Battery device and vehicle

Abstract

The utility model provides a battery device and a vehicle, and belongs to the technical field of batteries. The battery device comprises a battery monomer, a box body and a bottom protection plate. The box body is used for accommodating the battery monomers; the bottom protection plate is located on the side, away from the battery single bodies, of the bottom of the box body and comprises a fixing part and a protection part, the fixing part and the protection part are of an integrated structure, the fixing part is connected with the box body through a fastener, and at least part of the protection part is located on the side, away from the geometric center of the fixing part, of the fastener in the horizontal direction. The first end of the protection part is connected with the fixing part, and the second end of the protection part extends along the side away from the box body. In the vertical direction, the second end of the protection part is lower than the end, protruding out of the fixing part, of the fastener. And the bottom protection plate realizes shielding protection on the fastener, and meanwhile, the dismounting and mounting efficiency of the bottom protection plate is also improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery device and a vehicle. BACKGROUND

[0002] Energy saving and emission reduction is the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their energy saving and environmental protection advantages. For electric vehicles, battery technology is an important factor for their development.

[0003] Electric vehicles are arranged with batteries at the bottom, and the ground clearance is often small, so that scraping or bumping accidents are prone to occur during driving. The bottom guard plate can be added to protect the battery, and the bottom guard plate also has the function of sealing.

[0004] However, when scraping or bumping occurs at the bottom, the fastener locking the bottom guard plate is easily impacted, resulting in a decrease in the pressing force of the fastener, thereby causing the sealing of the bottom of the battery to fail, and even a local structure rupture problem caused by the pulling of the fastener. UTILITY MODEL CONTENT

[0005] The present application aims to at least solve one of the technical problems in the background art. To this end, one object of the present application is to provide a battery device and a vehicle to improve the reliability of the fastener locking the bottom guard plate.

[0006] The embodiment of the first aspect of the present application provides a battery device, which comprises a battery monomer, a box body and a bottom guard plate. The box body is used to accommodate the battery monomer. The bottom guard plate is located on the side of the bottom of the box body away from the battery monomer. The bottom guard plate comprises a fixed part and a protection part, and the fixed part and the protection part are an integral structure. The fixed part is connected with the box body through a fastener. The protection part is at least partially located on the side of the fastener away from the geometric center of the fixed part in the horizontal direction. The first end of the protection part is connected with the fixed part, and the second end of the protection part is extended and arranged on the side away from the box body. In the vertical direction, the second end of the protection part is lower than the end of the fastener protruding from the fixed part.

[0007] In the technical solution of the embodiment of the present application, the bottom guard plate with the protection part and the fixed part is integrally formed at the bottom of the box body. The protection part can shield the part of the fastener locking the fixed part protruding from the fixed part, so as to replace the fastener to bear the impact, reduce the impact on the fastener, and achieve the purpose of protecting the fastener and reducing local stress concentration. The reliability of the fastener and the overall structure is improved, thereby improving the reliability of the sealing of the bottom of the battery device. At the same time, the protection part is located on one side of the fastener, which reduces the shielding problem of the protection part to the assembly or disassembly of the fastener, and further improves the efficiency of disassembling and assembling the bottom guard plate.

[0008] In some embodiments, the protection part comprises a first protection body, a second protection body, and a weak structure between the first protection body and the second protection body. The first protection body is connected with the fixing part, and the second protection body is used to bend around the weak structure towards the fastener under the action of an external force. Thus, the effective coverage area of the protection part on the fastener can be further increased.

[0009] In some embodiments, the height dimension of the weak structure relative to the fixing part is greater than or equal to the height dimension of the fastener protruding from the fixing part. Thus, the probability of the second protection body contacting the fastener when bending is reduced, and the impact on the fastener is further reduced.

[0010] In some embodiments, in the case where the second protection body bends towards the fastener, the end of the second protection body and the end of the fastener protruding from the fixing part at least partially overlap in the orthogonal projection on the plane where the fixing part is located. The effective coverage area of the second protection body on the fastener is increased, so that the fastener can be further effectively covered.

[0011] In some embodiments, the distance between the end of the second protection body away from the weak structure and the weak structure is a first dimension, and the distance between the fastener and the weak structure in the horizontal direction is a second dimension, and the first dimension is greater than the second dimension. So that the second protection body after bending can effectively cover the fastener.

[0012] In some embodiments, the protection part further comprises a protruding part protruding from the side of the second protection body facing the fastener, and the protruding part is used to contact and connect with the surface of the fixing part in the case where the second protection body bends towards the fastener. Thus, the problem of damage to the fastener caused by excessive extrusion of the second protection body on the fastener is reduced.

[0013] In some embodiments, the dimension of the protruding part protruding from the surface of the side of the second protection body facing the fastener is greater than the height dimension of the fastener protruding from the fixing part. Thus, the problem of damage to the fastener caused by the contact between the second protection body and the fastener is further reduced.

[0014] In some embodiments, the protruding part and the fastener are staggered along the extension direction of the weak structure. Thus, the interference between the protruding part and the fastener when the second protection body bends towards the fastener is reduced.

[0015] In some embodiments, the second protection body and the protruding part are an integral structure. Thus, the overall structure is simplified and the overall weight is reduced.

[0016] In some embodiments, the number of protruding parts is multiple, and the multiple protruding parts are arranged at intervals along the extension direction of the weak structure. Thus, multi-point support for the second protection body is achieved, and the stability of the second protection body is improved.

[0017] In some embodiments, the fixing part comprises a first fixing body and a second fixing body recessed relative to the first fixing body towards the box body, the second fixing body is located at the edge of the first fixing body, and the second fixing body is in an integral structure with the first fixing body. The second fixing body is connected with the box body through a fastener, and the height dimension of the fastener protruding from the surface of the second fixing body is smaller than the depth dimension of the second fixing body recessed relative to the first fixing body. The first fixing body can shield the fastener to a certain extent.

[0018] In some embodiments, in the vertical direction, the second end of the protection part is lower than the first fixing body. The protection part can shield the first fixing body to a certain extent while shielding the fastener, thereby protecting the first fixing body.

[0019] In some embodiments, the battery device further comprises a cushion block arranged between the first fixing body and the box body. The arrangement requirement of the stepped fixing part is met.

[0020] In some embodiments, the protection part is configured as a flange structure at the edge of the bottom guard plate. The process is simplified, and the production cost of the bottom guard plate is reduced.

[0021] Embodiments of the second aspect of the application provide a vehicle comprising the battery device in the above embodiments.

[0022] The above description is only a summary of the technical solutions of the application. In order to enable the technical means of the application to be more clearly understood, and to be implemented according to the content of the description, and in order to enable the above and other purposes, characteristics and advantages of the application to be more apparent and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0023] In the drawings, identical reference numerals designate identical or similar parts throughout the several views. The drawings are not necessarily to scale. It should be understood that the drawings only depict some embodiments in accordance with the present disclosure and should not be considered as limiting the scope of the present disclosure.

[0024] Figure 1 Structure schematic diagram of a vehicle of some embodiments of the application;

[0025] Figure 2 Exploded structure schematic diagram of a battery device of some embodiments of the application;

[0026] Figure 3 Structure schematic diagram of a battery device of some embodiments of the application;

[0027] Figure 4 Partial structure schematic diagram of a battery device of some embodiments of the application;

[0028] Figure 5 Partial structural schematic view of a battery device according to some embodiments of the present application;

[0029] Figure 6 Partial structural schematic view of a bottom guard according to some embodiments of the present application;

[0030] Figure 7 Partial structural schematic view of a bottom guard according to some embodiments of the present application; Figure 3 Enlarged structural schematic view at A;

[0031] Figure 8 Partial structural schematic view of a bottom guard according to some embodiments of the present application;

[0032] Figure 9 Partial structural schematic view of a battery device according to some embodiments of the present application;

[0033] Figure 10 Partial structural schematic view of a bottom guard according to some embodiments of the present application;

[0034] Figure 11 Partial structural schematic view of a battery device according to some embodiments of the present application;

[0035] BRIEF DESCRIPTION OF DRAWINGS

[0036] 1000, vehicle;

[0037] 100, battery device; 200, controller; 300, motor;

[0038] 10, box; 11, first portion; 12, second portion;

[0039] 20, battery cell;

[0040] 30, bottom guard;

[0041] 31, fixing portion; 311, first fixing body; 312, second fixing body;

[0042] 32, protection portion; 321, first protection body; 322, second protection body; 323, weak structure; 324, protruding portion;

[0043] 40, fastener;

[0044] 50, spacer;

[0045] F1, horizontal direction; F2, vertical direction. DETAILED DESCRIPTION

[0046] The embodiments of the present application will be described in detail below with reference to the drawings. The following examples are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot be used to limit the protection scope of the present application.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the terms "comprising," "comprises" and "including" as used herein are synonymous with and meant to have the same meaning as the term "including"; the term "coupled" as used herein means the joining of two members together with one or more intervening members.

[0048] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0049] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. The skilled person explicitly and implicitly understands that the embodiments described herein can be combined with other embodiments.

[0050] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0051] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0052] In the description of the embodiments of the present application, the orientations or positional relationships indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0053] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0054] At present, from the development of market situation, the application of battery is more and more extensive. The battery is not only applied to the energy storage power supply system of hydropower, thermal power, wind power and solar power station, but also widely applied to electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, and aerospace and other fields. With the continuous expansion of the application field of battery, the demand of its market is also increasing.

[0055] The electric vehicle is arranged with a battery at the bottom, and the ground clearance is often small, so that the bottom scraping or knocking accidents are easy to occur during driving. In some cases, the bottom guard plate can be added to protect the battery, and the bottom guard plate also has the function of sealing.

[0056] However, when the bottom scraping or knocking occurs at the bottom, the fastener locking the bottom guard plate is easy to be impacted, and the fastener may be deformed or inclined under the impact, resulting in a decrease in the pressing force of the fastener, thereby causing the sealing failure of the bottom of the battery, and even the problem of local structure rupture caused by the pulling of the fastener.

[0057] Based on the above considerations, the application provides a battery device and a vehicle. The battery device comprises a battery monomer, a box body, and a bottom guard plate. The box body is used to accommodate the battery monomer. The bottom guard plate is located at the bottom of the box body away from the side of the battery monomer. The bottom guard plate comprises a fixed part and a protection part, which are an integral structure. The fixed part is connected with the box body through a fastener. The protection part is at least partially located on the side of the fastener away from the geometric center of the fixed part in the horizontal direction. The first end of the protection part is connected with the fixed part, and the second end of the protection part is arranged to extend away from the side of the box body. In the vertical direction, the second end of the protection part is lower than the end of the fastener protruding from the fixed part.

[0058] By arranging the bottom guard plate with the protection part and the fixed part at the bottom of the box body, the protection part can shield the part where the fastener of the fixed part protrudes, so as to bear the impact instead of the fastener, reduce the impact on the fastener, and thus achieve the purposes of protecting the fastener and reducing local stress concentration, thereby improving the reliability of the fastener and the overall structure, and improving the reliability of the bottom seal of the battery device. At the same time, the protection part is located on the side of the fastener, which reduces the shielding problem of the protection part to the assembly or disassembly of the fastener, and further improves the efficiency of disassembling the bottom guard plate.

[0059] The battery device disclosed in the embodiments of the application can be used in an electric device such as a vehicle. In this way, the reliability of the fastener attached to the bottom guard plate can be improved.

[0060] The following embodiments are described for convenience with a vehicle 1000 as an example of an electric device in an embodiment of the application.

[0061] Please refer to Figure 1 , Figure 1 The vehicle provided in some embodiments of the application is shown in the structural diagram. The vehicle 1000 can be a fuel car, a gas car, or a new energy car. The new energy car can be a pure electric car, a hybrid car, or an extended range car. The vehicle 1000 is internally provided with a battery device 100, which can be arranged at the bottom, the head, or the tail of the vehicle 1000. The battery device 100 can be used for power supply of the vehicle 1000, for example, the battery device 100 can be used as the operating power supply of the vehicle 1000. The vehicle 1000 can further comprise a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power demand of the vehicle 1000 during starting, navigation, and driving.

[0062] In some embodiments of the application, the battery device 100 can not only be used as the operating power supply of the vehicle 1000, but also be used as the driving power supply of the vehicle 1000, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1000.

[0063] Please refer toFigure 2 , Figure 2 The exploded structural diagram of the battery device provided by some embodiments of the present application is shown. The battery device 100 comprises a box 10 and a battery cell 20, and the battery cell 20 is accommodated in the box 10. The box 10 is used to provide an accommodation space for the battery cell 20, and the box 10 can adopt various structures. In some embodiments, the box 10 can comprise a first part 11 and a second part 12, the first part 11 and the second part 12 are mutually covered, and the first part 11 and the second part 12 jointly define an accommodation space for accommodating the battery cell 20. The second part 12 can be a hollow structure with one end open, and the first part 11 can be a plate-shaped structure, which is covered on the open side of the second part 12 to jointly define the accommodation space with the second part 12; the first part 11 and the second part 12 can also be hollow structures with one side open, and the open side of the first part 11 is covered on the open side of the second part 12. Of course, the box 10 formed by the first part 11 and the second part 12 can have various shapes, such as a cylinder, a cuboid, etc.

[0064] In the battery device 100, the battery cell 20 can be multiple, and the multiple battery cells 20 can be connected in series, in parallel or in a mixed manner. The mixed manner means that the multiple battery cells 20 are connected in series and in parallel. The multiple battery cells 20 can be directly connected in series, in parallel or in a mixed manner, and then the whole of the multiple battery cells 20 is accommodated in the box 10; of course, the multiple battery cells 20 can be first connected in series, in parallel or in a mixed manner to form a battery module, and then the multiple battery modules are connected in series, in parallel or in a mixed manner to form a whole, which is accommodated in the box 10. The battery device 100 can also comprise other structures, for example, the battery device 100 can also comprise a current collecting component for realizing the electrical connection between the multiple battery cells 20.

[0065] Each battery cell 20 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto. The battery cell 20 can be in the shape of a cylinder, a flat body, a cuboid or other shapes, etc.

[0066] In combination with the description of the battery device provided by some embodiments of the present application, the structural diagram of the battery device is shown in FIG. 1; Figures 3 to 5 In combination with the description of the battery device provided by some embodiments of the present application, the structural diagram of the battery device is shown in FIG. 1; Figure 3 In combination with the description of the battery device provided by some embodiments of the present application, the structural diagram of the battery device is shown in FIG. 1; Figure 4 In combination with the description of the battery device provided by some embodiments of the present application, the structural diagram of the battery device is shown in FIG. 1; Figure 5 In combination with the description of the battery device provided by some embodiments of the present application, the structural diagram of the battery device is shown in FIG. 1.

[0067] The embodiment of the present application provides a battery device 100, which comprises a battery cell 20, a box body 10 and a bottom guard plate 30. The box body 10 is used for containing the battery cell 20. The bottom guard plate 30 is located on a side of the bottom of the box body 10 away from the battery cell 20, and the bottom guard plate 30 comprises a fixed part 31 and a protection part 32. The fixed part 31 and the protection part 32 are in an integrated structure. The fixed part 31 is connected with the box body 10 through a fastener 40. The protection part 32 is at least partially located on a side of the fastener 40 away from the geometric center of the fixed part 31 in the horizontal direction F1. The first end of the protection part 32 is connected with the fixed part 31, and the second end of the protection part 32 is arranged in an extending manner on a side away from the box body 10. In the vertical direction F2, the second end of the protection part 32 is lower than the end of the fixed part 31 protruding from the fixed part 31.

[0068] The battery cell 20 refers to the smallest unit constituting the battery device 100. The box body 10 is used for providing a containing space for the battery cell 20. The bottom of the box body 10 extends in the horizontal direction F1 and is used for supporting the battery cell 20 in the vertical direction F2.

[0069] The bottom guard plate 30 is a component used for protecting the bottom of the box body 10. The bottom guard plate 30 is located on a side of the bottom of the box body 10 away from the battery cell 20. In some examples, for a vehicle 1000 comprising the battery device 100, the bottom guard plate 30 is located on a side of the box body 10 facing the ground.

[0070] The fixed part 31 is a part of the bottom guard plate 30 covering a side of the bottom of the box body 10 away from the battery cell 20 and connected with the box body 10 through the fastener 40. The fixed part 31 extends in the horizontal direction F1 to cover the bottom of the box body 10, so as to reduce damage to the bottom of the box body 10 caused by external impact, thereby protecting the bottom of the box body 10. In some embodiments, the fastener 40 can be a bolt. When the fixed part 31 is assembled to the box body 10, the bolt can be assembled in the vertical upward direction from a side of the fixed part 31 away from the box body 10, so as to realize the connection between the fixed part 31 and the box body 10. The head of the bolt protrudes from the surface of the fixed part 31.

[0071] The protection part 32 is a part of the bottom guard plate 30 that can shield the fastener 40 in the horizontal direction F1, thereby protecting the fastener 40. The protection part 32 is located at least partially on the side of the fastener 40 away from the geometric center of the fixing part 31 in the horizontal direction F1. It can be understood that the relative position relationship between the protection part 32 and the fastener 40 is that the protection part 32 is closer to the edge of the fixing part 31 relative to the fastener 40, that is, the protection part 32 is located on the side of the fastener 40 toward the edge of the fixing part 31. Thus, when an impact from the outside toward the geometric center of the fixing part 31 is received, the protection part 32 can shield the fastener 40 to some extent to reduce the impact received by the fastener 40. In some examples, the source of the impact can be gravel or other foreign matter kicked up during vehicle travel.

[0072] The second end of the protection part 32 extends away from the box body 10. In some examples, the extension direction of the protection part 32 can be the vertical direction F2, which is perpendicular to the extension direction of the fixing part 31. The extension direction of the protection part 32 is the same as the assembly direction of the fastener 40, and the protection part 32 is located on the side of the fastener 40, thereby reducing the shielding problem of the protection part 32 to the assembly or disassembly of the fastener 40, so as to facilitate the disassembly and replacement of the bottom guard plate 30. Meanwhile, the fixing part 31 and the protection part 32 are integrated, which further improves the efficiency of disassembling the bottom guard plate 30.

[0073] In some embodiments, the process method for forming the integrated structure of the bottom guard plate 30 can be that the edge of the bottom guard plate 30 is subjected to flanging processing, thereby forming a flange structure at the edge of the bottom guard plate 30 at a certain angle relative to the remaining part. The protection part is configured as the flange structure, and the fixing part 31 is configured as the remaining part of the bottom guard plate 30 connected to the flange structure.

[0074] In the vertical direction F2, the second end of the protection part 32 is lower than the end of the fastener 40 protruding from the fixing part 31, and the first end of the protection part 32 is connected to the fixing part 31. It can be understood that the size of the protection part 32 in the vertical direction F2 is greater than the size of the fastener 40 protruding from the fixing part 31, and the protection part 32 can completely cover the end of the fastener 40. Thus, the protection part 32 can shield the end of the fastener 40 in the horizontal direction F1. The horizontal direction F1 is perpendicular to the vertical direction F2. When the bottom of the battery device 100 is impacted toward the geometric center of the fixing part 31, the impact is borne by the protection part 32 instead of the fastener 40 under the shielding of the protection part 32, so that the impact cannot directly act on the shielded fastener 40, thereby reducing the impact received by the fastener 40 to achieve the purpose of protecting the fastener 40 and reducing local stress concentration. Thus, the reliability of the fastener 40 and the overall structure is improved, and the reliability of the bottom sealing of the battery device 100 is further improved.

[0075] By arranging the bottom guard plate 30 with the protection part 32 and the fixing part 31 integrally formed at the bottom of the box 10, the protection part 32 can shield the protruding part of the fastener 40 of the locking fixing part 31 to replace the fastener 40 to bear the impact, reduce the impact on the fastener 40, thereby achieving the purpose of protecting the fastener 40 and reducing the local stress concentration, improving the reliability of the fastener 40 and the overall structure, thereby improving the reliability of the bottom sealing of the battery device 100. At the same time, the protection part 32 is located on one side of the fastener 40, which reduces the shielding problem of the protection part 32 to the assembly or disassembly of the fastener 40, and further improves the efficiency of disassembling the bottom guard plate 30.

[0076] In combination Figures 4 to 9 as shown, Figure 5 Figure 2 is a partial structural schematic diagram of a battery device according to some embodiments of the present application; Figure 6 Figure 3 is a partial structural schematic diagram of a bottom guard plate according to some embodiments of the present application; Figure 7 Figure 4 is an enlarged structural schematic diagram of A; Figure 3 Figure 4 is an enlarged structural schematic diagram of A; Figure 8 Figure 5 is a partial structural schematic diagram of a bottom guard plate according to some embodiments of the present application; Figure 9 Figure 6 is a partial structural schematic diagram of a battery device according to some embodiments of the present application.

[0077] According to some embodiments of the present application, the protection part 32 includes a first protection body 321, a second protection body 322, and a weak structure 323 between the first protection body 321 and the second protection body 322. The first protection body 321 is connected with the fixing part 31, and the second protection body 322 is used to bend towards the fastener 40 around the weak structure 323 under the action of external force.

[0078] The first protection body 321 is the part of the protection part 32 close to the fixing part 31, the second protection body 322 is the part of the protection part 32 away from the fixing part 31, and the weak structure 323 is between the first protection body 321 and the second protection body 322. The weak structure 323 is a part of the protection part 32 with relatively weak structure strength, so that the second protection body 322 can bend relative to the first protection body 321 with the weak structure 323 as the bending center. The axis of the second protection body 322 bending is the same as the extension direction of the weak structure 323.

[0079] When the second protective body 322 is subjected to an external impact, the second protective body 322 is bent relative to the first protective body 321 around the weak structure 323 towards the side of the fastener 40, so that the plane where the first protective body 321 is located and the plane where the second protective body 322 is located form an angle, and then the first protective body 321 and the second protective body 322 can shield the fastener 40 in two different directions, and the bent second protective body 322 is closer to the fastener 40 than the second protective body 322 before being bent, which increases the effective coverage area of the second protective body 322 on the fastener 40 to some extent, that is, the bent second protective body 322 can further cover the fastener 40 in cooperation with the first protective body 321, thereby further improving the reliability of the protective part 32 in shielding the fastener 40, reducing the probability of foreign matters such as gravel bypassing the protective part 32 and impacting the fastener 40, and thereby further improving the reliability of the fastener 40.

[0080] In some embodiments, the protective part 32 is in the form of a plate as a whole, and a preset position extending in a first direction in a horizontal plane between the first end and the second end of the protective part 32 is selected, the part between the first end of the protective part 32 and the preset position is the first protective body 321, and the part between the second end of the protective part 32 and the preset position is the second protective body 322. The preset position can be provided with gap structures arranged at intervals, or the thickness of the preset position can be reduced, so that the structural strength of the preset position can be reduced, thereby forming the weak structure 323 between the first protective body 321 and the second protective body 322.

[0081] By providing the weak structure 323 on the protective part 32, the second protective body 322 can be bent towards the fastener 40 under the action of an external impact to further cover the fastener 40 in cooperation with the first protective body 321, which increases the effective coverage area of the protective part 32 on the fastener 40, thereby further improving the reliability of the protective part 32 in shielding the fastener 40, and further improving the reliability of the fastener 40.

[0082] As shown in FIG. 1, Figure 6 According to some embodiments of the present application, the height dimension h1 of the weak structure 323 relative to the fixed part 31 is greater than or equal to the height dimension H of the fastener 40 protruding from the fixed part 31.

[0083] The weak structure 323 is the center of the bending of the second protective body 322 relative to the first protective body 321, and the height dimension h1 of the weak structure 323 relative to the fixed portion 31 is greater than or equal to the height dimension H of the fastener 40 protruding from the fixed portion 31, so that the bending center of the second protective body 322 is lower than the fastener 40 or flush with the fastener 40 in the vertical direction F2, thereby increasing the angle that the second protective body 322 needs to bend to have the possibility of contacting the fastener 40, thereby increasing the difficulty of the second protective body 322 contacting the fastener 40, to a certain extent, reducing the probability of the second protective body 322 contacting the fastener 40 when bending towards the fastener 40, accordingly, reducing the impact of the second protective body 322 on the fastener 40, and further improving the reliability of the fastener 40.

[0084] By appropriately increasing the height dimension h1 of the weak structure 323 relative to the fixed portion 31, the probability of the second protective body 322 contacting the fastener 40 when bending is reduced, the impact on the fastener 40 is further reduced, and the reliability of the fastener 40 is improved.

[0085] As shown in Figure 7 According to some embodiments of the present application, in the case where the second protective body 322 bends towards the fastener 40, the end of the second protective body 322 and the fastener 40 protruding from the fixed portion 31 at least partially overlap in the orthographic projection of the plane where the fixed portion 31 is located.

[0086] The plane where the fixed portion 31 is located is a plane parallel to the extension direction of the fixed portion 31. In some embodiments, the fixed portion 31 extends along the horizontal direction F1, and the plane where the fixed portion 31 is located is a horizontal plane, and accordingly, the orthographic projection of the plane where the fixed portion 31 is located is the projection along the vertical direction F2 on the horizontal plane.

[0087] At least partial overlap means that the projection of the fastener 40 does not completely fall within the projection of the second protective body 322, but partially overlaps, that is, the second protective body 322 can partially cover the fastener 40, or the projection of the fastener 40 completely falls within the projection of the second protective body 322, that is, the second protective body 322 can completely cover the fastener 40.

[0088] By setting the projection of the fastener 40 and the bent second protective body 322 to at least partially overlap, the effective coverage area of the second protective body 322 on the fastener 40 is increased, so that the bent second protective body 322 can further effectively cover the fastener 40 in cooperation with the first protective body 321, thereby improving the reliability of the fastener 40.

[0089] As shown in Figure 8As shown, according to some embodiments of the present application, the distance between the end of the second protective body 322 away from the weak structure 323 and the weak structure 323 is a first size L1, and the distance between the fastener 40 and the weak structure 323 along the horizontal direction F1 is a second size L2, and the first size L1 is greater than the second size L2.

[0090] The first size L1 is the radius of the bending of the second protective body 322 around the weak structure 323, and the second size L2 is the minimum distance between the fastener 40 and the bending center of the second protective body 322 along the horizontal direction F1. The first size L1 is greater than the second size L2, so that along the horizontal direction F1, the end of the bent second protective body 322 away from the weak structure 323 can exceed the end of the fastener 40 close to the first protective body 321, so that the second protective body 322 can cover at least part of the fastener 40, thereby increasing the effective coverage area of the second protective body 322 to the fastener 40.

[0091] In some embodiments, the battery device 100 is arranged at the bottom of the vehicle 1000, and in addition to satisfying the condition that the first size L1 is greater than the second size L2, the first size L1 also needs to satisfy a certain ground clearance, so that the end of the second protective body 322 away from the weak structure 323 before and after bending can maintain a certain distance from the ground.

[0092] By setting the size of the second protective body 322 within a suitable range, the bent second protective body 322 can effectively cover the fastener 40, thereby improving the reliability of the fastener 40.

[0093] In combination with Figure 5 and Figure 9 As shown, according to some embodiments of the present application, the protective part 32 further comprises a protruding part 324 protruding from the side of the second protective body 322 facing the fastener 40, and the protruding part 324 is used to contact and connect with the surface of the fixed part 31 when the second protective body 322 is bent towards the fastener 40.

[0094] The protruding part 324 is a component protruding from the side of the second protective body 322 facing the fastener 40. In some embodiments, the protruding part 324 can be a protruding block connected to the side of the second protective body 322 facing the fastener 40. In other embodiments, the second protective body 322 is plate-shaped, and the side of the second protective body 322 away from the fastener 40 can be stamped to make the side of the second protective body 322 close to the fastener 40 protrude, thereby forming the protruding part 324.

[0095] When the second protective body 322 bends toward the fastener 40, the protrusion 324 can contact the fixing part 31, and the second protective body 322 cannot continue to bend, thereby providing support and limiting for the second protective body 322, and reducing the problem of damage to the fastener 40 caused by excessive compression of the fastener 40 by the second protective body 322 to a certain extent.

[0096] By providing the protrusion 324, the second protective body 322 can be supported and limited, reducing the problem of damage to the fastener 40 caused by excessive compression of the fastener 40 by the second protective body 322, thereby improving the reliability of the fastener 40.

[0097] like Figure 10 As shown, Figure 10 This is a third partial structural schematic diagram of the bottom guard plate according to some embodiments of this application. According to some embodiments of this application, the protrusion 324 protrudes from the surface of the second protective body 322 facing the fastener 40 by a dimension h2 that is greater than the height dimension H of the fastener 40 protruding from the fixing part 31.

[0098] When the second protective body 322 bends toward the fastener 40, since the protrusion size h2 of the protrusion 324 is greater than the height size H of the fastener 40 protruding from the fixing part 31, the protrusion 324 can contact the fixing part 31 first. Under the support and limiting effect of the protrusion 324, the second protective body 322 cannot contact the fastener 40. While the second protective body 322 covers the fastener 40, it further reduces the collision damage caused by the second protective body 322 to the fastener 40.

[0099] By appropriately increasing the size of the protrusion 324 protruding from the second protective body 322, the problem of damage to the fastener 40 caused by contact between the second protective body 322 and the fastener 40 is further reduced, thereby improving the reliability of the fastener 40.

[0100] Combination Figure 5 and Figure 9 As shown, according to some embodiments of this application, the protrusion 324 and the fastener 40 are staggered along the extension direction of the weak structure 323.

[0101] The extension direction of the weak structure 323 is parallel to the direction of the bending axis of the second protective body 322. The protrusion 324 is staggered with the fastener 40, so that when the second protective body 322 bends toward the fastener 40, the protrusion 324 and the fastener 40 are staggered and will not interfere with each other, thus reducing the impact damage caused by the protrusion 324 to the fastener 40.

[0102] By staggered arrangement of the protrusions 324 and the fasteners 40, interference between the protrusions 324 and the fasteners 40 when the second protective body 322 is bent towards the fasteners 40 is reduced, and accordingly, impact on the fasteners 40 is reduced, thereby improving the reliability of the fasteners 40.

[0103] As shown in Figure 5 some embodiments of the present application, the second protective body 322 and the protrusions 324 are in an integrated structure.

[0104] In some embodiments, the second protective body 322 is in a plate shape, and the protrusions 324 are formed by stamping a side of the second protective body 322 away from the fasteners 40, so that a side of the second protective body 322 close to the fasteners 40 protrudes, thereby forming the protrusions 324. That is, the protrusions 324 are formed by using a part of the structure of the second protective body 322, without the need to additionally provide protrusions on the second protective body 322, thereby simplifying the overall structure and reducing the overall weight.

[0105] By setting the second protective body 322 and the protrusions 324 in an integrated structure, the overall structure is simplified and the overall weight is reduced.

[0106] As shown in Figure 7 and Figure 9 some embodiments of the present application, the number of protrusions 324 is multiple, and the multiple protrusions 324 are arranged at intervals along the extension direction of the weak structure 323.

[0107] In some embodiments, the first protective body 321, the weak structure 323 and the second protective body 322 are arranged to extend along a first direction in a horizontal plane, thereby shielding the multiple fasteners 40 arranged at intervals along the first direction. The second protective body 322 has a certain length along the first direction, and multiple protrusions 324 are arranged at intervals along the first direction, so that the second protective body 322 can be supported at multiple points under the action of the multiple protrusions 324 when bent, thereby improving the stability of the second protective body 322 while reducing the deformation of the second protective body 322, and further reducing the impact of the second protective body 322 on the fasteners 40.

[0108] By providing multiple protrusions 324, the second protective body 322 is supported at multiple points, thereby improving the stability of the second protective body 322 and further reducing the impact of the second protective body 322 on the fasteners 40.

[0109] As shown in Figure 11 , Figure 11Figure 4 is a schematic view of a partial structure of a battery device according to some embodiments of the present application. According to some embodiments of the present application, the fixing portion 31 comprises a first fixing body 311 and a second fixing body 312 recessed relative to the first fixing body 311 towards the box body 10, the second fixing body 312 is located at the edge of the first fixing body 311, and the second fixing body 312 is in an integral structure with the first fixing body 311. The second fixing body 312 is connected with the box body 10 through the fastener 40, and the height dimension H of the fastener 40 protruding from the surface of the second fixing body 312 is less than the depth dimension h3 of the recess of the second fixing body 312 relative to the first fixing body 311.

[0110] The second fixing body 312 is recessed relative to the first fixing body 311 towards the box body 10, and the first fixing body 311 and the second fixing body 312 are in an integral structure, so that the fixing portion 31 as a whole is in a stepped shape, and the fastener 40 is located at the relatively recessed part of the fixing portion 31. Moreover, the height dimension H of the fastener 40 protruding from the surface of the second fixing body 312 is less than the depth dimension h3 of the recess of the second fixing body 312 relative to the first fixing body 311, and it can be understood that the end of the fastener 40 does not exceed the first fixing body 311 in the vertical direction F2, so that the first fixing body 311 can also shield the end of the fastener 40 to some extent in the horizontal direction F1, further improving the reliability of the fastener 40. In some embodiments, the battery device 100 is arranged at the bottom of the vehicle 1000, and the protection portion 32 shields and protects the fastener 40 during the forward travel of the vehicle 1000, and the first fixing body 311 can shield the fastener 40 to some extent during the reverse travel of the vehicle 1000, because the lower edge of the end of the fastener 40 is higher than the lower edge of the first fixing body 311.

[0111] By arranging the fastener 40 on the relatively recessed second fixing body 312 and the end of the fastener 40 not exceeding the relatively protruding first fixing body 311, the first fixing body 311 can shield the fastener 40 to some extent, further improving the reliability of the fastener 40.

[0112] In combination with the figures 1-3, Figure 4 and Figure 11 It can be seen that according to some embodiments of the present application, the second end of the protection portion 32 is lower than the first fixing body 311 in the vertical direction F2.

[0113] The second end of the protection part 32 is an end of the second protection body 322 away from the fixing part 31. Since the second end of the protection part 32 is lower than the first fixing body 311, the protection part 32 can shield the first fixing body 311 to some extent while shielding the fastener 40, thereby protecting the first fixing body 311. In some embodiments, the battery device 100 is arranged at the bottom of the vehicle 1000. During the forward travel of the vehicle 1000, the protection part 32 can shield the debris and other foreign matters kicked up during the travel of the vehicle 1000 to some extent, thereby reducing the impact damage of the debris and other foreign matters to the first fixing body 311, and prolonging the service life of the whole bottom guard plate 30.

[0114] By arranging the second end of the protection part 32 to be lower than the first fixing body 311, the protection part 32 can shield the first fixing body 311 to some extent while shielding the fastener 40, thereby protecting the first fixing body 311, and prolonging the service life of the whole bottom guard plate 30.

[0115] In combination with Figure 4 and Figure 11 As shown in FIGS. 1 and 2, according to some embodiments of the present application, the battery device 100 further comprises a cushion block 50 arranged between the first fixing body 311 and the box body 10.

[0116] The cushion block 50 is arranged between the first fixing body 311 and the box body 10, and has a certain thickness, thereby increasing the spacing between the fixing part 31 and the bottom of the box body 10, and providing a certain concave space for the second fixing body 312 to meet the arrangement requirement of the fixing part 31 in a stepped shape.

[0117] In some embodiments, the cushion block 50 can be configured as an elastic cushion block. When the fixing part 31 is impacted, the cushion block can play a buffering role to reduce the impact on the bottom of the box body 10, thereby prolonging the service life of the box body 10.

[0118] By arranging the cushion block 50 between the first fixing body 311 and the box body 10, a certain arrangement space is provided to meet the arrangement requirement of the fixing part 31 in a stepped shape.

[0119] According to some embodiments of the present application, the protection part 32 is configured as a flange structure at the edge of the bottom guard plate 30.

[0120] For the bottom protection plate 30 in an integrated structure, the edge of the bottom protection plate 30 is subjected to a flanging treatment, so that a flange structure at an angle with the rest of the bottom protection plate 30 is formed at the edge of the bottom protection plate 30, the protection part 32 is configured as the flange structure, and the fixing part 31 is configured as the rest of the bottom protection plate 30 connected with the flange structure. In some embodiments, the fixing part 31 extends along the horizontal direction F1, and the flange structure extends along the vertical direction F2.

[0121] The protection part 32 can be obtained by subjecting the edge of the bottom protection plate 30 to a flanging treatment, which is a relatively simple process and reduces the production cost of the bottom protection plate 30.

[0122] The embodiments of the second aspect of the application provide a vehicle 1000 comprising the battery device 100 according to any one of the above embodiments.

[0123] During driving of the vehicle 1000, the fastener 40 is shielded and protected by the protection part 32 of the bottom protection plate 30 on the battery device 100, so as to reduce the impact of foreign matters such as gravel kicked up during driving of the vehicle 1000 on the fastener 40, thereby improving the reliability of the fastener 40 and further improving the reliability of the bottom sealing of the battery device 100.

[0124] The vehicle 1000 comprises a vehicle body and a chassis. In some embodiments, the battery device 100 is a separate component and is installed below the chassis. In other embodiments, the box body 10 of the battery device 100 is a part of the vehicle body or the chassis, i.e., the box body 10 is in an integrated structure with the vehicle body or the chassis.

[0125] The vehicle in the embodiments can have all the beneficial effects of the battery device 100 described above, which will not be described again here.

[0126] The embodiments of the application will be described in detail below. Figures 1 to 11 The embodiments of the application will be described in detail below.

[0127] The battery device comprises a battery monomer 20, a box body 10, a bottom protection plate 30, a bolt, and a pad 50.

[0128] The box body 10 is used to accommodate the battery monomer 20.

[0129] The bottom protection plate 30 is located at the bottom of the box body 10 away from the side of the battery monomer 20, and the bottom protection plate 30 comprises a fixing part 31 and a protection part 32, which are in an integrated structure.

[0130] The fixing part comprises a first fixing body 311 and a second fixing body 312 recessed towards the box body 10 relative to the first fixing body 311, and the second fixing body 312 is located at the edge of the first fixing body 311, and the second fixing body 312 is in an integrated structure with the first fixing body 311. The second fixing body 312 is connected with the box body 10 by a bolt.

[0131] The protection portion 32 is located at least partially on the side of the bolt away from the geometric center of the fixing portion 31 in the horizontal direction F1. The first end of the protection portion 32 is connected with the second fixing body, and the second end of the protection portion 32 extends on the side away from the cabinet 10. In the vertical direction F2, the second end of the protection portion 32 is lower than the end of the bolt protruding from the fixing portion 31. The second end of the protection portion is also lower than the first fixing body, so as to not only protect the bolt, but also protect the first fixing body to a certain extent.

[0132] The protection portion 32 includes a first protection body 321, a second protection body 322, and a weak structure 323 between the first protection body 321 and the second protection body 322. The first protection body 321 is connected with the second fixing body, and the second protection body 322 is used to be bent towards the bolt around the weak structure 323 under the action of an external force.

[0133] The cushion block 50 is arranged between the first fixing body 311 and the cabinet 10, and is used to provide a certain arrangement space for the arrangement of the stepped fixing portion 31.

[0134] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device (100), characterized by The battery cell (20) comprises: a box body (10) for accommodating the battery cell (20); and a bottom guard plate (30) located at the bottom of the box body (10) away from the battery cell (20); the bottom guard plate (30) comprises a fixed part (31) and a protection part (32), and the fixed part (31) and the protection part (32) are in an integrated structure; the fixed part (31) is connected with the box body (10) through a fastener (40), and the protection part (32) is at least partially located on the side of the fastener (40) away from the geometric center of the fixed part (31) in the horizontal direction (F1); the first end of the protection part (32) is connected with the fixed part (31), and the second end of the protection part (32) is arranged to extend away from the side of the box body (10); in the vertical direction (F2), the second end of the protection part (32) is lower than the end of the fastener (40) protruding from the fixed part (31). The protection part (32) comprises a first protection body (321), a second protection body (322), and a weak structure (323) between the first protection body (321) and the second protection body (322); The first protection body (321) is connected with the fixed part (31), and the second protection body (322) is arranged to be bent around the weak structure (323) towards the fastener (40) under the action of an external force.

2. The battery device (100) according to claim 1, characterized in that The height dimension (h1) of the weak structure (323) relative to the fixed part (31) is greater than or equal to the height dimension (H) of the fastener (40) protruding from the fixed part (31). In the case where the second protection body (322) is bent towards the fastener (40), the second protection body (322) and the end of the fastener (40) protruding from the fixed part (31) at least partially overlap in the orthographic projection on the plane where the fixed part (31) is located.

3. The battery device (100) according to claim 2, characterized in that The distance between the end of the second protection body (322) away from the weak structure (323) and the weak structure (323) is a first dimension (L1), and the distance between the fastener (40) and the weak structure (323) in the horizontal direction (F1) is a second dimension (L2); the first dimension (L1) is greater than the second dimension (L2).

4. The battery device (100) according to claim 2, characterized in that The protection part (32) further comprises a protruding part (324) protruding from the side of the second protection body (322) facing the fastener (40); the protruding part (324) is arranged to be in contact with the surface of the fixed part (31) in the case where the second protection body (322) is bent towards the fastener (40).

5. The battery device (100) according to claim 2, characterized in that The dimension (h2) of the surface of the protruding part (324) protruding from the side of the second protection body (322) facing the fastener (40) is greater than the height dimension (H) of the fastener (40) protruding from the fixed part (31).

6. The battery device (100) according to claim 2, characterized in that In the extension direction of the weak structure (323), the protruding part (324) and the fastener (40) are arranged in a staggered manner.

7. The battery device (100) according to claim 6, characterized in that ​ 8. The battery device (100) according to claim 6, characterized in that ​ 9. The battery device (100) according to claim 6, characterized in that The second protection body (322) is in one-piece structure with the protrusion (324).

10. The battery device (100) according to claim 6, characterized in that The number of the protrusions (324) is multiple, and the multiple protrusions (324) are arranged at intervals along the extension direction of the weak structure (323).

11. The battery device (100) according to claim 1, characterized in that The fixing part (31) comprises a first fixing body (311) and a second fixing body (312) recessed towards the box body (10) relative to the first fixing body (311), the second fixing body (312) is located at the edge of the first fixing body (311), and the second fixing body (312) is in one-piece structure with the first fixing body (311). The second fixing body (312) is connected with the box body (10) through the fastener (40), and the height dimension (H) of the fastener (40) protruding from the surface of the second fixing body (312) is less than or equal to the depth dimension (h3) of the second fixing body (312) recessed relative to the first fixing body (311).

12. The battery device (100) according to claim 11, characterized in that Along the vertical direction (F2), the second end of the protection part (32) is lower than the first fixing body (311).

13. The battery device (100) according to claim 11, characterized in that The battery device (100) further comprises a cushion block (50) arranged between the first fixing body (311) and the box body (10).

14. The battery device (100) according to any one of claims 1-13, characterized by The protection part (32) is configured as a flanging structure at the edge of the bottom guard plate (30).

15. A vehicle characterized by comprising: The battery device (100) comprises any one of claims 1-14. The battery device (100) comprises any one of claims 1-14.

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