portion; and The second side plate is disposed on both sides of the second main plate in the width direction. The second side plate extends toward the first side plate and is aligned with the first side plate. When the elastic part is not compressed, a gap is formed between the second side plate and the first side plate.

8. The anti-collision energy absorption device according to claim 7, characterized in that, The first motherboard portion and / or the second motherboard portion are provided with a plurality of mounting holes, which are spaced apart along the length direction of the first motherboard portion and / or the second motherboard portion.

9. A battery pack, characterized in that, The battery pack includes a housing and an anti-collision energy absorption device as described in any one of claims 1 to 8, wherein the anti-collision energy absorption device is disposed at the front end of the housing.

10. A vehicle, characterized in that, The vehicle includes a battery pack, a chassis, and a collision-absorbing energy-absorbing device as described in any one of claims 1 to 8, wherein the battery pack is mounted on the chassis, the collision-absorbing energy-absorbing device is mounted on the chassis, and the collision-absorbing energy-absorbing device is disposed at the front of the battery pack.

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