Buffer structure, battery box, battery device and electric equipment

Abstract

The application provides a buffering structure, a battery box, a battery device and an electric equipment, and relates to the technical field of batteries. The buffering structure comprises a connecting piece, a first deformation piece, a second deformation piece and a third deformation piece. The connecting piece is used for being connected with a box body or a side beam of the battery box. The second deformation piece is connected between the first deformation piece and the connecting piece. The third deformation piece is connected between the second deformation piece and the connecting piece. The application improves the protection effect of the battery box by arranging the buffering structure, and improves the safety of the battery pack.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a buffer structure, battery housing, battery device and electrical equipment. Background Technology

[0002] In recent years, battery packs have become the preferred power source for new energy vehicles, and the safety of battery packs directly affects the safety of new energy vehicles.

[0003] In the prior art, a battery pack includes a battery housing and a battery, with the battery housed inside the battery housing.

[0004] However, the battery casing is more prone to deformation or even damage when subjected to external impact, resulting in poor protection for the battery and a lower safety of the battery pack. Utility Model Content

[0005] This application provides a buffer structure, a battery housing, a battery device, and an electrical appliance to solve the problems of poor protection of batteries by battery housings and poor safety of battery packs in the prior art.

[0006] Firstly, this application provides a buffer structure comprising:

[0007] A connector for connecting to the battery box body or side beam;

[0008] First deformable component;

[0009] A second deformable element is connected between the first deformable element and the connecting element;

[0010] A third deformation component is connected between the second deformation component and the connecting component.

[0011] In some possible implementations, the number of the second deformable elements is at least two, and the at least two second deformable elements are spaced apart along the first direction.

[0012] In some possible implementations, the second deformable member has a first end and a second end opposite to each other along a second direction, the first ends of at least two second deformable members are respectively connected to the two ends of the first deformable member along the first direction, the second ends of at least two second deformable members are connected to the connector, and the second direction intersects the first direction.

[0013] In some possible implementations, along the first direction, the distance between the first ends of at least two of the second deformable members is greater than the distance between the second ends of at least two of the second deformable members.

[0014] In some possible implementations, the second deformable element is arc-shaped, and at least two of the convex surfaces of the second deformable elements are arranged facing each other.

[0015] In some possible implementations, the number of the third deformation members is at least two, and along the first direction, at least two of the third deformation members are respectively connected to the side opposite to the at least two second deformation members.

[0016] In some possible implementations, the third deformation member includes at least two deformation beams spaced apart along the first direction, the two ends of the deformation beams along the first direction respectively connecting the second deformation member and the connecting member; the second direction intersects the first direction.

[0017] In some possible implementations, the deformable beam is arc-shaped, and at least two of the deformable beams have their convex surfaces facing the same direction.

[0018] In some possible implementations, the curvature of each of the deformed beams gradually decreases or remains constant along the second direction.

[0019] In some possible implementations, the radius of curvature of the deformed beam is greater than or equal to 25 mm and less than or equal to 60 mm.

[0020] In some possible implementations, the wall thickness of the second deformable member is greater than or equal to the wall thickness of the deformable beam;

[0021] And / or, the wall thickness of the second deformable member is greater than or equal to 4 mm and less than or equal to 6 mm; the wall thickness of the deformable beam is greater than or equal to 1 mm and less than or equal to 4 mm.

[0022] In some possible implementations, at least two separators are also included, the separators connecting the second deformable member and the connecting member, the separators being located between two adjacent deformable beams;

[0023] The separator is inclined relative to the second direction.

[0024] In some possible implementations, the connector, the first deformable member, the second deformable member, the third deformable member, and the separator are integrally formed.

[0025] In some possible implementations, at least two of the second deformable elements are symmetrically arranged along the first direction;

[0026] And / or, at least two of the third deformation elements are symmetrically arranged along the first direction;

[0027] And / or, at least two of the separators are symmetrically arranged along the first direction.

[0028] In some possible implementations, the number of the third deformation members is at least two, and along the first direction, at least two of the third deformation members are respectively connected to the side opposite to the at least two second deformation members;

[0029] The third deformation member includes a first deformation beam and a second deformation beam spaced apart along the first direction. One end of at least two of the first deformation beams is respectively connected to the first end of at least two of the second deformation members, and the other end of at least two of the first deformation beams is respectively connected to the two ends of the connector along the first direction. The second deformation beam is located in the space enclosed by the first deformation beam, the second deformation member and the connector.

[0030] In some possible implementations, the first deformable member and the connecting member are spaced apart along a second direction. The first deformable member includes a first buffer beam and a second buffer beam disposed opposite to each other along the second direction. Both the first buffer beam and the second buffer beam are arc-shaped, and the convex surface of the first buffer beam is disposed opposite to the convex surface of the second buffer beam.

[0031] In some possible implementations, along a first direction, the ends of the first buffer beam and the second buffer beam on the same side are connected to each other and form an included angle at the connection point.

[0032] In some possible implementations, the included angle is greater than or equal to 10° and less than or equal to 30°.

[0033] Secondly, this application provides a battery casing, comprising: a casing body and at least one buffer structure as described in the first aspect above, wherein the casing body has an inner cavity for accommodating a battery, and a connector of the buffer structure is connected to the outer surface of the casing body; or

[0034] The battery housing includes at least one side beam and at least one buffer structure in the first aspect, wherein the connector of the buffer structure is connected to the side beam to enclose and form an inner cavity for accommodating the battery.

[0035] In some possible implementations, the box body includes an upper box body, and the connector is attached to the outer side surface of the upper box body;

[0036] And / or, the box body includes a lower box body, and the connector is connected to the outer side surface of the lower box body.

[0037] Thirdly, this application provides a battery device, comprising: a battery and any of the battery housings described in the second aspect above, wherein the battery is housed within the cavity of the battery housing.

[0038] Fourthly, this application provides an electrical device, including: a device body and the battery device described in the third aspect above, wherein the battery device is disposed on the device body.

[0039] This application discloses a buffer structure, battery housing, battery device, and electrical equipment. The buffer structure connects the battery housing body or side beams to the buffer structure via connectors. By incorporating a first, second, and third deformation element, when the buffer structure is subjected to external impact, the first, second, and third deformation elements deform sequentially to absorb the impact energy. This reduces the impact energy transmitted to the connectors and further reduces the impact energy transmitted from the connectors to the battery housing body or the interior of the battery housing. Consequently, the battery housing is protected, reducing the possibility of deformation or even damage, improving the protective effect of the battery housing, and enhancing the safety of the battery pack. Attached Figure Description

[0040] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0041] Figure 1 This is a schematic diagram of the buffer structure provided in the embodiments of this application;

[0042] Figure 2 for Figure 1 Another perspective on the structure Figure 1 ;

[0043] Figure 3 for Figure 1 Another perspective on the structure Figure 2 ;

[0044] Figure 4 This is a schematic diagram of the structure of a portion of the battery housing provided in an embodiment of this application.

[0045] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments.

[0046] Explanation of reference numerals in the attached figures:

[0047] 10 - Buffer structure; 11 - Center line of symmetry; 20 - Lower housing;

[0048] 100 - Connector;

[0049] 200 - First deformable component; 210 - First buffer beam; 220 - Second buffer beam;

[0050] 300 - Second Deformation Component;

[0051] 400 - Third deformation component; 410 - First deformation beam; 420 - Second deformation beam;

[0052] 500 - Separator. Detailed Implementation

[0053] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0054] In related technologies, a battery pack includes a battery housing and batteries, with the batteries housed within the housing for protection. However, the battery housing is prone to deformation or even damage when subjected to external impacts, resulting in poor protection of the battery and consequently, lower safety of the battery pack.

[0055] Based on this, the present application provides a buffer structure that connects the battery box body or side beams with connectors. By providing a first deformation member, a second deformation member, and a third deformation member, when the buffer structure is subjected to external impact, the first deformation member, the second deformation member, and the third deformation member deform sequentially to absorb the impact energy. This reduces the impact energy transmitted to the connectors and the impact energy transmitted from the connectors to the battery box body or the inside of the battery box, thereby protecting the battery box, reducing the possibility of deformation or even damage to the battery box, and improving the protective effect of the battery box.

[0056] The embodiments of this application are described below with reference to the accompanying drawings.

[0057] Reference Figure 1 and Figure 2 The buffer structure 10 provided in this application embodiment includes: a connector 100, a first deformable member 200, a second deformable member 300 and a third deformable member 400. The connector 100 is used to connect with the battery box body or the side beam.

[0058] The second deformable element 300 is connected between the first deformable element 200 and the connector 100, and the third deformable element 400 is connected between the second deformable element 300 and the connector 100.

[0059] The first deformable component 200 and the connecting component 100 are spaced apart.

[0060] For example, the connector 100 may be plate-shaped.

[0061] Specifically, when the buffer structure 10 is subjected to an external impact, the first deformation member 200 deforms first to absorb part of the impact energy. The first deformation member 200 transfers the remaining impact energy to the second deformation member 300, causing the second deformation member 300 to deform and absorb part of the impact energy. The second deformation member 300 transfers the remaining impact energy to the third deformation member 400, causing the third deformation member 400 to deform and absorb the remaining impact energy. Thus, when the buffer structure 10 is subjected to an external impact, the impact energy can be absorbed step by step by the first deformation member 200, the second deformation member 300, and the third deformation member 400, greatly reducing the impact energy transmitted to the connector 100.

[0062] The buffer structure 10 provided in this application embodiment is connected to the battery box body by a connector 100. By providing a first deformation member 200, a second deformation member 300, and a third deformation member 400, when the buffer structure 10 is subjected to an external impact, the first deformation member 200, the second deformation member 300, and the third deformation member 400 deform sequentially to absorb the impact energy. This reduces the impact energy transmitted to the connector 100 and the impact energy transmitted from the connector 100 to the battery box body or the inside of the battery box, thereby protecting the battery box, reducing the possibility of deformation or even damage to the battery box, and improving the protective effect of the battery box.

[0063] Reference Figure 2 In some embodiments, the number of second deformable elements 300 is at least two, and the at least two second deformable elements 300 are spaced apart along a first direction (Q). The first direction is along the height direction (Q).

[0064] For example, the number of the second deformable parts 300 can be two, three or more, and there is no limitation thereto.

[0065] Optionally, the buffer structure 10 has a symmetrical center line 11, and two second deformation elements 300 are symmetrically arranged relative to the symmetrical center line 11 along a first direction (Q).

[0066] The buffer structure 10 is symmetrical with respect to the center line 11. By making the buffer structure 10 symmetrical, the stress distribution inside the buffer structure 10 is more uniform when it is subjected to external impact, reducing local stress concentration and thus lowering the risk of damage to the buffer structure 10, improving its stability, and making it less prone to tilting or deformation. Furthermore, the symmetrical structure of the buffer structure 10 ensures consistent performance in different directions, improving its overall reliability.

[0067] For example, the connector 100 is symmetrical with respect to the center line 11, and the first deformable member 200 is also symmetrical with respect to the center line 11. The opposite sides of the connector 100 in the height direction (Q) are approximately flush with the opposite sides of the first deformable member 200 in the height direction (Q). The height direction (Q) is perpendicular to the center line 11.

[0068] In a specific implementation, the second deformable member 300 has a first end and a second end opposite to each other along the second direction (P), the first ends of at least two second deformable members 300 are respectively connected to the two ends of the first deformable member 200 along the first direction (Q), and the second ends of at least two second deformable members 300 are connected to the connector 100.

[0069] The second deformation element 300 is connected to the end of the first deformation element 200 to avoid uneven energy absorption of the two second deformation elements 300 caused by uneven force on the first deformation element 200, and can also resist minor stone impacts to a certain extent.

[0070] Specifically, the second end of the second deformable member 300 is connected to the middle region of the connector 100.

[0071] Optionally, along the first direction (Q), the distance between the first ends of at least two second deformable members 300 is greater than the distance between the second ends of at least two second deformable members 300.

[0072] See Figure 1 , Figure 2 and Figure 3 The two second deformation members 300 and the first deformation member 200 form an approximate triangular structure. In this way, the two second deformation members 300 provide support between the connector 100 and the first deformation member 200, further enhancing the strength of the buffer structure 10 and reducing the deformation of the buffer structure 10.

[0073] In some embodiments, the second deformable member 300 is arc-shaped, and the convex surfaces of at least two second deformable members 300 are arranged facing each other.

[0074] By setting the second deformation component 300 to be arc-shaped, the second deformation component 300 is more likely to deform when subjected to external impact.

[0075] The second deformable element 300 has opposing concave and convex surfaces, with the convex surfaces of the two second deformable elements 300 facing each other. That is, the convex surfaces of the two second deformable elements 300 protrude towards the side of the second deformable element 300 facing the center line of symmetry 11. Therefore, when the second deformable element 300 is subjected to an external impact, it will undergo compressive deformation towards the center line of symmetry 11. Compared to having the concave surface of the second deformable element 300 facing the center line of symmetry 11, the second deformable element 300 is more prone to bending and can better disperse and absorb impact energy, resulting in higher energy absorption efficiency.

[0076] For example, both the convex and concave surfaces of the second deformable member 300 can be arc surfaces, and the axes of the convex and concave surfaces of the second deformable member 300 coincide. The radius of the convex surface of the second deformable member 300 is... Figure 2 As shown in the figure, R1 can be 77mm.

[0077] Reference Figure 2 In specific implementation, there are two third deformation elements 400. Along the first direction (Q), at least two third deformation elements 400 are respectively connected to the opposite side of at least two second deformation elements 300.

[0078] The third deformation member 400 is disposed between the concave surface of the second deformation member 300 and the connector 100. The two sides of the third deformation member 400 along the first direction (Q) are respectively connected to the concave surface of the second deformation member 300 and the connector 100.

[0079] In a specific implementation, the third deformation member 400 includes at least two deformation beams spaced apart along the first direction (Q), and the two ends of the deformation beams along the second direction (P) are respectively connected to the second deformation member 300 and the connecting member 100.

[0080] The deformation beams are arranged sequentially at intervals along the second direction (P). By using at least two deformation beams, the impact energy is distributed among the beams, preventing any single beam from being damaged by excessive impact force in a short period of time. It is understood that the specific number of deformation beams can be adaptively set according to actual impact resistance requirements.

[0081] In some embodiments, the deformable beams are arc-shaped, and the convex surfaces of at least two deformable beams face the same direction.

[0082] By setting the deformation beam to an arc shape, the deformation beam is more likely to deform when subjected to external impact.

[0083] The convex surface of the deformation beam faces the center line 11 of symmetry, so that when the deformation beam is subjected to external impact, it will compress and deform towards the center line 11 of symmetry, making the deformation beam easier to bend and better able to disperse and absorb impact energy, resulting in higher energy absorption efficiency.

[0084] In some embodiments, along the second direction (P), the curvature of each deformed beam gradually decreases or remains constant.

[0085] In this way, the deformation beams closer to the connector 100 are more likely to deform than those closer to the center line of symmetry 11, allowing each deformation beam to deform sequentially from away from the center line of symmetry 11 to close to the center line of symmetry 11, thus achieving energy absorption through gradual deformation and preventing the deformation beams closer to the center line of symmetry 11 from deforming before those closer to the connector 100.

[0086] In some embodiments, along the first direction (Q), the wall thickness of the deformable beam near the center line 11 is greater than the wall thickness of the deformable beam near the end of the connector 100.

[0087] In practice, the radius of curvature of the deformed beam is greater than or equal to 25 mm and less than or equal to 60 mm.

[0088] When the radius of curvature of the deformation beam is less than 25mm, the structural size of the deformation beam is small, and it can play a good role in energy absorption due to deformation. When the radius of curvature of the deformation beam is greater than 60mm, the deformation beam is not easy to deform. When the buffer structure 10 is subjected to external impact, the deformation beam cannot deform and absorb energy in time, resulting in the external impact energy being more easily transferred to the battery box body. Consequently, the buffer structure 10 cannot effectively protect against external impacts, and the protection of the battery box body is insufficient. Therefore, the radius of curvature of the deformation beam is greater than or equal to 25mm and less than or equal to 60mm.

[0089] Reference Figure 2 The wall thickness of the first deformed component 200 is Figure 2 As shown in T1, the wall thickness of the second deformable component 300 is Figure 2 As shown in T2. ​​In specific implementation, the wall thickness T2 of the second deformable member 300 is greater than or equal to the wall thickness of the deformable beam.

[0090] In some embodiments, the wall thickness of the deformable beam is greater than or equal to the wall thickness T1 of the first deformable member 200.

[0091] The second deformable element 300 provides support for the first deformable element 200 and the third deformable element 400, and can transfer external impact energy from the first deformable element 200 to the third deformable element 400. Therefore, the second deformable element 300 needs to have a larger thickness.

[0092] For example, the wall thickness T2 of the second deformable member 300 is greater than or equal to 4 mm and less than or equal to 6 mm. The wall thickness of the deformable beam is greater than or equal to 1 mm and less than or equal to 4 mm. The wall thickness T1 of the first deformable member 200 is greater than or equal to 1 mm and less than or equal to 3 mm.

[0093] Reference Figure 1 and Figure 2 The buffer structure 10 provided in this embodiment further includes at least two separators 500. The separators 500 connect the second deformable member 300 and the connecting member 100, and the separators 500 are located between two adjacent deformable beams. The separators 500 are inclined relative to the second direction (P).

[0094] Specifically, by providing separators 500, the area between the second deformable member 300 and the connecting member 100 is divided into at least two sub-regions, and each sub-region is provided with at least one deformable beam. It is understood that the specific number of separators 500 can be adaptively set according to actual impact resistance requirements.

[0095] For example, the curvature of the separator 500 is zero, that is, the separator 500 is flat, or the separator 500 has an extremely large curvature. This makes the separator 500 less prone to deformation and collapse. The plane containing the two separators 500 intersects the center line 11 of symmetry at the same point.

[0096] Specifically, upon external impact, the deformation beam on the side of the separator 500 away from the center line 11 deforms first and absorbs energy. Then, the separator 500 deforms and absorbs energy, and finally, the deformation beam on the side of the separator 500 facing the center line 11 deforms and absorbs energy. This prevents the deformation beams closer to the center line 11 from deforming first, thus avoiding smaller deformation of the beams further away from the center line 11. This, in turn, prevents severe failure of the buffer structure 10 and ensures that each deformation beam can fully utilize its tiered energy absorption effect.

[0097] In some embodiments, the connector 100, the first deformable member 200, the second deformable member 300, the third deformable member 400, and the separator 500 are integrally formed.

[0098] This eliminates the seams and connection points between the connector 100, the first deformable component 200, the second deformable component 300, the third deformable component 400, and the separator 500, thereby improving the overall strength and durability of the buffer structure 10. Simultaneously, the one-piece molding reduces manufacturing steps and assembly time, thus improving production efficiency.

[0099] For example, the first deformable part 200, the connector 100, the second deformable part 300, the third deformable part 400, and the separator 500 are integrally extruded.

[0100] In some examples, the buffer structure 10 may be made of 6-series aluminum, such as 6061-T6.

[0101] Reference Figure 1 and Figure 2 In some embodiments, the number of third deformation members 400 is at least two, and along the first direction (Q), at least two third deformation members 400 are respectively connected to the side opposite to the at least two second deformation members 300.

[0102] It should be noted that the number of the third deformation component 400 can be two, three or more, and there are no requirements.

[0103] The third deformation member 400 includes a first deformation beam 410 and a second deformation beam 420 spaced apart along a first direction (Q). One end of at least two of the first deformation beams 410 is respectively connected to the first end of at least two of the second deformation members 300, and the other end of at least two of the first deformation beams 410 is respectively connected to the two ends of the connector 100 along the first direction (Q). The second deformation beam 420 is located in the space enclosed by the first deformation beams 410, the second deformation members 300 and the connector 100.

[0104] The separator 500 is located between the first deformation beam 410 and the second deformation beam 420. When the buffer structure 10 is subjected to an external impact, the first deformation beam 410 deforms first and absorbs energy, then the separator 500 deforms and absorbs energy, and the second deformation beam 420 deforms and absorbs energy after the separator 500 deforms.

[0105] The first deformable element 200, the connecting element 100, and the two first deformable beams 410 together define the first buffer cavity, and the second deformable element 300 and the second deformable beam 420 are located inside the first buffer cavity.

[0106] For example, both the first deformable beam 410 and the second deformable beam 420 are arc-shaped, and the convex surfaces of the first deformable beam 410 and the second deformable beam 420 are oriented towards the center line 11 of symmetry. That is to say, the convex surfaces of the first deformable beam 410 and the second deformable beam 420 are arranged facing each other.

[0107] The concave surfaces of both the first deformed beam 410 and the second deformed beam 420 are circular arc surfaces. The radius of the concave surface of the first deformed beam 410 is... Figure 2 As shown by R2, R2 can be 60mm. The radius of the concave surface of the second deformed beam 420 is... Figure 2 As shown in R3, R3 can be 25mm.

[0108] Reference Figure 2 The wall thickness of the first deformed beam 410 is Figure 2 As shown in T3, the wall thickness of the second deformed beam 420 is Figure 2 As shown in T4. The wall thickness of the separator 500 is... Figure 2 As shown in T5. In specific implementation, the wall thickness T4 of the second deformable beam 420 is greater than or equal to the wall thickness T3 of the first deformable beam 410, the wall thickness T4 of the second deformable beam 420 is less than the wall thickness T2 of the second deformable component 300, and the wall thickness T1 of the first deformable component 200 is less than or equal to the wall thickness T3 of the first deformable beam 410. The wall thickness T5 of the separator 500 is greater than or equal to the wall thickness T3 of the first deformable beam 410 and less than or equal to the wall thickness T4 of the second deformable beam 420, that is, T2>T4≥T5≥T3≥T1.

[0109] Reference Figure 1 and Figure 2 In a specific implementation, the first deformable member 200 and the connecting member 100 are spaced apart along the second direction (P). The first deformable member 200 includes a first buffer beam 210 and a second buffer beam 220 that are arranged opposite to each other along the second direction (P). The first buffer beam 210 and the second buffer beam 220 are arc-shaped, and the convex surface of the first buffer beam 210 is arranged opposite to the convex surface of the second buffer beam 220.

[0110] When the buffer structure 10 is subjected to an external impact, the first buffer beam 210 and the second buffer beam 220 deform to absorb part of the impact energy and reduce the impact transmitted to the second deformation member 300.

[0111] The convex surfaces of the first buffer beam 210 and the second buffer beam 220 are arranged opposite to each other, so that the first buffer beam 210 and the second buffer beam 220 together define the second buffer cavity. By setting the second buffer cavity, external impact energy can be effectively absorbed and dispersed, further reducing the impact transmitted to the second deformable component 300. At the same time, the second buffer cavity can also play a vibration damping role, reducing the impact of vibration on the battery box.

[0112] For example, the convex surface of the first buffer beam 210 can be an arc surface, and the axis of the convex surface of the first buffer beam 210 coincides with the axis of the convex surface of the first buffer beam 210, and this axis is located on the center line of symmetry 11. The radius of the convex surface of the first buffer beam 210 is... Figure 2 As shown in Figure R4, R4 can be 128mm. The first buffer beam 210 and the second buffer beam 220 are symmetrical.

[0113] The first buffer beam 210, the connector 100, and the two first deformation beams 410 together define the first buffer cavity. The second buffer beam 220 is located inside the first buffer cavity, and the second buffer cavity is also located inside the first buffer cavity.

[0114] In some embodiments, along the first direction (Q), the ends of the first buffer beam 210 and the second buffer beam 220 on the same side are connected to each other, forming an included angle at the connection point. That is to say, the second buffer cavity formed by the first buffer beam 210 and the second buffer beam 220 is a circumferentially closed chamber, and at the connection point of the first buffer beam and the second buffer beam, they support each other to buffer external impacts.

[0115] See Figure 3 In some implementations, the included angle (α) is greater than or equal to 10° and less than or equal to 30°.

[0116] It should be noted that, in this embodiment, the included angle is formed by the line segment AC and BC connecting the connection point C of the first buffer beam 210 and the second buffer beam 220 to the top A and B of the corresponding arc convex surface. The included angle between AC and BC is α.

[0117] In this embodiment of the application, the included angle (α) can be 10°, 12°, 14°, 18°, 19°, 20°, 24°, 26°, 28°, 30°, etc., and there are no requirements for the specific angle of the included angle (α).

[0118] Reference Figure 4 Based on the above embodiments, this application provides a battery box, including: a box body and at least one of the above-mentioned buffer structures 10, wherein the connector 100 of the buffer structure 10 is connected to the outer side of the box body.

[0119] In some embodiments, the battery housing includes at least one side beam and at least one of the aforementioned buffer structures 10, with a connector 100 of the buffer structure 10 connected to the side beam to enclose an inner cavity for accommodating the battery.

[0120] The specific structure of the buffer structure 10 has been described in detail in the above embodiments and will not be repeated here.

[0121] For example, the buffer structure 10 may be integrally formed with at least part of the box body, or it may be connected to the box body by screws, riveting or welding.

[0122] The battery housing provided in this application embodiment has a buffer structure 10 connected to the main body or side beam of the battery housing via a connector 100. By providing a first deformation member 200, a second deformation member 300, and a third deformation member 400, when the buffer structure 10 is subjected to an external impact, the first deformation member 200, the second deformation member 300, and the third deformation member 400 deform sequentially to absorb the impact energy. This reduces the impact energy transmitted to the connector 100 and the impact energy transmitted from the connector 100 to the battery housing, thereby protecting the battery housing, reducing the possibility of deformation or even damage to the battery housing, and improving the protective effect of the battery housing.

[0123] In a specific implementation, the box body includes an upper box body, and the connector 100 is connected to the outer side of the upper box body; and / or, the box body includes a lower box body 20, and the connector 100 is connected to the outer side of the lower box body 20.

[0124] For example, the upper housing includes a cover plate, and the lower housing 20 includes a battery tray, with the cover plate covering the battery tray. The connector 100 of the buffer structure 10 is disposed around the periphery of the battery tray.

[0125] For example, the battery tray has at least one first mounting surface on its periphery, and the connector 100 of the buffer structure 10 has a second mounting surface on the side opposite to the second deformable member 300. The first mounting surface is connected to the second mounting surface. For example, there can be two first mounting surfaces, which are arranged along a preset direction and opposite to each other. This allows the battery tray to be connected to the buffer structure 10 on both sides in the preset direction, thus protecting the battery tray on both sides in the preset direction and improving the battery case's impact resistance in that direction.

[0126] Furthermore, both the first mounting surface and the second mounting surface can be planar. The second mounting surface can completely cover the first mounting surface. The dimensions of the second mounting surface can be the same as the dimensions of the first mounting surface.

[0127] Specifically, after the buffer structure 10 is manufactured using an integral extrusion molding process, the required length of the buffer structure 10 can be cut according to the length of the first mounting surface in the extension direction, and then the cut buffer structure 10 can be connected to the first mounting surface.

[0128] Based on the above embodiments, this application provides a battery device, including a battery and a battery housing, wherein the battery is housed in the inner cavity of the battery housing.

[0129] Based on the above embodiments, this application provides an electrical device, including a device body and a battery device, wherein the battery device is disposed on the device body.

[0130] For example, electrical equipment can be vehicles, ships, aircraft, etc.

[0131] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0132] In the embodiments of this application, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this application according to the specific circumstances.

[0133] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0134] Unless otherwise stated, the term "multiple" means two or more.

[0135] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the scope of this application is limited only by the appended claims.

Claims

1. A buffer structure, characterized in that, include: A connector (100) is used to connect to the body or side beam of the battery box. First deformable component (200); A second deformable element (300) is connected between the first deformable element (200) and the connecting element (100); A third deformation element (400) is connected between the second deformation element (300) and the connector (100).

2. The buffer structure according to claim 1, characterized in that, The number of the second deformation member (300) is at least two, and the at least two second deformation members (300) are spaced apart along the first direction.

3. The buffer structure according to claim 2, characterized in that, The second deformable member (300) has a first end and a second end opposite to each other along a second direction. The first ends of at least two second deformable members (300) are respectively connected to the two ends of the first deformable member (200) along the first direction. The second ends of at least two second deformable members (300) are connected to the connector (100). The second direction intersects the first direction.

4. The buffer structure according to claim 3, characterized in that, Along the first direction, the distance between the first ends of at least two of the second deformable members (300) is greater than the distance between the second ends of at least two of the second deformable members (300).

5. The buffer structure according to claim 2, characterized in that, The second deformable element (300) is arc-shaped, and the convex surfaces of at least two second deformable elements (300) are arranged facing each other.

6. The buffer structure according to claim 2, characterized in that, The number of the third deformation element (400) is at least two, and along the first direction, at least two of the third deformation elements (400) are respectively connected to the side opposite to the at least two second deformation elements (300).

7. The buffer structure according to claim 6, characterized in that, The third deformation member (400) includes at least two deformation beams spaced apart along the first direction. The two ends of the deformation beams along the second direction are respectively connected to the second deformation member (300) and the connecting member (100). The second direction intersects the first direction.

8. The buffer structure according to claim 7, characterized in that, The deformable beam is arc-shaped, and the convex surfaces of at least two of the deformable beams face the same direction.

9. The buffer structure according to claim 8, characterized in that, Along the second direction, the curvature of each of the deformed beams gradually decreases or remains constant.

10. The buffer structure according to claim 8, characterized in that, The radius of curvature of the deformed beam is greater than or equal to 25 mm and less than or equal to 60 mm.

11. The buffer structure according to claim 7, characterized in that, The wall thickness of the second deformable member (300) is greater than or equal to the wall thickness of the deformable beam; And / or, the wall thickness of the second deformable member (300) is greater than or equal to 4 mm and less than or equal to 6 mm; the wall thickness of the deformable beam is greater than or equal to 1 mm and less than or equal to 4 mm.

12. The buffer structure according to claim 7, characterized in that, It also includes at least two separators (500), the separators (500) connecting the second deformable member (300) and the connecting member (100), the separators (500) being located between two adjacent deformable beams; The separator (500) is inclined relative to the second direction.

13. The buffer structure according to claim 12, characterized in that, The connector (100), the first deformable member (200), the second deformable member (300), the third deformable member (400), and the separator (500) are integrally formed.

14. The buffer structure according to claim 12, characterized in that, At least two of the second deformable elements (300) are symmetrically arranged along the first direction; And / or, at least two of the third deformation elements (400) are symmetrically arranged along the first direction; And / or, at least two of the separators (500) are symmetrically arranged along the first direction.

15. The buffer structure according to claim 3, characterized in that, The number of the third deformation element (400) is at least two, and along the first direction, at least two of the third deformation elements (400) are respectively connected to the side opposite to the at least two second deformation elements (300); The third deformation member (400) includes a first deformation beam (410) and a second deformation beam (420) spaced apart along the first direction. One end of at least two of the first deformation beams (410) is respectively connected to the first end of at least two of the second deformation members (300), and the other end of at least two of the first deformation beams (410) is respectively connected to the two ends of the connector (100) along the first direction. The second deformation beam (420) is located in the space enclosed by the first deformation beam (410), the second deformation member (300) and the connector (100).

16. The buffer structure according to any one of claims 1-15, characterized in that, The first deformable member (200) and the connecting member (100) are spaced apart along the second direction. The first deformable member (200) includes a first buffer beam (210) and a second buffer beam (220) arranged opposite to each other along the second direction. Both the first buffer beam (210) and the second buffer beam (220) are arc-shaped. The convex surface of the first buffer beam (210) is arranged opposite to the convex surface of the second buffer beam (220).

17. The buffer structure according to claim 16, characterized in that, Along the first direction, the ends of the first buffer beam (210) and the second buffer beam (220) on the same side are connected to each other and form an angle at the connection point.

18. The buffer structure according to claim 17, characterized in that, The included angle is greater than or equal to 10° and less than or equal to 30°.

19. A battery housing, characterized in that, The battery enclosure includes a enclosure body and at least one buffer structure (10) as described in any one of claims 1-18, the enclosure body having an inner cavity for accommodating the battery, and a connector (100) of the buffer structure (10) being connected to the outer surface of the enclosure body; or The battery housing includes at least one side beam and at least one buffer structure (10) as described in any one of claims 1-18, wherein a connector (100) of the buffer structure (10) is connected to the side beam to enclose an inner cavity for accommodating the battery.

20. The battery housing according to claim 19, characterized in that, The box body includes an upper box body, and the connector (100) is connected to the outer side of the upper box body; And / or, the box body includes a lower box body (20), and the connector (100) is connected to the outer side of the lower box body (20).

21. A battery device, characterized in that, include: The battery and the battery housing according to claim 19 or 20, wherein the battery is housed within the cavity of the battery housing.

22. An electrical appliance, characterized in that, include: The device body and the battery device of claim 21, wherein the battery device is disposed on the device body.

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