Battery and vehicle

Abstract

The utility model discloses a battery and a vehicle, and belongs to the technical field of vehicle parts. The battery comprises a box body structure, a battery module and an energy absorption structure, the battery module is mounted in a containing cavity of the box body structure, and the battery module comprises a plurality of battery monomers which are distributed in an array; the energy absorption structure is mounted in at least one of the accommodating cavity and the battery monomers and is positioned between the battery module and the box body structure, and the projection of each battery monomer on the outermost side along the left-right direction at least partially coincides with the projection of the energy absorption structure along the left-right direction. The energy absorption structure is arranged between the battery module and the box body structure, and the projection of each battery monomer on the outermost side along the left-right direction at least partially coincides with the projection of the energy absorption structure along the left-right direction, so that the possibility of deformation of the outer surface of the box body structure along the left-right direction is reduced; and the deformation fracture part of the box body structure in the left-right direction is hindered to reduce the risk of puncturing the battery monomers, so that the safety performance of the vehicle is improved as much as possible.

Description

Technical Field

[0001] The present application belongs to the technical field of vehicle parts, and in particular, relates to a battery and a vehicle. Background Art

[0002] As electric vehicles become more mature, the density, energy requirements and safety performance requirements for electric vehicle battery packs are getting higher and higher. Since the battery pack is often installed on the vehicle body through the side beams on the left and right sides of the battery pack, it is currently common to increase the overall thickness of the side beams and increase the number of reinforcing ribs to improve the load-bearing capacity of the battery pack side beams to ensure that the side column collision standard can be met. However, whether it is increasing the overall thickness of the side beams or increasing the number of reinforcing ribs, it will not only increase the cost and weight, affecting the development requirements of lightweight vehicles; it will also reduce the distance between the side beams and the battery cells of the battery pack, increase the risk of the battery cells being squeezed in the side column collision test, and the risk of the side beams deforming and breaking and puncturing the battery cells, which will cause leakage, fire, or even explosion. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a battery and a vehicle, by arranging an energy absorption structure between the battery module and the box structure, and the projection of each outermost battery cell in the left-right direction at least partially overlaps with the projection of the energy absorption structure in the left-right direction, so that the energy absorption structure can absorb and disperse the impact force, reduce the possibility of deformation of the outer surface of the box structure in the left-right direction, and hinder the deformation and fracture of the box structure in the left-right direction to reduce the risk of puncturing the battery cell, so as to maximize the safety performance of the vehicle.

[0004] In a first aspect, the present application provides a battery, comprising:

[0005] A box structure, wherein the box structure defines a receiving cavity;

[0006] A battery module is installed in the accommodating cavity, and the battery module includes a plurality of battery cells distributed in an array;

[0007] An energy absorbing structure is installed in at least one of the accommodating cavity and the battery cells and is located between the battery module and the box structure, and the projection of the outermost battery cells along the left-right direction at least partially overlaps with the projection of the energy absorbing structure along the left-right direction.

[0008] According to the battery of the present application, since the projections of each battery cell in the battery assembly located on the far left and the battery assembly on the far right at least partially overlap with the projections of the energy absorbing structure in the left and right directions, that is, the energy absorbing structure is located between the inner side of the lower box body and the outer side of each battery cell in the left and right directions, when the vehicle collides sideways, one of the two opposite side surfaces of the box body structure arranged in the left and right directions is first subjected to the impact force, and protects all the battery cells on the far left and right sides, so that the impact force can be absorbed and dispersed by the energy absorbing structure, reducing the possibility of deformation of the outer surface of the box body structure in the left and right directions, and hindering the deformed and broken parts of the box body structure in the left and right directions to reduce the risk of puncturing the battery cells, thereby maximizing the safety performance of the vehicle.

[0009] According to one embodiment of the present application, the energy absorbing structure includes:

[0010] The main body is a rectangular structure with a hollow interior.

[0011] According to an embodiment of the present application, the main body is provided with a mounting through slot along the front-to-back direction, and the energy absorbing structure further includes:

[0012] A buffer portion is installed in the installation slot, and the material of the buffer portion is different from that of the main body.

[0013] According to one embodiment of the present application, the buffer portion includes:

[0014] A plurality of buffer sections are sequentially distributed along the up-down direction, and the inclined directions of two adjacent buffer sections are opposite.

[0015] According to one embodiment of the present application, the energy absorbing structure further includes:

[0016] The heat preservation part is arranged on a side of the main body close to the battery module.

[0017] According to an embodiment of the present application, the energy absorbing structure and the battery cell are connected by gluing.

[0018] According to an embodiment of the present application, the energy absorbing structure is made of at least one of a metal material and a polymer material.

[0019] According to one embodiment of the present application, the box structure includes a bottom plate and a front plate, a left plate, a rear plate and a right plate respectively fixedly connected to the bottom plate and extending upward, and used to enclose and form the accommodating cavity, wherein:

[0020] The left side plate and the right side plate both include vertical side beams, the front and rear ends of the vertical side beams are respectively connected to the front plate and the rear plate, the vertical side beams are provided with at least two first through grooves along the front-to-back direction, at least two of the first through grooves are spaced apart along the up-down direction, and in the up-down direction, a side of the first through groove close to the adjacent first through groove is an upwardly protruding arc surface.

[0021] According to an embodiment of the present application, the distance between two adjacent arc-shaped surfaces gradually decreases from the two ends to the middle in the left-right direction.

[0022] In a second aspect, the present application provides a vehicle, the vehicle comprising:

[0023] body; and

[0024] The battery as described above is mounted on the vehicle body.

[0025] According to the vehicle of the present application, an energy-absorbing structure is provided between the battery module and the box structure in the battery, and the projection of each outermost battery cell along the left-right direction at least partially overlaps with the projection of the energy-absorbing structure along the left-right direction, so that the energy-absorbing structure can absorb and disperse the impact force, thereby reducing the possibility of deformation of the outer surface of the box structure along the left-right direction, and hindering the deformation and fracture part of the box structure along the left-right direction to reduce the risk of puncturing the battery cell, thereby maximizing the safety performance of the vehicle.

[0026] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] Figure 1 is a schematic structural diagram of a battery provided in an embodiment of the present application with the upper cover and some battery cells hidden;

[0029] Figure 2 is a structural schematic diagram of an energy absorbing structure provided in an embodiment of the present application;

[0030] Figure 3 The structure diagram of the battery provided in the embodiment of the present application with the upper cover, front plate and part of the battery cells hidden is shown in FIG. Figure 1 ;

[0031] Figure 4 yes Figure 3 A partial enlarged view of the middle A;

[0032] Figure 5The structure diagram of the battery provided in the embodiment of the present application with the upper cover, front plate and part of the battery cells hidden is shown in FIG. Figure 2 ;

[0033] Figure 6 is a schematic structural diagram of another vertical side beam provided in an embodiment of the present application;

[0034] Figure 7 It is a structural schematic diagram of another energy absorption structure provided in an embodiment of the present application.

[0035] Reference numerals:

[0036] 110. Bottom plate; 120. Front plate; 130. Back plate;

[0037] 141, vertical side beam; 1411, first through groove; 14111, arc surface; 1412, first inclined surface; 1413, first section;

[0038] 1414, second paragraph;

[0039] 142, transverse side beam; 1421, second through groove;

[0040] 201. Battery cell;

[0041] 300, energy absorbing structure; 301, third section; 302, fourth section; 310, main body; 311, installation slot; 321, buffer section. DETAILED DESCRIPTION

[0042] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0043] Reference below Figure 1-Figure 5 The battery provided in an embodiment of the present application is described, and the battery includes a box structure, a battery module and an energy absorption structure 300.

[0044] It should be noted that the battery is usually installed at the bottom or rear of the vehicle, so the front and rear direction of the battery is consistent with the front and rear direction of the vehicle, the left and right direction of the battery is consistent with the left and right direction of the vehicle, and the up and down direction of the battery is consistent with the up and down direction of the vehicle, that is, the position direction of the battery is consistent with the position direction of the vehicle, so the front and rear direction in this application is the longitudinal direction of the vehicle; the left and right direction is the lateral direction of the vehicle; and the up and down direction is the vertical direction of the vehicle.

[0045] The box structure defines a receiving cavity.

[0046] It is understandable that the box structure includes an upper cover and a lower box body connected to each other, the lower box body has a receiving cavity with an opening facing upward, and the lower cover is provided at the opening. The materials of the upper cover and the lower box body include but are not limited to stainless steel, aluminum alloy or titanium alloy. The connection method between the upper cover and the lower box body includes but is not limited to bolt connection, rivet connection or snap connection. It should be noted that the size and shape of the receiving cavity and the opening can be designed according to actual needs, and this embodiment does not impose specific restrictions on this.

[0047] In this embodiment, the upper and lower surfaces of the upper cover are concave and convex to improve the mode of the battery during vibration. The upper cover is a hollow structure to meet the requirements of lightweight. For example, the upper cover can be an aluminum die-casting structural panel. The design of die-casting structural parts is relatively flexible, which can not only meet complex structural requirements, but also improve the overall strength through local reinforcement design.

[0048] The battery module is installed in the accommodating cavity, and the battery module includes a plurality of array-distributed battery cells 201, which are used to maximize the battery storage capacity. It should be noted that the number and specifications of the battery cells 201 can be designed according to actual needs, and this embodiment does not impose specific restrictions on this.

[0049] In this embodiment, a plurality of battery cells 201 are arranged at intervals along the front-to-back direction to form a battery assembly, and a plurality of battery assemblies are arranged at intervals along the left-to-right direction to form a battery module. It should be noted that the number of battery cells 201 in a single battery assembly and the number of battery assemblies can be designed according to the size of the accommodating cavity, and this embodiment does not impose any specific restrictions on this.

[0050] The energy absorbing structure 300 is installed in at least one of the accommodating cavity and the battery cell 201, and is located between the battery module and the box structure, and the projection of each outermost battery cell 201 along the left-right direction at least partially overlaps with the projection of the energy absorbing structure 300 along the left-right direction. The connection method between the energy absorbing structure 300 and the box structure and the connection method between the energy absorbing structure 300 and the battery cell 201 include but are not limited to threaded connection, welding or snap connection, etc.

[0051] It can be understood that since the projections of each battery cell 201 in the battery assembly located on the far left and the battery assembly on the far right at least partially overlap with the projections of the energy absorbing structure 300 in the far left and right directions, that is, the energy absorbing structure 300 is located between the inner side of the lower box body and the outer side of each battery cell 201 in the far left and right directions, when the vehicle collides sideways, one of the two opposite side surfaces of the box body structure arranged in the far left and right directions is first subjected to the impact force, so that the impact force can be absorbed and dispersed by the energy absorbing structure 300, and all the battery cells 201 on the far left and right sides are protected, the possibility of deformation of the outer surface of the box body structure in the far left and right directions is reduced, and the deformed and broken parts of the box body structure in the far left and right directions are hindered to reduce the risk of puncturing the battery cells 201, thereby maximizing the safety performance of the vehicle.

[0052] According to the battery provided in the embodiment of the present application, an energy absorbing structure 300 is arranged between the battery module and the box structure, and the projection of each outermost battery cell 201 along the left and right direction at least partially overlaps with the projection of the energy absorbing structure 300 along the left and right direction, so that the energy absorbing structure 300 can absorb and disperse the impact force, reduce the possibility of deformation of the outer surface of the box structure along the left and right direction, and hinder the deformation and fracture part of the box structure along the left and right direction to reduce the risk of puncturing the battery cell 201, so as to maximize the safety performance of the vehicle.

[0053] In some embodiments, the energy absorbing structure 300 and the battery cell 201 are connected by gluing, thereby improving the strength and modality of the battery module. Figure 1 , Figures 3 to 5 As shown, the energy absorbing structure 300 may also be glued to the two inner side surfaces of the lower box structure arranged along the left and right directions, and this embodiment does not impose any specific limitation on this.

[0054] In some embodiments, Figure 2 As shown, the energy absorbing structure 300 includes a main body 310, which is a rectangular structure with a hollow interior. The material of the main body 310 includes but is not limited to aluminum and plastic, and the plastic can be Modified Polypheylene ether (MPPE), polyvinyl chloride (PVC) or engineering plastic alloy (PC+ABS).

[0055] It is understandable that, considering that the accommodating cavity and the battery cell 201 are both rectangular structures, the main body 310 is rectangular, so as to maximize the contact area with the accommodating cavity and / or the battery cell 201, so as to ensure the buffering energy absorption effect as much as possible. At the same time, compared with the solid main body 310 in some embodiments, the main body 310 in this embodiment is hollow inside, which can not only provide deformation space to enhance the buffering energy absorption effect, but also reduce weight and manufacturing costs.

[0056] In this embodiment, the main body 310 is made of aluminum, which has the characteristics of short mold opening cycle, low manufacturing cost and high structural strength. It not only has simple processing technology and is easy to assemble, but also can meet the requirements of lightweight vehicles.

[0057] In some embodiments, Figure 2 As shown, the main body 310 is provided with a mounting groove 311 along the front-to-back direction, and the energy absorbing structure 300 also includes a buffer portion, which is installed in the mounting groove 311, and the material of the buffer portion is different from that of the main body 310. The buffer portion and the main body 310 can be connected in a filling manner. It should be noted that the shape and size of the mounting groove 311 can be designed according to actual needs, and this embodiment does not impose specific restrictions on this.

[0058] It is understandable that by providing the installation slot 311 that runs through the main body 310 in the front-to-back direction, the main body 310 is hollow inside, and the buffer part is conveniently installed in the main body 310. Since the buffer part and the main body 310 are made of different materials, more random deformation can be generated, thereby releasing the external impact force more effectively, further improving the buffering energy absorption effect. In this embodiment, the buffer part can be made of a rubber-like flexible material or a polyurethane-like foam material, which has the characteristics of not easily causing permanent deformation and being reusable after a low-speed collision, which is conducive to reducing maintenance costs.

[0059] In some embodiments, the energy absorbing structure 300 is made of at least one of a metal material and a polymer material.

[0060] It should be noted that, in combination with the above, the energy absorbing structure 300 may be in at least one of the following structural forms:

[0061] First, a solid main body 310, which can be made of a rubber-like flexible material or a polyurethane-like foamed material, or can be made of aluminum and plastic. Specifically, the plastic can be Modified Polypheyleneether (MPPE), Polyvinyl chloride (PVC) or engineering plastic alloy (PC+ABS), etc.;

[0062] Second, the main body 310 is hollow inside. The main body 310 can be made of aluminum or plastic. Specifically, the plastic can be Modified Polypheylene ether (MPPE), polyvinyl chloride (PVC) or engineering plastic alloy (PC+ABS).

[0063] Third, a main body 310 having an installation slot 311 extending therethrough and a buffer portion arranged in the installation slot 311. The main body 310 may be made of aluminum and plastic. Specifically, the plastic may be Modified Polypheylene ether (MPPE), polyvinyl chloride (PVC) or engineering plastic alloy (PC+ABS), etc. The buffer portion may be made of a rubber-like flexible material or a polyurethane-like foam material.

[0064] It should be noted that when the main body 310 is made of plastic, the main body 310 also needs to have insulation capability.

[0065] In some embodiments, Figure 2 As shown, the buffer portion includes a plurality of buffer segments 321 distributed in sequence along the up-down direction, and the inclination directions of two adjacent buffer segments 321 are opposite. It should be noted that the number of buffer segments 321 and the inclination angle of the buffer segments 321 can be designed according to actual needs, and this embodiment does not limit this.

[0066] It can be understood that by making the inclination directions of two buffer sections 321 adjacent to each other in the up-down direction opposite, the cross section of the buffer part is made into a herringbone shape, so that the directions of the impact forces received by each buffer section 321 when an external force impacts are different, thereby generating a more random deformation, thereby making the external impact force more effectively released, and further improving the buffering energy absorption effect. Of course, in other embodiments, the cross section of the buffer part can also be made into a honeycomb shape to increase the energy absorption effect, and this embodiment does not make any specific restrictions on this.

[0067] In some embodiments, the energy absorbing structure 300 further includes a heat preservation part, which is disposed on a side of the main body 310 close to the battery module to reduce heat exchange of the battery during driving, improve the heat preservation effect, and reduce energy consumption. In this embodiment, the material of the heat preservation part includes but is not limited to plastic.

[0068] It should be noted that when the material of the main body 310 is plastic, the heat-insulating portion and the main body 310 can be an integrally formed structure, thereby reducing the manufacturing process and cost.

[0069] In some embodiments, Figure 1As shown, the lower box body includes a bottom plate 110 and a front plate 120, a left side plate, a rear plate 130 and a right side plate which are respectively fixedly connected to the bottom plate 110 and extend upward. The bottom plate 110, the front plate 120, the left side plate, the rear plate 130 and the right side plate are arranged to form a receiving cavity with an opening facing upward. The materials of the bottom plate 110, the front plate 120, the left side plate, the rear plate 130 and the right side plate may include but are not limited to stainless steel, aluminum alloy or titanium alloy. The connection method between the bottom plate 110, the front plate 120, the left side plate, the rear plate 130 and the right side plate includes but is not limited to welding. It should be noted that the size and shape of the base, the front plate 120, the left side plate, the rear plate 130 and the right side plate can be designed according to actual needs, and this embodiment does not impose specific restrictions on this.

[0070] In this example, both the front plate 120 and the rear plate 130 adopt a hollow structure, which can reduce the weight of the box body while ensuring the strength of the lower box body.

[0071] In some embodiments, Figure 1 , Figures 3 to 5 As shown, both the left side plate and the right side plate include a vertical side beam 141, the energy absorption structure 300 is located between the vertical side beam 141 and the adjacent battery assembly, the front end of the vertical side beam 141 is connected to the front plate 120, and the rear end of the vertical side beam 141 is connected to the rear plate 130, and the vertical side beam 141 is provided with at least two first through grooves 1411 along the front-to-back direction, and at least two first through grooves 1411 are spaced apart along the up-down direction, and in the up-down direction, the side of the first through groove 1411 close to the adjacent first through groove 1411 is an upwardly convex arc surface 14111. It should be noted that the arc surface 14111 is parabolic or arc-shaped, and this embodiment does not impose specific restrictions on this.

[0072] It can be understood that since the side of the first through groove 1411 in each vertical side beam 141 close to the adjacent first through groove 1411 is an upwardly protruding arc surface 14111, on the one hand, it can make the maximum principal stress act along the surface of the first through groove 1411, and the minimum principal stress in the vertical direction on the first through groove 1411 is zero, thereby improving the bearing capacity of the lower box body; on the other hand, when the vehicle collides sideways, the vertical side beam 141 is first subjected to the impact force, and the arc surface 14111 is preferentially subjected to the collapse energy absorption, that is, the deformation or even fracture of the arc surface 14111 is utilized to absorb and disperse the impact force of the side collision, thereby reducing the possibility of deformation of the outer surface of the vertical side beam 141, and reducing the possibility of the battery cells 201 on the far right and far left being squeezed due to the side collision, so that the vehicle meets the side column collision standard without increasing the cost and weight.

[0073] In this embodiment, Figure 4 and Figure 5As shown, each vertical side beam 141 is provided with three first through slots 1411 to increase the vertical bending rigidity and thus avoid excessive bending of the vertical side beam 141 during a collision. That is, each first through slot 1411 penetrates along the front-to-back direction, the inner bottom surface of the first through slot 1411 located at the top is an arc-shaped surface 14111 protruding upward, the inner top surface and inner bottom surface of the first through slot 1411 located in the middle are both arc-shaped surfaces 14111 protruding upward, and the inner top surface of the first through slot 1411 located at the bottom is an arc-shaped surface 14111 protruding upward. It should be noted that the number of the first through slots 1411 and the size of each first through slot 1411 can be adjusted according to actual needs, and this embodiment does not impose specific restrictions on this.

[0074] In some embodiments, Figure 1 , Figures 3 to 5 As shown, both the left side plate and the right side plate further include a transverse side beam 142, which is arranged on the outer side of the vertical side beam 141 and is used to connect the vehicle body. The connection method between the transverse side beam 142 and the vertical side beam 141 includes but is not limited to welding, and the connection method between the transverse side beam 142 and the vehicle body includes but is not limited to bolt connection, rivet connection, welding or snap connection, etc.

[0075] In this embodiment, Figure 3 As shown, the horizontal side beam 142 is located in the middle of the side of the vertical side beam 141 away from the battery cell 201, and is used to further improve the force uniformity of the left plate and the right plate and enhance the overall stability.

[0076] In some embodiments, the transverse side beam 142 is provided with at least two second through slots 1421 spaced apart in the left-right direction along the front-to-back direction, so as to increase the lateral bending rigidity and avoid excessive bending of the transverse side beam 142 during a collision, thereby reducing weight and absorbing energy, and further improving the safety performance of battery use. It should be noted that the number, size and shape of the second through slots 1421 can be designed according to actual needs, and this embodiment does not impose specific restrictions on this. In this embodiment, each transverse side beam 142 is provided with three rectangular second through slots 1421.

[0077] In some embodiments, Figure 4 As shown, the second through slot 1421 is provided with rounded corners around it, which is used to increase the distance between the horizontal side beam 142 and the vehicle body and the distance between the horizontal side beam 142 and the vertical side beam 141, so as to further reduce stress concentration and improve energy absorption effect. It should be noted that the size of the rounded corners can be designed according to actual needs, and this embodiment does not impose specific restrictions on this.

[0078] In some embodiments, Figure 4 As shown, in the up-down direction, the distance between two adjacent arc-shaped surfaces 14111 gradually decreases from the two ends to the middle in the left-right direction.

[0079] It can be understood that the height difference between the inner bottom surface of the first through groove 1411 located at the top and the inner top surface of the first through groove 1411 located in the middle, as well as the height difference between the inner bottom surface of the first through groove 1411 located in the middle and the inner top surface of the first through groove 1411 located at the bottom, gradually decreases from the two ends to the middle in the left-right direction, thereby increasing the contact area between each first through groove 1411 and the left and right sides of the vertical side beam 141, so that when the horizontal side beam 142 is hit by external force, the impact force is further dispersed, thereby improving the energy absorption and buffering strength.

[0080] In some embodiments, Figure 4 As shown, in the left-right direction, the thickness of the vertical side beam 141 close to the battery cell 201 is L, and meets the following condition: 3mm<L≤5mm.

[0081] It is understandable that, compared with the value of L in the related art, which is often 3 mm, by increasing the value of L, the effective thickness of the vertical side beam 141 is strengthened, so that when the curved surface 14111 is impacted and broken, the possibility of the vertical side beam 141 being pierced by deformation and impact force at the broken part and touching the surface of the battery cell 201 is reduced, so as to improve the safety of battery use without changing the spacing between the battery cell 201 and the vertical side beam 141 as much as possible. In this embodiment, L = 5 mm.

[0082] In some embodiments, Figure 4 As shown, the first through slot 1411 is provided with rounded corners around it to increase the spacing between the vertical side beam 141 and the battery module and the spacing between the horizontal side beam 142 and the vertical side beam 141, so as to further reduce stress concentration and improve energy absorption effect. It should be noted that the size of the rounded corners can be designed according to actual needs, and this embodiment does not impose specific restrictions on this.

[0083] In some embodiments, Figure 5 As shown, the two end surfaces of the vertical side beam 141 set along the front-to-back direction are first inclined surfaces 1412, and the two end surfaces of the front plate 120 and the rear plate 130 set along the left-to-right direction are second inclined surfaces, and the first inclined surface 1412 and the second inclined surface match each other.

[0084] It is understandable that, by cooperating with the first inclined surface 1412 and the second inclined surface, even if the front end and the rear end of the vertical side beam 141 are respectively welded with the front plate 120 and the rear plate 130 using an inclined surface welding process, the structural strength and aesthetics of the entire lower box can be enhanced. It should be noted that the specific inclination direction and angle of the first inclined surface 1412 and the corresponding second inclined surface can be designed according to actual needs, and this embodiment does not impose specific restrictions on this.

[0085] In this embodiment, Figure 5As shown, the inclination directions of the two first inclined surfaces 1412 of the same vertical side beam 141 are arranged opposite to each other, and the welding strength is further improved by staggering the stress concentration direction.

[0086] In some embodiments, Figure 6 and Figure 7 As shown, the side of the energy absorption structure 300 close to the vertical side beam 141 includes a third section 301 and a fourth section 302 arranged at the lower end of the third section 301, and the fourth section 302 is arranged at an angle; the side of the vertical side beam 141 close to the battery module includes a first section 1413 and a second section 1414 arranged at the lower part of the first section 1413, the first section 1413 and the third section 301 are in contact, and the second section 1414 is arranged at an angle and in contact with the fourth section 302. It should be noted that the inclination angle and direction of the second section 1414 and the fourth section 302 can be designed according to actual needs, and this embodiment does not impose specific restrictions on this.

[0087] It can be understood that the first section 1413, the second section 1414 and the battery module are connected in sequence to form a accommodating space with an opening at the upper end. On the one hand, compared with the energy absorbing structure 300 being glued to at least one of the vertical side beams 141 and the battery module, the energy absorbing structure 300 can be fixed by directly placing it in the accommodating space. On the other hand, since the second section 1414 and the fourth section 302 are both inclined and abutted against each other, when the vertical side beams 141141 are subjected to impact force, the corner area formed between the second section 1414 and the first section 1413 can be used for collapse and energy absorption. By playing a certain guiding role, the deformation or even fracture of the connection between the first section 1413 and the second section 1414 can be used to absorb and disperse the impact force of the side collision, thereby reducing the possibility of the battery cell 201 being squeezed due to the side collision.

[0088] In this embodiment, Figure 6 and Figure 7 As shown, from top to bottom, the distance between the second section 1414 and the battery module gradually decreases, and the distance between the fourth section 302 and the battery module gradually decreases.

[0089] The embodiment of the present application also provides a vehicle. The vehicle includes a vehicle body and the above-mentioned battery, and the battery is installed on the vehicle body. The material of the vehicle body includes but is not limited to stainless steel, aluminum alloy or titanium alloy.

[0090] According to the vehicle provided in the embodiment of the present application, an energy absorbing structure 300 is arranged between the battery module and the box structure in the battery, and the projection of each outermost battery cell 201 along the left and right direction at least partially overlaps with the projection of the energy absorbing structure 300 along the left and right direction, so that the energy absorbing structure 300 can absorb and disperse the impact force, reduce the possibility of deformation of the outer surface of the box structure along the left and right direction, and hinder the deformation and fracture part of the box structure along the left and right direction to reduce the risk of puncturing the battery cell 201, so as to maximize the safety performance of the vehicle.

[0091] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0092] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0093] In the description of this application, "first feature" or "second feature" may include one or more of the features.

[0094] In the description of the present application, “plurality” means two or more.

[0095] In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0096] In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0097] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0098] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery, characterized in that: include: A box structure, wherein the box structure defines a receiving cavity; A battery module is installed in the accommodating cavity, and the battery module includes a plurality of battery cells distributed in an array; An energy absorbing structure is installed in at least one of the accommodating cavity and the battery cells and is located between the battery module and the box structure, and the projection of the outermost battery cells along the left-right direction at least partially overlaps with the projection of the energy absorbing structure along the left-right direction.

2. The battery according to claim 1, characterized in that The energy absorbing structure comprises: The main body is a rectangular structure with a hollow interior.

3. The battery according to claim 2, characterized in that The main body is provided with a mounting slot along the front-to-back direction, and the energy absorbing structure further comprises: A buffer portion is installed in the installation slot, and the material of the buffer portion is different from that of the main body.

4. The battery according to claim 3, characterized in that The buffer portion comprises: A plurality of buffer sections are sequentially distributed along the up-down direction, and the inclined directions of two adjacent buffer sections are opposite.

5. The battery according to claim 4, characterized in that The energy absorbing structure further comprises: The heat preservation part is arranged on a side of the main body close to the battery module.

6. The battery according to any one of claims 1 to 5, characterized in that: The energy absorbing structure and the battery cell are connected by gluing.

7. The battery according to any one of claims 1 to 5, characterized in that: The box structure includes a bottom plate and a front plate, a left plate, a rear plate and a right plate respectively fixedly connected to the bottom plate and extending upward, and used to surround and form the accommodating cavity, wherein: The left side plate and the right side plate both include vertical side beams, the front and rear ends of the vertical side beams are respectively connected to the front plate and the rear plate, the vertical side beams are provided with at least two first through grooves along the front-to-back direction, at least two of the first through grooves are spaced apart along the up-down direction, and in the up-down direction, a side of the first through groove close to the adjacent first through groove is an upwardly protruding arc surface.

8. The battery according to claim 7, characterized in that The distance between two adjacent arc-shaped surfaces gradually decreases from the two ends to the middle in the left-right direction.

9. A vehicle, characterized in that: include: Car body; as well as The battery according to any one of claims 1 to 8, wherein the battery is mounted on the vehicle body.

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